North Yorkshire Institute of Engineering & Technology is running a free lecture in Leeds on 7th May - information and booking at http://www.theiet.org/events/local/197624.cfm - entitled Cycling for Speed - Technology which has changed the bicycle. They have also posted two video presentations on the web which are at http://mycommunity.theiet.org/communities/videos/210#.U15fvaNOVjE - "Flying blind to blind cycling" and "Commemorating the Tour de France".