For me, I'm going with a simple explanation that given such a small addition of fuselage side area and the aspect ratio of the fin, that it is basically straightening out some of the prop flow before it hits the tail and that is helping the plane. It would be great to wind tunnel test it to know for sure, but I'm just as happy to be ignorant of the exact cause and be happy with the measureable, noticeable effect.
Thanks,
Jim W.
- yes I have an aerospace engineering degree, ERAU 1996 Prescott, AZ


Great explaination Jim,...I have yet to experiment with it myself. Pehaps thats why those guys (CPLR, Akiaba, QQ, etc) are the pioneers that continue to refine and evolve these machines and the sport. Thank you very much for your input!

Bill H.
"Kick the tires and lite the fires and away we go!"