- Bicycle Chain, Derailleur, and Gears (Digital Video)
Bicycle gears, plus a chain and derailleur, are animated as a cyclist shifts gears on his bicycle.
- Bicycle Derailleurs
Gears on multi-speed bikes are usually changed by a derailleur. Learn more about bicycle shifters and gears, and find links to bicycle derailleur manufacturers.
- Bicycle Wheel Hub and Spokes (Digital Image)
A close-up view of the front wheel hub of a bicycle stands out in front of a bright yellow background. Learning how to ride a bike is pretty easy.
- Female Bicycle Mechanic and Cogwheel (Digital Image)
At a bicycle show, a female bicycle mechanic holds up a cogwheel, one of the many parts that make up a bicycle.
Large Gears in a Motor
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