The shims are usually used to put a 31.8 derailleur on a 28.6 seat tube.
(or a 28.6 derailleur onto a French 28.0 seat tube) Some manufacturers
include shims with the derailleur. I used a cut down handlebar shim (26 -
25.4) to put a Campagnolo derailleur on a Gitane.
Laing
Cocoa, FL
On Wednesday, March 27, 2019 at 8:27:20 AM UTC-4, jandrews wrote:
> Hi
> I often see some bits of aluminum underneath the front derailleur clamp
> to presumably act as a soft shim to keep the seat tube from being
> crimped due to over tightening of the clamp?.
> I crimped a seat tube before in the past and want to avoid that on my new
> Appaloosa build.
> where does one find this stuff? Is it a tape? or just strips of aluminum
> that are cut to fit in the clamp?
> Thanks
>
>
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