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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 |
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