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Track Constant Meaning: Explained & Defined

 
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christians
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Post26-03-2006, 20:58    Subject: Track Constant Meaning: Explained & Defined Quote

I also replaced the tie rod ends while replacing the control arms on my A6, as part of the mandatory maintenance.
While I've managed to get the camber and toe relatively close to the original values, camber being somewhat limited in its adjustability, I have no way to verify the toe constant using my own methods.
"How important is this value really, and how would one notice if it was set incorrectly?"
Gruß Christian
A6 BPP, Ex-A6 AKN (Gurke), Ex-Audi100 92 AAT (5Zyl.)


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Steffarn
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2003 Audi A4 Avant
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Post27-03-2006, 8:01    Subject: Track Constant Meaning: Explained & Defined Quote

Okay, I only adjust the tracking stability when the car pulls to the left or right when driving over bumps. This is especially useful when the car is bouncing or compressing.
The track changes more on one side than on the other.

wenn der Spurstangen kopf jetzt mal raus muss.(Oder erneuert werden) einfach wieder auf alten abdruck hinnstellen und gut is.[Nicht einfach nur bis zum anschlag hochdrücken.]
An average driver probably wouldn't notice if something isn't quite perfect.
B.Eng (FH) u. KFZ Meister
Seit 06/10: Audi A4 1,9 TDI Avant Quattro mit AVF.
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christians
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Post27-03-2006, 12:42    Subject: Track Constant Meaning: Explained & Defined Quote

Steffarn wrote:

wenn der Spurstangen kopf jetzt mal raus muss.(Oder erneuert werden) einfach wieder auf alten abdruck hinnstellen und gut is.[Nicht einfach nur bis zum anschlag hochdrücken.]

That's roughly what I did as well. However, the Meyle parts aren't exactly the same size as the original parts, which I noticed when adjusting the toe angle; I had to make further adjustments.
I'm now looking for a suitable test track.
Gruß Christian
A6 BPP, Ex-A6 AKN (Gurke), Ex-Audi100 92 AAT (5Zyl.)


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Steffarn
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Post28-03-2006, 23:10    Subject: Track Constant Meaning: Explained & Defined Quote

christians wrote:
Steffarn wrote:

wenn der Spurstangen kopf jetzt mal raus muss.(Oder erneuert werden) einfach wieder auf alten abdruck hinnstellen und gut is.[Nicht einfach nur bis zum anschlag hochdrücken.]

That's roughly what I did as well. However, the Meyle parts aren't exactly the same size as the original parts, which I noticed when adjusting the toe angle. I had to make further adjustments in that area.
Right now, I'm looking for a suitable test track.


Yes, if you use the original track rod ends, it makes things a little easier.
However, they cost more than double.
Not to mention the control arms; those cost a fortune.
A used icon_eek.gif eight-pin connector, originally costing around €150, and accessories costing about €30. }
B.Eng (FH) u. KFZ Meister
Seit 06/10: Audi A4 1,9 TDI Avant Quattro mit AVF.
//images.spritmonitor.de/402493.png


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Herr Antje
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Post29-03-2006, 9:07    Subject: Track Constant Meaning: Explained & Defined Quote

Steffarn wrote:
So, I only adjust the tracking constant when the car pulls to the left or right when driving over bumps. This is useful when the car is either compressing or rebounding.
The track changes more on one side than on the other.


"Or when braking hard, and even if it's not related to the brakes. When driving over bumps, the vehicle can also pull to one side even if the tracking is correct. However, if it consistently pulls in the same direction, this method is quite reliable."

I thought that a "normal" measurement with a specific setting would also change the track constant, but it shouldn't actually do that... (?)

I had my car aligned recently because I bought new tires and wanted to be on the safe side (it sometimes pulled to one side when braking). The alignment was slightly off, even though nothing had been changed on the suspension.

I also had the safety features adjusted, including the track constant, but I'm also a hypochondriac icon_smile.gif.
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