Quote:
Originally Posted by 3-Wheeler
The shape should be "closing" to reduce the mirror wake size.
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If you use the same mirror and the shape is closing then you have made the fairing larger than necessary and therefore increased the drag.
In other words, the Cd may be lower, but the frontal area has increased.
I wonder how a larger-than-mirror-crossection fairing that closes somewhat toward the rear would compare to a same-size-as-mirror-crossection fairing that was just straight back where it met the mirror?