John has added quite a bit of text to the cranks page; more about crank length, and an entirely new section on how to check for several kinds of damage; also several illustrations where there were none before.

What's new at sheldonbrown.com
John has added quite a bit of text to the cranks page; more about crank length, and an entirely new section on how to check for several kinds of damage; also several illustrations where there were none before.

Major revision to our article about Sturmey-Archer indicator spindles — which ones fit which hubs. Also a new article on how to measure for an indicator spindle in case you can’t identify the hub. Many thanks to Bruce Dance for suggestions, corrections and new material!
Photos and text have been added giving examples of different tapers, and combinations of spindle and crank that are compatible, or not. It’s here.
John has expanded and updated the article on cotterless cranks.