just finiched my speed flying wing and tested it the other day... it is a blast to fly and will do manuvers that a "normal" plane will not do belive me..! it is built off white foam and paper covered , finiched with ora cover. the fuselage is glued too the foamcore with white glue and the engine is a os ax46 and prop is 9x7 fore starters speed is in the 130-140 mph area.