After Market Sway Bars?

[Beer Baron]

Think about it in a transient rather than steady state mode.

Then factor in your high speed damping effects.

...and don't forget to carry the 1.

[djr81]

The point I was trying to make (With or without the one being carried) is that belting a kerb to a degree is analagous to the random brick on the road the solution to which is the pretty much the holy grail of active suspension. You want compliance at that point.

[shnaped_second]

Thanks guys, lots of useful info

Cheers

Brad

[scathing]

Are your spring rates and bar rates higher?

They both are.

My OEM spring rates are 5.9kg / 6.5kg F/R. The Flex run 12kg F/R.

Not sure how thick my new swaybars are, but they're definitely thicker (about as thick as you can get, apparently) and solid instead of hollow.

Given how skittish the car is with 12kg springs on the street, if I don't find the car easy to drive on the track I'll drop down to a 10kg spring. Should that still not give me the powerdown I want, I'll put my OEM rear swaybar back on.

[nuffsaid]

Wow geez 12kg, that is phenomenal for the road, that probably explains why it is so skittish, especially with the thickest bars.

[Roy]

What car is it to have higher spring rates in the rear? The big cast iron engine is up front so woudl expect the higher spring rate to be at that end.

[djr81]

Stock GT-R's have higher spring rates at the rear than at the front. Lessens the understeer.

[nuffsaid]

What is the stock spring rate for a R34 GTT then?

I thought they were like 2.5k, didnt expect GTRs to be twice as high though

[nuffsaid]

Just found out

R34 GTT: front is 2.7 rear is 2.8

[Sydneykid]

Stock GT-R's have higher spring rates at the rear than at the front. Lessens the understeer.

Because the standard rear bar is drastically too small.

cheers

[Roy]

Whereby proving...GTRs are backwards.

[scathing]

What car is it to have higher spring rates in the rear? The big cast iron engine is up front so woudl expect the higher spring rate to be at that end.

My engine is alloy. Its a 350Z.

Considering my car's weight bias is to the front, and my spring rate bias is to the rear, I just cannot for the life of me explain why the damned thing understeers so much in stock setup.

[Sydneykid]

My engine is alloy. Its a 350Z.

Considering my car's weight bias is to the front, and my spring rate bias is to the rear, I just cannot for the life of me explain why the damned thing understeers so much in stock setup.

Caster and camber, the way Nissan designed it

Understeer is good for the Wallies

When they rush up to a corner too fast, so understeer is better as it scrubs off speed

Oversteer and Wallies don't mix, flying off backwards at undeminished speed is not good

cheers

[scathing]

There's no doubt that most of the understeer is engineered in. Getting rid of the staggered tyre sizes, and different swaybars, cured most of the understeer.

Probably the best "bang for buck" handling mod I did to the car.