Triple front mechs are deeper “top to bottom” than are doubles, so as to cope with the increased disparity in chainring sizes.
Campag currently don’t make a triple front mech in anything other than 11s format which dosen’t play very well with anything other than it’s intended shifters / chainset / chain … so really, a bit more info would be handy …
What’s the FD fitting (clamp on or braze on, and if it’s clamp on, whats the diameter of the seat tube?
What are the chainring sizes on the chainset?
How old is the chainset?
What levers are fitted
How many sprockets at the back?
Given that info, we can probably make arecommendation about something that will work for you and how to go about finding it – it may be Campag, we may end up having to look at a mixed marriage 🙂
HTH
Graeme
Velotech Cycling Ltd
Campagnolo Mian UK Service Centre