title: Harley-Davidson

text: In 1960, Harley-Davidson consolidated the Model 165 and Hummer lines into the Super-10, introduced the Topper scooter, and bought fifty percent of Aermacchi's motorcycle division. Importation of Aermacchi's 250 cc horizontal single began the following year. The bike bore Harley-Davidson badges and was marketed as the Harley-Davidson Sprint. The engine of the Sprint was increased to 350 cc in 1969 and would remain that size until 1974, when the four-stroke Sprint was discontinued.


title: Harley-Davidson

text: After the Pacer and Scat models were discontinued at the end of 1965, the Bobcat became the last of Harley-Davidson's American-made two-stroke motorcycles. The Bobcat was manufactured only in the 1966 model year.


title: Harley-Davidson

text: Harley-Davidson replaced their American-made lightweight two-stroke motorcycles with the Italian Aermacchi-built two-stroke powered M-65, M-65S, and Rapido. The M-65 had a semi-step-through frame and tank. The M-65S was a M-65 with a larger tank that eliminated the step-through feature. The Rapido was a larger bike with a 125 cc engine. The Aermacchi-built Harley-Davidsons became entirely two-stroke powered when the 250 cc two-stroke SS-250 replaced the four-stroke 350 cc Sprint in 1974.


title: Harley-Davidson

text: Harley-Davidson purchased full control of Aermacchi's motorcycle production in 1974 and continued making two-stroke motorcycles there until 1978, when they sold the facility to Cagiva, owned by the Castiglioni family.


title: Harley-Davidson

text: In 1952, following their application to the U.S. Tariff Commission for a 40 percent tax on imported motorcycles, Harley-Davidson was charged with restrictive practices.


title: Harley-Davidson

text: In 1969, American Machine and Foundry (AMF) bought the company, streamlined production, and slashed the workforce. This tactic resulted in a labor strike and cost-cutting produced lower-quality bikes. Simultaneously, the Japanese "big four" manufacturers (Honda, Kawasaki, Suzuki, and Yamaha) revolutionized the North American market by introducing what the motoring press would call the Universal Japanese Motorcycle. In comparison, Harley-Davidson's bikes were expensive and inferior in performance, handling, and quality. Sales and quality declined, and the company almost went bankrupt. The "Harley-Davidson" name was mocked as "Hardly Ableson", "Hardly Driveable", and "Hogly Ferguson",


title: Harley-Davidson

text: In 1977, following the successful manufacture of the Liberty Edition to commemorate America's bicentennial in 1976, Harley-Davidson produced what has become one of its most controversial models, the Harley-Davidson Confederate Edition. The bike was essentially a stock Harley-Davidson with Confederate-specific paint and details.


title: Harley-Davidson

text: In 1981, AMF sold the company to a group of 13 investors led by Vaughn Beals and Willie G. Davidson for $80 million. The new management team improved product quality, introduced new technologies, and adopted just-in-time inventory management. These operational and product improvements were matched with a strategy of seeking tariff protection for large-displacement motorcycles in the face of intense competition with Japanese manufacturers. These protections were granted by the Reagan administration in 1983, giving Harley-Davidson time to implement their new strategies.<ref name="7/83 US Imposes 45% Tariff on Imported Motorcycles"></ref>


title: Harley-Davidson

text: Revising stagnated product designs was a crucial centerpiece of Harley-Davidson's turnaround strategy. Rather than trying to mimic popular Japanese designs, the new management deliberately exploited the "retro" appeal of Harley motorcycles, building machines that deliberately adopted the look and feel of their earlier bikes and the subsequent customizations of owners of that era. Many components such as brakes, forks, shocks, carburetors, electrics and wheels were outsourced from foreign manufacturers and quality increased, technical improvements were made, and buyers slowly returned.


title: Harley-Davidson

text: Harley-Davidson bought the "Sub Shock" cantilever-swingarm rear suspension design from Missouri engineer Bill Davis and developed it into its Softail series of motorcycles, introduced in 1984 with the FXST Softail.


title: Harley-Davidson

text: In response to possible motorcycle market loss due to the aging of baby-boomers, Harley-Davidson bought luxury motorhome manufacturer Holiday Rambler in 1986. In 1996, the company sold Holiday Rambler to the Monaco Coach Corporation.


title: Harley-Davidson

text: The "Sturgis" model, boasting a dual belt-drive, was introduced initially in 1980 and was made for three years. This bike was then brought back as a commemorative model in 1991.


title: Harley-Davidson

text: By 1990, with the introduction of the "Fat Boy", Harley-Davidson once again became the sales leader in the heavyweight (over 750 cc) market. At the time of the Fat Boy model introduction, a false etymology spread that "Fat Boy" was a combination of the names of the atomic bombs Fat Man and Little Boy. This has been debunked, as the name "Fat Boy" actually comes from the observation that the motorcycle is somewhat wider than other bikes when viewed head-on.


title: Harley-Davidson

text: 1993 and 1994 saw the replacement of FXR models with the Dyna (FXD), which became the sole rubber mount FX Big Twin frame in 1994. The FXR was revived briefly from 1999 to 2000 for special limited editions (FXR, FXR & FXR).


title: Harley-Davidson

text: Harley-Davidson celebrated their 100th anniversary on September 1, 2003 with a large event and concert featuring performances from Elton John, The Doobie Brothers, Kid Rock, and Tim McGraw.


title: Harley-Davidson

text: Construction started on the $75 million, 130,000 square-foot (12,000 m) Harley-Davidson Museum in the Menomonee Valley of Milwaukee, Wisconsin on June 1, 2006. It opened in 2008 and houses the company's vast collection of historic motorcycles and corporate archives, along with a restaurant, café and meeting space.


title: Harley-Davidson

text: Established in 1918, the oldest continuously operating Harley-Davidson dealership outside of the United States is in Australia. Sales in Japan started in 1912 then in 1929, Harley-Davidsons were produced in Japan under license to the company Rikuo (Rikuo Internal Combustion Company) under the name of Harley-Davidson and using the company's tooling, and later under the name Rikuo. Production continued until 1958.


title: Harley-Davidson

text: In 1998, the first Harley-Davidson factory outside the US opened in Manaus, Brazil, taking advantage of the free economic zone there. The location was positioned to sell motorcycles in the southern hemisphere market.


title: Harley-Davidson

text: In August 2009, Harley-Davidson launched Harley-Davidson India and started selling motorcycles there in 2010. The company established the subsidiary in Gurgaon, near Delhi, in 2011 and created an Indian dealer network. On September 24, 2020, Harley Davidson announced that it would discontinue its sales and manufacturing operations in India due to weak demand and sales. The move involves $75 million in restructuring costs, 70 layoffs and the closure of its Bawal plant in northern India.


title: Harley-Davidson

text: Harley-Davidson's association with sportbike manufacturer Buell Motorcycle Company began in 1987 when they supplied Buell with fifty surplus XR1000 engines. Buell continued to buy engines from Harley-Davidson until 1993, when Harley-Davidson bought 49 percent of the Buell Motorcycle Company. Harley-Davidson increased its share in Buell to ninety-eight percent in 1998, and to complete ownership in 2003.


title: Harley-Davidson

text: In an attempt to attract newcomers to motorcycling in general and to Harley-Davidson in particular, Buell developed a low-cost, low-maintenance motorcycle. The resulting single-cylinder Buell Blast was introduced in 2000, and was made through 2009, which, according to Buell, was to be the final year of production. The Buell Blast was the training vehicle for the Harley-Davidson Rider's Edge New Rider Course from 2000 until May 2014, when the company re-branded the training academy and started using the Harley-Davidson Street 500 motorcycles. In those 14 years, more than 350,000 participants in the course learned to ride on the Buell Blast.


title: Harley-Davidson

text: On October 15, 2009, Harley-Davidson Inc. issued an official statement that it would be discontinuing the Buell line and ceasing production immediately. The stated reason was to focus on the Harley-Davidson brand. The company refused to consider selling Buell. Founder Erik Buell subsequently established Erik Buell Racing and continued to manufacture and develop the company's 1125RR racing motorcycle.


title: Harley-Davidson

text: During its period of peak demand, during the late 1990s and early first decade of the 21st century, Harley-Davidson embarked on a program of expanding the number of dealerships throughout the country. At the same time, its current dealers typically had waiting lists that extended up to a year for some of the most popular models. Harley-Davidson, like the auto manufacturers, records a sale not when a consumer buys their product, but rather when it is delivered to a dealer. Therefore, it is possible for the manufacturer to inflate sales numbers by requiring dealers to accept more inventory than desired in a practice called channel stuffing. When demand softened following the unique 2003 model year, this news led to a dramatic decline in the stock price. In April 2004 alone, the price of HOG shares dropped from more than $60 to less than $40. Immediately prior to this decline, retiring CEO Jeffrey Bleustein profited $42 million on the exercise of employee stock options. Harley-Davidson was named as a defendant in numerous class action suits filed by investors who claimed they were intentionally defrauded by Harley-Davidson's management and directors. By January 2007, the price of Harley-Davidson shares reached $70.


title: Harley-Davidson

text: Starting around 2000, several police departments started reporting problems with high-speed instability on the Harley-Davidson Touring motorcycles. A Raleigh, North Carolina police officer, Charles Paul, was killed when his 2002 police touring motorcycle crashed after reportedly experiencing a high-speed wobble. The California Highway Patrol conducted testing of the Police Touring motorcycles in 2006. The CHP test riders reported experiencing wobble or weave instability while operating the motorcycles on the test track.


title: Harley-Davidson

text: On February 2, 2007, upon the expiration of their union contract, about 2,700 employees at Harley-Davidson Inc.'s largest manufacturing plant in York, Pennsylvania, went on strike after failing to agree on wages and health benefits. During the pendency of the strike, the company refused to pay for any portion of the striking employees' health care.


title: Harley-Davidson

text: The day before the strike, after the union voted against the proposed contract and to authorize the strike, the company shut down all production at the plant. The York facility employs more than 3,200 workers, both union and non-union.


title: Harley-Davidson

text: Harley-Davidson announced on February 16, 2007, that it had reached a labor agreement with union workers at its largest manufacturing plant, a breakthrough in the two-week-old strike. The strike disrupted Harley-Davidson's national production and was felt in Wisconsin, where 440 employees were laid off, and many Harley suppliers also laid off workers because of the strike.


title: Harley-Davidson

text: On July 11, 2008, Harley-Davidson announced they had signed a definitive agreement to acquire the MV Agusta Group for US$109 million (€70M). MV Agusta Group contains two lines of motorcycles: the high-performance MV Agusta brand and the lightweight Cagiva brand. The acquisition was completed on August 8.


