Hub gear
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 Sturmey-Archer S3X |
A hub gear, internal-gear hub, or just gear hub is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears. The gears and lubricants are sealed within the shell of the hub gear, in contrast with derailleur gears where the gears and mechanism are exposed to the elements. Changing the gear ratio was traditionally accomplished by a shift lever connected to the hub with a Bowden cable, and twist-grip style shifters have become common.
- Related: Bicycle drivetrain systems, Bicycle gearing, Gear inches, NuVinci
| Flash Animation of Hub Gear Flash Animation of Hub Gear www.mekanizmalar.com/transmission.html - Web |
| Overview of gear ratios and ranges for existing in... Overview of gear ratios and ranges for existing internal gear hubs www.sheldonbrown.com/internal-gears.html - Web |
| Tony Hadland's Bicycle Gear History and Technical ... Tony Hadland's Bicycle Gear History and Technical pages www.users.globalnet.co.uk/~hadland/gear.html - Web |
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