 A Shimano Deore crankset, drive-side showing crankarm, spider, and three chainrings The crankset is the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain, which in turn drives the rear wheel. It consists of one or more chainrings attached to the crankarms. 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. Shimano ((OTCBB: SHMDF), FWB: SHM) is a Japanese manufacturer of cycling, fishing, snowboarding, and until 2005, golf components. ...
This racing bicycle is built using lightweight, shaped aluminium tubing and carbon fiber stays and forks. ...
Leg has multiple meanings: For the limbs of animals that support them above the ground: in the case of the legs of humans, see Human leg; in the case of the legs of horses, see Equine leg; in the case of the legs of crabs, lobsters, and their close relatives...
Roller chain and sprocket A bicycle chain is a chain that transfers power from the pedals to the drive-wheel of a bicycle thus propelling it. ...
The front wheel from a racing bicycle made using a Mavic rim A bicycle wheel is a wheel designed for a bicycle. ...
A bicycle pedal provides the connection between the cyclists foot or shoe and the crankarm allowing the leg to be used to turn the crank. ...
A square-taper bottom bracket. ...
A sprocket is a gear with metal teeth that mesh with a chain. ...
On a bicycle, the cassette or the freewheel is the set of rear sprockets that attaches to a hub on the rear wheel. ...
Freewheel mechanism In mechanical or automotive engineering a freewheel is a device in a transmission that disengages the driveshaft from the driven shaft in the case that the driven shaft would rotate at a higher rpm than the driveshaft. ...
Roller chain and sprocket A bicycle chain is a chain that transfers power from the pedals to the drive-wheel of a bicycle thus propelling it. ...
On older styles the spider—the multi-armed piece that connects the chainring to the bottom bracket axle—was a separate piece from the crankarm. Modern drive-side crankarms have an integrated spider. Cheaper cranksets may have the chainrings welded directly to the crankarm. Older crankarms used a cotter pin for attachment to the bottom bracket. Newer crankarms attach to a square or splined bottom bracket axle.
 A Shimano chainring, detached from crankset
See also
Bicycle gearing is concerned with the connection between the pedals and the rear wheel of a bicycle, and with the effect this connection has on how easy or hard it is to turn the pedals. ...
References John Barnett (2003), Barnett's Manual: Analysis and Procedures for Bicycle Mechanics (5th Edition).Boulder, Colo:VeloPress. ISBN 1931382298 |
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