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Tracking / Autocross / HPDE / Drifting What these cars were built for!


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Old 04-28-2021, 10:11 PM   #141
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Welcome! Another MA local here, as a novice driver just getting your feet wet, focus on improving as a driver. Tire pressures would be where I'd start when you're ready, and that will be tire/course/setup depended really.

Alignment could use a bit more camber up front, and a touch of toe in - in the rear.

I've spent the last 2 seasons on STX prep level really just driving the car and fussing with tire pressures. Even then, I still feel like there's more time to be found in the seat.

You can usually find me out at Devens with various clubs. I haven't actually run with NER scca in the past year or so, but will start to attend now that the weather has broken. Hope to see you out there soon!
What would the toe in the rear do, I assume induce a bit of understeer? Is that generally favorable in autox ? Generally what tire pressures do you run at Devens in dry weather? What about in the wet?

Yea certainly hope to see you sometime this season. For now I've only ran with NER SCCA and proh will continue to do so for the rest of the season as the folks there, specially the instructors have been great.
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Old 04-29-2021, 12:05 AM   #142
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Rear toe in is stability and predictability, not necessarily under steer.

iirc Strano tries to zero out toe, more 'forward thrust' in theory, lots follow that advice but I've seen no testing that shows minor toe in negatively impacts speed and just adds confidence. If you're happy with rear stability as is leave zero toe, if it feels unstable add the toe in. Hypothesize, test, observe, repeat, but as above with only three events just get seat time.
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Old 04-29-2021, 03:04 PM   #143
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For all of you talking ride heights, how are you accurately/constantly measuring but to fender distances? Seems there is no "good way" to do it with a tape measure as you can't always start in the same place.

I have always used the bottom of the rim to put my tape measure on. its a repeatable spot for the tape measure

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Old 04-29-2021, 03:15 PM   #144
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For all of you talking ride heights, how are you accurately/constantly measuring but to fender distances?

Seems there is no "good way" to do it with a tape measure as you can't always start in the same place.
I thought the same thing. I assume something like this might make things easier.
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Old 04-29-2021, 10:52 PM   #145
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For all of you talking ride heights, how are you accurately/constantly measuring but to fender distances? Seems there is no "good way" to do it with a tape measure as you can't always start in the same place.

I have always used the bottom of the rim to put my tape measure on. its a repeatable spot for the tape measure
I do this. On the scales when everything is level and all. Not perfect but seems consistent over time. I do check that the tape is plumb too since it can look so and add 1/4" so easily.
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Old 04-30-2021, 08:23 PM   #146
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Just curious how many of you do the pedal dance for autox. The driver who a national caliber driver and only has a mildly prepped STX car(olihns shocks , header, flash tune ) only uses the manual disengagement of nanny’s and nearly got FTD and pax after taking three years off. He had read that the pedal dance affects breaks. Any thoughts. I do the pedal dance and do not notice any issues. I’m only average or mildly above average driver
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Old 04-30-2021, 10:03 PM   #147
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Just curious how many of you do the pedal dance for autox. The driver who a national caliber driver and only has a mildly prepped STX car(olihns shocks , header, flash tune ) only uses the manual disengagement of nanny’s and nearly got FTD and pax after taking three years off. He had read that the pedal dance affects breaks. Any thoughts. I do the pedal dance and do not notice any issues. I’m only average or mildly above average driver
I usually do it for autocross. I always do it for the track. The issue I've heard about not doing it is that you may end up having ABS engage at a time when you really don't want it.

I'm sure there are those on here that can explain it a lot better.
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Old 04-30-2021, 10:06 PM   #148
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Just curious how many of you do the pedal dance for autox. The driver who a national caliber driver and only has a mildly prepped STX car(olihns shocks , header, flash tune ) only uses the manual disengagement of nanny’s and nearly got FTD and pax after taking three years off. He had read that the pedal dance affects breaks. Any thoughts. I do the pedal dance and do not notice any issues. I’m only average or mildly above average driver
Every time. Only exception is if it won’t take because the oil temp is too low as of my first run. Same thing for track days. I *hate* not being in complete (ok, “nearly” complete) control of the car- mistakes and all.
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Old 05-02-2021, 02:38 PM   #149
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I have never pedal danced.
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Old 05-02-2021, 08:55 PM   #150
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I have never pedal danced.
Do just use the buttons for autox? Any issues with the nannies kicking in.
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Old 05-03-2021, 01:35 AM   #151
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Yes, just a long press to turn everything off. Never had an issue at all.
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Old 05-03-2021, 07:24 AM   #152
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For the past 4 years of ownership all I've done is long press. I'd say it's worked out okay for me
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Old 05-03-2021, 08:43 AM   #153
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Just a long press for me at autocross.
The only times any of systems have kicked in, the run was ruined anyway or sometimes getting the car stopped after the finish.
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Old 05-03-2021, 09:50 AM   #154
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Long press here.

When I ran SSC in 2018-19, I would pick up the inside rear on some tight off camber turns and that usually lead to some CPU intervention. But it wasn't in a bad way that I felt impacted my times.
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