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At what speed should the rear spoiler rise?

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Old 12-20-2017, 04:43 PM
  #76  
NC TRACKRAT
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Just did the "Spoilerectomy". Don't know why I haven't done this sooner. Thanks to all who contributed instructions, pics, etc. Merry Christmas to all!
Old 12-20-2017, 05:07 PM
  #77  
DanL993
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Originally Posted by PRSWILL
I modded mine so it only goes up when I push the button.
AND only goes down when you push the button.

Originally Posted by NC TRACKRAT
Just did the "Spoilerectomy". Don't know why I haven't done this sooner. Thanks to all who contributed instructions, pics, etc. Merry Christmas to all!
It will change your life forever!!
Old 12-20-2017, 08:58 PM
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il pirata
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[QUOTE=DanL993;14676470] Finally I'll restate that the question of the need for that spoiler has been asked on this forum more than once and no rational, scientific explanation has been proffered. QUOTE]

From Porsche " In the late 1980s, Porsche developed an extendable rear spoiler for the 964 to combine the indispensable effect of vehicle bypass flows with the demands on the typical Porsche design. This completed the first step towards adaptive aerodynamics."

I doubt that it is needed until very high speeds, well beyond what most of us would attempt on public roads in the US. Never been able to get my eyes on aerodynamic testing data done for the 993. Hmm...Maybe Pete S. can do this for an article.
Old 12-21-2017, 06:33 AM
  #79  
DanL993
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[QUOTE=il pirata;14682641]
Originally Posted by DanL993
Finally I'll restate that the question of the need for that spoiler has been asked on this forum more than once and no rational, scientific explanation has been proffered. QUOTE]

From Porsche " In the late 1980s, Porsche developed an extendable rear spoiler for the 964 to combine the indispensable effect of vehicle bypass flows with the demands on the typical Porsche design. This completed the first step towards adaptive aerodynamics."

I doubt that it is needed until very high speeds, well beyond what most of us would attempt on public roads in the US. Never been able to get my eyes on aerodynamic testing data done for the 993. Hmm...Maybe Pete S. can do this for an article.
Well that "From Porsche" statement doesn't really say anything at all technically. My personal theory is that once you remove the engine undercover, the need for the spoiler is completely eliminated....due to resulting disturbances of "vehicle bypass flows"!! Just sayin' is all.......
Old 12-21-2017, 08:48 AM
  #80  
Allen
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Originally Posted by il pirata
I doubt that it is needed until very high speeds, well beyond what most of us would attempt on public roads in the US. Never been able to get my eyes on aerodynamic testing data done for the 993. Hmm...Maybe Pete S. can do this for an article.
The problem in terms of being able to do any kind of real testing on the highway is that once you exceed 80mph, the spoiler is UP and can not be brought DOWN...unless you have performed a mod that makes the UP/DOWN completely manual. I suspect you would be able to feel some difference if you were to raise and lower the spoiler at say 150mph....there would be a LOT of wind being shifted around at 150mph.
Old 12-21-2017, 09:11 AM
  #81  
DanL993
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Originally Posted by Allen
The problem in terms of being able to do any kind of real testing on the highway is that once you exceed 80mph, the spoiler is UP and can not be brought DOWN...unless you have performed a mod that makes the UP/DOWN completely manual. I suspect you would be able to feel some difference if you were to raise and lower the spoiler at say 150mph....there would be a LOT of wind being shifted around at 150mph.
Well, for my part, one of the LAST things I would be doing at 150 mph is fishing down there for that button!! Just sayin'....
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Old 12-21-2017, 09:45 AM
  #82  
pp000830
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In traffic it depends on how hot the car in front of your's is.
Old 12-22-2017, 10:28 AM
  #83  
PRSWILL
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Correct on going down with button push. A lot less wear on the motor.



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