Getting into the data with Porsche Track Precision
12-08-2021, 07:37 PM
#1
Burning Brakes
Thread Starter
Getting into the data with Porsche Track Precision
So I have finally dialed in a good template in racerender that I can use with Porsche Track Precision and my GT4. I have data for wheel slip and understeer/oversteer visualised, but the problem is these are somewhat arbitrary units of measure, and I don't know what actually constitutes an optimal slip angle and when it has gone too far.
I am using the OEM Michelin Cup 2 tyres, and am keen to know what their optimal slip is in traction zones and yaw through corners? Some meaning behind the understeer and oversteer numbers would be good also.
If I can quantify what these optimal slip angles are on these tyres I will be able to add the ideal numbers to my data overlay and be able to do a better job of identifying areas where I am overdriving/underdriving and make better choices with setup and alignment changes. So far I am doing most of it by feel but if I can shortcut that with some solid numbers then that will help a lot. I think this is how PTP defines its "Drive to your limit" measure but I don't know how that number is actually derived so it's not very useful to me.
Here's a video of my latest hot lap. If anyone knows what the numbers coming out of PTP actually mean then please share so we can understand it a bit better!
I am using the OEM Michelin Cup 2 tyres, and am keen to know what their optimal slip is in traction zones and yaw through corners? Some meaning behind the understeer and oversteer numbers would be good also.
If I can quantify what these optimal slip angles are on these tyres I will be able to add the ideal numbers to my data overlay and be able to do a better job of identifying areas where I am overdriving/underdriving and make better choices with setup and alignment changes. So far I am doing most of it by feel but if I can shortcut that with some solid numbers then that will help a lot. I think this is how PTP defines its "Drive to your limit" measure but I don't know how that number is actually derived so it's not very useful to me.
Here's a video of my latest hot lap. If anyone knows what the numbers coming out of PTP actually mean then please share so we can understand it a bit better!
Last edited by Reedy; 12-08-2021 at 10:02 PM.
12-08-2021, 09:08 PM
#2
Rennlist
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-Peter Krause
www.peterkrause.net
www.gofasternow.com
"Combining the Art and Science of Driving Fast!"
Specializing in Professional, Private Driver Performance Evaluation and Optimization
Consultation Available Remotely and at VIRginia International Raceway
02-01-2022, 03:52 PM
#3
Hi! Any chance you're willing to share your race render template? I struggled to create one but I was rushing. Couldn't even find room to define all the custom parameters.
I'd have to take a look at the data to try and interpret some of these values. Generally speaking, understeer and oversteer are defined in terms of front:rear slip angle ratios, > 1 is understeer and < 1 is oversteer. I don't know if that's the definition they're using in the app.
I'd have to take a look at the data to try and interpret some of these values. Generally speaking, understeer and oversteer are defined in terms of front:rear slip angle ratios, > 1 is understeer and < 1 is oversteer. I don't know if that's the definition they're using in the app.
02-02-2022, 01:38 AM
#4
Burning Brakes
Thread Starter
Hi! Any chance you're willing to share your race render template? I struggled to create one but I was rushing. Couldn't even find room to define all the custom parameters.
I'd have to take a look at the data to try and interpret some of these values. Generally speaking, understeer and oversteer are defined in terms of front:rear slip angle ratios, > 1 is understeer and < 1 is oversteer. I don't know if that's the definition they're using in the app.
I'd have to take a look at the data to try and interpret some of these values. Generally speaking, understeer and oversteer are defined in terms of front:rear slip angle ratios, > 1 is understeer and < 1 is oversteer. I don't know if that's the definition they're using in the app.