Pulling Rules v8.0

These rules are for refrence and the printed rulebook applies in case of errors.
It may be downloaded here.

Click image for class pictures.
Click class name for detailed rules.

Digger
Weight	Motor Level	Drive	Length	Battery	Surface
3 lbs	Stock	2WD	Stock	6 Cell	Dirt

Motor:: Maximum of one Stock motor.
Battery:: 6 cell "C" size maximum, ½ sub "C" minimum
Chassis:: Must be in stock configuration. Parts may be missing. Holes may be drilled for mounts only. All unused non-factory holes must be filled with epoxy so as to maintain factory weight. Aluminum hubs are allowed.
Tires:: Rear tires are to be a maximum 3 ½" diameter, and a maximum of 2" wide. Front tires are to be a maximum of 2 ½", the stock tire size. The minimum front tire size is 1 3/8"
Weight:: Maximum weight is 3 lbs.
Dimensions:: Maximum vehicle width is 9 inches.
Wheelbase:: Wheel base is 8 inches and stock for this vehicle.
Hitch:: Hitch is the wheelie bar. Rollers may be added for horizontal adjustment. The aluminum bar may be replaced with a plastic bar.
Body:: Factory replacement body or any 1/12 scale body. The body is to be the furthest item forward.
Other:: The spur gear shall be no larger than a 64 tooth 32 pitch. The pinion gear shall be no smaller than a 6 tooth 32 pitch.

Dirt Garden Tractor
Weight	Motor Level	Drive	Length	Battery	Surface
4 lbs	Modified*	2WD	12"	6 Cell	Dirt

Motor:: Maximum of one Modified motor
Battery:: 7.4 nominal maximum.
Chassis:: May be factory production or scratch built.
Tires:: Maximum rear tire diameter is 4 inches. Maximum rear tire width is 2 ¾ inches. Minimum front tire diameter of 1 inch. Rear tires must have "V" bar tread pattern. TLT tires are acceptable.
Weight:: 4 lbs maximum.
Dimensions:: Maximum vehicle length of 12 inches. Length is measured from the rearmost part of the hitch to the furthest point forward.
Wheelbase:: Maximum of 9 inches.
Hitch:: Maximum hitch height of 4 inches.
Body:: Will have the appearance of a scale stock or modified garden tractor.
Wheelie Bar:: Vehicle may have wheelie bars. The wheelie bars may not extend more than 2 inches past the rearmost portion of the hitch. Wheels may be replaced with skid pads.
Other:: A maximum of one gear drop. This is the drop from the motor pinion to the rear axle spur gear.

2WD Box Stock
Weight	Motor Level	Drive	Length	Battery	Surface
6 lbs	Stock	2WD	19"	6 Cell	Dirt

Motor:: Maximum of one Stock motor
Battery:: 6 cell “C” size maximum, ½ sub “C” minimum. Battery must be in stock location
Chassis:: Any factory production 2WD R/C vehicle is allowed (factory production R/C pulling vehicles are not permit ted) No pinion gear or other gear changes allowed. No additional gears or gearboxes are permitted. No modification of gear cases are permitted. Bearings are allowed (vehicle only) Suspension must remain original for that vehicle and cannot be locked. Differentials must be original for that vehicle and can not be locked. No “aftermarket differentials” will be permitted.
Tires:: Tires must be original size for that vehicle. Any tread type will be permitted. Tires may not be cut. Dual wheels are not permitted. Tire chains, added spikes, pins, etc. are not permitted.
Body:: Any scale appearing body is allowed.
Weight:: Maximum vehicle weight is 6 lbs. All counterweights must be under body.
Hitch:: 2 inch Maximum hitch height. The hitch must be mounted i n such a way as not to permit any movement. Adjustable hitches are allowed but must be locked when pulling
Dimensions:: Maximum vehicle length of 19 inches. Maximum vehicle width is 13 inches. Dimensions include all parts, body hitch, etc. of the pulling vehicle. Length and width must be stock for that vehicle.

