For Western Civilization, there is an extra credit assignment to make a fully functioning trebuchet. There will be a contest between all the other people that made a trebuchet and the one that chucks a golf ball the farthest wins. So far, I did a little research online and sketched a basic schematic. So what I want to know is if anyone, by chance, ever made one of these and could give me some tips. Oh, random picture. http://www.stormthecastle.com/catapult/images/trebuchet-drawing1.jpg