Quote Originally Posted by tinkerbell
your opinion that 'it is very clear which is better' is the issue.

ie it is NOT very clear WHY it is better.

why is sway bar roll control better than spring roll control?????

why is it 'clearly better'????
...
Hi Everyone,

tinkerbell,
It seems that you are seeing this as black and white, i.e.; extremely high spring rates with standard sway bars, or zero spring rates with massive sway bars.

Some of our (WL) explanations were put forward to illustrate a point, that we choose to use springs only as stiff as they need to be, no more. That is not to say that we do not believe in stiffer spring rate, as that is not true. I think you will see that in case#2.

It is all a case of balance, balanced interplay of all suspension components, rather then grabbing for for biggest hammer (spring) that one can.

My previous reply #117 in this thread....
"Yes, correect. That is why we choose the softest spring rates with big sway bars.
Result = more compliance (increased grip) + adequate roll control + reduced chassis and component stress + improved tyre wear + easier to drive (less fatigue on driver) + etc"


A good case in point as to why excessive high springs rates with standars sway bars are not an ideal solution was shown on GTP cars recently (if that is what they are still known as...). I am not sure if anyone has seen this, but their last round at Eastern Creek, turn 1 (~200km/h), one of the cars, I think it was an EVO, started to repeatedly pitch uncontrollably in the rear, and subsequently lost control and spun out. I don't know the exact reason for this, but I am sure that had it been softer sprung with bigger sway bars, this would have been less likely to occur. BTW, GTP cars are free with shocks and springs, roll bars cannot be changed = compromise.

euGeR,
Understand about the difficulties with getting the extra data.
Do something for yourself, and consider getting a tyre pyrometer. It will give you invaluable information about your car. It's a must for suspension tunning.

The two cases were based on rates only.

Regards,
Wojtek
Whiteline Automotive.