BoP Lab / Michelin Raceway Road Atlanta
FX vs FC vs FB pace at Michelin Raceway Road Atlanta
Quickest here: FX 1:25.399 Trent Walko, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta race · FC 1:23.672 Brandon Dixon, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta race
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| Qual best | Race best | Trap | Qual best | Race best | Trap | vs FX | % of FX | Qual best | Race best | Trap | vs FX | % of FX | |||
| Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST26MAR062026-03-06 | 1:23.854Brandon Dixon · fastest of 3 · top 3 within 8.1s-5.116s (-5.75%) | 1:23.672Brandon Dixon · fastest of 3 · top 3 within 9.3s-6.776s (-7.49%) | 138.7Brandon Dixon+12.1 mph (+9.6%) | ||||||||||||
2 rule changes (FC: 2)1 weight · 1 wording · FC USF2000 Tube Frame may use Hewland LD200 4-speed H-pattern as alternative to Hewland JL-200 5-speed sequential. · FC F2000 Metrik ZF2 minimum weight reduced to 1220 lbs.show
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| Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta ST25MAR072025-03-07 | 1:28.970Eric Presbrey · fastest of 2+3.675s (+4.31%) | 1:30.448Carter Sheets · fastest of 2+4.896s (+5.72%) | 126.6Carter Sheets-3.0 mph (-2.3%) | ||||||||||||
6 rule changes (FX: 3, FC: 3)3 weight · 2 cars added · 1 tyres & wheels · FX Ligier JS F422 loses 15 lbs, to 1360 minimum weight. · FC tire limit reduced to four dry and four wet for Regional/Major/Super Tour, eight for Runoffs. · FF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs. · FX Ligier JS F4 1st Gen minimum weight drops to 1405 lbs; 2nd Gen rises to 1375 lbs. · FC adds F2000 Metrik ZF2 with Ford Zetec engine and four-piston Brembo calipers as spec-line car. · FX adds 2nd Gen Ligier JS F422 classification effective 2024-04-01.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08 | 1:34.337Brad Yake · only car+5.991s (+6.78%) | 1:36.351Brad Yake · only car+10.952s (+12.82%) | 117.3Brad Yake-19.8 mph (-14.4%) | 1:25.295Brandon Dixon · fastest of 7 · top 5 within 4.5s+0.613s (+0.72%) | 1:25.552Tim Minor · fastest of 6 · top 5 within 4.9s-1.803s (-2.06%) | 129.6Tim Minor-7.1 mph (-5.2%) | -10.799squal -9.042s | 88.8%qual 90.4% | |||||||
6 rule changes (FX: 3, FC: 3)2 cars added · 1 engine · 3 wording · FX Formula 4 now complies with Table 1 notes only; removed reference to FIA 2015 technical regulations and FIA/SCCA safety requirements. · F600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional. · Unable to summarize: FX Formula Mazda spec changes reference attached document not provided. · FC tire marking rule clarified: four dry and wet tires for Regionals, eight each for Runoffs; damaged tire replacement procedures revised. · USF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX. · USF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST23MAR102023-03-10 | 1:24.682Brandon Dixon · fastest of 5 · top 5 within 8.8s+0.469s (+0.56%) | 1:27.355Brandon Dixon · fastest of 3 · top 3 within 4.6s+3.270s (+3.89%) | 136.6Brandon Dixon-3.7 mph (-2.7%) | ||||||||||||
9 rule changes (FX: 7, FC: 2)2 engine · 1 cars added · 1 induction · 1 weight · 4 wording · FX: Wording clarified to remove references to FB and FM in GCR section 1.4.2.D. · FC/FF PE3-8400 ECU monitor firmware version reduced from V3.04.50 to V3.04.35. · Formula Renault 2.0 (10-17) reclassified from FX to FA; weight reduced to 1280 lbs, restrictor removed. · Pro Formula F2000 tube frame reduced to 4 forward gears, sequential carries 25 lb. weight penalty. · FX Formula Mazda minimum weight exception set to 1270 lb. · FX Formula Mazda engine spec changed to six-port 13B only; weight now per notes instead of 1350/1400. · FC Ford Zetec Performance Electronics ECU model renamed PE-3 to PE3-8400; Monitor firmware updated to V3.04.50. · Formula Renault 2.0 (10-17) now requires 45mm Flat Plate Intake Restrictor; fairings prohibited before or after. · USF2000 Tube Frame may now use Performance Electronics PE3-8400 ECU as alternative to Pectel T2.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST22MAR122022-03-12 | 1:28.346Trent Walko · fastest of 4 · top 4 within 6.6s+0.215s (+0.24%) | 1:25.399Trent Walko · fastest of 4 · top 4 within 5.7s-2.391s (-2.72%) | 137.1Trent Walko+2.7 mph (+2.0%) | 1:24.213Tim Minor · fastest of 6 · top 5 within 4.9s-0.324s (-0.38%) | 1:24.085Tim Minor · fastest of 5 · top 5 within 4.3s+0.024s (+0.03%) | 140.4Tim Minor+6.2 mph (+4.6%) | -1.314squal -4.133s | 98.5%qual 95.3% | |||||||
