Help choosing seat clamp size..

James Q
James Q Posts: 201
edited May 2013 in MTB beginners
Hey guys I want to get a new seat clamp, my post is a 31.6mm, but my clamp doesn't have a size stamped on it. I have taken some pics that might help...
20130523_140711_zpsb8571a92.jpg
20130523_140947_zpsa15abaf8.jpg

Comments

  • Greer_
    Greer_ Posts: 1,716
    Most likely 34.9mm. Rip a strip of paper off, wrap it round the outside of the seat tube and measure the circumference and divide by π. Where circumference=π x diameter
    Orbea Alma Team Carbon - Strava -Specialized Allez Sport
  • The Rookie
    The Rookie Posts: 27,814
    Measurement for the clamp is the INSIDE of the clamp or the outside of the seat tube in the frame.

    A clear plastic or steel rule work better than a tape measure - you need to alig the edge with the largest diameter to do it properly! Greer's method works best.

    Also suspect it is 34.9 which is the only stnd size that will fit.
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • Kowalski675
    Kowalski675 Posts: 4,412
    Not got a vernier?
  • James Q
    James Q Posts: 201
    No but I should get one, I've ordered a 34.9mm so fingers crossed that fits lol.
  • Kowalski675
    Kowalski675 Posts: 4,412
    You can get digital ones for pocket money these days.

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