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  2. Bicycle gearing - Wikipedia

    en.wikipedia.org/wiki/Bicycle_gearing

    A bicycle gearbox with chain tensioner. Bicycle gearing is the aspect of a bicycle drivetrain that determines the relation between the cadence, the rate at which the rider pedals, and the rate at which the drive wheel turns. On some bicycles there is only one gear and, therefore, the gear ratio is fixed, but most modern bicycles have multiple ...

  3. Bicycle chain - Wikipedia

    en.wikipedia.org/wiki/Bicycle_chain

    Fixed sprockets and freewheels are also available in 3 ⁄ 32 in (2.4 mm) widths, so fixed-gear and single-speed bikes can be set up to use the narrower and lighter 3 ⁄ 32 in (2.4 mm) chains.) 1 ⁄ 8 in (3.2 mm) chains are typically used on bikes with a single rear sprocket: those with coaster brakes , hub gears , fixed gears such as track ...

  4. Derailleur - Wikipedia

    en.wikipedia.org/wiki/Derailleur

    Campagnolo Super Record rear derailleur (1983) Shimano XT rear derailleur on a mountain bike Pulley wheels for a rear derailleur The rear derailleur has two functions: it moves the chain between rear sprockets while taking up chain slack caused by moving to a smaller sprocket at the rear or a smaller chainring by the front derailleur.

  5. Crankset - Wikipedia

    en.wikipedia.org/wiki/Crankset

    A high gear of 50×11 on a compact drivechain is actually slightly higher than the 53×12 of a standard set. Compact gearing usually has a large percentage jump between the two chainrings. In balance, it may also allow small jumps in the rear by allowing a closer ratio cassette to be used, except for the 9% jump at the high end between the 11 ...

  6. Sprocket - Wikipedia

    en.wikipedia.org/wiki/Sprocket

    A sprocket, [1] sprocket-wheel[2] or chainwheel is a profiled wheel with teeth that mesh with a chain, rack or other perforated or indented material. [3][4] The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain passing over it. It is distinguished from a gear in that sprockets are never meshed together ...

  7. Fixed-gear bicycle - Wikipedia

    en.wikipedia.org/wiki/Fixed-gear_bicycle

    A fixed-gear bicycle. An 18-tooth sprocket that attaches to the rear hub of fixed-gear bike. Track sprockets are typically attached and removed from the hub by screwing them with a chain whip. This tool incorporates a lockring spanner for securing a reverse threaded lockring against the sprocket. A fixed-gear bicycle (or fixed-wheel bicycle in ...