Rules and Regulations

 Class Description: The Junior Dragster class is a class designed for half scale dragsters with a 5HP based engine. 

Designation: The class designation is JR. 

Format: This is an 1/8 mile E.T. bracket class run on a .500 full tree. This is an all run field. All cars must be 15.99 & quicker We follow both NHRA and IHRA rules. For instance, in IHRA at 12 you can run 7.90s but NHRA you have to wait until 13. We follow the less restrictive rule.

Points: This class will be a points earning class at all SDBA events (see points system for more details)

GENERAL: A driver may only run one car in this class, and that car may only be entered one time in this class.

CHANGING CARS: A racer can change his or her car in time runs, qualifying, or before 1st round (You must notify the tower of changes). The car and driver that runs first round is the one that must be used for eliminations, even if the class is completed on another weekend due to weather. 

BURNOUTS: Cars cannot be held in place or touched by a parent or crew member during the burnout. Vehicles are not permitted to burnout past the starting line.

DIAL-INS: The driver and crew are responsible for the accuracy of their dial in.

AGE LIMIT: Follows NHRA ruling Age 5 for test passes and age 6 for competition

ARM RESTRAINTS:  Mandatory

NECK COLLAR: Mandatory

PROTECTIVE CLOTHING: All Drivers are required to wear a jacket meeting SFI Spec 3.2a-1 as well as full length pants, shoes, socks, and gloves. The use of nylon or flannel pants is prohibited.

HELMET: All riders must have a SNELL 05 or higher full face helmet

DRIVETRAIN CHAIN/BELT GUARD: All cars must be equipped with a guard to cover the width and at least the top run to the centerline of the sprocket of any chains or belts. Guards must be minimum .060" steel, or . 125" aluminum, and must be securely mounted; no tie wraps. Moving engine/drivetrain parts must be protected by frame rails or steel or aluminum guards to avoid unintentional contact.

CLUTCH: All cars must be equipped with a dry centrifugal-type engine clutch. Chain or belt drive only. Axle clutches prohibited. 

FLYWHEEL: Aftermarket billet flywheel mandatory unless OEM type carburetor is used. Cast aluminum flywheel prohibited. Modification to stock units other than keyway modifications is prohibited. 

TRANSMISSION: Gear-type prohibited. Torque converter belt assembly units allowed.

BRAKES & SUSPENSION: Two-wheel hydraulic steel drum or disc brakes, or IHRA accepted mechanical brakes mandatory. Steel brake lines mandatory on 8.89 or quicker. No part of lines may run below the bottom frame rails. Drilling of brake components prohibited. Live axles may have brakes on one wheel only if a 7'' minimum go-kart disc brake is used. 

ELECTRICAL IGNITION SHUTOFF: A positive ignition shutoff switch, within easy reach of the driver, mandatory. A second shutoff switch on the center top portion of the deflector plate within easy reach of the crew or race official mandatory. All entries must have a mechanical shutoff switch to ground the spark plug located within easy reach of the driver. FC additional switches must be on the upper rear drivers side of the vehicle labeled as to function. 

TAIL LIGHT: Functional tail light mandatory. It must be visible from the rear of the car. 

ENGINE: All vehicles restricted to a maximum of one, rear-mounted, five horsepower based, four-cycle engine. Porting, polishing and relieving of block is permitted. Welding to the intake port is permitted. Machining of deck surface permitted. Adding material to the deck surface in any matter will be prohibited. All components must be completely isolated from the drivers compartment. This includes the fuel system. Accepted aftermarket engines: Metro Racing flathead, McGee Racing flathead, Tecumseh flathead, Pure Power Racing flathead, LPW Racing Products, JR Race Car flathead, Huddleston Performance flathead and R&S Machine flathead Monster Racing, SR 71 Racing, Soltz racing and M-1 machine block. 

CAMSHAFT: Any camshaft permitted. Any valve spring permitted. No overhead cams permitted. Any size valves permitted. 

