ORIGINAL: dave de
.....I think I read somewhere to ignore the manual cg recommendations & go 5 1/4 for CG.....
What is the manual CG recommendation?
With 20" at the root, 10" at the tip, and symmetrical tapering, 5-1/4" seems not to be reasonable.
20" + 10" / 2 = 15" MAC
0.25 x 15 = 3.75"
3.75 + (20 - 10)/2 = 8.75" measured at the root back from the LE.
That is just a rough calculation; let's see what the calculator says.
The wing span should not be 32-3/4" but bigger.