Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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Like the others I agree that given the stakes and the economics you should just go out and buy the right shim. It isn't that you couldn't build up 1/16" with soda cans, but that you need good uniformity of thickness along with flex so the stem clamp can compress the shim onto the stem.
Shims made for the job are nicely concentric, and split in the back to compress along with the stem. I simply can't imagine not buying one unless it's an emergency someplace in the outback.
In that case the best shim can be made by winding gummed carton tape (wet so the layers stick) onto an oiled steerer (so it doesn't stick) until it's built up to the right thickness. Let it dry and stabilize, then slide off and trim the length to fit within the stem, and carefully make a 1/16" slot along the length for compression.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
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Last edited by FBinNY; 03-09-11 at 11:14 AM.