PackardV8
Hot Rolled
- Joined
- Jun 4, 2006
- Location
- Spokane, WA
The best motor minds on the net weigh in here, so help me with an answer in small words. I'm helping a friend re-power an air compressor. It has a HP/RPM/CFM chart for 3/4 to 1-1/2 horsepower motors. We have two 6.1 amp TFEC motors. One is a very heavy duty all-cast-iron 1140 RPM 3/4hp rating and the other is a medium duty 3450 1hp rating. The 1hp 3450 is a drop-in mount, using the existing 3.3" pulley. The physically larger and heavier 3/4hp will need an 8"-9" pulley with a 7/8" bore and a new belt, which are expensive additional costs.
Naturally, the heavier motor would be our preference, but is there any real reason to spend the money? Would we notice any real performance or longevity difference? Any advantage to one RPM over the other?
thnx, jack vines
Naturally, the heavier motor would be our preference, but is there any real reason to spend the money? Would we notice any real performance or longevity difference? Any advantage to one RPM over the other?
thnx, jack vines