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1800 and 1850 MINI ROD TRACTOR
WEIGHT CLASS FOR ONE AND FIRST HOOK PULL - 1800
WEIGHT FOR SECOND CLASS – 1850
"Class purse may include Sled Rental"
1. VEHICLE CHASSIS:
A. MAXIMUM WIDTH OF 6 FT.
B. MAXIMUM LENGTH OF 8' FROM CENTER OF REAR AXLE TO FURTHER MOST POINT FORWARD.
C. ALL POWER TO BE TRANSMITTED THROUGH THE REAR WHEELS. NO FOUR WHEEL DRIVES, DUAL TIRES, CHAINS, OR STUDS.
D. MAXIMUM TIRE SIZE 18.4" X 16.1".
E WORKING BRAKES ON THE DRIVELINE OR ON REAR WHEELS ARE MANDATORY.
F. SHIELDING:
1. DRIVELINE BRAKE COMPONENTS, IF USED, MUST BE SHIELDED 360 DEGREES WITH 5/16" STEEL OR 3/8" ALUMINUM.
2. ALL DRIVELINE COMPONENTS MUST BE SHIELDED 360 DEGREES WITH 5/16" STEEL OR 3/8" ALUMINUM, SHIELDING SHALL BE SECURELY FASTENED TO THE VEHICLE FRAME.
3. ENGINES TO HAVE SIDE SHIELDS - MINIMUM 0.060" THICK, STEEL OR ALUMINUM. SHIELDING TO BE ENTIRE LENGTH OF BLOCK FROM 2" BELOW CRANKSHAFT TO THE HEAD/BLOCK MATING POINT.
G. CHASSIS MUST HAVE WIDE FRONT AXLES WITH FRONT WHEELS TRACKING WITHIN REAR WHEELS.
H. VEHICLE MUST HAVE A FENDER BETWEEN THE DRIVER AND THE TIRES THAT CONSISTS OF A SOLID BARRIER. THE FENDER MUST BE A MINIMUM OF 1" OVER THE HEIGHT OF THE TIRES AND MUST EXTEND 4" HORIZONTALLY FROM THE INSIDE EDGE OF THE TIRE IN THE SAME CONFIGURATION AS
THE TIRE. MINIMUM LENGTH OF 18" AT THE TOP OF THE FENDER
I. DRAWBAR:
1. DRAWBAR TO BE CONSTRUCTED OF ¾ INCH SOLID STEEL - OR HOLLOW TUBING WITH MINIMUM 1/4" WALL AND A 5/16" STEEL SAFETY CABLE.
2. DRAWBAR MUST BE RIGID IN ALL DIRECTIONS.
3. POINT OF HOOK TO BE A MAXIMUM 13" HIGH FROM THE GROUND AND MUST BE HORIZONTAL – NOT VERTICAL..
4. POINT OF HOOK TO BE A MINIMUM OF 6 INCHES FROM CENTER OF REAR AXLE.
5. DRAWBAR MUST HAVE A 2" MINIMUM ROUND HOLE.
J. STABILIZER BARS:
1. STABILIZER BARS MUST HAVE PADS WHERE THEY MEET THE GROUND. PADS TO BE A MINIMUM OF 4 INCHES SQUARE.
2. PADS TO BE A MINIMUM OF ONE-HALF THE TIRE DIAMETER REARWARD FROM THE REAR AXLE CENTERLINE.
3. PADS TO BE A MAXIMUM OF 6" ABOVE THE GROUND. ONE PAD TO BE ON EACH SIDE OF VEHICLE.
4. DRAWBARS AND STABILIZER BARS MUST NOT BE CONNECTED.
5. EACH STABILIZER BAR MUST BE ABLE TO SUPPORT WEIGHT OF VEHICLE.
K. WEIGHTS MUST NOT EXTEND REARWARD BEYOND REAR MOST PART OF TIRES.
L. VEHICLE MUST BE EQUIPPED WITH A PROPERLY SECURED FACTORY-TYPE SEAT, OR FABRICATED EQUIVALENT.
M. TRACTOR MUST HAVE A DEADMAN THROTTLE OF POSITIVE MECHANICAL TYPE, WITH TWO RETURN SPRINGS. THROTTLE MUST MOVE FORWARD/DOWN TO OPEN AND REARWARD/UP TO CLOSE THE THROTTLE. ALL FOOT THROTTLES MUST HAVE A TOE STRAP.
