- 1,485
- Hampshire
- Lionheart2113
Your tuning guides keep getting better and better, and this proves it! Great new way of describing and it allows people the chance to go step by step with you, if they choose, and be able to learn what you are talking about by feeling what the car is actually doing at that particular phase of tuning.👍X-Bow Tuning Notes
I thought that I would open up my tuning notes due to a recent question in the forums. This is how I approach building a tune from scratch.
1. Default settings (not PDs, my own)
2. Transmission
3. LSD tuning
4. Ballast tuning
5. Springs
6. Dampers
7. Toe and camber
8. Fine tuning, usually one more time through most settings trying up or down a few numbers based upon my tuning guide.
My Default Setting:
Ride Height 75/75 (stock)
Springs 4.00/8.50 (stock)
Dampers Compression 3/3 (stock)
Dampers Extension 3/3 (stock)
Anti-Roll Bars 3/3 (stock)
Camber 0.0/0.0
Toe 0.00/0.00
Brake balance 5/5
LSD 12/12/12
Ballast 0
Ballast Position 0
Weight Distribution 40:60
Massive exit oversteer, starting right after weight transfer and gets increasingly worse all the way through corner exit. It does not seem to be totally throttle induced. Even on high speed corners where exit leads to a slower corner, so little throttle is applied, the condition is there. The car is a terrible drive and out of control.
- Camber to 1.5/1.5 = I tested this just because of the new 1.09 physics. Camber did little to help the situation. The car is so terrible that I cannot tell if camber made things worse or just kept things just as awful.
- LSD to 14/10/15 = a car that I can almost drive without spinning out. This was a big improvement, but the car is still way to easy to lose the rear from mid-corner to exit.
- Ballast from 0@0 to 50kg at -35 position and 42:48 weight distribution = This is enough tuning to easily gold this time trial event. I can now complete laps with the car but with very little confidence on corner exit. The rear still kicks out passing mid-corner, but with just LSD and Ballast tuned, I can at least catch the car when in misbehaves.
- Springs to 5.00/8.00 looking for less mid-corner steering and more rear grip = this helped the exit oversteer problem, but hurt turn in and mid-corner. The car now has an ok entry, a lazy push mid-corner and still has exit oversteer.
- Springs to 4.50/8.00 and dampers adjusted to DC 4/2 and DE 4/4 = a car that I can now push hard. A little tame on entry and still loose on exit but very driveable.
- Fine tuning over a series of runs - LSD to 15/9/15, DC 3/2, DE 4/5, ARB 3/2 and toe to 0.0/+0.10 = A pretty good car, but still with that bad habit of very late corner exit oversteer. If this tune is going to be really fast, it needs help late exit.
- Toe to +0.10/+0.12 = as I expected, the positive front toe number made the car more aggressive on corner entry and more tame on corner exit. The increase in positive rear toe also helped rear grip once weight had transferred. These settings still work the same 1.08 and 1.09.
- Toe to +0.12/+0.15 = more of the same in the right direction. Over this amount was starting to create a little understeer mid-corner. This setting will probably remain the best.
- Looking to gain late corner exit rear grip without hurting entry and mid-corner.
- LSD to 15/8/15 = This LSD change really helped calm the exit oversteer. There is still some. I also kind of lost a little steering mid-corner to late exit. Need to get that back.
-Dampers to DC 3/2, DE to 4/6, ARB to 4/2 = attempting to hold both front and rear down to keep the good behavior from mid-corner working all the way through exit. This did exactly what I wanted in the medium speed and high speed corners, but it really hurt the low speed corners with additional exit oversteer.
- Damper DE to 4/7, ARB back to 3/2 = a strong car now and pretty fun to drive. A bit of helpful lift off drift into the corner, but it can catch you out.
-Ride height to 70/75 = as expected, reduced front grip which calmed down the exit oversteer issue. RH seems to work as programmed, but backward to real world physics.
- Ride Height to 72/75 = spot on.
- LSD to 15/8/17 = made the entry drift more in control. It is still useful to gain car rotation, but it is faster because you are able to drive more smoothly.
- Brake Balance to 6/5 = just to calm it a little more on entry.
That's it. This is where I am stopping with this tune. It is fast and fun to drive and the settings are no longer bringing back significant gains.
Questions or comments?
(Top 500 as of now, almost 11s below gold), and, you guessed it, the car is still awesome!
