BoP Lab / Buttonwillow Raceway Park

FV + SRF3 + FF at Buttonwillow Raceway Park

No mapCal Club 2024

This track has been raced on 2 configurations (The Circuit, 2.57 mi; 2.92 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.

One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Tom Burt in Cal Club 2025 PM (1:42.300; the car's best in any other session was 1:52.334 and the rest of the class's best all week 1:50.233).

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	Glamdring	Mark Edwards	FV	74	1:44.706 B-P	1:44.592	2:05.638 A-Q1	2:04.892 A-R2	2:06.364 A-R2	+2.303 A-R2	128.9 B-P	28.863 B-P	30.228 B-P	45.501 B-P
2	SWIFT DB-6 Honda	Edward Erlandson 2+ cars	FF	8	1:49.259 A-P									47.766 A-P
3	SCCA Ent SRF3	Caleb Shrader	SRF3	99	1:50.233 B-Q2	1:49.967	1:50.233 B-Q2	1:50.825 B-R2	1:51.100 B-R2	+0.469 B-R2	133.6 A-Q2	30.136 B-P	31.672 B-P	48.159 B-P
4	SCCA Ent SRF3	Calvin Harris	SRF3	42	1:50.359 B-Q2	1:50.339	1:50.359 B-Q2	1:51.127 B-R2	1:51.474 B-R2	+0.477 B-R2	112.4 B-Q2	30.212 B-Q2	31.791 B-Q2	48.336 B-Q2
5	SCCA Ent SRF3	John Black	SRF3	17	1:50.578 B-Q2	1:50.265	1:50.578 B-Q2	1:50.980 B-R1	1:51.262 B-R1	+0.649 B-R1	134.8 A-P	30.260 B-Q2	31.841 B-Q1	48.164 B-Q1
6	SCCA Ent SRF3	Todd Harris	SRF3	24	1:50.578 B-Q2	1:50.578	1:50.578 B-Q2	1:51.673 B-R1	1:51.973 B-R2	+0.681 B-R2	110.6 B-R1	30.259 B-Q2	31.845 B-Q2	48.474 B-Q2
7	SCCA Ent SRF3	Taylor Harris	SRF3	12	1:50.673 B-Q2	1:50.589	1:50.673 B-Q2	1:51.241 B-R2	1:51.430 B-R2	+0.243 B-R2	114.1 B-R1	30.347 B-Q2	31.916 B-Q2	48.326 B-Q2
8	SCCA Ent SRF3	Mike Miserendino	SRF3	11	1:50.810 B-Q2	1:50.282	1:50.810 B-Q2	1:51.796 B-R2	1:52.073 B-R2	+0.352 B-R2	135.7 A-Q2	30.282 B-Q2	32.022 B-R1	47.978 A-P
9	SCCA Ent SRF3	Steve Fogg	SRF3	21	1:50.892 B-Q2	1:50.770	1:50.892 B-Q2	1:51.698 B-R1	1:51.962 B-R2	+0.636 B-R2	129.9 A-R1, A-Q2	30.379 B-Q2	32.043 B-Q2	48.348 B-Q2
10	SCCA Ent SRF3	Asad Nikadambaev	SRF3	144	1:50.913 A-Q2	1:50.913	1:50.913 A-Q2	1:52.070 A-R2	1:52.270 A-R2	+0.491 A-R2	136.8 A-Q1	30.477 A-Q2	31.965 A-Q2	48.471 A-Q2
