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Throttle Lift Over Steer

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Old May 21, 2007 | 01:38 PM
  #1  
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Throttle Lift Over Steer

How do you guys combat this. I have my swaybar set on the stiffest setting and i know its the most probable cause. But im looking to get a little more balance off throttle and it seems that when i transition from on throttle to off throttle i over steer. Thoughts?
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Old May 21, 2007 | 02:09 PM
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Option #1: don't lift as much, loose is fast

#2, soften up the rear sway.
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Old May 21, 2007 | 02:21 PM
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drive slower....

I can even brake in the turn sometimes

(just kidding of course)
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Old May 21, 2007 | 02:23 PM
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Other options:

#3, decrease rear tire pressure

#4, decrease rear rebound

#5, decrease rear spring rate

Of course, you haven't mentioned whether it is in corner entry, mid corner, or exit.
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Old May 21, 2007 | 02:29 PM
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#6, adding a small degree of rear toe-in

#7, adding rear negative camber

Last edited by Barfly30; May 21, 2007 at 02:33 PM.
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Old May 22, 2007 | 01:04 AM
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Before changing the car, lets diagnose the driver.

As barfly mentioned, is this corner entry, mid or on exit?
Also was the corner proceeded by a braking zone? I.e. did you have to brake before entering the corner?
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Old May 22, 2007 | 05:45 AM
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Post up some video, should be easy to figure out.

-kyle
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Old May 22, 2007 | 07:47 AM
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I dont have a camera mount or video camera for that matter! Wow alot of responces. It is on turn in. On throttle it grips fairly well, though depending on the exit i can over steer a little, but that is controlable and not a problem as far as im concerned.
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Old May 22, 2007 | 08:00 AM
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Also on partial throttle mid corner if i lift the tail comes arround. I have heard about using some toe in and i think im gona give it a try. Though it will increase tire wear correct. I dont have camber plates in the rear so i cant dial in all that much camber.
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Old May 22, 2007 | 09:49 AM
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Originally Posted by spdracerut
Option #1: don't lift as much, loose is fast

#2, soften up the rear sway.
+1 ...
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Old May 22, 2007 | 10:36 AM
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no dont toe the car in... we all have the same car.... "loose" corner in or out is strange.

do you have coilovers? maybe you never got corner weighted?

check your bushings and did you do any chassis braces on a sloped driveway?

please list mods

-Kyle
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Old May 22, 2007 | 11:20 AM
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You may just need to change the timing of your throttle lift. You typically don't want to invoke weight transfer while turning.

Someone once summed it up quite well when they said: slow in, fast out. It seems to be the quickest way around.

I would recommend letting off a bit earlier and touching the brakes just a bit to settle the car and bring it to a speed (before turning) where you can apex the turn tightly and accelerate through exit.
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Old May 22, 2007 | 11:40 AM
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If it's driving related I would suggest lifting more gradually as opposed to just snapping your foot off the pedal because if that's the case it'll cause your oversteer especially when the rear is unloaded. Now if it's suspension related, you most likely have too much rear toe-out for the amount of rear bar you're running. The rear bar that kept my inside rear tire on the ground liked much less toe out than the stockers.
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Old May 22, 2007 | 12:39 PM
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I would check your rear tires pressures and your alignment. You shouldn't be getting oversteer throughout the corner on throttle lift alone, unless your car is setup for it. I also run full sitff on the rear sway, 25mm, and don't experience much throttle lift oversteer unless I purposefully make a few changes to bring it out for help with rotation.

Also, make sure you are smooth. The Evo is pretty forgiving, but if you are lifting too abruptly through a corner, especially at the limit, you can unsettle nearly any setup.
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Old May 22, 2007 | 12:49 PM
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I have to say it sounds more like driver than anything.

Throttle down in corner = understeer
Throttle lift in corner = "oversteer"

Its simple physics, if you lift while turning your rear will want to rotate more heavily. Use it to your advantage.

Having said that, it could still be your suspension. I'm not here to flame you

So, if you are lifting throttle in the turn, that implies that you were on throttle in the turn before that. What is the scenario? Decreasing radius corner? Dual apex? More info pls!
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