These brushless motors with neodymium magnets and a rotating case are manufactured using the latest technology from the finest quality materials. The hardened steel shaft supported by three ball bearings, and overall robust yet lightweight construction, ensure a long service life. A new feature in  design is a provision for radial mounting  . The optional radial mount set includes: mounting flange, propeller adaptor, securing collar, and screws. The unique design of these motors gives extremely high torque levels to turn large diameter and high pitch propellers with a high level of efficiency. This motor is suitable for large sailplanes weighing up to 4500g and sports aerobatic models up to 3000g.

For helicopters, it can be used for Quick Sweet 16, Logo, and other 30-50 size EP helicopters
 

Specification

No. Of cells : 12 - 16 , 4 - 5 Li-Poly
RPM/V : 660 RMP/V
Max. efficiency: 85%
Max. efficiency current : 20 - 40 A (>82%)
No load current / 10 V : 2ACurrent capacity : 58A/60S
Internal Resistance :41mohm
Dimensions :50x55
Shaft diameter: 6mm
Weight with cables :276g
Recommended model weight :2000 - 3500 g