P2 Data Collection and Analysis
#29775 from Keith Carter · No action required · Minutes (2020-12 Fastrack)
Thank you for your letter. Please see the response to letter #29822 in this Fastrack's Technical Bulletin.
BoP Lab / Drivers / Keith Carter
Keith Carter 7 letters to Fastrack
Against the front of the class, by track and class
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Virginia International Raceway (3.27 mi) | P1 | 14 | +8.196s (7.51%) | +3.692s (3.42%) |
| Unknown track (3.27 mi) | P1 | 6 | +11.228s (10.84%) | +8.424s (7.96%) |
| Watkins Glen International (3.40 mi) | P1 | 17 | +4.729s (4.05%) | +0.000s (0.00%) |
| Indianapolis Motor Speedway (2.59 mi) | P1 | 5 | +7.525s (8.26%) | +2.260s (2.48%) |
| Unknown track (2.59 mi) | P1 | 2 | +0.000s (0.00%) | +0.000s (0.00%) |
| Road America (4.05 mi) | FE | 8 | +2.349s (1.64%) | +1.412s (0.99%) |
| Mid-Ohio Sports Car Course (2.40 mi) | P1 | 5 | +12.082s (14.24%) | +12.082s (14.24%) |
| Mid-Ohio Sports Car Course (2.26 mi) | P1 | 7 | +3.848s (4.87%) | +2.088s (2.63%) |
| Grattan Raceway (2.00 mi) | P1 | 1 | ||
| New Jersey Motorsports Park (2.25 mi) | P1 | 5 | +0.000s (0.00%) | +0.000s (0.00%) |
| Unknown track (2.14 mi) | FE | 4 | +2.014s (2.21%) | +0.744s (0.80%) |
Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
Virginia International Raceway (3.27 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2019 | P1 Race | P1 | 01 | Stohr WF1 | 14/13 | 1:43.498Todd Slusher | |||||
| Runoffs 2019 | P1/P2 Qual 3 | P1 | 01 | Stohr WF1 | 13/13 | 1:52.285 | 1:42.674Todd Slusher | +9.611s (9.36%) | 146.210/11 | 151.6Greg Bell | -5.4 mph (-3.6%) |
| Runoffs 2019 | P1/P2 Qual 2 | P1 | 01 | Stohr WF1 | 14/13 | 1:43.005Todd Slusher | |||||
| Runoffs 2019 | P1/P2 Qual 1 | P1 | 01 | Stohr WF1 | 13/13 | 2:00.430 | 1:43.173Todd Slusher | +17.257s (16.73%) | 145.910/13 | 154.2Jason Miller | -8.3 mph (-5.4%) |
| Hoosier SCCA Super Tour (North Carolina Region) | Grp 2 FA,FB,P1,P2 Race 2 | P1 | 6 | Stohr WF1 | 11/12 | 1:55.412 | 1:47.666Jason Miller | +7.746s (7.19%) | 147.510/12 | 153.9Doug Piner | -6.4 mph (-4.2%) |
| Hoosier SCCA Super Tour (North Carolina Region) | Grp 2 FA,FB,P1,P2 Race 1 | P1 | 6 | Stohr WF1 | 11/12 | 3:10.482 | 2:10.322Jean-Luc Liverato | +60.160s (46.16%) | 87.811/12 | 139.4William Munholland | -51.7 mph (-37.1%) |
| Hoosier SCCA Super Tour (North Carolina Region) | Grp 2 FA,FB,P1,P2 Qual 2 | P1 | 6 | Stohr WF1 | 9/6 | 2:11.989Todd Vanacore | |||||
| Hoosier SCCA Super Tour (North Carolina Region) | Grp 2 FA,FB,P1,P2 Qual 1 | P1 | 6 | Stohr WF1 | 14/13 | 2:05.097Jean-Luc Liverato | |||||
| Hoosier SCCA Super Tour (North Carolina Region) | Grp 2 FA,FB,P1,P2 Prac | P1 | 6 | Stohr WF1 | 7/3 | 2:36.599Todd Slusher | |||||
| Virginia International Raceway 2017 | Grp 5 FA,FB,P1,P2 Race 2 | P1 | 19 | 7/8 | 1:51.579 | 1:47.887Jacek Mucha | +3.692s (3.42%) | ||||
| Virginia International Raceway 2017 | Grp 5 FA,FB,FC,FE,FM,P1,P2 Race 1 | P1 | 19 | 5/9 | 1:58.296 | 1:51.714Jacek Mucha | +6.582s (5.89%) | ||||
