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Old 07-18-07, 12:55 AM   #1
andrewte
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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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Old 07-18-07, 08:30 AM   #2
geo8rge
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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.
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Old 07-18-07, 08:54 AM   #3
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Try a coke or beer can. Cut it with scissors and make a shim.
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Old 07-18-07, 10:46 AM   #4
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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
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Old 07-18-07, 05:34 PM   #5
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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.
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Old 07-18-07, 05:41 PM   #6
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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...
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Old 07-25-07, 11:18 PM   #7
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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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Old 07-26-07, 02:14 AM   #8
andrewte
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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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Old 07-27-07, 08:24 AM   #9
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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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