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Behemoth - The Ten foot Trebuchet

This is a complete tutorial on how to make a very big Trebuchet. I call this one "The Behemoth" because its the biggest siege engine I have built. Some quick specifications are that it currently shoots a 6 pound rock about 140 feet (without any tuning). The swing arm is ten feet long and as you see it in the picture below the height is about twelve feet. The counterweight currently on it is 220 pounds. And this is adjustable. It cost me around 300 dollars to build and that doesn't include any cost for the weights (I had those available) and your cost would vary depending on how you improvise things. I just used the round metal weights that you use on a barbell.

The thing about a trebuchet is that is actually a pretty simple siege engine. There is not a whole lot to it and for the most part it is just a seesaw with a weight on one end and a string and pouch on the other!

I will show you how I built it and more importantly I will give you some rules of thumb on how to make a good one and how to get some efficiency out of it. I do have a youtube video showing me firing this thing off. You can watch this video at the bottom of this page.

 

 

The following picture shows the trebuchet loaded and ready to fire. All it needs is to pull the trigger rope.

And this picture shows it just at launching. The projectile has just been released. It is a 6 pound rock. You can see it having just left the pouch.

 

Ok, let's move on to the tutorial on how to make this massive trebuchet

The Video of Firing off this Trebuchet

 

 






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Table of Contents for the Trebuchet Making tutorial

  1. Trebuchet Home Page
  2. Materials/Tools
  3. Assemble the sides
  4. Assemble the base
  5. Make and attach the swing arm and counterweight
  6. The stringpouch and the runway
  7. Finish and fire it!
  8. Trebuchet video (quicktime MOV)
  9. Books/Buy
  10. Free Trebuchet Plan
  11. Trebuchet blueprints
  12. Trebuchet and Siege Engine Documentaries/DVDs
  13. Books/Medieval store
  14. The History of the Trebuchet

Check out My Store: Siege Engines you can buy at amazon.com

Unusual Siege Engine Kits

Kits to make big Siege Engines

 

More Trebuchet Stuff

Catapults!

  1. Popsicle Stick Trebuchet
  2. Office Supply Trebuchet
  3. The Little Dragon Trebuchet - Build this table top sized trebuchet
  4. The Tennis Ball Trebuchet
  5. The Bicycle Wheel Trebuchet - This one is bigger and a bit more serious
  6. Koji's Trebuchet Improvements
  7. John H. Trebuchet and Research improvements
  8. Adil's Mini Trebuchet
  9. Gabe's Ferrari of Trebuchets
  10. Trebuchet Videos
  11. Tips on Improving your Trebuchet
  12. Trebuchet Kits
  13. Trebuchet Arm Tips and advice
  14. Trebuchet Physics
  15. A Trebuchet Model
  16. Trebuchet Blueprints
  17. Check out a real medieval trebuchet located outside a fortress in Cairo
  18. The popsicle stick trebupult

 

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