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Old 11-16-2012, 07:24 AM   #11 (permalink)
AndrzejM
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Join Date: Oct 2011
Location: Poland
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Berta - '97 BMW 318 tds Compact
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Quote:
Originally Posted by ChazInMT View Post
I'm not so sure a Kamm would help much without it being meticulously designed and built, and even then you might only get 5-7%. Reason I say that is your roof to rear glass transition area radius is freakin huge, there are papers done on this that show a big rear radius improves Cd a lot.
You don't need to design your kamm using rocket science just a common sense, aero template and remember to taper it to the back. And you can get good numbers from that Berta kamm coastdown test

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