Quote:
Originally Posted by sgtlethargic
The justification is based on the book. Did you read the thread?
Look at the space between the front seat and the reeear seat. This vintage tugboat-looking car looks like it could have a seat added => 7-10 people.
The point: How good is this general shape/strategy? Make a smaller version, streamline the wheels, and maybe you're at 0.20 cD (or lower)? And it looks to have a relatively small frontal area.
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There is a
guess in the book - you seemed to have taken that guess as if it is gospel. And, if the wheels were enclosed by bodywork, how much do you think the frontal area would have grown?
Looking at cars like this as role models for making a modern low drag shape is, I am afraid, just silly. It was a wonderful car 100 years ago.
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. 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.