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Originally Posted by redyaris
The first question I have is where do the reaction forces take place when a side wind acts on a motorcycle?
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Good point. The strings experiment is interesting but less relevant than I first thought. It is only a side wind when the bike is parked. Any time the bike is moving forward faster than the side wind's velocity, the apparent wind will be a vector off of the front. Making the streamlined bike a symmetrical wing with an angle of attack.
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regardless of where the static CoP from the side is, The streamline shape with an angle of attack will have the greatest lift (side) force somewhere toward the front near the point of maximum width.
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