mid-ohio crash
#41
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Originally Posted by ADMAN
Reminds me when my buddy's rotor broke at Buttonwillow...
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You know... he seems to be one of (probably) more than a few amazing rides through that corner. Just check out these two (most of you should recognize the first one)
http://www.youtube.com/watch?v=hl2UUunlI2Q
http://www.youtube.com/watch?v=fBiXLikp2SM&NR=1
http://www.youtube.com/watch?v=hl2UUunlI2Q
http://www.youtube.com/watch?v=fBiXLikp2SM&NR=1
#43
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Looking at the videos and the track map, the trap seems to be wide and deep at the end of the straight, but if you follow the corner and then slide out late the trap narrows significantly. There is also quite a bump mid to late corner just off track. So if you decided to go off there, decide early.
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I've been reading some of the discussions of how the 350Z handled the wreck and it appears that the cage wasn't stressed much at all. Chris Childs (the guy who did the race prep) will be getting the car next week but from his and Jeff's (the driver) once over it looks like there is one dent on the roof and that's it. While the cage did reinforce the center section of the car, the majority of the accident force was handled by the 350Z chassis itself. Both doors still opened and closed after the wreck. I give a lot of credit to Nissan and their engineering staff.
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Originally Posted by jmark
I read it was a SCCA Regional race and he was leading T2 when this happened.
http://sccaforums.com/forums/thread/320303.aspx
http://sccaforums.com/forums/thread/320303.aspx
#47
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Originally Posted by mw9
what type of racing is the T2 class
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Originally Posted by mhoward1
It's a wheel to wheel show room stock class. The cars are stripped and Safety equipment is installed, but that's about it. (wink)
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Touring 2 is a SCCA class with limited preperations rules, but different from Showroom Stock in that some cars can do more prep than others but there is an attempt to equalize them all. SCCA hasnt been doing a good job of that since they allowed turbo cars. The Z car is allowed up to 9 x 18 and 10 x 18 wheels, a larger front and rear sway bar, finned differential cooler, canister shocks, different springs front and rear. You cant strip out the interior, most of the plastic has to stay in as does the passenger seat, carpet and door glass unless you build the cage to protrude into the doors. You can see that in the wrecked car. You can add a racing seat if you want. You also need full seat belts, window net, fire extinguisher, etc. The touring rules also let you up-date or back-date the car. This means if you have a 2003 standard car you can add the track car front and rear Brembo brakes and also install all of the uprev 2006 + motor parts for a little more horsepower.
In showroom stock you have to leave everything in the car and you cant up-date. The preperation rules are very restricted but you need all the safety stuff.
Click on www.scca.com and click club racing and look under rules and regulations for the heading Touring. At the end of that section are specific rules for specific cars.
In showroom stock you have to leave everything in the car and you cant up-date. The preperation rules are very restricted but you need all the safety stuff.
Click on www.scca.com and click club racing and look under rules and regulations for the heading Touring. At the end of that section are specific rules for specific cars.
#51
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Originally Posted by z-u-later
The driver mentioned brake failure . . . does anyone know, or read in one of the other forums, if he had Brembos? If T2 is stock, I assume he is not allowed to upgrade to a BBK. This may be important information for us who participate in HPDEs, etc.
Considering how many T2 350Z cars there are, I haven't heard much on failures. If it is a brake failure, your probably a component that was either moved slightly (brake lines rubbing, ect), or such a rare instance that it hasn't been seen much if any at all before.
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GCR page 581 states what you can do with the 350Z and its 9" fronts and 10" rears. Under Notes they also list other things you can do that dont come with the car. The rules also limit the size of tire you can put on. We use the Kumho 710 285/30 x 18" on all 4 corners. Its a great tire.
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This Z is still at M-O, parked up near the tech shed and covered by a tarp. I had a chance to inspect the car and was amazed to see how well the front end absorbed the impact. Cage did it's job well and protected the driver compartment. Couldn't see into the wheel wells to determine the condition of any brake components. Reassuring to know how well designed these cars are!
