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Originally Posted by UltArc
Look forward to seeing the before and after with those mirrors! Side skirts look great, I had no idea that was coroplast. Just a thought, might it be more efficient to have that covered, adding a bottom portion?
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Thanks!
While researching side skirts I had the same idea as you until I came across this post by basjoos from 2008
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I debated both approaches when I did my car, but figured the side skirts would help to keep the airflow travelling straight and parallel under the car, unaffected by the presence of any crosswinds, that could slant and redirect the airflows under the car, possibly increasing the drag. I'm containing the turbulence created by the wheels into a "pod" running down each side of the car with a straight, parallel airflow underneath the car in between the "pods". I recall discussing it with Aerohead on another site, who recommended the approach I took. Adding the side skirts made a noticable reduction in the dust trail kicked up by my car when driving on a dirt road.
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