My design from 2011. See the attached Youtube video for model in action.
Previously released on my Flickr, Instagram, Brickshelf and Youtube
https://www.flickr.com/photos/drakmin/
https://www.instagram.com/drakmin/
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=473147
https://www.youtube.com/user/drakmin/videos
