Dualsky CRS4000.10 Contra Rotating 12S Brushless Motor for 40-60cc Models

Not held in store, ordered as required

This is the groundbreaking 4,000-watt-class contra rotating system by Dualsky for 40-60cc aerobatic and scale model aircraft.

For 40CC to 60CC aerobatics and scale model aircrafts
Nearly zero propeller reverse torque makes airplane run straight when taking off
When using a pair of 24-inch propellers, the maximum thrust is about 15KGf, but with lower power consumption (compared with the GA4000)
The incredible uniform speed effect can be achieved in the descent/dive route
Power comes from a specially developed 4,000W High-RPM outrunner motor
CNC made pulley and inclined gears quiet operation
CNC made gearbox bracket, strong and accurate
Over-sized ball bearing combination
Carefully deployed gear/ belt ratio, the belt tight wheel is backup use only (default no contact)
Maintenance-free design without adding lubricating oil
Belt replacement cycle is 4,000 minutes (about 500 flights)
Supports the before-firewall (front) installation for stunt model aircraft

Weight (g): 746
Dimensions of body (mm): L:96.9 x W:(front)75.2, (rear)84 x H:99.1
Diameter of Front Shaft (mm): 6
Diameter of Rear Shaft (mm): 16
Front mounting holes (mm): N/A
Rear mounting holes (mm): 70х70 Ф4.2
Nominal Voltage: 44.4V
Battery: 12S LiPo
Torque @ MAX Power (N*M): 10.4
KV of Motor (RPM/V): 490
Idle Current: (lo) @10V(A) 2.0
Resistance (Ri)(mOhm): 13.8
Peak current (A)[15s]: 95
Peak power (W)[15s]: 4180
Cruising power (W)[8 mins]: 2090
Recommended ESC: SUMMIT 120HV
Recommended Timing: Auto or 15-18 degrees
Recommended Frequency: 24KHz
Recommended Active braking: Enabled
Recommended Acceleration: Plus or Minus Soft
Propeller: (1) Front 23×20 Rear 23x22 78amps @ 44.4V, (2) Front 24x20 Rear 24x22 92amps @ 44.4V
Spinner & hubs: Spinner & front prop hub are sold separately. Sleeve maybe needed for some kinds of rear propeller
Rear stand-offs: Included 4x L60mm w/ mount board
Maintenance interval: 4000mins (Approx. 500 flights)
Weight of airplane: 6kg to 8kg
Applications: 40cc to 50cc scale or freestyle airplanes, IMAC training airplanes