Discussion
Mid ARB's front and rear, max geo as standard, Max braking 1.36g, lateral left 1.43, lateral right 1.49 .... and ran the nearside tyres at 31psi and the drivers side at 30psi after two cooling down laps.
Whilst the near side tyres are wearing more on the shoulder, the rest of the tyre is even. I wouldn't change anything for combined track and road.
What do my passengers think ?
Whilst the near side tyres are wearing more on the shoulder, the rest of the tyre is even. I wouldn't change anything for combined track and road.
What do my passengers think ?
ravon said:
I'll be in the plain old white one, and i'd love to meet you, as I've followed your posts for years ! We both use the very wonderful Tony Littlejohn for special projects I believe .
Will definitely try and catch up with you chaps but more likely to be during lunch as I have around 30 rides to do during the day. You will see the car in our garage. Either way, I'll be mincing about in a race suit with 'TMuk' plastered all over it so you won't miss me. ChrisW. said:
Mid ARB's front and rear, max geo as standard, Max braking 1.36g, lateral left 1.43, lateral right 1.49 .... and ran the nearside tyres at 31psi and the drivers side at 30psi after two cooling down laps.
Whilst the near side tyres are wearing more on the shoulder, the rest of the tyre is even. I wouldn't change anything for combined track and road.
What do my passengers think ?
As a grateful passenger the car felt planted. No discernible under or oversteer unlike mine which needs more camber. Whilst the near side tyres are wearing more on the shoulder, the rest of the tyre is even. I wouldn't change anything for combined track and road.
What do my passengers think ?
Tim (Yellow GT4) on the other hand with full shims, rear control arms etc was more aggressive but equally planted unless provoked into oversteer on Redgate #looking through side window towards the next bend...
Edited by BubblesNW on Tuesday 7th June 23:09
ChrisW, I really enjoyed my passenger laps with you, it was such a contrast in driving styles ! You coming from a sprint race back ground and me from a road craft and endurance race background, just shows there are plenty of ways of ending up with much the same thing ! Very good to meet you !
BubblesNW said:
As a grateful passenger the car felt planted. No discernible under or oversteer unlike mine which needs more camber.
Tim (Yellow GT4) on the other hand with full shims, rear control arms etc was more aggressive but equally planted unless provoked into oversteer on Redgate #looking through side window towards the next bend...
I was running higher pressures (32f 34r) after a cooling down lap - in the future I would drop a little further although like most I was taking air out after every session to cope with ever and ever increasing track temps.Tim (Yellow GT4) on the other hand with full shims, rear control arms etc was more aggressive but equally planted unless provoked into oversteer on Redgate #looking through side window towards the next bend...
Edited by BubblesNW on Tuesday 7th June 23:09
Geo wise I am not that aggressive, full settings in use at https://www.getpatina.com/media/38SqA19HkL
Good to meet those I did, apologies I had to run at lunch, had meetings in the afternoon and was getting a little fed up with the red flags, Although looking at Jack's video I should have persevered as the track looks empty!
Sandy59 said:
Just curious if you're happy with your non factory set up, seem to remember you said the one you had was a good starting point, implying it might be tweaked in future ??
yep it needs a tweak if I want to go faster on track, or I drive it Harris style and power slide it out the bends is the other option lol.It's a hard choice as I like my car much better than stock on the road atm, but it's not balanced enough on track.
DO I want to chase times for the odd track day ? not sure I do, until I am on one of course then you want a faster set up lol.
La Source, as I said yesterday, it looks like driving style plays a huge part.
David (MrD) is running loads of camber, spacers blah blah blah and still rolling his front tyres badly.
I'm running full stock settings on camber and bars and not having the same problem. But I'm driving my GT4 how I drive the GT3. Loads of trail and late throttle application once I've got the car rotated. I'm sure there is a sweeter/faster spot somewhere in the middle, but I love the balance of the car how it is. It feels playful without being intimidating.
The pyro shows it working the fronts very evenly (as corroborated by very even wear) but the outsides of the rears are a touch hotter than the insides, meaning I'm working the rears more. And that's how it feels in the car. Like the rear is working more. Feels lovely, to be honest.
Chris W, not entirely sure those g readings can be relied upon unless you are doing something SERIOUSLY funky on track! The Harry's Laptimer display is showing consistant 1.1-1.2g figures in most bends and this would seem to be a bit more realistic for these cars. I think you'd need to download the full plot for a lap on the Porsche system and see where the spikes are coming from.
David (MrD) is running loads of camber, spacers blah blah blah and still rolling his front tyres badly.
I'm running full stock settings on camber and bars and not having the same problem. But I'm driving my GT4 how I drive the GT3. Loads of trail and late throttle application once I've got the car rotated. I'm sure there is a sweeter/faster spot somewhere in the middle, but I love the balance of the car how it is. It feels playful without being intimidating.
The pyro shows it working the fronts very evenly (as corroborated by very even wear) but the outsides of the rears are a touch hotter than the insides, meaning I'm working the rears more. And that's how it feels in the car. Like the rear is working more. Feels lovely, to be honest.
Chris W, not entirely sure those g readings can be relied upon unless you are doing something SERIOUSLY funky on track! The Harry's Laptimer display is showing consistant 1.1-1.2g figures in most bends and this would seem to be a bit more realistic for these cars. I think you'd need to download the full plot for a lap on the Porsche system and see where the spikes are coming from.
Edited by jackwood on Wednesday 8th June 14:59
jackwood said:
La Source, as I said yesterday, it looks like driving style plays a huge part.
David (MrD) is running loads of camber, spacers blah blah blah and still rolling his front tyres badly.
