Daniel,
Velocity makes an economy single walled rim called the Twin Hollow (but probably as good as single wall rims ever were) that you should be able to get without any trouble (36H and silver only): <http://velocityusa.com/rims/hybrid-rims.php>.
Good luck :^)
Doug Van Cleve Chandler, AZ
On 8/25/05, Mazzeo, Daniel <Daniel.Mazzeo@usap.gov> wrote:
>
> Group - does anyone have a source for 27" clincher rims either new or
> NOS?? The old Trek needs some help.
> Thanks
>
> Dan Mazzeo
> Morrison, CO