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xavierdisley
hippy
@xavierdisley
Stumbled on this while looking for something else:
http://www.slideshare.net/AltairHTC/examining-the-aerodynamic-performance-of-commercial-bicycle-racing-wheels-using-cfd
A couple of the slides look as though they might shed some light on the reasons why some people can't handle a Hed3 in a cross wind while some of us are not bothered, notably slide 13 showing a sharp change of sign in the turning moment at about 15°, and slide 20 showing a strong periodic variation in drag (reflected in side force and turning moment too?) presumably because the wheel looks very different to the wind with two spokes above the axle vs. two spokes below the axle. This graph also shows a large difference between different forks, which may be a clue to the difference between those of us who regard the Hed3 as an all condition wheel and people who put it back in the car as soon as they can feel any kind of breeze. Thoughts?