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Timothy Bennett >>
Lap Times (sec)
Best Worst Average Std Dev Variance
start (laps 1-23) 23.625 24.441 23.897 0.205 0.042
middle (laps 24-46) 23.633 24.262 23.881 0.141 0.020
end (laps 46-69) 23.744 24.837 24.055 0.249 0.062
total (laps 1-69) 23.944 0.214 0.046
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!
Tire Wear
Lap Wear Indicator Color
19 RF turns light green
22 RR turns light green
26 LR turns light green
27 LF turns light green
30 RF turns yellow
34 RR turns yellow
39 LR turns yellow
41 LF turns yellow
56 RF turns orange
65 RR turns orange
Tire Temperatures (°F)
LF RF
Lap O M I I M O
18 198 195 189 229 208 218
36 196 193 187 227 206 216
69 184 180 175 216 198 204
LR RR
Lap O M I I M O
18 206 199 190 216 198 199
36 201 195 186 209 193 194
69 194 189 181 205 191 190
Note: All tire temperature readings were taken at about the 1/3 distance mark of the backstretch.
My comments: This setup was a bit faster and a bit looser than any previous run. During the first 2/3 of the run I shaved off about a full second off my best lap time and my average lap time from the previous run. Now averaging in the upper 23.8's during the first 2/3 of the run. Shaved about 1/2 second of my average lap time during the last 1/3 the run as well. For the entire run, we are now averaging less than 24 seconds at 23.944 +/- 0.214 secs.
Consistency, however, suffered a bit during this run. Standard deviation was larger by about 1/2 second. The car got looser as the run wore on. While I had many really fast laps, I also had few where I was dirt trackin' it through Turns 1 and 2. It was considerably loose braking entering Turn 1.
Tire temps were up all around the car, especially on the left side where it +10F during the first 1/2 of the run. By the end of the run, the tire temps were about the same as the previous run. Tire wear increased somewhat -- I suppose that is in direct relation to the improved lap times.
Julian Data >>
Setup Adjustments: (time to start taming this setup!)
- RF Tire PSI: Put the .50 lb back in: Stiffen the front up as I am going to alleviate the looseness underbraking.
- RF Spring: increase by 30lbs. (Remember as you trail brake going in all the weight it being shifted to the RF)
- Camber Adjustment: add .2º for the RF and take out .2º for the LF. Working tire wear.
- RR Dampener Rebound: 20. Working underbraking here.
PS: I know I am going to be working on the left sides more! :)
Timothy Bennett >>
Lap Times (sec)
Best Worst Average Std Dev Variance
start (laps 1-23) 23.632 24.111 23.813 0.121 0.015
middle (laps 24-46) 23.681 24.399 23.945 0.158 0.025
end (laps 46-69) 23.808 24.255 23.993 0.114 0.013
total (laps 1-69) 23.917 0.150 0.023
1/4 Run @ Lap 18 - A little tight while the tires are still cold, but still fast out of the box. No real complaints about the setup. Feels good through the turns. Just a tick loose under braking. I found a good line that I could turn consistent quick laps. On the bottom of the track through Turns 1 and 2, and about a 1/2 lane off the bottom through Turns 3 and 4. Off the throttle a tad sooner than when I naturally want to. Runs consistent 23.7's and keeps the tire temps reasonable. Very steady.
1/2 Run @ Lap 36 - Still really quick. Seemed to tighten up a tad during the first part of this segment. Car wanted to run about a 1/2 lane higher. Then, during the transition when the RF tire wear indicator showed yellow and the RR tire wear indicator still showed light green, the car got really loose entering the corners. Braking compounded the problem. After the transition period, the car settled back down. Pretty stable except during that transition time.
End of Run @ Lap 69 - The really quick laps vanished during the last half of the run as the tires wore, though the car was really consistent. Could run consisent 23.9's. The setup felt mostly fine. A little loose during RF/RR transition periods, but much better than the Run #7. The car definitely wanted to run a higher line the last part of this run. Lap times were faster on the higher line than when I tried forcing the car to the bottom of the track.
Tire Wear
Lap Wear Indicator Color
19 RF turns light green
22 RR turns light green
26 LR turns light green
27 LF turns light green
29 RF turns yellow
34 RR turns yellow
40 LR turns yellow
41 LF turns yellow
58 RF turns orange
67 RR turns orange
Tire Temperatures (°F)
LF RF
Lap O M I I M O
18 187 185 180 214 198 205
36 190 187 183 219 202 210
69 184 180 175 217 201 207
LR RR
Lap O M I I M O
18 198 192 183 207 192 192
36 198 191 183 203 188 189
69 194 189 181 204 190 189
Note: All tire temperature readings were taken at about the 1/3 distance mark of the backstretch.
My comments: This setup, while not significantly faster than Run #7, was definitely capable of turning more consistently fast laps. The extreme bad nasty laps at the beginning and end of the run disappeared. BLAPs were not quite as fast, but close.
- Overall average lap time improved from 23.944 +/- 0.214 secs to 23.917 +/- 0.15 secs, picking up a 1/4 second and significantly improving consistency.
- Shaved almost a full second off the average lap time of the first 23 laps to 23.813 +/- 0.121! Consistently fast!
- Shaved a hair off the average lap time for the last 23 laps, but the improvement in consistency is amazing. Run #7 had a standard deviation of the last 1/3 of the run at almost 1/4 second. Run #8 boasts a stunning 0.114 second deviation during the same last 1/3 of the run. Again, not a fast top end, but the car wasn't a hand full during those tire wear transitions either!
- The middle 1/3 of the run, however, did worsen in all lap time areas: BLAP, WLAP, average, and standard deviation.
Tire wear was pratically the same. In fact, long term wear seemed to slightly improve. I guess that accounts for the more consistent lap times during the last 1/3 of the run. Tire temperatures were significantly lower, but seemed to hold fairly steady through the duration of the run (except maybe the LF).
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