5 replies to this topic

[boblhslr]

Hi
This might be a silly question, but what is bump steer.
I have just brought an lh slr. I have converted the front stubs to hq and am running the lh steering arm. I am also useing pbr alloy calipers. I haven't driven the car yet as it is not registed. I am going to use the car on the street, tarmac rallies and sprint sessions on track days. I hopeing to fix any geometry problems before i register it. Any help would be much appreciated.
Thanks

[rodomo]

It is to do with when you hit bumps the car steers in the direction of the bump. Usually caused by incorrect toe-in in my experience.
Have a look here:
http://www.bakerprec.../longacr17a.htm

[Litre8]

Can also be caused by dubious front end conversions where the the tie rod arms are not parallel to the ground. When a front wheel hits a bump the arc travelled by the tie rod arm causes the wheel to 'self' steer.

[boblhslr]

Thanks Rodomo. That certainly answered my question

What is the easiest way to fix the problem. Would it be better if i was useing a UC steering arm.

[Litre8]

Ideally A9X or L34 steering arms, not sure on the UC ones. I think Harrop make a A9x repro steering arm.

[Toranamat69]

The Harrop A9X repro arms are your friends if you have HQ stubs.

UC ones are better than LX but not as good as the A9X ones.

M@