 Drag Coefficient, and other parameters wanted |
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| astronomerdave |
 Nov 6 2009, 01:21 PM
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#1
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Member  Group: Members Posts: 69 Joined: 26-January 09 From: Los Angeles, CA Member No.: 9,979 Region Association: Southern California  |
Does anyone know where I can find this information (for '72 914/4) ? . . .
Thanks, --Dave |
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| Al Meredith |
Jun 20 2010, 12:09 PM
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#2
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Senior Member Group: Members Posts: 961 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061 |
Porsche Panorama May 1978 page 27 figure 14. I can scan if you all want me to but, the numbers are as follows:
Lamps closed , windows closed ,roof on Cd= .363 lamps open, windows closed, roof on Cd= .380 lamps closed, windows open, roof on Cd= .381 lamps closed, windows closed, roof off Cd= .389 lamps closed, windows open, roof off Cd= .447 lamps open, windows open, foor off Cd= .464 |
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| ewdysar |
Jun 20 2010, 02:43 PM
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#3
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What happens here, stays here. Group: Members Posts: 558 Joined: 29-October 04 From: Altadena, CA Member No.: 3,030 |
QUOTE(Al Meredith @ Jun 20 2010, 11:09 AM)  Porsche Panorama May 1978 page 27 figure 14. I can scan if you all want me to but, the numbers are as follows: Lamps closed , windows closed ,roof on Cd= .363 lamps open, windows closed, roof on Cd= .380 lamps closed, windows open, roof on Cd= .381 lamps closed, windows closed, roof off Cd= .389 lamps closed, windows open, roof off Cd= .447 lamps open, windows open, foor off Cd= .464 Thanks for the info, but I'm looking for the CdA, not the Cd. The various permutations of the Cd are easily found. As Marks914 aptly stated "Cd is only a number, what is more important is CdA. That is what really tells you how effective the aero is." The CdA is merely the frontal area of a car (object) multiplied by its Cd. I have yet to find either the frontal area or the CdA. The Cd of a 911 (0.32) is less than a 914, but the 914 is reported to be "slipperier" due to its lessened frontal area. Thanks again. |
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Posts in this topic
astronomerdave Drag Coefficient Nov 6 2009, 01:21 PM
Elliot Cannon A number of years ago, someone did some wind-tunne... Nov 6 2009, 01:36 PM SirAndy
Does anyone know where I can find this informatio... Nov 6 2009, 01:41 PM SirAndy The search works! :D
"+drag +coefficie... Nov 6 2009, 01:44 PM
astronomerdave
The search works! :D
"+drag +coeffici... Nov 6 2009, 02:33 PM flipb From linky link:
"It is interesting to note... Nov 6 2009, 01:45 PM SirAndy
From linky link:
Btw. that book has some pretty s... Nov 6 2009, 01:54 PM marks914 Cd is only a number, what is more important is CdA... Nov 6 2009, 02:03 PM johannes
Cd is only a number, what is more important is Cd... Nov 6 2009, 02:25 PM ewdysar
Cd is only a number, what is more important is Cd... Jun 20 2010, 11:41 AM type47
..., or alternatively the frontal area of a 914 s... Jun 21 2010, 07:58 AM ewdysar
..., or alternatively the frontal area of a 914 ... Jun 21 2010, 09:51 AM SirAndy [quote name='type47' post='1333253' date='Jun 21 2... Oct 7 2010, 02:35 PM ericread Here's two .pdf documents that should be of he... Nov 6 2009, 04:16 PM astronomerdave
Here's two .pdf documents that should be of h... Nov 6 2009, 04:38 PM ericread
Here's two .pdf documents that should be of ... Nov 6 2009, 04:40 PM jmill
Porsche Panorama May 1978 page 27 figure 14. I ca... Jun 20 2010, 03:58 PM jcb29 Try this site:
http://www.cassidy-online.com/pors... Jun 20 2010, 08:56 PM ewdysar
Try this site:
http://www.cassidy-online.com/por... Jun 20 2010, 09:44 PM sean_v8_914 send chris an email Jun 21 2010, 10:02 AM jd74914 Why don't you take a picture, print it on grap... Oct 7 2010, 03:05 PM Richard Casto
Why don't you take a picture, print it on gra... Oct 8 2010, 06:04 AM johannes
Why don't you take a picture, print it on gr... Oct 8 2010, 06:19 AM Richard Casto
Your method with the squares is way to complicate... Oct 8 2010, 06:39 AM johannes
This comes from a Porsche document and should be... Oct 8 2010, 06:45 AM nathansnathan I just google searched "porsche 914 cda... Oct 7 2010, 03:22 PM johannes I think you can go with 1,6 square meter that seem... Oct 8 2010, 06:02 AM Richard Casto
I think you can go with 1,6 square meter that see... Oct 8 2010, 06:06 AM johannes Closeup
Oct 8 2010, 06:06 AM johannes For your information a second mirror ads 0,014 m2 ... Oct 8 2010, 06:08 AM johannes Sorry for the hijack but speaking of Sketchup, I s... Oct 8 2010, 06:40 AM 1968Cayman Never even heard about Sketchup. This is pretty ne... Oct 8 2010, 10:07 PM Elliot Cannon I know for sure the car is a lot more aerodynamic ... Oct 8 2010, 11:53 PM jcb29 "Johannes" - Would you mind sharing your... Oct 9 2010, 01:18 PM |
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