30mm Turbo Spinner for 4 mm Shaft

These spinners have a hole in the front that lets air enter through the nose of the plane — a great way to cool the electric motor instead of using a fuselage air scoop.

Included: turned aluminum spinner, middlepart yoke, screws for prop blades, and collet type motor shaft adapter.

The width between the arms of the prop yoke is 8mm. AeroNaut and Graupner folding propeller blades have 8mm wide hubs.