Quote:
Originally Posted by Thayer McCollum
So I suppose I should have clarified. I agree that structurally the tube concept is overkill. It adds support the rail doesn't really need. We did this because we felt that just pressing the bearings into the rail would cause them to fall out easily. Is that not the case? Does 1/8" wall easily support bearings without them falling out? Because in my experience that hasn't happened. If someone could tell me how to put the bearings in without them falling out I would be happy to learn. (Because those tubes really sucked to put in...)
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For us:
1) Machine the hole just slightly undersized. Adjust it lightly when it's necessary.
2) Minimize axial slop on your axles. If your wheels can't slide back and forth on the axle, it makes it harder for it to wiggle the bearings too. (E-clips help with this.)