stephen_gusterson
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| posted on 10/9/03 at 11:51 PM |
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bump steer - how much do you have?
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
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Alan B
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| posted on 11/9/03 at 03:26 AM |
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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...
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Ian Pearson
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| posted on 11/9/03 at 07:31 AM |
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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. 
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kiwirex
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| posted on 11/9/03 at 08:42 AM |
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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
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| posted on 11/9/03 at 11:58 AM |
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quote:
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]
None taken.......
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Rorty
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| posted on 12/9/03 at 01:44 AM |
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Alan B:
quote:
mine measured about 0.020" (about 0.5 mm)....
Alan, at which point have you taken that measurement? Rim or tyre? 
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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Alan B
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| posted on 14/9/03 at 10:49 PM |
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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
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stephen_gusterson
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| posted on 15/9/03 at 08:58 AM |
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Alan
thats a whopping 0.0868 degrees.
for shame.
atb
steve
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