title: Harley-Davidson

text: On October 15, 2009, Harley-Davidson announced that it would divest its interest in MV Agusta. Harley-Davidson Inc. sold Italian motorcycle maker MV Agusta to Claudio Castiglioni – a member of the family that had purchased Aermacchi from H-D in 1978 – for a reported 3 euros, ending the transaction in the first week of August 2010. Castiglioni was MV Agusta's former owner, and had been MV Agusta's chairman since Harley-Davidson bought it in 2008. As part of the deal, Harley-Davidson put $26M into MV Agusta's accounts, essentially giving Castiglioni $26M to take the brand.


title: Harley-Davidson

text: According to Interbrand, the value of the Harley-Davidson brand fell by 43 percent to $4.34 billion in 2009. The fall in value is believed to be connected to the 66 percent drop in the company profits in two-quarters of the previous year. On April 29, 2010, Harley-Davidson stated that they must cut $54 million in manufacturing costs from its production facilities in Wisconsin, and that they would explore alternative U.S. sites to accomplish this. The announcement came in the wake of a massive company-wide restructuring, which began in early 2009 and involved the closing of two factories, one distribution center, and the planned elimination of nearly 25 percent of its total workforce (around 3,500 employees). The company announced on September 14, 2010, that it would remain in Wisconsin.


title: Harley-Davidson

text: The classic Harley-Davidson engines are V-twin engines, with a 45° angle between the cylinders. The crankshaft has a single pin, and both pistons are connected to this pin through their connecting rods.


title: Harley-Davidson

text: This 45° angle is covered under several United States patents and is an engineering tradeoff that allows a large, high-torque engine in a relatively small space. It causes the cylinders to fire at uneven intervals and produces the choppy "potato-potato" sound so strongly linked to the Harley-Davidson brand.


title: Harley-Davidson

text: To simplify the engine and reduce costs, the V-twin ignition was designed to operate with a single set of points and no distributor. This is known as a dual fire ignition system, causing both spark plugs to fire regardless of which cylinder was on its compression stroke, with the other spark plug firing on its cylinder's exhaust stroke, effectively "wasting a spark". The exhaust note is basically a throaty growling sound with some popping.


title: Harley-Davidson

text: The 45° design of the engine thus creates a plug firing sequencing as such: The first cylinder fires, the second (rear) cylinder fires 315° later, then there is a 405° gap until the first cylinder fires again, giving the engine its unique sound.


title: Harley-Davidson

text: Harley-Davidson has used various ignition systems throughout its history – be it the early points and condenser system, (Big Twin and Sportsters up to 1978), magneto ignition system used on some 1958 to 1969 Sportsters, early electronic with centrifugal mechanical advance weights, (all models from mid-1978 until 1979), or the late electronic with a transistorized ignition control module, more familiarly known as the black box or the brain, (all models 1980 to present).


title: Harley-Davidson

text: Starting in 1995, the company introduced Electronic Fuel Injection (EFI) as an option for the 30th anniversary edition Electra Glide. EFI became standard on all Harley-Davidson motorcycles, including Sportsters, upon the introduction of the 2007 product line.


title: Harley-Davidson

text: In 1991, Harley-Davidson began to participate in the Sound Quality Working Group, founded by Orfield Labs, Bruel and Kjaer, TEAC, Yamaha, Sennheiser, SMS and Cortex. This was the nation's first group to share research on psychological acoustics. Later that year, Harley-Davidson participated in a series of sound quality studies at Orfield Labs, based on recordings taken at the Talladega Superspeedway, with the objective to lower the sound level for EU standards while analytically capturing the "Harley Sound". This research resulted in the bikes that were introduced in compliance with EU standards for 1998.


title: Harley-Davidson

text: On February 1, 1994, the company filed a sound trademark application for the distinctive sound of the Harley-Davidson motorcycle engine: "The mark consists of the exhaust sound of applicant's motorcycles, produced by V-twin, common crankpin motorcycle engines when the goods are in use". Nine of Harley-Davidson's competitors filed comments opposing the application, arguing that cruiser-style motorcycles of various brands use a single-crankpin V-twin engine which produce a similar sound. These objections were followed by litigation. In June 2000, the company dropped efforts to federally register its trademark.


title: Harley-Davidson

text: The Revolution engine is based on the VR-1000 Superbike race program, developed by Harley-Davidson's Powertrain Engineering with Porsche helping to make the engine suitable for street use. It is a liquid cooled, dual overhead cam, internally counterbalanced 60 degree V-twin engine with a displacement of 69 cubic inch (1,130 cc), producing at 8,250 rpm at the crank, with a redline of 9,000 rpm. It was introduced for the new VRSC (V-Rod) line in 2001 for the 2002 model year, starting with the single VRSCA (V-Twin Racing Street Custom) model. The Revolution marks Harley's first collaboration with Porsche since the V4 Nova project, which, like the V-Rod, was a radical departure from Harley's traditional lineup until it was cancelled by AMF in 1981 in favor of the Evolution engine.


title: Harley-Davidson

text: A 1,250 cc Screamin' Eagle version of the Revolution engine was made available for 2005 and 2006, and was present thereafter in a single production model from 2005 to 2007. In 2008, the 1,250 cc Revolution Engine became standard for the entire VRSC line. Harley-Davidson claims at the crank for the 2008 VRSCAW model. The VRXSE "Destroyer" dragbike is equipped with a stroker (75 mm crank) Screamin' Eagle 79 cubic inch (1,300 cc) Revolution Engine, producing , and more than .


title: Harley-Davidson

text: 750 cc and 500 cc versions of the Revolution engine are used in Harley-Davidson's Street line of light cruisers. These motors, named the Revolution X, use a single overhead cam, screw and locknut valve adjustment, a single internal counterbalancer, and vertically split crankcases; all of these changes making it different from the original Revolution design.


title: Harley-Davidson

text: An extreme endurance test of the Revolution engine was performed in a dynamometer installation at the Harley-Davidson factory in Milwaukee, simulating the German Autobahn (highways without general speed limit) between the Porsche research and development center in Weissach, near Stuttgart to Düsseldorf. An undisclosed number of samples of engines failed, until an engine successfully passed the 500-hour nonstop run. This was the benchmark for the engineers to approve the start of production for the Revolution engine, which was documented in the Discovery channel special "Harley-Davidson: Birth of the V-Rod", October 14, 2001.


title: Harley-Davidson

text: The first Harley-Davidson motorcycles were powered by single-cylinder IOE engines with the inlet valve operated by engine vacuum, based on the DeDion-Bouton pattern. Singles of this type continued to be made until 1913, when a pushrod and rocker system was used to operate the overhead inlet valve on the single, a similar system having been used on their V-twins since 1911. Single-cylinder motorcycle engines were discontinued in 1918.


title: Harley-Davidson

text: Single-cylinder engines were reintroduced in 1925 as 1926 models. These singles were available either as flathead engines or as overhead valve engines until 1930, after which they were only available as flatheads. The flathead single-cylinder motorcycles were designated Model A for engines with magneto systems only and Model B for engines with battery and coil systems, while overhead valve versions were designated Model AA and Model BA respectively, and a magneto-only racing version was designated Model S. This line of single-cylinder motorcycles ended production in 1934.


title: Harley-Davidson

text: Modern Harley-branded motorcycles fall into one of seven model families: Touring, Softail, Dyna, Sportster, Vrod, Street and LiveWire. These model families are distinguished by the frame, engine, suspension, and other characteristics.


title: Harley-Davidson

text: Touring models use Big-Twin engines and large-diameter telescopic forks. All Touring designations begin with the letters FL, "e.g.", FLHR (Road King) and FLTR (Road Glide).


title: Harley-Davidson

text: The touring family, also known as "dressers" or "baggers", includes Road King, Road Glide, Street Glide and Electra Glide models offered in various trims. The Road Kings have a "retro cruiser" appearance and are equipped with a large clear windshield. Road Kings are reminiscent of big-twin models from the 1940s and 1950s. Electra Glides can be identified by their full front fairings. Most Electra Glides sport a fork-mounted fairing referred to as the "Batwing" due to its unmistakable shape. The Road Glide and Road Glide Ultra Classic have a frame-mounted fairing, referred to as the "Sharknose". The Sharknose includes a unique, dual front headlight.


title: Harley-Davidson

text: Touring models are distinguishable by their large saddlebags, rear coil-over air suspension and are the only models to offer full fairings with radios and CBs. All touring models use the same frame, first introduced with a Shovelhead motor in 1980, and carried forward with only modest upgrades until 2009, when it was extensively redesigned. The frame is distinguished by the location of the steering head in front of the forks and was the first H-D frame to rubber mount the drivetrain to isolate the rider from the vibration of the big V-twin.


title: Harley-Davidson

text: The frame was modified for the 1993 model year when the oil tank went under the transmission and the battery was moved inboard from under the right saddlebag to under the seat. In 1997, the frame was again modified to allow for a larger battery under the seat and to lower seat height. In 2007, Harley-Davidson introduced the Twin Cam 96 engine, as well the six-speed transmission to give the rider better speeds on the highway.


title: Harley-Davidson

text: In 2006, Harley introduced the FLHX Street Glide, a bike designed by Willie G. Davidson to be his personal ride, to its touring line.


title: Harley-Davidson

text: In 2008, Harley added anti-lock braking systems and cruise control as a factory installed option on all touring models (standard on CVO and Anniversary models). Also new for 2008 is the fuel tank for all touring models. 2008 also brought throttle-by-wire to all touring models.


title: Harley-Davidson

text: For the 2009 model year, Harley-Davidson redesigned the entire touring range with several changes, including a new frame, new swingarm, a completely revised engine-mounting system, front wheels for all but the FLHRC Road King Classic, and a 2–1–2 exhaust. The changes result in greater load carrying capacity, better handling, a smoother engine, longer range and less exhaust heat transmitted to the rider and passenger.


title: Harley-Davidson

text: Also released for the 2009 model year is the FLHTCUTG Tri-Glide Ultra Classic, the first three-wheeled Harley since the Servi-Car was discontinued in 1973. The model features a unique frame and a 103-cubic-inch (1,690 cc) engine exclusive to the trike.


title: Harley-Davidson

text: In 2014, Harley-Davidson released a redesign for specific touring bikes and called it "Project Rushmore". Changes include a new 103CI High Output engine, one handed easy open saddlebags and compartments, a new Boom! Box Infotainment system with either 4.3-inch (10 cm) or 6.5-inch (16.5 cm) screens featuring touchscreen functionality [6.5-inch (16.5 cm) models only], Bluetooth (media and phone with approved compatible devices), available GPS and SiriusXM, Text-to-Speech functionality (with approved compatible devices) and USB connectivity with charging. Other features include ABS with Reflex linked brakes, improved styling, Halogen or LED lighting and upgraded passenger comfort.


