Originally Posted by
Roelof
The KV value is nothing more than the RPM divided by the voltage.
The back EMF could be measured by setting up the motor as a generator with a load powered by another motor.
Umm, do you have me on ignore or did you not see my post with the experiment I setup. I did exactly what you said.
And again, from the research I have done, Kv is measure from the rpm / bemf. Generically it is given as rpm / supply voltage because that is easier to find and for the most part close enough. Back emf shouldn't be too much lower than the supply.