Quote:
Originally Posted by MetroMPG
FYI, I measured the bottom angle: it's 4 degrees from the undertray to about a quarter of the way along the length of the boat tail, where it transitions to 7 degrees. And we saw from the tufts that it had attached flow to the end.
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So a steeper angle may be possible. And it would certainly make a boat tail easier to live with. If your underbelly were as smooth as, say, 3-wheeler's, might a 10° angle be possible? It would result in a much shorter tail.