Propellers for Radio Controlled Boats

The brands Raboesch and Graupner do not qualify left hand and right hand in the same way.

Raboesch propellers are made according to international standard, right hand means turning the propeller clockwise when looking the bow.

At Graupner, right hand means turning the propeller anti-clockwise when looking the bow.

The thread of the propeller hub is always in right-hand pitch.

Pitch is defined as "the distance a propeller would move in one revolution if it were moving through a soft solid, like a screw through wood."