11	SCCA Ent SRF3	TJ Acker	SRF3	62	1:51.005 B-Q2	1:50.844	1:51.005 B-Q2	1:51.755 B-R2	1:52.016 B-R1	+0.510 B-R1	110.3 B-Q1	30.314 B-Q2	32.118 B-Q2	48.412 B-Q2
12	Piper DL7-Honda	Eric Poulsen	FF	48	1:51.118 B-R1	1:50.744	1:52.044 B-Q1	1:51.118 B-R1	1:51.583 B-R1	+3.025 B-R1	114.7 B-R1	30.276 B-R1	31.650 B-R1	48.818 B-R1
13	SCCA Ent SRF3	Robert Edmison	SRF3	22	1:51.118 B-P	1:50.565	1:51.136 B-Q2	1:51.601 B-R2	1:52.033 B-R2	+1.171 B-R2	136.5 A-P	30.175 B-Q1	31.846 B-Q1	48.544 B-Q1
14	SCCA Ent SRF3	EJ Abed	SRF3	27	1:51.304 B-Q2	1:51.214	1:51.304 B-Q2	1:52.103 B-R2	1:52.228 B-R2	+0.387 B-R2	136.8 A-Q1	30.360 B-Q2	32.113 B-Q2	48.741 B-Q2
15	SCCA Ent SRF3	Sean O'Boyle	SRF3	67	1:51.453 B-P	1:51.248	1:51.799 B-Q2	1:52.231 B-R2	1:52.285 B-R2	+0.523 B-R2	135.9 A-R2	30.363 B-P	32.200 B-P	48.685 B-P
16	SCCA Ent SRF3	Jon McClintock	SRF3	23	1:51.704 B-Q2	1:51.653	1:51.704 B-Q2	1:52.510 B-R2	1:52.779 B-R2	+0.754 B-R2	134.4 A-R1	30.416 B-Q2	32.353 B-P	48.884 B-Q2
17	Caracal C1	Marjorie Lundberg	FV	24, 70	1:51.773 B-P	1:51.773	2:04.579 A-Q2	2:02.255 B-R1	2:02.701 B-R1	+0.787 B-R1	122.3 A-Q2	30.462 B-P	32.246 B-P	49.106 B-P
18	SCCA Ent SRF3	Andre Perra	SRF3	77	1:51.816 B-P	1:51.816	1:52.314 B-Q2				111.0 B-Q2	30.534 B-P	32.284 B-P	48.998 B-P
19	SCCA Ent SRF3	Eric Hand	SRF3	76	1:51.935 B-P	1:51.718	1:52.618 B-Q1	1:52.736 B-R2	1:53.362 B-R2	+1.041 B-R2	132.2 A-Q2	30.479 B-Q2	32.325 B-P	48.914 B-P
20	SCCA Ent SRF3	Paul Marino	SRF3	14	1:52.092 B-P	1:51.882	1:52.338 B-Q1	1:52.816 B-R1	1:53.859 B-R2	+0.588 B-R2	138.9 A-Q2	30.539 B-Q1	32.391 B-P	48.952 B-Q1
21	SCCA Ent SRF3	Michael Neumeyer	SRF3	9	1:52.163 A-Q2	1:52.058	1:52.163 A-Q2	1:53.546 A-R1	1:53.921 A-R2	+0.745 A-R2	133.4 A-Q1, A-Q2	30.713 A-Q2	32.218 A-Q2	49.127 A-Q1
22	SCCA Ent SRF3	Graham Woodd	SRF3	52	1:52.194 B-Q2	1:51.959	1:52.194 B-Q2	1:52.959 B-R2	1:53.231 B-R2	+0.687 B-R2	112.4 B-Q1	30.631 B-Q2	32.483 B-Q1	48.845 B-Q2
23	SCCA Ent SRF3	Mark Ballengee	SRF3	197	1:52.334 B-Q2	1:51.955	1:52.334 B-Q2	1:52.715 B-R1	1:53.509 B-R1	+1.364 B-R1	137.8 A-Q1	30.821 B-R1	32.309 B-R1	48.825 B-Q2
