W108/109 Drag Coefficient? - Mercedes-Benz Forum

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post #1 of 13 (permalink) Old 01-08-2010, 08:39 PM Thread Starter
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W108/109 Drag Coefficient?

I know it sounds like a silly question given the age of the cars and their general shape, but would anyone happen to know the Cd of the sedans?

Thanks!
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post #2 of 13 (permalink) Old 01-08-2010, 10:58 PM
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I believe the same as a barn

Would they even have that data available??
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post #3 of 13 (permalink) Old 01-09-2010, 08:51 AM
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You're right, it is a silly question.

Barn sounds about right.

"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck
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post #4 of 13 (permalink) Old 01-09-2010, 01:40 PM Thread Starter
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What is the Cd of a barn then?
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post #5 of 13 (permalink) Old 01-09-2010, 02:57 PM
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Well, I know that they don't fare well in tornados, so you might want to stay away from those

Seriously though, I wonder what year they started doing cd measurements. I know like the later 60's corvettes were tested and they found that it was more aerodynamic BACKWARDS than forwards! But obviously that was recent testing, not when it was designed.

I don't recall much talk about cd until into the 80's from what I can recall??
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post #6 of 13 (permalink) Old 01-09-2010, 03:35 PM Thread Starter
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Originally Posted by UCF21 View Post
Well, I know that they don't fare well in tornados, so you might want to stay away from those

Seriously though, I wonder what year they started doing cd measurements. I know like the later 60's corvettes were tested and they found that it was more aerodynamic BACKWARDS than forwards! But obviously that was recent testing, not when it was designed.

I don't recall much talk about cd until into the 80's from what I can recall??
I would assume Cds came into the picture after the mid 70s, given the oil crisis and the need for more fuel efficient vehicles. However, it's proving really hard to find such values.
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post #7 of 13 (permalink) Old 01-10-2010, 05:40 AM
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I think the biggest problem is that there would be no reason to retroactively measure this. And it's a lot of work to do it, for basically no purpose.
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post #8 of 13 (permalink) Old 01-10-2010, 05:45 AM
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Might see if Road & Track or Car & Driver have a road test. As far back as I can remember they had a Cd in the data base for the cars that they tested.

If it's not broke it dosen't have enough features.
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post #9 of 13 (permalink) Old 01-10-2010, 09:07 AM
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I had always thought that the next Benz project I do would have a custom made engine pan, to reduce drag...
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post #10 of 13 (permalink) Old 01-10-2010, 09:23 AM
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[QUOTE=DrJfrmLA;3918468]You're right, it is a silly question.

Barn sounds about right.[/QUOT

How about the aerodynamics of an open parachute...
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