Set up tips for rumble strips

[Mincepie10]

It's a common subject, but does anyone have any set up tips for reducing the impact of rumble strips? It's not all the rumble strips, but some just seem to suck one side of the car off the track. Can you reduce the impact? Lower the traction control? Something with the rebound settings? Tips gratefully received.

[Zaskarspants]

Lift off the throttle. If the inside wheel has reduced traction and there is forward torque the outside wheel with the higher traction will tend to rotate the car towards the rumble strip or kerb or wet patch or puddle, whatever is reducing the traction.

I guess different diff settings will change the magnitude of the effect but I never touch diff settings so I wouldn't know for sure.

[hkraft300]

Softer springs (and softer fast bump settings) help.
More open diff (less preload, more accel ramp) helps.
But it won't eliminate the problem. Some kerbs are murderous.
When I nip a kerb in my car (has diff, low power) at full throttle at 30-60kmh it really kicks the car sideways.
It's not only that the car is unbalanced, but it's also a sideways push on the axle from a steep kerb. Depending on your steering angle and the radius of the turn (and the shape of the kerb and your trajectory...) it can suck the car in towards the inside or spit you towards the outside sideways.
Either way, your physical g senses are missing (because you're sitting still) so it's harder to gauge and react.

[Mincepie10]

Thanks. It's interesting, though. When I look at set ups and record laps, the really fast drivers seem to have no problems taking a bit of curb/rumble strip, sometimes even going right through the corners without really seeming to bother about the rumble strips. If I try the same trick, I'm toast.

[hkraft300]

It's not impossible, and I think the secret is in minimal steering angle as you attack the kerbs, and anticipate the rotation induced by the kerb.