Addition to wheelbuilding page

Posted on November 26, 2011 by John

New information in the wheelbuilding page about removing the bend from spokes where they exit the hub flange…

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Updates to pages about helmet cameras

Posted on November 26, 2011 by John

John has updated pages about the GoPro and Contour helmet cameras to cover new models.

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Writeup on Bike Touring News

Posted on November 26, 2011 by John

Nice writeup of sheldonbrown.com!

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Bridgestone 1982 Catalog

Posted on November 19, 2011 by John

Thanks to Daniel den Hartog for his PDF of the 1982 Bridgestone Bicycles catalog, now online from the Bridgestone table of contents page along with all the other catalogs from 1985 through 1994 and a wealth of other information.

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Isvan on Power Management

Posted on November 2, 2011 by John

Osman Isvan has written a paper, Power Management for Lightweight Vehicles, and has been kind enough to send it for posting on sheldonbrown.com. Isvan gives special attention to how to make the most efficient use of electrical-assist power. His conclusions are probably not what you expect!

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Sachs Elan/SRAM E12 Internals

Posted on November 1, 2011 by John

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 its ratios carries an important lesson. In connection with that article, John has updated his article about the history of the Elan, his main page about Sachs/SRAM hubs and the internal-gear calculator.

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More about Sachs/SRAM hubs

Posted on October 16, 2011 by John

John has prepared a new page about the Sachs Orbit hybrid-gear hub and added information about this hub to internal-gears.html and sachs-internal.html; also links to Karsten Stielow’s very interesting Web pages about Sachs and SRAM hubs.

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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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