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Tag Archives: repair
Shimano Internal-Gear Hubs
John has made major updates to the pages on Shimano Nexus and Alfine internal-gear hubs — 3-speed, 7-speed and 8-speed; also a page with general mechanical information.
Posted in Updates
Tagged 3-speed, 7-speed, 8-speed, Alfine, hub, internal, internal-gear, maintenance, Nexus, repair, shimano
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Assembly of Shimano 7-speed Hub Axle Unit
Shimano’s service instructions for the Nexus 7-speed internal-gear hub assume that you will replace the entire axle unit. Taking disassembly past the point where instructions are available is all too easy. You might also want to cannibalize parts to assemble … Continue reading
Internal gear theory
John has posted his article on internal-gear hub theory, history and some practical advice. This article describes the internal workings of all the newest hubs including those with compound and multi-stage gearing.
Posted in Updates
Tagged compound, gearing, gears, hub, internal, internal-gear, multi-stage, Nexus, planetary, repair, Sachs, shimano, SRAM, Sturmey-Archer
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Flats photos
John added photos of a frame pump, mini pump and CO2 inflator to flats.html.
John Allen’s updates to the site 12/2010-3/2011
March 13-22-25 headsets.html – major updates including instructions on adjustment of threaded headsets; added exploded diagrams; resized photos and added a photo of a “brinelled” bearing race. More to come — photos of disassembly/reassembly. March 12 velos.html — added comments … Continue reading
Posted in Updates
Tagged articles, axle, bicycle, bowden cable, brake, cable, chain, chains, gears, hub, internal-gear, planetary, repair, Sheldon, Sheldon Brown, sheldonbrown, sheldonbrown.com, shifter, shimano, Sturmey-Archer, tandem, tandems
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