The brushless motor is special one for the electirc helicopter 450 class, it has the best performance for 3D .
It will be your the 450 calss helicopter.
No. From cells: 3-4x -
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 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