bdavison

In the interest of those here who DO understand ------ my apologies for the noisy interlude. It wasn't intended to provoke it----but the FACTS are there for every one to see.

BTW the thickness of an airfoil has everything to do with the lift drag ratio but little to with lift itself.

If you can structurally sustain a 1/4" flat plate and keep it from bending and twisting it will do very well as a wing------including aerobatics.

As far as flat stabs------full scale Lasers, all Pitts, Challengers I, II and III, Skybolt as well as virtually all bipes use them-------those aren't exactly losers.

NOT having compared a KF III to any current design I hardly would place it in contention with them.
AND as far as being stuck in antiquity, well, ----- A Focus II is NOT really new----but neither is it a dog.
The Black Magic will hopefully be ready before summer is over---- then we'll be totally up to date-----BUT, I can't do much about the years I've piled up other than to say I can still compete and even I find that amazing. :-)