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A stroke is the action of a piston travelling the full length of its cylinder.In a two-stroke engine, one of the two strokes combines primarily the intake stroke and the combustion stroke, while the other stroke primarily combines the compression stroke and the exhaust stroke, though technically since both ports are exposed during both the combustion and compression strokes, some reversion ...
Robin (a subsidiary of Subaru Corporation) previously developed and supplied all-terrain vehicle (ATV) and snowmobile engines for Polaris Inc. Starting in 1995 with the Polaris Magnum 425 4-stroke ATV and in 1997, with the introduction of the "twin 700" snowmobile engine Polaris started the development and production in house of the "Liberty ...
The Suzuki LT250R was a sport/racing ATV manufactured between 1985 and 1992. [1] It combined a lightweight fully suspended frame with a 249cc liquid cooled two stroke engine. Nicknamed by Suzuki as the QuadRacer, it revolutionized the (ATV industry). [2] Before this model was released, the ATV racing world was dominated by three-wheelers.
Honda upgraded the two-stroke engine to 342 cc (20.9 cu in) which was later decreased to 329 cc (20.1 cu in) in a recall. [3] The engine was mounted behind the driver, [ 2 ] and featured 6.7:1 compression , capacitor discharge ignition a 32 mm (1.26 in)-throat Keihin carburetor , and added electric starting. [ 2 ]
The original YZ250 of 1974 used an air-cooled 250cc two-stroke engine of 70 mm bore and a 64 mm stroke, which was improved semi-annually. The air-cooled motor was replaced in 1982 with a 249 cc liquid-cooled two-stroke reed-valved engine with a mechanical, rather than servo-driven, YPVS exhaust valve for a wider spread of power.
A carburetor (also spelled carburettor or carburetter) [1] [2] [3] is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. [4] The primary method of adding fuel to the intake air is through the Venturi effect or Bernoulli's principle in the main metering circuit, though various other ...
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It combined a lightweight frame and good handling with a liquid-cooled two-stroke engine and six-speed close-ratio transmission. Although only being manufactured for four years, the "250R", as it was known, was long a primary choice for ATV racers until the resurgence of factory involvement and usage of four-stroke engines in sport ATV's ...
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