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Kinematic Toe function question

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Old Sep 18, 2011 | 11:24 AM
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Question Kinematic Toe function question

When searching Kinematic Toe, I find lots of posts about it but no explanation how it actually works while driving.

Provided alignment is correct, what happens when making a tight turn?

Let's say the rear toe is 0 on the straight.
During a tight LEFT turn, what happens to the rear toe?
Does it change to positive or negative?
On both wheels equally?
Or more on the inside wheel vs. the outside wheel?

Thanks.
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Old Sep 18, 2011 | 11:51 AM
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964 version


993 version
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Old Sep 18, 2011 | 12:59 PM
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Bill,

Do you have a more detailed graphic of the kinematic design? Does it really work?

The Weissach (964) design is sistematically deleted on racing cars because it produces self-changing-line rear... A BAD feeling!

Tks
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Old Sep 18, 2011 | 01:15 PM
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Thanks, Bill, outstanding.

It makes sense to have the rear wheels to go in the same direction as the front wheels JUST A TINY BIT in a turn. Amount depending on how tight the turn is.

I'm sure Porsche Techs gave it a lot of thought and tests to make it work with an emphasis on safety.
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Old Sep 18, 2011 | 04:09 PM
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Originally Posted by anto1150
Bill,

Do you have a more detailed graphic of the kinematic design? Does it really work?

The Weissach (964) design is sistematically deleted on racing cars because it produces self-changing-line rear... A BAD feeling!

Tks
As it is on 993 race cars. Like RSR and GT2 Evo

The RS and Cup both used the same harder rubber bushes on arm 5, that is what I use on my car too. KT is greatly reduced by this stiffer bush and is not an issue at all w/ this setup. When I first tracked my 993 w/ stock #5 bushes it was downright scary in certain situations. W/ the RS parts not at all so.
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