Posts Tagged ‘Crank’

The Bottom Bracket (Un) Standard

Tuesday, December 20th, 2011

PressFit30 on the Foundry Auger w/ Sram Force Crank Bottom brackets are a part that many cyclists tend to either overlook or are completely unaware of – much less what style, shape, or size it is. The Bottom Bracket (often abbreviated to bb) is the bearing assembly that the crank arms rotate on. In recent years the choices in bottom bracket type have expanded greatly and it seems every year some new form or standard is set. It’s also a part that isn’t much thought about when it works, but when things go wrong it can ruin a day on the road or trail. If you’re building a new bike or repairing an old one, here’s a list of all the info you’ll need to determine what kind of bottom bracket you have. (more…)