- How do I shim a loose crown race
I’ve done it before (the proper way).
Build up the diameter with brass (brazing rod and gas torch). Then find someone with a decent size lathe. Hold steerer in the chuck and recut the seat. Silver solder would also work but runnier so harder to build up (and more expensive). I wouldn’t bother with soft solder.
Loctite bearing retainer isn’t going to fix it a 1mm diameter difference.Posted 3 months agosmiffyMember
Just a thought, have you built it up and checked that there’s a problem when it’s pre-loaded? That play in the fork and original crown race might have always been there and nobody ever noticed until it was disassembled? Punch is a good shout otherwise but if used in anger the dimples might get hammered out in time.Posted 3 months agoLionheartMember
The Locktite 660 will fill a surprising gap, spec is .5mm but we’ve seen more very successfully done but it’s expensive. I’d definitely try the coke can shim, you be amazed how well that has adequately bodged race cars, race bikes and even aeroplanes around the world.Posted 3 months ago
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