My Avenger like to have quite a bit of bump steer, I don't like bump steer. My Avnger is my second car. I had a 1994 Eclipse before this car. My eclipse had NO bump steer. And had no speed sensitive power steering. My Avenger does. I at least want to try to get ride of the bump steer, I'll worry about the speed sensitive power steering later. Thanks
bump steer: When an uneven road surface causes a vehicle to steer or lose directional stability, this is called "bump steer." At the front, bump steer is associated with the tie-rod and linkage-arm relationship. It is caused by the method of locating the rear suspension, the type of rear suspension, and the geometry of the various linkages. In race cars, bump steer is designed out of the suspension so that the handling is as precise as possible. In most cars it is present to some degree. In fact, it can be useful to allow engineers to design a small amount of understeer or oversteer into the chassis.
Duh stupid I didn't know what it was either I had to look it up.
« Last Edit: March 22, 2006, 04:56:22 PM by Darktengu »
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titan-racing.com Medialocker.org
Mod List. Um WAY too many to fit on here. But the engine can handle about 800HP
Bump steer is usually defined as unwanted change in toe during suspension travel. In Other Words, as the wheel encounters a bump, the suspension reacts, moving the control arm up and compressing the spring. Bump steer implies that as the control arm travels up, the steering arm moves horizontally relative to the chassis, introducing some "steer" that the driver did not intend. Taken to the extreme, if one wheel hits a bump, the car veers over in one direction.
Our cars have quite a bit in my opinion, at least mine does compared with my 1st gen Eclipse.
Yea, I have stock excrement on my car. I haven't gotten that far. Lowering springs should get rid of the bump steer. KYBs? Now Im the dumb one, what are KYBs?
Yea, I have stock excrement on my car. I haven't gotten that far. Lowering springs should get rid of the bump steer. KYBs? Now Im the dumb one, what are KYBs?
Lowering springs will not get rid of bump steer! You alter the stock configuration. Check your alignment and suspension components.
What's wrong with speed assisted steering?
« Last Edit: April 02, 2006, 01:02:08 AM by silvercoupe97 »
Speed Senstive Sterring sucks big balls. You go out to an open parking lot, and have the RPMS at about 4000-4500 and try to make a clean, sharp right turn. and then try to couter-steer that turn, you'll know what I'm talking about. I had a 94 Eclipse before my Avenger, it didn't have the Speed Sensitive Sterring my Avenger has. I could go run Autocross all day lod without trying to hard to make the car turn. I can't hardly make my Avenger turn.
Yea, I have stock excrement on my car. I haven't gotten that far. Lowering springs should get rid of the bump steer. KYBs? Now Im the dumb one, what are KYBs?
Lowering springs will not get rid of bump steer! You alter the stock configuration. Check your alignment and suspension components.
right but lowering springs will reduce bump steer by the shear fact that you are reducing the amount of suspension travel. the less suspension travel the less the changes in toe is going to be.
Bump Steer is when your wheels steer themselves without input from the steering wheel. The undesirable steering is caused by bumps in the track interacting with improper length or angle of your suspension and steering linkages.
Most car builders design their cars so that the effects of bump steer are minimal. However, you must still take care to bolt on your suspension carefully so as not to create unwanted bump steer. Make sure that you are always using the correct components for a particular car. Bump steer must be designed into the car and cannot be adjusted out if improper parts are used or if pivot points are moved without considering bump steer design principles.
In order to accomplish zero bump the tie rod must fall between an imaginary line that runs from the upper ball joint through the lower ball joint and an imaginary line that runs through the upper a-arm pivot and the lower control arm pivot. In addition, the centerline of the tie rod must intersect with the instant center created by the upper a-arm and the lower control arm (See diagram below).
When you lower your car...everything goes out of whack. Your stock configuration is made for minimal bump steer, lowering only serve to misalign any of those stated lines unless you reconfigure your suspension...that means modify it. http://www.racerpartswholesale.com/longtech3.htm
i'm not going to argue with your theory, it is right. there is no one that i know of that has extended the tie rod or control arms. it's just not pratical and probably never will be. the only compromise we have to is limit the amount of suspension travel to negate the toe out that occurs during suspension compression. less suspension travel will lessen the effect of bump steer that is not built in to the geometry of the suspension. it's also going to make the car turn worse. toe out helps you turn. so unless you can fab up some custom control arms you're out of luck in theory. if you don't want lowering springs then get some coilovers and keep them at stock height or get some higher rate springs custom made. really there are enough suspension upgrades out there for us that can make these cars handle quite well minus the bump steer IMO. i never thought it was a big problem.
Hmm I guess I never noticed bump steer in my Avenger... course I did all I could to dodge the obstacles that our wonderful oregon roads threw at me. As far as the speed sensitive steering.
If you look at the very top of the page, under Latest FAQ's you will see the link to removing or adjusting your speed sens. steering. Good luck.
I've read that, but I don't feel comfptable doing that myself. Do auto shops to that kind of work? Will a Dodge Dealership remove that for me? Is there another Power Steering Pump that I could put on there to get rid of it? Or is it something in the ECU or something computer related?
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I didn't know what it was either I had to look it up.
