This is my second wooden, hanging counterweight trebuchet and the first well-documented one. It will be bolted together from many self-designed and self-constructed components, each about six feet in length. Hopefully, that strategy will allow for some degree of siege mobility and make fixing broken sections of the device far easier. Oh yeah, a trebuchet is a medieval-era siege weapon capable of hurling a variety of things great distances, inducing feelings of pleasure (in me anyways).
I want to hear your trebuchet tips! This project is just starting and will be updated gradually as things progress; I'm sure there's some latent treb-knowledge in the heads of many Instructablers. Let me know what you think of current plans and where you'd like to see the trebuchet go. Favorite arm-ratios, clever trigger systems, winching mechanisms, sling designs...I'd love to try implementing them. I've never attempted a large scale floating arm trebuchet, but if you're convincing enough, I just might. If you'd like to be a collaborator, let me know and I'll try to add you on.
Also, I'm an enormous SketchUp fan. I'll try to present screenshots of any models I use but viewing and helping with this Instructable will be easier if you just download the (free) software here.
This page will also carry the breakdown of the trebuchet's cost (see the Excel file below). As of my last expenditure on April 27, 2007 I've spent $315.
This here Intro page will be the resting spot for the most current model of the entire trebuchet.
A warning to fellow siege engineers: This project can be considerably dangerous, given the gravitational energy of these things and the fact that it is a weapon. Exercise great caution if you decide to build a trebuchet of any size--smaller models (like this) should be attempted first to get a sense of their operation.
Last note! The Sourpuss Trebuchet is a major inspiration to this project; a final product half as good as their device would be incredibly pleasing. The Dr. Seuss Treb should also be cited for it's poetic awesomeness.