Track racing bike-build

I don't know why they persist with this archaic measure, since pedal selection and Q-factor also have a large effect on cornering clearance. Even tyre profile has a small effect. Surely it would make sense to change to an angle measurement; it would not be hard to make a scrutineering jig to check it, certainly easier than measuring BB height and crank length.

I've only ever seen a BB height measured once for the track , and that was at newport.
It's true pedals make a difference which is why these things are at coach's discretion.

Velodrome rules are generally there for riders to make their judgements before turning up (and possibly being told their bike is unsuitable) It's only really become an issue since people started bringing road 'fixies' along, low BBs 170 cranks and learner pedals mean you will catch the banking when doing lumps and bumps, even at HH