The Bridgeport evening farmer., 1915-09-24
Automobile News
The Twin Six.

motor came Into existence.
 MT, Vincent, who is vice-president of engineering Of the Packard Motor Car Company, ga1d in partE ~
 r.It is easy te see that the force of an exelesloA must be in proportion te the volume Of gas exploded, so that the p4neh given to the piston and the corresponding recol kick on the cylinder 4s greater as we make the cSdan5eG larger. With a six-cylinder motor running slowly as when putt ing slowly through traffic oH high gear, 1s is possible to feel each kick. each effort. as the charge is fired in one cylinder after another, A four cylinder will not run so slowly be ca@se there is a pause between each expsosson, but i4a a six, the explosions overlap a little. Still, when the ac- ceaaz,ator pedal is depressed the push. push, push of each successive explo- ] sion can be felt by every occupant of the car
 .-As che speed rises, this sense of effort disappears as the explosions follow faster on each others but in most sasces we reach point where
 there arises distinct vibration This comes from 9 different causes name lt, tha weight of the pistons, and is more difficult to overcome as we make the engine larger
 1Ir. Vincent pointed out why six cylinder engine is perfectly balanced He also showed how increased srnoothness of action is obtained
 through reducing piston weight and making smaller explosions? From his analysis it appeared that the twelve cylinder engine was the logical de- sign to give increased smoothness { combined with greater ability
 Don't Buy Cheap Oil. E Buying a cheap grade of oil be .1,f .1exv Is mo firm econoxa but will eventually prove
 tc be n very expensive practice states A G. Seiberling. of Kokomo,
 Ind1anaA
 s-The principal 1abricating mediums
 commonly used are fluid oil and semi 91uid oils and greases derived from both mineral and animal sources s9Graph1te, one Of the most important Lubricants known is a form of crys- taIalne carbon The mediums best adapted differ with the nature of the < work the parts are to perform An oil that is suitable for one portion of the autou1obAe mechanism may prove actually Injurious to other parts : By adding about one teaspoonful | of ground flake graphite to every gallon of cylinder oil. 1t Is possible to carry to aH surfaces materialstha 1s finer than the AAuaost minute pores Of the metal and which will gradual 1y cover the metal Nith-a film which heat cannot easily destroy The bene- fits derived from the use of graphite in oil are accuIn111atiye, for with con- t1n1ed use all the bearings, cylinder walls and piston rings are protected by a lubricant which hnpregnates the
 metal All graphite is not 1ubricat-
 ing graphite however nor is all 1ubri-
 eating graP3aite suitable for use in cylinder oil Care must be exercised
 and only finely ground flake graphite
 of the best quality should be used
 Cylinder oil should be derived from a crude petroleum base, be
 cause oils of this nature are inorganic i and are moi liable to decompose by exposure to the air or by heat are { the organic lubricants derived from animal fats or vegetable sources
 s4The best cylinder oils are obtain ed in three gradess light, which has a consistency slightly greater than Imachine oil; medium, which is some what heavier than the light, and is an Intermediate grade between that and the heavy bodied oil which has the consistency of warm nolasses- use in summer. and the light grade ]
 sn winter g
 Weight and Horse Power. 'sEmcfency and refinement are the 1.-Two ,words that best describe the evo- 11tion of the motor car.,' declares R. EC- Hoffman,
 i : .sThe fundamentals of the as1tomo- bile engine have remained practical 1y unchanged since the four cycle mo- tor was generally adopted Aside from appearance, the most noticeable
 difference between the old type car and the automobile of today is that kthe latter is light in weight and more d powerful .desplteS the fact that much tsna1ier motors are being used Al --.-x keuTaey and precision with a resulting Ien1clenoy. The earlier racing car possessed power because of the excess Isive size of the motor but such a car Twas oorresponding1y heavy and con- Esequent1y would not compare in per h8crmance with the present day rae S4ng car equipped with the high speed,
 small bore motor"
 { HEzoEsepower in itself means very
 zztt5e. It's the ratio of horsepower to kWeigIt that really counts.''
 iGaso91ne and Tires scandfnavian | Scarcity.
 The scarcity of gasoline and tires is greatly curta11fng the use Of auto t1uob4leS in the Scandinavian Penin- bsu1a, States Steward Mcdonald. Own
 CTS are endeavoFing 70 ind a substi- tute fuel, but are having difficulty in IsecuEang suitable one. The siIua-
 ton is becoming worse daily, because
 of the Inability to get ffres as we'll ACne of the largest rubber companies fin Stockholm are renting tires by the day to automobile owners.
 'TIS true the American nanufac- turer fB having hard time securing tsae high carbon steel which is of a Leaa5ected variety, which contains large percentage of tungsten and 1Iaaanganese. These ingredients being lformerIy imported, the present Euro kFaAAFa f0f f.-f lad Jof supplies which in turn has brought
 on the present condition of scarcity
 in high carbon steel.
 Controls Speed Rate,