title: Harley-Davidson

text: These big-twin motorcycles capitalize on Harley's strong value on tradition. With the rear-wheel suspension hidden under the transmission, they are visually similar to the "hardtail" choppers popular in the 1960s and 1970s, as well as from their own earlier history. In keeping with that tradition, Harley offers Softail models with "Heritage" styling that incorporate design cues from throughout their history and used to offer "Springer" front ends on these Softail models from the factory.


title: Harley-Davidson

text: Dyna-frame motorcycles were developed in the 1980s and early 1990s and debuted in the 1991 model year with the FXDB Sturgis offered in limited edition quantities. In 1992 the line continued with the limited edition FXDB Daytona and a production model FXD Super Glide. The new DYNA frame featured big-twin engines and traditional styling. They can be distinguished from the Softail by the traditional coil-over suspension that connects the swingarm to the frame, and from the Sportster by their larger engines. On these models, the transmission also houses the engine's oil reservoir.


title: Harley-Davidson

text: Prior to 2006, Dyna models typically featured a narrow, XL-style 39mm front fork and front wheel, as well as footpegs which the manufacturer included the letter "X" in the model designation to indicate. This lineup traditionally included the Super Glide (FXD), Super Glide Custom (FXDC), Street Bob (FXDB), and Low Rider (FXDL). One exception was the Wide Glide (FXDWG), which featured thicker 41mm forks and a narrow front wheel, but positioned the forks on wider triple-trees that give a beefier appearance. In 2008, the Dyna Fat Bob (FXDF) was introduced to the Dyna lineup, featuring aggressive styling like a new 2–1–2 exhaust, twin headlamps, a 180 mm rear tire, and, for the first time in the Dyna lineup, a 130 mm front tire. For the 2012 model year, the Dyna Switchback (FLD) became the first Dyna to break the tradition of having an FX model designation with floorboards, detachable painted hard saddlebags, touring windshield, headlight nacelle and a wide front tire with full fender. The new front end resembled the big-twin FL models from 1968 to 1971.


title: Harley-Davidson

text: The Dyna family used the 88-cubic-inch (1,440 cc) twin cam from 1999 to 2006. In 2007, the displacement was increased to 96 cubic inches (1,570 cc) as the factory increased the stroke to . For the 2012 model year, the manufacturer began to offer Dyna models with the 103-cubic-inch (1,690 cc) upgrade. All Dyna models use a rubber-mounted engine to isolate engine vibration. Harley discontinued the Dyna platform in 2017 for the 2018 model year, having been replaced by a completely-redesigned Softail chassis; some of the existing models previously released by the company under the Dyna nameplate have since been carried over to the new Softail line.


title: Harley-Davidson

text: Dyna models utilize the big-twin engine (F), footpegs noted as (X) with the exception of the 2012 FLD Switchback, a Dyna model which used floorboards as featured on the Touring (L) models, and the Dyna chassis (D). Therefore, except for the FLD from 2012 to 2016, all Dyna models have designations that begin with FXD, "e.g.", FXDWG (Dyna Wide Glide) and FXDL (Dyna Low Rider).


title: Harley-Davidson

text: Introduced in 1957, the Sportster family were conceived as racing motorcycles, and were popular on dirt and flat-track race courses through the 1960s and 1970s. Smaller and lighter than the other Harley models, contemporary Sportsters make use of 883 cc or 1,200 cc Evolution engines and, though often modified, remain similar in appearance to their racing ancestors.


title: Harley-Davidson

text: Up until the 2003 model year, the engine on the Sportster was rigidly mounted to the frame. The 2004 Sportster received a new frame accommodating a rubber-mounted engine. This made the bike heavier and reduced the available lean angle, while it reduced the amount of vibration transmitted to the frame and the rider, providing a smoother ride for rider and passenger.


title: Harley-Davidson

text: In the 2007 model year, Harley-Davidson celebrated the 50th anniversary of the Sportster and produced a limited edition called the XL50, of which only 2000 were made for sale worldwide. Each motorcycle was individually numbered and came in one of two colors, Mirage Pearl Orange or Vivid Black. Also in 2007, electronic fuel injection was introduced to the Sportster family, and the Nightster model was introduced in mid-year. In 2009, Harley-Davidson added the Iron 883 to the Sportster line, as part of the Dark Custom series.


title: Harley-Davidson

text: In the 2008 model year, Harley-Davidson released the XR1200 Sportster in Europe, Africa, and the Middle East. The XR1200 had an Evolution engine tuned to produce , four-piston dual front disc brakes, and an aluminum swing arm. "Motorcyclist" featured the XR1200 on the cover of its July 2008 issue and was generally positive about it in their "First Ride" story, in which Harley-Davidson was repeatedly asked to sell it in the United States.


title: Harley-Davidson

text: One possible reason for the delayed availability in the United States was the fact that Harley-Davidson had to obtain the "XR1200" naming rights from Storz Performance, a Harley customizing shop in Ventura, Calif. The XR1200 was released in the United States in 2009 in a special color scheme including Mirage Orange highlighting its dirt-tracker heritage. The first 750 XR1200 models in 2009 were pre-ordered and came with a number 1 tag for the front of the bike, autographed by Kenny Coolbeth and Scott Parker and a thank you/welcome letter from the company, signed by Bill Davidson. The XR1200 was discontinued in model year 2013.


title: Harley-Davidson

text: In 2021, Harley-Davidson launched the Sportster S model, with a 121 hp engine and 228 Kg ready-to-ride weight. The Sportster S was one of the first Harleys to come with cornering-ABS and lean-sensitive traction control. The Sportster S is also the first model under the Sportster nameplate since 1957 to receive a completely new engine.


title: Harley-Davidson

text: Except for the street-going XR1000 of the 1980s and the XR1200, most Sportsters made for street use have the prefix XL in their model designation. For the Sportster Evolution engines used since the mid-1980s, there have been two engine sizes. Motorcycles with the smaller engine are designated XL883, while those with the larger engine were initially designated XL1100. When the size of the larger engine was increased from 1,100 cc to 1,200 cc, the designation was changed accordingly from XL1100 to XL1200. Subsequent letters in the designation refer to model variations within the Sportster range, e.g. the XL883C refers to an 883 cc Sportster Custom, while the XL1200S designates the now-discontinued 1200 Sportster Sport.


title: Harley-Davidson

text: Introduced in 2001 and produced until 2017, the VRSC muscle bike family bears little resemblance to Harley's more traditional lineup. Competing against Japanese and American muscle bikes in the upcoming muscle bike/power cruiser segment, the "V-Rod" makes use of the revolution engine that, for the first time in Harley history, incorporates overhead cams and liquid cooling. The V-Rod is visually distinctive, easily identified by the 60-degree V-Twin engine, the radiator and the hydroformed frame members that support the round-topped air cleaner cover. The VRSC platform was also used for factory drag-racing motorcycles.


title: Harley-Davidson

text: In 2008, Harley added the anti-lock braking system as a factory-installed option on all VRSC models. Harley also increased the displacement of the stock engine from , which had only previously been available from Screamin' Eagle, and added a slipper clutch as standard equipment.


title: Harley-Davidson

text: VRSC models utilize the Revolution engine (VR), and the street versions are designated Street Custom (SC). After the VRSC prefix common to all street Revolution bikes, the next letter denotes the model, either A (base V-Rod: discontinued), AW (base V-Rod + W for Wide with a 240 mm rear tire), B (discontinued), D (Night Rod: discontinued), R (Street Rod: discontinued), SE and SEII (CVO Special Edition), or X (Special edition). Further differentiation within models are made with an additional letter, "e.g.", VRSCDX denotes the Night Rod Special.


title: Harley-Davidson

text: The VRXSE V-Rod Destroyer is Harley-Davidson's production drag racing motorcycle, constructed to run the quarter mile in less than ten seconds. It is based on the same revolution engine that powers the VRSC line, but the VRXSE uses the Screamin' Eagle 1,300 cc "stroked" incarnation, featuring a 75 mm crankshaft, 105 mm Pistons, and 58 mm throttle bodies.


title: Harley-Davidson

text: The V-Rod Destroyer is not a street-legal motorcycle. As such, it uses "X" instead of "SC" to denote a non-street bike. "SE" denotes a CVO Special Edition.


title: Harley-Davidson

text: The Street, Harley-Davidson's newest platform and their first all new platform in thirteen years, was designed to appeal to younger riders looking for a lighter bike at a cheaper price. The Street 750 model was launched in India at the 2014 Indian Auto Expo, Delhi-NCR on February 5, 2014. The Street 750 weighs 218 kg and has a ground clearance of 144 mm giving it the lowest weight and the highest ground clearance of Harley-Davidson motorcycles currently available.


title: Harley-Davidson

text: The Street 750 uses an all-new, liquid-cooled, 60° V-twin engine called the Revolution X. In the Street 750, the engine displaces and produces 65 Nm at 4,000 rpm. A six speed transmission is used.


title: Harley-Davidson

text: The Street 750 and the smaller-displacement Street 500 have been available since late 2014. Street series motorcycles for the North American market will be built in Harley-Davidson's Kansas City, Missouri plant, while those for other markets around the world will be built completely in their plant in Bawal, India.


title: Harley-Davidson

text: Harley-Davidson's "LiveWire", released in 2019, is their first electric vehicle. The high-voltage battery provides a minimum city range of 98 miles (158 km). The LiveWire targets a different type of customer than their classic V-twin powered motorcycles.


title: Harley-Davidson

text: In March 2020, a Harley-Davidson LiveWire was used to break the 24-hour distance record for an electric motorcycle. The bike traveled a reported 1,723 km (1,079 miles) in 23 hours and 48 minutes. The LiveWire offers a Level 1 slow recharge, which uses a regular wall outlet to refill an empty battery overnight, or a quick Level 3 DC Fast Charge. The Fast Charge fills the battery most of the way in about 40 minutes. Swiss rider Michel von Tell used the Level 3 charging to make the 24-hour ride.


title: Harley-Davidson

text: In December 2021, the news was published that LiveWire would be spun-off from parent Harley Davidson, set to go public in the first half of 2022 as a special-purpose acquisition company (SPAC) valued at $1.77 billion.


title: Harley-Davidson

text: Custom Vehicle Operations (CVO) is a team within Harley-Davidson that produces limited-edition customizations of Harley's stock models. Every year since 1999, the team has selected two to five of the company's base models and added higher-displacement engines, performance upgrades, special-edition paint jobs, more chromed or accented components, audio system upgrades, and electronic accessories to create high-dollar, premium-quality customizations for the factory custom market. The models most commonly upgraded in such a fashion are the Ultra Classic Electra Glide, which has been selected for CVO treatment every year from 2006 to the present, and the Road King, which was selected in 2002, 2003, 2007, and 2008. The Dyna, Softail, and VRSC families have also been selected for CVO customization.


