KC setup advice needed - carpet
 

I need some carpet setup advice, I started with the kit setup for carpet and made some minor tweaks (front and rear roll bars), lighter diff oil.

Thing is, it's traction rolling mid corner. If i go easy, it's fine, plenty of steering in the sharp corners at lower speed, but that's not fast lapping! I tried adjusting the roll centre to prevent chassis roll, still traction rolls. Maybe the car is too 'locked' in and i need the back end to be more loose?
I'll upload the setup sheet when i'm on a computer that'll allow it.

Chassis is carbon, position 3
Front - yellow springs, 45wt, no internal limiters. 1.2mm roll bar, short upper link with 1mm spacer
Rear - Green springs, 35wt, no internal limiters. 1.1mm roll bar, long upper link, 2mm spacer
Ride height 15mm
Camber -1 all round

Question is, should i just copy the Orlowski Trencin setup for carpet? It's not like he was driving a badly setup car is it?!

Thanks in advance.

Thanks to Aiden for hooking me up will Allan O'Brien and David Snee, who are helping unravel my setup!

I'd raised the roll centre (shorter top links and lowering the inner link ball position) hoping it would stop the chassis rolling, what it was doing though, was increasing the grip so much that it caused traction roll! So lengthening the upper links (and raising the inner ball link) has lowered the roll centre. yes, the back is a little looser, but it's not traction rolling half as much. I can chase the local track rats through the infield now :-)

I run a bit heavier oil. 50/40wt and 1.5mm droop limiters.
A can realy advise you to try position 2 on carpet.

I tried pos. 3 and found 2 way better with the same setup.

Can post my setup if you like.

My setup for EOS carpet.

Have to try some different springs, like blue front and rear.

No griproll on new tires. Think i can get some more cornerspeed out of it.

Oh cool, thank you. I've yet to try position 2! Think i'll have to try it soon. Appreciate the setup and oil weights.

Thanks!

if anyone could help i am having an issue with my kc on carpet.
i am using the carpet starting setup and it seems ok but the rear end rises considerably under power. it seems to rise considerably and makes the car unstable on the fast corners when pushed. i have played with the anti squat but it still seems to do it. i am wondering if the motor rotation is the reason. dress anybody know of a way i can try to reduce this. many thanks

When the car is sitting at its ride height, what angle are the driveshafts? Are they at an angle pointing downwards towards the diff?

I like running a rear swaybar. It adds stability on corners when pushed. Even a thin one helps.

the driveshafts are pointing down towards the diff. i wondered if raising the diff would help the issue.

That's what I was going to suggest. A guy who knows his stuff told me recently that the driveshaft will try and straighten themselves under power, so if they are pointing down they are trying to lift the back of the car. If you can raise the diff so the driveshafts are about level at ride height it may help.

Yesssss high diff will help. Didnt mention that as high diff is kit standard

This is more accurate with CVD driveshafts. With universal joints, they don't straighten so much under power and that's why they tend to ride bumpers better.