Originally Posted by Cleave

Sara, that looks like a short cage to me. Campagnolo's literature says 26T max but DaveSSS had a primer in the 41 on how to make a 29T work with a Campy short cage derailleur. I successfully tried it this past summer. I only used it once and I ended up with a separate chain cut to just the right length to go with the 29T cassette. I'll see if I can relocate the thread later.