title: Harley-Davidson

text: The Environmental Protection Agency conducted emissions-certification and representative emissions test in Ann Arbor, Michigan, in 2005. Subsequently, Harley-Davidson produced an "environmental warranty". The warranty ensures each owner that the vehicle is designed and built free of any defects in materials and workmanship that would cause the vehicle to not meet EPA standards. In 2005, the EPA and the Pennsylvania Department of Environmental Protection (PADEP) confirmed Harley-Davidson to be the first corporation to voluntarily enroll in the One Clean-Up Program. This program is designed for the clean-up of the affected soil and groundwater at the former York Naval Ordnance Plant. The program is backed by the state and local government along with participating organizations and corporations.


title: Harley-Davidson

text: Harley-Davidson also purchased most of Castalloy, a South Australian producer of cast motorcycle wheels and hubs. The South Australian government has set forth "protection to the purchaser (Harley-Davidson) against environmental risks".


title: Harley-Davidson

text: In August 2016, Harley-Davidson settled with the EPA for $12 million, without admitting wrongdoing, over the sale of after-market "super tuners". Super tuners were devices, marketed for competition, which enabled increased performance of Harley-Davidson products. However, the devices also modified the emission control systems, producing increased hydrocarbon and nitrogen oxide. Harley-Davidson is required to buy back and destroy any super tuners which do not meet Clean Air Act requirements and spend $3 million on air pollution mitigation.


title: Harley-Davidson

text: According to a recent Harley-Davidson study, in 1987 half of all Harley riders were under age 35. However, by 2006, only 15 percent of Harley buyers were under 35, and as of 2005, the median age had risen to 46.7. In 2008, Harley-Davidson stopped disclosing the average age of riders; at this point it was 48 years old.


title: Harley-Davidson

text: In 1987, the median household income of a Harley-Davidson rider was $38,000. By 1997, the median household income for those riders had more than doubled, to $83,000.


title: Harley-Davidson

text: Many Harley-Davidson Clubs exist nowadays around the world; the oldest one, founded in 1928, is in Prague.


title: Harley-Davidson

text: Harley-Davidson attracts a loyal brand community, with licensing of the Harley-Davidson logo accounting for almost 5 percent of the company's net revenue ($41 million in 2004). Harley-Davidson supplies many American police forces with their motorcycle fleets.


title: Harley-Davidson

text: From its founding, Harley-Davidson had worked to brand its motorcycles as respectable and refined products, with ads that showed what motorcycling writer Fred Rau called "refined-looking ladies with parasols, and men in conservative suits as the target market". The 1906 Harley-Davidson's effective, and polite, muffler was emphasized in advertisements with the nickname "The Silent Gray Fellow". That began to shift in the 1960s, partially in response to the clean-cut motorcyclist portrayed in Honda's "You meet the nicest people on a Honda" campaign, when Harley-Davidson sought to draw a contrast with Honda by underscoring the more working-class, macho, and even a little anti-social attitude associated with motorcycling's dark side. With the 1971 FX Super Glide, the company embraced, rather than distanced, itself from chopper style, and the counterculture custom Harley scene. Their marketing cultivated the "bad boy" image of biker and motorcycle clubs, and to a point, even outlaw or one-percenter motorcycle clubs.


title: Harley-Davidson

text: Beginning in 1920, a team of farm boys, including Ray Weishaar, who became known as the "hog boys", consistently won races. The group had a live hog as their mascot. Following a win, they would put the hog on their Harley and take a victory lap. In 1983, the Motor Company formed a club for owners of its product, taking advantage of the long-standing nickname by turning "hog" into the acronym HOG, for Harley Owners Group. Harley-Davidson attempted to trademark "hog", but lost a case against an independent Harley-Davidson specialist, The Hog Farm of West Seneca, New York, in 1999, when the appellate panel ruled that "hog" had become a generic term for large motorcycles and was therefore unprotectable as a trademark.


title: Harley-Davidson

text: Harley-Davidson FL "big twins" normally had heavy steel fenders, chrome trim, and other ornate and heavy accessories. After World War II, riders wanting more speed would often shorten the fenders or take them off completely to reduce the weight of the motorcycle. These bikes were called "bobbers" or sometimes "choppers", because parts considered unnecessary were chopped off. Those who made or rode choppers and bobbers, especially members of motorcycle clubs like the Hells Angels, referred to stock FLs as "garbage wagons".


title: Harley-Davidson

text: Harley-Davidson established the Harley Owners Group (HOG) in 1983 to build on the loyalty of Harley-Davidson enthusiasts as a means to promote a lifestyle alongside its products. The HOG also opened new revenue streams for the company, with the production of tie-in merchandise offered to club members, numbering more than one million. Other motorcycle brands,


title: Harley-Davidson

text: and other and consumer brands outside motorcycling, have also tried to create factory-sponsored community marketing clubs of their own.


title: Harley-Davidson

text: HOG members typically spend 30 percent more than other Harley owners on such items as clothing and Harley-Davidson-sponsored events.


title: Harley-Davidson

text: Today, more than one million members and more than 1400 chapters worldwide make HOG the largest factory-sponsored motorcycle organization in the world.


title: Harley-Davidson

text: HOG benefits include organized group rides, exclusive products and product discounts, insurance discounts, and the Hog Tales newsletter. A one-year full membership is included with the purchase of a new, unregistered Harley-Davidson.


title: Harley-Davidson

text: In 2008, HOG celebrated its 25th anniversary in conjunction with the Harley 105th in Milwaukee, Wisconsin.


title: Harley-Davidson

text: 3rd Southern HOG Rally set to bring together largest gathering of Harley-Davidson owners in South India. More than 600 Harley-Davidson Owners expected to ride to Hyderabad from across 13 HOG Chapters.


title: Harley-Davidson

text: Harley-Davidson offers factory tours at four of its manufacturing sites, and the Harley-Davidson Museum, which opened in 2008, exhibits Harley-Davidson's history, culture, and vehicles, including the motor company's corporate archives.


title: Harley-Davidson

text: Due to the consolidation of operations, the Capitol Drive Tour Center in Wauwatosa, Wisconsin, was closed in 2009.


title: Harley-Davidson

text: Some of the company's buildings have been listed on state and national historic registers, including:


title: Harley-Davidson

text: Beginning with Harley-Davidson's 90th anniversary in 1993, Harley-Davidson has had celebratory rides to Milwaukee called the "Ride Home". This new tradition has continued every five years, and is referred to unofficially as "Harleyfest", in line with Milwaukee's other festivals (Summerfest, German fest, Festa Italiana, etc.). This event brings Harley riders from all around the world. The 105th anniversary celebration was held on August 28–31, 2008, and included events in Milwaukee, Waukesha, Racine, and Kenosha counties, in Southeast Wisconsin. The 110th-anniversary celebration was held on August 29–31, 2013. The 115th anniversary was held in Prague, Czech Republic, the home country of the oldest existing Harley Davidson Club, on July 5–8, 2018 and attracted more than 100,000 visitors and 60,000 bikes.


title: Harley-Davidson

text: William S. Harley, Arthur Davidson, William A. Davidson and Walter Davidson Sr were, in 2004, inducted into the Labor Hall of Fame for their accomplishments for the H-D company and its workforce.


title: Harley-Davidson

text: The company's origins were dramatized in a 2016 miniseries entitled "Harley and the Davidsons", starring Robert Aramayo as William Harley, Bug Hall as Arthur Davidson and Michiel Huisman as Walter Davidson, and premiered on the Discovery Channel as a "three-night event series" on September 5, 2016.


title: Nickel

text: Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow to react with air under standard conditions because a passivation layer of nickel oxide forms on the surface that prevents further corrosion. Even so, pure native nickel is found in Earth's crust only in tiny amounts, usually in ultramafic rocks, and in the interiors of larger nickel–iron meteorites that were not exposed to oxygen when outside Earth's atmosphere.


title: Nickel

text: Meteoric nickel is found in combination with iron, a reflection of the origin of those elements as major end products of supernova nucleosynthesis. An iron–nickel mixture is thought to compose Earth's outer and inner cores.


title: Nickel

text: Use of nickel (as natural meteoric nickel–iron alloy) has been traced as far back as 3500 BCE. Nickel was first isolated and classified as an element in 1751 by Axel Fredrik Cronstedt, who initially mistook the ore for a copper mineral, in the cobalt mines of Los, Hälsingland, Sweden. The element's name comes from a mischievous sprite of German miner mythology, Nickel (similar to Old Nick), who personified the fact that copper-nickel ores resisted refinement into copper. An economically important source of nickel is the iron ore limonite, which is often 1–2% nickel. Other important nickel ore minerals include pentlandite and a mix of Ni-rich natural silicates known as garnierite. Major production sites include the Sudbury region, Canada (which is thought to be of meteoric origin), New Caledonia in the Pacific, and Norilsk, Russia.


title: Nickel

text: Nickel is one of four elements (the others are iron, cobalt, and gadolinium) that are ferromagnetic at about room temperature. Alnico permanent magnets based partly on nickel are of intermediate strength between iron-based permanent magnets and rare-earth magnets. The metal is used chiefly in alloys and corrosion-resistant plating. About 68% of world production is used in stainless steel. A further 10% is used for nickel-based and copper-based alloys, 9% for plating, 7% for alloy steels, 3% in foundries, and 4% in other applications such as in rechargeable batteries, including those in electric vehicles (EVs). Nickel is widely used in coins, though nickel-plated objects sometimes provoke nickel allergy. As a compound, nickel has a number of niche chemical manufacturing uses, such as a catalyst for hydrogenation, cathodes for rechargeable batteries, pigments and metal surface treatments. Nickel is an essential nutrient for some microorganisms and plants that have enzymes with nickel as an active site.


title: Nickel

text: Nickel is a silvery-white metal with a slight golden tinge that takes a high polish. It is one of only four elements that are ferromagnetic at or near room temperature; the others are iron, cobalt and gadolinium. Its Curie temperature is , meaning that bulk nickel is non-magnetic above this temperature. The unit cell of nickel is a face-centered cube with the lattice parameter of 0.352 nm, giving an atomic radius of 0.124 nm. This crystal structure is stable to pressures of at least 70 GPa. Nickel is hard, malleable and ductile, and has a relatively high electrical and thermal conductivity for transition metals. The high compressive strength of 34 GPa, predicted for ideal crystals, is never obtained in the real bulk material due to formation and movement of dislocations. However, it has been reached in Ni nanoparticles.


title: Nickel

text: Nickel has two atomic electron configurations, [Ar] 3d 4s and [Ar] 3d 4s, which are very close in energy; [Ar] denotes the complete argon core structure. There is some disagreement on which configuration has the lower energy. Chemistry textbooks quote nickel's electron configuration as [Ar] 4s 3d, also written [Ar] 3d 4s. This configuration agrees with the Madelung energy ordering rule, which predicts that 4s is filled before 3d. It is supported by the experimental fact that the lowest energy state of the nickel atom is a 3d 4s energy level, specifically the 3d(F) 4s F, "J" = 4 level.


