RE: Inst. Of Control Horns
The clamping and crushing of the balsa by the horn and back plate is the reason I punch pin holes in the area where the horn & back plate mount, and saturate with thin CA. The method I described is how I do airplanes of normal size: up to .60 2 stroke, 1.20 4 stroke. There are many way's to skin a cat! I am always willing to try new approaches and have come up with stronger methods on bigger planes, where the stresses are greater