LOCO-MOW-SHUN PULLERS

Garden Tractor Pulling

Classes                  (Scroll down for ATV classes)

750 - 950 - 1150 LB. STOCK CLASSES:
1. Horsepower limits: 750 lb kids class/l2 Hp cast iron motor or 16 Hp aluminum block - 950 lb/14 Hp - 1150 lb/21 Hp. Multiple Hp. Rated engines go to highest Hp limit. (Hydrostatics may run over 2 Hp in 750/950, not to exceed 14 Hp in 750 lb/16 Hp in 950 lb classes.)
2. Stock off lawn engines or unaltered engine components. No more than 4000 RPM max. Must have stock sheet metal with no frame changes/alterations to sheet metal except for exhaust pipe cutout. Narrow frame Cub 147 modification is ok.
3. Kohlers only: 18 HP Cam, OEM and shaved heads allowed. Must run stock head gaskets. Rod machined to accept bearing insert, stock fuel pumps. Stock points or electronic ignition allowed if it came with specific model. No after market coils, pistons or connecting rod.  Wheelie bars required in all classes.
4. Must have garden tractor transaxle or garden tractor transmission and rear end.
5. Must have choke plates in carburetor and no velocity stacks. Exhaust, if not stock, must be vertical.
6. Turf tires only in kids class, 26x12xl2 inches wide max, no cutting or re-grooving.                  7. Pump gas only, no alcohol or additives.
8. Hand or foot operated dead man throttle recommended. Approved helmet required in all stock classes.



 950 LB. STOCK ALTERED CLASSES:
1. Commercial garden tractor engine, single cylinder flathead. 14 Hp. 32 cubic inch. 14 Hp. Single cylinder block at .030 clean up bore or less open RPM.
2. Stock crankshaft stroke, Piston must be flush or below top deck of block. Camshaft spec maximum lift .330 with lash, maximum valve size 1.380. Porting and polishing is legal. Engine modifications are allowed.
3. Factory cylinder head on 14 Hp only, no billet head. Steel flywheels and hand/foot operated dead-man throttle are mandatory. Exhaust pipes must be vertical. May trim sheet metal to accept exhaust pipe.
4. Garden tractor must have stock engine block, frame and sheet metal per OEM. Must be stock wheelbase. No cutting of frame and sheet metal is allowed, except only Cubs Narrow frame Cub 147 modification is ok.
5. Must have garden tractor transaxle or garden tractor transmission and rear end. Functional kill switch required.
6. Choke plate and shaft may be removed. Carburetor can be mounted with one gasket directly to intake. Kohler type naturally aspirated carburetor with one-inch venturi. Recast carburetor standoff pipes/manifold extensions not permitted. Velocity stacks are legal.
7. Tire size 26 X 12 X 12, turf or bar grip, cepek, lawn techs or pit bull tires.
8. Fuel: gas only (no alcohol or nitrous/no form of nitro methane).  Wheelie bars and functional kill switch required.
9. Approved helmet required.



1050 LB. STOCK ALTERED CLASS
1. Single cylinder four cycle flathead engines only, 36.500 cubic inch limit/no tolerance.
2. Engines must be factory productions or OEM replacement with factory deck height. Engine blocks must have OEM stock appearance. No after market blocks allowed.
3. Stock head bolt pattern, stock head gasket must fit over studs/bolts. Stock head bolt location/head bolt size.
4. Maximum crankshaft stroke 3.25 inch /0.010 inch measuring tolerance, not exceeding cubic inch limit. Maximum engine bore 3.780 inch /0.010 inch measuring tolerance, not exceeding cubic inch limit.
5. Maximum engine valve size 1.380 inch /0.001 inch measuring tolerance. Maximum engine valve lift .330 inch/0.003 inch measuring tolerance.
6. Maximum carburetor round shape venturi size 1.00 inch, no air entering after 1.00-inch restriction.  0.001-inch measuring tolerance.
7. Stock appearing Kohler type carburetor must be mounted to the engine with no more than 1-inch spacer. No reverse port engines allowed, carburetor must go to the original intake port.
8. No external welding or external modifications allowed. All thread through finned area is acceptable. Welding permitted in crankcase area of the block for repair. Billet heads, head restraint, porting and polishing allowed.
9. Must be stock garden tractor frames maintaining factory length with factory hood and grill. No cutting of frame and sheet metal is allowed, except Cubs only: Narrow frame Cub 147 modification is ok.  May trim sheet metal to accept exhaust pipe.
10. Must have garden tractor rear ends with garden tractor transaxle or garden tractor transmission and rear end.  Maximum wheelbase 56 inches.
11. Top placing tractors will be checked for, but not limited to: Fuel, bore, stroke, carburetor size,  valve lift and size and deck height. Formula for cubic inch is measured bore x measured bore x  measured stoke x .785 = cubic inch.  All bores measured 90 degrees from thrust side. Wheelie bars and functional kill switch required.                                                                                    12. Fuel: gas only (no alcohol or nitrous/no form of nitro methane).  Wheelie bars and functional kill switch required.                                                                                                        13. Tire size 26 X 12 X 12, turf or bar grip, cepek, lawn techs or pit bull tires.
14. Approved helmet required.


