S2000 Talk Discussions related to the S2000, its ownership and enthusiasm for it.

Rear Difussers

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Old Oct 19, 2004 | 11:43 AM
  #11  
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Originally Posted by Big Ben,Oct 19 2004, 12:31 PM
I think this diffuser will work just as well as the one produced by Feels or any other company. Don't be fooled by the thought that you have to spend big money to get the great performance that the more high priced companies sell. Burt Rutan proved that just a couple of weeks ago.
Darn straight! You too can spend $25M+ to earn a $10M prize.

That was a cool plane, but a ballistic sub-orbital shot and an orbital insertion are about as far apart as my bicycle and my S2000. Both are amazing high performance machines, but the one is definitely not the same as the other.

I also agree that this device probably worka as well as any other bolt-on aftermarket diffuser. But that's not saying much, since I wouldn't put any of them on my car.
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Old Oct 19, 2004 | 11:44 AM
  #12  
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Originally Posted by mikegarrison,Oct 19 2004, 01:04 PM
Pushed down from the top (assuming a wing) is a lot easier to adjust. And most crucially, it doesn't change as much when your ride height changes (due to a bump, for instance).
This is very true , but most people don't realize this.

The venturi that is produced by a diffuser requires that the ride height not change by much while at speed. This means that if you come over a crest at 90mph, the suspension extends and you now have probably 5" to 6" ride height under the car, the venturi is virtually gone.

While traveling straight, this wouldn't be a big deal, but if you turn at the same time, you might be in for a wild ride.

This happened to a McLaren F1 race car a few years ago. The video has circulated around the web for years. The video where the car comes over the crest in the road and it just starts to do several back flips in the air.

This would most likely never happen to an S2000 simply because the S2000 can't reach the speeds of that car. There is a big difference between 150mph and 200mph.
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Old Oct 19, 2004 | 11:48 AM
  #13  
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Originally Posted by mikegarrison,Oct 19 2004, 01:43 PM
Darn straight! You too can spend $25M+ to earn a $10M prize.

That was a cool plane, but a ballistic sub-orbital shot and an orbital insertion are about as far apart as my bicycle and my S2000. Both are amazing high performance machines, but the one is definitely not the same as the other.

I also agree that this device probably worka as well as any other bolt-on aftermarket diffuser. But that's not saying much, since I wouldn't put any of them on my car.
I wouldn't put them on my car either. But my reason is that at the speeds the S2000 gets to on a track, a diffuser isn't needed. If a person has an S2000 that can sustain an average track speed of 130 to 150mph like a LeMans race car, then yes, a diffuser will be a great addition.

But the money spent for the gains that are really not needed makes this product fall in the "bling" catagory for me.
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Old Oct 19, 2004 | 11:53 AM
  #14  
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I wonder if there is a way to measure just how much a diffuser helps, creating less drag, and accelerating from higher speeds. Do you think you would feel a difference with a stock s2k and one with a diffuser accelerating from say 80-140?
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Old Oct 19, 2004 | 12:05 PM
  #15  
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diffusers rule.. forget rear under spoilers or whatever else.. top secret and feels are the 2 most common for our car.. i want a top secret carbon diffuser with the kevlar vortex generators!

[]D[][]V[][]D[][]\[]
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Old Oct 19, 2004 | 12:12 PM
  #16  
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Does anybody know if a feels rear diffuser will fit with a dual exahust... BTW here pics of lots of diffusers on the s2k. https://www.s2ki.com/forums/index.php?showt...er%20pics&st=50
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Old Oct 19, 2004 | 02:07 PM
  #17  
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Originally Posted by duff0000,Oct 19 2004, 01:53 PM
I wonder if there is a way to measure just how much a diffuser helps, creating less drag, and accelerating from higher speeds. Do you think you would feel a difference with a stock s2k and one with a diffuser accelerating from say 80-140?
You wouldn't be able to "feel" a difference. The only difference you would be able to recognize in a race car is that you are able to keep traction in a corner at higher speeds.

[QUOTE]diffusers rule.. forget rear under spoilers or whatever else.. top secret and feels are the 2 most common for our car.. i want a top secret carbon diffuser with the kevlar vortex generators!
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Old Oct 19, 2004 | 09:41 PM
  #18  
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The ebay product shown on the very first post is a direct knock-off of the Feels' product. And yes, it's designed to work with dual output mufflers.
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Old Oct 19, 2004 | 10:42 PM
  #19  
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Originally Posted by Big Ben,Oct 19 2004, 12:44 PM
This happened to a McLaren F1 race car a few years ago. The video has circulated around the web for years. The video where the car comes over the crest in the road and it just starts to do several back flips in the air.
Sorry for getting offtrack (no pun intended), I thought that was a Mercedes CLK GTR that launched itself into a rendition of a field goal kick?

Wouldn't be surprised if a McLaren did that too though, or any race car for that matter with aero in the wrong condition.

http://www.racingflix.com/browsevideos.asp?p=3
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Old Oct 20, 2004 | 04:06 AM
  #20  
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Originally Posted by Big Ben,Oct 19 2004, 02:44 PM
This is very true , but most people don't realize this.

The venturi that is produced by a diffuser requires that the ride height not change by much while at speed. This means that if you come over a crest at 90mph, the suspension extends and you now have probably 5" to 6" ride height under the car, the venturi is virtually gone.

While traveling straight, this wouldn't be a big deal, but if you turn at the same time, you might be in for a wild ride.

This happened to a McLaren F1 race car a few years ago. The video has circulated around the web for years. The video where the car comes over the crest in the road and it just starts to do several back flips in the air.

This would most likely never happen to an S2000 simply because the S2000 can't reach the speeds of that car. There is a big difference between 150mph and 200mph.
Wasn't that the MB CLK GT-R?
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