Seat post moving

Tashman
Tashman Posts: 3,496
edited August 2017 in MTB workshop & tech
Hi, I've recently picked up an old Giant X1200 that has a seatpost that seems to like to slip around no matter how much i tighten the QR. Any thoughts?

Comments

  • JBA
    JBA Posts: 2,852
    Wrong diameter seat post?

    Have you got an X1200 (hybrid) or ATX1200 (MTB)?
    “Life has been unfaithful
    And it all promised so so much”

    Giant Trance 2 27.5 2016 ¦ Sonder Broken Road 2021¦ Giant Revolt Advanced 2 2019 ¦ Giant Toughtroad SLR 1 2019 ¦ Giant Anthem 3 2015 ¦ Specialized Myka Comp FSR 2009
  • JGTR
    JGTR Posts: 1,404
    Carbon assembly paste, little bits of grit in the paste which stops post slipping.
  • wilberforce
    wilberforce Posts: 316
    As above suggestions but also first ensure that surfaces are clean
  • Tashman
    Tashman Posts: 3,496
    JBA wrote:
    Wrong diameter seat post?

    Have you got an X1200 (hybrid) or ATX1200 (MTB)?

    X1200 hybrid. There's also a plastic part that narrows the tube, so yes it could be that I just need to spend more than the £10 I paid for the bike and replace the post
  • The Rookie
    The Rookie Posts: 27,812
    So a plastic shim has been added to use a non original size seatpost, carbon gripper paste is pretty much a must then. Also it's possible the shim is too thin so not the correct adaption for the wrong sized post being used for the frame!
    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.

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