Heres a question that I don't seem to get a straight answer on. I want
to build a wooden aircraft. Instead of using sitka spruce, I'm
considering douglas fir. Since fir is stronger by approx. 25%, can the
limitations of the plane be pushed up by 25%? Is there a formula to go
by, or a place to contact? Given the right sized powerplant, could the
numbers be higher?
Jim