Originally Posted by
gigaplex
Problem is that you can't know torque without actually measuring it or at least knowing the rotor strength.
I have used an EMF Meter similar to this to read rotor strength:
I physically removed the rotor and slowly rotated the rotor as close to the meter and had it lock onto the max reading.
I found disparity between rotors of the same brand and learned to cherry pick the stronger rotors using the EMF Meter
Note that these cheaper EMF Meters can only read 540 sized rotors, I tried it on a 550 SCT motor and it maxed out