| Virginia International Raceway 2017 | Grp 5 FA,FB,FC,FE,FM,P1,P2 Qual 2 | P1 | 19 | 7/9 | 1:55.648 | 1:48.060Jacek Mucha | +7.588s (7.02%) | ||||
| Virginia International Raceway 2017 | Grp 5 FA,FB,FC,FE,FM,P1,P2 Qual 1 | P1 | 19 | 6/9 | 1:57.317 | 1:49.121Jacek Mucha | +8.196s (7.51%) | ||||
| Virginia International Raceway 2017 | Grp 5 FA,FB,FC,FE,FM,P1,P2 Prac | P1 | 19 | 6/6 | 2:05.000 | 1:52.743Jim Downing | +12.257s (10.87%) |
Unknown track (3.27 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2019 | Grp 4 Run 3 | P1 | 01 | Stohr WF1 | 8/8 | 9:08.835 | 1:46.732Jim Devenport | +442.103s (414.22%) | 149.11/7 | 149.1you | +0.0 mph (0.0%) |
| Runoffs 2019 | Grp 4 Run 2 | P1 | 01 | Stohr WF1 | 8/8 | 1:52.838 | 1:43.845Todd Slusher | +8.993s (8.66%) | 147.08/8 | 155.3Jason Miller | -8.4 mph (-5.4%) |
| Runoffs 2019 | Grp 4 Run 1 | P1 | 01 | Stohr WF1 | 8/7 | 1:45.953Todd Slusher | |||||
| Runoffs 2019 | Grp 4 Run 4 | P1 | 01 | Stohr WF1 | 6/6 | 1:54.846 | 1:43.618Chip Romer | +11.228s (10.84%) | 140.66/6 | 153.3Chip Romer | -12.7 mph (-8.3%) |
| Runoffs 2019 | Grp 4 Run 3 | P1 | 01 | Stohr WF1 | 6/7 | 2:07.175 | 1:45.146Chip Romer | +22.029s (20.95%) | 143.36/7 | 153.0Jim Devenport | -9.7 mph (-6.3%) |
| Runoffs 2019 | Grp 4 Run 1 | P1 | 01 | Stohr WF1 | 5/7 | 1:54.255 | 1:45.831Jim Devenport | +8.424s (7.96%) | 142.85/7 | 150.5Jim Devenport | -7.6 mph (-5.1%) |
Watkins Glen International (3.40 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hoosier SCCA Super Tour Watkins Glen (Finger Lakes Region) | Grp 5 FA,B,C,E,E2,M P1,2 Race 2 | P1 | 6 | Stohr WF1 | 6/4 | 1:45.038John Mcaleer | |||||
| Hoosier SCCA Super Tour Watkins Glen (Finger Lakes Region) | Grp 5 FA,FB,FC,FE,FE2,FM,P1,P2 Race 1 | P1 | 6 | Stohr WF1 | 6/6 | 2:25.303 | 1:46.146John Mcaleer | +39.157s (36.89%) | 91.86/6 | 153.2Greg Bell | -61.3 mph (-40.0%) |
| Hoosier SCCA Super Tour Watkins Glen (Finger Lakes Region) | Grp 5 FA,FB,FC,FE,FE2,FM,P1,P2 Qual 2 | P1 | 6 | Stohr WF1 | 6/5 | 1:45.031John Mcaleer | |||||
| Watkins Glen International 2018 | Grp 2 FA,FB,P1,FC,FE,FE2,FM,P2 Race 2 | P1 | 9 | Stohr WF1 | 2/2 | 1:58.365 | 1:48.318John Mcaleer | +10.047s (9.28%) | |||
| Watkins Glen International 2018 | Grp 2 FA,FB,FC,FE,FE2,FM,P1,P2 Race 1 | P1 | 9 | Stohr WF1 | 2/2 | 2:01.337 | 1:46.978John Mcaleer | +14.359s (13.42%) | |||
| Watkins Glen International 2018 | Grp 2 FA,FB,FC,FE,FE2,FM,P1,P2 Qual 2 | P1 | 9 | Stohr WF1 | 2/1 | 2:27.218John Mcaleer | |||||
| Watkins Glen International 2018 | Grp 2 FA,FB,FC,FE,FE2,FM,P1,P2 Qual 1 | P1 | 9 | Stohr WF1 | 3/3 | 2:01.577 | 1:47.302John Mcaleer | +14.275s (13.30%) | |||
| Watkins Glen International 2018 | Grp 2 FA,FB,FC,FE,FE2,FM,P1,P2 Prac | P1 | 9 | Stohr WF1 | 3/3 | 2:12.617 | 1:47.698John Mcaleer | +24.919s (23.14%) | |||
| Watkins Glen International 2017 | Grp 7 FA,FB,FC,FE,FM,P1,P2 Race 2 | P1 | 09 | 434034 | 3/3 | 1:52.149 | 1:49.062Greg Bell | +3.087s (2.83%) | |||
| Watkins Glen International 2017 | Grp 7 FA,FB,FC,FE,FM,P1,P2 Race 1 | P1 | 09 | 434034 | 2/3 | 1:51.560 | 1:51.560you | +0.000s (0.00%) | |||
| Watkins Glen International 2017 | Grp 7 FA,FB,FC,FE,FM,P1,P2 Qual 2 | P1 | 09 | 434034 | 2/3 | 1:54.644 | 1:51.079Greg Bell | +3.565s (3.21%) | |||
