 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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| marks914 |
Nov 6 2009, 02:03 PM
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#2
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Senior Member Group: Members Posts: 845 Joined: 9-October 04 From: the motor city Member No.: 2,912 Region Association: None |
Cd is only a number, what is more important is CdA
That is what really tells you how effective the aero is. Mark |
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| ewdysar |
Jun 20 2010, 11:41 AM
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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(marks914 @ Nov 6 2009, 01:03 PM)  Cd is only a number, what is more important is CdA That is what really tells you how effective the aero is. Mark I hate to resurrect and old thread, but after more than an hour of searching, it looks like this info just doesn't exist. Does anyone know the CdA of a 914, or alternatively the frontal area of a 914 so that I can do the math? Thanks, Eric |
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| type47 |
Jun 21 2010, 07:58 AM
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#4
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Viermeister Group: Members Posts: 4,254 Joined: 7-August 03 From: Vienna, VA Member No.: 994 Region Association: MidAtlantic Region |
QUOTE(ewdysar @ Jun 20 2010, 09:41 AM) ..., or alternatively the frontal area of a 914 so that I can do the math? according to the technical data in the workshop manual, the height of the 914 is 1.23 m and the width is 1.65 m so I would think you could get a pretty good estimate of the frontal area if you assume it's a rectangle so you would get 2.03 sq m as the frontal area |
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| ewdysar |
Jun 21 2010, 09:51 AM
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#5
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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(type47 @ Jun 21 2010, 06:58 AM) QUOTE(ewdysar @ Jun 20 2010, 09:41 AM) ..., or alternatively the frontal area of a 914 so that I can do the math? according to the technical data in the workshop manual, the height of the 914 is 1.23 m and the width is 1.65 m so I would think you could get a pretty good estimate of the frontal area if you assume it's a rectangle so you would get 2.03 sq m as the frontal area Unfortunately, this looks like a significant overestimation. As an example, an '86 911 Carrerra is spec'ed at 1.821 sq m (19.6 sq ft). Even the 928's were right around 1.95 sq m (21 sq ft). Still looking for the answer.... Thanks, Eric |
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| SirAndy |
Oct 7 2010, 02:35 PM
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#6
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Resident German Group: Admin Posts: 41,675 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(ewdysar @ Jun 21 2010, 08:51 AM) QUOTE(type47 @ Jun 21 2010, 06:58 AM) QUOTE(ewdysar @ Jun 20 2010, 09:41 AM) ..., or alternatively the frontal area of a 914 so that I can do the math? according to the technical data in the workshop manual, the height of the 914 is 1.23 m and the width is 1.65 m so I would think you could get a pretty good estimate of the frontal area if you assume it's a rectangle so you would get 2.03 sq m as the frontal area Unfortunately, this looks like a significant overestimation. As an example, an '86 911 Carrerra is spec'ed at 1.821 sq m (19.6 sq ft). Even the 928's were right around 1.95 sq m (21 sq ft). Still looking for the answer.... Any update on this? I just downloaded a dyno app for my phone to get me some HP/Torque estimates and 0-60 times. One of the inputs needed to set it up is the frontal area of the car ... (IMG:style_emoticons/default/idea.gif) |
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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 johannes
Cd is only a number, what is more important is Cd... Nov 6 2009, 02:25 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 Al Meredith Porsche Panorama May 1978 page 27 figure 14. I can... Jun 20 2010, 12:09 PM ewdysar
Porsche Panorama May 1978 page 27 figure 14. I ca... Jun 20 2010, 02:43 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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