Our trebuchet is constructed from 4x6 rough sawn pine.  Its pivot for
the arm is 7'6" tall and the throwing arm is appx. 14' long.  The unit is
powered by 800lbs of counterweight.  As the project progresses more
information and pictures will be displayed to show our mathematical
processes in computing design, counterweight and construction
theory's.
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for more information contact:
tj christiansen
tchristiansen81@yahoo.com
231-845-7303
ext. 2050
Photos courtesy of Jon Erickson
Joe Burton has created a YouTube video of our trebuchet with sounds and details. Click here...

Below is a video of a launch from Nick Tushek.  Looks good!