Mark,

My prototype does not have the cored wings. I did not get my foam cutter going until after I built my prototype. With the cored wings, the savings are exactly 1oz. per panel. I guess they could be cored more aggressively and get a few grams more per panel.

As for servos, that would be enough torque for my setup....but I cannot say with any confidence what is really needed with a gasser up front. Perhaps Dick Hanson can comment on what servos he is using in his zdz test bed airplane.


-mark