[Kevin Sevcik]

Sorry, detained for the weekend. That kind of thing will work, but I'm not 100% sure the size for the NDB trannies will work for those trannies. But you should certainly be able to get some clamps like that that are the proper size once you measure the diameter on the hammerdrill.

As for mounting, etc. I still don't think you'll be able to get a direct drive to work. I think you'll want to get atleast one of those in hand or find one at a Home Depot or tool store and make sure that if you put them back-to-back that they'll still fit on your base.

That said, if you're bound and determined, you could drill and tap the end of a shaft, lock-tite it onto the spindle, drill it and roll pin it, and maybe even weld it to the spindle as well for good measure.

Yes, I'm serious. This thing is going to put out a lot of torque, and I think welding might be your only chance of getting a direct shaft connection that can handle it. The problem is that your direct shaft means you can't use the left-handed screw to efficiently hold something down and keep it from unthreading. Atleast I don't see any easy way.