Quote Originally Posted by keastman View Post
I've got another pump motor question. My Super Pump II has a 2 hp motor with a sf of 1. I've found a 2 speed 1 1/2 hp motor with a sf of 1.3. If I calculated correctly that's a hp of 1.95. Would that be a near equivalent of my present 2 hp motor, or am I not understanding the sf comparison?
Yes, it is pretty close and would probably work ok since it is so close. One thing to look at is the max amps rating of both motors to see if that is close as well. Manufactures build in some margin into the label ratings so there is a little bit of head room but you don't want to push that too far or the motor will overheat. You would be better off getting a motor that is slightly too large than one that is too small.

As for the two speed motors with timer, personally, I would not think the timer on the motor would be all that convenient but that is your choice. But my biggest concern would be reliability. Emerson was not known for producing high quality motors and their motors usually end up on low end pumps. But it is a great price and it might be worth the risk.

One more link to read:

http://www.usmotors.com/Our-Products...ECALL0001.ashx