Originally Posted by Rktman

Seems logical...but I guess math formulas must have a logic all their own. Doubling the platform and dividing by 2 gives me a wing aerodynamic center of 1/8" back from the LE. Way off.

So odd that with all the elliptical winged BGs and RGs and model planes that have been designed, there is no calculator that will take elliptical tip chords into account, on square tip chords.