That threaded bit is a bearing pre-loader, not a spacer. Its to make sure there's the right amount of side-load on the bearings, Too much and it fucks the bearings, too little and it wobbles about.
@turnpedal started
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That threaded bit is a bearing pre-loader, not a spacer. Its to make sure there's the right amount of side-load on the bearings, Too much and it fucks the bearings, too little and it wobbles about.