I found where I saw that set up. Watch [ame="https://www.youtube.com/watch?v=bz0NAGQpGKU&list=PL9bOASiij5XzqwU3XhllrxSu TWniZWOW-&index=28"]this movie[/ame] since 7 minute.
These guys actually have gotten this idea and blueprints for this setup from
Yoichi Imamura.