How to reach 1.0g on a skidpad

[cosmo]

If you haven't seen the new SCC, you should they show you how to reach 1.0g on a skidpad using these settings.

JIC FLT-A2 setting #2 (front and rear)Front spring-6kg/mm(335lb/in)Rear spring-5kg/mm(279lb/in)Anti-roll bar front-27mm Whiteline, full stiffRear-20 mm Whiteline, full softCamber Fr- -2.5 degreesCamber R- -1.5 degreesToe Fr- 0Toe R- 1/8 inch toe inTire-225/45ZR/17 Falken Azensis Sport all aroundTire pressure Fr-34 psiTire pressure R-37 psiQuaife helical LSDNismo hard rubber bushings JIC control arms

There you have it, true 2 way 1.0g settings for your S13

[SingleCamSam]

Anybody else think it can be done for less cash? SCC way over-spent on performance parts to get their Sr20 up to 280hp, so maybe they over-killed the suspension as well. Just a thought. Damn good info though.

[crzycav86]

I read that too and found it very enlightening.

I plan on using those spring specs now..

[C-Kwik]

R-compound tires will at least get you close. May even get you there.

[Ceptos]

i wouldnt think that you would need coilovers that expensive, other parts could be had for less by going with another company as well. better tires are a good idea, and maybe just replace the tension rod bushing instead of buying new ones.

would you really need the rear camber and toe adjustment?

the price of wheels should also be considered

[Nismo_Freak]

Rear alignment specs can make a large difference in how stable the car is in a corner.

[Q45tech]

Since by definition a skidpad test is static [you go around the circle faster and faster till the rear spins out], shocks don't make any difference............just the tire compounds and how rectangular the patch is ......camber/toe

[Ceptos]

can you take measurments of camber and toe from one car, and apply them directly to another with the same affect? for instance, would i be able to apply the settings listed for an s13 on an s14? do things like ride height and wheel base affect how camber and toe make the car react? just trying to get a basic idea of how they work from car to car.

[C-Kwik]

No. Different types of suspensions respond differently. For example, a double-wishbone/multilink set-up will increase negative camber during compression which will positively react to body roll and provide a flatter contact patch with little to no static camber. A strut set-up has very little camber change during suspension movements. This means while the car is leaning, the tire will actually start to lean out(positive camber) in relation to the road surface. To get a flatter contact patch, more static camber will need to be dialed in. At the same time, if you have stiffer roll resistance in a strut suspension, it will stay flatter overall. This is the better compromise for a track car since less static negative camber will keep a flatter contact patch during braking(front). High caster angles for front strut suspensions can help to offset some of the lack of negative camber as it will allow the front wheels to gain negative camber while the wheel is being turned(outside wheel).

All this being said, if different parts are on the two cars, it may not work as well with the same settings on both cars.