Tag Archives: repair

Shimano Internal-Gear Hubs

Posted on September 29, 2011 by John

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.

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Assembly of Shimano 7-speed Hub Axle Unit

Posted on September 12, 2011 by John

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 →

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Internal gear theory

Posted on September 10, 2011 by John

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.

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Flats photos

Posted on August 29, 2011 by John

John added photos of a frame pump, mini pump and CO2 inflator to flats.html.

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John Allen’s updates to the site 12/2010-3/2011

Posted on April 3, 2011 by John

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 →

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