Having just remodelled and greatly improved the geometry of my front suspension, I seem to have a bit more bump steer than I expected.

I havnt measured it yet, but im wondering how much is normally acheived on the 'average' builder's car?

I have tried to get away with a standard rack - I guess im gonna have to get it modded ....


atb

steve

Steve, mine measured about 0.020" (about 0.5 mm)....don't know if that's good, bad, average or what...but it will do me for now...

I've no accurate measurement, but since getting the rack modified, there is no visible bump steer. I'm sure there must be some as I positioned the steering rack and judged the amount the rack needed shortening with a steel ruler and a Mark 1 Eyeball! I think I'd be more than pleased if I'd managed Alans 0.5mm though.

Alan B:
> Steve, mine measured about 0.020" (about 0.5 mm)....
>don't know if that's good, bad, average or what...but it will do me for now...

I think that falls in the category known as "smug git"
I'd say that's better than most road cars.
Well done!

- Greg H
(no offense)

[Edited on 11/9/2003 by kiwirex]

quote:

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Originally posted by kiwirex
Alan B:
> Steve, mine measured about 0.020" (about 0.5 mm)....
>don't know if that's good, bad, average or what...but it will do me for now...

I think that falls in the category known as "smug git"
I'd say that's better than most road cars.
Well done!

- Greg H
(no offense)

[Edited on 11/9/2003 by kiwirex]

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Alan B:

quote:

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mine measured about 0.020" (about 0.5 mm)....

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Rorty, the figure is interpolated to represent the amout at the tyre (22" diameter, 11" radius))

I did it with a laser shining it's beam 10 feet away, and worked the figure back to get the 0.020"

The actual figure over 10 feet was about 0.218".....equivalent to about 0.020" at 11" radius

Alan

thats a whopping 0.0868 degrees.

for shame.

atb

steve