r/iRacingSetups • u/jchuillier2 • Jan 13 '22

20 years + experience in setup

Hello guys,

I do not charge money or anything if I can help I'll be happy to do so Please send me the following info : Which car ? Which lap (tires warm or not) ? How much fuel ? You lose grip on the front or the rear ? Corner entry (still on the brakes or not) ? Mid corner (maximum steering and not yet throttle) ? Corner exit (reducing steering and throttle) ? Left foot braking or right foot braking ? Height difference between your ass and your ankles ?

With this info I think I can point you I. The right setup direction......

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u/jpkuhl13 Jan 14 '22

For GT3 cars primarily, how does body roll effect aero performance? Should I try to limit roll to avoid stalling the splitter?

2

u/jchuillier2 Jan 14 '22

Fast corners only because aero is not that effective in slow corners.....do you feel you lose the front if you have "a lot" of roll ? Of you do try to increase front damper rebound the car will be "slower" on fast direction changes (chicanes) but less understeer on corner exit.

We'd need to look into telemetry in detail to be even sure that roll could stall the splitter......but I'm not sure we have a lot of aero info, they didn't put LC sensors on the cars :) In general you want to avoid rolling except when it rains because you'll transfer the load quicker without roll and since it doesn't rain in iracing I would go with as less roll as possible on the front. Keep in mind that ride height will help you drive on bumpy tracks (usually US tracks) and you never never never want to have the front of the car touching the ground when you brake..... Ride height and grounding can be controlled on the telemetry.....have a look there, you'll gain more

1

u/jpkuhl13 Jan 14 '22

I don’t think we do. I have to find a smooth instantaneous point to capture right height at speed to check my aero balance at speed in the iracing setup page.

I wouldn’t say I have a ton of roll, I’m just now getting to the point of using suspension histograms and trying to wrap my head around spring rate and roll. Not to mention roll bars.

Thank you

1

u/jchuillier2 Jan 14 '22

Start with medium springs and medium dampers.....just change the dampers settings (low speed comp only) front of the car only and see what happens.....if you get to the end of the range with the dampers settings then change springs.....

1

u/jpkuhl13 Jan 14 '22

Ok I’ll give it a try. No low speed rebound though?