Torsion Specific Pages

Torsion

Great Torsion Sites

siege-engine.com - Great terminology and advice. Designs too!
Onager Online - Home of the Onager
ChuckyII Video - Amazing demonstration of torsion power. The onager ChuckyII throws over 3000 feet!

Types of Torsion Devices

Ballista

Torsion powered device using two arms connected by a bow string and turned by a high tension twisted bundles of rope called a skeins. Ballista can throw stones (Balls), or arrows. The arm positions...

Hatra Ballista

Torsion powered device using two arms connected by a bow string and turned by a high tension twisted bundles of rope called a skeins. Ballista can throw stones (Balls), or arrows. The arms swing...

Onager

Torsion powered device using an arm turned by a high tension twisted bundle of rope called a skein. Onager arms swing in a vertical plane like a trebuchet. Check out an excellent video of ChuckyII,...