2WD Truck
Weight	Motor Level	Drive	Length	Battery	Surface
7 lbs	Modified	2WD	19"	See Rules	Carpet

Motor:: Maximum of one Modified motor.
Battery:: Brushed motor = 8.4 nominal max voltage
Brushless motor =7.4 nominal max voltage
Chassis:: May be scratch built or a combination of kit components. May be built with any of the following: Steel, aluminum, fiberglass, or plastic.
Tires:: Rear tires are to be Tamiya "Wild Willies, Lunchbox, or Midnight Pumpkin" type tires only. Front tires are to be a minimum of 2 ¼" in diameter.
Weight:: Maximum vehicle weight is 7 lbs.
Dimensions:: Maximum length is 19 inches. Maximum width is 9 inches. The furthest point forward from the centerline of rear axle shall be no further than 15 inches.
Wheelbase:: Maximum wheelbase of 11 ½ inches.
Hitch:: 2 inch maximum hitch height.
Body:: Must use a truck, van or car body only. All components must be under the body. Front tires must be in wheel opening.

Pro Stock Tractor
Weight	Motor Level	Drive	Length	Battery	Surface
10 lbs	Modified	2WD	19"	See Rules	Dirt or Carpet

Motor:: Maximum of one Modified motor.
Battery:: Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.
Battery shall be placed in a fashion so that it can not be seen from either side, front, rear or top of the tractor.
Chassis:: Chassis may be scratch built or combination of kit components.
Tires:: Rear tires are to be a maximum of 6 ½ inches. The Maximum tread width is 4 ½ inches. Must be agricultural single "V" type bar tire. Stock E-Maxx tires are allowed. Tires are allowed to be cut for dirt pulling only.
Weight:: Maximum tractor weight is 10 lbs. Any visible weight must be scale suitcase weights. These weights are allowed to stick out past the body within the maximum tractor width.
Dimensions:: Maximum over all length is 19 inches. Maximum tractor width is 14 inches. Maximum tractor length is 18 ¾ inches. The wheelie bars may be ¼ inch past the rearmost part of the tractor. The furthest point forward shall be no further than 15 ½ inches from the center of rear axle.
Wheelbase:: Maximum wheelbase is 11 ½ inches.
Hitch:: Maximum hitch height of 2 inches.
Body:: Must be a 1/10 scale Pro-stock or Super-stock Farm tractor body. Any make, model and year are allowed. Tractor may be built to resemble a four wheel drive tractor but must remain two wheel drive. Tractor must have fenders of some type. It is suggested, not required that the tractor should smoke, have a driver and a transmission blanket for realism.
Front axle:: Front axle may be tricycle type with single or double tires. Front axle may also be a solid or pivoting type axle. Other: Wheelie bars are suggested but not required. If wheelie bars are used, the wheels maybe removed and/or replaced with skid pads.
Other:: Wheelie bars are suggested but not required. If wheelie bars are used, the wheels maybe removed and/or replaced with skid pads.

Bar Tire Sportsman
Weight	Motor Level	Drive	Length	Battery	Surface
10 lbs	Econo Mod	2WD	24"	See Rules	Dirt or Carpet

Motor:: Maximum of one Modified motor.
Battery:: Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.
Chassis:: May be scratch built or a combination of kit components. May be built with any of the following; Steel, aluminum, fiberglass, or plastic.
Tires:: Rear tires are to be a maximum diameter of 6 ½ inches with a minimum diameter of 3 inches. The maximum width for the rear tires is 4 ½ inches. Rubber bar agricultural tires only. Tires may be cut.
Weight:: Maximum vehicle weight is 10 lbs.
Dimensions:: Maximum vehicle length is 24 inches. Maximum vehicle width for vehicles competing on dirt is 16 inches. The maximum vehicle width for vehicles competing on carpet is 14 inches.
Hitch:: Maximum hitch height is 4 inches for dirt vehicles and 2 inches for carpet vehicles.

