Racing brake claims that you are dropping almost 25 lb if you put on all four rotors. And all that unsprung so that's reasonably significant. I put fronts on several weeks ago and I'm about to put rears on. They also look a lot better.
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5% increase in power
- Thread starter Carotene
- Start date
Racing brake claims that you are dropping almost 25 lb if you put on all four rotors. And all that unsprung so that's reasonably significant. I put fronts on several weeks ago and I'm about to put rears on. They also look a lot better.
n2mb_racing
Active Member
Yeah, I ran 20 min / 20 mile sessions and used over 100 miles of range. Makes sense, I saw the trip meter at 1200 wHr / mile.
In three sessions, I went from fully charged at 310 miles down to 9 miles. I was charging between runs, but only had about 20-30 minutes to charge at 240v 32a between sessions.
Thanks for the data!
I was definitely surprised to see 169mi rated burned in 25min. No charging was available at the track that day either. :|
timk225
Active Member
P3D+
Dragy 0-60 MPH
85% SOC
5.15: = 3.54 seconds (multiple runs)
8.3 = 3.46 seconds (multiple runs)
5.15 Chill = 7.78 seconds
I can definitely feel the power difference.
Launch technique: Enable Brake hold, hover foot away from accelerator and stomp on it quickly
Dragy 0-60 MPH
85% SOC
5.15: = 3.54 seconds (multiple runs)
8.3 = 3.46 seconds (multiple runs)
5.15 Chill = 7.78 seconds
I can definitely feel the power difference.
Launch technique: Enable Brake hold, hover foot away from accelerator and stomp on it quickly
Zcd1
Active Member
Seems like the increased power is indeed there...
Has anyone posted updated 1/4 mile times since 5% update?
Has anyone posted updated 1/4 mile times since 5% update?
I got the update last night. I’m only able to comment on feel.
I feel like the throttle response was kicked up a notch. And definitely feel a slight big more pull higher up. But this is only initial feel, I haven’t had much opportunity to play.
Not matter what happens, it’s a little extra power on an already powerful car, most of us aren’t going to notice much unless they are actually collecting data.
Should be more noticeable on the non P cars.
I feel like the throttle response was kicked up a notch. And definitely feel a slight big more pull higher up. But this is only initial feel, I haven’t had much opportunity to play.
Not matter what happens, it’s a little extra power on an already powerful car, most of us aren’t going to notice much unless they are actually collecting data.
Should be more noticeable on the non P cars.
Leafdriver333
Somewhat Active Member
StealthP3D
Well-Known Member
On the other hand, if the upgrade was a free-flow exhaust the extra rumble would be causing owners to rave about how much more power they felt - a night and day difference, LOL! Never mind that a dyno might show a slight gain on the high end with a slight decrease in torque lower down.
This increase had no downside and a nice bump up top, albeit without any increased decibels, thank you very much!
SleeperService
Member
Data you say? ...still waiting on the update, but here's some data for 2019.5.15 that I'll compare to 2019.8.4 (or whatever I end up with when I finally get it...). A smartphone is ALMOST as good as a dyno these days.
Accelerometer DAQ
StealthP3D
Well-Known Member
Data you say? ...still waiting on the update, but here's some data for 2019.5.15 that I'll compare to 2019.8.4 (or whatever I end up with when I finally get it...). A smartphone is ALMOST as good as a dyno these days.
Accelerometer DAQ
I look forward to the comparison. What kind of phone recorded this and how was it mounted? I assume it needs to be level to the ground for the best performance? Did you calibrate the accelerometer to zero before the run?
SleeperService
Member
Original Pixel. I had the phone docked in the car. It was calibrated, and then I subtracted the gravity vector from the data to bring it to "0" at rest (column F in the spreadsheet). The phone has a 3-axis accelerometer, so being level is not necessary as long you zero out the gravity for each axis and then sum them together. Used Physics Toolbox Pro to do the data capture then analyzed the data in Google Sheets.
SammichLover
Banned
How hard have you pushed them for heat? I have to figure out what to do about discs, I'm not tracking again with the stock discs after beating them up to the point of needing them turned last time out.
I considered the MPP Big Brake front kit but they require you to run 19" rims, so I'm trying to find another option that'll still stand up to heat better.
Re: charging with or without track mode enabled. I tried both ways yesterday and with track mode on there doesn’t seem to be any SoC gain, or very little. I settled on driving around the pits at 5mph for a few minutes after a session to cool the brakes off then plugging it in w/track mode enabled. Then after about 10 min when I could hear the fans step down to the level they’re at when you engage track mode (before any hard driving) I turned off track mode and got as much charging as I could. Works for me.
I don't know whether supercharging with track mode on would help. But a typical destination charger should not be powerful enough to require extra cooling.
Btw how much % did you consume per regular track day session? Were you still able to do 3 sessions?
I think it’s not that the destination charger requires extra cooling it’s that the batteries and motors get very hot. My thinking is it’s good to let them cool down from extreme heat before asking them to accept more charge. Shrug.
I used a ton of charge each session, I got 4ish 20 min sessions in but my first couple involved coming in with the instructor to debrief for a few min so they weren’t full 20 min sessions. I came in with 8 % and did the last guy at the track thing so I could get home
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