RE: Need airfoil advice
Bob,
As for the type of flying, I'm really doing this to satisfy my curiousity for a) de Havilland airplanes, and b) a first twin. I'm hoping for a mid-performance airplane, that has reasonable landing speeds. As for the rest, that's part of the fun: let's see how this works!
I'm buying sport engines (Norvel Big Migs).
The taper looked too severe for me, so I did change it, and it still looks okay. It tapers from 13.5" at the root to 5.5" at the tip. The total wingspan is 54. I get just over 500 sq ins. I think I can get it under 72 ozs, so around 20ozs/ft2. I'm drilling holes everywhere.
I think a 1/4" washout is the way I'll go. Another possibility would be to use the Selig 8037 at the tip, but because I use a rudimentary drawing program, I'm not confident I can taper to that smoothly.
I'm already cutting balsa, so if you're interested, I'll keep you posted.
L