I agree Pat, these things are wicked. I put a hand held tach on it tonight and the tach goes to 3500 and it passed it up by 500 rpms, so I guess it runs at 4000! I did play with the belt adjustment trying to get it to track straight, but the problem is, when you first start the motor the belt goes to the left, then as the motor speeds up it goes to the right. I watched it spin, and the bottom drum tracks straight, but the top one wobbles a little. I pulled the bearings out and they seem to have some slop, so I am going to hit the bearing house and replace them.

If that doesn't do it, I am going to have the top drum trued up on a lathe, but I can't see how a steel drum would have gotten deformed. We've pretty much decided to concentrate on getting the belt portion working and forget the disc part. We already have one 12 inch disc sander that runs at a sane speed, so we will continue to use that one.

Don