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A hub gear, [1] internal-gear hub, [2] internally geared hub [3] or just gear hub [4] 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 ...
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) 1995 1999 12 339% 3500-4000 g City SRAM i-Motion 9: 2005 2012 9 340% 2000g (w/o brake)-
All Sturmey-Archer gear hubs use epicyclic (planetary) geartrains of varying complexity. The AW is the simplest, using one set of planetary gears with four planets. The AM uses three compound planets with differently sized cogs machined from a common shaft to engage the gear ring and sun gear separately, while the close-ratio three-speeds, and hubs with four or more speeds, use multiple ...
Download QR code; Print/export ... Pages in category "Hub gears" ... This list may not reflect recent changes. Comparison of hub gears; Hub gear; N.
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At the time, the gear hub with the greatest number of speeds was the unreliable 3700 gram 12 speed Sachs Elan (discontinued by 2000), made by the hub-gear manufacturer Sachs (later acquired by SRAM). A year later Rohloff presented a workable prototype at the 1997 IFMA and won a crate of champagne from the employees at Sachs, who had bet against ...
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.
Kindernay was a brand of hub gears manufactured by the Norwegian start-up company CA Technology Systems. [1] They used hydraulic gear levers and were manufactured in Oslo, Norway. Their system differed from their competitors by having a modular design called Swap Cage where the gear mechanism can be easily separated from the hub housing, so ...