Where to find autocross events?
10-19-2009, 05:44 PM
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Where to find autocross events?
Well to introduce myself, I just purchased my first Z and I am really enjoying getting to know how the car handles. Been on some twisties and wow this car is so much better than I am.
Ill keep working on my revmatch downshifts and getting to know the dinamics and braking. Just loving every second behing the wheel, really weird when I get back in the tamoca now.
What is the best way to find autocross events in my area. I am in Wilmington DE?
Ill keep working on my revmatch downshifts and getting to know the dinamics and braking. Just loving every second behing the wheel, really weird when I get back in the tamoca now.
What is the best way to find autocross events in my area. I am in Wilmington DE?
10-19-2009, 06:26 PM
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http://www.sjr-scca.org/solo.html
Will I be ok with without prepping the car in any way? Just change my oil, stock tires and pressure?
10-19-2009, 07:11 PM
#6
Thanks for the quick reply, found the last event for a few months.
http://www.sjr-scca.org/solo.html
Will I be ok with without prepping the car in any way? Just change my oil, stock tires and pressure?
http://www.sjr-scca.org/solo.html
Will I be ok with without prepping the car in any way? Just change my oil, stock tires and pressure?
https://my350z.com/forum/autocross-r...a-sad-day.html
https://my350z.com/forum/autocross-r...-and-faqs.html
10-20-2009, 04:00 AM
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..check this website autoX4u.com. It has all events within 100 or so miles of you.
There is an event in Hershey PA (Sat and Sun) and at the Philly sports complex this Sunday.
There is an event in Hershey PA (Sat and Sun) and at the Philly sports complex this Sunday.
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10-20-2009, 05:28 AM
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What is the reasoning behind the higher pressure up front. I know it will effectively increase the vertical stiffness (spring rate) of the tire. But why up front and why lower it in the rain? I assume there are cold tire pressure, how do I then adjust the pressure maybe for a second run if I want to see the difference?
Thanks,
10-20-2009, 08:55 AM
#9
The front tires on the Z tend to take a beating on an autocross course. 30-35 psi with stock (lack of) camber could result in the fronts "rolling over" onto the sidewall.
In the rain, there is less traction and less latteral force on the tires. This allows/requires lower pressures.
And the pressures are for each run. Start with the pressures cold and adjust air pressure before each run as the tires heat up.
Most venues have air compressors on site, so you can go up or down with the tire pressure to experiment.
Before I had adjustable suspension components, I would use whatever pressures used all of the tread (without rolling over on the tire) as a starting point and then use pressure adjustments to try and "balance" the car's handling.
In the rain, there is less traction and less latteral force on the tires. This allows/requires lower pressures.
And the pressures are for each run. Start with the pressures cold and adjust air pressure before each run as the tires heat up.
Most venues have air compressors on site, so you can go up or down with the tire pressure to experiment.
Before I had adjustable suspension components, I would use whatever pressures used all of the tread (without rolling over on the tire) as a starting point and then use pressure adjustments to try and "balance" the car's handling.
Last edited by Z1NONLY; 10-20-2009 at 08:59 AM.
10-20-2009, 12:17 PM
#11
To add to what Z!ONLY said.
The venues available to me don't have compressors. So I will inflate my tires to cold pressures of 38psi front and 36 psi rear. By the time I get to the event, my fronts are about 42 and the rear close to 40. Then just before my first run, I'll adjust the pressures to 40 front and about 37 rear. On some days when it is really cold and my run group is second, I won't have to adjust the pressures down for the first run.
A cheap and easy way to check to see if you are rolling onto your sidewalls is to pick up some sidewalk chalk (Big Lots, Dollar Store, etc...). Chalk up the outer edge of your tires before a run and see how much is gone afterwards. If the chalk wears away down on the sidewall, you need more pressure. If the chalk is still there on the edge of the tread, then you need to soften the tires a bit. This isn't exact, but it is a good place to start and works pretty well for rookies like me.
The venues available to me don't have compressors. So I will inflate my tires to cold pressures of 38psi front and 36 psi rear. By the time I get to the event, my fronts are about 42 and the rear close to 40. Then just before my first run, I'll adjust the pressures to 40 front and about 37 rear. On some days when it is really cold and my run group is second, I won't have to adjust the pressures down for the first run.
A cheap and easy way to check to see if you are rolling onto your sidewalls is to pick up some sidewalk chalk (Big Lots, Dollar Store, etc...). Chalk up the outer edge of your tires before a run and see how much is gone afterwards. If the chalk wears away down on the sidewall, you need more pressure. If the chalk is still there on the edge of the tread, then you need to soften the tires a bit. This isn't exact, but it is a good place to start and works pretty well for rookies like me.
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