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Old 10-14-2011, 03:01 PM   #4 (permalink)
Frank Lee
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Dunno about that. I'm assuming that even under 0 yaw, and ignoring the effects of the spokes and being in the wake of the leading quadrant of the rim and forks, it only needs a small radius for "attached" flow as it were (or weren't). Figure a wheel, wind coming from 3 o'clock... 1:30-4:30 o'clock is where the rim is a trailing edge, 4:30-7:30 is the bottom and hardly moving in relation to still air; 7:30-10:30 is the following quadrant where the rim would be the "leading edge", and 10:30-1:30 is where the rim is speeding along at 2x vehicle speed in relation to the air. I would think that especially on bikes, due to the low speeds, they're almost always in yaw, perhaps severe... so then would rim profile matter?
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Last edited by Frank Lee; 10-14-2011 at 03:38 PM..
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