Hello

2 bladed teeter head system do not work for model autogyro's worth a tinkers toot. Why do you think we are not using them...???

We have poured tons of reaserach into this during the early days of model autogyro's. Now if you use a sub wing then you will get something that fly's but not until then. This is used for roll dampening.

Not wanting to argue with you but if you have something that fly's using a 2 blade teeter head with no sub wing other than a control line model that uses centrifical force to keep it flying then please post a in flight pic of it.

The models shown on the above links use a flapping blade system which illiminates the dreaded dissymetry of lift problem. These work but are not as stable as a 3 blade system.

BTW nearly all of our research was done at the University of Wisconsin's wind tunnel by Dr. Bill Friedlander and Dr. Lester Garber

Respectfully

Rick