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Old 08-18-2019, 11:37 PM   #8 (permalink)
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Here is my best attempt at an air dam. At least, the last picture I saved before something corrupted the file, which I never recreated.

The air dam is concaved to feed air sideways to the barge boards, which admittedly might should be bigger.

Based on observing OEM solutions, the outlet should be 1 inch across the middle third of the wheel and the inlet can be any shape with a larger area to create a converging duct.
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