• I need a seat clamp of unusual size.

    GF's Chinese carbon 29er has a 31.6mm post. It's had a PZ Racing 34.9mm clamp for about 3 years but the threads on the bolt have failed. I measured the clamping surface again to check as I suspected the clamp was close to bottoming out.

    The clamping surface has a diameter of 34.5mm, 12mm tall.

    I've only found one option better than another 34.9mm-nomimal clamp, that being Miche's clamp on which is engraved "D34,6-35". I've never seen another clamp quoting a range, so this pleases me, but not as much as if the range covered the diameter I have.

    Any suggestions?

  • Any suggestions?

    Get a 34.9 in a #tester_approved pattern and some 0.2mm/0.008" shim stock. This is literally the best place on a bike to use a cylindrical shim, since it has no loads to take except the radial compression

About

Avatar for gbj_tester @gbj_tester started