The brushless motor is special one for the electirc helicopter 450 class, it has the best performance for 3D flying.
It will be your the 450 calss helicopter.
No. From cells: 3-4x Li-
RPM / V: 4000
Max.efficiency current: 8-10.5 ONE (more than the 75%)
No load current / 10 V: 0.5 ON
Current capacity: 40 A / 60 s
Recomended model weight: 450 class Ele. Heli.
Recomended prop without gear: 6 inch-8 inch
Colour:Green
Material:metal
Size:Shaft diameter: 3.17mm
Dimensions: 31x29mm
Package Contents:
1 * motor