Quote Originally Posted by nscrbug View Post
Hmmm...interesting. But I think this compatibility issue is limited to the Ultegra 6700 11-28t cassette. I'm sure if I bought an 11-28t 6600, there would be no issues. But I figured, with the 6700 offered at a such a great price ($59 at Nashbar)...I would just go with that. So I guess my specific question is...is anyone running a 6700 11-28t cassette with a 6600 RD?
I just got the 11-28T 6700 cassette a couple of weeks ago, and I'm using it with an Ultegra long cage derailleur from 2007 (not sure if it's 6600, though--can't find a model # on it, but it's definitely not a 6700). It works just fine. I've done a few hilly rides, and haven't had to have it adjusted yet.