 How Targa roof and lights opened affect max speed., Vintage test report ... |
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| johannes |
 Aug 18 2006, 04:11 PM
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#1
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Club Porsche 914 France President  Group: Members Posts: 3,084 Joined: 13-January 06 From: France Member No.: 5,409 Region Association: France  |
Just found some interresting facts in a vintage french magazine.
Test was made in January 1970 by a french magazine Porsche 914/4 1.7 80 HP DIN at 4900 (85 HP SAE at 5000) Test was made at Montlhery ring ( near Paris) by a cold day (6 °C / 42.8 F ) Driver alone Targa ON / lights OFF max speed 167.4 kmh (104 mph) Targa ON / lights ON max speed 164.9 kmh (102.5 mph) Targa OFF / lights OFF max speed 163.8 kmh (101.8 mph) Targa OFF / lights ON max speed 161.5 kmh (100.4 mph) Conclusion: At theese speeds, with this temperature and the targa OFF you better wear a thick coat and gloves ... (IMG:style_emoticons/default/chair.gif) |
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Replies(1 - 8)
| So.Cal.914 |
Aug 18 2006, 04:20 PM
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#2
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
What was the speed with the:
TARGA OFF / LIGHTS ON AND TIRES FLAT. (IMG:style_emoticons/default/smile.gif) |
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| johannes |
Aug 18 2006, 04:30 PM
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#3
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Club Porsche 914 France President Group: Members Posts: 3,084 Joined: 13-January 06 From: France Member No.: 5,409 Region Association: France |
(IMG:style_emoticons/default/burnout.gif) Tires seemed OK on the picture ...
Attached image(s) 
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| Brett W |
Aug 18 2006, 05:21 PM
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#4
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None 
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How do jackstands affect top speed?
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| michel richard |
Aug 18 2006, 05:25 PM
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#5
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Senior Member Group: Members Posts: 1,291 Joined: 22-July 03 From: Longueuil, Québec Member No.: 936 |
Johannes,
Merci, Very interesting information. Anybody out there able to translate this data into drag coefficients ? Michel |
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| michel richard |
Aug 18 2006, 05:26 PM
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#6
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Senior Member Group: Members Posts: 1,291 Joined: 22-July 03 From: Longueuil, Québec Member No.: 936 |
Johannes,
Can you scan and upload the article ? Michel |
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| Joe Ricard |
Aug 18 2006, 05:30 PM
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#7
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Cool, I got some genious co-workers maybe next week.
But that's logical about the results. I must be making mad power and a bit more aero stuff. I can accelerate pretty good even from 100 MPH. Seems to hit the aero wall about 117 - 120 range. I notice differences in head temps with top off windows down too. Maybe I need "air tabs" |
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| johannes |
Aug 19 2006, 01:45 AM
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#8
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Club Porsche 914 France President Group: Members Posts: 3,084 Joined: 13-January 06 From: France Member No.: 5,409 Region Association: France |
QUOTE(michel richard @ Aug 18 2006, 03:26 PM)  Johannes, Can you scan and upload the article ? Michel Its 10 pages of very small printed text ... Its also larger than my scanner ... and all in french ... I am afraid I won't upload that ... (IMG:style_emoticons/default/sad.gif) |
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| Gary |
Aug 19 2006, 07:38 AM
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#9
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Senior Member Group: Members Posts: 744 Joined: 12-January 03 From: Mount Airy, MD Member No.: 134 Region Association: MidAtlantic Region
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QUOTE(michel richard @ Aug 18 2006, 04:25 PM) Johannes, Merci, Very interesting information. Anybody out there able to translate this data into drag coefficients ? Michel Old thread. |
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