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  #51  
Old 04-09-2019, 11:02 AM
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Quote:
Originally Posted by JoeG View Post
I think rates of progression, assuming vehicle performance is constant, are highly dependent on seat time, coaching and self-development. Has anyone else done a similar exercise?
yes. seat time and coaching make the difference. self-development you can go blind on, so good notes matter but not much else. put a pro/coach/top end club racer in your car consistently (weekend after weekend after weekend) and you can progress much much much faster

my coach and I have done thousands of miles together. you have to like one another at least most of the time haha
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  #52  
Old 04-09-2019, 11:46 AM
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Nice. With that linear progression you should be at a 0 second lap time in a few years
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  #53  
Old 04-09-2019, 01:11 PM
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Driving is Logarithmic progression in cost per unit of gain and regressive in lap time gain. Each each unit of gain costs 10x the last one and gives one tenth the previous gain
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  #54  
Old 04-09-2019, 04:05 PM
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Originally Posted by Vicegrip View Post
Driving is Logarithmic progression in cost per unit of gain and regressive in lap time gain. Each each unit of gain costs 10x the last one and gives one tenth the previous gain
You approach the wall asymptotically but unlike Zeno you will reach it
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  #55  
Old 04-09-2019, 07:01 PM
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My personal opinion. Unless you are data logging and making scientific analysis, lap times only matter for the session you just did. Don't compare session to session. So many variables you can't control can make you think you are doing better or worse if you compare session to session and event to event.
I realize you try to establish a baseline from the car, but the track is different, weather/temps differ, etc.
On the flip side, no substitute for seat time.
Also, I don't time laps because the high numbers make me sad.
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  #56  
Old 04-09-2019, 08:57 PM
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Quote:
Originally Posted by BlackTalon View Post
Have there been any other changes? (i.e., brake pad compounds, tires, suspension, seats/ harnesses, etc.)
PFC08 pads and GT3 MC since Green run group. Only change to the 987.2 (including pads and MC) were seats/harness/Guard LSD. NT01 tires added 37 months post HDPE. I think they are about 1-2 seconds faster vs PS2s.
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  #57  
Old 04-09-2019, 09:04 PM
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Quote:
Originally Posted by racer View Post
I have not. Since I drive "flat out" all the time, its impossible that my lap times have ever improved. I was already the fastest of all time

But no. Consumer Data (outside of a stopwatch) didn't exist 25+ years ago when I started DE.

That said, I would also say that it was your car.. No doubt a 987.2 is 10% faster than a 987.1.

And yes, all that said, "seat time" is key to improvement. Using data to improve the results of seat time are simply a wonderful aid that was not as common years ago.
I agree that the car makes a difference and there are many limitations in this analysis but I don't know any other way to monitor my driving skills based on available data without periodic assessment by a coach. In the absence of this analysis assessing my driving skills becomes very subjective.
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  #58  
Old 04-09-2019, 09:09 PM
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Quote:
Originally Posted by Fumes View Post
yes. seat time and coaching make the difference. self-development you can go blind on, so good notes matter but not much else. put a pro/coach/top end club racer in your car consistently (weekend after weekend after weekend) and you can progress much much much faster

my coach and I have done thousands of miles together. you have to like one another at least most of the time haha
I wanted to attend the April 11th Go FASTER at VIR event but too busy with other stuff. It would be great to have a similar event at Summit which is local for me. If I spent thousands of miles with a coach my wife would leave me
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  #59  
Old 04-09-2019, 09:13 PM
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Originally Posted by vranko View Post
Nice. With that linear progression you should be at a 0 second lap time in a few years
This was your rate of progression. Don't laugh but I did use the line equation to estimate how long it would take for a 1:20 lap time at Summit Main
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  #60  
Old 04-09-2019, 09:16 PM
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Quote:
Originally Posted by Vicegrip View Post
Driving is Logarithmic progression in cost per unit of gain and regressive in lap time gain. Each each unit of gain costs 10x the last one and gives one tenth the previous gain
I think its dependent on where one is on the learning curve and what you state is probably more relevant to highly advanced drivers.
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