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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It depends on whether your collar has a lip covering the top of the seat tube. If so, you have no choice but to put the shim on first.
Likewise if the shim has a lip which extends beyond the OD of the seat tube which would then need to be above the collar. (lips on shims that large are rare, but it's something to check)
If the presence of a lip on the shim or the collar doesn't dictate which way it needs to be, feel free to please yourself.
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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