RE: DC-3/C-47 question
Mark have you thought about the wing ribs for the two outer panels?. The plan mentions the old method of sandwiching and shaping balsa pieces between the root and tip ribs to get the intermediate ones. I gave up on this method and went the CAD way of simply scaling down the ribs starting from the root. I didn't check with the actual literature and hoped that their is no transitional airfoil changes, i.e the root being one specific airfoil and the tip being some other. I assumed that it is ClarkY airfoil for all the ribs. Anyways with the present softwares you can do anything, even have the washout (I put in a 2degree for mine manually) built in into the rib design.
Osman