Seat post shims

blorg
blorg Posts: 1,169
edited April 2008 in Workshop
My new bike (Focus Cayo) takes a 31.6mm diameter seatpost. Are there any significant disadvantages to using a shim to get this down to 27.2mm? (Which I have on all my other bikes.) Planning on changing the seatpost for one with less layback.

Comments

  • pete.whelan
    pete.whelan Posts: 788
    No problem with using good quality shims. USE do good ones.

    I've got a new, unused 31.6 Thomson Elite seatpost with zero layback for sale if you were interested £40 plus a bit for Post
    Recipe: shave legs sparingly, rub in embrocation and drizzle with freshly squeezed baby oil.
  • blorg
    blorg Posts: 1,169
    Thanks for that Pete. May be interested in the seatpost; still trying to decide whether the frame actually fits. I'm feeling a bit stretched.

    Idea with 27.2 would just to go with the same size as my existing tourer and commuter, to promote interchangability.
  • neeb
    neeb Posts: 4,473
    My bike came with a thin plastic shim which fits precisely and seamlessly into the end of seat tube. I think it actually prevents damage to the carbon seat post and stops it slipping - the plastic has more grip and is softer than the surface of the seat tube itself would be.

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