I posted this in bike mechanics, but thought it may be relevant here as well:
I have been wanting to try a compact on my 2008 Felt F3. The hill to my house is 13-15% grade, and my standard road double just doesn't have enough gear to get me up the hills. I have already installed a 12-30 cassette, and that helped, but wasn't quite enough. My current crank is a 2008 Shimano Ultegra SL (6600) with a Hollowtech II BB. I would prefer to get something compatible with my current BB, so I don't have to add the expense of bearing removal tools, but if buying tools is cheaper, I'm willing to look into it. The best bet I have found so far looks like the Shimano 5750. It appears to be almost identical to my older Ultegra crank.
Any Suggestions? Thanks!