Per evac34: The fan hole is bigger than the shaft on the pump. Drilling won't make it smaller. Maybe that's too much minutiae.

I do believe we have got the basics down on motor swaps. All the terminology everybody wants to use.

All we need to do now is figure out what evac34 needs to do.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn