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.

Additions to the Shimano 8-speed IG hub page

Sheldonbrown.com reader Bruce Dance has contributed some helpful information on compatibility — or the lack of it — among different models. Read it on the 8-speed internal-gear hub page

Shimano Nexus hub
Shimano Nexus hub

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Spoking for large hubs, improved

The article on special spoking patterns for use with extra-large hubs (for example, electric bicycle hub motors) has been improved with patterns which avoid twisting the hub shell for two of the hub and rim combinations. The article includes all the information needed to use Damon Rinard’s Spocalc (also on the site) to calculate spoke lengths for these patterns.

Non-torquing spoke pattern for 36-hole hub and 24-hole rim
Non-torquing spoke pattern for 36-hole hub and 24-hole rim

Bicycle frame fatigue-resistance testing

Testing machine at EFBe laboratory
Testing machine at EFBe laboratory

The groundbreaking article about fatigue-resistance testing of bicycle frames — the results surprised even the people doing the test — now in a much-improved new translation from the original German.

Framebuilder information from Damon Rinard

Screen shot from tube mitering software
Screen shot from tube mitering software

Another Rinard article updated: his page of links to information, sources of materials and software for amateur frame builders.

Damon’s do-it-yourself carbon-fiber bicycle frame

Damon Rinard built a carbon-fiber bicycle frame in his garage! And we have just updated his pages describing how he did it, including sources for materials and tools. He points out that it’s actually much easier to build a carbon fiber frame than a steel frame.

Damon Rinard's do-it-yourself carbon-fiber bicycle frame
Damon Rinard’s do-it-yourself carbon-fiber bicycle frame

Check spoke tension by ear when building a wheel

Check the level of spoke tension by ear — unless you are tone deaf, a musical pitch reference (pitch pipe, tuning fork, smartphone app etc.) is all you need to tell whether you have brought spokes up to the appropriate level of tension when building a wheel. It’s faster than using a tensiometer!

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