As exclusively reported in Issue 52 of the BHPC Newsletter back in 1998. Well, exclusively apart from The Times and New Scientist. Curiously, the item in the former stated "typically the rider represented about 64 per cent of aerodynamic drag and the bicycle a mere 21 per cent". I am at a loss to work out what causes the remaining 15% of the aerodynamic drag, but then I'm not a njineer.