2009

BLACK HILLS MINI SPRINT TOUR RULES

NOTICE: IN ADDITION ALL TRACKS RULES APPLY AT TRACKS RACED.

SPECIFIC RULES

1. Age-Drivers age 16 and up may compete in the class.

2. Roll Cage- Roll cages shall be at least one (1) inch with .062-inch thickness, or 1-1/8 inch thickness. Roll cage will be made of chromyl steel or equivalent material. The front section of the cage shall be no further back than the front edge of the steering wheel. Roll cage shall have sufficient fore and aft bracing and strength to support the weight of the car and driver in case of an upset. It is recommended that the cage have gussets at the intersecting bars to the uprights. Bends must have at least 3-inch radius. No square or pointed corners allowed. No square tubing cages allowed. Roll cage must be a minimum of three (3) inches above the driver’s helmet. It is mandatory to install a cross brace behind the seat to support the shoulder harness. You must incorporate a side bar at least one (1) inch diameter to protect driver’s arm.

3. Bumpers and Nerfs- Cars must have a bumper 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 beyond the outside edge of the tires or wheels, whichever is the widest. No sharp corners or design as to hook or damage. All cars must be equipped with nerf bars. Nerf bars must extend to the inside edge of the tires, but not beyond the outside of the tire.

4. Safety- Seat belts must be securely attached to the car and used at all times. Metal to metal latches only. Five point seat belts, shoulder harness, and sub belt are required. Belt dates must not be over three (3) years old. Arm restraints are mandatory and must be adequately adjusted as to keep driver’s hand below the top of the roll cage. Neck braces and banner nets are mandatory. Helmets must be full head coverage, competition type, and one the three latest approvals. No motocross type helmets allowed. All drivers will wear a flame retardant suit. Flame retardant racing gloves required, BHMST strongly suggests the use of fireproof underwear, socks, and shoes.

5. Electrics and Electronics- On and off switches must be mounted on dash with a fluorescent orange or red ring painted around it. Kill switch must be connected and functional. No radio communication is allowed in the car or with the driver. All coils and ignition boxes must be mounted on the top portion of the front end. Components must be readily accessible by removing only the hood. IF BHMST OFFICIALS CANNOT CHECK THESE ITEMS WITHOUT HAVING TO REMOVE PANELS, THEY WILL BE DEEMED ILLEGAL!

6. Battery- All wet cell batteries mounted in the cockpit must be covered and vented outside the cockpit area.

7. Fuel- 600cc powered cars may run only BHMST approved fuels. NO ADDITIVES OF ANY KIND ALLOWED.

8. Weight- Single Cylinder 600cc powered cars, 1998 and older engines minimum car and driver weight 750 pounds 1999-2003 engines minimum car and driver weight 785 pounds.

9. Brakes- Brakes will be of sufficient strength so as to slide the wheels while the car is in motion.

10. Shocks- Any shock absorber legal, except no cockpit adjustable shocks on multi-cylinder cars.

11. Suspension- Tread- minimum 48 inches, minimum 32 inches as measured center to center of the tires. Maximum wheelbase shall be 70 inches, minimum wheelbase shall be 50 inches, as measured from the center of the front axle to the center of the rear axle. Steering- front wheels must be connected by a solid or tubular tie rod. Rear wheel drive only. All suspension bolts except wheel nuts must be secured by some type of locking device. Splined or keyed axles are allowable.

12. Tires and Wheels- All Cars- Any wheel size and tired combination may be used, but tires may not exceed 22-1/2 inches in height. Wheels must be held on with four (4) or more studs or knock off hubs. 4 cylinder 600cc cars only- siping, grooving, and cutting allowed. 1998 and older engines required to run a D25 Hoosier Right rear tire and an open Left rear. 1999 – 2003 engines run a D35 Right Rear tire and a D25 Left Rear Tire ( the only exception to the D25 left rear will be the 64 / 10 tire as it is not yet manufactured in a D25 compound. When it becomes available in a D25 Compound it will be mandatory)

13. Bodies- All cars must have complete bodies. Tall sections must be in place for all races. Recommended metal firewall between driver and engine, made of 24 guage steel or .0625 inch thick aluminum. Body must be made of aluminum, metal, fiberglass, or high impact plastic. All cars must be painted an attractive color(s). No mirrors of any kind allowed. The only part of the car allowed to be dismantled for the driver to enter or exit is a quick release steering wheel hub. Mud guards must be made of aluminum or fiberglass and can be no less than 16 inches from top of cage. All mechanically operated devices (i.e. shifter) must be mounted below the driver’s shoulders for safety. NO IN-COCKPIT ADJUSTMENT DEVICES WILL BE ALLOWED IN THE COCKPIT AREA!! All fuels tanks must be equipped with a one-way check valve to prevent spillage of fuel in the case of a rollover. Chain guards mandatory.

14. Transmissions- Four cylinder engines must have transmission with all stock working gears in working order. Any car with a shifting mechanism must have this device mounted in the cockpit area. Shift levers may be mounted on opposite side from chain drive. Chain guards will be made of .090-inch thick aluminum or equivalent and will run on top of chain from the front of the front sprocket to the center of the rear axle. Driver must not be able to touch the chain or sprocket while sitting in the cockpit.

15. Wings- All cars- Twelve (12) foot square wing with right side board maximum 48 inches by inches. All wings must have 1/16-inch radius edges or edging. No raw edges. No wood except for ribs or spars inside the center section. Wings cannot be 4-inches below top of roll cage. Nose wings cannot exceed 9-inches by 21-inches and must carry car number. Top wings are mandatory to start a race. No cockpit adjustable wings of any kind allowed. No split or multi-staged nose or top wings allowed on BHMST cars. Wing center section must be one piece.

