Join Date: Jul 2005
Location: Backwoods of Ontario
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Handlebar Clamping Problem
Just bought a used road bike, it has a Cinelli quill stem, 26mm clamp diameter
and a BBB bar, don't know exactly which, but it's alloy. The only bars I see on the BBB site are 26mm or oversize. I removed the bars to unjam the stem and adjust the height but now I can't seem to adequately tighten the clamp to stop the bars rotating in the clamp.
I measured the clamp area of the bar with calipers and came up with various measurements in the 25.7mm to 25.8mm range, but it definitely had 26 in the factory markings.
Should I shim the bar to get it to clamp properly, or is there some other trick.