To: jerrytug
I had a friend that built a large flying model. The wings and horizontal stabilizer were polyhedral and a Co2 motor powered the model. The construction was mainly of balsa and the model was covered in tissue paper.
Prior to launch the motor was propped over and started to run. However it was running backwards. When the model was launched into the wind it rose to about ten feet and slowly started to fly backwards and slowly picking up speed. The model rose to about 100 feet and disappeared over a large stand of trees. He never found the model.
