This is the Evolution Power System Propeller: A. The Evolution Engines Power System Propeller was designed to fly at slow speed while maintaining excellent thrust for climb and aerobatic maneuvers. Engine sizes from 36 to 46 are comfortable with the 10.5x4 three blade propeller. You will find that t...

This is the Evolution Power System Propeller: A. The Evolution Engines Power System Propeller was designed to fly at slow speed while maintaining excellent thrust for climb and aerobatic maneuvers. Engine sizes from 60 to 90 are comfortable with the 12x4 three blade propeller. You will find that the...

Since the release of the Evolution® 10GX small-block engine, countless modelers have discovered the benefits of gas power in aircraft formerly dominated by the .40-size glow engines. But what about the pilots who enjoy even larger airplanes in the .61- to .91-size range? Bring the fuel efficiency ...