bump steer... toe in or out

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Jun 19, 2006, 10:23 PM

mrfred

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bump steer... toe in or out

When the rear suspenion compresses, does it toe in or toe out? I'm also wondering how much bump steer the Whiteline bump steer correction kit removes.

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Jun 20, 2006, 04:08 AM

dr.mr

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Quote:

Originally Posted by mrfred

When the rear suspenion compresses, does it toe in or toe out? I'm also wondering how much bump steer the Whiteline bump steer correction kit removes.

Sounds like good questions for ROBI.

.

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Jun 20, 2006, 09:07 AM

mrfred

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Robert is the only person that knows?

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Jun 20, 2006, 09:52 AM

mayhem

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It toes in.

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Jun 20, 2006, 10:06 AM

GTWORX.com

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Quote:

Originally Posted by mayhem

It toes in.

Correct. Would be quite dangerous if it toed out.

- Andrew

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Jun 20, 2006, 12:03 PM

mrfred

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Quote:

Originally Posted by GTWORX.com

Correct. Would be quite dangerous if it toed out.

- Andrew

That's what I was thinking. Wanted to see someone say it though.

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Jun 21, 2006, 08:55 AM

Djazair

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has anyone verified this with measurement or calculation? is this for stock ride height and/or lowered?

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Jun 21, 2006, 08:57 AM

redvolution

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Yes - stock rear bumpsteer generates toe-in on compression and toe-out on extension. My favorite aspect of the bump-steer kit is the added stability in braking.

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Jun 21, 2006, 10:17 AM

mayhem

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Quote:

Originally Posted by Djazair

has anyone verified this with measurement or calculation? is this for stock ride height and/or lowered?

It's built in by the factory to promote some understeer. It's also a design characteristic of a double-arm rear suspension geometry. Toe-in on the outside and toe-out on the inside. I have no calculations to back that up, but I believe it.

My question is, do you get more neg camber under compression in the rear while achieving toe-in at the same time?

Last edited by mayhem; Jun 21, 2006 at 10:32 AM.

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Jun 21, 2006, 08:52 PM

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mrfred

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I sent an email to Whiteline and got this response:

"Standard rear suspension increases toe-in in compression. KCA388 [Whiteline rear bumpsteer kit] alters bump steer by approximately +/- 1.1mm/10mm travel. It can be installed to either increase or decrease bump steer."

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