well, it appeared to work this time.
I had an extra Giles wing and threw this big sport plane together just before the weather turned south. 60 in. 740 squares 42 oz. Monowheel gear for landing. Powered by an LA 40 with a 12/4 prop. Flies pretty nice. Still needs some trimming to keep it out overhead on 5.8 sec. laps. Does just fine at 5 sec. on a smaller prop. I even went whole hog and masked a 3 color paint job!!
The second pic shows the wing construction. Hollow foam with an internal Ibeam spar. Very light and strong and easy to build. The foam covered with light plastic and then covered with OO silkspan put on with polycrylic. One coat of primer, sanded off 50%. Then two light coats of good old Rustoleum Gloss Protective Enamel. The silkspan and primer pretty much completely cover any trace of the foam. Looks just like sheet balsa. Lots of time to sand when its zero out.
Phil C