Steve wrote- >I would destruction test a pair of spars if I had the capability. I don't >have any way of putting 4500 pounds of pressure on anything, much less >getting the load distributed right.
Why test a pair of spars? One will do. And as far as a test setup and apparatus, check out http://www.flysquirrel.net/wing/spartest.html and see if you can duplicate the high-tech test setup detailed there... PS; I'm an engineer and I find no fault with this type of "first cut" analysis to see if you're even in the ballpark. This type of test can be prepared one weekend and run the next (after cure). You numerical types may take exception, but I don't. If it fails in this type of "backyard" scenario, you've got no business flying it at Reno! Oscar Zuniga San Antonio, TX mailto: taildr...@hotmail.com website at http://www.flysquirrel.net