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Thread: Seatpost shim

  1. #1
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    Seatpost shim

    Dear all, does anyone have a good link as to where I can find
    a seat post shim that allows me to fit 34mm seat post to a 35mm hole?
    Thanks.

    Andy

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    If you are cheap try tape. Not sure if mailing, duct or metalized is best. A good LBS should have a nice collection of shims.

    Cut up inner tube perhaps.

    Try an internet search. Places that sell Thudbuster seatposts have allot of shims.
    2000 Montague CX, I do not recommend it, but still ride it.
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    Senior Member caotropheus's Avatar
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    Try a coke or beer can. Cut it with scissors and make a shim.

  4. #4
    Raleigh20 PugFixie, Merc LittlePixel's Avatar
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    Yes a coil of tin from a coffee can or pop can is going to be a lot better than tape

  5. #5
    jur
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    He is looking for a shim of up to 0.5mm thick. Pop cans are 0.1mm thick, so impractical. I don't think you are going to find a shim easily or at all.

    There is a chance that the shim on this page is right for you.
    My folding bike photo essays www.dekter.net/

  6. #6
    Raleigh20 PugFixie, Merc LittlePixel's Avatar
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    I've found (I had to make a shim of about .8 of a mm when some idiot stole my irreplaceable french Peugeot seatpost) that thicker cans - l used an Illy coffee tin - can be used for shimming, and if need be you can use it in a coil so there is more than one layer of shim to make up the shortfall. Obviously this is far from ideal but needs must sometimes when a seatpost cannot be found on your own continent...

  7. #7
    Senior Member donlab's Avatar
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    Here - any size you want:

    Spark plug feeler gauge:
    http://www.reluctantmechanic.com/usi...ness_gauge.php

    You can get them at any local auto parts store. Just break off what you need.

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    Thanks all for your reply. I may head down to a HW store or a hobby shop to see if I can
    make one myself. So far the closest is the shim by Dahon sold by gaerlan.com. but it's not
    exactly the size.

    Andy

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    Andy, I'm not sure which part, the seat or the post, you want to shim. The post is more problematic due to the length of shim surface as well as the problem specific to folders -the need to often remove or slide the post. Either way, aluminum gutter, available at big box Loews or Home Depot (in U.S.) is approx .500 mm thick and an elbow, for a few dollars, could provide the lenght and width needed. If you are shimming the post, you might pattern some bend-over tabs at the top which could provide a flange to tape to the top of the bike post to help stabilize the shim against frequent adjustment.

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