I thought since I had to change my car a little for this track, I would share the thought behind the changes.
First off, I normally start any track with my normal base setting that I’m very used to driving. For all you KYOSHO guys, that’s my Neo setup, but with 5/5/5, or 5/5/3 diff oil.
After my first run , my car was very reactive. Any little movement of the steering made the car unstable. That normally means on high grip that your front diff oil is too thin. I changed to 10k and it really helped. Normally when you go up in the front, you need to go up in center as well. It will give too much power to the front and just pull the car around. One way to also know if you need to go up in the center is your tire wear. If your front tires are wearing much faster than your rears, you need to go up in the center. I went to 10k in the center as well, I left the rear as I started with 5 and I don’t go higher than that. The diffs is the first change you want to make on high traction, after that you can then tell if anything else needs to be adjusted.
With the high temps and high speeds, I felt my shocks too soft. I changed from 45/30 to 50/35.
Next my front end was still feeling soft. I tried a stiffer spring, but didn’t like the feel. After that I moved my front upper arm up to have a stiffer roll. That felt better than the spring because it only changed the stiffness in the turns, not really on the jumps.
After that I changed front sway bar from 2.3 to 2.5. Again just just help with front end roll. That really help give me a more consistent feel. On high grip and high speed you want front end stability.
Most people change caster right away on high grip. They go to more caster. For me I normally don’t like that. I tried 16 degree in the last practice, I didn’t like the feel. More caster is like moving weight back in the car. For me I like the weight in the front, it just needs to be stiffer.
That’s where I’m at right now. Hope that gives a little light as to the thought process on some setup changes. Thanks for reading and God Bless.