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  2. Semi-automatic transmission - Wikipedia

    en.wikipedia.org/wiki/Semi-automatic_transmission

    Semi-automatic transmissions were almost exclusively used in motorcycles and are based on conventional manual transmissions or sequential manual transmissions, but use an automatic clutch system. But some semi-automatic transmissions have also been based on standard hydraulic automatic transmissions with torque converters and planetary gearsets ...

  3. Motorcycle transmission - Wikipedia

    en.wikipedia.org/wiki/Motorcycle_transmission

    They are much less common than motorcycles with conventional manual transmissions, typically use a centrifugal clutch, and are mostly found on smaller motorcycles, such as minibikes, underbone (step-thru) motorcycles (e.g., the Honda Super Cub), smaller dirt bikes (such as pit bikes), and various (mostly older) mopeds and motor scooters. Semi ...

  4. Scooter (motorcycle) - Wikipedia

    en.wikipedia.org/wiki/Scooter_(motorcycle)

    The term scooty has become the generic term for scooter in India [1]. A scooter (motor scooter) is a motorcycle with an underbone or step-through frame, a seat, a transmission that shifts without the operator having to operate a clutch lever, a platform for their feet, and with a method of operation that emphasizes comfort and fuel economy.

  5. Clutch - Wikipedia

    en.wikipedia.org/wiki/Clutch

    A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. [1] The clutch's input shaft is typically attached to a motor, while the clutch's output shaft is connected to the mechanism that does the work. In a motor vehicle, the clutch acts as a mechanical linkage between the engine and ...

  6. Continuously variable transmission - Wikipedia

    en.wikipedia.org/wiki/Continuously_variable...

    Some motor scooters include a centrifugal clutch, to assist when idling or manually reversing the scooter. [48] The 1974 Rokon RT340 TCR Automatic off-road motorcycle was fitted with a snowmobile CVT. The first ATV equipped with a CVT was the Polaris Trail Boss in 1985. [citation needed]

  7. Clutch control - Wikipedia

    en.wikipedia.org/wiki/Clutch_control

    Clutch control is the controlling of the speed of a manual transmission vehicle by partially engaging the clutch plate, using the clutch pedal instead of (or in conjunction with) the accelerator pedal. The purpose of a clutch is in part to allow such control; in particular, a clutch provides transfer of torque between shafts spinning at ...

  8. Underbone - Wikipedia

    en.wikipedia.org/wiki/Underbone

    Depending on whether the motorcycle has a manual hand clutch or an automatic centrifugal clutch, determines whether the motorcycle transmission is a semi-automatic (automatic clutch) or a manual transmission. It is then coupled to a sprocket and chain drive to transmit power to the rear wheel.

  9. Motorcycle engine - Wikipedia

    en.wikipedia.org/wiki/Motorcycle_engine

    A Honda Super Cub engine. The most popular motorcycle in history, with over 100 million produced. A motorcycle engine is an engine that powers a motorcycle.Motorcycle engines are typically two-stroke or four-stroke internal combustion engines, but other engine types, such as Wankels and electric motors, have been used.