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Bicycle rear wheel showing front and rear derailleurs, and rear cogset. External gearing is so called because all the sprockets involved are readily visible. There may be up to 4 chainrings [10] attached to the crankset and pedals, and typically between 5 and 12 sprockets making up the cogset attached to the rear wheel.
A gear case, also known as a chain case or chainguard, is an enclosure for the bicycle chain and sprocket assemblages commonly employed by utility bicycles. It serves to protect the cyclist from being soiled or trapped in the chain rings and tends to fully enclose the drive train. It may also contain an oil bath to keep the chain lubricated.
The DW-link is a subset of the common four-bar system used widely in bicycle suspension. The four-bar system has been used on mountain bikes since the early days of suspension. Similar suspension systems to the DW-link have been used by Schwinn, Fisher and Karpiel. Currently a similar system is used by Giant and named "Maestro".
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.
Indicator: a turn signal; Inner tube: a bladder that contains air to inflate a tire. Has a Schrader, "Woods"/"Dunlop" or Presta valve for inflation and deflation; Jockey wheel or Pulley wheel: one of two small sprockets of the rear derailleur that guides the chain; Kickstand: a folding attachment used for assisting a bicycle to stand up on its ...
Modern cycling shoes are designed to work with clipless pedal systems. Such systems temporarily connect the shoe to the pedal in a manner similar to a ski binding system. The aim is maximal efficiency of power-transfer, using a cleat on the sole of each shoe and a matched fitting on the pedal.