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  2. Freewheel - Wikipedia

    en.wikipedia.org/wiki/Freewheel

    A freewheel was also used in the original Land Rover vehicle from 1948 to 1951. The freewheel controlled drive from the gearbox to the front axle, which disengaged on the overrun. This allowed the vehicle to have a permanent 4 wheel drive system by avoiding 'wind-up' forces in the transmission. This system worked, but produced unpredictable ...

  3. Locking hubs - Wikipedia

    en.wikipedia.org/wiki/Locking_hubs

    The hub is a component where the wheel is directly mounted to, and is outside the axle. The benefits of unlocking hubs for normal road use are mainly found in increased fuel efficiency . When the front hubs are locked, even if no power is sent to the front axle (by means of a transfer case ), the turning of the wheels will still spin the front ...

  4. Front freewheel - Wikipedia

    en.wikipedia.org/wiki/Front_freewheel

    The Shimano Front Freewheel (FFS) was a proprietary bicycle drivetrain design of the 1970s that placed a freewheel between the pedal cranks and the front chainrings – enabling the rider to shift gears while coasting. [2] FFS rear freewheel is different than a standard freewheel because it's "stiff" with more friction than a normal rear freewheel.

  5. Flip-flop hub - Wikipedia

    en.wikipedia.org/wiki/Flip-flop_hub

    There are a few different variations of flip-flop hubs for BMX bikes that are different from the track style. The most common type of BMX flip flop hub has standard ISO freewheel threads on one side and smaller metric BMX threads (30 mm x 1 mm) on the other side that are designed to work with smaller 14T to 15T BMX freewheels.

  6. Cogset - Wikipedia

    en.wikipedia.org/wiki/Cogset

    A freewheel and freewheel hub A freehub (above) for use with a cassette and a threaded hub (below) for use with a freewheel. A freewheel (also known as a block) consists of either a single sprocket or a set of sprockets mounted on a body which contains an internal ratcheting mechanism and mounts on a threaded hub. Threaded rear hubs were ...

  7. Sprag clutch - Wikipedia

    en.wikipedia.org/wiki/Sprag_clutch

    A sprag clutch is a one-way freewheel clutch. It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags, or other elements allowing single direction rotation, are used. When the unit rotates in one direction the rollers slip or free-wheel, but when a torque is applied in the opposite ...

  8. Freehub - Wikipedia

    en.wikipedia.org/wiki/Freehub

    Freehub vs freewheel hub. The freehub concept answers several drawbacks encountered with the freewheel design: Freewheels are threaded onto an axle hub, using conventional right-hand threads. As the bicycle rider pedals, the freewheel is continuously kept tight, as chain torque is in the right-hand direction. This becomes a problem when the ...

  9. Freewheel (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Freewheel_(disambiguation)

    A freewheel is a device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates faster than the driveshaft. Freewheel or freewheeling may also refer to: Freewheel (bicycle part)

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