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A transverse engine is an engine mounted in a vehicle so that the engine's crankshaft axis is perpendicular to the direction of travel. In a longitudinal engine configuration, the engine's crankshaft axis is parallel with the direction of travel. However, the description of the orientation of "V" and "flat" motorcycle engines differs from this ...
The first bike manufactured by Yamaha was actually a copy of the German DKW RT 125; it had an air-cooled, two-stroke, single cylinder 125 cc engine [1] YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. [1] YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1. [1]
The Yamaha XV1000 or Virago 1000 was a Yamaha V-twin cruiser motorcycle. The XV920 was redesigned in 1984 and engine size increased to 981 cc (59.9 cu in) resulting in the renamed XV1000 . Made from 1984 through 1985, it was part of Yamaha's Virago line of cruisers.
"Cutaway of Yamaha Genesis inline-four 20-valve engine" The DOHC Genesis engine has five valves per cylinder and downdraft carburetors. Yamaha adopted the 5-valve concept, using three intake valves and two exhaust valves per cylinder, because it allowed both excellent volumetric efficiency and high RPM. As designers began to appreciate the ...
The Yamaha XV1000 SE or Midnight Special is a special edition Yamaha V-twin cruiser motorcycle. The XV920 was made from 1983 to 1985 and was based on Yamaha's Virago line of V-twin cruisers that are part of Yamaha's XV generation first launched in 1981. [ 2 ]
The Yamaha XV1900A cruiser was developed to exploit the large displacement end of the market for large cruisers.Yamaha had a well established range of big "Star" cruisers which went up to the Wild Star 1600 cc but there was a need to redesign the engine to meet anticipated exhaust emissions regulations and the opportunity to update the styling, which had remained largely unchanged for a decade.
The machines participating in Grand Prix motorcycle racing, since its origin in 1949, have been entered into distinct classes depending primarily on engine capacity. The smallest engines and two-stroke engines have been phased out over the years.
Yamaha claimed this was the world's first mass-produced four-valve motorcycle engine. [3] The TX500 was also claimed to be the first motorcycle to use an integrated circuit-based voltage regulator. [8] The air/fuel mixture was delivered by two 32 mm Keihin constant-velocity (CV) carburetors in early models and by 38 mm Mikunis beginning in 1976.