Lee, thanks for that information. Mr. Ikeda is wondering what went wrong with his model. It climbed far too much and was very difficult to turn. The balance seemed about right. I believe the wing incidence (for the non-scale undercambered airfoil) was set at 2.5 degrees. I don't know about the elevator. He was using an unusual set up on the elevator which VG was calling "ailevator" or "taileron" (as used on some small ducted fan jet models). It seems to me that a better setup would be to put the wings at either 1 or zero degrees and set the elevator up as a normal elevator and use rudder for turns. It looks like it has a good sized rudder.

What would you all recommend to Mr. Ikeda?