24	SCCA Ent SRF3	Tom Burt	SRF3	45	1:52.334 B-Q2	sector data unreliable	1:52.334 B-Q2	1:52.708 B-R1	1:53.274 B-R2	+0.810 B-R2	136.6 A-Q1	30.694	32.318	44.841
25	SCCA Ent SRF3	Umberto Milletti	SRF3	34	1:52.385 B-Q1	1:51.777	1:52.385 B-Q1	1:52.925 B-R1	1:53.355 B-R2	+0.505 B-R2	136.1 A-R2	30.406 B-Q1	32.405 A-Q2	48.966 B-R1
26	SCCA Ent SRF3	Lee Douglas	SRF3	2	1:52.386 B-P	1:51.976	1:52.580 B-Q1	1:53.371 B-R1	1:54.213 B-R1	+1.557 B-R1	115.4 B-P	30.589 B-P	32.398 B-Q1	48.989 B-Q1
27	SCCA Ent SRF3	Rob Pielsticker	SRF3	33	1:52.435 A-Q2	1:52.394	1:52.435 A-Q2	1:53.632 A-R2	1:53.816 A-R1	+0.453 A-R1	136.8 A-P	30.944 A-Q2	32.477 A-Q2	48.973 A-Q2
28	SCCA Ent SRF3	Paul Goudy	SRF3	127	1:52.763 B-P	1:52.211	1:53.151 B-Q2	1:53.038 B-R2	1:53.595 B-R2	+0.957 B-R2	138.5 A-Q1	30.530 B-P	32.469 B-R2	49.212 B-P
29	SCCA Ent SRF3	Maguire Dickerhoof	SRF3	43	1:52.777 A-Q2	1:52.777	1:52.777 A-Q2	1:53.722 A-R2	1:54.380 A-R2	+1.053 A-R2	137.6 A-Q2	31.056 A-Q2	32.628 A-Q2	49.093 A-Q2
30	SCCA Ent SRF3	Chris Strand	SRF3	49	1:52.795 B-P	1:52.475	1:55.168 B-Q1	1:56.794 B-R2	1:58.272 B-R2	+2.172 B-R2	111.6 B-P	30.631 B-P	32.583 B-P	49.261 B-P
31	SCCA Ent SRF3	Tom Miserendino	SRF3	15	1:52.801 B-P	1:52.302	1:53.154 B-Q2	1:53.280 B-R1	1:53.865 B-R2	+0.398 B-R2	130.1 A-Q1	30.778 B-Q2	32.383 B-P	49.141 B-Q1
32	SCCA Ent SRF3	Vince Balch	SRF3	65	1:53.036 B-Q2	1:53.036	1:53.036 B-Q2	1:54.674 B-R1	1:55.749 B-R1	+1.552 B-R1	133.4 A-Q2	30.700 B-Q2	32.651 B-Q2	49.685 B-Q2
33	SWIFT DB-	Edward Erlandson 2+ cars	FF	54	1:53.098 A-Q1	1:53.041	1:53.098 A-Q1	1:54.741 A-R2	1:56.774 A-R2	+1.819 A-R2	133.7 A-Q1	30.951 A-Q1	32.299 A-Q1	49.791 A-Q1
34	SCCA Ent SRF3	Jay Rosenthal	SRF3	55	1:53.237 B-Q1	1:52.918	1:53.237 B-Q1	1:53.706 B-R1	1:54.392 B-R2	+0.535 B-R2	136.6 A-Q1	31.035 B-Q1	32.580 B-Q1	49.303 B-Q2
35	SCCA Ent SRF3	Clayton Powers	SRF3	70	1:53.237 B-P	1:52.990	1:53.631 A-Q2	1:54.845 A-R1	1:55.266 A-R1	+0.979 A-R1	134.1 A-Q2	30.988 B-P	32.714 A-Q2	49.288 B-P
36	SCCA Ent SRF3	John Arscott	SRF3	81	1:53.623 B-Q2	1:53.288	1:53.623 B-Q2	1:54.918 B-R2	1:55.509 B-R2	+0.858 B-R2	108.7 B-Q1	30.895 B-Q1	32.634 B-Q2	49.759 B-Q2
