Originally Posted by anti-gravity
Then tell me you have never used in in real life, and it makes it useless.
Sorry but i must correct you on this.. I've been designing, building and flying models for over 40 years. I've had a number of plans and kits manufactured and my designs have even won a contest or two.. I say this not to brag but to correct the point you try to make about me sitting behind a desk and spouting theory without putting it into practice.