freehub
Sign in to saveAlso known as freehub body
right|thumb|A Shimano Hyperglide (HG) freehub A freehub is a type of bicycle hub that incorporates a ratcheting mechanism.
~5 min read
Encyclopedic overview
6 sectionsContents
- Comparison to freewheels
- History
- Types of freehub body fitments
- See also
- References
- External links
right|thumb|A Shimano Hyperglide (HG) freehub A freehub is a type of bicycle hub that incorporates a ratcheting mechanism.
A set of sprockets (called a "cassette") is mounted onto a splined shaft of the freehub to engage the chain. The ratcheting mechanism is a part of the hub, in contrast to a freewheel, an older technology, which contains both the sprockets and a ratcheting mechanism in a single unit separate from the hub. In many high-end and midrange bicycles, freehubs have replaced freewheel systems.
Excerpted from Wikipedia’s “freehub” article, available under the CC BY-SA 4.0 licence.