Quote:
Originally Posted by Gnarly Old Dog
Bump Steer will also be affected by what kick-angle you are running.
I run 25 deg Kick with 5 deg blocks and no washers on the steering arm and have pretty much zero bump steer.
But if I use the taper 20 deg kick wedge, then I can get massive bump steer.
The other thing that can affect it is the axle height - i.e. what shims you run above and below the c-hub.
Try to visualise what is happening to the height of the outer steering ball joint when you either change the caster angle, kick angle or axle height. It is this height change that is causing the bump steer.
Once you visualise it, it is easier to figure out what needs to change in order to reduce / remove the bump steer.
HTH
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I haven't really gotten to grips with this yet:-P
I've read a lot about people asking how to get less bumpsteer, but none with a good reason to why they want less. In theory more bumpsteer will give me less steering midcorner when the car rolls, right? In my head that means I can have an aggressive setup with a lot of reaction, but it will calm down and stabilize mid-corner. Or am I far off :-P ?
I've run 2mm shims as per manual all year with 25/5, this gives me quite a significant amount of bumpsteer, doesn't it? *Don't have the car with me to check... :P* I guess the affects of adding and removing shims will be the next on my list to figure out...
Just got a new indoor track, 150 tons of clay laid down in a warm, big building. Yay!!