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Originally Posted by Max Lobovsky
I don't have any numbers off the top of my head, but I'm pretty sure lexan is horrible in most strength(tensile strength, etc)/weight ratios compared with aluminum. I'd venture to say a good quality plywood will even exceed polycarbonate.
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Really? I've always been told that aluminum and lexan have almost identical strength/weight ratios. However, as it has been stated before, lexan is much more springy than aluminum, and will bend and flex (which led to 190's 2k3 bot throwing lots of chains).
Also, I agree that lexan is much more expensive than aluminum, and 190 would probably not use it if we didn't get it donated every year. In fact, in 2003, the lexan that was donated to us was Hyzod AR, which is a pain to work with due to its abrasion resistant coating, and normally costs $300-$500 for a 4'x4' sheet (about twice what normal lexan costs).