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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Bicycle Video How-to

Posted on September 27, 2011 by John

John has posted an article on how to synchronize video shot at the same time with more than one camera, and another on image stabilization. These are meaty technical articles.

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Helmets

Posted on September 27, 2011 by John

John has written an article about helmets and helmet issues. It includes a blast from the past, John’s photo of Sheldon in 1978 wearing a pre-Igor the Eagle helmet, and photos documenting changes in helmet design since the 1970s.

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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 one axle unit that works from two or more which do not. Reader Keith Lang has provided instructions in two PDF files. You may go to John’s introduction with links to those files..

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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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Frayed cable

Posted on August 30, 2011 by John

John has added a photo of a frayed cable to the article on cables.

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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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Updates on chains and tandems

Posted on August 28, 2011 by John

chains.html — substantial revisions.

tandem.html, tandem2.html — minor revisions.

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Pictures from the 2011 Larz Anderson Bike Fair

Posted on August 24, 2011 by Harriet

Pictures from this year’s Larz Anderson Bike Fair and Bike Swap can be found at

http://sheldonbrown.com/Larz2011/

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More updates

Posted on August 22, 2011 by John

John Allen has done some revisions to the articles on tires/tyres and added more information on GPS to the article on cyclecomputer calibration.

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