[quote=charlescarlis]I've vacuum bagged stuff myself-mostly large, remote controlled jet wings. These are the 30 pound, 200 mph, 80 inch wingspan jobs, so flutter and strength are a big hairy deal. I don't think you'll get a lot of feedback as not too many people seem to do this. At least that are on these forums.
Please post your progress as I'll be doing the same, but with some rudders for a H21.
I'd first consider your layup directions-you want to alternate cloth on the bias because it will give you better torsional rigidity-you don't want them to flutter. You also have the opportunity to incorporate unidirectional carbon fiber on each side to give a more rigid shape against lateral loads, like an I-beam. I would epoxy this down on the cores first, because it's generally thicker and you can hide it with your glass cloth. If you don't do it all in one layup, then be sure to have peek ply on top to pull out any amine blush and give the next layer tooth. A single layup will be stronger, just messier. On hollow wings we used to shoot for something around a 18-20 ounce, combined layup, not including carbon reinforcements. On such a large dagger with a bunch more abuse, I'd bet twice that is about right, but don't know for sure. 40 ounces seems like a lot...Just guessing.
And post cure, for sure. Simple hot box with lights made out of foam board works wonders.
Run some small scale tests; that's what I'd do, then share. Once I get my equipment running in about a month (after other projects), I'll do the same.
Good luck![/quote]
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