Originally Posted by
hueyhoolihan
...the reamed cup would need to be a tight sliding fit.
i don't see why anything like a compression ring would be necessary. the stem will be in contact with the upper adjustable cup, which in turn will be in contact with the bearings just as it should.
True, get a good enough fit and the steerer will stay centered and not slop around w/o the compression ring.
The purpose of the ring is to cover for production tolerances and to center the steerer. Which is doable through other means, if you put the effort in.