Bicycle Mechanics - seat tube diameter

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way mars
09-03-05, 01:20 PM
what is the outside seat tube diameter of a cannondale xs800 inside is 27.2 thank you ...wayne
wetjett01
09-03-05, 01:36 PM
just add the tube material thickness twice the the ID to get the OD
way mars
09-03-05, 01:42 PM
thanks wettjett01 that would work if i new the thickness
BostonFixed
09-03-05, 01:44 PM
Why do you need to know the OD of the tube?
^^^...isn't it usually to pick correct FD clamp size?
BostonFixed
09-03-05, 01:54 PM
^^^...isn't it usually to pick correct FD clamp size?
Nice one. I didn't think of that.
Here's one way: Take some string, wrap it around the seatube, measure cirumference. Divide by 3.14 to get diameter.
Or find/buy/borrow a caliper.
Taking it to a LBS would also be very easy.
way mars
09-03-05, 02:25 PM
yes the outside of the seat tube BostonFixed and your right sydney
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