How does the 'Beastie' cycle work?

Former world champion racing cyclist, Graeme Obree, has posted a video online demonstrating how the cycle mechanism of his unconventional bike 'Beastie' works. Obree will be attempting to set a new human-powered land speed record with the help of Beastie. via Pocket http://www.bbc.co.uk/news/technology-24031974#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa