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Trebuchet Catapults - Fully Assembled Working Model Trebuchets , Trebuchet Kits , Trebuchet Plans

How a Trebuchet Catapult Works
Trebuchet Basics

Trebuchet Cocked and Ready to FireA trebuchet consists of five basic parts: the frame, counterweight, beam, sling and guide chute. 

The frame supports the other components and provides a raised platform from which to drop the counterweight. 

The counterweight, pulled by gravity alone, rotates the beam. The beam pulls the sling. 

The guide chute guides the sling through the frame and supports the enclosed projectile until acceleration is sufficient to hold it in the sling.

The sling accelerates and holds the projectile until release. 
 

How the Beam  Accelerates the Projectile
Trebuchet Sling and Projectile Leaving the Guide Chute
One end of the sling is fixed to the end of the beam, while the other is tied in a loop and slipped over a release pin extending from the end of the beam. As the beam rotates, it pulls the sling, with its enclosed projectile, down the guide chute. As the sling exits the chute, it accelerates in an arc away from the beam, but because the beam is still pulling the sling behind, the loop is held on the pin.
How the Sling Releases the Projectile
Trebuchet Sling Release Angle
The sling continues accelerating through its arc until it eventually swings ahead of the release pin. At this point, known as the release angle, the loop slips off the pin and the sling opens...
... releasing the projectile. Learn More Click Here to build this trebuchet.

Trebuchet Projectile Release

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Roman Ballista Plans Highland Trebuchet Plans da Vinci Spring Catapult Plans DaVinci Trebuchet Plans
Roman Ballista Highland Trebuchet daVinci Catapult daVinci Trebuchet
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Tennis Ball Trebuchet Medieval Trebuchet Golf Ball Trebuchet Stirling Trebuchet
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Tabletop Roman Onager Plans Mangonel Catapult Plans Statistical Catapult Plans Build a Repeating Crossbow - Repeating Crossbow Plans
Roman Onager Roman Mangonel Statistics Catapult Repeating Crossbow
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Working Model Trebuchet Kit Calculate Trebuchet Shipping

Trebuchet Kit
Item # TK1
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Kits In Stock Learn More About How a Trebuchet Works
The trebuchet kit includes fully precut and drilled frame parts, pins and axles, sling cord and sewn pouch, projectiles and fully illustrated assembly and firing instructions. 

Unlike the flimsy, snap together plywood trebuchet kits, this all hardwood, easy to build trebuchet kit does not require additional cutting, trimming or shaping.

Requires only white carpenter's glue and a few bar clamps (not included) to assemble. 


Fully Assembled Working Models

daVinci Trebuchet
Item # T4
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Learn More About How a Trebuchet Works
Inspired by the great war machines and siege catapults of Leonardo da Vinci , this all Red Oak hardwood trebuchet features an open counterweight cabinet for range and trajectory adjustment. 

Fire with an empty counterweight for indoor use, or add weight (nuts, bolts, scrap lead, iron or steel, sand, or small rocks not included) for increased range.

Individually crafted from cabinet-grade red oak, the da Vinci Trebuchet stands 14 inches tall in the cocked position, 24 inches tall in the fired position and will hurl a projectile up to 60 feet. Includes six projectiles and fully illustrated instructions.

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How a Trebuchet Catapult Works

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