Quote:
Originally Posted by chrisgerman1983
I am thinking about a small kammback on my van. Does anybody know how the effectiveness is altered by size? I am mostly trying to go as small as I can while having the highest, effect to size ratio. The reason I need it to be small is that it has to be a split design and I occasionally have to drive with the back doors open. Thanks in advance
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If you'll do a Search EcoModder for the thread 'full-boat-tail trailer',go to page 25 of that thread,and down to permalink#248,the 12th and 15th image from the page top have pictorial drag tables for two different types of boat tails.
You can look at the lengths and compare drag coefficients.