Free Blueprints For A Rabbit Cage Free Blueprints For A Floating Arm Trebuchet?

Free blueprints for a Floating Arm Trebuchet? - free blueprints for a rabbit cage

I'm trying to build a floating arm trebuchet project for my physical level. Does anybody know where I can get plans for a trebuchet, an egg to start / golf ball over 300 yards or more?