ORIGINAL: sensei
So what you are saying is, light plywood airplanes come out lighter than a properly designed or modified balsa airplanes, and if they do come out too heavy, just bolt on more power. This type of thinking is wrong on so many levels, especially on little airplanes. Global model airplanes are cool, but far from an optimum designed airframe in terms of weight consideration. You can build the Global Raven in this size with an all up weight of 6 to 6.5 lb ready to fly. two points to remember, horse power is not an antidote for wing loading, and we build to fly, not crash.
Bob
which and who's?
Replacing a part of the airframe with a weaker material is an engineering decision.