Compressor is an older Champion roll-around.
Tank is about 10-15 gallons, compressor is a vee-twin, old U.S.-made
I just put a new pressure switch on it, only to find the motor is bad.
That motor was not original. I believe the original motor was 115V, HP
unknown.
What should I look for in a replacement motor?
I prefer to stay with 115V.

I tried a 1 HP motor that was wired for 115V, and it was not enough -
stalled and tripped the circuit breaker.
How do I determine what HP it needs?