Has anyone built a successful trebuchet? Basically, you compress something then let it go, and its supposed to go flying back to its original position sending its payload flying.
I've tried a few designs - I first tried a chain to slowly pull it down but I couldn't get the chain to snap so it releases it.
On this design I tried with falling balls. The chain does snap but there's not enough power with it.
The trebuchet is facing the wrong way, I was just using this level to test it. If the sticks are compressed too much they stop springing back to their original position - you can adjust the blue supports (or add more) to make sure you don't compress it too much.
My example is pretty pants, plus I haven't figured out how to shoot the payload (you could put a basket on the end and make part of the top blue so the rolling ball that acts to compress it falls down before the basket I guess...)
Anyway, just wondering http://FantasticContraption.com/?designId=154437