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Originally Posted by JulianEdgar
There is a guess in the book - you seemed to have taken that guess as if it is gospel.
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No, I asked a question about the claim in the book.
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And, if the wheels were enclosed by bodywork, how much do you think the frontal area would have grown?
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I'll
guess 10%.
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Looking at cars like this as role models for making a modern low drag shape is, I am afraid, just silly.
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I'm looking at aerodynamics and considering strategies.
Why did you put modern in there? Are there no not-modern low drag shapes?
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I do not not know of even one old production car that has a good Cd in the context of 2020 - not when the car has been tested in a modern wind tunnel, anyway.
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I'm not looking for an old production car with a good-for-2020 cD.
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With very few exceptions, even the one-offs and research vehicles look pretty ordinary in a modern context - eg Kamm's only K series car that has been tested in a modern wind tunnel had a Cd of 0.37, the lovely Tatra T87 production car had a Cd of 0.36 - and so on.
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I'm looking for the exceptions, whatever the age, to copy.