Drive setwithout motor and controllerfor electromechanics Ord.No. 1002/80 and 1002/82with 1880 mm rotor diameter/multi-bladeFor 10S LiPos with approx. 5800mAhTotal gear ratio mechanics and drive set:1st stage (Ord.No. 870/84:128/28): 84:28 = 32nd stage (Ord.No. 830/90:830/18): 90:18 = 5Total gear ratio: 3*5 = 15