I picked up a 74’ PM 66 with a 3phase & 3 hp motor model 35A13-863. A new, 3hp single phase baldor motor is $385 plus another $20 or so for the switch (internet prices).
The other consideration is a vfd and I believe Teco runs about $300, plus a switch if needed.
My initial thoughts are that it’s going to be easier swapping out the 3 phase motor for the the single phase plus a new switch.
Thoughts?