The Plett website now shows a spinner assembly for the 30-10 which addresses the cooling issue. The motor mounts in the spinner which has a hole in front to allow cooling air in. A clamp on hub assembly at the rear of the motor can takes folding prop blades.

http://www.plettenberg-motoren.com/z...zusatzxtra.htm

Is this the new motor you are talking about Chad? What blades would one use with it? Apart from the folding blade deal this arrangement looks perfect from a cooling and CG point of view. As Plett say, the prop mounted on the rear of the motor can will also help with vibration issues caused by a lot of overhang from the bearings to the prop.

Malcolm H