1050 LB. PRO/SUPER STOCK CLASSES:
1. 50.5 cubic inch, single cylinder naturally aspirated, on gas or alcohol fuel only, no nitrous. All forms of nitro methane are illegal.
2. Garden tractor or commercial reproduced block. Garden tractor appearing sheet metal. Must use aluminum or steel flywheels with safety shields.
3. Tire size 26 X 12 X 12, turf or bar grip, cepek, lawn techs or pit bull tires, no sticky tires.
4. Wheelie bars and functional kill switch required.
5. Approved helmet, fire suit if burning alcohol and functional fire extinguisher required.



1050 LB. SPORT STOCK:
                              CHASSIS RULES/FLAT HEAD ENGINES
1. One or two cylinder, flat head, air-cooled, naturally aspirated, four cycle engine - no after market blocks. Engine block, transaxle, and chassis must be OEM available in commercial garden tractor.
2. Engine components must remain in original position. Original measurement from center of crankshaft to top deck of block and stock crankshaft stroke must be maintained. Maximum total engine displacement: For single cylinder is 37.5. (Bore size is 3.825, stroke is 3.25). 2 cylinders 45 cubic inch.
3. Stock appearing carburetor per engine manufacturer. Maximum air restricting venturi limit: 1.200. Air flow must be controlled by throttle shaft actuated butterfly in stock location. No air may enter intake port after 1.200 restrictions.
4. Stock garden tractor chassis with maximum wheelbase of 56 inches required. Any chassis having a stock wheelbase of 56 inches or longer must retain stock wheelbase. Must have garden tractor transaxle or garden tractor transmission and rear end. All engine and tractor components must be shielded.
5. Billet steel or aluminum flywheel and/or start pulley required.
6. Maximum distance from center of rear axle to farthest point forward - 96 inches.
7. Tractor must have a stock appearing hood and grill/nose piece. Switching to another factory sheet metal is permissible.
8. Gasoline or alcohol fuel only. All forms of nitro methane fuels are illegal.
9. 7. Tire size 26 X 12 X 12, turf or bar grip, cepek, lawn techs or pit bull tires, no sticky tires.
10. Wheelie bars and functional kill switch required.
11. Approved helmet, fire suit if burning alcohol and functional fire extinguisher required.

                                 CHASSIS RULES/ALL OHV ENGINES
 1. One or two cylinder, naturally aspirated, cast block engine. Engine must be available in an OEM production garden tractor. Must retain stock cylinder head and valves for engine configuration and horsepower rating. Maximum cylinder bore size: .030 over manufacturer's standard specification.
2. Stock crankshaft stroke must be maintained. Piston travel must be flush or below deck of block.
3. Max total engine displacement: 38.5 cubic inches.
4. All other chassis, engine, and safety rules must be followed.



