In the case of the Warren Truss, the Wiki article did not address the vertical component that the rib provides. Granted, you guys are getting way over my head with the engineering. I'm just recalling my impression as the Tsunami wing construction was taking place. I have not done any controlled testing, and frankly, I'm surprised at how much interest there is in this issue. With that said, I did like the result of the truss style webbing but I'll continue to follow this discussion and learn what I can learn. Thanks for all the interesting discussion.

By the way, I did "crash" test the Tsunami this past weekend.... a flame-out at low altitude and low speed heading away from the runway. Tip stalled as I tried to turn back and fell 20-25 feet. Broke loose the wing hold down blocks and the servo rails and stress cracked the fuselage directly behind the wing and near the stabilizer, but absolutely no damage to the wing.

ChiefK