Before you build a trebuchet, you should try to get hold of the Scientific American issue that showed the engineering progression of the device over time, and how it eventually culminated in the most efficient design. I don't remember the issue, but it was well before they dumbed-down the magazine to turn it into consumer-level infoslop.
IIRC, it was the design with the free-wheeling carriage with a canted swinging counterweight and an under-carriage sling with a tunable release hook. The free-wheeling carriage let the device find its natural center during launch so no force was drained from the swingarm, and by canting the swinging counterweight they gained that much more conversion of potential energy into kinetic energy. Respectfully, Adam Phillip Churvis Get advanced intensive Master-level training in C# & ASP.NET 2.0 for ColdFusion Developers at ProductivityEnhancement.com -----Original Message----- From: Russel Madere [mailto:[EMAIL PROTECTED] Sent: Friday, August 24, 2007 10:49 AM To: CF-Community Subject: Re: all you office warriors LOL I think I'll get my Boy Scouts to build one. We can make that as part of Engineering Merit Badge. >>I prefer the trebuchet ... > >That's not a trebuchet, its just kindling waiting to happen. This is a trebuchet. >http://www.trebuchet.com/content/pages/10201 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Get the answers you are looking for on the ColdFusion Labs Forum direct from active programmers and developers. http://www.adobe.com/cfusion/webforums/forum/categories.cfm?forumid-72&catid=648 Archive: http://www.houseoffusion.com/groups/CF-Community/message.cfm/messageid:241216 Subscription: http://www.houseoffusion.com/groups/CF-Community/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.5