BoP Lab / Buttonwillow Raceway Park
FB vs F5 vs FE2 pace at Buttonwillow Raceway Park
Quickest here: FE2 1:08.250 Caleb Shrader, Super Tour Feb 2023 qualifying
| Event | FB | F5 | FE2 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs FB | Qual best | Race best | Trap | vs FB | |||
| Super Tour Feb 2026 CALCL262026-02-21 | 1:39.265Jon McClintock · fastest of 3 · top 3 within 1.5s-0.093s (-0.09%) | 1:40.253Jon McClintock · fastest of 3 · top 3 within 2.2s+0.541s (+0.54%) | 156.6Paul Marino+29.4 mph (+23.1%) | ||||||||||
2 rule changes (FE2: 2)1 cars added · 1 other · FE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only. · FE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook.show
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| Super Tour Feb 2025 CALCL252025-02-22 | 1:39.358Paul Marino · fastest of 4 · top 4 within 1.5s+31.108s (+45.58%) | 1:39.712Paul Marino · fastest of 4 · top 4 within 1.7s | 127.2Tom Hope | ||||||||||
| No rule changes on record between these events | |||||||||||||
| Super Tour Feb 2023 CALCL232023-02-24 | 1:08.250Caleb Shrader · fastest of 4 · top 4 within 5.8s | ||||||||||||
18 rule changes (F5: 16, FE2: 2)3 engine · 2 weight · 1 cars added · 1 induction · 9 wording · 2 other · F500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 from 493/593 non-HO allowance, added Moto Tassinari V3120-794A-2 option for non-HO. · F500 Rotax engines now permit Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU. · F500 clarifies stepped diameter exhaust headers prohibited except at cylinder head flange area. · F500 Rotax 593 intake boot options clarified; oil injection pump removal now permitted. · F500 Majors and Runoffs cars must install AIM part #X47KPFSOLO2R0 data box mount for Solo or Solo 2. · F5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors and Runoffs. · F5 clarifies mechanical shifting only; throttle-cut and flat-shifter devices permitted if driver retains full control. · F5 single-seat open-wheel cars: rigid suspension becomes limited suspension in class definition. · F500 Rotax 593 HO engine now permitted; 875 lbs minimum weight, MA0242SP1020A or MA0242SP1063A restrictor, specific intake boots and piston required. · F500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019. · FE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed. · F5 request to adjust external jetting device cockpit control denied; no rule change made. · F5 driver adjustable carburettor mixture: refer to separate Fastrack letter #28359 for ruling. · F5 cockpit adjustment request response published in Fastrack letter 28359. · F500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced to 28mm from 29mm. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited. · F500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 minimum weights increase to 900 lbs.show
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| Super Tour Apr 2019 ST19APR262019-04-26 | |||||||||||||
About this data
Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it, how many cars set a time that session and how close the top five were; a best from fewer than three cars is greyed. With two or more classes, "vs" is the gap of each class's best to the first class's at the same event. Newest event first. The coloured figure under each value is the change from the previous event that has one (green is quicker, red slower). Whole laps only, so events with different sector layouts still compare. Weather and track condition are not accounted for.