Category Archives: Updates

Major updates to the headsets page

The headsets page has been updated with much more information on threadless headsets, a description of the Standardized Headset Identification System, advice on mixing and matching headset types, and more!

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Update to 5-speed hub information

Our Sturmey-Archer 4, 5 and 7-speed hub page has been updated with links to newly-available information on recent 5-speed hubs.

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Update to the 10-speed cassette page

Major update of the 10-speed cassette page — covers new models and an additional brand. 

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Air bag helmet demo

An air bag bicycle helmet has been in the news lately, and there is an evaluation of it online, if you care for the details. However, years ago, Sheldon posted a scan of a poster for another air bag helmet … Continue reading

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Lock Strategy

Our article on locking bicycles has been updated and expanded. Don’t let your bicycle get stolen!

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ShelBroCo Helium!

Helium weighs only 0.13 times as much as air. Imagine what it can do for your tires! Find out about ShelBroCo Helium!

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Shimano 9-speed cassettes

Major update to our page on Shimano and Shimano-compatible 9-speed cassettes. We’ve fixed broken links from when manufacturers updated *their* Web pages, and updated information on availability.

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SRAM Automatix 2-speed hub

New article about the SRAM Automatix two-speed hub. We have information on maintenance, choice among variant models, and how to adjust the speed at which it shifts automatically.

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Morrow coaster brake page revised

Sheldonbrown.com keeps reference material available on older coaster brakes and internal-gear hubs. We’ve just revised the page on the antique Morrow coaster brake —  

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Gear Calculator updated and now also in German

The Sheldon Brown gear calculator is updated and improved: more tire sizes are covered including fatbikes, 29ers, 29+ and monster bikes, and we now have a version in German, as well as French.

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