N. VEHICLE REQUIRED TO HAVE A KILL SWITCH THAT INTERRUPTS THE IGNITION AND ELECTRIC FUEL PUMP CIRCUITS. KILL SWITCH TO BE LOCATED 18 INCHES ABOVE THE POINT OF HOOK AND WITHIN 6
INCHES OF CENTER IN ANY DIRECTION. KILL SWITCH MUST HAVE A SOLID STEEL OR ALUMINUM RING OF A MINUM 2" DIAMETER AND 1/8 INCH CROSS SECTION THICKNESS.
2. CLUTCHES, FLYWHEELS, TRANSMISSIONS
A. VEHICLES EQUIPPED WITH ANY TYPE OF CLUTCH MUST:
1. USE A BLOWPROOF BELLHOUSING HAVING NO NON-FACTORY HOLES. EXCEPTION: BELLHOUSING MAY HAVE A CLUTCH MAINTENANCE OR INSPECTION HOLE AND ONE 1" COOLING HOLE.
2. BE EQUIPPED WITH A BLOCK SAVER PLATE OF 3/16" STEEL OF 1/4" ALUMINUM
3. USE ONLY STEEL OR ALUMINUM COMPONENTS. NO CAST IRON COMPONENTS PERMITTED.
COMPONENTS DEFINED AS FLYWHEEL, PRESSURE PLATE, FLOATERS ANDCLUTCH DISC(S).
B. AUTOMATIC TRANSMISSIONS MUST HAVE A SECURLEY FASTENED SEMA OR EQUIVALENT APPROVED SAFETY BLANKET OR SAFETY SHIELD COVERING THE TRANSMISSION.
C. VEHICLE MUST HAVE POSITIVE REVERSE GEAR LOCKOUT, AND NEUTRAL SAFETY SWITCH. THE SWITCH MUST PREVENT THE ENGINE FROM STARTING IN GEAR.
D. VEHICLE MUST HAVE AN OPERATING REVERSE GEAR.
3. ENGINE:
A. INDUCTION MUST BE NATURALLY ASPIRATED - NO SUPERCHARGERS, TURBO CHARGERS, OR FUEL INJECTION ALLOWED.
B. VEHICLE ALLOWED ONE ENGINE WITH MAXIMUM OF EIGHT CYLINDERS, AND TWO VALVES PER CYLINDER. MAXIMUM DISPLACEMENT OF 500 CUBIC INCHES.
C. ENGINE MUST HAVE ONE AUTOMOTIVE-TYPE FOUR BARREL CARBURETOR.
D. ENGINES MAY NOT HAVE ALUMINUM BLOCKS.
E. ALUMINUM HEADS PERMITTED.
F. HARMONIC BALANCERS:
1. STEEL HARMONIC BALANCERS ARE RECOMMENDED.
2. FACTORY OEM TYPE UNITS, IF USED, MUST BE SHIELDED WITH 5/16" STEEL, 360 DEGREES
3. SFI APPROVED BALANCERS OR HUBS OF STEEL DO NOT REQUIRE SHIELDING.
4. A BOLT IS REQUIRED IN THE END OF THE CRANKSHAFT TO HOLD THE BALANCER OR HUB.
G. ALL EXHAUST SYSTEMS MUST DISCHARGE VERTICALLY OR WITHIN 10 DEGREES IN ANY DIRECTION OF BEING PLUMB. THE HEIGHT SHALL BE A MINIMUM OF 12'’ ABOVE THE BEND IN THE PIPE.
H. ONLY ELECTRIC ENGINE COOLING FANS ARE ALLOWED.
4. FUEL: LEGAL FUELS ARE GASOLINE, DIESEL FUEL, WATER, ALCOHOL, AND PROPANE. ALL FORMS OF NITRO-METHANE, INCLUDING NITROUS OXIDE AND PROPYLENE OXIDE ARE NOT PERMITTED.
5. PROTECTIVE/SAFETY EQUIPMENT:
A. DRIVER MUST WEAR HELMET AND FIRE SUIT.
B. VEHICLE ROLLOVER PROTECTION IS HIGHLY RECOMMENDED.
C. VEHICLE MUST BE EQUIPPED WITH A FUEL SHUTOFF.
D. VEHICLE MUST BE EQUIPPED WITH AN OPERATIONAL FIRE EXTINGUISHER.
NOTE: ALL PULLERS MUST BE REGISTERED 30 MINUTES BEFORE PULL STARTS!
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