cone for pusher modified Graupner propeller holder

I had this Graupner propeller holder that I modified a lot, removing the cone, and cutting out everything not necessary to maintain the blades on the motor shaft. Also the holder shaft was shortened too.

Made this cone to fit a pusher position on a SkySurfer X8. It covers the holder and reaches the motor body to make a smooth aerodynamical compound.

EDIT 2 Feb 2019 :
The folding prop may be folding down too much at low speed, giving a hard time to the motor balance when starting up again.