Colin, You are right about dihederal on all points. I may have been unclear in my post. I was wondering if anyone had done a wing in one piece per side loke an RV or AA1 with a dihederals at at the center. There are some spar thickness issues and dihederal angle issues which would need to be designed for. It's a big leap, but I really find the WAFs unappealing on several counts.
Bob Polgreen

