- freewheel hub
-  A type of hub fitted to the front axle of some four-wheel drive vehicles, in which the drive to the front wheels can be disconnected when the front axle is not being driven. Older type of a bicycle rear hub designed to accept the freewheel type of gear cluster. The freewheel hub is threaded to accept the freewheel cluster.
Dictionary of automotive terms. 2015.
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Freewheel — For information about the bicycle component, see Cogset. Freewheel mechanism … Wikipedia
hub freewheel — see freewheel hub … Dictionary of automotive terms
hub —  On a bicycle, the center of a wheel consisting of a shell to which spokes attach and contains an axle along with two sets of bearings, bearing cones, lockwasher, locknuts, and parts for attaching the wheel to the frame.  The base of a… … Dictionary of automotive terms
Freewheel — Free wheel , n. (Mach.) A clutch fitted in the rear hub of a cycle, which engages the rear sprocket with the rear wheel when the pedals are rotated forwards, but permits the rear wheel to run on free from the rear sprocket when the pedals are… … The Collaborative International Dictionary of English
freewheel — [frē′hwēl΄, frē′wēl΄] n. 1. in a bicycle, a device in the rear hub that permits the rear wheel to go on turning when the pedals are stopped 2. in some automobiles, helicopters, etc. a device that permits the speed of the drive shaft or rotor to… … English World dictionary
Hub gear — Sturmey Archer SX3 A Sturmey Archer AM bicycle hub gear mechanism wi … Wikipedia
freewheel —  Usually refers to the action of a vehicle on a downgrade when the overdrive over running clutch is slipping with a resultant loss of engine braking. This condition will occur only after the overdrive unit is engaged but before the balk ring… … Dictionary of automotive terms
freewheel — I. noun Date: 1930 a clutch fitted in the rear hub of a bicycle that permits the rear wheel to run on free from the rear sprocket when the pedals are stopped II. intransitive verb Date: 1903 1. to roll along freely independent of a gear 2. to… … New Collegiate Dictionary
Flip-flop hub — Flip flop hubs, also called double sided hubs, are rear bicycle hubs that are threaded to accept cogs and/or freewheels on both sides. There are several different types of flip flop hubs available for different applications. Their main purpose is … Wikipedia
freewheeling hub — /friwilɪŋ ˈhʌb/ (say freeweeling hub) noun a hub system used in many four wheel drive vehicles which allows the wheels to freewheel and not turn the drive mechanism under normal road conditions, thus reducing frictional loss. Also, freewheel hub … Australian English dictionary