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Wheel bearing pre-load

Posted: Wed Jun 17, 2015 11:22 pm
by Bulnorth
My F1 tube frame sidecar with front forks and rear swingarm has angular contact ball bearings with no spacer between them in the front and rear wheels. I have several questions. Should there be a spacer? How is the axle tightened to give the bearings the correct pre-load? Is there any reason this type of bearing is fitted instead of tapered roller bearings as in the chair wheel?