Bicycle Mechanics - Clamp on front derailleur fit

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bandregg

02-18-06, 11:11 AM

I have a 2001 Litespeed Tuscany that is preported to have a 31.8mm seat tube for a clamp on derailleur. I also have a 31.8mm clamp on Campy Record derailleur. I haven't forced it yet, but the derailleur clamp seems too small. is the answer just to get a longer bolt to go through the clamp? Has anyone delt with this problem before and what was the solution.

Cheers,

bandregg

02-18-06, 11:47 AM

I'll answer my own question here. It appears that Litespeed gave me bad information, and the clamp should be 35mm.

HillRider

02-18-06, 05:34 PM

Right, the clamp should be 1-3/8" (34.9 mm usually rounded to 35 mm) diameter. Most Litespeed frames have used that diameter seat tube for a long time. My '96 Catalyst (predecessor to the Tuscany) uses a 35 mm derailleur clamp.