I am trying to design an electric motor and calculating how much electrical power it consumes is easy. Trying to figure out the horsepower it produces on paper is not. I can calculate the torque of the motor, but in order to calculate horsepower I need the RPM. Does anyone know how I can figure out the RPM on paper? I imagine that I would need to come up with an imaginary load..? I am confused by this one. I can't find the math for it.