title: Nickel

text: However, each of these two configurations splits into several energy levels due to fine structure, and the two sets of energy levels overlap. The average energy of states with [Ar] 3d 4s is actually lower than the average energy of states with [Ar] 3d 4s. Therefore, the research literature on atomic calculations quotes the ground state configuration as [Ar] 3d 4s.


title: Nickel

text: Natural nickel is composed of five stable isotopes, , , , and , of which is the most abundant (68.077% natural abundance).


title: Nickel

text: Nickel-62 has the highest binding energy per nucleon of any nuclide: 8.7946 MeV/nucleon. Its binding energy is greater than both and , more abundant nuclides often incorrectly cited as having the highest binding energy. Though this would seem to predict nickel as the most abundant heavy element in the universe, the high rate of photodisintegration of nickel in stellar interiors causes iron to be by far the most abundant.


title: Nickel

text: Nickel-60 is the daughter product of the extinct radionuclide (half-life 2.6 million years). Due to the long half-life of , its persistence in materials in the Solar System may generate observable variations in the isotopic composition of . Therefore, the abundance of in extraterrestrial material may give insight into the origin of the Solar System and its early history.


title: Nickel

text: At least 26 nickel radioisotopes have been characterized; the most stable are with half-life 76,000 years, (100 years), and (6 days). All other radioisotopes have half-lives less than 60 hours and most these have half-lives less than 30 seconds. This element also has one meta state.


title: Nickel

text: Radioactive nickel-56 is produced by the silicon burning process and later set free in large amounts in type Ia supernovae. The shape of the light curve of these supernovae at intermediate to late-times corresponds to the decay via electron capture of to cobalt-56 and ultimately to iron-56. Nickel-59 is a long-lived cosmogenic radionuclide; half-life 76,000 years. has found many applications in isotope geology. has been used to date the terrestrial age of meteorites and to determine abundances of extraterrestrial dust in ice and sediment. The half-life of nickel-78 was recently measured at 110 milliseconds, and is believed an important isotope in supernova nucleosynthesis of elements heavier than iron. Ni, discovered in 1999, is the most proton-rich heavy element isotope known. With 28 protons and 20 neutrons, Ni is "doubly magic", as is Ni with 28 protons and 50 neutrons. Both are therefore unusually stable for nuclei with so large a proton–neutron imbalance.


title: Nickel

text: Nickel-63 is a contaminant found in the support structure of nuclear reactors. It is produced through neutron capture by nickel-62. Small amounts have also been found near nuclear weapon test sites in the South Pacific.


title: Nickel

text: On Earth, nickel occurs most often in combination with sulfur and iron in pentlandite, with sulfur in millerite, with arsenic in the mineral nickeline, and with arsenic and sulfur in nickel galena. Nickel is commonly found in iron meteorites as the alloys kamacite and taenite. Nickel in meteorites was first detected in 1799 by Joseph-Louis Proust, a French chemist who then worked in Spain. Proust analyzed samples of the meteorite from Campo del Cielo (Argentina), which had been obtained in 1783 by Miguel Rubín de Celis, discovering the presence in them of nickel (about 10%) along with iron.


title: Nickel

text: The bulk of nickel is mined from two types of ore deposits. The first is laterite, where the principal ore mineral mixtures are nickeliferous limonite, (Fe,Ni)O(OH), and garnierite (a mixture of various hydrous nickel and nickel-rich silicates). The second is magmatic sulfide deposits, where the principal ore mineral is pentlandite: .


title: Nickel

text: Identified land-based resources throughout the world averaging 1% nickel or greater comprise at least 130 million tons of nickel (about the double of known reserves). About 60% is in laterites and 40% in sulfide deposits.


title: Nickel

text: On geophysical evidence, most of the nickel on Earth is believed to be in Earth's outer and inner cores. Kamacite and taenite are naturally occurring alloys of iron and nickel. For kamacite, the alloy is usually in the proportion of 90:10 to 95:5, though impurities (such as cobalt or carbon) may be present. Taenite is 20% to 65% nickel. Kamacite and taenite are also found in nickel iron meteorites.


title: Nickel

text: The most common oxidation state of nickel is +2, but compounds of , , and are well known, and the exotic oxidation states and have been produced and studied.


title: Nickel

text: Nickel tetracarbonyl ), discovered by Ludwig Mond, is a volatile, highly toxic liquid at room temperature. On heating, the complex decomposes back to nickel and carbon monoxide:


title: Nickel

text: This behavior is exploited in the Mond process for purifying nickel, as described above. The related nickel(0) complex bis(cyclooctadiene)nickel(0) is a useful catalyst in organonickel chemistry because the cyclooctadiene (or "cod") ligands are easily displaced.


title: Nickel

text: Nickel(I) complexes are uncommon, but one example is the tetrahedral complex . Many nickel(I) complexes have Ni–Ni bonding, such as the dark red diamagnetic prepared by reduction of with sodium amalgam. This compound is oxidized in water, liberating .


title: Nickel

text: It is thought that the nickel(I) oxidation state is important to nickel-containing enzymes, such as [NiFe]-hydrogenase, which catalyzes the reversible reduction of protons to .


title: Nickel

text: Nickel(II) forms compounds with all common anions, including sulfide, sulfate, carbonate, hydroxide, carboxylates, and halides. Nickel(II) sulfate is produced in large amounts by dissolving nickel metal or oxides in sulfuric acid, forming both a hexa- and heptahydrate useful for electroplating nickel. Common salts of nickel, such as chloride, nitrate, and sulfate, dissolve in water to give green solutions of the metal aquo complex .


title: Nickel

text: The four halides form nickel compounds, which are solids with molecules with octahedral Ni centres. Nickel(II) chloride is most common, and its behavior is illustrative of the other halides. Nickel(II) chloride is made by dissolving nickel or its oxide in hydrochloric acid. It is usually found as the green hexahydrate, whose formula is usually written . When dissolved in water, this salt forms the metal aquo complex . Dehydration of gives yellow anhydrous .


title: Nickel

text: Some tetracoordinate nickel(II) complexes, e.g. bis(triphenylphosphine)nickel chloride, exist both in tetrahedral and square planar geometries. The tetrahedral complexes are paramagnetic; the square planar complexes are diamagnetic. In having properties of magnetic equilibrium and formation of octahedral complexes, they contrast with the divalent complexes of the heavier group 10 metals, palladium(II) and platinum(II), which form only square-planar geometry.


title: Nickel

text: Many Ni(III) compounds are known. The first such compounds are , where X = Cl, Br, I and R = ethyl, propyl, butyl. Further, Ni(III) forms simple salts with fluoride or oxide ions. Ni(III) can be stabilized by σ-donor ligands such as thiols and organophosphines.


title: Nickel

text: Ni(III) occurs in nickel oxide hydroxide, which is used as the cathode in many rechargeable batteries, including nickel-cadmium, nickel-iron, nickel hydrogen, and nickel-metal hydride, and used by certain manufacturers in Li-ion batteries.


title: Nickel

text: Ni(IV) occurs in the mixed oxide . Ni(IV) remains a rare oxidation state and very few compounds are known.


title: Nickel

text: Because nickel ores are easily mistaken for ores of silver and copper, understanding of this metal and its use, is relatively recent. But unintentional use of nickel is ancient, and can be traced back as far as 3500 BCE. Bronzes from what is now Syria have been found to contain as much as 2% nickel. Some ancient Chinese manuscripts suggest that "white copper" (cupronickel, known as "baitong") was used there in 1700-1400 BCE. This Paktong white copper was exported to Britain as early as the 17th century, but the nickel content of this alloy was not discovered until 1822. Coins of nickel-copper alloy were minted by Bactrian kings Agathocles, Euthydemus II, and Pantaleon in the 2nd century BCE, possibly out of the Chinese cupronickel.


title: Nickel

text: In medieval Germany, a metallic yellow mineral was found in the Erzgebirge (Ore Mountains) that resembled copper ore. But when miners were unable to get any copper from it, they blamed a mischievous sprite of German mythology, Nickel (similar to "Old Nick"), for besetting the copper. They called this ore "Kupfernickel" from German "Kupfer" 'copper'. This ore is now known as the mineral nickeline (formerly "niccolite"), a nickel arsenide. In 1751, Baron Axel Fredrik Cronstedt tried to extract copper from kupfernickel at a cobalt mine in the village of Los, Sweden, and instead produced a white metal that he named "nickel" after the spirit that had given its name to the mineral. In modern German, Kupfernickel or Kupfer-Nickel designates the alloy cupronickel.


title: Nickel

text: Originally, the only source for nickel was the rare Kupfernickel. Beginning in 1824, nickel was obtained as a byproduct of cobalt blue production. The first large-scale smelting of nickel began in Norway in 1848 from nickel-rich pyrrhotite. The introduction of nickel in steel production in 1889 increased the demand for nickel; the nickel deposits of New Caledonia, discovered in 1865, provided most of the world's supply between 1875 and 1915. The discovery of the large deposits in the Sudbury Basin, Canada in 1883, in Norilsk-Talnakh, Russia in 1920, and in the Merensky Reef, South Africa in 1924, made large-scale nickel production possible.


title: Nickel

text: Aside from the aforementioned Bactrian coins, nickel was not a component of coins until the mid-19th century.


title: Nickel

text: 99.9% nickel five-cent coins were struck in Canada (the world's largest nickel producer at the time) during non-war years from 1922 to 1981; the metal content made these coins magnetic. During the war years 1942–45, most or all nickel was removed from Canadian and US coins to save it for making armor. Canada used 99.9% nickel from 1968 in its higher-value coins until 2000.


title: Nickel

text: In the United States, the term "nickel" or "nick" originally applied to the copper-nickel Flying Eagle cent, which replaced copper with 12% nickel 1857–58, then the Indian Head cent of the same alloy from 1859 to 1864. Still later, in 1865, the term designated the three-cent nickel, with nickel increased to 25%. In 1866, the five-cent shield nickel (25% nickel, 75% copper) appropriated the designation, which has been used ever since for the subsequent 5-cent pieces. This alloy proportion is not ferromagnetic.


title: Nickel

text: The US nickel coin contains of nickel, which at the April 2007 price was worth 6.5 cents, along with 3.75 grams of copper worth about 3 cents, with a total metal value of more than 9 cents. Since the face value of a nickel is 5 cents, this made it an attractive target for melting by people wanting to sell the metals at a profit. The United States Mint, anticipating this practice, implemented new interim rules on December 14, 2006, subject to public comment for 30 days, which criminalized the melting and export of cents and nickels. Violators can be punished with a fine of up to $10,000 and/or a maximum of five years in prison. As of September 19, 2013, the melt value of a US nickel (copper and nickel included) is $0.045 (90% of the face value).


