RE: Can You Identify This Profile 3D Plane??
OK, figured out that MAC (thanks to John Buckner) is the percentage of root chord at the desired spot the plane will balance at. I figured 25% using the calculator graciously posted and it gave me: 4.75" and at 30% it gave 5.56 and at 33% it gave 6.05.
Using the averaging method posted by Mr. Buckner it gave me 4.1" so very much inline with the calculator.
Only variable is that the wing tip is not straight at the tip but rounded and increases in distance at the midway point (between the tip chord) So I did the best I could with very limited knowledge and experience.
The CG is currently set at 4.5" so I think I'll bring it back a little bit more and see how Ilike it. 4.5 just seems awfully far forward on a wing that has a root chord of 19"
root chord: 19"
tip chord 13"
sweep distance 1.5
half span 22.5
%MAC balance point: 25%
balance point at root chord: 4.75