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Old Aug 9, 2011 | 05:46 PM
  #4421  
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Grassroots

245 kooks average grip 1.152 g
255 kooks average grip 1.181 g
a6 hoosier average grip 1.241 g

difference between a6 and kook 1.8 seconds on a 56 second course.

comments?
Old Aug 9, 2011 | 06:26 PM
  #4422  
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^ actually has the 245 and 255 kooks lateral grip closer than my rear end had em.
Old Aug 9, 2011 | 06:46 PM
  #4423  
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Originally Posted by josh7owens
Grassroots

245 kooks average grip 1.152 g
255 kooks average grip 1.181 g
a6 hoosier average grip 1.241 g

difference between a6 and kook 1.8 seconds on a 56 second course.

comments?
I'm shocked it's so much faster. Were these tested back to back on the same day?

If the difference is around 2 seconds now, what was it 4 years ago when the RE-01R ruled the roost? The A6 hasn't changed. ...Or has it?
Old Aug 9, 2011 | 06:55 PM
  #4424  
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Yes it was back to back runs.
Old Aug 9, 2011 | 07:44 PM
  #4425  
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Yeah i feel like people have always said its a 2 second difference, even in the azenis days. Hmmm
Old Aug 9, 2011 | 07:53 PM
  #4426  
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I'm really surprised by the very small difference in lateral acceleration between the Hankook and the Hoosier. On my C Stock car, the difference was more like 0.2g between Azenis and V710s.
Old Aug 9, 2011 | 08:47 PM
  #4427  
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That time difference is certainly in the ball park for a 56 second course. I would call the 0.2 sec delta from the 2 sec "guide line" close enough, certainly within driver noise.
Old Aug 9, 2011 | 08:52 PM
  #4428  
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Originally Posted by 762
Just thought I would see if some new changes I made to the car make sense with everyone elses understanding. Car had some slow speed push so I bumped front camber to -2.9 from -2.8 and then in order to increase rear stability at higher speeds I lowered the rear of the car so it's corner balanced and closer to even in front and rear ride height.

Obviously they are minor changes but car is working well.

How does everyone like to set rear camber. I am at 2.6 and wear is pretty even but how do you tell in driving dynamics that you are running to much?
A skid pad can give a reasonable read on this and tire pressure. I have been running 2.5 with the R-S3s at 34 lbs in the rear and agree with the wear comment. Using a 75 ft radius skid pad indicated even (within 10 deg) temps across the tread. At 36 psi they were hotter in the center and about 1/2 second slower. Sorry, I don't know the relative calibration of my Long Acre pressure gauge.
Old Aug 9, 2011 | 09:36 PM
  #4429  
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rob, where would one test stuff like this? do you have your own personal lot?
Old Aug 9, 2011 | 10:02 PM
  #4430  
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Originally Posted by josh7owens
rob, where would one test stuff like this? do you have your own personal lot?
We did a local test and tune back in May after the Evolution School test and tune got cancelled (due to last minute personal issue for the instructor). I can share the course elements, including skid pad, if you are interested.



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