The lean of a body might cause a bit more lift from side wind than at vertical. Angle of attack affects lift and in turn traction. I would like to try using stretch material such as Lycra to allow a rider to put a knee down. It might be that the change in shape would reduce side lift and add a bit drag to steer into the turn.
Bicycles using front disc wheels have not worked in crosswinds. Trek has an article on its aero shaped tubing which is a 5:1 airfoil with a Kamm length to meet rule requirement.
Sport Rider magazine did an article on wind testing motorcycles in 2006. The racing rules limit the height of the body work behind the rider.
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