Powerfull Air Assist for Neje.
Fit on A40640, probably will fit alson on n A40630.
Material:
Some screws and screw inserts needed for turbine.
Dc motor 555 with app 18k rpm.
Rubber rings.
Electrician's gooseneck with inner diameter app 24mm or any other pipe.
I also cutted paper gasket and put it between turbine cover and motor mount.
Attaching svg file for it.
You can see it in action here: