Well, the local bike shop has now clobbered my front derailleur and stripped out the helicoil and held the bike for more than 12 days now
I don’t know what size coil I need now and if I have to buy yet another fd, because the shop will not pay for one.
I didn’t know campy used a helicoil in the fd for a braze on and at this point I just want to get my bike back
didn’t expect an actual bike shop mechanic to mess up an installation.
Anyone using a campy group can tell me what part I need and it’s probably metric
I wasn't familiar with the term Helicoil.
You mean the little thread insert that the clamping bolt for the FD cable screws into, right?
I attached a photo of a Record 12sp FD.
I got various generations of Campagnolo stuff in use. I never noticed it, but they all have it. It's a steel insert to make the thread interface more durable, I guess.
I tried to remove it from an old Chorus 11sp FD that I have lying around. But it seems to be pressed in.
Also, there seems to be no spare part no. for this bit (see the attached pic).
So I think it's safe to say that this insert is not intended to be removed/replaced. The guy has probably permanently ruined your brand new FD.
If you mean the threaded hole that is used to attach the FD to the frame's FD mount - there's no helicoil in there. Those threads are cut directly into the aluminium of the FD. If he stripped those, then the FD is trashed as well, I guess.
The limit screws are also threaded directly into the FD. They use little springs which help keeping them in position once they're set up correctly. Those are sold as a complete set - two screws plus the springs.
Hope this helps. Your build is turning into a proper odyssee. Hope you're going to finish the bike soon.