.....for a rotating "wheel" (lever) , due to a way of moving on feet , at :
http://www.nytimes.com/2007/03/29/arts/20070327_CIRCUS_GRAPHIC.html (http://www.nytimes.com/2007/03/29/arts/20070327_CIRCUS_GRAPHIC.html) (click on 5)
It's a circus show , but in the same time , a descriptive design suggestion for a possible self-powered arrangement...
...if we replace the performer's motion (center of mass) , with "something alike"...or human powered into gravity powered.
Al_ex
Hi Alex.. they ask to log in prior to see anything. Don't want to spread myself onto all portals of the world. :P