Originally Posted by
jbrow1
I'll have to look into compact specific FD's. I wouldn't even need a big ring if all I did is race it, but I often ride on the roads to impromptu club "races." Nice to have a 50T for the road. Have a nice 36/46 crankset, but put it lives on the wifes bike for now..
As of 2010 Campagnolo double front derailleurs were officially compatible with chain rings from 45 to 57 teeth although using the braze-on version with a traditional sized mounting slot instead of a clamp-on would preclude using all that range.
Their specs tend to be conservative and I can't see why a Shimano or SRAM front derailleur wouldn't work similarly provided the chain line was correct.
Just use a standard road double.