Zone01 Challenge - ShotPut

This is my entry for the Zone01 Challenge - ShotPut.  Though I'm not from Quebec, I needed some inspiration, and this was perfect.  I based my machine off of a catapult.  It has weights (motors [2 M-Motors, 2 XL-motors, and 1 NXT Motors]) and some rubber bands on one side, and the carriage on the other (to hold the 45 gram sandbag).  The farthest I could get it to go was 4 Ft. :-(
jojoguy10