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The SR was styled by Atsushi Ishiyama with Yamaha presenting a pre-production prototype to US dealers in late 1975. [5] Ishiyama said of the bike's styling: "Our choice was to design the new SR500 with a strong family image and a strong link to our first four stroke, the XS 650 twin, which was also inspired by British design." [5]
Yamaha entered the ATC market in 1980, after paying patent-right to Honda to produce their own version of the All Terrain Cycle. Starting modestly with a 125cc recreational ATC that would remain the foundation of their line through 1985, the YT125 featured a 2 stoke engine with sealed airbox with snorkel intake, an autolube oil injection system, and featured a narrow tunnel above the engine ...
The Yamaha Blaster is a compact all-terrain vehicle produced as an entry-level machine manufactured in Japan and sold in the United States from 1988 to 2006. Because of the Blaster's initial low price tag, it sold in large numbers for many years from its inception in 1988 all the way to present day.
The Yamaha XT225, or known in some markets as the Yamaha Serow (from the Japanese serow), was a dual-sport motorcycle produced by Yamaha from 1986 to 2007. The XT225 was preceded and superseded by the XT250. Power is supplied by a 223cc single-cylinder, air-cooled four-stroke engine featuring a SOHC and 2 valves. [1]
"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 YZ450F is a four-stroke racing motocross bike built by Yamaha Motor Corporation.It was the successor to the previous YZ426F which was discontinued in 2003. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution.
Yamaha Chip Controlled Throttle (YCC-T) is also a new addition. The throttle cables are connected to a throttle position sensor and a new computer called G.E.N.I.C.H. that operates the butterfly valves, the EXUP valve in the exhaust and the other components involved, such as the igniter unit, and the YCC-I lifter unit.
In 1967 a new larger displacement model was added to the range, the 350cc two stroke twin R-1. In 1968, Yamaha launched their first four-stroke motorcycle, the XS-1/650 which was a 650cc four-stroke twin, a larger and more powerful machine that equaled the displacement and performance of the popular British bikes of the era, such as the Triumph ...