Originally Posted by Dan Artley

I'm looking for a modern front derailleur that clamps to a 28.6 (1-1/8") seat tube and follows the curve of a compact drive double ring crank set, in this case 46 x 30 teeth. The only one's I've found are either braze on or 31? mm clamps. Is there a derailleur out there that would meet the bill that's pretty modern with ramps built into the inside plate for raising the chain?

It appears I may have to go with an old parallel plate front derailleur. I don't wish to use a braze on to a clamp, and/or not to a clamp that needs a shim. Any ideas? With an Ergo rear, I may settle immediately for an old Campy NR front. It's for a modern custom randonneur. Thanks in advance,