title: Nickel

text: In the 21st century, the high price of nickel has led to some replacement of the metal in coins around the world. Coins still made with nickel alloys include one- and two-euro coins, 5¢, 10¢, 25¢, 50¢, and $1 U.S. coins, and 20p, 50p, £1, and £2 UK coins. From 2012 on the nickel-alloy used for 5p and 10p UK coins was replaced with nickel-plated steel. This ignited a public controversy regarding the problems of people with nickel allergy.


title: Nickel

text: An estimated 2.7 million tonnes (t) of nickel per year are mined worldwide; Indonesia (1,000,000 t), the Philippines (370,000 t), Russia (250,000 t), New Caledonia (France) (190,000 t), Australia (160,000 t) and Canada (130,000 t) are the largest producers as of 2021. The largest nickel deposits in non-Russian Europe are in Finland and Greece. Identified land-based sources averaging at least 1% nickel contain at least 130 million tonnes of nickel. About 60% is in laterites and 40% is in sulfide deposits. Also, extensive nickel sources are found in the depths of the Pacific Ocean, especially in an area called the Clarion Clipperton Zone in the form of polymetallic nodules peppering the seafloor at 3.5–6 km below sea level. These nodules are composed of numerous rare-earth metals and are estimated to be 1.7% nickel. With advances in science and engineering, regulation is currently being set in place by the International Seabed Authority to ensure that these nodules are collected in an environmentally conscientious manner while adhering to the United Nations Sustainable Development Goals.


title: Nickel

text: The one place in the United States where nickel has been profitably mined is Riddle, Oregon, with several square miles of nickel-bearing garnierite surface deposits. The mine closed in 1987. The Eagle mine project is a new nickel mine in Michigan's Upper Peninsula. Construction was completed in 2013, and operations began in the third quarter of 2014. In the first full year of operation, the Eagle Mine produced 18,000 t.


title: Nickel

text: Nickel is obtained through extractive metallurgy: it is extracted from ore by conventional roasting and reduction processes that yield metal of greater than 75% purity. In many stainless steel applications, 75% pure nickel can be used without further purification, depending on impurities.


title: Nickel

text: Traditionally, most sulfide ores are processed using pyrometallurgical techniques to produce a matte for further refining. Recent advances in hydrometallurgical techniques result in significantly purer metallic nickel product. Most sulfide deposits have traditionally been processed by concentration through a froth flotation process followed by pyrometallurgical extraction. In hydrometallurgical processes, nickel sulfide ores are concentrated with flotation (differential flotation if Ni/Fe ratio is too low) and then smelted. The nickel matte is further processed with the Sherritt-Gordon process. First, copper is removed by adding hydrogen sulfide, leaving a concentrate of cobalt and nickel. Then, solvent extraction is used to separate the cobalt and nickel, with the final nickel content greater than 99%.


title: Nickel

text: A second common refining process is leaching the metal matte into a nickel salt solution, followed by electrowinning the nickel from solution by plating it onto a cathode as electrolytic nickel.


title: Nickel

text: The purest metal is obtained from nickel oxide by the Mond process, which gives a purity of over 99.99%. The process was patented by Ludwig Mond and has been in industrial use since before the beginning of the 20th century. In this process, nickel is reacted with carbon monoxide in the presence of a sulfur catalyst at around 40–80 °C to form nickel carbonyl. In a similar reaction with iron, iron pentacarbonyl can form, though this reaction is slow. If necessary, the nickel may be separated by distillation. Dicobalt octacarbonyl is also formed in nickel distillation as a by-product, but it decomposes to tetracobalt dodecacarbonyl at the reaction temperature to give a non-volatile solid.


title: Nickel

text: Nickel is obtained from nickel carbonyl by one of two processes. It may be passed through a large chamber at high temperatures in which tens of thousands of nickel spheres (pellets) are constantly stirred. The carbonyl decomposes and deposits pure nickel onto the spheres. In the alternate process, nickel carbonyl is decomposed in a smaller chamber at 230 °C to create a fine nickel powder. The byproduct carbon monoxide is recirculated and reused. The highly pure nickel product is known as "carbonyl nickel".


title: Nickel

text: The market price of nickel surged throughout 2006 and the early months of 2007; , the metal was trading at US$52,300/tonne or $1.47/oz. The price later fell dramatically; , the metal was trading at $11,000/tonne, or $0.31/oz. During the 2022 Russian invasion of Ukraine, worries about sanctions on Russian nickel exports triggered a short squeeze, causing the price of nickel to quadruple in just two days, reaching US$100,000 per tonne. The London Metal Exchange cancelled contracts worth $3.9 billion and suspended nickel trading for over a week. Analyst Andy Home argued that such price shocks are exacerbated by the purity requirements imposed by metal markets: only Grade I (99.8% pure) metal can be used as a commodity on the exchanges, but most of the world's supply is either in ferro-nickel alloys or lower-grade purities.


title: Nickel

text: Global use of nickel is currently 68% in stainless steel, 10% in nonferrous alloys, 9% electroplating, 7% alloy steel, 3% foundries, and 4% other (including batteries).


title: Nickel

text: Nickel is used in many recognizable industrial and consumer products, including stainless steel, alnico magnets, coinage, rechargeable batteries (e.g. nickel-iron), electric guitar strings, microphone capsules, plating on plumbing fixtures, and special alloys such as permalloy, elinvar, and invar. It is used for plating and as a green tint in glass. Nickel is preeminently an alloy metal, and its chief use is in nickel steels and nickel cast irons, in which it typically increases the tensile strength, toughness, and elastic limit. It is widely used in many other alloys, including nickel brasses and bronzes and alloys with copper, chromium, aluminium, lead, cobalt, silver, and gold (Inconel, Incoloy, Monel, Nimonic).


title: Nickel

text: Because nickel is resistant to corrosion, it was occasionally used as a substitute for decorative silver. Nickel was also occasionally used in some countries after 1859 as a cheap coinage metal (see above), but in the later years of the 20th century, it was replaced by cheaper stainless steel (i.e., iron) alloys, except in the United States and Canada.


title: Nickel

text: Nickel is an excellent alloying agent for certain precious metals and is used in the fire assay as a collector of platinum group elements (PGE). As such, nickel can fully collect all six PGEs from ores, and can partially collect gold. High-throughput nickel mines may also do PGE recovery (mainly platinum and palladium); examples are Norilsk, Russia and the Sudbury Basin, Canada.


title: Nickel

text: Nickel and its alloys are often used as catalysts for hydrogenation reactions. Raney nickel, a finely divided nickel-aluminium alloy, is one common form, though related catalysts are also used, including Raney-type catalysts.


title: Nickel

text: Nickel is naturally magnetostrictive: in the presence of a magnetic field, the material undergoes a small change in length. The magnetostriction of nickel is on the order of 50 ppm and is negative, indicating that it contracts.


title: Nickel

text: Nickel is used as a binder in the cemented tungsten carbide or hardmetal industry and used in proportions of 6% to 12% by weight. Nickel makes the tungsten carbide magnetic and adds corrosion-resistance to the cemented parts, though the hardness is less than those with cobalt binder.


title: Nickel

text: , with half-life 100.1 years, is useful in krytron devices as a beta particle (high-speed electron) emitter to make ionization by the keep-alive electrode more reliable. It is being investigated as a power source for betavoltaic batteries.


title: Nickel

text: Around 27% of all nickel production is used for engineering, 10% for building and construction, 14% for tubular products, 20% for metal goods, 14% for transport, 11% for electronic goods, and 5% for other uses.


title: Nickel

text: Raney nickel is widely used for hydrogenation of unsaturated oils to make margarine, and substandard margarine and leftover oil may contain nickel as a contaminant. Forte et al. found that type 2 diabetic patients have 0.89 ng/mL of Ni in the blood relative to 0.77 ng/mL in control subjects.


title: Nickel

text: It was not recognized until the 1970s, but nickel is known to play an important role in the biology of some plants, bacteria, archaea, and fungi. Nickel enzymes such as urease are considered virulence factors in some organisms. Urease catalyzes hydrolysis of urea to form ammonia and carbamate. NiFe hydrogenases can catalyze oxidation of to form protons and electrons; and also the reverse reaction, the reduction of protons to form hydrogen gas. A nickel-tetrapyrrole coenzyme, cofactor F430, is present in methyl coenzyme M reductase, which can catalyze the formation of methane, or the reverse reaction, in methanogenic archaea (in +1 oxidation state). One of the carbon monoxide dehydrogenase enzymes consists of an Fe-Ni-S cluster. Other nickel-bearing enzymes include a rare bacterial class of superoxide dismutase and glyoxalase I enzymes in bacteria and several eukaryotic trypanosomal parasites (in other organisms, including yeast and mammals, this enzyme contains divalent ).


title: Nickel

text: Dietary nickel may affect human health through infections by nickel-dependent bacteria, but nickel may also be an essential nutrient for bacteria living in the large intestine, in effect functioning as a prebiotic. The US Institute of Medicine has not confirmed that nickel is an essential nutrient for humans, so neither a Recommended Dietary Allowance (RDA) nor an Adequate Intake have been established. The tolerable upper intake level of dietary nickel is 1 mg/day as soluble nickel salts. Estimated dietary intake is 70 to 100 µg/day; less than 10% is absorbed. What is absorbed is excreted in urine. Relatively large amounts of nickel – comparable to the estimated average ingestion above – leach into food cooked in stainless steel. For example, the amount of nickel leached after 10 cooking cycles into one serving of tomato sauce averages 88 µg.


title: Nickel

text: Nickel released from Siberian Traps volcanic eruptions is suspected of helping the growth of "Methanosarcina", a genus of euryarchaeote archaea that produced methane in the Permian–Triassic extinction event, the biggest known mass extinction.


title: Nickel

text: The major source of nickel exposure is oral consumption, as nickel is essential to plants. Typical background concentrations of nickel do not exceed 20 ng/m in air, 100 mg/kg in soil, 10 mg/kg in vegetation, 10 μg/L in freshwater and 1 μg/L in seawater. Environmental concentrations may be increased by human pollution. For example, nickel-plated faucets may contaminate water and soil; mining and smelting may dump nickel into wastewater; nickel–steel alloy cookware and nickel-pigmented dishes may release nickel into food. Air may be polluted by nickel ore refining and fossil fuel combustion. Humans may absorb nickel directly from tobacco smoke and skin contact with jewelry, shampoos, detergents, and coins. A less common form of chronic exposure is through hemodialysis as traces of nickel ions may be absorbed into the plasma from the chelating action of albumin.


title: Nickel

text: The average daily exposure is not a threat to human health. Most nickel absorbed by humans is removed by the kidneys and passed out of the body through urine or is eliminated through the gastrointestinal tract without being absorbed. Nickel is not a cumulative poison, but larger doses or chronic inhalation exposure may be toxic, even carcinogenic, and constitute an occupational hazard.


