I have 4 Norvel .061's stached away for a B-17 project someday. My Dad was a B-17 Bombadier, 33 combat missions. I'm thinking something like a 75~80" wingspan, sound about right ? Did not know it has symetrical airfoil, glad to hear that. I would probably do it with elevator only, no flaps. I would like to be able to do loops, wingovers, and inverted flight; but not interested in doing any of the square maneuvers.