I use a 7.5HP rotary phase converter to run my 2HP Sheldon Lathe. I was taking a medium cut in some 1020 steel in backgear and after a couple of passes it seemed that the lathe was losing power. I opened the cabinet up and the motor was very hot. If I disengaged the power feed and retracted the tool the lathe would come back up to speed.
The motor is the original and it is wired properly at 220v.
Is it possible that the converter not being balanced or tuned is causing this power loss. Bob Swinney sent me an article on balancing so it will not be a problem to do so as I have ordered some run capacitors.
I do not have the voltages right now on the 3 legs. Should I measure these with the lathe running with no load?
Thanks, Steve