http://www.gizmag.com May 13, 2008 Drawing on a background that ranges from experience as an aerospace technician to a stint in research and development on the Williams F1 team, Marcus Cunnington has designed and built the 6.3kg (around 13.9 pounds) Free Spirit - a carbon fiber composite design that claims the mantle of the world's lightest manual rigid wheelchair. en gizmag.com http://www.gizmag.com/worlds-lightest-wheelchair/9272/#comment-52186 http://www.gizmag.com/worlds-lightest-wheelchair/9272/#comment-52186 Tue, 08 Mar 2011 20:54:54 -0600 http://www.gizmag.com/worlds-lightest-wheelchair/9272/#comment-51664 http://www.gizmag.com/worlds-lightest-wheelchair/9272/#comment-51664 Fri, 04 Mar 2011 05:03:49 -0600 http://www.gizmag.com/worlds-lightest-wheelchair/9272/#comment-3988 http://www.gizmag.com/worlds-lightest-wheelchair/9272/#comment-3988 Sun, 26 Jul 2009 05:57:07 -0500