Originally Posted by
Bob Barker
Usually the tube is 34.9 and then you would add the paint thickness (twice) to get your [actual] mic'd 35.2-35.5. Is this frame Ti or otherwise bare?
Even if it's bare Ti, the fd shouldn't slip. I have three bare Ti Litespeed frames that all take 34.9 mm derailleur clamps and none has ever had the front derailleur slip. I've used integral clamp and braze-on adapter clamps by both Shimano and Campy and had no problems with any configuration.