Medieval Engineers: Automatic Catapult Ally 3: Best failure yet
Channel: Spiritwolf Press
Date: 2015-03-03

I use off set power and torsion spring to create a type of automatic catapult.

Editing done in: MAGIX Movie Edit Pro 2014

Music:
---Victory at Stone’s Rain Theme 
"Angevin B" Kevin MacLeod (incompetech.com) 
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/
-----Direct Link: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100694.