And if you are looking to find some very fine replica weaponry to flail around as you ready to lay siege, or find that perfect outfit to wear to your first launch, take a look here: Museum Replicas

They also have some cool stuff here too: Atlanta Cutlery
My Trebuchet.  The last great seige weapon before gunpowder.
This is my working, scaled-down trebuchet. It can fire a marble with a modicum of accuracy over 25 yards. Seven pounds of lead fishing weights are in the bucket to act as counterweight to the sling and arm.

The mathematics involved in trebuchet mechanics are algorithmic......which means I don't understand them at all. This design was adapted from a recipe  obtained online, and tweaked through trial and error.

Matt has a  breakaway castle wall we made from insullation foam which acts as the target for our seige weapon. A tug of the trigger cord and "KA-CHUNG"! ..."Missile's away!"
ARM
COUNTERWEIGHT
MARBLE PROJECTILE
SLING
WHEEL
TRIGGER LATCH
And if you are looking to find some very fine replica weaponry to flail around as you ready to lay siege, or find that perfect outfit to wear to your first launch, take a look here: Museum Replicas

They also have some cool stuff here too: Atlanta Cutlery
">
">
">
">