11 rule changes (FX: 7, FC: 4)4 tyres & wheels · 1 cars added · 5 wording · 1 other · Formula Mazda tire marking no longer required; compliance now referenced to updated online specifications document. · FX Formula 4 tire choice becomes unrestricted; must comply with FIA F4 2015 Technical Regulations and subsequent safety requirements. · FX USF2000 Tube Frame front tyre changes from radial to unspecified type, rear tyre options added. · FX Formula Renault 2.0 (00-17) tire choice unrestricted; original components required except repairs. · FC chassis/frame section reorganized: anti-intrusion panels between main tubes clarified, suspension mounting restrictions strengthened, firewall requirements reworded. · FC Zetec ECU requirements clarified: Pectel T2 or Performance PE-3 required with specific communications ports and SCCA tune-file/map. · FC composite anti-intrusion panels of non-uniform thickness limited to eight fasteners per side. · FC tire marking rules clarified: competitor responsible for declaring, marking, and logging tires with Tech before qualifying or race. · FX USF2000 Tube Frame allows Hoosier radials 20.5x7.0x13 front and 22.5x8.0x13 rear, FC-compliant shocks, Wilwood brakes, Bosch spark plugs. · FX USF2000 Tube Frame now allows any Hoosier radial tire 20.5x7.0x13 front, 22.5x8.0x13 rear. · FX adds 2000-2009 Formula Renault 2.0 / Fran-Am 2000 classified at 1250 lbs with sealed 2.0L Renault F4R 832 engine.show
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| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST21MAR192021-03-19 | 1:28.131Austin Hill · fastest of 6 · top 5 within 3.8s | 1:27.790Austin Hill · fastest of 6 · top 5 within 4.1s | 134.4Austin Hill | 1:24.537Brandon Dixon · fastest of 5 · top 5 within 8.8s | 1:24.061Brandon Dixon · fastest of 5 · top 5 within 6.2s | 134.2Brandon Dixon | -3.729squal -3.594s | 95.8%qual 95.9% | |||||||
15 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)5 cars added · 3 weight · 1 engine · 6 wording · FC Pinto engine loses 10 lbs to 1190; Pinto aluminum head loses 10 lbs to 1190; Zetec loses 10 lbs to 1210. · Formula Renault 2.0 (2010–2017) newly classified in FX, must comply with Table 1 notes. · FX FormulaSPEED FS2.0 specification requirements updated; World Speed Inc. deadline removed, compliance now per SCCA website. · FC: Pectel T2 and Performance PE-3 ECU maps clarified; SCCA Club or 2013 Pro map required. · Formula Ireland / Formula FX added to FX classification under Table 1 with compliance notes. · FC Zetec engine minimum weight increases 20 lbs to 1220 lbs. · Formula Ireland/Formula FX car addition to FX Table 1 pending specification submission; not recommended. · Ex-Pro Formula Super Vee classified in FX with 1190 lbs minimum weight, 1600cc or 1835cc VW engine, 6in front and 8in rear wheels. · FormulaSPEED reclassified from FA to FX with 2.0L Mazda MZR engine, 1350 lbs minimum weight, sealed ECU and dampers. · FX Formula Mazda no longer requires tire marking; must comply with December 2019 GCR rules. · Pro Formula F 2000 Tube Frame engine now must follow current FC rules with restricted ECU map, cams, and air restrictor required. · FC Zetec connecting rods now allow Eagle #CRS5483F3D in addition to original Ford. · FC adds Mahle #930169439 piston as alternate option to existing Ford, Sealed Power, and United Engine choices. · FC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams. · FC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams.show
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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. "% of FX" is the class's best as a share of FX's best at the same event (100% is level, less is quicker): weather and track condition move every class together, so this compares across years where the raw times do not. It still breaks when FX's own field changes or one session was wet and another dry. 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.