Lower preload, increase coast?
Preload 3, coast 60%; don't think this is the reason, works ok elsewhere.
If still not working either try decrease front toe-in (towards positive) and/or increase rear toe-in (towards negative).
It'll increase straight line stability though ruin your turn in possibility if overdone...
From
http://www.ozebiz.com.au/racetech/theory/align.html"When the wheel on one side of the car encounters a disturbance, that wheel is pulled rearward about its steering axis. This action also pulls the other wheel in the same steering direction. If it's a minor disturbance, the disturbed wheel will steer only a small amount, perhaps so that it's rolling straight ahead instead of toed-in slightly. But note that with this slight steering input, the rolling paths of the wheels still don't describe a turn. The wheels have absorbed the irregularity without significantly changing the direction of the vehicle. In this way, toe-in enhances straight-line stability.
If the car is set up with toe-out, however, the front wheels are aligned so that slight disturbances cause the wheel pair to assume rolling directions that do describe a turn. Any minute steering angle beyond the perfectly centered position will cause the inner wheel to steer in a tighter turn radius than the outer wheel. Thus, the car will always be trying to enter a turn, rather than maintaining a straight line of travel. So it's clear that toe-out encourages the initiation of a turn, while toe-in discourages it."I use on most cars and tracks front toe -0,30 and rear +0,30. This wandering occures on 997 only.
Ok, will try that as well.
...and if the car is still bad after this I guess something is wrong in the physics file (there's already something definitely wrong cause it cooks NGT tyres
and therefore has GT tyres).
Well, I don't know about that. The car feels ok otherwise, it's just this wandering that's driving me nuts.
Thought it was only noticeable in the wet
never seen it anywhere else.
Well, this was dry. In wet it must be even worse.
i fixed the wandering ages ago in the porker. Did give tt my setups so not sure why he is still struggling with it !
I remember you and JPS talk about it on the forum, was reading it but I can't discern which of your setups actually worked this thing out. I was preocupied with the beautiful-no flaws-F430.
Besides, I'd like to know what it is, so I can take it into consideration for future problems on other cars.
Perhaps your ffb is ramped up too high so exasperating the problem ?
I have it on 50%, so I don't think so.
reducing front caster helped a lot.
Again, from
http://www.ozebiz.com.au/racetech/theory/align.html"Positive caster tends to straighten the wheel when the vehicle is traveling forward, and thus is used to enhance straight-line stability."I usually drive with high-ish caster (above 4) and it works well elsewhere. It might be a thing to try, though the theory states differently.
Been a while so cannot remember what else i tweaked but was a few things. Then won at Spa
Congrats again, MJ.
I remember that and also that you fixed the wandering which made me feel ok as I was confident you can help me with it if I have the same problem. Then you forgot.
Anyways, I have to make some more laps to try new ideas from here.
