Re: [CR]Trimming a steer tube - need help

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Date: Tue, 19 Feb 2008 08:23:59 -0600
Organization: The Crimson Permanent Assurance
Subject: Re: [CR]Trimming a steer tube - need help
References: <W884001174694751203389280@webmail37>
From: John Thompson <>

Scott Edrington wrote:
> Any guidance on trimming a steer tube?
> I have a NOS frame that I installed a headset on today and now need to sh
> orten the steer tube by ~ 1/2 inch.

To do this properly you'll need to remove the fork from the frame. Mark point you need to trim and take a couple old threaded cups to use as a saw guide. Thread one down just past the trim point and the other just above the trim point, leaving just enough space for the saw blade.
> Also, I have a headset spacer that requires the steer tube to have a flat
> spot milled into it. I hate to grind out the flat spot in the spacer sin
> ce it is a rare headset and would like to keep it as original as possible

After you've trimmed the steer tube, take a flat file to the back of the tube to create the flat you need.


-John Thompson (
Appleton WI USA