That is if you ride a traditional steel frame, Campagnolo doesn't care about you. Why would I say such a thing about the beloved and legendary components manufacturer? They don't make a 27.2mm size front derailleur clamp is why. I assume this is a business decision. Maybe they've concluded there is not enough demand. That's too bad; for us that is. I know there are some out there on the used market, but I don't want used and I don't want an older design. I want a current design that compliments the other current Campy components. So then I am forced to choose the 32mm clamp and make do. Thank you Campagnolo. I mean that with both sincerity and sarcasm. As seen in the above photo I have inserted a shim to adapt the larger clamp to the smaller seat tube.
I made the shim with two layers of rubber strips. One would suffice depending on the thickness of the rubber. In my case I had two sizes of rubber shims from a head lamp clamp. The thicker of the two was too large but by doubling up the thinner option it was just right. I cut the thin shim into two strips and they were the perfect width to match that of the clamp. Only a little finesse was required to position the strips neatly between the clamp and seat tube. Voila, the clamp is in place.
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