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Derailleur: an assembly of levers, usually cable-actuated, that moves the chain between sprockets on a cassette or chainring assembly; Derailleur cage: the part of the Rear derailleur that holds the Pulley wheels; Quick release dropout: a piece on the rear dropout that the derailleur attaches to.
On a bicycle, the cassette or cluster [1] is the set of multiple sprockets that attaches to the hub on the rear wheel. A cogset works with a rear derailleur to provide multiple gear ratios to the rider. Cassettes come in two varieties, freewheels or cassettes, of which cassettes are a newer development. Although cassettes and freewheels perform ...
Eccentric bottom bracket on a Burley tandem bicycle held in place with two set screws. The term is also used to refer to the device often used on tandem bicycles with timing chains, single-speed bicycles with a rear disc brake or an internal-geared hub, or any bicycle with vertical dropouts and no derailleur, to allow slight repositioning, fore and aft, of a bottom bracket to properly tension ...
16 tooth sprocket. Do = Sprocket diameter. Dp = Pitch diameter A sprocket and roller chain. 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 ...
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.
It consists of one or more sprockets, also called chainrings [1] [2] [3] or chainwheels [3] attached to the cranks, arms, [4] or crankarms [5] to which the pedals attach. It is connected to the rider by the pedals, to the bicycle frame by the bottom bracket, and to the rear sprocket, cassette or freewheel via the chain.
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]
Aerozine ceramic external bottom bracket bearing cups for BSC/ISO standard, that is M34.798×1.058 mm (1.37″-24 TPI) threads and a 68 mm wide bottom bracket shell. The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely.