Build a Working Model Spring Catapult wit da Vinci Spring Catapult Plans and Instructions. Once complete, this scale model catapult is over 18 inches long 12 inches wide and 24 inches high.

Professional Design

Professionally engineered, this Spring Catapult is based on Leonardo da Vinci's own design and updated for ease of construction and operation.

Great Project

da Vinci's Spring Catapult is an interesting study in catapult design. Most ancient catapults used either tension or torsion for motive force. Leonardo's spring catapult uses tension, converted to torsion, to launch its projectile.

The Spring Catapult is perfect for demonstrating ancient design and technology as well as the physics of tension, torsion, and basic machines.