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Old 05-06-2009, 02:08 PM   #41 (permalink)
Ernie Rogers
 
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I did a coast-down on my modified Beetle

Quote:
Originally Posted by RobertSmalls View Post
. . . If you want a slick car, you have to build it yourself?

If anyone has measured the CdA of their cars before and after aeromods, I'd love to see your results.
I measured the Cd of my modified 2003 Beetle some years back. (By coast-down) I have my calculations around here somewhere, but no clue where to find them. Result: Cd = 0.31 with the modification. I didn't measure before, but the published number is 0.38.

Pictures here: Ern's Blog
Some discussion here: Welcome to www.max-mpg.com

Ernie Rogers

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Old 05-06-2009, 02:15 PM   #42 (permalink)
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Tim, mind if I try to move this onto the EM wiki so people can edit it themselves?
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Old 05-06-2009, 02:18 PM   #43 (permalink)
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That would be great Ben. I had talked to Darin about it before and we basically put it on the back burner.
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Old 05-06-2009, 02:20 PM   #44 (permalink)
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You can help
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Old 05-06-2009, 05:26 PM   #45 (permalink)
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1995 Alfa Romeo 146

Cd = 0.31 (source: internet forum)
Width = 67.4in / 1712mm (source: Alfa)
Height = 56.1in / 1425mm (source: Alfa)
Frontal area = 22.06 sq ft / 2.05 sq m (using 0.84 multiplier)
CdA = 6.838 sq ft / 0.635 sq m

I think I got my sums right!
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Old 05-09-2009, 02:29 PM   #46 (permalink)
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Currently working on converting it to the wiki for community editing. Might take a while to brute force the formatting
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Old 05-09-2009, 05:13 PM   #47 (permalink)
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Well, that took quite a few hours: Vehicle Coefficient of Drag List - EcoModder

Should simply adding and editing things, though
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Old 05-17-2009, 12:53 AM   #48 (permalink)
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Added Jeep Wrangler to the list. Its really pathetic to look at next to everything else on the list Anybody else got info for Cherokee, Grand Cherokee, Liberty, or YJ and CJ models? I believe YJ was actually worse(its hard to believe.) Also, I'm gonna try to get top off Cd.
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Old 06-23-2009, 03:54 AM   #49 (permalink)
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That's really a good information. very helpful
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Old 07-02-2009, 10:51 AM   #50 (permalink)
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ok I know a saturn sl2 has a cd. of .34 so know just to find the frontal area

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