Gyroplane Rotor Head

I used to fly and instruct in gyrogliders (gyroplanes towed behind a car). As an instructor I always found it difficult to teach rotor craft theory as it is quite abstract. I eventually rigged together out of rivets, balsa, glue and washers a primitive model gyro with teetering rotors which worked well enough but have finally gotten around to making a system in the 3D printer which I plan to use with my science students. I have also made a rotor profile sanding block from an N8H12 profile which allows you to sand the rotors into a consistent profile.

In your science classes you can bolt on different rotors lengths (sanded out of balsa wood), different chord (width) rotors and different profiles I have 3 I'm taking from proper rotor designs of autogyros. I will eventually add a rotor hub design which can change pitch also. If using for teaching I suggest obviously windy conditions, eyeglasses, and measuring lift with spring scales.

The head is designed to slide over wooden