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  2. Gear inches - Wikipedia

    en.wikipedia.org/wiki/Gear_inches

    A bicycle with a 26-inch wheel, a 48-tooth chainring, and a cassette with gears ranging from 11 to 34 teeth has a lowest gear of 26 × 48 / 34 = 37 gear inches and a highest gear of 26 × 48 / 11 = 113 gear inches. For bicycles with 700c wheels, some cyclists quote gear inches based on a nominal wheel diameter of 27 inches, corresponding to the ...

  3. 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 ...

  4. Glossary of cycling - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_cycling

    A mountain bike with wheels that are approximately 29 inches (740 mm) in diameter and are based on ISO 622 mm (700C) rims. [1] [2] 3:1 rule A UCI rule stating the depth and breadth (in cross-section) of the bicycle frame tubes cannot exceed the ratio of 3:1. [3] [4]

  5. List of bicycle types - Wikipedia

    en.wikipedia.org/wiki/List_of_bicycle_types

    Racing bicycles have a relatively narrow gear range and typically vary from medium to very high ratios, distributed across 18, 20, 27, or 30 gears. The more closely spaced gear ratios allow racers to choose a gear that will enable them to ride at their optimum pedaling cadence for maximum efficiency.

  6. Comparison of hub gears - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_hub_gears

    428% [7] 160 Nm [7] 1200g raw cartridge, 1750g total system weight including SWAP and Hyseq Onesie [7] eMTB, heavy cargo, commuter. Rohloff AG. Speedhub 500/14.

  7. Hub gear - Wikipedia

    en.wikipedia.org/wiki/Hub_gear

    A hub gear, [ 1] internal-gear hub, [ 2] internally geared hub[ 3] or just gear hub[ 4] is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears and mechanism are exposed ...

  8. ISO 5775 - Wikipedia

    en.wikipedia.org/wiki/ISO_5775

    ISO 5775. ISO 5775 is an international standard for labeling the size of bicycle tires and rims. The system used was originally developed by the European Tyre and Rim Technical Organisation (ETRTO). It is designed to make tire sizing consistent and clear. It replaces overlapping informal systems that ambiguously distinguished between sizes.

  9. Bicycle drivetrain systems - Wikipedia

    en.wikipedia.org/wiki/Bicycle_drivetrain_systems

    A chain drive and rear derailleur gear change, the most popular system in use today. A shaft-drive with crankset and rear gear hub. Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels. Most also include some type of a mechanism ...

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