Siege Juggernaut 2

Treatises Engines Of War Engineering Battles Spare Parts Plunder
Juggernaut 2      
Share this page

In 1999, we rebuilt Juggernaut to be larger, stronger, and more dangerous than before. We abandoned our traction technique and moved on to using a counterweight in a more traditional form.

Juggernaut2 includes many more support triangles, a much heftier arm (build now with long two-by-sixes), a winch, and a trigger mechanism. Unlike the original, this was designed to fit into a full sized pickup instead of my little Ford Explorer.

Here we are attempting to lift the original concrete counterweight (estimated at 600lbs) in the air with a fairly simple arm. Look at that bend. It broke soon. You can also see most of the old frame still in use.

Next, we added more framework a bigger arm, and then created a draw-down mechanism. It's quite simple (thank goodness.) A boat winch into an 8 to 1 pulley hooked onto a slide-down cable. The sliding cable idea was taken from pictures found on the net of recreations of ancient machines. It also has the advantage of minimizing the amount of cable which is needed to draw the arm down. When the arm is up right, it doesn't take much to pull the arm a little. When more force is needed, the draw down rope slips farther out the length of the arm, increasing the leverage.

And here is our 160ft toss using approximately 180 lbs of counter weight and a human-trigger.

When we loaded up the counterweight to a full 550 lbs, however, we broke an eye screw holding our sliding cable!

So we fixed it with a 10$ eye bolt with a 2200 lbs working load limit. Take that!

The next order of business was a trigger mechanism. Since we could now draw down the 550 lbs, we needed a real trigger. This wheel trigger is described in detail for ballistas in "The Book of the Crossbow." The trigger line is looped over one tooth of the wheel while the wooden lever prevents the wheel from spinning. To fire, push down on the right side of the lever, the wheel spins, releasing the arm. We originally used a bit of clothesline for the trigger, but it stretched too much.

Juggernaut2 ready to fling a milk jug.

To see some more images of Juggernaut2, visit the How To build a Winch page.

1999 Punkin Chunk
After all that preparation, check out my view of the 1999 Punkin Chunk which we attended. Contains images of our machine, and some competitors which I thought were interesting.

[an error occurred while processing this directive]
Buy a Trebuchet
Buy a Sticker
In The News
Contact Us
Engines Of War
Micro Treb
Baby Trebuchet
Treb Jr
Juggernaut 2
Pumpkin Putter
Baby Ballista
Ballista Jr
Mista Ballista
Baby Hatra Ballista
Hatra Jr
Baby Onager
Onager Jr
Cardan Treb
Scissor Treb
Vacuum Bazooka
Air Cannon Jr
Extreme Chunk 2018
Extreme Chunk 2017
Extreme Chunk 2016
Extreme Chunk 2015
Punkin Chunk 2013
Higgins Siege The Day 2013
Punkin Chunk 2012
Punkin Chunk 2011
Punkin Chunk 2010
MathWorks 2010
Punkin Chunk 2009
Zukapult 2009
History Chunk 2009
Punkin Chunk 2008
Zukapult 2008
Punkin Chunk 2007
Flying Chunk 2007
Punkin Chunk 2006
Zukapult 2006
History Chunk 2006
Punkin Chunk 2005
Zukapult 2005
Punkin Chunk 2004
Punkin Chunk 2003
Bennington HS 2002
Punkin Chunk 2002
Mohonk 2002
Mt. Snow 2002
Bennington HS 2001
Punkin Chunk 2001
Busti Hurl 2001
History Chunk 2001
Punkin Chunk 2000
Punkin Chunk 1999
Punkin Chunk 1998
Spare Parts
Random Picture
All Videos
Seuss Trebuchet
Seuss Onager
Night Before Chunk
Pillsbury Cartoons
Dave Gets Married
Roger Gets Married
Geek Calculator
Browser Hurling
Catapult Kits
Catapult Plans
Contact: Team Tormentum
Copyright © 2000-2022 Eric M. Ludlam All rights reserved.
Twas' brillig, and the slithy toves did gyre and gimble in the wabe...
Last Modified: 05/10/09