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BoP Lab / Buttonwillow Raceway Park

F6 + P1 at Buttonwillow Raceway Park

No mapCal Club 2024, Cal Club 2023

Track map: sectors and speed trap

Track map with timing sectors and speed trap
Shown for: Cal Club 2022 (practice, qualifying, race)
Class · click a class to switch, + to compare alongside
Track configuration
Events

This track has been raced on 3 configurations (19, 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.92 mile layout are shown; switch above to see the others.

One lap is left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.

PosCarDriverClass#LapTheoreticalQualRace5-lap stintConsistencyTrapS1S2S3
1Elan DP02Chip RomerP126, 621:06.404 D-Q21:06.4041:06.404 D-Q21:34.210 E-R11:35.424 C-R1+1.444 C-R1138.5 C-P35.076 C-Q227.630 C-Q230.427 C-Q2
2Dauntless-Stohr P07dJohn ManfroyP1081:08.162 D-Q21:08.1621:08.162 D-Q21:40.351 C-R11:41.119 C-R1+1.441 C-R1135.7 C-R137.462 C-Q229.002 C-Q232.052 C-Q2
3Elan DP02/MazdaJim DevenportP1231:08.300 D-Q21:08.3001:08.300 D-Q21:35.355 C-R11:35.659 C-R1+0.595 C-R1136.6 C-Q234.890 C-Q227.833 C-Q230.480 C-Q2
4Stohr WF1Aaron Bailey >115%P1151:33.548 E-Q21:33.5481:33.548 E-Q21:34.665 E-R11:35.329 E-R1+1.248 E-R1138.5 E-Q235.223 E-Q227.872 E-Q230.470 E-Q2
5Elan DP02Todd Slusher >115%P1821:34.228 E-Q21:33.4461:34.228 E-Q21:34.284 E-R1:36.708 E-R2+1.745 E-R2135.0 E-R34.821 E-Q228.133 E-Q230.492 E-Q2
6Elan DP02Matthew Romer >115%P1291:34.765 C-Q21:34.4641:34.765 C-Q21:35.534 C-R11:36.398 C-R1+1.674 C-R1136.4 C-R135.682 C-Q228.016 C-R130.766 C-Q2
7Dauntless StohrJohnnie Crean >115%P1361:36.753 E-Q21:36.3201:36.753 E-Q21:39.157 E-R11:39.679 E-R1+2.199 E-R1137.3 E-Q236.505 E-Q228.645 E-Q231.170 E-Q2
8Elan DP02Rod Rice >115%P1331:37.039 C-P1:36.6591:38.317 C-Q11:38.971 C-R11:39.728 C-R1+1.525 C-R1136.2 C-R136.218 C-P29.168 C-P31.273 C-P
9Norma M20fcJoseph Moran >115%P171:41.041 E-Q21:40.7521:41.041 E-Q21:44.292 E-R12:12.654 E-R1+7.426 E-R1131.8 E-Q237.854 E-Q230.531 E-Q232.367 E-Q2
10Elan DP02Chris Vian >115%P1491:41.659 C-P1:41.3631:42.096 C-Q21:43.024 C-R11:44.525 C-R1+3.433 C-R1127.1 C-R137.899 C-P30.734 C-P32.730 C-Q2
11KBS Mark VJeff JorgensonF6721:59.670 C-R21:59.1612:00.926 C-Q21:59.670 C-R22:00.247 C-R1+0.791 C-R1104.7 C-R243.771 C-R236.720 C-R238.670 C-R1

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

CarClassDriversLapQualRaceTrapS1S2S3
Elan DP02P161:06.404Chip Romer1:06.404Chip Romer1:34.210Chip Romer138.5Chip Romer34.821Todd Slusher27.630Chip Romer30.427Chip Romer
Dauntless StohrP121:08.162John Manfroy1:08.162John Manfroy1:39.157Johnnie Crean137.3Johnnie Crean36.505Johnnie Crean28.645Johnnie Crean31.170Johnnie Crean
Stohr WF1P111:33.548Aaron Bailey1:33.548Aaron Bailey1:34.665Aaron Bailey138.5Aaron Bailey35.223Aaron Bailey27.872Aaron Bailey30.470Aaron Bailey
Norma M20fcP111:41.041Joseph Moran1:41.041Joseph Moran1:44.292Joseph Moran131.8Joseph Moran37.854Joseph Moran30.531Joseph Moran32.367Joseph Moran
KBS Mark VF611:59.670Jeff Jorgenson2:00.926Jeff Jorgenson1:59.670Jeff Jorgenson104.7Jeff Jorgenson43.771Jeff Jorgenson36.720Jeff Jorgenson38.670Jeff Jorgenson

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Cal Club 2022 → Cal Club 2023 2022-02-17 to 2023-02-24

P1 E&O Clarification of Bodywork Rules

#32468 from Club Racing Board · Rule change · TB 22-05 (2022-04 Fastrack)

Summary

wordingP1 bodywork rules clarified: cycle fenders prohibited, side body minimum height at front axle centerline required, air ducting for downforce banned.

