Two Words: Joint strechyness.
Its hard to explain but I will try. The smaller triangle inside the large one is weak and stretches easily. So I attached a rod from it to a lever, so it could stretch a little further than needed, and when the main lever the weight pulls on hit the ground that force stopped working, the arm was still moving for a bit, until the strechy snapped it backwards with enough force to send the various mechanisms traveling in reverse.
I didn't explain it very well, i'm sorry its hard to explain...
thank you guys for the complements. It took about 20 minutes to create the device although making it solve was the hard part maybe an hour and a half total including getting the champion badge.
Last edited by Protogenius
on Fri Jul 09, 2010 10:33 am, edited 1 time in total.