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data on max aero?

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Old Oct 17, 2016 | 10:27 AM
  #16  
Bill Lehman's Avatar
Bill Lehman
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Originally Posted by MarcD147
so bill I am I not good at reading your data let me ask you some questions:

you state that with the aero you lost 2.4 in vmax at the end of the backstraight.
did the aero result in higher vmin in T2 and the Esses?
at what point in the backstraight does the aero result in a slower speed than without aero

if you create a segment that starts at turn in of T2 till middle of busstop what is the difference in segment times?
Look at the GPS Speed trace and the (reference) trace. The reference is a time delta between the two laps. The Blue is the fastest and therefore the base line. Starting at the 2000' mark, Blue is faster through the esses. At the 4000' mark, Orange begins gaining back lost speed as shown by the time delta curve. Looking at the speed trace, you can see max speed of each @ the 5400'. This is an old screen shot and I do not have the original data and can't change the segments. I have been running max aero on the GT4 since day one and would recommend you try it at WGI as it is quick and easy to do and undo. I agree with John Sopa about aero value at NJMP or SP.
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Old Oct 17, 2016 | 11:33 PM
  #17  
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ML///
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Thanks for sharing Bill. I think it might be worth showing more data stacked. When I look at the data I can't tell if the car if throttle is impacting the overall top speed from looking at T2 until the end of the back straight before the bus stop. I'm curious to see the rest of your top lap times to see if the data really has a speed delta at the end of the back straight. Just because we have achieve a best time, it doesn't always reveal improvements in the same area of the track. I have seen cars with aero carry more speed from the start of turn 2 through the esses and achieve a similar, if not faster top speed on the back straight than cars without aero. When I look my absolute best lap time at WGI I can see a delta on top speed range from 137 to 134 without aero (albeit a completely different car but you get the idea). This is why I suggest not to isolate a single lap when it comes to aero. I hope that makes sense.
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