Key tips you should know for making the leap into the world of watts. A power meter is a device fitted to a bike that measures the power output of the rider. Most commonly, power meters use strain ...
Kt = Torque constant, Nm / Ia (Newton-Meter per Armature current) R = Motor winding resistance, Ohms Torque constant, defined by motor torque divided by armature current. Kt = T / Ia Now the question.