Re: [CR]27.2 seatpost in 27.4 diameter seat tube

Example: Component Manufacturers
Date: Thu, 28 Feb 2002 10:14:38 -0500
From: "Steve Freides" <>
Organization: Friday's Computer
Subject: Re: [CR]27.2 seatpost in 27.4 diameter seat tube
References: <>

David Bilenkey wrote:
> Pop cans are usually 0.1 mm thick (at least the ones I've used as shims
> are). Grab a can and cut it open with a pair of scissors (drink the pop
> first!) and try it.

What he said!

You may find you have to play around with the size of the shim, not in terms of thickness (which you can't control) but in terms of how much of the circle you attempt to fill with your shim. I'd try something that goes almost but not quite completely around the seatpost. If that makes too tight a fit, then shorten your shim a bit and try again. 0.2mm is quite close already and that could make this a bit gnarly.

I've also found it helpful to bend down the edges of the shim to keep it from disappearing into the seat tube.


> David Bilenkey
> Ottawa, Ontario, Canada
> -----Original Message-----
> From:
> []On Behalf Of Robert White
> Sent: February 28, 2002 9:22 AM
> To:
> Subject: [CR]27.2 seatpost in 27.4 diameter seat tube
> Hello All,
> Anyone know of a thin shim or have recommendations
> (other than cranking down the binder bolt) for using
> a 27.2 seatpost in a frame built for 27.4?
> Thanks for any help,
> Rob White
> Chicago, IL