| Watkins Glen International 2017 | Grp 7 FA,FB,FC,FE,FM,P1,P2 Practice | P1 | 09 | 434034 | 2/3 | 2:16.633 | 1:57.102Armen Megregian | +19.531s (16.68%) | |||
| Majors @ Watkins Glen International | Grp 2 Race 2 (Sunday) | P1 | 9 | 9 | 1/2 | 1:51.742 | 1:49.744Greg Bell | +1.998s (1.82%) | |||
| Majors @ Watkins Glen International | Grp 2 Race 1 (Sat) | P1 | 9 | 9 | 2/2 | 1:54.219 | 1:51.597Greg Bell | +2.622s (2.35%) | |||
| Majors @ Watkins Glen International | Grp 2 Qualifying 2 | P1 | 9 | 9 | 1/2 | 1:54.181 | 1:54.181you | +0.000s (0.00%) | |||
| Majors @ Watkins Glen International | Grp 2 Qualifying 1 | P1 | 9 | 9 | 2/2 | 1:55.273 | 1:49.692Greg Bell | +5.581s (5.09%) | |||
| Majors @ Watkins Glen International | Group 2 Practice | P1 | 9 | 9 | 2/2 | 2:01.629 | 1:56.900Greg Bell | +4.729s (4.05%) |
Indianapolis Motor Speedway (2.59 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2017 | P1/FB Race | P1 | 01 | Stohr WF1 BMW | 17/16 | 1:31.499Jim Devenport | |||||
| Runoffs 2017 | P1/FB Qual 4 | P1 | 01 | Stohr WF1 BMW | 4/19 | 1:33.561 | 1:31.301Jim Devenport | +2.260s (2.48%) | |||
| Runoffs 2017 | P1/FB Qual 3 | P1 | 01 | Stohr WF1 BMW | 14/19 | 1:38.577 | 1:31.052Jim Devenport | +7.525s (8.26%) | |||
| Runoffs 2017 | P1/FB Qual 2 | P1 | 01 | Stohr WF1 BMW | 14/18 | 1:41.570 | 5.377John Gyann | +96.193s (1788.97%) | |||
| Runoffs 2017 | P1/FB Qual 1 | P1 | 01 | Stohr WF1 BMW | 17/17 | 2:38.536 | 1:31.651Jim Devenport | +66.885s (72.98%) |
Unknown track (2.59 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2017 | Sun Grp 4 Run 2 | P1 | 01A | Stohr WF1 BMW | 6/10 | 1:41.855 | 1:35.261Jason Miller | +6.594s (6.92%) | |||
| Runoffs 2017 | Sun Grp 4 Run 1 | P1 | 01A | Stohr WF1 BMW | 10/11 | 5.326 | 5.326you | +0.000s (0.00%) |
Road America (4.05 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| June Sprints® 2017 | Grp 5 P2,FE,FM Race 2 | FE | 29 | CHI | 5/16 | 2:23.963 | 2:22.551Dean Oppermann | +1.412s (0.99%) | |||
| June Sprints® 2017 | Grp 5 P2,FE,FM Race 1 | FE | 29 | CHI | 5/18 | 2:24.582 | 2:21.732Sabre' Cook | +2.850s (2.01%) | |||
| June Sprints® 2017 | Grp 5 P2,FE,FM Qual 2 | FE | 29 | CHI | 9/18 | 2:25.317 | 2:22.968Dean Oppermann | +2.349s (1.64%) | |||
| June Sprints® 2017 | Grp 5 P2,FE,FM Qual 1 | FE | 29 | CHI | 8/18 | 2:23.775 | 2:22.126Quinten Nelson | +1.649s (1.16%) | |||
| June Sprints® 2017 | Grp 5 P2,FE,FM Practice | FE | 29 | CHI | 7/18 | 2:23.967 | 2:22.171Dale VandenBush | +1.796s (1.26%) | |||
| Majors @ Road America | G2 Race 2 | FE | 29 | CHI | 10/11 | 2:24.485 | 2:19.042Scott Rettich | +5.443s (3.91%) | |||
| Majors @ Road America | G2 Qualifying 2 | FE | 29 | CHI | 9/10 | 2:27.059 | 34.367Michael Mueller | +112.692s (327.91%) | |||
| Majors @ Road America | G2 Race 1 | FE | 29 | CHI | 8/13 | 2:23.655 | 2:18.359Scott Rettich | +5.296s (3.83%) |
Mid-Ohio Sports Car Course (2.40 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mid Ohio Sports Car Course 2017 | Grp 6 P1,P2,FA,FB,FC,FE,FM Race 2 | P1 | 9 | 434034 | 5/3 | 1:24.827David Locke | |||||