37	SCCA Ent SRF3	Michael Moshay	SRF3	16	1:54.242 B-R2	1:53.982	1:54.826 B-Q2	1:54.242 B-R2	1:54.930 B-R2	+1.338 B-R2	129.8 A-Q2	31.118 B-R2	33.024 B-R2	49.840 B-R2
38	SCCA Ent SRF3	Denny Fosdick	SRF3	69	1:54.932 B-P	1:54.830	1:55.479 B-Q1	1:56.082 A-R2	1:57.089 A-R1	+1.298 A-R1	128.4 A-P	31.449 B-P	33.388 A-Q1	49.993 B-P
39	Swift Db6	Johnnie Crean	FF	35	1:54.993 A-R2	1:54.490	1:55.247 A-Q2	1:54.993 A-R2	1:56.752 A-R2	+1.519 A-R2	124.5 A-R2	31.358 A-Q1	32.841 A-R2	50.291 A-R2
40	SCCA Ent SRF3	Doug Stewart	SRF3	71	1:55.021 B-P	1:54.732	1:55.878 B-Q1	1:55.200 B-R2	1:55.941 B-R2	+1.304 B-R2	130.4 A-Q1	31.406 B-P	33.145 B-R2	50.181 B-P
41	SCCA Ent SRF3	Don Palla	SRF3	37, 30	1:56.524 B-Q2	1:55.911	1:56.524 B-Q2	1:57.682 A-R2	1:58.063 A-R2	+0.973 A-R2	125.7 A-R2	31.402 B-Q2	33.317 B-Q2	51.192 B-R1
42	SCCA Ent SRF3	David Roth	SRF3	7	1:56.755 A-R2	1:56.607	1:57.730 A-Q2	1:56.755 A-R2	1:57.810 A-R2	+2.186 A-R2	132.7 A-P	32.055 A-Q2	33.685 A-R2	50.867 A-R2
43	SCCA Ent SRF3	Alice Kutsyy	SRF3	111	1:57.255 B-P	1:57.236	1:59.043 B-Q1	1:59.139 B-R1	2:01.752 B-R1	+6.376 B-R1	104.7 B-R1	32.212 B-P	33.871 B-P	51.153 B-P
44	SCCA Ent SRF3	Gary Knesevitch	SRF3	63	1:57.788 B-R2	1:57.025	1:58.429 B-Q2	1:57.788 B-R2	1:58.928 B-R2	+2.951 B-R2	103.5 B-R1	32.046 B-R2	34.221 B-R1	50.758 B-R2
45	DART II	Mace Gjerman	FV	89	1:58.898 A-R2	1:56.799	2:04.535 A-Q1	1:58.898 A-R2	2:07.262 A-R2	+8.538 A-R2	121.9 A-Q1	26.541 A-R2	35.132 A-Q1	55.126 A-Q2
46	Protoform P4	Gavin Sweeney >115%	FV	107	2:01.197 B-R1	2:00.901	2:02.354 B-Q2	2:01.197 B-R1	2:02.073 B-R2	+0.598 B-R2	124.6 A-Q1	32.871 B-P	34.423 B-R1	53.607 B-R1
47	LYNXX	Donald Manthe >115%	FV	40	2:02.715 B-P	2:02.311	2:06.541 A-Q1	2:05.686 A-R2	2:08.709 A-R2	+3.944 A-R2	117.9 A-Q1	32.587 B-P	35.402 A-R2	54.322 B-P
48	Crusader	Blake Tatum >115%	FV	3	2:04.723 A-R1	2:04.723	2:05.855 A-Q2	2:04.723 A-R1	2:06.212 A-R2	+1.581 A-R2	122.5 A-Q1	34.149 A-R1	35.231 A-R1	55.343 A-R1
49	Mysterian M2	Ronnie Chuck >115%	FV	50, 51	2:06.510 B-R2	2:05.089	2:08.877 B-Q2	2:06.510 B-R2	2:07.002 B-R2	+1.249 B-R2	115.9 A-R2	33.255 B-R2	35.637 B-R2	56.197 B-R2

