Proposed model consists of around 120 parts. Minifig scale.
Powerful addition to any medieval army (past, present or future LEGO castle themes) laying siege from land or sea.
Fun and educational.
Inspired by: http://en.wikipedia.org/wiki/Trebuchet
For those interested, here is the link on physics behind this engine:
Thanks for supporting! :)
Here on picture as a part of the siege on my MOC - AD 1202 Crusaders siege of Zara, inspired by the true historical event.
Original blueprint. Source: Wikipedia