Spring rates and there effect

[Alonso]

Hey guys just a question about the formula vw i run? We have to run the same spring rates but we can interchange front to rear. The front shocks are stiffer than the rear and i was thinking the following. At the moment the rear springs are very soft andf the front springs are hard. I know that on all the formula ford zetec's i have run and been very succeful with the front springs are always softer than the rear. If you take my car the fronts are 450 to 500 and the rear from 700 to 800. Then you can dial in the pre load needed to make sure that you have zero droop and the car is not to responsive turn in. Know as i have posted before about the snap oversteer i am getting is it possible that the rear springs are to soft and the car is rolling to much causing the snap? As well as the rear tyres working to hard because of the roll then the shock is bottoming and the tyre is rolling to much causing the snap. This is happening when power on is applied and threw fast sweeping corners. Plus these cars are aero cars so the effect will be even worse on the rear.So what i am thinking is to swop the front and rear wich will stiffen the rear and soften the front. The springs are all the same lenght front to rear. Does this make any sense to anybody.
Thanks for your time.
Alonso (these are single sear cars)

[Belatti]

Now that you specify better in what situation the snap oversteer problem occurs I can tell you have a soft rear or a hard front. However, interchanging both sounds a bit extreme. I dont know what torsion bar values you are using but have them in mind when changing so much the spring rates. Weight will be transferred more to the front with the thing you are planning to do.

I think F1 cars use softer rear springs to improve traction, but not soft enough to bottom the shocks.

[Alonso]

Thank you very much for your input. The anti roll bars are all one fixed size so changing that is a problem but there are a few diffrent spots you can put them into depending on the stiffness or softnes you want. I know that they are very soft on the rear and the harder you drive the cars the more the snap gets worse. We also not getting full use of new tyres because the working so hard in the rear that buy the second and even worse the third heat cycle they are pretty far off.

[Shaddock]

Are you running out of suspension travel at the rear causing the oversteer? This usually happens in the fast corners. Try stiffening the rear and see what happens.

[Alonso]

Yes i am going to put stiffer rear springs in and put the softer springs in front. The car comes with soft rear and stiff front. will that make the car better by putting stiff rear and soft front? All i will do then is just get zero droop infront and put on the preload if the front end is to good at turn in?
Thanks Alonso

[Jersey Tom]

If you swap the springs and don't change the TOTAL stiffness, the car will roll just as much after as before. Then again I don't know anything about the installation ratios.

I'd bet the car will drive like crap. But you can play around with it.

I still think your snap oversteer is from the dampers bottoming in the rear. Must be a way of solving that.