| Mid Ohio Sports Car Course 2017 | Grp 6 P1,P2,FA,FB,FC,FE,FM Race 1 | P1 | 9 | 434034 | 5/4 | 1:24.438David Locke | |||||
| Mid Ohio Sports Car Course 2017 | Grp 6 P1,P2,FA,FB,FC,FE,FM Qual 2 | P1 | 9 | 434034 | 4/3 | 1:24.779David Locke | |||||
| Mid Ohio Sports Car Course 2017 | Grp 6 P1,P2,FA,FB,FC,FE,FM Q1 | P1 | 9 | 434034 | 4/4 | 1:36.933 | 1:24.851Bryan Putt | +12.082s (14.24%) | |||
| Mid Ohio Sports Car Course 2017 | Grp 6 P1,P2,FA,FB,FC,FE,FM | P1 | 9 | 434034 | 5/5 | 1:52.250 | 1:27.488John Gyann | +24.762s (28.30%) |
Mid-Ohio Sports Car Course (2.26 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2016 | P1 Race | P1 | 9 | Stohr WF1 Suzuki | 13/13 | 1:23.572 | 1:19.407Gianpaolo Ciancimino | +4.165s (5.25%) | |||
| Runoffs 2016 | P1 Qual 4 | P1 | 9 | Stohr WF1 Suzuki | 5/13 | 1:19.961 | 1:17.308James Devenport | +2.653s (3.43%) | |||
| Runoffs 2016 | P1 Qual 3 | P1 | 9 | Stohr WF1 Suzuki | 8/13 | 1:25.702 | 1:21.553James Devenport | +4.149s (5.09%) | |||
| Runoffs 2016 | P1 Qual 2 | P1 | 9 | Stohr WF1 Suzuki | 7/13 | 1:22.700 | 1:18.764James Devenport | +3.936s (5.00%) | |||
| Runoffs 2016 | FE/FM Qual 1 | P1 | 9 | Stohr WF1 Suzuki | 5 | ||||||
| Runoffs 2016 | SUN 2 - Gp4 FA/FB/P1 | P1 | 9 | Stohr WF1 | 4/8 | 1:21.372 | 1:19.284James Devenport | +2.088s (2.63%) | |||
| Runoffs 2016 | SUN 1 - Gp4 FA/FB/P1 | P1 | 9 | Stohr WF1 | 4/9 | 1:22.789 | 1:18.941James Devenport | +3.848s (4.87%) |
Grattan Raceway (2.00 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Majors @ Grattan Raceway | Grp4 Qualifying 1 | P1 | 38 | NYR | 1 |
New Jersey Motorsports Park (2.25 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Majors @ New Jersey Motorsports Park | G4:Race 2 FA/B/C/E/M,P1/2 | P1 | 9 | Stohr Wf1/Black | 2/3 | 1:19.628 | 1:18.263Greg Bell | +1.365s (1.74%) | |||
| Majors @ New Jersey Motorsports Park | G4:Race 1 FA/B/C/E/M,P1/2 | P1 | 9 | Stohr Wf1/Black | 1/3 | 1:19.320 | 1:19.320you | +0.000s (0.00%) | |||
| Majors @ New Jersey Motorsports Park | G4:Qualifying 2 FA/B/C/E/M,P1/2 | P1 | 9 | Stohr Wf1/Black | 1/4 | 1:18.702 | 1:18.702you | +0.000s (0.00%) | |||
| Majors @ New Jersey Motorsports Park | G4:Qualifying 1 FA/B/C/E/M,P1/2 | P1 | 9 | Stohr Wf1/Black | 2/4 | 1:19.314 | 1:17.563Greg Bell | +1.751s (2.26%) | |||
| Majors @ New Jersey Motorsports Park | G4:Practice FA/B/C/E/M,P1/2 | P1 | 9 | Stohr Wf1/Black | 1/4 | 1:19.700 | 1:19.700you | +0.000s (0.00%) |
Unknown track (2.14 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Majors @ GingerMan Raceway | Grp 4 Race Sun | FE | 29 | CHI | 5/8 | 1:33.301 | 1:31.281Scott Rettich | +2.020s (2.21%) | |||
| Majors @ GingerMan Raceway | Grp 4 Qualifying Sun | FE | 29 | CHI | 3/6 | 1:33.300 | 1:31.286Scott Rettich | +2.014s (2.21%) | |||
| Majors @ GingerMan Raceway | Grp 4 Race Sat | FE | 29 | CHI | 3/8 | 1:34.283 | 1:33.539Dean Oppermann | +0.744s (0.80%) | |||
| Majors @ GingerMan Raceway | Grp4 Sat Qualifying | FE | 29 | CHI | 5/7 | 1:33.696 | 1:31.633Dean Oppermann | +2.063s (2.25%) |
Letters to Fastrack
P2 Monobloc Calipers
