Just why does the bottom bracket (BB) hold such a level of fascination within the cycling psyche?
Perhaps it’s because that’s where a bike’s biggest bearings are to be found, and any sort of superlative holds a certain draw. Or perhaps it’s because of the cognitive challenge they pose - with so many styles and standards, they’re a veritable Everest to be surmounted, promising the warm glow of BB enlightenment once you know your square-taper from your cotter-pin…
