So this is what happens when you go hard into a corner, and people say "your tire was atleast 4 inches off the ground"

enjoy

sorry for size..

 

haha sweet pic

 

That's what happen when your front roll stiffness is less than the rear combined with the huge front inside to outside weight transfer. Most of the front wheel drive auto-X and road racers have this tendency.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Johnny Mac &raquo;</TD></TR><TR><TD CLASS="quote">That's what happen when your front roll stiffness is less than the rear combined with the huge front inside to outside weight transfer</TD></TR></TABLE>

Not really.

Just suspension droop.

 

A *verbatim* conversation I had this past weekend:

Paul: "You must get excellent tire wear on your car."
Me: "Why do you say that?"
Paul: "Only 3 of them are on the ground at any one time."

Big stiff rear barz own...

 

three wheeling is fun! its funny when you can hear the tire thats in the air touch down and spin a little.

How about two wheeling!!!???
John who autoxes in the SC Region 3 wheels his civic hatch with ease, but at one of the fairground events, he had both wheels on one side off the ground. Lots of people saw it! We were like HOLY SH*T!!! He said that was a little scary! His car weighs like 10 pounds though!

If I can locate the video, or get a still from the video, I will post!

 

Stiff rear end and loose front + diving into a corner + braking + turning will do it for a FWD car. For a RWD car it gets even better. Stiff front end, loose rear end + acceleration through a turn will get you front inside lift. I'd rather be in the RWD car where you lift because you're accelerating.

 

here is a pic of the sparco Evo, can you say 2 wheel motion

 

not a ton of droop there....now is there?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GokuSSJ4 &raquo;</TD></TR><TR><TD CLASS="quote">here is a pic of the sparco Evo, can you say 2 wheel motion </TD></TR></TABLE>

The difference is that is not cornering forces lifting it up - it is called "banging off the curbing".

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">

Not really.

Just suspension droop.</TD></TR></TABLE>

I had full suspension droop with OTS Yellows and I was still lifting inside tire. Rear sway bar and sticker tires..... having little to no rear droop is an even easier way tho

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emerika &raquo;</TD></TR><TR><TD CLASS="quote">I had full suspension droop....... Rear sway bar </TD></TR></TABLE>

If you had a bigger rear bar, you didnt have full stock suspension droop

 

not as far up as i was at the SEDIV event in a couple of spots.. but fun either way. At some point i am going to have to make a screen shot of my run at nationals in 2001 where i had the insides about 4 feet off the ground (like the saturn)

Jon K
http://www.seat-time.com

 

 

there is a guy popping out of that saturn

 

Here's the only one that I have of my car...I didn't walk the track, so I'm not quite sure what caused the front left to lift.

2001 itr
autopower 4-point
440lbs front/560lbs rear
RA-1's
3000lbs with passenger, driver, and a full tank
Turn 1, Beaver Run

 

There was a yellow CRX running in SM that was lifting at the corner where I was working, VW's tend to be fun to watch too...

 

people always seem to be happy when they do this like its some kind of accomplishment or somthing.


but i would think that this means you need some suspension work. because one tire off the ground means no grip on that tire, which isn't a good thing, now i know that there is not alot of grip on that inside rear tire, but still there should be some grip effect, if it was on the ground, i think.

i could be completly wrong here, but i don't think its a good thing, please tell me WHY it is a good thing if it is.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slammed_93_hatch &raquo;</TD></TR><TR><TD CLASS="quote">i could be completly wrong here</TD></TR></TABLE>

You are.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">

You are.</TD></TR></TABLE>

well instead of just informing me would you car to point me in the right direction to look for why its good? or why its not bad? or just going to spread ignorance instead of information

 

slammed_93_hatch, our cars are traction limited at the front. by unloading the inside rear completely we maximize grip at the front of the car. that is why it is good to have the inside rear unloaded.

is it good to have the inside rear 5" off the ground? i don't think so. my goal is to have the inside rear completely unloaded, but still "touching" the ground, or at least almost touching the ground. there are a lot of reasons i want my car setup like that. the main one though is that as the inside rear tire goes higher and higher, understeer increases dramatically.

nate

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slammed_93_hatch &raquo;</TD></TR><TR><TD CLASS="quote">or why its not bad? or just going to spread ignorance instead of information</TD></TR></TABLE>

Who's spreading ignorance?

That tire is completely unloaded under cornering, so whether it is touching the ground or not is really inconsequential, its not contributing anything.

As what nate said, it should not be a tuning goal, and having it 3' off the ground is probably bad as well. Its just a byproduct of unloading the inside rear, some cars/setups lift 'em, some dont.

 

so if i get what your saying you want it to be unloaded but still on the ground right?

thanks for the help post.


in an ideal setuation though don't you want little to no weight transfer? isn't that why we but high spring rates on are cars?


or again am i going in toatly the wrong direction?

im here to learn so don't take any of my question as saying that your wrong its just that i didn't understand it, and were all here to learn right?

RJ.- i was looking for an explanation obviously from my post you could tell i didn't understand it so a simple "no" wasn't any real help.


Modified by slammed_93_hatch at 8:24 PM 8/3/2004

 

I think that is an optical illusion of your front left lifting.. look at the road surface.. it does look like the left front is about half off.. but the curvature of the road makes it look like it is off the ground..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slammed_93_hatch &raquo;</TD></TR><TR><TD CLASS="quote">soin an ideal setuation though don't you want little to no weight transfer? isn't that why we but high spring rates on are cars?
</TD></TR></TABLE>

Weight transfer is a function of weight, cg, wheelbase/track width. Thats it. Cant get rid of it, newton ownz j00