CARBURETOR: Any means to pass fuel or air to the engine other than normally aspirated carburetor is prohibited. Auxiliary vacuum fuel pump allowed. Pressurized and/or fuel injection systems prohibited. Electric fuel pumps prohibited. 

CYLINDER HEAD: Aftermarket units permitted. No overhead valve head permitted. 

FUEL: Gasoline or alcohol only. Nitrous oxide and or nitromethane and/or propylene oxide prohibited in all classes. Fuel tank must be behind the driver's compartment, below the shoulder hoop of the roll cage and securely mounted within frame rails. Maximum capacity of one gallon, must have screw-on or positive locking cap. All vents must be routed downward, away from the driver and extend beyond the bottom of the fuel cell. No vented fuel caps permitted, except on Briggs & Stratton or Tecumseh stock tanks. 

IGNITION SYSTEM: Magneto or battery ignition systems permitted. Maximum one spark plug. MSD Ignition # 41510, 41500, and 42231 are the only accepted units. If the system has a low side rpm limiter it must be set to 0. Accepted coils: MSD 4291, 8232, and Master Blaster 2 and 3. Any alterations or additions to the systems are prohibited. 

OIL SYSTEM: Oil additives for the intent of producing power prohibited. 

STARTER: Pull rope or remote electric starters mandatory. Any driver activated/operated starting system prohibited. 

SUPERCHARGER-TURBO CHARGER-NITROUS OXIDE: Prohibited. 

THROTTLE: All vehicles must be equipped with a positive throttle return spring which shall close throttle when released. Throttle control must be operated manually by the driver's foot: electronics, pneumatics, hydraulics, or any other device may in no way affect operation of the throttle. Throttle stops, other than mechanical (i.e. a positive stop under throttle pedal) prohibited. Must be mounted securely (wire ties prohibited). 

FRAME BALLAST: Must be secured to frame with a minimum of one 3/8 bolt per 5 pounds. Hose clamps/ties/wraps/etc. may not be used to attach ballast to the entry. No ballast may be installed on the vehicle higher than the top of the rear tires. 

CATCH CANS: and lines must be securely fastened. 

DEFLECTOR PLATE: A deflector plate of a minimum 1/16" aluminum must be installed between roll cage and engine extending from lower frame rail to the top and width of the driver's helmet. Carbon fiber is prohibited. 

GROUND CLEARANCE: Minimum three (3) inches front of car to 12 inches behind centerline of front axle. (2) inches for the remainder of the car. 

ROLL CAGE: Mandatory five-point roll cage. Upper frame rails-minimum 1 1/8" diameter by .083. Diagonals-minimum 3/4" by .083". Uprights in the driver's compartment must be spaced by 20" or less. Must conform to standard dragster configuration as outlined elsewhere in this guide. 

SHEET METAL: Driver compartment interior must be aluminum, steel or fiberglass. 

STEERING: All components must have a positive through-bolt or welded connection. All rod ends must be of aircraft quality or better, and they must have a bolt through with lock nut or drilled and cotter keyed. Steering must also have washers on bolts to keep rod ends from pulling through. Minimum Spindle diameter is 1/2". 

WHEELBASE: Dragsters Minimum 90". Maximum 150" on the long side. Maximum 2" wheel base variations from left to right. Funny Cars 70" to 95", Roadsters 65" to 95 (2" variation maximum.) 

INTERIOR SEAT: Properly braced and supported seat constructed of aluminum or fiberglass mandatory. 

UPHOLSTERY: Optional. 

RESTARTS: After initial start-up, one chance will be given to restart the car within a reasonable time at the starter's discretion. The crew person should keep the starter close by in case it's needed. Push starting any vehicle is prohibited. 

STAGING: Once an entry reaches the front of the staging lanes for a run, it must be prepared to fire and race. In order to be a legitimate race winner, the competitor must start and self stage the vehicle under applied power. This rule also applies to single runs. All competitors will be given reasonable time to re-fire their entry, provided it is not pre-staged. The amount of reasonable time is determined by the starter. Crew members are prohibited from touching the vehicle after it is pre-staged. Crew members touching the vehicle once it is pre-staged will be disqualified. 

