Thats what i was thinking

 

That is true, I have done many track days in my evo and no mater WHAT I did under 70 the car will NOT go out of control unless I made it do it. If it spun out at 40 something is wrong with the way that car is setup.

 

hey 2fast, nice meeting ya yersterday. I'll see you next saturday.

 

No, lower tire pressure would have most likely given him more grip, and wouldn't have snapped like it did. Higher tire pressures in the back would definitely have made him understeer. Less traction in the back (less tire contact on the ground) = more tires spinning in the back when traction is lost, while the fronts have grip. I've noticed at autox. I've also spun out at autox in a similar fashion he did, but I didn't let go of the gas til I was facing the other direction.

 

Low air pressure gives you better grip in a strait line.... not better grip in a curve. Tire sidewall rollover gives wierd handling results. Also, overly high tire pressure in the rear would reduce rear grip resulting in oversteer not understeer.

One thing no one has asked or considered including myself.... Is it possible you were under heavy boost and hit fuel cut? Hitting fuel cut when at the limits of addhesion would surely result in a spin like you described.

Keith

 

Yea, but this is what I've noticed from personal autocrossing experience. I shoulda clarified that when I say lower tire pressures, I meant 35-37psi, hehe, vs 40ish for the fronts (or in comparison to the fronts). Yes, lowered tire pressures on the rears do toss the rear end out more.

 

My car drifts like a champ, I purposely take turns to fast to get it to slide,and it does, but the rear comes arond just fine, I think you hit something, these Evos handle great, and when teh lose traction and drift, they handle better.

 

Maybe black ice? Dirt on the road?

 

you had to have slid is something or gradually moved up on the curb (while taking the turn) , im going with slid in dirt or ice or oil or something like that... either way that really sucks, good luck with the repairs

 

That's true, cuz sliding the evo make the tires roar like *****. If you didn't hear your tires roaring, you probably armor-all'd your tires or something.

 

IIt seems to me you counter steered to much to fast. did you turn in the corner to late?

thank God you didn't roll it over when it hit the curb.

 

I've had some experience trying to fix messed up frames on unitbody cars. That kind of hit certainly could have caused some damage. Here is what you have to do.

-Fix the obviously bent parts and if the car aligns in spec at least you can drive it around.
- Find a really good shop that specializes in frame damage. Ask around. Dealership body shops are kind of hit or miss on the quality of their work. It takes a lot fo $$ to set up a decent shop and some dealers dont want to make the effort.
- Tell them what happened and show them the picture. Tell them that it is very important to you that everything is exactly straight. Get their price to measure/check the suspension pick up points. You should expect to pay at least $200 for this. There is a good bit of work involved in doing it correctly.
-If somthing is out of whack they sould be able to fix it while they have it apart. Expect a $500 and up bill for this, unless it is somthing really minor.

Another problem I've had is slightly out of spec suspension arms. I have not had much sucess detecting/measuing or even finding specs for these items. Lucky for me the only cars I've had to deal with this on had cheap parts, and just changing out eveything fixed the problem.

For you engineers or machine shop people; would anyone be intrested in making a set of precision go/no go gigs for the really expensive looking cast bits on this car. I know i will eventually need to check for bent stuff on my car.

OR

do it yourself get "How to make your car handle" by Fred (I'm not sure of the spelling of his last name. I think its Pulm or Plum) They just came out with a new edition. easy to find. Explains all about how to measure the car. Doesnt take much equipment, but a lot of time and very carefull measuring.

 

That's what I thought too.

 

you might have a defected evo. the evo should've handled that turn. weird.

 

On any given sunday anything can happen. 99% of the time it's the driver. plain and simple. the other very rare mechanical related cuases are usually very obvious. locked up diffs, locked up motors, etc.

I'd highly recommend anyone unfamiliar with how to handle and keep your car within safe tolerances on public roads, get to a high performance driving school quickly and try to keep up with a few slocuses..

Geez. defects.. get real. I can loop an Evo at 30 mph easily even on full race slicks with much more grip than stock tires. And on a carefully manicured track free of any fluids. Thousands of times more predictable and grippy than driving on stock advans on public roads. I think I have a nice 540' at the track from last weekend on tape. Goofin around and showboating and it's quite easy to do and easy to get away from ya. So ya do it where you know there is plenty of run off.