Motor Velocity Constant (kV)

The relationship between torque and speed in a motor. The voltage supplied to a motor, multiplied by the motors kV constant will give you the maximum RPM the motor will reach if there is no load on the motor. For example, a 200kV motor being supplied with 10V would spin at 2000RPM. However, if a motors kV is lowered, the top speed lowers, but the torque increases proportionally. For example a 100kV motor at 10V would have half the top speed of the 200kV motor, but twice the torque.