9/5/09: Plafit Rabbit, Pointer, Cheetah II RPM and torque from Professor Motor added. The tach reads the RPM by shining a red light on a spinning disc on the motor shaft. 2/6/09: Ninco NC9 "Sparker" and 1/28 XLOT motor added. https://Xn--72Cz9Dvb1Cxc.com/