title: Nickel

text: Nickel compounds are classified as human carcinogens<ref name="Reg 1272/2008">Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on Classification, Labelling and Packaging of Substances and Mixtures, Amending and Repealing Directives 67/548/EEC and 1999/45/EC and amending Regulation (EC) No 1907/2006 [OJ L 353, 31.12.2008, p. 1]. Annex VI . Accessed July 13, 2017.</ref> based on increased respiratory cancer risks observed in epidemiological studies of sulfidic ore refinery workers. This is supported by the positive results of the NTP bioassays with Ni sub-sulfide and Ni oxide in rats and mice. The human and animal data consistently indicate a lack of carcinogenicity via the oral route of exposure and limit the carcinogenicity of nickel compounds to respiratory tumours after inhalation. Nickel metal is classified as a suspect carcinogen; there is consistency between the absence of increased respiratory cancer risks in workers predominantly exposed to metallic nickel and the lack of respiratory tumours in a rat lifetime inhalation carcinogenicity study with nickel metal powder. In the rodent inhalation studies with various nickel compounds and nickel metal, increased lung inflammations with and without bronchial lymph node hyperplasia or fibrosis were observed. In rat studies, oral ingestion of water-soluble nickel salts can trigger perinatal mortality in pregnant animals. Whether these effects are relevant to humans is unclear as epidemiological studies of highly exposed female workers have not shown adverse developmental toxicity effects.


title: Nickel

text: People can be exposed to nickel in the workplace by inhalation, ingestion, and contact with skin or eye. The Occupational Safety and Health Administration (OSHA) has set the legal limit (permissible exposure limit) for the workplace at 1 mg/m per 8-hour workday, excluding nickel carbonyl. The National Institute for Occupational Safety and Health (NIOSH) sets the recommended exposure limit (REL) at 0.015 mg/m per 8-hour workday. At 10 mg/m, nickel is immediately dangerous to life and health. Nickel carbonyl is an extremely toxic gas. The toxicity of metal carbonyls is a function of both the toxicity of the metal and the off-gassing of carbon monoxide from the carbonyl functional groups; nickel carbonyl is also explosive in air.


title: Nickel

text: Sensitized persons may show a skin contact allergy to nickel known as a contact dermatitis. Highly sensitized persons may also react to foods with high nickel content. Patients with pompholyx may also be sensitive to nickel. Nickel is the top confirmed contact allergen worldwide, partly due to its use in jewelry for pierced ears. Nickel allergies affecting pierced ears are often marked by itchy, red skin. Many earrings are now made without nickel or with low-release nickel to address this problem. The amount allowed in products that contact human skin is now regulated by the European Union. In 2002, researchers found that the nickel released by 1 and 2 euro coins, far exceeded those standards. This is believed to be due to a galvanic reaction. Nickel was voted Allergen of the Year in 2008 by the American Contact Dermatitis Society. In August 2015, the American Academy of Dermatology adopted a position statement on the safety of nickel: "Estimates suggest that contact dermatitis, which includes nickel sensitization, accounts for approximately $1.918 billion and affects nearly 72.29 million people."


title: Nickel

text: Reports show that both the nickel-induced activation of hypoxia-inducible factor (HIF-1) and the up-regulation of hypoxia-inducible genes are caused by depletion of intracellular ascorbate. The addition of ascorbate to the culture medium increased the intracellular ascorbate level and reversed both the metal-induced stabilization of HIF-1- and HIF-1α-dependent gene expression.


title: Surrender of Japan

text: The surrender of the Empire of Japan in World War II was announced by Emperor Hirohito on 15 August and formally signed on 2 September 1945, bringing the war's hostilities to a close. By the end of July 1945, the Imperial Japanese Navy (IJN) had become incapable of conducting major operations and an Allied invasion of Japan was imminent. Together with the United Kingdom and China, the United States called for the unconditional surrender of the Japanese armed forces in the Potsdam Declaration on 26 July 1945—the alternative being "prompt and utter destruction". While publicly stating their intent to fight on to the bitter end, Japan's leaders (the Supreme Council for the Direction of the War, also known as the "Big Six") were privately making entreaties to the publicly neutral Soviet Union to mediate peace on terms more favorable to the Japanese. While maintaining a sufficient level of diplomatic engagement with the Japanese to give them the impression they might be willing to mediate, the Soviets were covertly preparing to attack Japanese forces in Manchuria and Korea (in addition to South Sakhalin and the Kuril Islands) in fulfillment of promises they had secretly made to the United States and the United Kingdom at the Tehran and Yalta Conferences.


title: Surrender of Japan

text: On 6 August 1945, at 8:15 AM local time, the United States detonated an atomic bomb over the Japanese city of Hiroshima. Sixteen hours later, American President Harry S. Truman called again for Japan's surrender, warning them to "expect a rain of ruin from the air, the like of which has never been seen on this earth." Late in the evening of 8 August 1945, in accordance with the Yalta agreements, but in violation of the Soviet–Japanese Neutrality Pact, the Soviet Union declared war on Japan, and soon after midnight on 9 August 1945, the Soviet Union invaded the Imperial Japanese puppet state of Manchukuo. Hours later, the United States dropped a second atomic bomb, this time on the Japanese city of Nagasaki. Following these events, Emperor Hirohito intervened and ordered the Supreme Council for the Direction of the War to accept the terms the Allies had set down in the Potsdam Declaration for ending the war. After several more days of behind-the-scenes negotiations and a failed "coup d'état", Emperor Hirohito gave a recorded radio address across the Empire on 15 August announcing the surrender of Japan to the Allies.


title: Surrender of Japan

text: On 28 August, the occupation of Japan led by the Supreme Commander for the Allied Powers began. The surrender ceremony was held on 2 September, aboard the United States Navy battleship , at which officials from the Japanese government signed the Japanese Instrument of Surrender, thereby ending the hostilities. Allied civilians and military personnel alike celebrated V-J Day, the end of the war; however, isolated soldiers and personnel from Japan's far-flung forces throughout Asia and the Pacific refused to surrender for months and years afterwards, some even refusing into the 1970s. The role of the atomic bombings in Japan's unconditional surrender, and the ethics of the two attacks, is still debated. The state of war formally ended when the Treaty of San Francisco came into force on 28 April 1952. Four more years passed before Japan and the Soviet Union signed the Soviet–Japanese Joint Declaration of 1956, which formally brought an end to their state of war.


title: Surrender of Japan

text: By 1945, the Japanese had suffered a string of defeats for nearly two years in the South West Pacific, India, the Marianas campaign, and the Philippines campaign. In July 1944, following the loss of Saipan, General Hideki Tōjō was replaced as prime minister by General Kuniaki Koiso, who declared that the Philippines would be the site of the decisive battle. After the Japanese loss of the Philippines, Koiso in turn was replaced by Admiral Kantarō Suzuki. The Allies captured the nearby islands of Iwo Jima and Okinawa in the first half of 1945. Okinawa was to be a staging area for Operation Downfall, the Allied invasion of the Japanese Home Islands. Following Germany's defeat, the Soviet Union began quietly redeploying its battle-hardened forces from the European theatre to the Far East, in addition to about forty divisions that had been stationed there since 1941, as a counterbalance to the million-strong Kwantung Army.


title: Surrender of Japan

text: The Allied submarine campaign and the mining of Japanese coastal waters had largely destroyed the Japanese merchant fleet. With few natural resources, Japan was dependent on raw materials, particularly oil, imported from Manchuria and other parts of the East Asian mainland, and from the conquered territory in the Dutch East Indies. The destruction of the Japanese merchant fleet, combined with the strategic bombing of Japanese industry, had wrecked Japan's war economy. Production of coal, iron, steel, rubber, and other vital supplies was only a fraction of that before the war.


title: Surrender of Japan

text: As a result of the losses it had suffered, the Imperial Japanese Navy (IJN) had ceased to be an effective fighting force. Following a series of raids on the Japanese shipyard at Kure, the only major warships in somewhat fighting order were six aircraft carriers, four cruisers, and one battleship, of which many were heavily damaged and none could be fueled adequately. Although 19 destroyers and 38 submarines were still operational, their use was also limited by the lack of fuel.


title: Surrender of Japan

text: Faced with the prospect of an invasion of the Home Islands, starting with Kyūshū, and the prospect of a Soviet invasion of Manchuria—Japan's last source of natural resources—the War Journal of the Imperial Headquarters concluded in 1944:


title: Surrender of Japan

text: As a final attempt to stop the Allied advances, the Japanese Imperial High Command planned an all-out defense of Kyūshū codenamed Operation Ketsugō. This was to be a radical departure from the defense in depth plans used in the invasions of Peleliu, Iwo Jima, and Okinawa. Instead, everything was staked on the beachhead; more than 3,000 kamikazes would be sent to attack the amphibious transports before troops and cargo were disembarked on the beach.


title: Surrender of Japan

text: If this did not drive the Allies away, they planned to send another 3,500 kamikazes along with 5,000 "Shin'yō" suicide motorboats and the remaining destroyers and submarines—"the last of the Navy's operating fleet"—to the beach. If the Allies had fought through this and successfully landed on Kyūshū, 3,000 planes would have been left to defend the remaining islands, although Kyūshū would be "defended to the last" regardless. The strategy of making a last stand at Kyūshū was based on the assumption of continued Soviet neutrality.


title: Surrender of Japan

text: Japanese policy-making centered on the Supreme Council for the Direction of the War (created in 1944 by earlier Prime Minister Kuniaki Koiso), the so-called "Big Six"—the Prime Minister, Minister of Foreign Affairs, Minister of the Army, Minister of the Navy, Chief of the Army General Staff, and Chief of the Navy General Staff. At the formation of the Suzuki government in April 1945, the council's membership consisted of:


title: Surrender of Japan

text: All of these positions were nominally appointed by the Emperor and their holders were answerable directly to him. Nevertheless, Japanese civil law from 1936 required that the Army and Navy ministers had to be active duty flag officers from those respective services while Japanese military law from long before that time prohibited serving officers from accepting political offices without first obtaining permission from their respective service headquarters which, if and when granted, could be rescinded at any time. Thus, the Japanese Army and Navy effectively held a legal right to nominate (or refuse to nominate) their respective ministers, in addition to the effective right to order their respective ministers to resign their posts.


title: Surrender of Japan

text: Strict constitutional convention dictated (as it technically still does today) that a prospective Prime Minister could not assume the premiership, nor could an incumbent Prime Minister remain in office, if he could not fill all of the cabinet posts. Thus, the Army and Navy could prevent the formation of undesirable governments, or by resignation bring about the collapse of an existing government.


title: Surrender of Japan

text: Emperor Hirohito and Lord Keeper of the Privy Seal Kōichi Kido also were present at some meetings, following the Emperor's wishes. As Iris Chang reports, "... the Japanese deliberately destroyed, hid or falsified most of their secret wartime documents before General MacArthur arrived."


