Question - how to identify c-record exa-drive chainrings?
Need help figuring out how to tell if a Campagnolo chainring is an 8 speed exa-drive type. Also, I've run into designations and markings on Campagnolo chainrings that I don't know what they are. Example, some chainrings have the markings 53/39, some 53-AS, others -39- or 42-AS. What does the "AS" stand for? And some have a diamond marking with the letter c or letter e inscribed inside. On some chainrings there are chainstop pegs, a record version is in line with a hole and the chorus one is between the holes. So I know which one is a chorus or record, but what are the little rivets on the side are they only on exa-drive chainrings? What smaller ring is matched with say a 53-AS? Any help explaining these markings and details, and how they may relate to an exa-drive is appreciated. Thanks!
Side note: I have an early 90's chorus crankset, but the rings were changed out to work with a Shimano hub and cassette. I have a exa-drive hub and cassettes and I now need to find some chainrings.
Last edited by sikabk; 09-21-11 at 04:09 PM.