This guy has some really amazing rubber band guns

FULLY AUTOMATIC RUBBER BAND GUN!
:D :cool: :P

https://www.youtube.com/watch?v=Zg-HLCfXdg8
:D :cool: :P

I got one for you Rav, figure out a way to turn that into a pulse motor.  It only needs to run for 3 minutes while you video it.  hehe