Tag Archives: repair

Sheldon’s Articles for Adventure Cycling

From 1999 through 2007, Sheldon wrote the column “Mechanical Advantage” for Adventure Cycling, the magazine of the Adventure Cycling Association. He covered a wide range of mechanical topics, oriented toward the needs of the bicycle tourists with the Adventure Cycling … Continue reading

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On-Road Repairs

John has added a new article about on-road repairs and the on-road toolkit.

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Upgrading old road bikes

I’ve filled out and Harriet has formatted Sheldon’s page about upgrading old road bikes, which Sheldon left as a work in progress.

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Sachs Elan/SRAM E12 Internals

John has posted a new article about the mechanism of the Sachs Elan/SRAM E12 12-speed internal-gear hub; the largest, heaviest, most complicated internal-gear hub ever marketed — flawed execution of a brilliant design concept. The unusual way this hub establishes … Continue reading

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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.

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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

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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.

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Flats photos

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

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Stuck seatposts

John has added information on yet another way to remove a stuck seatpost — dissolving it using a strong chemical.…

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Flats

John has made a few revisions to Sheldon’s page on flat tires. More to come…

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