BoP Lab / Michelin Raceway Road Atlanta
FC vs F6 vs SRF3 pace at Michelin Raceway Road Atlanta
Quickest here: FC 1:23.672 Brandon Dixon, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta race · F6 1:30.014 Clint McMahan, Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta qualifying · SRF3 1:33.550 Peyton Long, Atlanta Region SCCA Hoosier Super Tour @ Michelin Raceway Road Atlanta qualifying
| Event | FC | F6 | SRF3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs FC | % of FC | Qual best | Race best | Trap | vs FC | % of FC | |||
| 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%) | 1:30.039Calvin Stewart · fastest of 4 · top 4 within 13.3s+0.025s (+0.03%) | 1:33.719H Cory Mcleod · fastest of 3 · top 3 within 14.2s+3.452s (+3.82%) | 137.8Calvin Stewart+5.7 mph (+4.3%) | +10.047squal +6.185s | 112.0%qual 107.4% | 1:33.550Peyton Long · fastest of 51 · top 5 within 0.3s-0.053s (-0.06%) | 1:34.016Robeson Clay Russell · fastest of 50 · top 5 within 0.4s+0.231s (+0.25%) | 129.9Grant Vogel+7.5 mph (+6.2%) | +10.344squal +9.696s | 112.4%qual 111.6% | ||
7 rule changes (FC: 2, SRF3: 5)1 weight · 5 wording · 1 other · SRF3 spark plugs restricted to NGK LTR7IX-11 P/N G301041 only, washers and sealing rings prohibited. · 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. · SRF3 adds HD Oil Cooler P/N G1148500 as alternative to standard cooler P/N G480503. · SRF3 brakes restructured: Hawk Blue 801993 pads, Wilwood 800065 rotors only; adds Girling 880358, Wilwood 880357, Tilton 880360 master cylinders. · SRF drivers with disabilities may modify seat and controls for safety and comfort with approval and logbook notation. · SRF SADEV-SRF3 6-speed sequential transmission gear ratios wording clarified, effective 2025-04-01.show
| |||||||||||||||
| 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%) | 1:33.603Peyton Long · fastest of 40 · top 5 within 0.5s-0.354s (-0.38%) | 1:33.785Richard Baldwin · fastest of 40 · top 5 within 0.1s-0.388s (-0.41%) | 122.4Arvid Albanese+0.2 mph (+0.1%) | +3.337squal +4.633s | 103.7%qual 105.2% | |||||||
9 rule changes (FC: 3, SRF3: 6)2 tyres & wheels · 2 weight · 1 cars added · 1 suspension & brakes · 3 wording · 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. · SRF3 air filter rule removes K&N RC-9160 option, leaving only P/N WM301020 allowed. · SRF brake rotor minimum thickness increases from 12.20mm to 13.25mm, Wilwood vented rotor P/N 800065. · SRF3 Hoosier logo placement changes from four decals to three decals in different locations. · SRF Hoosier decal requirement reduced from four decals in specific locations to three decals with simpler placement rules. · SRF wet tires: P185/60R13 H20/W2 option removed; P185/65R13 W2 front now required with P205/60R13 W2 rear. · SRF3 alternator pulley minimum weight reduced from 12 oz to 11 oz. · FC adds F2000 Metrik ZF2 with Ford Zetec engine and four-piston Brembo calipers as spec-line car.show
| |||||||||||||||
| Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta ST24MAR082024-03-08 | 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%) | 1:30.014Clint McMahan · fastest of 8 · top 5 within 4.6s-5.777s (-6.03%) | 1:30.267Clint McMahan · fastest of 8 · top 5 within 4.8s-4.980s (-5.23%) | 132.1Calvin Stewart-3.7 mph (-2.7%) | +4.715squal +4.719s | 105.5%qual 105.5% | 1:33.957Grant Vogel · fastest of 40 · top 5 within 0.4s-0.238s (-0.25%) | 1:34.173Thomas Weir · fastest of 43 · top 5 within 0.5s-0.312s (-0.33%) | 122.2Robeson Clay Russell-6.6 mph (-5.1%) | +8.621squal +8.662s | 110.1%qual 110.2% | ||
9 rule changes (FC: 3, SRF3: 6)2 tyres & wheels · 1 cars added · 1 engine · 4 wording · 1 other · F600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional. · SRF rain/brake light now requires Super Bright LEDs Inc. P/N PT-STRB-R24 with specific connector and rain light switch. · SRF requires Super Bright LEDs P/N PT-STRB-R24 rain/brake light with strobing capability and specific wiring. · SRF adds brake duct and pedal extension rules, rear shift cable clamp option, camber limit to 5.0°, radiator opening height 3.5" ±0.5", and P2 engine restrictor changes. · SRF radiator rule clarified: P/N 480466 replaceable with Automotive P/N 1R698, CU698 or manufacturer equivalent with documentation. · 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. · SRF Hoosier wet front tire updated to P/N 46100 P185/60R13 H20 or W2. · SRF Hoosier front rain tyre part number changes from 46100 to 46101 P185/65R13 W2.show
