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Old 07-02-2009, 11:52 AM   #51 (permalink)
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ok got it via the saturn net lab width = 66.4 and height = 55

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Old 07-02-2009, 11:55 AM   #52 (permalink)
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nvm already on list
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Old 07-29-2009, 06:43 PM   #53 (permalink)
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I have no idea what mine is. I heard somewhere that .42Cd is about right for a hardtop, but I have a droptop and I'm sure putting the top down tanks that further...
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Old 07-30-2009, 10:52 AM   #54 (permalink)
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...what's the "consensus" thought on the "round-off" number (0.80-0.84, etc.) that's applied to compensate the "rectangular" area value (width x height - gnd clearance)?

...I've seen anything from 0.80 through 0.90 being used, but 0.84 seems most common.

...also, anybody know the CdA for the original Studebaker Avanti that turned 171 mph at Bonneville?

Last edited by gone-ot; 09-09-2009 at 09:11 PM..
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Old 10-06-2009, 06:59 PM   #55 (permalink)
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Added the GMC Sierra XFE and 2001 Ranger to the list, including height and width. If anyone wants to take a guess at frontal area and therefore CdA, please do. The Sierra XFE claims "best in class Cd of 0.412".
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Old 10-07-2009, 10:40 PM   #56 (permalink)
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Quote:
Originally Posted by Old Tele man View Post
...what's the "consensus" thought on the "round-off" number (0.80-0.84, etc.) that's applied to compensate the "rectangular" area value (width x height - gnd clearance)?

...I've seen anything from 0.80 through 0.90 being used, but 0.84 seems most common.
I dropped the wiki data into a spreadsheet to answer this question. 100% of the entries are between 0.81 and 0.87, and 90% are between 0.81 and 0.84.
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Old 10-07-2009, 10:47 PM   #57 (permalink)
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...what does the distribution look like--centered or skewed?

...if skewed, then in which direction--down toward 0.81 or up toward 0.84?

...I'm guessing it's skewed downward with the central (mean) value around 0.82 rather than 0.83.
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Old 10-08-2009, 07:00 AM   #58 (permalink)
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Volvo V70/V70 XC 2001-2009

Aerodynamic coefficient, Cd 0.30
Width 1804 mm (71 inches)
Height 1465 mm (57.6 inches)
Actual Frontal area 2.23 m2 (24.00 sq. ft.)
(modifier would have been .845)
CdA Calculated from data = 7.2

Source: UK Volvo Owner's Club

Volvo V70/V70 XC 1996-2000
Cd: 0.32
width (mm): 1,760, (69.3 inches)
height (mm): 1,427, (56.2 inches)
Est. Frontal Area (27 * .84) = 22.7 sq ft
CdA = Cd * Frontal Area = 7.26

Source: MotorTrend

Red = calculated
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Old 10-16-2009, 11:00 PM   #59 (permalink)
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Okay, I just added two, I mean three vehicles:
Dodge RAM 1500 QC 2002-2008 (I own an 07). Cd = 0.52 (ouch) Frontal area = 35.1 (ouch!) CdA = 18.25
Dodge RAM SRT10 2004-2006. Cd = 0.45 Frontal area = 34.6 and CdA = 15.57
Dodge Avenger 2008-2010 (wife owns an 08). Cd = 0.326 Frontal area = ? CdA = 8.2
Most info I got from allpar.com, and the regular RAM info I think I got from DodgeTalk or Dodge.com. (Avenger stats: 2008 Dodge Avenger cars - specs and stats)

I wanted to put Barn for the first part of my RAM's dimensions, and door for the other, but I didn't think the webpage would compute if I did.
When I discovered the SRT10 was so much more aerodynamic, and the previous generation RAMs were about the same, that started my aero campaign...

Last edited by ECONORAM; 10-16-2009 at 11:01 PM.. Reason: 3 vehicles
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Old 10-21-2009, 06:49 AM   #60 (permalink)
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Added Cd's for a few Peugeot models. More to come...

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