I think you may have overlooked the 3/phase part on his post, I use 5hp 3/phase motors on hydraulic pumps that works great and a single phase 5hp motor would just grunt at. I like a 2 stage compressor that only turns about 550 rpm with a 1735 motor, that way your not spinning the guts out of the thing with a 3400 rpm motor JMHO.