As printed in Fastrack

In P1, GCR section 9.1.8.B.C.2, add the following:
"Cycle-type fenders (which that cover only the tire and are not continuous with the rest of the body) and may thereby permit a
view of the ground from above are prohibited."
In P1, GCR section 9.1.8.B.C.3, add the following:
"As viewed from the side, T the outermost surface of body between the front and rear wheel openings and above the floor must
have a minimum height equal to the height of the front axle centerline."
In P1, GCR section 9.1.8.B.D.1, add the following:
"It is not permitted to duct air through any part of the bodywork for the purpose of providing aerodynamic downforce on the

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car. This prohibition includes openings above the front spoiler or splitter that allow air to pass through the front bodywork for the
purpose of providing aerodynamic downforce."

P1 Clarify authorization to use flat plate intake restrictor

#32964 from Club Racing Board · Rule change · TB 22-08 (2022-08 Fastrack)

Summary

wordingP1 motorcycle-based engines with individual throttle bodies must install flat plate restrictors within 4 inches of primary butterfly.

As printed in Fastrack

In P1, GCR section 9.1.8.B.J.7, add the following:
"On 4-cycle motorcycle-based engines equipped with individual throttle bodies, individual flat plate intake restrictors must be
installed within 4 inches of the primary butterfly throttle shaft or centerline on the intake side of the individual throttle body's
primary butterfly."

P1 E&O clarification regarding forced induction

#33123 from Club Racing Board · Rule change · TB 22-10 (2022-10 Fastrack)

Summary

slowerP1 forced induction banned: turbocharging and supercharging no longer allowed.

As printed in Fastrack

In P1, GCR section 9.1.8.B.J, add a new part and renumber the section accordingly:
"1. Turbocharging and supercharging are not allowed."

P1 Clarify body panel coverage of suspension components

#33318 from Club Racing Board · Rule change · TB 22-11 (2022-11 Fastrack)

Summary

slowerP1 aerodynamic devices limited to 1cm below lower surfaces rear of front axle; body panels covering suspension cannot be airfoil-shaped.

As printed in Fastrack

In P1, GCR section 9.1.8.B.D.1, add the following:
"No aerodynamic devices (e.g. "skirts," body sides) may extend more than 1cm (0.394 inches) below a lower surface anywhere
on the car to the rear of the front axle. Seat bucket or other protrusions shall not circumvent this rule. Aerodynamic devices shall
be securely mounted on the entirely sprung part of the car and not be movable when the car is in motion. It is not permitted to
duct air through any part of the bodywork for the purpose of providing aerodynamic downforce on the car. This prohibition
includes openings above the front spoiler or splitter that allow air to pass through the front bodywork for the purpose of
providing aerodynamic downforce. Body panels intended to cover suspension components as viewed from the side and above
must not be shaped as an airfoil cross-section or create a pressure differential from the action of air flowing over the upper and

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lower surfaces of the panel."

Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23

P1 November 2022 Rules Clarification for Suspension Covers

#33615 from Michael Devins · Rule change · TB 23-01 (2023-01 Fastrack)

Summary

slowerP1 suspension covers must have symmetrical upper and lower surfaces, no airfoil shaping, cannot angle for downforce.

As printed in Fastrack

In P1, GCR section 9.1.8.B.D.1, effective 3/1/23, change as follows:
"Body panels intended to cover suspension components as viewed from the side and above must not be shaped as an airfoil
cross-section or create a pressure differential from the action of air flowing over the upper and lower surfaces of the
panel. Upper and lower panel surfaces must be symmetrical (mirror images) across a straight line connecting the center of the
leading edge with the center of the trailing edge. Leading and trailing edges may be rounded. Panel angle front to rear and side
to side is unrestricted, but it is not permitted to angle the body panels for the purpose of providing aerodynamic downforce on
the car."

P1 E&O - Correct dimensional equivalents

#34018 from Club Racing Board · Rule change · TB 23-04 (2023-04 Fastrack)

Summary

wordingP1 cockpit length dimension corrected from 23.662 to 23.622 inches; height and extension limits clarified with metric-imperial equivalents.

As printed in Fastrack

In P1, GCR section 9.1.8.B.C.3, change as follows:
"Height: No part of the vehicle having special or significant aerodynamic function shall exceed a height of 115cm (45.275 inches)
above the ground with car in normal racing trim, driver aboard."
In P1, GCR section 9.1.8.B.C.4, change as follows:
"However, no portion shall extend more than 10cm (3.937 inches) beyond a plane tangent to the outer face of the front and rear
wheels with tires."
In P1, GCR section 9.1.8.B.C.6.b, change as follows:
"Cockpit length: 60cm (23.662 622 inches). Cockpit width for each seat: 45cm (17.717 inches) maintained over 30cm (11.811

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inches)."

