X5 Steel Pinion Gear Pack (15T- for 5.0mm shaft)

Gear Ratio
13T Steel Pinion Gear (E.M.T) 9.2 : 1 : 4.07 = 2195 rpm
14T Steel Pinion Gear (E.M.T) 8.6 : 1 : 4.07 = 2349 rpm
15T Steel Pinion Gear (E.M.T) 8 : 1 : 4.07 = 2525 rpm
16T Steel Pinion Gear (E.M.T) 7.5 : 1 : 4.07 = 2693 rpm
Tail rotor speed: 10960 rpm
Important: The gear ratio, motor and battery should be set properly if the power system has been changed!!!