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Old 09-21-11, 09:45 AM   #1
sikabk
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Question - how to identify c-record exa-drive chainrings?

Hi:

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. Reason: curses
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Old 09-21-11, 04:12 PM   #2
sikabk
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A little bump here....any idea what the "AS" stands for? I'd like to purchase a set of rings, but I'd also like to know what I'm buying. Thanks again.
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Old 09-21-11, 04:18 PM   #3
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I think the chainring style does not matter. Non exa drive rings should work so long as they are the same campy bolt circle pattern. Good luck.
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Old 09-21-11, 07:07 PM   #4
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Thanks SoreFeet! I just ordered a 53-AS for a 90's Chorus 8 speed and a 42-AS inner ring.
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