Broken Spar
Someone gave me a very large / heavy trainer and while in flight the spar broke at dihedral angle of the wing. I was not pulling hardly any g's so in retrospect, it must have had a crack from a previous crash. I have been able to remove the spar and am now trying to figure out how to build a new spar. The old one measures 27-28 mm tall, 10 mm thickness, and about 17 inches in length. The spar appears to be two pieces of plywood (5 mm each) glued together to equal the 10 mm thickness.
I have never done this before so need advice: 1. what kind of plywood (spruce, fir, basswood ???) and where can i buy it.
Also any other advice is more than welcome
thanks
Irvin