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The Yamaha RD250 is a 250 cc (15 cu in) two-stroke motorcycle produced by Yamaha Motor Corporation between 1973 and 1987.. Four generations of RD (also known as the RZ250 in the Japanese and Australian markets) were produced: the air-cooled models from 1973 up to 1979, and from 1980 until 1987 the liquid cooled models; known as the RD250LC, RD250LC-II and RD250 YPVS.
The DS7 is the forerunner of the Yamaha RD motorcycle series started in 1973. The major difference between the DS7 / R5350 and 1973 RD250 / 350 is the induction design. The DS7 and R5 are piston-ported, whereas the RDs used reed valve induction. Two Mikuni VM26 round slide carburetors serve the air-fuel charge.
Yamaha R5 (1972) The Yamaha R5 is a motorcycle made by Yamaha for production years 1970 (R5), 1971 (R5B) and 1972 (R5C). [when?] It was the first iteration of a new generation of horizontally split crankcase two strokes that also included the RD350 and culminated in the RD400. The engine platform also included the 250cc variants (DS7/RD250 ...
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]
Yamaha subsequently advertised that its 650 was quicker than nine out of ten superbikes. The 1972 race ended in controversy with Joe Eastmure initially being declared winner on a 315 cc Suzuki 350 . Two hours later Kawasaki 750 riders Mike Steele and Dave Burgess, who had crashed four minutes before the finish, were declared winners.
A Suzuki GSX-R1000 at a drag strip – a 2006 model once recorded a 0 to 60 mph time of 2.35 seconds. This is a list of street legal production motorcycles ranked by acceleration from a standing start, limited to 0 to 60 mph times of under 3.5 seconds, and 1 ⁄ 4-mile times of under 12 seconds.
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Yamaha: 10 — 5 7 5 46 0 1969 Australia: Kel Carruthers: Benelli: 12 — 3 7 3 89 5 1970 United Kingdom: Rodney Gould: Yamaha: 12 — 6 9 3 102 18 1971 United Kingdom: Phil Read: Yamaha: 12 — 3 5 3 73 5 1972 Finland: Jarno Saarinen: Yamaha: 13 — 4 9 6 94 1 1973 West Germany: Dieter Braun: Yamaha: 11 — 4 5 2 80 16 1974 Italy: Walter Villa ...