I'm running full stock settings on camber and bars and not having the same problem. But I'm driving my GT4 how I drive the GT3. Loads of trail and late throttle application once I've got the car rotated. I'm sure there is a sweeter/faster spot somewhere in the middle, but I love the balance of the car how it is. It feels playful without being intimidating.
The pyro shows it working the fronts very evenly (as corroborated by very even wear) but the outsides of the rears are a touch hotter than the insides, meaning I'm working the rears more. And that's how it feels in the car. Like the rear is working more. Feels lovely, to be honest.
Chris W, not entirely sure those g readings can be relied upon unless you are doing something SERIOUSLY funky on track! The Harry's Laptimer display is showing consistant 1.1-1.2g figures in most bends and this would seem to be a bit more realistic for these cars. I think you'd need to download the full plot for a lap on the Porsche system and see where the spikes are coming from.
That's not quite correct :-( I am not rolling off the tyre , chris is and had to add PSI to tame it ! I am using all the camber I have, it's not rolling off ! , no one should have to put a car on it's nose to get round the old hairpin, it's a fast bend ! and Copppice !David (MrD) is running loads of camber, spacers blah blah blah and still rolling his front tyres badly.
I'm running full stock settings on camber and bars and not having the same problem. But I'm driving my GT4 how I drive the GT3. Loads of trail and late throttle application once I've got the car rotated. I'm sure there is a sweeter/faster spot somewhere in the middle, but I love the balance of the car how it is. It feels playful without being intimidating.
The pyro shows it working the fronts very evenly (as corroborated by very even wear) but the outsides of the rears are a touch hotter than the insides, meaning I'm working the rears more. And that's how it feels in the car. Like the rear is working more. Feels lovely, to be honest.
Chris W, not entirely sure those g readings can be relied upon unless you are doing something SERIOUSLY funky on track! The Harry's Laptimer display is showing consistant 1.1-1.2g figures in most bends and this would seem to be a bit more realistic for these cars. I think you'd need to download the full plot for a lap on the Porsche system and see where the spikes are coming from.
The thing is every one is happy with their own style so no one will ever agree.
but Camber is faster that's a given, other wise the cup cars would only have -1.5 and stand them on their nose into every bend !
35psi in the rear gave me a Pyro tyre reading of inner 57.7/58.2/59.5 that's coming in hot , no cool down.
I tried softer at Anglesey and had to pump them up a bit as they go a greasy feeling.
32/35 psi was spot on for my cars geo and that was a true reading as no tyres on the limit squealing out the bends !
remember Chris PSI is after 2 cooling down laps !
Edited by Porsche911R on Wednesday 8th June 19:56
Sorry, don't understand. You were showing me your front tyres and pointing out how far over the shoulder they had worn.
So, again, confused, are we now talking about what's fastest, or how to mitigate front tyre wear?
You could have -4deg camber and still be slower than a guy with zero camber and a huge bag of skill.
Yes the point is being happy with what YOU have and what YOU want out of it. And that is where it should become what is best "for you" in "your opinion" rather than flatly stating that camber wins. Because for me, it doesn't. Right now. (I reserve the right to change my mind at any point...
)
What I can tell you is that you don't HAVE to modify your car, add shims, toe links, camber, etc, still run very decent times, and not destroy your tyres, if you just practice your art a bit and adjust your driving style slightly.
Or you can go the route of throw money at it.
Personally I find the route of self-improvement way way way more fulfilling. But I'm clearly in the minority in here. A lot of noise from the workman-blaming-tool-brigade as usual. Seems like few people are up for the challenge of improving themselves these days. Society all over though, I suppose.
So, again, confused, are we now talking about what's fastest, or how to mitigate front tyre wear?
You could have -4deg camber and still be slower than a guy with zero camber and a huge bag of skill.
Yes the point is being happy with what YOU have and what YOU want out of it. And that is where it should become what is best "for you" in "your opinion" rather than flatly stating that camber wins. Because for me, it doesn't. Right now. (I reserve the right to change my mind at any point...
)What I can tell you is that you don't HAVE to modify your car, add shims, toe links, camber, etc, still run very decent times, and not destroy your tyres, if you just practice your art a bit and adjust your driving style slightly.
Or you can go the route of throw money at it.
Personally I find the route of self-improvement way way way more fulfilling. But I'm clearly in the minority in here. A lot of noise from the workman-blaming-tool-brigade as usual. Seems like few people are up for the challenge of improving themselves these days. Society all over though, I suppose.
Jack, thanks for the feedback.
I am also running with the hypothesis that fastest speed and best tyre wear are possibly two separate things on the GT4.
I have found the std setup to be very fast. Unfortunately not had the pleasure of an empty track to test pace of the modified setup.
I was supposed to be busy tomorrow and didn't book the silverstone day. Not it looks like I'm free but it's sold out.
If anyone knows of a spare slot then please let me know
I am also running with the hypothesis that fastest speed and best tyre wear are possibly two separate things on the GT4.
I have found the std setup to be very fast. Unfortunately not had the pleasure of an empty track to test pace of the modified setup.
I was supposed to be busy tomorrow and didn't book the silverstone day. Not it looks like I'm free but it's sold out.
If anyone knows of a spare slot then please let me know
Porsche911R said:
... no one should have to put a car on it's nose to get round the old hairpin, it's a fast bend ! and Copppice !
? You have to brake for both corners, so you might as well brake later and in towards the apex.I've tried Donington in a few different cars and I always find the braking for the old hairpin pretty hairy - it feels like there is little time to get the car settled out of Craners before slamming on the brakes, so the chance to brake later for the hairpin (by trailing in a bit) is welcome.
Gassing Station | Porsche General | Top of Page | What's New | My Stuff