Burlington 2019


After several late-night fabrication sessions, Son of Pendragon was ready to go. I had no time for practice shots, so this would be interesting.


The firing line on setup day. Gourdinator had not arrived by the time we left. Only four machines this year, unfortunately.


SoP ready to go. I couldn’t figure out a cocking mechanism in time, so the counterweight arm was lifted manually and the weights added via ladder. Definitely not the ideal solution as far as safety is concerned, which we will have to change for next year.


“Gladiator Gourd Girls”, a traditional trebuchet made by Girl Scouts.


“Bad Wolf”, an onager (powered by twisted ropes).


And of course Gourdinator, a floating-arm-trebuchet that has competed every year.


SoP won its division with a shot of 447 feet (with a 1.4 lb. pumpkin). That works out to almost 5 feet per pound of counterweight (compared to about the 1.5:1 ratio Ballistikraft had). Can we improve on that? Find out next year!

Video footage to follow.


SoP Progress

I’ve been pretty busy lately and haven’t had time to post updates, but here’s a few photos:


Each “trolley” coming together. These are the “wheels” that slide across the tracks.


Please excuse the ugly bird-poop-quality welds- if I had the time I would have made them much nicer. But they’re strong, that’s all that matters for now.


I couldn’t find the right sized rollers for the arm fulcrum (aka the “FUBAR”), so I had to make them custom.


The frame is coming together.


The lengths of recycled Unistrut I used for the tracks ended up being more warped than I realized, so I wasted a lot of time straightening them out. Fortunately, once I was able to get the track/trolley assembly together, everything rolled relatively smoothly.


Hopefully I can post more updates when I can. Only 10 construction days left!