Pro Modified Electric
Weight	Motor Level	Drive	Length	Battery	Surface
10 lbs	Modified	2WD	19"*	11.1V	Dirt

Motor:: Maximum of one Modified Motor.
Battery:: 11.1 nominal voltage maximum
Chassis:: Chassis may be scratch built or combination of kit components.
Tires:: Maximum rear tire diameter is 5 ½ inches. Maximum rear tire width is 3 ¼ inches. Minimum front tire diameter is 2 inches.
Weight:: Maximum vehicle weight is 10 lbs.
Dimensions:: Maximum vehicle length is 19 inches. This is to be measured from the rearmost portion of the hitch to the most forward part of the vehicle.
Wheelbase:: Maximum wheelbase is 11 ½ inches.
Hitch:: Maximum hitch height is 4 inches.
Body:: Must use a truck, van or car body only.

2WD Open I
Weight	Motor Level	Drive	Length	Battery	Surface
12/15 lbs	Modified	2WD	24"	16.8V	Dirt or Carpet

Motor:: Maximum of one Modified motor.
Battery:: 16.8 nominal voltage maximum.
Chassis:: May be scratch built or a combination of kit components.
Tires:: Maximum rear tire diameter is 6 ½ inches. Minimum rear tire diameter is 2 ¾ inches. Maximum rear tire width is 4 ½ inches.
Weight:: Maximum vehicle weight is 12 lbs for carpet vehicles and 15 lbs for dirt vehicles.
Dimensions:: Maximum vehicle length is 24 inches. Maximum vehicle width is 14 inches for carpet vehicles and 16 inches for dirt vehicles.
Hitch:: Maximum hitch height of 4 inches.

2WD Open II
Weight	Motor Level	Drive	Length	Battery	Surface
20 lbs	Open II	2WD	28"	28 Cells	Carpet

Motor:: Maximum of 6 Open II motors.
Battery:: Maximum of 28 "D" size cells.
Chassis:: May be scratch built or any combination of kit components.
Tires:: Maximum rear tire diameter of 6 1/2 inches. Minimum rear tire diameter is 3 inches. Maximum rear tire width is 4 ½ inches.
Weight:: Maximum vehicle weight is 20 lbs.
Dimensions:: Maximum vehicle length is 28 inches. Maximum vehicle width is 16 inches.
Hitch:: Maximum hitch height of 4 inches.

Dirt Big Rig
Weight	Motor Level	Drive	Length	Battery	Surface
7 lbs	Modified	Tandem	20"	See Below	Dirt

Motor:

Limit of one Modified motor.

Battery:

Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.

Chassis:

May be scratch built or a combination of kit components. May be built with any of the following: Steel, aluminum, fiberglass, or plastic.

Tires:

Printed Rulebook:
All tires must be 1/10th scale. All four drive tires must be of the same size. Maximum tire width is 2 inches.

Online Revision:
Maximum tire diameter is 4 inches. Maximum tire width is 3 inches. Dual tires are allowed.

Note:
The online revision is what shall be enforced as per the 2010 ballot.

Weight:

Maximum vehicle weight is 7 lbs.

Dimensions:

Maximum vehicle length is 20 inches. Maximum vehicle width is 11 inches.

Wheelbase:

No limit on the overall wheelbase except within the vehicle dimensions and body limitations. The rear axles are to be 4 ½ inches apart, center of axle to center of axle. There is a 1/16 inch variable plus or minus the 4 ½ inches.

Hitch:

Maximum hitch height of 4 inches.

Body:

Must be an 18 wheeler body. Tires must be located in the factory wheel openings. All components must be under the body.

Other:

This class is to be tandem axle four wheel drive. The front axle must be fixed. No hinged or pivoting axles. The front axle is not to be driven.