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

S1 SF → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 mi

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

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
Glamdring	FV	1	1:44.706Mark Edwards	2:05.638Mark Edwards	2:04.892Mark Edwards	128.9Mark Edwards	28.863Mark Edwards	30.228Mark Edwards	45.501Mark Edwards
Swift Db6	FF	2	1:49.259Edward Erlandson	1:55.247Johnnie Crean	1:54.993Johnnie Crean	124.5Johnnie Crean	31.358Johnnie Crean	32.841Johnnie Crean	47.766Edward Erlandson
SWIFT DB-6 Honda	FF	1	1:49.259Edward Erlandson						47.766Edward Erlandson
Swift Db6	FF	1	1:54.993Johnnie Crean	1:55.247Johnnie Crean	1:54.993Johnnie Crean	124.5Johnnie Crean	31.358Johnnie Crean	32.841Johnnie Crean	50.291Johnnie Crean
SCCA Ent SRF3	SRF3	38	1:50.233Caleb Shrader	1:50.233Caleb Shrader	1:50.825Caleb Shrader	138.9Paul Marino	30.136Caleb Shrader	31.672Caleb Shrader	44.841Tom Burt
Piper DL7-Honda	FF	1	1:51.118Eric Poulsen	1:52.044Eric Poulsen	1:51.118Eric Poulsen	114.7Eric Poulsen	30.276Eric Poulsen	31.650Eric Poulsen	48.818Eric Poulsen
Caracal C1	FV	1	1:51.773Marjorie Lundberg	2:04.579Marjorie Lundberg	2:02.255Marjorie Lundberg	122.3Marjorie Lundberg	30.462Marjorie Lundberg	32.246Marjorie Lundberg	49.106Marjorie Lundberg
SWIFT DB-	FF	1	1:53.098Edward Erlandson	1:53.098Edward Erlandson	1:54.741Edward Erlandson	133.7Edward Erlandson	30.951Edward Erlandson	32.299Edward Erlandson	49.791Edward Erlandson
DART II	FV	1	1:58.898Mace Gjerman	2:04.535Mace Gjerman	1:58.898Mace Gjerman	121.9Mace Gjerman	26.541Mace Gjerman	35.132Mace Gjerman	55.126Mace Gjerman
Protoform P4	FV	1	2:01.197Gavin Sweeney	2:02.354Gavin Sweeney	2:01.197Gavin Sweeney	124.6Gavin Sweeney	32.871Gavin Sweeney	34.423Gavin Sweeney	53.607Gavin Sweeney
LYNXX	FV	1	2:02.715Donald Manthe	2:06.541Donald Manthe	2:05.686Donald Manthe	117.9Donald Manthe	32.587Donald Manthe	35.402Donald Manthe	54.322Donald Manthe
Crusader	FV	1	2:04.723Blake Tatum	2:05.855Blake Tatum	2:04.723Blake Tatum	122.5Blake Tatum	34.149Blake Tatum	35.231Blake Tatum	55.343Blake Tatum
Mysterian M2	FV	1	2:06.510Ronnie Chuck	2:08.877Ronnie Chuck	2:06.510Ronnie Chuck	115.9Ronnie Chuck	33.255Ronnie Chuck	35.637Ronnie Chuck	56.197Ronnie Chuck

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 2024 → Cal Club 2025 2024-02-23 to 2025-02-22

2024-06-01 SRF3 SRF3 Alternator Pulley Update In

#36095 from Robey Clark · Rule change · TB 24-06 (2024-06 Fastrack)

fasterSRF3 alternator pulley minimum weight reduced from 12 oz to 11 oz.

SFR3, GCR section 9.1.8.D.2.H.17, change as follows:
"Alternator Pulley: P/N G902130, or P/N G902130A, or P/N G902131 (six row). 12 11 oz minimum weight."

2024-08-01 SRF3 Update Rain Tire Rule and Hoosier Decal Placement

#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

slowerSRF wet tires: P185/60R13 H20/W2 option removed; P185/65R13 W2 front now required with P205/60R13 W2 rear.

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Wet:
~~Front – Hoosier P/N 46100 P185/60R13 H20 or W2~~
~~Rear – Hoosier P/N 46105 P205/60R13 H20 or W2~~
~~Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used.~~
OR
Front – Hoosier P/N 46101 P185/65R13 W2
Rear – Hoosier P/N 46105 P205/60R13 W2

Show 8 more lines

1. It is forbidden to regroove tires.
2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for
violation will be the loss of qualifying times and/or the disqualification of race results.
3. Hoosier SRF/SRF3 Decal Placement:
Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to
the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the
rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including
SCCA Enterprises."

