1/4 Run @ Lap 18 - Unlike any previous version of this setup, this one is capable of running 23.6's and 23.7's fairly consistently. The car cornered extremely well during this part of the run. I could make it stick anywhere, which enabled me to get on the throttle much sooner in the turn. This is key to turning 6's and 7's keeping the speeds up in the corners. At those speeds, the inside temperature on the RF would spike to ~230°F exiting the corner. I tried not to turn too many of those kinds of laps for fear of smoking the RF. Instead, I tried to turn consistent 9's. For all my worry and concern, we ended up having slightly better wear than the previous run.

1/2 Run @ Lap 36 - More of the same as the first 1/4 of the run. Setup not changing much.

End of Run @ Lap 69 - The chassis was definitely more stable the last 1/2 of this run than in the previous run, which I think is what you were trying to accomplish. The 15 laps of transition as the corners all turn yellow was pretty stable. As the run wore on, the car definitely wanted to run a slightly higher line as it became tougher to keep lap times quick at the bottom of the corner. Late in the run, the car picked up our familiar slightly loose condition under braking. Nothing dangerous, but our average slowed 1/10th of a second during the last 10 laps. If you want to run hard, and aren't concerned about the RF temps, I still pulled a 23.8 on lap 64 just to see if it was still capable!

Note: All tire temperature readings were taken at about the 1/3 distance mark of the backstretch.

My comments: The inside temperature on the RF really threw me loopy. It was constantly 215-220 F, and if I pushed it, would spike to ~230 F on the corner exit. I kept out of the throttle in order not to wear it out, but we ended up getting better wear than the previous run. I could have average less than I did. The thing I didn't catch until I after the run was the fact that the middle and outer temperatures on the RF were consistently 200-210 F. The average temperature across the tire was less than the spiking of the inside temp led me to believe. Maybe we can make a camber adjustment and smear that inside spike across the whole RF? Overall the tire temps were cooler than the previous run.

Lap times improved! The first 2/3 of the run, I averaged in the 23.9's. The average for the whole run improved by 6/10th to 24.017 +/- 0.141 secs. The setup really keeps the speeds through the corners. You can get on the throttle quick and really drive it out of the corner. I had many personal best laps with this setup, including a best 23.606 in one of the aborted runs! It takes a lap better than 23.728 to get on my BLAP board.

What would I change? The rev light never comes on, so maybe a gear change to get a little more speed. Still need some more heat in the LF and maybe a tad more in the LR. Camber adjustment to even up the temps across the tires, too. That'll get more of the tire gripping. The car really feels neutral through the corners mostly.

DOWNLOAD THE SETUP

The last set of adjustments were indeed set for the last half of the run. I see at the chart the right sides go orange from 60 laps and up, what are the condition of the left sides during these laps?

Summary:

I noticed that you said that the car moved up a bit in the turns and I am going to try to fix this for this round of adjustments. I am also going to try to get more heat back into the tire.

Adjustments:

• Decrease the RF spring 100lbs, I want this car to turn in ala "hook" when going in the corner.
  
• Decrease the RR rebound by two - I want to fix the loose condition going into the turns.
  
• Decrease the LF rebound by five - helps coming off turns/exiting.
  
• Decrease the LR rebound by two - helps on entry
  
• Increase RARB by one - back to the middle again.
  
• Increase final drive ration by two - better acceleration off of corners.
  
• Decrease RF tire psi by a half lb - entry of corner and helps a tad in the middle
  

Here is the setup with all the changes..

DOWNLOAD THE SETUP

Back

Continue