That's almost exactly what I thought also, fatter more forward airfoil for better 3-d.

I also found this one that's from a Cap 21, 15.59%@15.7%

The first one was a 12% Joukowski. All these I found with Profili 2.
So using the fatter more forward theory the cap 21 would be an even better airfoil?
Maybe I should make 2 sets of wings with these 2 airfoils and see which one flies best.


Thanks guy's.

Kelvin.