I've finished rebuilding a Sig Something Extra that another flyer managed to hit a tree with. I want to make sure I have the correct CD calculated. Does anyone know what the CD of a Something Extra is?

Looking back in my stack of plans the CG falls exactly in the center of the 1/4" wing spar or 3 1/2" back from the leading edge. However... I can tell you from my experience and that of some of my flying buddies... you can shift the CG forward and aft quite a bit (depending on skill level) and the SE will tolerate it pretty well.

Thanks, I'll see what I come up with.

I added added 2 ounces to the nose and CG came out 1/4" behind the spar, flies great with a TT .46 Pro !!!!

Dale