"Ziggurat": A Floating Arm Trebuchet.

Tim Rueger, October 2003.

Entry in TexLUG medieval siege engine contest.
For details, see:

  http://www.texlug.org/fall2003/
  
Architecture and general design tips found at:

  http://www.trebuchet.com/

Other notes:
  
General ideas and pointers: http://www.trebuchet.com/plans.html

Floating arm trebuchets: http://www.trebuchet.com/story.php/fat.html,
                         http://www.trebuchet.com/story.php/otherfats.html

Sling slip ring animation: http://www.ripcord.ws/howslingswork.html
(Main page is framed.)

Math treatments: http://www.algobeautytreb.com/