The Stirling Warwolf Trebuchet

In the top 5 Most Wanted Science Kits on Amazon!

Designed and made in the USA for
better quality, better performance!

This highly detailed kit includes a working, historically accurate winch, trigger, trolley-block system, authentic half-lap and mortise and tenon joinery and more!

During a siege of Stirling Castle in 1304, Edward Longshanks (Edward the first, King of England) ordered his engineers to make a giant trebuchet for the English army, named "Warwolf".

With one blow, Warwolf leveled a section of wall, successfully concluding the siege of Stirling Castle. The Stirling Warwolf is generally thought of as the most powerful and most famous of the trebuchets in history.

With an authentic and historically accurate "squirrel-cage" winch mechanism, block-trolley system and working trigger, frame-ladder (for re-cocking), half-lap and mortise and tenon joinery, this is the most highly detailed and historically accurate trebuchet kit you can get. This kit has well over 140 pieces in it, plus two true scale-sized medieval warrior figures. At 1/20th scale, this machine stands 18 inches tall at the apex. The arm reaches to a height of 32 inches, and hurls its projectiles 40 to 60 feet! At 1/20 scale, that's about 800 to 1200 feet for a life-sized model. Even the projectiles (included) are scaled properly to represent 100 lb. and 350 lb. missiles.

Highly detailed and computer cut for accuracy, this model is a joy to build. The detailed instructions are complete with diagrams, photos, tuning tips and even historical notes about trebuchets.

Tools you will need include glue, a flat file and a 1/4" round or rat-tail file, clamps or rubber bands, household scissors and sandpaper to smooth any rough edges (there shouldn't be many.) The only other things you'll need to supply are a few hours of time, a little effort and some pennies for the counterweight bucket.

The kit is made from high-quality white hardwood. It can easily be stained any color, but simple exposure to sunlight will turn the natural wood a rich golden-brown over time.

We've put a lot of time and effort into making this kit as easy and complete as possible. We hope you'll enjoy building and shooting it as much as we have!

Tools required:
Scissors, Glue, Ruler, and a utility knife. Sandpaper is optional.

Assembly time:
For a Master carpenter doing a sloppy job: about 6 hours.
A person with no kit building experience being extremely meticulous: about ten days.
The model in these photos was built by Ron Toms over two days time.

Assembled Size:
- Height: 18" at the main axle, 32" to the tip of the arm.
- Length: 22"
- Width: 18"

Additional Counterweight Required: 720 pennies recommended,
(Or loose nuts and bolts, other coins, rocks, anything that
can fit into the 2" x 2" x 5" counterweight box.)

- 40 to 60 feet with the included wooden ball projectiles.
(Optimal range assumes a well tuned machine)

Shipping weight: 10 lbs.
Box dimensions: 36" x 12" x 4"

Quantity pricing info:
0 to 4 kits, standard price.
5 to 9 kits, 10% off
10 or more kits, 15% off

Orders of $200 or more qualify for FREE ground shipping!

For more discount pricing info, please visit

WARNING! This is a functional model intended for display and/or educational demonstrations of physics. It contains a fast moving arm and projectile that can cause injury if you make contact when firing. Use only under strict, competent adult supervision.

* You'll need to supply the counterweight material. 720 pennies are recommended, but anything from nuts and bolts, BBs, coins, sand or a good fist full of pebbles will do!

* Can throw 60 feet when properly constructed and tuned with sufficient counterweights. Your performance may vary.

* Stirling Warwolf Trebuchet is a trademark of RLT Industries.

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