CN Spinner with collet. Motor shaft diameter = 3 mm; Distance between the axes of the blades = 19 mm; The shockproof cone on CN Spinner with diameter 25 mm is cast in glass-nylon composite. The shape of the hub will allow to fold the blades closer to the fuselage for drag reduction when gliding. The blade tilt angle = 0. The hub and collet are made by milling of aluminum with further anodizing.