Finished my second track day (night) yesterday, ran with NASA in the DE3 group at the Bondurant Main track. We ran 3 sessions in stead of the usual 4 because it was a night sessions, started at about 6:30pm and ran til midnight.
Last time out on stock tires and brakes I corded 2 of the PS4S tires and toasted the stock brake pads. I went out this time armed with RB rotors and XT910 pads, as well as 265/40-18 Hankook Ventus RS-4 tires. The tires held up great, and the brakes did really well too. The pedal did get a little soft on the 3rd session and I got the "brakes hot" warning on the screen which I found interesting since I did not see that warning my first time around when I cooked the stock pads. I haven't dug in yet to see if I glazed the XT910 pads or maybe boiled the fluid. Last time out I was using Castrol SRF, this time I have Motul 600 in there.
I had a couple people asking questions the car throughout the night, which was kinda fun. One other guy has a P3D and has run it before, but didn't bring it last night due to the same problems with brakes and tires after the first session.
Sessions 1 and 2 were a bit shorter than 20 minutes and used about 30% charge each. The last session we were down a few cars so I got open track a few times, and it ran longer, so I used almost 45%. It was still a chore to charge the car between sessions, but a little less stressful since it used less battery the first 2 sessions than I was expecting. I also bought a Gen I UMC for this time, so I'm getting 40amps instead of 32, so that helped a bit too. This time out I was trying to be first to grid each session. This meant that I needed to unplug and grid up early. I think I'll change my strategy for next time and try to be last to grid, then I can take it easy on the first lap or two until someone comes up behind me. This would have netted me almost an extra hour charging last night, which would have been an extra 10-12%.
I did notice the acceleration starting to get soft once I dropped below 30% SOC. It wasn't terrible, but it was noticeable. I was still able to keep up and pass. I ended the last session with 19% charge left. IIRC from last time out, getting below 10-15% is where it really fell on it's face and I started to get passed quite a bit.
Anyway, all in all it was a fun night. I took 3 videos with a cheap GoPro knockoff, looks like 2 of the 3 are corrupt. I'm working on uploading the one good video, will post when it's done. Also trying to repair the other 2, although I'm doubtful that will work. Will dig into the brakes in a bit here to see what the pads look like too.
Last time out on stock tires and brakes I corded 2 of the PS4S tires and toasted the stock brake pads. I went out this time armed with RB rotors and XT910 pads, as well as 265/40-18 Hankook Ventus RS-4 tires. The tires held up great, and the brakes did really well too. The pedal did get a little soft on the 3rd session and I got the "brakes hot" warning on the screen which I found interesting since I did not see that warning my first time around when I cooked the stock pads. I haven't dug in yet to see if I glazed the XT910 pads or maybe boiled the fluid. Last time out I was using Castrol SRF, this time I have Motul 600 in there.
I had a couple people asking questions the car throughout the night, which was kinda fun. One other guy has a P3D and has run it before, but didn't bring it last night due to the same problems with brakes and tires after the first session.
Sessions 1 and 2 were a bit shorter than 20 minutes and used about 30% charge each. The last session we were down a few cars so I got open track a few times, and it ran longer, so I used almost 45%. It was still a chore to charge the car between sessions, but a little less stressful since it used less battery the first 2 sessions than I was expecting. I also bought a Gen I UMC for this time, so I'm getting 40amps instead of 32, so that helped a bit too. This time out I was trying to be first to grid each session. This meant that I needed to unplug and grid up early. I think I'll change my strategy for next time and try to be last to grid, then I can take it easy on the first lap or two until someone comes up behind me. This would have netted me almost an extra hour charging last night, which would have been an extra 10-12%.
I did notice the acceleration starting to get soft once I dropped below 30% SOC. It wasn't terrible, but it was noticeable. I was still able to keep up and pass. I ended the last session with 19% charge left. IIRC from last time out, getting below 10-15% is where it really fell on it's face and I started to get passed quite a bit.
Anyway, all in all it was a fun night. I took 3 videos with a cheap GoPro knockoff, looks like 2 of the 3 are corrupt. I'm working on uploading the one good video, will post when it's done. Also trying to repair the other 2, although I'm doubtful that will work. Will dig into the brakes in a bit here to see what the pads look like too.