1050 AND 1200 LB. OPEN/UNLIMITED CLASSES:
1. Must be garden tractor appearing with fenders. Hood and grill optional.    Snowmobile engines must have silencers.
2. Outside size no wider than 6 foot/no longer than 8 foot including weights from center rear axle to front of tractor.
3. Any number of naturally aspirated motorcycle, snowmobile, automotive, diesel or garden tractor engines may be used.   Any diesel motor - one turbo. May use no more than 4 cylinders, 1500 cc maximum except 800 cc in the 1050 lb. class.  No snowmobile engines in the 1050 lb. class.
4. Approved fuel can be gasoline, diesel fuel, or methanol alcohol. All forms of nitro methane fuels are illegal.
5. Any type of transmission can be used. Reverse gear is not required. May use any type of carburetor.
6. Floater axles are recommended but not mandatory at this time. Fenders must cover at least top 1/3 of tire and be at least 4 inches wide. Fender must be capable of holding tire in case of axle or wheel breakage.
7. Tire size 26 X 12 X 12, turf or bar grip Professional pulling tires ok – Cepek, Pit Bull, LawnTec.  No sticky tires.
8. Wheelie bars and functional kill switch required.
9. Approved helmet, fire suit if burning alcohol and functional fire extinguisher required.



1400 LB. UNLIMITED OUTLAW:
1. Any type or multiple engines allowed.  No cubic centimeter or cubic inch limit. Garden tractor appearing sheet metal is optional.
2. Maximum length 10 foot overall, maximum width 60 inches and no more than 8 foot from center of rear axle to front of  tractor including weights.          
3. May use steel or aluminum flywheels with any type or number of carburetors. Exhaust must be straight up.
4. Fuel may be gas or alcohol, no nitrous. All forms of nitro methane are illegal.
5. Shielding: Harmonic balancers, belts and fans must be covered 360 degrees with 1/8-inch steel or ¼-inch aluminum. Use engine shields, from front to back, with 1/8-inch steel or 1/4 inch aluminum.
6. Automatic transmissions, drive shaft hoops, and clutch bell housings, Use Sema approved blanket or shielded with 1/8 inch steel or 1/4 inch aluminum.
7. Tire size:  26 X 12 X 12 any brand.           
8. Roll bars/cage .090 thick and minimum 4 strap harness required. Wheelie bars and functional kill switch required.
9. Approved helmet, fire suit if burning alcohol and functional fire extinguisher required.

NOTE:
A puller may elect to enter any class above there minimum classification. For example, a stock class puller is eligible to pull in any class above the stock classafication.  

                                 ATV Classes

          A STOCK ATV is considered to have:

 Stock tire height and width, 1" variance on stock tire width, no cut or sharp tires, no wheel spacers, no engine carburetor, exhaust etc. modifications, stock air box (replacement filter will be allowed), weights within the interior of the four tires, Maximum hitch height of 14", ATV must have stock appearance.

 

Classes

  1. Stock 200cc to 500cc 1000 lbs 4x4
  2. Stock 501cc to 700cc 1100 lbs 4x4
  3. Stock 701cc to 800cc 1200 lbs 4x4
  4. Stock 801cc to 1000cc 1300 lbs 4x4

 

 

GENERAL RULES

  • Driver must stay seated at all times
  • Driver must wear helmet
  • No sharing of weights with drives in your class
  • No more than 2 machines per driver per class
  • No more than 1 run per machine per class
  • No compressed gases
  • Officials discrimination will be used on stock classes
  • No alcohol or drug consumption by drivers or pit crew before or during the events
  • All machines must weigh before their pull and weigh at or under their limit NO VARIANCE
  • All machines must have operating brakes
  • If your machine breaks during your pull you take that pull distance
  • All machines will be inspected in line up
  • Machines must have ATV chassis and engine
  • Walking speed only, this is for everyone's safety
  • HITCHES: will be measured in a designated area with driver and weight on machine
  • Hook may not extend past rear tires or ahead of rear axle
  • Will be measured at hook point (smallest part of ball or clevis)

NON COMPLIANCE WITH ANY OF THESE RULES WILL RESULT IN DRIVER AND OR MACHINE DISQUALIFICATION. ALL OFFICIALS RULINGS ARE FINAL. NO WHINING, SNIVELING, OR CUSSING.



LOCOMOWSHUN PULLERS HAS THE RIGHT TO REFUSE ENTRY TO ANY PULLER.