6700/7200 Hot Farm

                                       6700/7200lb Hot Farm Tractor Rules



    1.    Class open to agricultural tractors only.

    2.    Drawbar hook point is to be a minimum of 18 inches behind the center  of   the  rear   axle   and a maximum of 20 inches high.   Draw-bar is to be rigid in all  directions.  Hitching eye is to  be a minimum of  3 inches in  diameter   inside, 5 inches outside  and a minimum of ¾ inch thick.

    3.    Area 6 inches wide and 12 inches immediately above the  draw-bar must be free  of  all  obstructions.

   4.    S.F.I. approved clutch, flywheel, and pressure plate are required.

   5.    Flywheel guards must be used.  A 20  ply ballistic nylon or 20 ply Kevlar blanket, 17 inches wide and long enough to wrap around the bell housing with at least 6 inches of overlap with six 2 inch web straps with steel  Factory rings the length  of the blanket  and  secured front and rear with straps.

   6.    The chassis shall consist of the following:

        A.    The stock engine block or its replacement as listed by the manufacture.
   ( The block cannot be modified externally in any way except for normal  repairs with no more or less cylinders than original engine for that  model tractor ).

        B.    The stock transmission housing or manufacture replacement.

        C.    The stock final drive housing or manufacture replacement.

        D.    No aluminum external replacement of engine parts, clutch  housing, transmission case, rear end housing, or rear axle housing.

        E.     May use a one piece hood.  Must consist of stock components for  model tractor being used with no adding to the length of the hood.

       F.   Tractors with external bull gear housing must be in original straight up and down position with no change of  original rear wheel  base.
.

   7.    All tractors must have stock appearing wide front end.

   8.    Tractor length of 13 feet maximum from center of rear wheels to the farthest point  forward including weights.

   9.    Tire size limit is 24.5 x 32.  Agricultural farm tires only.  No chains, duals or 4   wheel drives allowed.  No radials.  Tires can only be cut on the top and the leading  edge of the original cleat.  No adding or deleting of the cleat.  No cut and a half.  No double cuts.  No V cuts.  Aluminum rims are allowed.

   10.    Side shields are mandatory and should be .060 thick of steel or alum. And securely     fastened to the tractor.  It is recommended that a quick release fastener be used  (wing nut or hitch pin in case of emergency).  Shields should cover from the top of  the frame to the bottom of the hood and be as long as the engine.

   11.    All tractors must have fenders or a shield between the driver and rear tires to act as   a solid barrier.

   12.    Tractors must have a strong and rigid seat with seat belts anchored to something other than the seat itself.

   13.    Stabilizer bars (wheelie bars) are required.  The drawbar assembly must in no way, be attached to the stabilizer bars.  Stabilizer bars will extend a min. of 32 inches  behind the center of the rear axle.  Pads must be a minimum of 5 inches square  with a minimum of 10 inches off the ground.  A minimum of 20 inches should be between the pads from outside to outside.  Bars must be able to support the weight of the tractor when jacked.

   14.    A 2.5 lb fire extinguisher, preferably halon, must be accessible to the operator.

   15.    SFI approved helmet and fire suits are required.

   16.    A roll cage or ROPS system are required.
 
    ----”EFFECTIVE 2014---- YOU MUST HAVE A ROLL CAGE and           NO    ROPS SYSTEMS!!

   17.    No aluminum engine heads.

   18.    Maximum cubic inch limit for the 6700 lb class is 360 with 2% allowance.  One turbo charger only  with journal bearings (Bushing Type).  No ball bearing chargers allowed.  Turbo maximum diameter of 3 inches on the intake side. No slots or enhancement ring.  
             No other type of forced induction allowed.

   19.    Tractors must have 200 lbs of moveable suitcase weights.

   20.    P injection pumps are allowed.

   21.    Must use stock fuel for make and model of tractor. Either, oxygen, alcohol, nitrous oxide, or nitro methane are all illegal fuels for primary or secondary use.

   22.    Water injection systems shall use water or a mix of water and lubricant only.

   23.    Turbocharger must be under hood.  Turbo must be shrouded 360 degrees around  with .060 thick steel or heavier if under a factory fiberglass hood.

   24.    Exhaust pipes must have an two, 3/8 inch, grade 5 bolts within one inch and 90     degrees of each other in the vertical part of the exhaust pipe.

   25.    Tractors must have an automatic ignition kill switch and air shutoff in working     order at all times.  On a spark ignition engine the switch must break or ground the   ignition and shut off electric fuel pumps.  On diesel engines the air shutoff must   have a spring loaded mechanism deemed acceptable to prevent building boost.

   26.    The kill switch hook up will be located at the rear of the tractor a max. of 6 inches   off center and approx. 48 inches above the hook point.  A 2 inch ring should be  used to hook the sled cable into.

   27.    All tractors must have a dead man throttle which returns to idle position when     released. 

   28.    Tractors must have a bulkhead shield between the driver and the engine from the     top of the hood to the top of the torque tube, transmission housing, or clutch     housing, and as wide as the side shields in case of flash fire.
  29.    Tractors must have an electric cooling fan.  Stock steel fans driven by a belt are not     allowed.

   30.    A .060 thick shield must run between the frame rails and under the harmonic     balancer to prevent the loss of the balancer from the tractor.

   31.    Modified intake and exhaust manifolds are not permitted.

   32.    Must have adapter for P and G pump at all times. Not having this adapter will be     considered as cheating and banned from the track.

   33.    Tractor’s name and model must be readable from the announcer’s  stand

   34.    Track official has the last say over these RULES.