Evaluate my track alignment specs 997.1
09-06-2015, 11:08 AM
#31
Those alignments specs worked great. Car was very balanced. Strange how it was loose and nervous on the NT01 and balanced and planted on the Pirelli DH, like two completely different cars.
Sway bar one from full stiff in front and middle hole in rear. Also found the car way more stable and forgiving on the non sport pasm shock settings. Sport makes the car too stiff and the bouncy rear brakes loose easily.
Ran my new personal best at COTA 2:27 with a passenger and a few small mistakes
Sway bar one from full stiff in front and middle hole in rear. Also found the car way more stable and forgiving on the non sport pasm shock settings. Sport makes the car too stiff and the bouncy rear brakes loose easily.
Ran my new personal best at COTA 2:27 with a passenger and a few small mistakes
(especially in the heat)The non-Sport setting on the .2RS is too soft, but I think they softened up the setup on the .2s.
09-08-2015, 10:43 AM
#32
Drifting
Thread Starter
Haven't driven a .2 but with the softer setting on the .1 you can feel the rear of the car squat into the corner and push off when you roll onto the gas vs. bouncing and breaking traction with the PASM in sport.
09-10-2015, 02:03 PM
#33
This is the fastest alignment for 997.3 GT3 (997.2 GT3 that holds absolute track record for Porsche Club Challenge in its class)
Front:
-3.8 deg camber 3 mm total toe in, softest bar
Rear:
-3.2 deg camber 6 mm total toe in, middle bar
The car has no modification in Cup2 tires
Lowest ride height possible without tire rubbing in corners.
Front:
-3.8 deg camber 3 mm total toe in, softest bar
Rear:
-3.2 deg camber 6 mm total toe in, middle bar
The car has no modification in Cup2 tires
Lowest ride height possible without tire rubbing in corners.
09-10-2015, 04:33 PM
#35
Rennlist Member
you can run toe in, it will make the car a bit more stable at straight line speed, but probably intro some push. most gt drivers like 0 front toe or a very very slight amount of toe out - and I prefer 0. I'm not baller enough to handle a turn in with toe out.
09-10-2015, 06:11 PM
#36
Front toe have very little effect on lap times. You set up front toe the way you like, its all good. I tried front toe from 8 mm out to 3 mm in, experimenting right at the track. The differences in lap times were withing 0.2 second.
Rear toe even 1 mm makes difference
Rear toe even 1 mm makes difference
09-12-2015, 10:41 AM
#38
This is the fastest alignment for 997.3 GT3 (997.2 GT3 that holds absolute track record for Porsche Club Challenge in its class)
Front:
-3.8 deg camber 3 mm total toe in, softest bar
Rear:
-3.2 deg camber 6 mm total toe in, middle bar
The car has no modification in Cup2 tires
Lowest ride height possible without tire rubbing in corners.
Front:
-3.8 deg camber 3 mm total toe in, softest bar
Rear:
-3.2 deg camber 6 mm total toe in, middle bar
The car has no modification in Cup2 tires
Lowest ride height possible without tire rubbing in corners.
09-12-2015, 01:26 PM
#39
That was Nordschlife setup, for high speed corners stability and when the car gets air-born at 120+ mph. For flat tracks you can do just a little bit less toe and stiffest rear bar(front softest). Camber is the same.
09-12-2015, 05:12 PM
#40
That's interesting, I've been to the nordschleife quite a bit over the last 7 years in my car and I've never tried running more than 4mm rear total toe, and just a little front toe in.
I may try more rear toe and see how that feels when I go in 3 weeks.
Also I've always run my roll bars one off soft at the rear and one off full stiff at the front to aid getting the power down out of corners. It may be a bit different as my car is a gt2 but I may try adjusting the bars to see how it feels as well
I may try more rear toe and see how that feels when I go in 3 weeks.
Also I've always run my roll bars one off soft at the rear and one off full stiff at the front to aid getting the power down out of corners. It may be a bit different as my car is a gt2 but I may try adjusting the bars to see how it feels as well
09-13-2015, 01:28 PM
#43
Can't argue with the lap time, going well there.
Do you use the car on the street as we?
Reason I ask is I have to drive over 500 miles to get to the nordschleife and wouldn't want to kill the rear tyres before I get there as I've always thought high toe in causes extra wear.
Do you use the car on the street as we?
Reason I ask is I have to drive over 500 miles to get to the nordschleife and wouldn't want to kill the rear tyres before I get there as I've always thought high toe in causes extra wear.
09-13-2015, 01:44 PM
#44
Yes, you will kill your rear tires with that alignment. I would recommend go to the alignment shop in UK and make two different alignments for track and street and make marks for each setting on the eccentric bolts in the rear. For front just put zero toe and track alignment. Drive with street alignment to Nordschleife then go to any garage and ask them to match your track marks. Anybody can do it for 20 euros or so. On the way back switch back to street. That what I do.