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  2. History of the bicycle - Wikipedia

    en.wikipedia.org/wiki/History_of_the_bicycle

    History of the bicycle. 1886 Swift Safety Bicycle. Vehicles that have two wheels and require balancing by the rider date back to the early 19th century. The first means of transport making use of two wheels arranged consecutively, and thus the archetype of the bicycle, was the German draisine dating back to 1817.

  3. Raleigh Twenty - Wikipedia

    en.wikipedia.org/wiki/Raleigh_Twenty

    The Raleigh "Twenty" or "Shopper" was a small-wheeled bicycle made by Raleigh from 1968 until the early 1980s. It was Raleigh's answer to the Dawes Kingpin, which had been on the market since 1964. The Twenty was made in both folding and "fixed" versions. The Twenty was a companion model to the RSW 16, which had been Raleigh's competitor to the ...

  4. 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 ...

  5. 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 ...

  6. Gear inches - Wikipedia

    en.wikipedia.org/wiki/Gear_inches

    Simplified diagram of gear inches: As the rear sprocket is halfed in size, the distance traveled by the rear wheel doubles, at half the torque. Gear inches is an imperial measure corresponding to the diameter in inches of the drive wheel of a penny-farthing bicycle with equivalent ( direct-drive) gearing. A commonly used metric alternative is ...

  7. List of bicycle brands and manufacturing companies - Wikipedia

    en.wikipedia.org/wiki/List_of_bicycle_brands_and...

    This page lists notable bicycle brands and manufacturing companies past and present. For bicycle parts, see List of bicycle part manufacturing companies.. Many bicycle brands do not manufacture their own product, but rather import and re-brand bikes manufactured by others (e.g., Nishiki), sometimes designing the bike, specifying the equipment, and providing quality control.

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