Torque and Chrome

alternator torque query?

take an average a 24v alternator, can anyone tell me what the minimum alternator pully wheel rpm (revolutions per minute) would need to be for a constant power supply to be generated? I also need to find out what approximate torque is required to turn the pully - expressed in pounds per sq inch as per a torque wrench.

Public Comments

1. YEAH 24 VOLTS ON TOP[ 220 TO ASK YOU TO HO,LD ON GENUIUS
2. You are omitting several details. Alternators work on average from 1500 rpm's and up. Ideal is probably 3500 rpm's. As for torque, just directly convert wattage (which you did not give) to torque. Example: 1000W=1.341 horsepower=737 foot pound-force/second The alternators voltage is not important, the wattage is. A constant power supply could be generated at any speed but how much power do you want? The more power generated, the more torque/second required.
3. The Delco Remy 33SI alternator reaches it's rated 24V/100A at around 5,000 RPMs (nominal regulated voltage is 27.5V.) As for torque I assume you mean the torque to turn the pulley nut which is 75 lb. ft. The Alternator shaft itself (and the pulley attached to it) should spin freely although belt tension and engine compression can make it harder to turn.