Carpet Big Rig
Weight	Motor Level	Drive	Length	Battery	Surface
7 lbs	Modified	Tandem	20"	See Below	Carpet

Motor:: Limit of one Modified motor.
Battery:: Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.
Chassis:: May be scratch built or a combination of kit components. May be built with any of the following: Steel, aluminum, fiberglass, or plastic.
Tires:: All tires must be 1/10th scale. All four drive tires must be of the same size. Maximum tire width is 2 inches.
Weight:: Maximum vehicle weight is 7 lbs.
Dimensions:: Maximum vehicle length is 20 inches. Maximum vehicle width is 11 inches.
Wheelbase:: No limit on the overall wheelbase except within the vehicle dimensions and body limitations. The rear axles are to be 3 ½ inches apart, center of axle to center of axle. There is a 1/16 inch variable plus or minus the 3 ½ inches.
Hitch:: Maximum hitch height of 2 inches.
Body:: Must be an 18 wheeler body. Tires must be located in the factory wheel openings. All components must be under the body.
Other:: This class is to be tandem axle four wheel drive. The front axle must be fixed. No hinged or pivoting axles. The front axle is not to be driven.

4WD Pro Modified
Weight	Motor Level	Drive	Length	Battery	Surface
7 lbs	Modified	4WD	21"	See Rules	Carpet

Motor:: Limit of one Modified motor
Battery:: Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.
Chassis:: May be a kit, scratch built, or a combination of both.
Tires:: Maximum tire diameter is 3 ¼ inch. Minimum tire diameter is 2 ½ inches. Maximum tire width is 2 ½ inches. Minimum tire width is 1 ¾ inches. Tires must be rubber "V" bar tread type. Cutting of tires is not allowed.
Weight:: Maximum vehicle weight is 7 lbs. Weight covers are permitted.
Dimensions:: Maximum vehicle length is 21 inches. Maximum vehicle width is 9 inches. The furthest point forward from the centerline of the rear axle shall be no more than 17 inches, or 6 inches from the centerline of the front axle.
Wheelbase:: Wheelbase is not to be less than 10 inches or more than 11 inches.
Hitch:: Maximum hitch height is 2 inches. Center of the hitch hole shall be no more than 2 ½ inches from the center of the rear axle.
Body:: Must be 1/10 scale pickup truck body. Body must resemble a 4 wheel drive truck that is as realistic as possible to a 4X4 truck that you see at a full scale pulling event. If an alternate body, such as a balsa body is to be used, a Parma model number 10102 or 10103 shall be used as the template for the wheel openings. The rear wheel openings may not be cut beyond the factory lines. The front wheel openings must use the factory lines but may have the bottom corners trimmed for tire clearance. The wheels must fit the body wheel openings. The body may not be cut in order to make it longer or shorter. The body must have tailgate and grille.

4WD Modified Driveshaft
Weight	Motor Level	Drive	Length	Battery	Surface
10 lbs	Modified	4WD	24"	See Below	Dirt

Motor:: Limit one Modified motor.
Battery:: Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.
Batteries must be concealed.
Chassis:: Chassis may be scratch built or combination of kit components.
Tires:: Maximum tire diameter is 4 ½ inches. Maximum tire width is 2 ¾ inches. Tires may be cut. Maximum of four tires.
Weight:: Maximum vehicle weight is 10 lbs.
Dimensions:: Maximum vehicle length is 24 inches. Maximum vehicle width is 11 ½ inches. The furthest point forward from the centerline of rear axle shall be no further than 20 inches.
Wheelbase:: Maximum wheelbase is 11 ¾ inches.
Hitch:: Maximum hitch height is 2 inches.
Body:: Any scale appearing body is allowed. Wheels must be fit in the body wheel openings.
Other:: This class will be for shaft drive trucks. No straight direct shafts allowed. A driveline that includes universal joints is required. Gear box must be located between the front and rear axles.

