Front freewheel
A front freewheel or freewheel crank is a freewheel mechanism used on some bicycles which enables the drivetrain of the bicycle to continue spinning while the rider rolls, but stops pedaling, or coasts. Unlike regular bicycles, a front freewheel can make it possible to shift gears using a derailleur while the rider is coasting if paired with a fixed rear hub or a freehub with a slight resistance in the freewheel mechanism, which causes the chain to continue spinning with the wheel rotation.[1]
Freewheels in bottom brackets have been used on some
History
The
FFS marketing followed Shimano's then-current path of beginning with lower-cost implementations of the system using low tech and usually heavier materials. The resulting system was substantially heavier than the standard freewheel and, in any event, did not penetrate the market noticeably, although
Non-proprietary front freewheels can currently be found on bikes used for
References
- ^ Intend adds a freewheel to their cranks, letting you shift without pedaling - Bikerumor
- ^ "Shimano 1982 Catalog: FF System". Retrieved 2012-10-16.
- ^ "Sheldon Brown, Shimano".
- ^ "Trials Tech". www.biketrials.com. Retrieved 2015-10-08.