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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 ...
Hub gear: a gearbox mounted inside the hub, 3-speed is common, 5, 7 are available ("Sturmey-Archer"), Enviolo makes a CVT, and Rohloff makes a 14-speed hub. Cable operated by one or two cables; 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 ...
Shimano Alfine SG-500 2006 2016 (?) [15] 8 307% 1600 g City Shimano Nexus Inter-8: 8 307% 5th gear 1550-2040 g City Shimano Nexus Inter-7: 1995 7 244% 1465-1860 g City Shimano Nexus Inter-5E 2019 5 263% 60 Nm 1st gear 1650 g e-bike Shimano Nexus 4 Speed 4 184% 1st gear City Shimano Nexus Inter-3: 3 187% 2nd gear 1220 g City SRAM Spectro E12 (Elan)
The Shimano Front Freewheel (FFS) was a proprietary bicycle drivetrain design of the 1970s that placed a freewheel between the pedal cranks and the front chainrings – enabling the rider to shift gears while coasting. [2] FFS rear freewheel is different than a standard freewheel because it's "stiff" with more friction than a normal rear freewheel.
Shimano Alfine SG-S700 11 speed epicyclic internally geared hub, without auxiliary components. Alfine is a comfort and urban oriented product series by Shimano. It is mainly known for internally geared hubs, but includes also hydraulic disc brakes and levers, chain tensioners, dynamo hubs, cranksets, shift levers, and complete wheels. [1]
A Rohloff Speedhub hub gear A Shimano XT rear derailleur on a mountain bike A bicycle gearbox with chain tensioner. Bicycle gearing is the aspect of a bicycle drivetrain that determines the relation between the cadence, the rate at which the rider pedals, and the rate at which the drive wheel turns.
Shimano Nexus Inter 8 hub excluding auxiliary components. Shimano Nexus gear shift lever. Shimano Nexus is a brand of bicycle components which includes products such as epicyclical gear hubs, cranksets, shifters, brake levers, hub brakes, hub dynamos, and a CPU for automatically changing gears.
Bicycle wheel with wooden rim Nipples Spokes Cross-section of a rim A Shimano Dura-Ace freehub-style hub A bicycle wheel is a wheel , most commonly a wire wheel , designed for a bicycle . A pair is often called a wheelset , especially in the context of ready built "off the shelf" performance-oriented wheels.