I've got ultegra shifters, front derailleur, & am running a 50-34 crank without a problem. It did ocassionally go off the inner chainring when i first got it, told the bf to tweak it, he spent about 5 mins, and it's been fine ever since.... I can force it off if I'm dumb and don't realize that I'm in the big chain ring and I keep trying to shift into it (I dunno why, but I did that the other day)

Bf's also got the same set up on one of his bikes (ultegra and compact cranks), so it can be done and it didn't seem particularly difficult to do.


What cranks are you using? I know in some of the crank reviews I've been reading (fsa gossamers), people have claimed that buying shimano compact cranks completely solved any problems they had with tuning the compact or the chain going off the cranks...