I had my second race on Sunday with the xb8tq. I managed to position first in the B Main. I am quite happy with the result considering I am a newbie and I still had major problem with oversteering and nervous rear end.
In the qualifying I used 353 diff oils with the 38T overdrive.
This is the setups I used.
xform/index.php?act=view&ID=608&setup=xb8tq
xform/index.php?act=view&ID=607&setup=xb8tq
In the B Main I change the diff oils to 333.
The car handled the jumps great but at half of the track, where there was more loose dirt, the car was coming around when I accelerated from middle to out of the corners. The rear was also agressive, twitchy.
I tried different things, shorter rear camber link, 2 and 4 degrees antisquat, higher and lower rear roll center, softer rear shock springs.
I noticed that when I switched from 353 to 333 the car drove very well without and oversteering for 5-6 laps, but after that it was loose. It feld like something changed on the car.
The air temp was 42 degrees. We got fried under the sun!!
Other diff oil combinations I used during practice days are: 444, 555, 755, 553, but whatever I do I have the same problem at that part of the track.
These are some photos of the track. I highlighted with green the track area that I have the problem.
Here are some videos I took during the event to give you a better idea of the track.
Tires I used were Crime fighters M2 and GRP Jolly
What changes do I have to make? Diff oil, shock oils etc…….?