We have added new sections on derailer maintenance to the derailer adjustment page, including how to cannibalize rear derailers, being careful about compatibility, and how to check cables, 
Tag: derailleur
Updated information on drivetrain compatibility
Our article about cassettes has been updated to include information on 11-speed systems. Interesting — all major brands of 11-speed casettes now have the same sprocket spacing. Most rear derailers and shifters are not compatible, though. We can tell you which ones are.
Upgrading old road bikes
I’ve filled out and Harriet has formatted Sheldon’s page about upgrading old road bikes, which Sheldon left as a work in progress.
Sun Tour bicycle components
Several additions to the Sun Tour article, especially about freewheels.
Sun Tour components
John has done a major update and expansion of Sheldon’s article on Sun Tour components.
varsity-shaddox.html
Minor edits, a tag line and a photo added to Tom Shaddox’s article about the Schwinn Varsity.
