front deraileur clamp size

[shankldu]

i have a stevens vapor aluminum c cross frame that takes a 27.2 seat post , any ideas on the clamp size in need on the front diameter i need i cant find it even on mfs site. thanks

[ultraman6970]

Probably is 32 mm. Dont remember seen (doesnt mean there's none) a 27.2 seat tube aluminum bike with a 50 cal cannon as a seat tube that could take 35 clamps.

[druptight]

Don't guess - wrap a piece of paper around it, then measure it.

[nooneline]

Don't guess - wrap a piece of paper around it, then measure it.

that'll give you the circumference. divide by pi and that'll give you your diameter.

[druptight]

that'll give you the circumference. divide by pi and that'll give you your diameter.

Right! What I get for responding too quickly at work. Still better than guessing!

[Vinci]

Probably is 32 mm. Dont remember seen (doesnt mean there's none) a 27.2 seat tube aluminum bike with a 50 cal cannon as a seat tube that could take 35 clamps.
CAAD9's are 27.2 and 34.9. So is my Litespeed, though that's titanium.

I assumed the same as you and have the erroneously-purchased derailleur to prove it. :(