9/5/09: Plafit Rabbit, Pointer, Cheetah II RPM and torque from Professor Motor added. The tach reads the RPM by shining a red mild on a spinning disc on the motor shaft. 2/6/09: Ninco NC9 "Sparker" and 1/28 XLOT motor added. http://venuesphilippines.com/__media__/js/netsoltrademark.php?d=Bestbuykub.com