#29685 from Keith Carter · Not recommended · Minutes (2020-12 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. The P2 class is intended to be a relatively
low cost sports racing class, and certain technologies are restricted to further this goal. While the cost of these technologies may
be somewhat lower now than at the inception of the class, revising the rules to allow them would set the standard and create a
perception that they are necessary in order to be competitive, which would ultimately raise the cost of participation for all
competitors in the class.
P1 P1 Weight Reduction
#29683 from Keith Carter · Not recommended · Minutes (2020-12 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. On-track data obtained during the 2020
National Championship Runoffs confirms that the 1.0 liter platform's rate of acceleration is fully in line with and at no
disadvantage to the acceleration rates of other P1 engine platforms, so a 50lb. weight reduction is not warranted.
P1 Request more data input with data boxes
#28198 from Keith Carter · No action required · Minutes (2020-03 Fastrack)
Thank you for your letter. The CRB appreciates the concern for collecting sufficient data for decision
making. There are many factors that influence data collected at any given event; track configuration,
CLUB RACING BOARD
weather conditions, and most important entry list. For Major’s events the entry list is reviewed and
must represent a reasonable mix of engine platforms for data to be collected. The CRB will continue to
monitor the entry lists and collect data where there is a reasonable expectation of good data being
available.
P2 Request for addition of BMW Engine in P2 Engine Table
#27821 from Keith Carter · Rule change · TB 20-01 (2020-01 Fastrack)
In P2 Engine Table, Line B.1, add the following:
"4 cycle Motorcycle-based Kawasaki, Suzuki, Yamaha, Honda, BMW"
P1 Weight Reduction Request for 1000cc Cars
#27596 from Keith Carter · Not recommended · Minutes (2019-12 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. Although Balance of
Performance (BoP) adjustments are used to allow different platforms to race together in the same class,
the criterion for a BoP adjustment is limited to a car's rate of acceleration in a speed range before
aerodynamic drag has a significant effect -- typically between 60 and 100 mph. BoP adjustments are not
used to equalize lap time performance or ensure overall competitiveness, and the Club Racing Board
does not adjust minimum weight or power to allow for differing aerodynamic configurations, brake
systems, or chassis setups. Data obtained during the National Championship Runoffs shows that the
1000cc car's rate of acceleration was fully in line with and not at any disadvantage to the other
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platforms' performance, so an adjustment to the car's minimum weight is not warranted.
P1 Request to review the class disparity
#27257 from Keith Carter · No action required · Minutes (2019-09 Fastrack)
Thank you for your letter. Please see the response to letter #27256 in this Fastrack.