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997 GTS vs 991 turbo track battle

Old 05-19-2017, 01:14 PM
  #31  
1990nein
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Old 05-19-2017, 01:26 PM
  #32  
Alexandrius
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If you are refering to your video, your slip at 1:11 was exessive and was not the fastest way through that turn, 100% guaranteed man.

The racing and track line for a 911 is essentially the same as for all other cars in it's class. The main difference is with a 911 you want to use much more trail braking to rotate through turns better, because you won't have the same front wheel traction a car with the engine in front will, IE. a BMW m3. Thus, you should attempt make up for that shortcoming with excellent trail braking. All of that information DOES NOT CHANGE THE LINE. It simply changes how you STAY on the line.

But in the world of racing/track driving, ALOT of trail braking looks relatively tame on video but FEELS excessive in the seat of your pants. In your video, based on sight alone, I can tell you are rotating wayyy too much and not taking advantage of using the whole track to carry MORE SPEED.

So I wouldn't argue that what you are doing is the fastest, but you can say it's the "funnest" for you.

I'm just going to re-iterate here that you are over-driving a street car.
Old 05-19-2017, 04:46 PM
  #33  
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Old 05-19-2017, 05:54 PM
  #34  
Alexandrius
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The things you say are implicating the things I said in bold. If you can't see that yourself then you are a lost cause. The line happens? Your telling me you don't choose the trajectory of your car? Is that why you often don't take the correct line and yet declare "that is how you drive a 911." LoL.

Those videos do not apply to you. They are purpose built race cars with totally different dynamics than your GTS. They are lighter, have tons of power for their weight, have either way more grip in tires (2nd vid) or WAY less grip in tires (1st video). That dude drove that yellowbird with seriously old school tires.

If you notice, the times they do have "moments" it isn't scrubbing speed like yours is, it's good rotation (2nd video, the dude rarely scrubs speed), and in the case of the yellowbird it's sometimes over-driving in a car that is way less stable than yours that has a high chance of killing the dude.

You can't use those videos as an example of how to drive your GTS...it just isn't comparable at all.

Anyways, if you agree your overdriving I guess I don't have any further argument.
Old 05-19-2017, 05:56 PM
  #35  
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Old 05-19-2017, 09:54 PM
  #36  
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Old 05-19-2017, 11:42 PM
  #37  
SpeedyD
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That was interesting to watch
Old 05-20-2017, 01:37 AM
  #38  
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I want to understand more about what you mean by "the line happens behind you". The line is the predefined fastest way around a track. It changes with conditions. It's your job to stay on it and manage whatever car you are driving, understanding its idiosyncrasies and reacting to them, controlling them to get it to stay the line.

If you deviate from the line, you are losing time.

Your point about needing to shuffle hands because of the buttons at 9 and 3 is a point well made. But it's a handicap and you will be slower because of it.

If you are out there having fun and less concerned with lap times then whatever 'line' you are on is the one you (and you alone) want to be on. That's what I'm taking away from "the line happens behind you". Is that what you're trying to say? Because your comments right now are conflicting and I'm trying to grasp a point from them.
Old 05-20-2017, 01:17 PM
  #39  
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Originally Posted by Pho King Fast
Here’s the alignment sheet. For front toe I think I'll keep it at -.02; it's got just enough feedback and responsiveness, and it’s not wandering on the highways at all. In regards to camber, I used to run maxed all around (-1.1f,-1.8r). This time I tried -1.6r, just to see it from another perspective. I’ve read that other 997 drivers like to keep the camber delta within .5. I can’t help but feel like something is missing – keep in mind part of this could be due to new/different tires. Next alignment for the rear I’ll likely go back to -1.8r, and maybe .33 toe to see if I can get a better thrust out of slip/slide.

NYST is a gem. The track is fun, and the people who work there are awesome! The marshalls will pull you in if you put 2+ wheels off, but only for a chat just to make sure you understand what happened and why it happened. Otherwise they aren’t there to hound you for making mistakes or having fun. There are so many trees around, people seem to know better than to do stupid ****.
Yea with a stock setup the most camber you'll get up front is a bit more than -1 which isn't ideal for track duty. I think you'll have to just put up with understeer on braking/corner entry and compensating with trying to provoke the rear to get the car to rotate. Obviously it will be slower than a good alignment setup but until you get GT3 LCA's or something, it'll have to do.

I run -2.7 up front (9.3 caster), -1.8 rear camber, 0 toe up front and slight toe-in at the rear. Car feels extremely stable (with 245/305 f/r tires), turn in is great with no push unless I've gone in too hot. Don't need too much negative camber in the rear since it's multilink and will gain negative camber as it compresses anyway. GT3 lower control arms are a must if you want to track your street Carrera imo.

As for your allusions to Senna and Alonso... I'm going to assume you're just joking. We're all just amateurs driving our street cars in the end. If you do have racing experience, I'd love to see some videos of those.

I know the title was probably made in jest, as a properly driven 991 Turbo would kill a 997 GTS. Here's a video of me chasing a C7 Z06 on a crappy track (1st time there for me) but it just shows the carnage of what happens in the straights. He should also be faster than me in the corners as well but again, this is NOT racing, we're all amateurs on street tires and I believe his transmission was overheating since it was quite a hot day. Still, its like warp-speed on the straights! (I'm also in a 997 GTS coincidentally)

Last edited by scorcherjf; 06-14-2017 at 07:28 PM.
Old 05-20-2017, 07:15 PM
  #40  
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Old 05-23-2017, 12:26 PM
  #41  
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This is what I think of while I watched the NYST video.

https://en.wikipedia.org/wiki/Jounce

And there is a lot of jouncing.
Old 05-23-2017, 02:57 PM
  #42  
drcollie
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Pho King Fast:

A friend sent me this video and your link, and you have some work to do on your driving. Take this as constructive, not criticism, I've been doing track days since 1996 ...

You need a good Instructor to show you technique, you don't yet have it. You are trying to go fast, but you are ignoring what the car is trying to tell you and instead using the throttle to attempt to overcome that poor technique. In the quest for speed, you haven't mastered balance and input, which is best done in a slower (much slower) car such as a Miata. I see this often with students, and its not easy to get back to the basics as ego often gets in the way. If you ever want to improve your track skills - that's the path you need to take.

Last edited by drcollie; 05-23-2017 at 04:55 PM.
Old 05-23-2017, 06:17 PM
  #43  
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Dunning–Kruger effect
Old 05-23-2017, 09:10 PM
  #44  
Falcondrivr
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Originally Posted by drcollie
Pho King Fast:

A friend sent me this video and your link, and you have some work to do on your driving. Take this as constructive, not criticism, I've been doing track days since 1996 ...

You need a good Instructor to show you technique, you don't yet have it. You are trying to go fast, but you are ignoring what the car is trying to tell you and instead using the throttle to attempt to overcome that poor technique. In the quest for speed, you haven't mastered balance and input, which is best done in a slower (much slower) car such as a Miata. I see this often with students, and its not easy to get back to the basics as ego often gets in the way. If you ever want to improve your track skills - that's the path you need to take.
^^^^ This ^^^^
You would not progress to solo in my region driving like your video.
Old 05-23-2017, 11:54 PM
  #45  
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