|
|
06-07-2020, 08:13 AM | #133 | |
Lieutenant Colonel
746
Rep 1,848
Posts |
Quote:
When you go to LRP, I think it will be easier for me at least to discuss trail braking or at least lighter braking. Big Bend is THE perfect corner for braking less to carry more speed. If done right, its impossible to get back to throttle early. Uphill and West Bend are also corners to work on braking less. I think you have my data. I didn't have brake pressure at the time, but this formula has a high correlation with brake pressure (at least in terms of shape). Create a math channel to compare how we compare in braking at Big Bend, Uphill and West Bend. I never figured out left hander. abs(IF(EQ(LT(-GPS_LonAcc,0.2),0)-GPS_LonAcc,0)) Last edited by ThunderMoose; 06-07-2020 at 08:18 AM.. |
|
Appreciate
1
Bartledoo2694.50 |
06-07-2020, 08:15 AM | #134 |
Banned
1608
Rep 2,883
Posts |
General statement about my writing.
I am straggling with getting the English correct in one pass, When I read my notes, I notice mistakes that change the meaning. So I constantly edit those content type errors. My apology in advance. If you read my posts on the SAME day I posted, I encourage you to check the next day. If you read my post the next day, I probably edited all the major content type mistakes and it is typically as good as it gets. |
Appreciate
0
|
06-07-2020, 08:36 AM | #136 |
Banned
1608
Rep 2,883
Posts |
|
Appreciate
0
|
06-07-2020, 09:09 AM | #138 |
Lieutenant Colonel
746
Rep 1,848
Posts |
|
Appreciate
0
|
06-07-2020, 09:18 AM | #139 | |
Banned
1608
Rep 2,883
Posts |
Quote:
My goal is to go under 60 this year probably with RR on the rear and Cup2 on the front. I have two front eBay R7 265/35/19 take off. looking like few heat cycles I am saving for NYST. I also two front eBay R7 235/35/19 take off that i have not decided if I will bring to LRP on the 29th or save it for NYST And before anyone jump, having 4 R7 for the price of less then 2 new R7 is not something to give me a hard time about. I get it that new R7s are better. |
|
Appreciate
0
|
06-07-2020, 10:25 AM | #140 | |
.
2067
Rep 2,006
Posts
Drives: E92 M3
Join Date: Oct 2016
Location: MN
|
Quote:
Is that a data synchronization issue or something else? |
|
Appreciate
0
|
06-07-2020, 10:47 AM | #141 | ||
Lieutenant Colonel
746
Rep 1,848
Posts |
Quote:
|
||
Appreciate
0
|
06-07-2020, 11:05 AM | #142 |
Banned
1608
Rep 2,883
Posts |
Respect the eBay 2017 Cup2
7x20min 7x 15min Wear is not bad given two days at NYST @ 1:39-1:42 . I have 3 trackdays back to back, so need to mount new fronts. Otherwise would have tried to go a third day |
Appreciate
0
|
06-07-2020, 01:57 PM | #143 |
Driver
2695
Rep 2,715
Posts |
So, you're saying there is no difference in speed of tires under the Hoosier?
__________________
E90M 6MT Slicktop Single Humper in need of a diet
|
Appreciate
0
|
06-07-2020, 02:58 PM | #144 | |
Banned
1608
Rep 2,883
Posts |
Quote:
All the 100-200 tires I can don 1:38-1:40 give or take. The only one that got me into 1:37 was the ADO8r, but I think that is because it is available in 275/30/19. This is specific to my experience. Meaning E92 M3 3500Lbs with me sitting in. While mine is supercharged. I don't believe it makes a difference from a tire perspective. I comparison, I was on 1:37 pace on the first session third lap the first time I tried RR 235/35/19. With R7 265/35/19 in the second session I was on 1:36 pace, and third session I did my best tine 1:35.7. DSC = on In the afternoon I did 1:36.1 with DSC=off. I am just saying: pick any tire because you like the name or the logo, pay what ever you want. but if you want to go fast, Get RR (inexpensive) or R7/A7. For Dry. Wet is another story, the MPS4S was the fastest for me. |
|
Appreciate
0
|
06-07-2020, 03:09 PM | #145 |
Driver
2695
Rep 2,715
Posts |
Well if you're faster with any version of DSC on, then I'd argue that an accurate conclusion can't be drawn based on your results, since you're not at the limit of what any of the tires can do on a lap. Regardless of that, a 2 second range is quite large on a single lap.
__________________
E90M 6MT Slicktop Single Humper in need of a diet
|
|
06-08-2020, 12:29 PM | #147 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
You're asking a tire to transmit more power to the ground, and then help slow you down after building up higher speeds on the straights. A supercharger will definitely tax the tires more.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
0
|
06-08-2020, 12:40 PM | #148 | ||
Banned
1608
Rep 2,883
Posts |
Quote:
But I am not sure it creates a differentiation among the tires. These 100-200 tread tires are all very good to begin with I think. Anyway, if my point is that all these tires are the same at HPDE event then Chose what ever you like. If you bring your daily to the track, there are more factors to consider. From non-daily, not race prepped car perspective, all these tires are the same. Buy the cheapest. If you want to spend money, Buy R7, A7 or RR |
||
Appreciate
0
|
06-08-2020, 12:59 PM | #149 |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Are you able to see individual wheel speed sensor data on your datalogger? Should be an easy way to see if you're spinning up the rear tires as you accelerate out of the corner.
This might also help illustrate if/where DSC and MDM are helping.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
Appreciate
0
|
06-08-2020, 01:21 PM | #150 | |
Banned
1608
Rep 2,883
Posts |
Quote:
i can see mdm adding typically 20-50 psi brake to one front wheel if the Mdm is on. Typically to outside front |
|
Appreciate
0
|
06-08-2020, 01:25 PM | #151 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
It would be interesting to look at rear wheel speed against time/distance -- so you can see if the wheel speeds spike as you begin applying throttle at corner exit. It would also indicate if MDM is intervening and activating an individual rear caliper to control wheelspin.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
0
|
06-08-2020, 01:41 PM | #152 | |
Driver
2695
Rep 2,715
Posts |
Quote:
__________________
E90M 6MT Slicktop Single Humper in need of a diet
|
|
|
06-08-2020, 02:11 PM | #153 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
@rhyary -- have you considered doing some sort of a blind test for one session? Have someone mount up a set of tires without telling you which ones they are, and see what lap time you can turn. This will remove any conscious or subconscious biases you may have about a particular tire being faster or slower.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
0
|
06-08-2020, 03:58 PM | #154 | ||
Banned
1608
Rep 2,883
Posts |
Quote:
I manage the traction I have the best I can at the moment. I honestly don't say to my self I have R7, drive this way, or I have Cup2 drive that way. All data is analyzed back when I am at home. |
||
Appreciate
0
|
Bookmarks |
|
|