STAGING: "Auto Start" will be used in all classes at all SDBA events. Once both cars are pre-staged and the first car fully stages, the second car has a predetermined amount of time (7 seconds) to stage before the tree is automatically activated. This predetermined amount of time is referred to as "Time Out." If the second car fails to stage before the system "Times Out," it will be given a red light. If either car rolls deep after "Auto Start'' has been activated, the competitor accepts the deep staging and will not be pulled back. "Courtesy Staging" is mandatory at all Junior events. If a competitor unintentionally lights both bulbs before the opponent stages, the starter will pull the vehicle back and allow it to re-stage. This is considered a "pull-back" and will only be permitted one time. The starter has full control. 

DEEP STAGING: Is allowed but not guaranteed. The auto start system will be activated when both cars are pre-staged, so if you are staging deep you should do it in a timely fashion. Crew members may assist the entry in the pre-staging of the vehicle. Once the entry is pre-staged, crew members must be behind the vehicle and out of both competitors' view. Pull backs in the case of over staging are permitted one time if time permits. If the auto start system cycles during the pull back, the run will stand. THE FINAL STAGING MOTION, USING APPLIED POWER, MUST BE IN A FORWARD MOTION GOING FROM PRE-STAGE TO STAGE. 

SUPPORT GROUP COMMUNICATIONS: 2-way communication of any kind is prohibited. The use of any handheld portable device such as an MP3 player or iPod is also prohibited on race track or any time the competitor is seated in the vehicle.

COMPUTERS: Prohibited. See General Regulations for specific information. 

DELAY BOXES: Prohibited. 

DATA RECORDERS: Permitted. May be utilized to record engine RPM, cylinder head and exhaust temperature. No sensor of any type may be used on the front wheels or spindles. All data recorders and related components including switches, push buttons and wires must be located outside of the drivers compartment and isolated from the drivers view. Data recorders may only be activated by a crew member and must be done before the entry Pre Stages. The units may not display any information to the driver or remote location. A tachometer that incorporates download capabilities is classified as a data recorder. (See General Regulations: Data Recorders/Electronic Devices for specific information.) 

GAUGES: Engine and Cylinder head temperature gauges are permitted. A tachometer meeting specific guidelines is also permitted. (See General Regulations: Data Recorders/Electronic Devices for specific information.) 

STAGING DEVICES: Mechanical, hydraulic, electric or pneumatic staging systems prohibited. 

TIRES: Rear tires; 18" diameter X 7 1/2" wide minimum, measured at widest or tallest point. All front tires must have a manufacturer's maximum inflation rating. Tires may not be inflated above manufacturer's rating. All tires must be pneumatic. No solid tires. Treatment of tires in the lanes, burnout area or starting line is not permitted and tire covers must be removed prior to leaving the head of the staging area. 

WHEELS: Front wheels, five-inch diameter minimum with a minimum spindle diameter of 1/2". Front spindle must be able to retain a cotter pin, or use a nylon locking-type nut, Rear wheels, eight-inch diameter minimum. No modifications allowed to any wheels. 

TOWING: Tow vehicles in the form of golf cart, three or four-wheel support vehicle is mandatory. Full-size tow vehicles prohibited. Driving of Jr. Drag Racing vehicle through pits is only allowed if the driver is 16 years of age or older. Tow vehicle operated "ONLY" by an adult or street-licensed individual. Any time a Jr. Drag Racing vehicle is being towed, the driver must be seated in the cockpit. No passengers. The tow strap may not be attached to any point of the roll cage. It is recommended that all entries utilize a fluorescent or brightly colored flag attached to the entry any time the vehicle is being towed. Minimum height of flag is five feet. 

WARM-UPS: Any time a car is started, whether in the pits or in the staging lanes, a qualified driver must be seated in the vehicle. 

Protests: A protest in regards to these rules needs to be made immediately after cause is found. Protests are to be handled by SDBA tech and if found to be outside of the allowed rules the competitor will be removed from the race. In the event of a loss the competitor who lost due to an illegal car will be placed back into the race so long as the protest is completed before  the next round begins.