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  2. Straight-twin engine - Wikipedia

    en.wikipedia.org/wiki/Straight-twin_engine

    1997 Suzuki GS500 motorcycle engine. A straight-twin engine, also known as an inline-twin, vertical-twin, or parallel-twin, is a two-cylinder piston engine whose cylinders are arranged in a line along a common crankshaft. Straight-twin engines are primarily used in motorcycles; other uses include automobiles, marine vessels, snowmobiles, jet ...

  3. Yamaha RD500LC - Wikipedia

    en.wikipedia.org/wiki/Yamaha_RD500LC

    Yamaha YZR500. The RD500LC (Race Developed 500CC Liquid Cooled motorcycle) uses a 50-degree, twin- crankshaft V4 engine layout. Linked Yamaha YPVS exhaust power valves are controlled by a single electronic unit and servo motor and are designed to give a broader power band. The engine also features intake reed valves unlike the YZR500 racer ...

  4. Yamaha SuperJet - Wikipedia

    en.wikipedia.org/wiki/Yamaha_SuperJet

    Yamaha numbers its models according to their make (in the case of the SuperJet, all models begin with the letters SJ) followed by the engine size (given in approximate cubic centimeters— the 650cc referred to as 650 and the 701cc referred to as 700) and the year in which the vehicle was made, given as either a one or two letter designation and increasing by one ‘letter' each full year ...

  5. Yamaha Zuma - Wikipedia

    en.wikipedia.org/wiki/Yamaha_Zuma

    The Yamaha Zuma is an air-cooled 49 cc two-stroke scooter made by Yamaha Motor Company.It is also marketed as the Yamaha BWs, [2] and the MBK Booster.. The Zuma has a 14 mm Teikei carburetor with automatic choke, reed-valve induction, a fan-assisted cooling system, an autolube oil-injection system with an indicator light located on instrument panel which alerts rider when oil level gets low ...

  6. Yamaha RD400 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_RD400

    The RD400 is a 399 cc (24.3 cu in) two-stroke air cooled six-speed motorcycle produced by Yamaha from 1976 until 1979. It evolved directly from the Yamaha RD350. The 350 evolved into the RD400C in 1976, the "D", "E" in '77, '78 respectively and the final model, the white 1979 RD400F. (The model year for the first RD400 which was sold in the U.S ...

  7. Yamaha YZR500 - Wikipedia

    en.wikipedia.org/wiki/Yamaha_YZR500

    Bore / stroke. 54 mm × 54 mm (2.1 in × 2.1 in) 56 mm × 50.6 mm (2.20 in × 1.99 in) Power. OW23: 66.2 kW (88.8 hp) @ 10,500 rpm. Related. Yamaha TZ750. The Yamaha YZR500 was a 500 cc Grand Prix racing motorcycle made by Yamaha from 1973 through 2002. It achieved significant acclaim, especially during the 1980s and 1990s.

  8. Outboard motor - Wikipedia

    en.wikipedia.org/wiki/Outboard_motor

    Outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft. As well as providing propulsion, outboards provide ...

  9. Two-stroke power valve system - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_power_valve_system

    Kawasaki KIPS. Kawasaki uses a power-valve system called KIPS (Kawasaki Integrated Power Valve System) on their two-stroke bikes. The KIPS utilizes both alterations in port height, closing of the secondary port ducting, and a resonant chamber. KIPS is operated by a mechanical governor on single cylinder machines.