2024-09-01 SRF3 Update to Letter 36619 with new Hoosier Contingency Decal Info

#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

neutralSRF Hoosier decal requirement reduced from four decals in specific locations to three decals with simpler placement rules.

In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows:
"~~Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose~~
~~to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the~~
~~rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including~~
~~SCCA Enterprises~~ Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1)
decal must be located on each side of the car and one (1) decal must be visible on the front."

2024-10-01 FF Update to FF EGR Blanking Plate Rule

#36633 from Matt Boian · Rule change · TB 24-10 (2024-10 Fastrack)

neutralFF VTEC activation valve must function; EGR blanking plate rule clarified with Fast Forward part numbers.

In FF, GCR section 9.1.1.B.14.r.1, change as follows:
"All emission control devices must be removed and blocked off by the blanking plate provided by HPD or Fast Forward as noted
below, except for the VTEC activation valve. The VTEC activation valve must be retained; and it must be functioning. No
modifications are permitted.
a. EGR Plate: Fast Forward PN: FF200-301.
b. EGR Port Cover: Fast Forward PN: FF200-302."

2024-10-01 SRF3 Update SRF3 Air Filter Rule

#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

unclearSRF3 air filter rule removes K&N RC-9160 option, leaving only P/N WM301020 allowed.

In SRF, GCR section 9.1.8.D.2.H.23, change as follows:
"Air Filter: P/N WM301020 ~~or K&N RC-9160~~"

2024-10-01 SRF3 Update SRF Brake Rotor Thickness

#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

slowerSRF brake rotor minimum thickness increases from 12.20mm to 13.25mm, Wilwood vented rotor P/N 800065.

In SRF, GCR section 9.1.8.D.1.X.g, change as follows:
"Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 ~~shall~~ must be used as delivered with
no machining of any kind. Minimum thickness ~~12.20mm (0.481”)~~ 13.25mm (0.522”)."

2024-10-01 SRF3 Hoosier Tire Decal Placement

#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

neutralSRF3 Hoosier logo placement changes from four decals to three decals in different locations.

In SRF, GCR section 9.1.8.D.2.B, change as follows:
"Mandatory identification: "SRF3" near the side car numbers. "~~Hoosier" logo (4) on both sides front lower outer corners of the~~
~~nose and each side of the tail.~~ Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."

2024-10-01 FV Disc Brakes

#36822 from Guy Bellingham · Rule change · TB 24-10 (2024-10 Fastrack)

neutralFV ferrous rotor no longer required to be smooth; may have up to three pad cleaning grooves per side.

In FV, GCR section 9.1.1.C.4.D, change as follows:
"Any ferrous alloy, unvented rotor may be used, but must have a maximum diameter of 11.75 in. and a minimum thickness of
0.20 in. The ~~otherwise smooth~~ rotor may not be cross-drilled and may have a maximum of three pad cleaning grooves per side."

2024-11-01 FF Change FF/FC Weight with Sequential Gearbox

#36651 from Robert Wright · Rule change · TB 24-11 (2024-11 Fastrack)

fasterFF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs.

In FF, GCR section 9.1.1.B.20.A.3, change as follows:
"Cars running with a sequentially shifted gear box ~~shall~~ must add 25 10 lbs. to minimum weight."
In FC, GCR section 9.1.1.B.20.B.4, change as follows:
"Cars running with a sequentially shifted gear box ~~shall~~ must add 25 10 lbs. to minimum weight."

2024-11-01 FF Alternative Oversize Honda Fit Pistons

#37064 from Formula/Sports Racing Committee · Rule change · TB 24-11 (2024-11 Fastrack)

neutralFF Honda Fit allows Fast Forward 0.25mm oversize pistons PN FF800-110 as alternative; piston diameter spec clarified to 2.8835 inches.

In FF, GCR section 9.1.1.B.14.e.1, change as follows:
"Honda Fit OEM standard size pistons, PN: 13010-RB1-000, or Honda Fit OEM 0.25mm oversize pistons, PN: 13020-RB7-Z00, or
Fast Forward 0.25mm oversize pistons, PN: FF800-110, may be used."
In GCR section 9.1.1.B.14.e.2, change as follows:
"a. Maximum standard piston diameter, measured at a point 16mm from the bottom of the skirt: 73.240mm
(~~2.8834~~ 2.8835 inches).
b. Centerline of wrist pin to crown maximum: 26.21mm (1.032 inches).
c. Maximum overall height from skirt to crown edge: 47.80mm (1.882 inches).

