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BoP Lab / Buttonwillow Raceway Park

FC pace at Buttonwillow Raceway Park

Class · click a class to switch, + to compare alongside
1:451:461:471:481:491:502 rule changes between Cal Club 2025 and Cal Club 20262 ▾FC race best at Cal Club 2025: 1:48.522 (Paul MacFarlane)FC race best at Cal Club 2026: 1:45.314 (Robert Armington)FC qualifying best at Cal Club 2025: 1:50.067 (Paul MacFarlane)FC qualifying best at Cal Club 2026: 1:45.137 (Robert Armington)Cal Club 20252025Cal Club 20262026
FCsolid race · dashed qualifying · slower is lower
EventFC
Qual bestRace bestTrap
Cal Club 2026 CALCL262026-02-211:45.137Robert Armington · 4 cars-4.930s (-4.48%)1:45.314Robert Armington · 4 cars-3.208s (-2.96%)147.5Bill Wallschlaeger+33.0 mph (+28.9%)
2 rule changes (FC: 2)1 weight · 1 othershowhide
  • F2000 MZR Spec Line Clarity/Revision Requested #38927other
  • Adjust F2000 Metrik ZF2 weight #39612weight -20 lbs
Cal Club 2025 CALCL252025-02-221:50.067Paul MacFarlane · 1 car1:48.522Paul MacFarlane · 1 car114.4Paul MacFarlane
19 earlier rule changes on record, in force before Cal Club 2025 (from 2019)8 weight · 6 engine · 3 tyres & wheels · 1 induction · 1 wordingshowhide
  • 9.1.1.10.h. FC Tire Rule #36533tyres & wheels
  • Change FF/FC Weight with Sequential Gearbox #36651weight
  • Four Pot Calipers #35481weight
  • Please correct omitted punctuation #34890weight
  • Review FC Runoffs Tire Marking Rule #34274tyres & wheels
  • USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC #34329weight
  • E&O 9.1.1.B.16.j #33634engine
  • Add Specification to Performance Electronics ECU for Ford Zetec #32761engine
  • Clean up Chassis/Frame section #31867engine
  • Clarify Zetec ECU requirements #31554engine
  • Clarify composite anti-intrusion panel language #31426wording
  • Clarify tire marking requirements #31455tyres & wheels
  • Request for FC Weight Change #30171weight
  • Urgent: SCCA PE3 map unsuitable #29475induction
  • Request for weight adjustments to equalize FC competition. #28888weight
  • Request for Better Zetec Connecting Rods #27710engine
  • Add Alternate Piston #27795engine
  • E&O Wiseco piston and Crower connecting rod #26659weight
  • Correct Wiseco piston and connecting rod #25809weight

Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it and how many cars set a time. 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.