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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What's new at sheldonbrown.com
Helium weighs only 0.13 times as much as air. Imagine what it can do for your tires! Find out about ShelBroCo Helium!
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.
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.
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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