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.

Exploded diagram of the SRAM Automatix hub

Exploded diagram of the SRAM Automatix hub

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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

Morrow coaster brake

Morrow coaster brake


 

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Customizing a fatbike

Bruce ingle on his customized fatbike

Bruce Ingle on his customized fatbike

Bruce Ingle customizes a fatbike —

Fatbikes are intended for use on soft, muddy, sandy, snowy surfaces but they need customization to make them truly practical for such use — in particular, fenders, wide-range gearing including ultra-low gears, and a way to carry baggage. Our new article will help you to customize a fatbike, but also gives you a look into customizing bicycles, in general.

The article is taken from a running e-mail discussion in which Bruce contemplates choices, decides on a bicycle purchase, and describes the various steps of customization and how they worked out.

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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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Remembering Sheldon

“The bicycle on the cover was produced on the Management Graphics Table Top Slidemaking System at Crimson Camera Technical Sales in Boston.  A bicycle enthusiast created the image using the tablet menu and cursor tracker.  The bicycle is made up of 99 vectors, 20 circles, and 5 ellipses.  This simple graphic was created to illustrate to customers what 4000-line resolution looks like.”

The “bicycle enthusiast” was Sheldon Brown who worked for a short time at Crimson Camera.  Sheldon died eight years ago today.
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Riding with RidewithGPS

New article on riding with the RideWithGPS app. What you need to know to get started: mounting your phone, keeping it charged, downloading routes, and recording your rides.

RidewithGPS

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Tools and supplies to work on tires

Article about tools to care for tires and inner tubes (pumps, tire removal and replacement tools, flat-fixing supplies) pulled out of the article on fixing flat tires, which was getting too long, and expanded.

A good patch kit

A good patch kit

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Inner tubes

New article, all about inner tubes: tire fit, the three kinds of valves, pump compatibility, tips and tricks.

inner tube, deflated and rolled up

inner tube, deflated and rolled up

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Leather saddle repair

Simon Firth, of Transport cycles, Philadelphia, Pennsylvania, USA, Brooks authorized repair site.

Simon Firth, of Transport cycles, Philadelphia, Pennsylvania, USA, Brooks authorized repair site.

A rail on your Brooks leather saddle broke? Our new page lists repair sites around the world. Your repaired saddle will be better than new, because it is broken in. Photo: Simon Firth, of Transport cycles, Philadelphia, Pennsylvania, USA, authorized Brooks repair site. Do-it-yourself repair is also sometimes possible and we tell how.

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Shimano Rollerbrake page updated

Revisions to the Shimano Rollerbrake page: links to Shimano’s (finally) well-organized compilation of Rollerbrake documentation; information on installing front Rollerbrakes.

Shimano Rollerbrake

Shimano Rollerbrake

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