| |||||||||||||||
| 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 | 1:27.355Brandon Dixon · fastest of 3 · top 3 within 4.6s | 136.6Brandon Dixon | 1:35.791George Bugg · fastest of 5 · top 5 within 8.8s | 1:35.247H Cory McLeod · fastest of 5 · top 5 within 9.3s | 135.8Jack Walbran | +7.892squal +11.109s | 109.0%qual 113.1% | 1:34.195Charles Russell Turner · fastest of 36 · top 5 within 0.9s | 1:34.485Mark Eaton · fastest of 36 · top 5 within 0.3s | 128.8Derek Schofield | +7.130squal +9.513s | 108.2%qual 111.2% | ||
34 earlier rule changes on record, in force before Atlanta Region Hoosier SCCA Super Tour @ Michelin Raceway Road Atlanta (from 2019)4 suspension & brakes · 4 weight · 3 tyres & wheels · 1 cars added · 1 engine · 21 wording · SRF Renault Alliance solid front rotors banned; restrictor reduced 35mm to 34mm for 2011+ Kawasaki; minimum weight increased to 1100 lbs for 2009+ stock engines. · SRF3 tail sections allowed on SRFs with GEN3 airbox shimming up to 19 mm; alternate dash panel P/N 180100 or 180101 relocated in rules. · FC/FF PE3-8400 ECU monitor firmware version reduced from V3.04.50 to V3.04.35. · FC Ford Zetec Performance Electronics ECU model renamed PE-3 to PE3-8400; Monitor firmware updated to V3.04.50. · SRF tire rule wording changed from 'Tires: must be run as delivered' to 'Tires must be run as delivered.' · SRF brake rotor minimum thickness reduced from 13.25 to 12.20mm; seal and air filter rules clarified. · 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. · SRF front wet tire changes from P185/60R13 H20 to P185/65R13 W2; SRF3 adds mandatory G301048 restrictor plate Jan. 1, 2022. · 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. · SRF wet tyres add Hoosier P185/60R13 W2 front and P205/60R13 W2 rear as alternatives to H20. · SRF adds SADEV-SRF3 6-speed sequential option with final drive 3.20 versus OEM 5-speed 3.85. · SRF seal procedures clarified: unsealed components need CSR inspection and logbook notation instead of engine removal. · SRF3 alternator pulley restricted to P/N G902130 or G902130A, 12oz minimum weight. · FC Pinto engine loses 10 lbs to 1190; Pinto aluminum head loses 10 lbs to 1190; Zetec loses 10 lbs to 1210. · SRF and SRF3 mandatory identification simplified: removed Ford Performance and Blue Oval decals, kept Hoosier logo placement. · SRF shocks, springs, bump stops sealed; rear springs 412-429 lbs/in P/N 280390 only; previous parts no longer allowed. · FC: Pectel T2 and Performance PE-3 ECU maps clarified; SCCA Club or 2013 Pro map required. · FC Zetec engine minimum weight increases 20 lbs to 1220 lbs. · SRF3 shock absorber brand restriction removed; all shocks must be sealed by Enterprises. · SRF3 bump stop now must be SCCA P/N 280407 only, no modifications, optional, max one per shock. · SRF shock absorber bump stop clarified: only SCCA P/N 280407 allowed as delivered, maximum one per shock, effective 05/01/2020. · SRF rain and brake rule wording updated; supersedes GCR 9.3.32.B.2 effective 1/1/202 through 12/31/2024. · 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. · SRF bans tire warmers and cooling methods other than natural air convection or conduction. · SRF front nose weight minimum reduced from 35 to 32 lbs. · SRF3 reclassified as Spec Racer Ford 3 with 1.6L conversion; SRF2 becomes Regional Only Class. · SRF drivers may now use Dash Windscreen Kit P/N 1180103 or P/N 180102. · SRF3 nose assembly must use approved multi-piece design; no modifications allowed except as specified. · FC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams. · SRF3 brakes now allow Hawk Blue 9012 pads P/N 801993 only; shocks simplified to Penske P/N 280396 sealed assembly only, with optional SCCA Enterprises bump rubber P/N 280407 from 05/01/2020. · FC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams.show
| |||||||||||||||
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 FC" is the class's best as a share of FC'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 FC'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.