Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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A clamp that is slightly larger in curvature is OK, and will generally conform nicely as tightened. But an undersized clamp can be a problem and can gouge into a carbon frame if not spread open first.
It can also make a difference whether it's the front of back half. Many FDs have far stiffer back halves to the clamp, and these won't flex down as nicely as the front half. Over-tightening mis-kmatched clamp (even to torque spec) can ovalize and crack a carbon seat tube, so use care, and don't just blindly torque to spec.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
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