P1 SIR Testing

#34354 from Jeff Shafer · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

wordingP1 SIR testing procedure modified: vehicle deemed compliant if stalls within 3 seconds.

As printed in Fastrack

In P1, GCR section 9.1.8.B.J, add a new section and re-letter the following sections accordingly:
"3. The SIR testing procedure in Appendix F. Technical Glossary (Restrictor, Intake) is modified as follows: If the vehicle stalls
within 3 seconds, the vehicle is deemed compliant with the stall test."

P1 E&O Single Inlet Restrictor abbreviation, etc.

#34369 from Club Racing Board · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

wordingP1 Single Inlet Restrictor wording clarified; all intake air or fuel-air mixture must pass through it.

As printed in Fastrack

In P1, GCR section 9.1.8.B.J.2, change as follows:
"Where a carburetor or fuel injection restriction is specified, a flat plate intake restrictor, restricted venturi, or Single Inlet
Restrictor (SIR) is required through which, all intake air for each cylinder or the entire fuel-air mixture, if prepared before this
point, shall must pass through the restrictor."

P1 E&O Clean up ducted air provision

#34410 from Club Racing Board · Rule change · TB 23-06 (2023-05 Fastrack)

Summary

wordingP1 ducted air rule clarified: cockpit opening, fender louvers, and engine bay heat escape devices exempt from heat exchanger requirement.

As printed in Fastrack

In P1, GCR section 9.1.8.B.D.2, change as follows:
"All ducted air that exits through the top of the bodywork behind the rear of the front tires must pass through a heat
exchanger., excluding This requirement does not apply to the cockpit opening, fender louvers, or slots, louvers, grills, and similar
devices for allowing intended to allow heat to escape the engine bay, shall pass through a heat exchanger."

P1 Please correct omitted punctuation

#34890 from Club Racing Board · Rule change · TB 23-10 (2023-09 Fastrack)

Summary

engineF600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional.

As printed in Fastrack

In Cars and Equipment, GCR section 9.3.33.B.2, add the following:
"(Effective 1/1/2024) A red taillight meeting FIA Standard 8874-2019, Technical List No. 76, is required on all Formula (open
wheel) and Sports Racing cars."
In Appendix F. Technical Glossary, Minimum Weight, change as follows:
"Minimum Weight: – Weight specified with driver, exactly as they come off the race circuit, at the conclusion of any race or
qualifying session."
In FA Table 1, Spec Line E notes, add the following:
"Any BD series iron or alloy cylinder block and alternate crankshaft permitted."

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In FC, GCR section 9.1.1.B.11.c, change as follows:
"The Mazda MZR LF-DE 2 liter for use only in USF2000 cars, as described in the Spec Line Cars Table below.""
In F600, GCR section 9.1.1.D.14, add the following:
"Rotax Model 494, Model 493, and Model 593 must use a single expansion chamber and must be equipped with a pull starter;
an electric starter may be added."
In P1, GCR section 9.1.8.B.J.2, add the following:
"Where a flat plate intake restrictor, restricted venturi, or Single Inlet Restrictor (SIR) is required, all intake air for each cylinder
or the entire fuel-air mixture, if prepared before this point, must pass through the restrictor."

P1 Adjust restrictors and weights for Engine Table lines H and I

#35229 from Club Racing Board · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

slowerP1 4-cycle 2000cc restrictor increases to 32mm, weight rises to 1450 lbs; 2300cc restrictor to 31mm, weight to 1475 lbs.

As printed in Fastrack

In P1 Engine Table, change as follows:
P1 Engine Table
Spec
Line Engine Series Max. Displ.
(cc)
Max
Valves /
Cyl.

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Req’d Restrictor Min. Weight (lbs) Notes
H 4 cycle 2000 4 30 32mm SIR 1400 1450
I 4 cycle 2300 4 30 31mm SIR 1445 1475

P1 Revise Group CN Honda K20A-FD2 Spec Line

#35337 from Formula/Sports Racing Committee · Rule change · TB 24-01 (2024-01 Fastrack)

Summary

unclearP1 Group CN Honda K20A-FD2 removes engine modification restrictions; CRB may add intake restrictor.

As printed in Fastrack

In P1 Engine Table, Spec Line G, change as follows:
P1 Engine Table
Spec
Line Engine Series Max. Displ.
(cc)
Max
Valves /
Cyl.

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Req’d Restrictor Min. Weight (lbs) Notes
G Group CN-spec
Honda K20A-FD2 2000 4
Stock Honda intake
manifold with
unmodified 64mm
single throttle body
1400
No engine modifications except dry sump oil
system, ECU map, and exhaust. Must use stock
Honda OEM parts as listed in CN Honda K20A-
FD2 Parts List found here:
https:/www.scca.com/pages/technical-forms-and-
downloads. No machining allowed. The CRB
reserves the right to add an appropriately sized flat
plate intake restrictor at any time if warranted by
the data.

What the rules allowed changed as listed; this does not say what any particular car ran.