i'm wondering how i tell what BCD my campy pista cranks are -- they're the stock equipment on my 74 paramount.
is there a definitive guide somewhere?
i tried the sheldown brown method (http://www.sheldonbrown.com/gloss_bo-z.html) and my chainring bolts seem to measure just below 90mm c-t-c but that would make them 151BCD and i think the bike is too new for that. or maybe i'm wrong.
thank you
andrew gura
silver lake, ca