jstein77
jstein77 SuperDork
1/20/14 7:47 a.m.

You'd think after 31 years of autocrossing, I'd have done and seen it all, but yesterday proved me wrong.

We had an autocross yesterday at Deland Airport, and attendance was strong with 115 entries, 30 of them novices. The day started out cold, but quickly warmed to the mid-60's as the sun rose. It was promising to be a beautiful event. I was instructing for the first two heats, and having a blast driving a variety of novice's cars. The fastest of those was a turbocharged Miata, which was a handful but very quick.

Then came the third heat, in which I was scheduled to race. A line of light showers came through just before the heat started, which wet the pavement just enough to turn it into a sea of slimy mud. My slicks, which were already below their optimum temperature, had no purchase on the slime at all, causing me to spin on my first run. I dropped a couple of pounds out of the back tires and took a tentative second run, running a clean 47.8. This was a decent time, as few were below 50, but I knew there was lots more out there since I had run a 47.0 in the turbo Miata. I was sure I could dip into the 45's on my third run, so I went out and attacked the course. Things were going well until about a third of the way through, when I suddenly found myself sliding backwards at 50 mph. I even commented out loud (heard on the video), "You've got to be kidding!" I was fully set in the corner when the tail came around, a time when I'm usually fighting understeer. I still don't know what initiated the slide, unless I just hit an especially slimy part of the course without seeing it. I dropped a couple more pounds out of the back and ran an even more tentative 48.1 on my last run, nicking a cone for good measure.

So this was the first time I've ever spun twice at the same event, and the first time I ever beat my best time with a novice's car. Even after three decades, this sport can still throw surprises at me. I'll post some video of the mayhem as soon as I upload it.

Bobzilla
Bobzilla PowerDork
1/20/14 8:01 a.m.

I've spun other peoples cars 3 times on the same run. It was a CTS-V sedan wearing worn out Bridgestone RE-11's. First turn, spun. HAlfway through my right leg twitched (no lie) spun. Coming in to the finish, spun. thankfully it was just our final fun event of the season.

jstein77
jstein77 SuperDork
1/23/14 6:50 a.m.

Here's some video of me struggling for grip.

Spin city

bentwrench
bentwrench New Reader
1/23/14 7:00 a.m.

Stay away from the novices.

They're contagious!

jstein77
jstein77 SuperDork
1/23/14 7:39 a.m.

Oh, it had nothing to do with the novices. Just a quirk of the weather at just the wrong time.

Vigo
Vigo PowerDork
1/23/14 9:19 a.m.

I have been in a few situations in autocross (in different cars and different drivers including me) where the back end of a car came out for apparently no reason. I know i'm not the only one because i've driven with people who were doing fine, 'randomly' spun, and neither one of us could figure out why. And then you straighten out and finish your run and it never happens again. You don't learn from that, you just get paranoid.

I think it does only happen with either cold tires/pavement or with surface debris. That part makes sense. The weird thing is that it sometimes happens when you're not turning hard AT ALL, or you're in a steady state turn that's already been working fine and then BAM now it doesnt. Personally, after the last couple events i drove (a couple years ago now!) that were cold and/or rainy, i told myself i'd never bother going to an event that wasnt guaranteed good weather. I don't want to pay to drive softer on a track then i do on the street the day before or the day after.

hotchocolate
hotchocolate New Reader
1/23/14 9:44 a.m.

Looks like you had a blast. That iswhat counts. On sunday we had a heat wave of mid 30s today as I type this it is -15. Really wish we had all year autox.

Regarding the stepping out, that experience will come in handy one day--if you use that lot regularly. I know at one of our venues, there are a couple of spots that are less grippy. Their locations are firmly filed away in my cranium. Under competition conditions I know where not to push it.

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