turning brake drums on conventional lathe

[Standing Elk]

Curious if any of you have turned brake drums on a conventional lathe, specifically rears. If so what sort of fixture did you use to mount the drum / hub assembly in the lathe? I am assuming that you would need to have the wheel bearing in place in the hub and index from it in order to insure the inner surface of the drum would be be cut concentric to the inner bearing race on the axle. Pictures would be helpful if anyone has some. Thanks