The Evolution Engines Alpha 61 three blade propeller was designed to fly at slow speed while maintaining excellent thrust for climb and aerobatic maneuvers. Engine sizes from 50 to 61 are comfortable with the 12x4 three-blade propeller. You will find that the top speed of your model will be controlled within the 52 to 70 mph range. Of course this is very practical for training purposes however the high thrust at low speed is perfect for current 3D flying in models designed for maneuvers at slow speed.Alpha 60 3-Blade Prop Features:Alpha 60 3-Blade Prop Specifications:
- Material: Plastic
- Number of Blades: 3 Blade
- Propeller Size: 12 x 4
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