Quote:
Originally Posted by miket
How much difference is there between a boat tail or kamm back with the back end closed or open?
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miket,Sepp,(I believe he lives in Belgium) reported that closing the back on his Nissan Frontier aeroshell made a definite improvement compared to an open tail.
My neighbor Bob ran an open boat-tail on his VW Vanagon and it returned less MPG than what I experienced with my VW Transporter.
Bob never enclosed his,so I have no comparative data to share.
I've never run an open tail,so I have no data to offer.
Perhaps others will come forward with some supporting data.Good question!