Mike,

That is VERY interesting! I had never heard that one before. With that new bit of info that'll mean I'll have to push something out of my brain to make room for it. Ha-ha-ha! But seriously I do appreciate the info. I'll have to apply the calculations to the planes I'm looking at and see how they, ahem, weigh in. Each plane I'm looking at are pretty much all the same in terms of airfoil, engines, etc. Some are heavier while others are lighter. I can't wait to apply this new formula to see how they turn out!

Thanks again for the info!

Eric