title: Surrender of Japan

text: For the most part, Suzuki's military-dominated cabinet favored continuing the war. For the Japanese, surrender was unthinkable—Japan had never been successfully invaded or lost a war in its history. Only Mitsumasa Yonai, the Navy minister, was known to desire an early end to the war. According to historian Richard B. Frank:


title: Surrender of Japan

text: After the war, Suzuki and others from his government and their apologists claimed they were secretly working towards peace, and could not publicly advocate it. They cite the Japanese concept of "haragei"—"the art of hidden and invisible technique"—to justify the dissonance between their public actions and alleged behind-the-scenes work. However, many historians reject this. Robert J. C. Butow wrote:


title: Surrender of Japan

text: Japanese leaders had always envisioned a negotiated settlement to the war. Their prewar planning expected a rapid expansion and consolidation, an eventual conflict with the United States, and finally a settlement in which they would be able to retain at least some new territory they had conquered. By 1945, Japan's leaders were in agreement that the war was going badly, but they disagreed over the best means to negotiate its end. There were two camps: the so-called "peace" camp favored a diplomatic initiative to persuade Joseph Stalin, the leader of the Soviet Union, to mediate a settlement between the Allies and Japan; and the hardliners who favored fighting one last "decisive" battle that would inflict so many casualties on the Allies that they would be willing to offer more lenient terms. Both approaches were based on Japan's experience in the Russo–Japanese War, forty years earlier, which consisted of a series of costly but largely indecisive battles, followed by the decisive naval Battle of Tsushima.


title: Surrender of Japan

text: In February 1945, Prince Fumimaro Konoe gave Emperor Hirohito a memorandum analyzing the situation, and told him that if the war continued, the imperial family might be in greater danger from an internal revolution than from defeat. According to the diary of Grand Chamberlain Hisanori Fujita, the Emperor, looking for a decisive battle (), replied that it was premature to seek peace "unless we make one more military gain". Also in February, Japan's treaty division wrote about Allied policies towards Japan regarding "unconditional surrender, occupation, disarmament, elimination of militarism, democratic reforms, punishment of war criminals, and the status of the emperor." Allied-imposed disarmament, Allied punishment of Japanese war criminals, and especially occupation and removal of the Emperor, were not acceptable to the Japanese leadership.


title: Surrender of Japan

text: On 5 April, the Soviet Union gave the required 12 months' notice that it would not renew the five-year Soviet–Japanese Neutrality Pact (which had been signed in 1941 following the Nomonhan Incident). Unknown to the Japanese, at the Tehran Conference in November–December 1943, it had been agreed that the Soviet Union would enter the war against Japan once Germany was defeated. At the Yalta Conference in February 1945, the United States had made substantial concessions to the Soviets to secure a promise that they would declare war on Japan within three months of the surrender of Germany. Although the five-year Neutrality Pact did not expire until 5 April 1946, the announcement caused the Japanese great concern, because Japan had amassed its forces in the South to repel the inevitable US attack, thus leaving its Northern islands vulnerable to Soviet invasion. Soviet Foreign Minister Vyacheslav Molotov, in Moscow, and Yakov Malik, Soviet ambassador in Tokyo, went to great lengths to assure the Japanese that "the period of the Pact's validity has not ended".


title: Surrender of Japan

text: At a series of high-level meetings in May, the Big Six first seriously discussed ending the war, but none of them on terms that would have been acceptable to the Allies. Because anyone openly supporting Japanese surrender risked assassination by zealous army officers, the meetings were closed to anyone except the Big Six, the Emperor, and the Privy Seal. No second or third-echelon officers could attend. At these meetings, despite the dispatches from Japanese ambassador Satō in Moscow, only Foreign Minister Tōgō realized that Roosevelt and Churchill might have already made concessions to Stalin to bring the Soviets into the war against Japan. Tōgō had been outspoken about ending the war quickly. As a result of these meetings, he was authorized to approach the Soviet Union, seeking to maintain its neutrality, or (despite the very remote probability) to form an alliance.


title: Surrender of Japan

text: In keeping with the custom of a new government declaring its purposes, following the May meetings the Army staff produced a document, "The Fundamental Policy to Be Followed Henceforth in the Conduct of the War," which stated that the Japanese people would fight to extinction rather than surrender. This policy was adopted by the Big Six on 6 June. (Tōgō opposed it, while the other five supported it.) Documents submitted by Suzuki at the same meeting suggested that, in the diplomatic overtures to the USSR, Japan adopt the following approach:


title: Surrender of Japan

text: On 9 June, the Emperor's confidant Marquis Kōichi Kido wrote a "Draft Plan for Controlling the Crisis Situation," warning that by the end of the year Japan's ability to wage modern war would be extinguished and the government would be unable to contain civil unrest. "... We cannot be sure we will not share the fate of Germany and be reduced to adverse circumstances under which we will not attain even our supreme object of safeguarding the Imperial Household and preserving the national polity." Kido proposed that the Emperor take action, by offering to end the war on "very generous terms." Kido proposed that Japan withdraw from the formerly European colonies it had occupied provided they were granted independence and also proposed that Japan recognize the independence of the Philippines, which Japan had already mostly lost control of and to which it was well known that the U.S. had long been planning to grant independence. Finally, Kido proposed that Japan disarm provided this not occur under Allied supervision and that Japan for a time be "content with minimum defense." Kido's proposal did not contemplate Allied occupation of Japan, prosecution of war criminals or substantial change in Japan's system of government, nor did Kido suggest that Japan might be willing to consider relinquishing territories acquired prior to 1937 including Formosa, Karafuto, Korea, the formerly German islands in the Pacific and even Manchukuo. With the Emperor's authorization, Kido approached several members of the Supreme Council, the "Big Six." Tōgō was very supportive. Suzuki and Admiral Mitsumasa Yonai, the Navy minister, were both cautiously supportive; each wondered what the other thought. General Korechika Anami, the Army minister, was ambivalent, insisting that diplomacy must wait until "after the United States has sustained heavy losses" in Operation Ketsugō.


title: Surrender of Japan

text: In June, the Emperor lost confidence in the chances of achieving a military victory. The Battle of Okinawa was lost, and he learned of the weakness of the Japanese army in China, of the Kwantung Army in Manchuria, of the navy, and of the army defending the Home Islands. The Emperor received a report by Prince Higashikuni from which he concluded that "it was not just the coast defense; the divisions reserved to engage in the decisive battle also did not have sufficient numbers of weapons." According to the Emperor:


title: Surrender of Japan

text: On 22 June, the Emperor summoned the Big Six to a meeting. Unusually, he spoke first: "I desire that concrete plans to end the war, unhampered by existing policy, be speedily studied and that efforts made to implement them." It was agreed to solicit Soviet aid in ending the war. Other neutral nations, such as Switzerland, Sweden, and the Vatican City, were known to be willing to play a role in making peace, but they were so small they were believed unable to do more than deliver the Allies' terms of surrender and Japan's acceptance or rejection. The Japanese hoped that the Soviet Union could be persuaded to act as an agent for Japan in negotiations with the United States and Britain.


title: Surrender of Japan

text: After several years of preliminary research, President Franklin D. Roosevelt had authorized the initiation of a massive, top-secret project to build atomic bombs in 1942. The Manhattan Project, under the authority of Major General Leslie R. Groves Jr. employed hundreds of thousands of American workers at dozens of secret facilities across the United States, and on 16 July 1945, the first prototype weapon was detonated during the Trinity nuclear test.


title: Surrender of Japan

text: As the project neared its conclusion, American planners began to consider the use of the bomb. In keeping with the Allies' overall strategy of securing final victory in Europe first, it had initially been assumed that the first atomic weapons would be allocated for use against Germany. However, by this time it was increasingly obvious that Germany would be defeated before any bombs would be ready for use. Groves formed a committee that met in April and May 1945 to draw up a list of targets. One of the primary criteria was that the target cities must not have been damaged by conventional bombing. This would allow for an accurate assessment of the damage done by the atomic bomb. The targeting committee's list included 18 Japanese cities. At the top of the list were Kyoto, Hiroshima, Yokohama, Kokura, and Niigata. Ultimately, Kyoto was removed from the list at the insistence of Secretary of War Henry L. Stimson, who had visited the city on his honeymoon and knew of its cultural and historical significance.


title: Surrender of Japan

text: Although the previous Vice President, Henry A. Wallace, had been involved in the Manhattan Project since the beginning, his successor, Harry S. Truman, was not briefed on the project by Stimson until 23 April 1945, eleven days after he became president on Roosevelt's death on 12 April 1945. On 2 May 1945, Truman approved the formation of the Interim Committee, an advisory group that would report on the atomic bomb. It consisted of Stimson, James F. Byrnes, George L. Harrison, Vannevar Bush, James Bryant Conant, Karl Taylor Compton, William L. Clayton, and Ralph Austin Bard, advised by a Scientific Panel composed of Robert Oppenheimer, Enrico Fermi, Ernest Lawrence, and Arthur Compton. In a 1 June report, the Committee concluded that the bomb should be used as soon as possible against a war plant surrounded by workers' homes and that no warning or demonstration should be given.


title: Surrender of Japan

text: The committee's mandate did not include the use of the bomb—its use upon completion was presumed. Following a protest by scientists involved in the project, in the form of the Franck Report, the Committee re-examined the use of the bomb, posing the question to the Scientific Panel of whether a "demonstration" of the bomb should be used before actual battlefield deployment. In a 21 June meeting, the Scientific Panel affirmed that there was no alternative.


title: Surrender of Japan

text: Truman played very little role in these discussions. At Potsdam, he was enthralled by the successful report of the Trinity test, and those around him noticed a positive change in his attitude, believing the bomb gave him leverage with both Japan and the Soviet Union. Other than backing Stimson's play to remove Kyoto from the target list (as the military continued to push for it as a target), he was otherwise not involved in any decision-making regarding the bomb, contrary to later retellings of the story (including Truman's own embellishments).


title: Surrender of Japan

text: On 18 June 1945, Truman met with the Chief of Army Staff General George Marshall, Air Force General Henry Arnold, Chief of Staff Admiral William Leahy and Admiral Ernest King, Navy Secretary James Forrestal, Secretary for War Henry Stimson and Assistant Secretary for War John McCloy to discuss Operation Olympic, part of a plan to invade the Japanese home islands. General Marshall supported the entry of the Red Army, believing that doing so would cause Japan to capitulate. McCloy had told Stimson that there were no more Japanese cities to be bombed and wanted to explore other options of bringing about a surrender. He suggested a political solution and asked about warning the Japanese of the atomic bomb. James Byrnes, who would become the new Secretary of State on 3 July, wanted to use it as quickly as possible without warning and without letting the Soviets know beforehand.