These following rules are written in black and white. There are no gray areas written in these rules. If the rule does not say you can, then you cannot.
ATTENTION: IT WILL BE THE SOLE RESPONSIBILITY OF EACH DRIVER TO INSURE COMPLIANCE WITH ALL BRAZOS MINI-SPRINT ASSOCIATION RULES, REGARDING ENGINES, CHASSIS, AND SAFETY EQUIPMENT ETC…
SAFETY RULES AND REGULATIONS
1. Nomex fire suits are mandatory, as well as, Nomex gloves, racing shoes, neck braces, and arm restraints. Arm restraints shall be adjusted to keep driver's hands below the top of the roll cage. All equipment MUST be worn whenever the car is on the track.
2. All helmets must be S/A 2000 rated or newer. If the helmet does not have a Nomex lining then a Nomex sock must be worn. Helmets must be full face with an unbreakable shield. No class M series helmets allowed.
3. Safety belts must be 5 point harness with metal latches only. Seat belts must be securely attached to the chassis, no more than 3 years old, and used at all times.
4. It is mandatory to install a cross brace behind the seat, at the shoulder height, to support the shoulder harness.
5. All cars must have 2 fuel valves, a manual shut-off and a rollover valve.
6. Head rest or Head net is mandatory on the right side.
7. Chain guards will be installed on all cars where chains are exposed to the driver and/or other participants. The chain guard, using a minimum of .090" aluminum material or equivalent, will run on top of the chain from the front of the drivers opening to extend at least to the rear of the drivers seat. The guard must be installed in such a manner that the driver cannot touch the chain and/or sprockets while sitting in the cockpit.
8. Any car equipped with a shifting mechanism should have this device mounted in the driver's compartment unless shielded for driver protection. Shift levers may be mounted outside the driver's compartment on the opposite side of the car from the chain drive (unless the car has an inboard chain). All mechanically operated devices must be mounted below the driver's shoulders.
9. All wet cell batteries mounted in the cockpit must be covered and vented outside the cockpit area.
10. Any car may be disqualified for any infractions of safety regulations and specifications.
CHASSIS AND MOTOR SPECIFICATIONS
1. Stock means as the motor was received from the factory, in the motorcycle, and must be in production (not manufactured) for at least three (3) years. An allowance will be made for proper installation in the car chassis. (Exception R-1 in Restrictor Addendum).
2. Any after-market air cleaner will be allowed because the factory air box will not fit in some chassis.
3. Any after-market exhaust will be allowed for the same reason, but it must be equipped with a muffler, and kept silent.
4. All injected engines must run pump gas from a public gas station, with no additives allowed. The use of alcohol on injected motors is prohibited. Injected motors must have stock throttle bodies and number of injectors.
5. Fuel injected engines must remain injected and carbureted engines must remain carbureted. (Exception R-2 in Restrictor Addendum).
6. Carburetors will be allowed to run max 108-octane fuel (racing fuel) or alcohol, with no additives. Carbs must be the same brand and type as original equipment, modified for alcohol use, no flat sides.
7. Aftermarket ignition (CDI's) will not be allowed, even factory hot boxes, programmable ignition systems are not allowed. CDI's must be unaltered and be of original equipment for year, make, and model on engine being used. If numbers are wiped off the CDI it will be considered illegal. Aftermarket timing devices are illegal.
8. The engine must have stock rods, pistons, crankshaft, clutch, and cams. No ported heads, lightened cranks, lightened pistons. No head milling allowed.
9. All 600cc sport bike motors shall be manufactured by Yamaha, Honda, Kawasaki, or Suzuki.
10. Engine displacement shall not exceed 600cc.
11. O.E.M. charging system must remain in the motor and be functional.
12. All cars must be equipped with cockpit operated electrical starter and an on-board battery capable of starting a 600cc multi-cylinder engine. On and off switch must be on the dash, top of cowl, or on the steering wheel. Switch must be connected and functional.
13. Cars must have an operational manual lever clutch.
14. The car must remain chain driven off original counter shaft.
15. Wheelbase is from the center front axle to the center of the rear axle. With a maximum of 70" and a minimum of 50"
16. The width is a maximum of 48" and a minimum of 32" from center of tires; 50" on 1/4 mile or larger tracks.
17. Tires will be Hoosier or American Racer brand tires with a minimum durometer of 50 on the right rear. The right rear must have a compound no less than D35 for Hoosier and MD57 for American Racer. The left rear D20, both front tires must be at least a D15 for Hoosier and SD44 for American Racer.
18. Wheels will not exceed 10" diameter or 12" in width. The only wheel allowed to be 12" is the right rear all other wheels must be 10" or less in width. Wheels may be made of steel, carbon fiber, or aluminum.
19. No cockpit adjustable devices for suspension, brake, or wings. Devices shall not be adjusted during a racing event.
20. Minimum weight of car and driver will not be less than 750lbs. Car weight will be determined, with driver, as the cars come off the track, the way they finished the race.
21. Any material used for the purpose of adding to a car's total weight must be firmly attached as part of the car's structure. No liquid or lose ballast, i.e.: water, fuel, oil, sand bags, rocks, and/or log chains etc., allowed. Any added weight shall be painted white.
22. Cars must be equipped with a roll cage. The roll cage shall have gussets at the intersecting bars to the upright. Roll cage must be a minimum of 3" and a maximum of 6" above the driver’s helmet.
23. Roll cages shall be at least;
A) 1 inch .095 wall thickness
B) 1 1/8 inch .065 wall thickness
C) 1 1/4 inch .065 wall thickness
24. Roll cages shall be made of chromoly steel or equivalent in strength with a 1/8" inspection hole drilled in it for the measurement of the material used. The front section of the cage must be no further back than the steering wheel. Roll cage must have sufficient fore and aft bracing. Bracing must have at least 3" radius. No square or pointed corners permitted.
25. Fabrication of critical parts must be welded. Critical parts are identified as follows:
A) Frame
B) Running gear attached brackets
C) Cowl frames
D) Back rest and fuel tank mount
E) Front axle
F) Steering mechanism
G) Engine and exhaust mounts
26. Cars must have bumpers extending beyond the front and rear tires. Nothing may extend beyond a tangent line from the outside edge of the tires to the bumpers. Nothing may extend behind the outside edge of the tires or wheels, whichever is the widest point. No sharp corners or design so as to hook or damage.
27. There will be no plastic mudguards, side panels, tops, or body encasements allowed.
28. No rear view mirrors, nor any item positioned in such a way that it can be used as a rear viewing device.
29. All cars must have complete bodies i.e.: hood, and tail pieces must be in place during competition.
30. There must be a metal firewall between driver and engine compartment. The minimum specifications are steel (24 gauge) or aluminum (.0624 thickness)
31. All cars must have legible numbers in color contrasting to the background on both sides of the top wing, rear tail piece, and on the nose wing. Minimum height of the numbers on the nose is 8". Minimum height on the tails and wings are 10". Car numbers are to be separated from advertising so that they will stand out and are readable.
32. Top wing may be no more than 12’ square and a maximum of a 48" side panel. No mechanical or electrical adjustment devices allowed from cockpit or during any event. Top wings are mandatory to enter a night’s event, but may finish without one if no replacement is available.
33. Nose wings are allowed and cannot exceed 18” x 24” and must carry car number as described above in #30.
34. No radio communication is allowed in the car or on the driver. |