Lenman73

iTrader: (4)

Actually thats about the opposite of what I did considering I did have the sway bays are when I did have the TR problems. Look at it like this, when cornering the car wants to roll . Using a setup where the chassis can roll but keep the tires on the ground is achieved by softening. Sway bars are going to limit the chassis ability to roll and that energy is going to want to go somewhere, so up and over it goes. When I took them off, no more TR.

Timbulb

iTrader: (2)

I disagree.

I agree.

Spdjunky

iTrader: (16)

Sounds like your on the right track with what is being said. You might also look into a little more caster possibly. Caster is funny, too little will cause it and too much can contribute also.

Definitely letting the chassis move a little more helps. In my opinion, I like to run a bit softer setup, and then run sway bars to help square it up faster in & out of a turn.

vitomon

so far from what i understand you guys recommend the following meassures against traction roll (no particular order):

-glue the sidewall of tyres
-softer springs overall (i would add no progressive springs)
-front anti dive
-less camber in front (back?)
-softer swaybars or non at all
-softer oil (eg 450 MuchMore)

what i dont get is the droop setting. would you guys recommend that the suspension arms angle more upward (more preload on damper) or that the arms are angled more downward ??

have i missed anything in the list above??

sosidge

Sometimes you need to go stiffer to stop traction roll, sometimes you need to go softer. It's frustrating to judge which is the right choice.

If I have any observations, it is that if the car "snaps" into a roll, the car is probably too stiff. If it is "lazy" into a roll, the car is probably too soft.

Cain

iTrader: (294)

on average how much camber have you guys taken away? (so say ran zero camber, then went to -2 camber, etc)

Spdjunky

iTrader: (16)

Well put!!

+1

UltegraSTI

iTrader: (20)

Spdjunky

iTrader: (16)

Droop is relative to your ride height and traction. I would run at least 2mm droop. The lowest ride height for most classes is I think 4mm. TC I think is 5mm at most clubs.

I kind of like progressive springs, yet I have never used them when traction rolls were an issue.

Softer oils +
Glue the sidewalls - Last ditch choice!! -

tom_chang79

iTrader: (13)

Can't you also take away the droop a bit to lessen traction rolling?

Spdjunky

iTrader: (16)

Tom, there is a fine line here also. Take a look what Sosidge wrote.

Most of my experience has been that droop needs to be added though.

vitomon

so by "more droop" you actually mean the arms will be more flat/or angled downward??

Spdjunky

iTrader: (16)

Droop is how much the car will raise up in the front or back, from its current ride height with the tires still touching the surface. Too many other variables affect arm positions, so that is irrelavent.

niznai

No. The arms will droop more before lifting off the track.

Less droop is not at all what you want. You want more droop as suggested above.

captain stacker

iTrader: (10)

more droop, so say from 2mm to 3mm for example?

most setups call for internal limiters to reduce droop, which helps reduce traction roll.

this is a paragraph of the setup tips I look at times when im confused:
Adding more internal travel limiters is a very effective way of reducing traction rolls, if not the most effective way.