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  2. Cogset - Wikipedia

    en.wikipedia.org/wiki/Cogset

    Multiple speed freewheels were common on quality high end bikes until the late 1980s. [3] Suntour — Maeda Industries (Japan) introduced a compact 6 speed freewheel which reduced the spacing between the sprockets and was the same width as a standard 5 speed freewheel but required a narrower chain than the standard.

  3. List of bicycle parts - Wikipedia

    en.wikipedia.org/wiki/List_of_bicycle_parts

    Hub gear: a gearbox mounted inside the hub, 3-speed is common, 5, 7 are available ("Sturmey-Archer"), Enviolo makes a CVT, and Rohloff makes a 14-speed hub. Cable operated by one or two cables; Indicator: a turn signal; Inner tube: a bladder that contains air to inflate a tire. Has a Schrader, "Woods"/"Dunlop" or Presta valve for inflation and ...

  4. Freehub - Wikipedia

    en.wikipedia.org/wiki/Freehub

    On the Bayliss-Wiley design the freewheel unit was threaded to accept the sprockets. A different 4-speed design was manufactured by BSA Cycles Ltd in 1949 to accompany their BSA 4 Star derailleur gear. The BSA design had a splined freewheel unit (BSA part No.8-1913) which attached to the hub shell (BSA part No.8-701) and carried four sprockets. [3]

  5. Freewheel - Wikipedia

    en.wikipedia.org/wiki/Freewheel

    The freewheel meant that the engine returned to its idle speed on the overrun, thus greatly reducing noise from both the engine and gearbox and reducing oil consumption. The mechanism could usually be locked to provide engine braking if needed. A freewheel was also used in the original Land Rover vehicle from 1948 to 1951.

  6. Shimano - Wikipedia

    en.wikipedia.org/wiki/Shimano

    Freehub style hubs are inherently stronger than screw-on sprocket and freewheel setups because it allows the bearings on the drive side of the hub to sit nearer to the end of the hub axle, reducing bending in the axle caused by chain tension and rider weight, a significant problem leading to fatigue failure in many axles as 6 and 7-speed blocks ...

  7. Sturmey-Archer - Wikipedia

    en.wikipedia.org/wiki/Sturmey-Archer

    All Sturmey-Archer gear hubs use epicyclic (planetary) geartrains of varying complexity. The AW is the simplest, using one set of planetary gears with four planets. The AM uses three compound planets with differently sized cogs machined from a common shaft to engage the gear ring and sun gear separately, while the close-ratio three-speeds, and hubs with four or more speeds, use multiple ...

  8. Crankset - Wikipedia

    en.wikipedia.org/wiki/Crankset

    3/32″ (2.38 mm) for road, hybrid, mountain bikes, single-speed and 5-, 6-, 7- and 8 speed freewheels or cassettes. ... If used with a screw-on freewheel, a special ...

  9. Bicycle gearing - Wikipedia

    en.wikipedia.org/wiki/Bicycle_gearing

    A single-speed bicycle is a type of bicycle with a single gear ratio and a freewheel mechanism. These bicycles are without derailleur gears, hub gearing or other methods for varying the gear ratio of the bicycle. Adult single-speed bicycles typically have a gear ratio of between 55 and 75 gear inches, depending on the rider and the anticipated ...

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