Don't crank length and BB height compensate for each other?

Hi,

when I read discussions on here about different crank lengths and their connection to the danger of pedal strikes people tend to recommend to not go over a certain crank length of 165 or 170mm, but only rarely does someone ask for the BB height.

So, wouldn't for example a BB height of 280mm with 180mm cranks be the same as a a 270/170mm setup = wouldn't they compensate for each other 1:1 ?

jetski

Yes. And pedal type and shoe size are more of a factor anyway.

@Jetski: yes.

Okay.

I use Campag Aero pedals (http://campagnolo.wikispaces.com/file/view/Chorus_Pedals_1.png/30231000/Chorus_Pedals_1.png) and I was always wondering what advantage the track pedals of the same era offer (http://www.fast-autos.net/diecast-cars-models/diecast-car-image-large/vintage-80s-campagnolo-c-record-pedals_130417191402.jpg) as they do not look smaller?

Are they lighter? I very strongly suspect that the answer, for all practical purposes, is "none whatsoever".

If you want to get precise, Q-factor also plays a significant part in cornering clearance, about as much as crank length.

^^ This. I've noticed the difference in clearance switching between my old sug messenger 165s and my new 165 track cranks.

Are they lighter? I very strongly suspect that the answer, for all practical purposes, is "none whatsoever".

Weight is about the same, I have no clue why they are different (and why they are apparently very desirable to some riders)?