16. Numbers- All cars must have legible numbers painted in CONTRASTING COLORS on both sides of the car and top wing. Minimum height of numbers on nose wing and nose is 8-inches. Numbers on top wing will extend from the top of the side board to the bottom of the side board. Numbers must be separated from advertising so that they will be readable. No gold or silver leaf prismatic numbers will be allowed on the cars. Must have a 12-inch number on top of wing facing the front of the car.

17. Ballast- Any material used for ballast must be firmly attached as a part of the car’s structure. No liquid or loose ballast such as water, fuel, oil, sand bags, rocks, log chains, etc. allowed. All weights must be painted white with the car number painted on it.

18. ENGINES

A. 4 cycle single cylinder engines, not exceeding 600cc are allowed:

.080 overbore, any modification will be allowed.

B. 4 cycle multi cylinder engines 600cc, 1998 and older will be:

Stock engines as run on the motorcycle, including;

Modified stock OEM carburetors that match the engine year and model. Metering rods, jets, and springs may be changed to tune the fuel curve. Any air intake box and air filter may be used. Any exhaust may be used.

Stock Heads with any valve with correct OEM specifications, with stock springs

and spring retainers. Cams and cam gears will remain stock with no redrilled,

slotted or altered gears allowed .Porting or polishing of the head is allowed.

Head may be milled for clean up. No milling of engine block is allowed and stock OEM deck clearance must be maintained.

Stock internal charging systems will be operational, Timing advancers are allowed. No lightened rotating parts or after market components.

Stock pistons, stock bore and stroke with first over bore allowed. (.25mm - .010)

No fuel injection of any kind will be allowed.

 Fuel will be BHMST approved gasoline only.

Stock CDI’s only, HRC allowed, No after-market CDI’s, such as Vance and Hines, etc.

1998 and older engine, model cars will be allowed to run 750# and a D25 right rear tire. Left rear tire will be open.

C. 4 cycle multi cylinder engines 600cc, 1999 thru 2003

Stock engines as run on the motorcycle, including;

Carburetors will be stock OEM that match the engine year and model, or most recent OEM Year and model carburetors. Metering rods, jets, and springs may be changed to tune the fuel curve. Any air intake box and air filter may be used. Any exhaust may be used.

Stock Heads with any valve with correct OEM specification, with stock springs

and spring retainers. Cams and cam gears will remain stock with no redrilled,

slotted or altered gears allowed. No porting or polishing of the head is allowed.

No milling of the cylinder head or engine block is allowed and stock OEM deck

clearance must be maintained.

Stock internal charging systems, operational, with no timing advancers,

Lightened rotating parts or after market components.

Stock pistons, stock crankshaft with stock bore and stroke. No fuel injection of any kind will be allowed. Fuel will be BHMST approved gasoline only.

Stock CDI’s only. No after market or altered CDI’s allowed

Cars with the newer motors will weigh 785 pounds and run a D35 right rear tire and a D25 left rear tire. (The only exception to the D25 left rear tire will be the 64 /10 tire as is not yet manufactured in a D25 compound. When it becomes available in a D25 compound it will become mandatory.

Any added weight must be securely bolted in, frame rail to frame rail and between axles.

Any sprocket (520 or 530) will be allowed. Engines and components will be randomly checked at the track.

2009 BHMST TECH REVISION 1. TECH A HEAD IT WILL COST $350.00 (CASH ONLY) 2. TECH MOTOR IT WILL COST $ 650.00 (CASH ONLY) 3. MOTOR WILL BE SURRENDERED AT TRACK TO BHMST TECH DIRECTOR OR DIVER WILL BE ASSUMED ILLEGAL AND POINTS REVOKED. 4. ANY UNSPORTSMAN LIKE CONDUCT, DURING THE ENTIRE INSPECTION PERIOD, WILL BE DEALT WITH AS PER BHMST BY-LAWS. 5. THE PHYSICAL TEAR DOWN WILL HAPPEN ON MONDAY FOLLOWING RACE BY A CERTIFIED MOTORCYCLE MECHANIC PREARRANGED BY BHMST TECH DIRECTOR. ALL RESULTS OF TECH INSPECTION WILL BE REVIEWED BY BHMST TECH DIRECTOR, PRESIDENT, AND ONLY THE IMMEDIATE DRIVERS INVOLVED. 6. IF FOUND ILLEGAL TEAR DOWN WILL STOP AND MOTOR WILL BE RETURNED. ALL MONEY, MINUS SHOP EXPENSES, WILL BE RETURNED TO PROTESTER. 7. IF MOTOR IS FOUND LEGAL IT WILL BE REASSEMBLED WITH NEW OEM HEAD GASKET AND RETURNED BY WEDNESDAY.

8. BHMST RESERVES THE RIGHT TO REFUSE ANY CLAIM AND/OR PROTEST IF IT IS FELT THE CLAIM IS UNDER A RETALIATORY OR MALICIOUS CONDITION.

19. Rules infractions- If any competitor is found to have illegal parts or non functional components at any time, they will lose all money won that night and all track points previously accumulated. BHMST is very serious about keeping the field even and will do everything possible to keep it that way.

20. 2 cycle engines up to 600 out of bike single or dual cylinder.

21. Out of town cars up to 750 cc stock, must run and bring a copy of their rules.

22. All 2 cycle engines and out of town cars will be evaluated by BHMST TECH DIR. After one race the car and rules will be reviewed to make sure competitive balance is kept within the BHMST.

RULES, COMPONENTS, OR PROCEDURES SPECIFICALLY NOT MENTIONED AS BEING ALLOWED ARE ILLEGAL UNLESS APPROVED AHEAD OF TIME BY THE BLACK HILLS MINI SPRINT TOUR TECHINAL DIRECTOR AND RACE DIRECTOR.