Variable Pitch Propellers set V2.5

#v2.4:
Improved version of variable pitch propeller set:

Some improvements to the rotor holder and the thing that changes the pitch (pitcher i call it)

Testing them now (being printed ... really some mushrooms grow faster that 3D printed parts)

This design allows you to have the main shaft fixed from the top and the bottom (better use metal joints as ABS will melt on high RPM (even on 1000) ... will post photos after full assembly

v2.5:
- Improved rotor holder (print separated with no supports at all)
- improved 'pitcher'
' longer shaft for support from top