[CR]campy pista bcd's

Example: Production Builders:Peugeot:PX-10LE

Date: Fri, 2 Nov 2007 11:43:34 -0400 (EDT)
From: Andrew Gura <agura@earthlink.net>
To: classicrendezvous@bikelist.org
Subject: [CR]campy pista bcd's

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