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Originally Posted by betamotorsports
Here's a great post by the driver (from the Waterford Hills Racing forum):
Thank goodness he is ok, and kudos to him for preparing his car properly.
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Originally Posted by betamotorsports
Here's a great post by the driver (from the Waterford Hills Racing forum):
The corner worker's professionalism and skills were FAR superior to any other event i have attended. As for me I'll try to be back but I honestly don't know if i will be able to race again and stay married. One other thing I wanted to throw out there that most of you probably know but I never really though of as a rookie....one of the first things you should do when learning a new track is to evaluate every medium and high speed corner and study the terrain and features of the run off area and ask yourself...what should i do at this corner if i can't stop, either from complete brake failure or just coming in a bit to hot? I would think more times than not the answer would be to run off in a straight line. Maybe consciously studying these run off areas would counteract your instinct to try to make the turn. As for me, I vaguely knew that a sand trap called china beach was down there (run off area is down hill so hard to see much of it) but never payed attention to how massive it was or what layed beyond it (big tire wall). I think in the heat of the moment i was subconsciously thinking a concrete wall was lurking someone down there so my instinct told me to turn or die which initiated the infamous cartwheel effect.
This is one of the first things I learned, and it's one of the main things we teach students, right after "In a spin, both feet in." It's probably better to hit a wall head on than to try to steer at high speeds in the gravel. You're just asking to flip and roll.
I had a much less dramatic off right at that place back in 2006. I had been running for two days on Hoosier A03s, but had corded them, so I switched to my street tires for the third day. I knew I'd have to be slower and more careful on these tires, but in the first session I was driving with a student in the right seat, explaining the track to him, and after a warm up lap or two, the habits of the previous few days took over. I went into the turn too hot, braked too late, and ran right off into the kitty litter.
I probably wasn't going anywhere near as fast as the T2 car: my top speed on the back straight had been about 125 on the Hoosiers, and was 116 when I overran the RE040s. I only went about 40 feet off the track, hundreds of feet from the tire wall, but I knew not to try to steer once I was in the gravel. The tow truck pulled me straight out.
When I got back to the pit and removed the plastic undertray beneath the engine, there was about 30 pounds of gravel there and elsewhere under the body.
#58
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I was going to post this in the SpecZ thread after reading about 2 Z's with brake failure this weekend... but didn't want to derail the thread.
I'm not SpecZ, but I also experienced brake failure this weekend. Did some reading over the wekeend and seems like ABS Ice mode - or some hub issue causing a similar reaction. A guy named Ralph Provitz was on the T2 team with the Z that started this thread - his team determined a hub failure led to the brake failure in that case.
My brake pedal had pressure.. the car just didn't slow down. Thankfully I wasn't going as fast as some of my other laps due to a missed 3-4 shift at the beginning of the straight.
Stoptech ST-40/Hawk DTC-70 fronts, Brembo (OEM)/Performance Friction PFC01 rears.
Here's my video -
http://youtu.be/FWHnWVNDFsk
I'm not SpecZ, but I also experienced brake failure this weekend. Did some reading over the wekeend and seems like ABS Ice mode - or some hub issue causing a similar reaction. A guy named Ralph Provitz was on the T2 team with the Z that started this thread - his team determined a hub failure led to the brake failure in that case.
My brake pedal had pressure.. the car just didn't slow down. Thankfully I wasn't going as fast as some of my other laps due to a missed 3-4 shift at the beginning of the straight.
Stoptech ST-40/Hawk DTC-70 fronts, Brembo (OEM)/Performance Friction PFC01 rears.
Here's my video -
http://youtu.be/FWHnWVNDFsk
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thekinn: I was going to compliment you on keeping your wheels straight and not trying to turn in the gravel, then I saw that the post immediately before yours was by me, saying never to turn when you've gone off in the gravel!
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I'm hoping to help pinpoint the cause of this type of brake failure though. I did hear some kind of strange noises just prior to the incident (in the full video) - maybe that would help point to a hub or something else. Does hub failure/damage have a distinct sound?