- This outrunner motor is mainly designed for micro size helicopters, such as Walkera V120D01, D02, D03, D05 4G6, 4G3, etc. with 14t or 16t pinion.

For maximum life, please ensure that the bearings are maintained properly; put a small drop of bearing oil on each bearing every 5 flights.  And please make sure that a sufficient gap is left between the pinion and main gear during motor installation to avoid binding and causing over load to the motor.