BoP Lab / Drivers / Jason Vinkemulder
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Road America (4.05 mi) | P2 | 4 | +13.533s (10.36%) | +12.216s (9.46%) |
| Mid-Ohio Sports Car Course (2.40 mi) | P2 | 3 | +10.649s (11.50%) | +7.528s (7.15%) |
| Grattan Raceway (2.00 mi) | FM | 4 | +0.000s (0.00%) | +0.000s (0.00%) |
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.
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2026 | FA/P/P2 National Championship Race | P2 | 9 | Spartan VP-025 | 8/11 | 2:21.393 | 2:09.177John Patrick Witherspoon | +12.216s (9.46%) | 142.89/11 | 155.0Matt Strand | -12.2 mph (-7.9%) |
| Runoffs 2026 | FA/P/P2 Qualifying 3 | P2 | 9 | Spartan VP-025 | 11/11 | 2:24.139 | 2:10.606Greg Gyann | +13.533s (10.36%) | 137.011/11 | 148.5Brian Lindstrand | -11.4 mph (-7.7%) |
| June Sprints 2026 | Grp 4 FE2 P P2 Race 2 | P2 | 19 | Spartan VP-025 | 9/6 | 2:12.458Greg Gyann | |||||
| June Sprints 2026 | Grp 4 FE2 P P2 Race 1 | P2 | 19 | Spartan VP-025 | 7/9 | 2:28.233 | 2:09.096Mike Reupert | +19.137s (14.82%) | 133.49/9 | 150.0Mike Reupert | -16.6 mph (-11.1%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Great Lakes Champions 2026 | Grp 8 FA FC FE2 P P2 Race 2 | P2 | 9 | Spartan VP-025 | 2/2 | 1:43.255 | 1:32.606Richard Colburn | +10.649s (11.50%) | 124.72/2 | 139.9Richard Colburn | -15.1 mph (-10.8%) |
| Great Lakes Champions 2026 | Grp 8 FA FC FE2 P P2 Race 1 | P2 | 9 | Spartan VP-025 | 2/2 | 1:52.853 | 1:45.325Richard Colburn | +7.528s (7.15%) | 124.22/2 | 132.6Richard Colburn | -8.5 mph (-6.4%) |
| Great Lakes Champions 2026 | Grp 8 FA FC FE2 P P2 Qual 2 | P2 | 9 | Spartan VP-025 | 2/2 | 1:52.152 | 1:31.090Richard Colburn | +21.062s (23.12%) | 126.72/2 | 140.8Richard Colburn | -14.2 mph (-10.1%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Majors @ Grattan Raceway | Grp4 Race 2 | FM | 10 | Milw | 2/3 | 1:16.903 | 1:16.903you | +0.000s (0.00%) | |||
| Majors @ Grattan Raceway | Grp4 Qualifying 2 | FM | 10 | Milw | 3/2 | 1:18.311Matt Machiko | |||||
| Majors @ Grattan Raceway | Grp4 Race 1 | FM | 10 | Milw | 1/3 | 1:17.417 | 1:17.417you | +0.000s (0.00%) | |||
| Majors @ Grattan Raceway | Grp4 Qualifying 1 | FM | 10 | Milw | 1/1 | 1:45.072 | 1:45.072you | +0.000s (0.00%) |
#38856 from Jason Vinkemulder · Rule change · TB 25-09 (2025-09 Fastrack)
Effective 9/1/25 in Prototype Engine Table, Spec Line K, change the restrictor as follows:
"40mm SIR with fuel injection or 41.5mm venturi with carburetor"
#36904 from Jason Vinkemulder · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. The Club Racing Board appreciates your comments. Please reference our response to letter #36742
in this Fastrack.