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d. Minimum weight: 198.0 grams (6.984 ounces).
e. Minimum weight of piston pin: 66 grams (2.25 ounces).
f. Combined minimum weight of piston, piston pin and connecting rod: 543.5 grams (18.85 ounces).
g. Combined minimum weight of piston, wrist pin, and circlips: 267 grams (9.418 ounces).
h. Centerline of wrist pin to crown edge: 26.289mm (1.035 inches).
i. Ring groove widths:
Top ring groove: 1.003mm (0.0395 inches).
Middle ring groove: 1.016mm (0.0400 inches).
Oil ring groove: 1.981mm (0.0780 inches).
j. Ring groove distance from wrist pin center to bottom of groove:
Top ring groove: 19.63mm (0.7730 inches).
Middle ring groove: 15.29mm (0.6020 inches).
Oil ring groove: 10.91mm (0.4295 inches)."

Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21

2025-03-01 FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change

#37802 from Anthony Stefanelli · Rule change · TB 25-03 (2025-03 Fastrack)

fasterFF allows older cars with rocker arm or outboard suspension to use bias ply slicks or VFF tires instead of radials.

In FF, GCR section 9.1.1.B.10.e, change as follows:
"Formula F shall be limited to the following tires (front tires may not be used as rears):
Dries:
Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13
Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13
Wets:
Front - Hoosier Wet or W3 Radial 44421 185/60R13
Rear - Hoosier Wet or W3 Radial 44426 205/60R13

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Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at
least one chassis end may use the following tires:
Dries:
Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick
Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick
Wets:
Radial wets listed above
or
Front - Hoosier 44165 135/545-13 VFF
Rear - Hoosier 44170 165/580-13 VFF
Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias
ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."

2025-04-01 SRF3 Driver Safety & Comfort

#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)

neutralSRF drivers with disabilities may modify seat and controls for safety and comfort with approval and logbook notation.

In SRF, GCR section 9.1.8.D.1.D, add the following:
"f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These
modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the
noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard
configuration."

2025-04-01 SRF3 Update SADEV transmission specs

#37992 from Club Racing Board · Rule change · TB 25-04 (2025-04 Fastrack)

neutralSRF SADEV-SRF3 6-speed sequential transmission gear ratios wording clarified, effective 2025-04-01.

In SRF, GCR section 9.1.8.D.2.K, change as follows:
"OR
SADEV-SRF3 6-Speed Sequential ~~(beginning~~ from Oct. 4, 2021 onward):
1st 12-36 3.0000 : 1
2nd 15-31 2.0667 : 1
3rd 18-28 1.5556 : 1
4th 22-28 1.2727 : 1
5th 24-26 1.0833 : 1

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6th 25-23 0.9200 : 1
Final Drive Ratio: 15-48 3.20"

2025-05-01 FF Page 228, FF tire rule 9.1.1.10.e

#38251 from Anthony Stefanelli · Rule change · TB 25-05 (2025-05 Fastrack)

neutralFF adds rocker arm and outboard suspension cars optional bias ply and VFF tires; removes front-as-rear rule, adds mixing restrictions.

In FF, GCR section 9.1.1.B.10.e, change as follows:
"Formula F shall be limited to the following tires ~~(front tires may not be used as rears)~~:
Dries:
Front - Hoosier R60A Radial 43322 or F1600 Radial 43321 185/60R13
Rear - Hoosier R60A Radial 43327 or F1600 Radial 43326 205/60R13
Wets:
Front - Hoosier Wet or W3 Radial 44421 185/60R13
Rear - Hoosier Wet or W3 Radial 44426 205/60R13

