iPad app references sheldonbrown.com

Posted on January 27, 2012 by John

The recently-released iPad app Cyclepedia is for the most part a very slick, enhanced presentation of 100 bicycles in a historical collection ranging from 1920 to the present. The photography is superb, the bicycles are of many different types, and the app makes full use of the iPad to rotate and zoom the images, even to swipe images of folding bicycles to see how they fold. Cyclepedia was app of the week in the UK iPad store. It references sheldonbrown.com for further technical information.

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Sun Tour bicycle components

Posted on November 26, 2011 by John

Several additions to the Sun Tour article, especially about freewheels.

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Fixed articles fixed!

Posted on November 26, 2011 by John

Fixed articles fixed! Sheldon kept an older version of his fixed-gear articles online so as not to break Web links from other sites. These articles are now updated to the same content as the newer version.

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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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