Toy Air Turbine (LEGO Compatible)

prusaprinters

My son and I have been working on this model for a while now.  We've finally gotten the dimensions very good for connecting with Lego® Technics parts.They run pretty smooth by blowing in the funnel or connecting a balloon.  Our ultimate goal is a balloon powered car or boat.   We're not quite there with the torque yet.  Suggestions for improvement are welcome!It's an OpenSCAD model so tweak the geometry to your heart's content…