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A track bicycle or track bike is a form of fixed-gear bicycle optimized for racing at a velodrome or at an outdoor track. Some road racing and club cyclists use a fixed-gear bicycle for training during the winter months, generally using a relatively low gear ratio, believed to help develop a good pedalling style. [5]
While builders initially focused on single-speeds and internal hubs, in early 2009 f8 used a Gates-compatible fixed-gear cog designed by Phil Wood & Co., [10] offering a belt-driven fixed-gear bicycle. In 2009, Wayne Lumpkin, owner of Spot Brand and best known as the founder of Avid, designed a belt system called CenterTrack.
Freestyle fixed gear is stunt riding on a fixie. It is an extreme sport where the stunts share elements from BMX , artistic cycling , dirt jumping , and trials . The flat ground style of tricks, similar to artistic cycling , is called Trick-Track or Tarck.
Bicycle chains used in track, fixed gear and single speed cycling come in two common roller widths (the internal width between the inner plates), which is either 2.38 mm (3 ⁄ 32 in) or 3.18 mm (1 ⁄ 8 in). The chainring, sprocket and chain should all be the same width.
Fork end: paired slots on a fork or frame at which the axle of the wheel is attached. See also Dropout; Frame: the mechanical core of a bicycle, the frame provides points of attachment for the various components that make up the machine. The term is variously construed, and can refer to the base section, always including the bottom bracket, or ...
One standard option for the Brompton folding bicycle is to use a 3-speed hub gear (roughly a 30% difference between gear ratios) in combination with a 2-speed derailleur gear (roughly a 15% difference) to give 6 distinct gear ratios; this is an example of half-step gearing. Some Brompton suppliers offer a 2-speed chainring 'Mountain Drive' as ...