Bottom bracket information revised

We’ve added David Richardson’s photo of damage to a Shimano Octalink V1 crank from installing it on a V2 spindle to the bottom-bracket database. Also, we’ve coordinated bottom-bracket threading standards tables in the several files where they appear.

Jobst Brandt pages updated

jobst-bike2-shortHarriet has reorganized the Jobst Brandt pages — formatting for easier reading, placing them into categories and in sequence, fixed broken links. Brandt’s trenchant comments demolish a number of bicycling myths, and bring an engineering perspective to issues of mechanical design and performance.