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Alternatively, Formula F cars with rocker arm suspension (e.g., Swift DB1, 1987-90 Reynard) and/or outboard suspension on at
least one chassis end may use the following tires:
Dries:
Front - Hoosier H43130 R60A 20.0 x 6.0-13 or H43164 R60A 20.5 x 7.0-13 bias ply slick
or
Hoosier 44165 135/545-13 VFF
Rear – Hoosier H43307 R60A 22.5 x 7.2-13 bias ply slick
or
Hoosier 44170 165/580-13 VFF
Wets:
Radial wets or VFF tires listed above
or
~~Front - Hoosier 44165 135/545-13 VFF~~
~~Rear - Hoosier 44170 165/580-13 VFF~~
Front tires may not be used as rears, and tires may not be mixed, i.e., radial tires may not be mixed with bias ply slick tires, bias
ply slick tires may not be mixed with VFF tires, and radial tires may not be mixed with VFF tires."

2025-09-01 SRF3 SRF Rule Updates

#38853 from Robey Clark · Rule change · TB 25-09 (2025-09 Fastrack)

neutralSRF3 brakes restructured: Hawk Blue 801993 pads, Wilwood 800065 rotors only; adds Girling 880358, Wilwood 880357, Tilton 880360 master cylinders.

Effective 9/1/25 in SRF, GCR section 9.1.8.D.1.V.ff, add the following:
"SRF3 Oil Cooler, P/N G480503 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil
Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual."
Effective 9/1/25 in SRF, GCR section 9.1.8.D.X.g, change as follows:
"Brakes: ~~Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 must be used as delivered with no~~
~~machining of any kind. Minimum thickness 13.25mm (0.522”). The Renault Alliance solid front rotors may not be used. Rubber~~
~~caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced~~
~~with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038~~

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~~may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as~~
~~delivered with no modification of any kind; maximum of one spring per caliper.~~
1. Hawk Blue pads P/N 801993 only
2. Wilwood Vented Rotor P/N 800065 only, as delivered, with no machining of any kind. Minimum thickness 13.25mm (0.522")
3. Wilwood universal caliper Kit P/N 1180008 as delivered, caliper only P/N 800038; Wilwood knock back spring P/N 800045
may be used as delivered, with no machining of any kind, and only one spring per caliper
4. Renault caliper rubber bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185A
5. Renault caliper piston may be replaced with P/N 1196184 vented piston as delivered, with no machining of any kind
6. Girling .750" Master Cylinder P/N 880358 as delivered, with no machining of any kind
7. Wilwood .750" Master Cylinder P/N 880357 as delivered, with no machining of any kind
8. Tilton .750" Master Cylinder P/N 880360 as delivered, with no machining of any kind"

2025-10-01 SRF3 Add HD Oil Cooler

#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

neutralSRF3 adds HD Oil Cooler P/N G1148500 as alternative to standard cooler P/N G480503.

In SRF, GCR section 9.1.8.D.1.V.ff, change as follows:
"SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan
permitted for SRF. ~~HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual.~~"

2026-01-01 FF Formula F Alternative Tire Rule Proposed Clarifications

#39281 from Jay Messenger · Rule change · TB 26-01 (2026-01 Fastrack)

neutralFF clarifies alternative tire eligibility for cars homologated 1989 or earlier with rocker arm or outboard suspension on all four corners.

In FF, GCR section 9.1.1.B.10.e, change as follows:
"Alternatively, Formula F cars ~~with rocker arm suspension (e.g., 1987-90 Reynard, Swift DB1,) and/or outboard suspension on at~~
~~least one chassis end~~ homologated in 1989 or earlier with any combination of rocker arm or outboard suspension on all four
corners (e.g., 1987 – 1990 Reynard, Swift DB1) may use the following alternative tires. Note: This rule is intended to allow older
cars with the described suspension design to use the alternative tires. It is not to be exploited by modifying cars with push-rods or
pull-rods to meet the above requirements or by modifying either end of older cars to push- or pull-rod suspension to be eligible to
run the alternative tires. Cars that were homologated in 1989 or earlier with push- or pull-rod suspension on no more than two
corners may seek approval to run the alternative tire by utilizing the compliance process outlined in GCR section 8.1.4."

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