Denny, we used two methods, depending on whether the offset needed to be changed or not. I set up a front hub between centers, bearings and all, and used a bolted-on lathe dog and a faceplate to drive it. With the wheel bolted to this fixture, I'd cut off one wheel flange with a parting tool, and prepare another wheel in a similar manner. Then, with the center removed from the second wheel, I'd tack weld the two wide pieces together and check for runout. If everything ran true, we'd TIG weld the seam with the wheel assembly still in the jig. Short passes in several locations would minimize any tendency to warp.

If the offset needed to be changed, I'd remove the wheel center and fit it to another outer wheel, using the same turning fixture.
Jerry

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