Kingda Ka
Kingda Ka is a launched roller coaster located at Six Flags Great Adventure in Jackson, New Jersey, United States. Designed by Werner Stengel, Kingda Ka is an Accelerator Coaster model from Intamin that opened as the tallest and fastest roller coaster in the world on May 21, 2005. It is also the second-ever strata coaster, a full-circuit roller coaster taller than ; Top Thrill Dragster was the first and previously held both records. The train is launched by a hydraulic launch mechanism, accelerating to in 3.5 seconds. The train climbs the main top hat tower element at  the end of the launch track, reaching a height of , before dropping and completing the course in 28 seconds. While still the tallest, Kingda Ka's speed record was broken by Formula Rossa at Ferrari World in 2010, however it remains the fastest coaster in North America. History. On September 29, 2004, it was announced that Kingda Ka would be added to Six Flags Great Adventure in 2005. This announcement occurred at an event held for roller coaster enthusiasts and the media. The event revealed the park's goal to build "the tallest and fastest roller coaster on earth", reaching  and accelerating up to in 3.5 seconds. Intamin subcontracted Stakotra to assist with construction. On January 13, 2005, Kingda Ka's tower construction was completed. While the attraction was originally scheduled to open on April 23, 2005, its opening was delayed to May 21. The park stated that more time was needed to complete testing. A media event was held two days prior on May 19, 2005. Kingda Ka became the "tallest" and "fastest" roller coaster in the world, taking both world records from Top Thrill Dragster at Cedar Point. It lost the title of world's fastest when Formula  Rossa at Ferrari World opened in November 2010. Intamin designed both Kingda Ka and Top Thrill Dragster, and the two share a similar design and layout that differs primarily by the theme and the additional hill featured on Kingda Ka. Both rides were built by Stakotra and installed by Martin & Vleminckx. On August 29, 2013, Six Flags Great Adventure officially announced for the 2014 season. The new attraction was attached to the Kingda Ka coaster. The drop tower features three gondolas integrated into the existing structure which was also built by Intamin. Kingda Ka closed at the start of the  2014 season in order to construct Zumanjaro: Drop of Doom on to Kingda Ka. Kingda Ka reopened on weekends on Memorial Day Weekend and fully reopened when Zumanjaro: Drop of Doom was completed on July 4, 2014. Ride experience. Queue. Guests pass under the jungle-themed entrance sign and enter the queue line, which is surrounded by bamboo, which augments the jungle-themed music that plays in the background. Along the way, there are some safety and warning signs about the ride. Following a long straight section, guests turn left and head into a switchback section. Guests approach some curved  paths before entering the station. Layout. Kingda Ka's layout and experience is nearly identical to that of Top Thrill Dragster. After the train has been locked and checked, it moves slowly out of the station to the launch area, then passes through a switch track which allows four trains on two tracks to load simultaneously. When the signal is given to launch, the train rolls back slightly so that the catch car can latch on to the middle car, and the brakes retract on the launch track. As the brake fins are retracting, a recording announces: "Arms down, head  back, hold on!" The train is launched approximately five seconds later. When the train is in position, the hydraulic launch mechanism accelerates it from in 3.5 seconds. The hydraulic launch motor is capable of producing 20,800 peak horsepower (15.5 MW). At the end of the launch track, the train climbs the main tower (top hat) and rolls 90 degrees to the right before reaching a height of . It then descends straight down through a 270-degree, clockwise spiral. It climbs the second hill of , producing a moment of weightlessness before being smoothly brought to a stop by the magnetic brakes ; it then makes a left-hand U-turn and enters the station. The ride lasts 28 seconds from the start of the launch. Trains and station. Kingda Ka's four trains are color-coded for easy identification (green, dark blue, teal, and orange) and are numbered; the four colors are also used for the seats and restraints. Each train seats 18 people (two per row). The rear car has one row, while the rest have two. The rear row of each car is positioned higher than its front row for better visibility. Each of Kingda Ka's trains has an  extra row of seat mounts. The panels could be removed for the installation of additional seats in the future. This modification would increase the capacity of each train from 18 to 20, and the hourly capacity of the coaster from 1400 to 1600 riders per hour. Kingda Ka's station is prepared for this modification, with entrance gates for the currently-nonexistent row of seats. Kingda Ka's over-the-shoulder restraint system consists of a thick, rigid lap bar and two thinner, flexible over-the-shoulder restraints. Because the over-the-shoulder portions of the restraint are not rigid , the hand grips are mounted to the lap bar. Kingda Ka's restraints are also held down by a belt, in case the main locking system fails. To speed loading, riders are asked to secure their own restraints if possible. These are checked by the attendant before launch. Kingda Ka's station has two parallel tracks, with switch tracks at the entrance and exit. Each of the station's tracks is designed to accommodate two trains, so each of the four trains can be operated from its own station. Because all of Kingda Ka's trains are mechanically identical and  able to load and unload at each of the four individual station bays, the original plan was for all trains to operate at the same time, and for each train to load and unload at its own station. Trains on one side would be loaded while trains on the other side would be launched with an employee directing riders in line to a particular side, where they could then choose to sit anywhere within the train. During recent seasons, however, it has become common for only one train bay (the forward one on the side opposite the parking lot) to  be used for the loading, unloading, and dispatching of trains, while other trains wait either in the station (behind a loading/unloading train) or outside (on the brake run that follows the second hill). Two operators load, check and dispatch each train; another launches the trains. Kingda Ka's music is by Safri Duo; almost their entire Episode II album is played in the queue and station. Survivor's "Eye of the Tiger", played by DJ Quicksilver, may also be heard in the queue and station. Theme. Kingda Ka is located in the jungle-themed area of the park known  as The Golden Kingdom. The ride portrays a mythical Bengal tiger named after one that was housed in the nearby Temple of the Tiger attraction, an interactive exhibit that was closed in 2010. Rollbacks. A train may occasionally experience a rollback following a launch. A rollback occurs when the train fails to make it over the top of the tower and descends back down the side it was launched. Kingda Ka includes retractable magnetic brakes on its launch track to prevent a train from rolling back all the way into the loading station (and potentially colliding with the next about -to-be-launched train). Incidents. On June 8, 2005, a bolt failed inside a trough through which the launch cable travels. This caused the liner to come loose, creating friction on the cable and preventing the train from accelerating to the correct speed. The cable rubbing against the trough caused sparks and shards of metal to fly out from the bottom of the train. The ride was closed for almost two months following the incident. Damage occurred to the launch cable, which was frayed and required replacement, including minor damage to seals and brake fins. The incident caused stress on  a number of fins, and Six Flags did not have enough replacement fins. Extra brake fins had to be ordered from Intamin in Switzerland, and the ride had to undergo thorough testing following the repair. Kingda Ka reopened on August 4. Kingda Ka was struck by lightning in May 2009 and suffered serious damage. The ride was closed for three months for repairs and reopened on August 21, 2009. On August 27, 2011, Kingda Ka suffered unspecified damage shortly before Hurricane Irene, and Six Flags Great Adventure did not open. It is unknown whether additional damage occurred due to the  storm, but the coaster was damaged to the extent that it could not run before Irene. Kingda Ka remained closed until the start of the 2012 operating season on April 5. Shortly before 5:00p.m. on July 26, 2012, a young boy was sent to the hospital after suffering minor injuries from being struck by a bird during normal operation. The ride resumed normal operation shortly after the incident.