Leonardo da Vinci Animated Contraptions Challenge.

For this challenge we want you to take one of Leonardo's concepts and turn it into Cinema 4D reality. His contraptions covered everything from flying machines, helicopters, submarines, armoured tanks, giant crossbows etc. As well as a weapon designer, he was an engineer, anatomist, scientist and must rate as one of the most creative minds ever to have existed.

http://www.c4dcafe.com/ipb/index.php?showtopic=46631