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  2. Yamaha TZR250 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_TZR250

    Parallel-twin, reverse cylinder and finally 90° V-twin variants were produced. It evolved as a natural replacement for the popular RD 250/Yamaha RD350LC series of the 1980s. It has the Yamaha Power Valve System 'YPVS' which raises and lowers the exhaust port depending on the rpm of the engine. The YPVS servo motor starts to open at about 6,000rpm.

  3. V-twin engine - Wikipedia

    en.wikipedia.org/wiki/V-twin_engine

    Honda Shadow VT 125 motorcycle engine. A V-twin engine, also called a V2 engine, is a two-cylinder piston engine where the cylinders are arranged in a V configuration and share a common crankshaft. The V-twin is widely associated with motorcycles, primarily installed longitudinally, though also transversely. They are also used in a variety of ...

  4. List of motorcycles by type of engine - Wikipedia

    en.wikipedia.org/wiki/List_of_motorcycles_by...

    Motorcycles with a V-twin engine mounted with its crankshaft mounted in line with the frame, e.g. the Honda CX series, are said to have "transverse" engines, [1] [2] while motorcycles with a V-twin mounted with its crankshaft mounted perpendicular to the frame, e.g. most Harley-Davidsons, are said to have "longitudinal" engines.

  5. List of Yamaha motorcycles - Wikipedia

    en.wikipedia.org/wiki/List_of_Yamaha_motorcycles

    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]

  6. Yamaha XV250 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_XV250

    Engine Type 249cc, air-cooled, SOHC, 60-degree V-twin Horse power Bore x Stroke 49mm x 66mm Compression Ratio 10:1 Carburetion 26mm Mikuni Ignition Digital TCI Transmission 5-speed Final Drive Chain Chassis Suspension/Front 33mm telescopic fork; 5.5" travel Suspension/Rear Twin shocks w/adjustable spring preload; 3.9" travel Brakes/Front

  7. Yamaha DS7 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_DS7

    A 250cc air-cooled twin two-stroke design includes a 12v battery ignition and a five-speed transmission. Making nearly 30 hp (22 kW) @ 7,500 r/min, the published top speed was 93 mph, with a 1/4 14.8 second quarter mile time. The DS7 is the forerunner of the Yamaha RD motorcycle series started in 1973.

  8. Yamaha TZ 250 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_TZ_250

    The Yamaha TZ 250 was a commercially available racing motorcycle with a watercooled, two-stroke, 250 cc engine produced by the Japanese manufacturer Yamaha. The basis of the production-volume racer was the OW17 factory machine from Yamaha, which was used in the motorcycle world championship from 1973 to 1990, and with which Dieter Braun became ...

  9. List of Grand Prix motorcycles - Wikipedia

    en.wikipedia.org/wiki/List_of_Grand_Prix_motorcycles

    The smallest engines and two-stroke engines have been phased out over the years. ... Yamaha 250 Twin; Yamaha 250 V4; Yamaha TZ 250; Yamaha TZR250; Yamaha YZR250 ...

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