4WD Scratchbuilt Truck
Weight	Motor Level	Drive	Length	Battery	Surface
10 lbs	Modofied	4WD	24"	See Below	Dirt

Motor:: Limit one Modified motor.
Battery:: Brushed motor = 8.4 nominal max voltage. Batteries must be concealed.
Chassis:: Chassis may be scratch built or combination of kit components.
Tires:: Maximum tire diameter is 4 ½ inches. Maximum tire width is 2 ¾ inches. Tires may be cut. Maximum of four tires.
Weight:: Maximum vehicle weight is 10 lbs.
Dimensions:: Maximum vehicle length is 24 inches. Maximum vehicle width is 11 ½ inches. The furthest point forward from the centerline of rear axle shall be no further than 20 inches.
Wheelbase:: Maximum wheelbase is 11 ¾ inches.
Hitch:: Maximum hitch height is 2 inches.
Body:: Any scale appearing body is allowed. Wheels must be fit in the body wheel openings.
Other:: This class will be any drive type trucks. Straight direct shafts allowed. Examples of the drive types are; chain drive, direct shaft, and belt drive.

4WD Box Stock
Weight	Motor Level	Drive	Length	Battery	Surface
14 lbs	Modified	4WD	19 1/2"	7 Cells	Dirt or Carpet

Motor:: Limit two Modified motors.
Battery:: Brushed motor = 8.4 nominal max voltage.
Brushless motor =7.4 nominal max voltage.
Battery must be in stock location with battery box. Battery covers and holders maybe removed to allow for a 7 cell battery pack.
Chassis:: The chassis, gearbox and suspension must be original for that vehicle. Minimum pinion size is an 8 tooth 32 pitch and must be visible. Motor swing adapters are allowed. No additional gearboxes are permitted. Suspension may be locked at each wheel only. Aluminum steering mechanisms and gearbox braces are allowed. Rear wheel steering may be locked. Steering servo may be used and may be relocated. A ¼ scale steering servo is allowed. USA is allowed to use replacement dog bones from an R/C manufacturer. Items not related to the suspension may be removed. All stock suspension must be present and that includes the shocks.
Tires:: All four tires must be of the same size and stock for that vehicle. Bar tires only. No street or foam tires. Cutting of tires is not allowed. Stuffing of tires is allowed.
Weight:: Maximum vehicle weight is 14lbs. No weight past the front bumper.
Dimensions:: Maximum vehicle length is 19 ½ inches. Maximum vehicle width is 16 inches.
Wheelbase:: Must be original for that vehicle.
Hitch:: Maximum hitch height of 4 inches.
Body:: May be changed to lexan but must resemble a real type truck. For example a Ford, Chevy, or Dodge ½ or ¾ ton pickup truck.
Electronics:: An ESC is allowed.
Other:: This class is limited to factory production dual-motored 4WD vehicles.

2WD Pro Modified Nitro
Weight	Motor Level	Drive	Length	Battery	Surface
10 lbs	.15 Nitro	2WD	19"	Nitro	Dirt

Power Plant:: Maximum of .15 cubic inch nitro engine.
Chassis:: Chassis may be scratch built or combination of kit components.
Tires:: Maximum rear tire diameter is 5 ½ inches. Maximum rear tire width is 3 ¼ inches. Minimum front tire diameter is 2 inches. Rear tires must be bar type.
Weight:: Maximum vehicle weight is 10 lbs.
Dimensions:: Maximum vehicle length is 19 inches. This is to be measured from the rearmost portion of the hitch to the most forward part of the vehicle.
Wheelbase:: Maximum wheelbase is 11 ½ inches.
Hitch:: Maximum hitch height is 4 inches.
Body:: Must use a truck, van or car body only.

2WD Nitro
Weight	Motor Level	Drive	Length	Battery	Surface
7 lbs	.30 CU.IN.	2WD	18"	Nitro	Dirt

Power Plant:: One two stroke nitro engine with a maximum displacement of .30 cubic inches. Engine is to be mounted in the front 50% of vehicle. Must have a store bought tuned exhaust pipe. No straight pipes are allowed.
Chassis:: Chassis may be scratch built or a combination of kit components.
Tires:: Rear tires are to be Tamiya "Wild Willies, Lunchbox, or Midnight Pumpkin" type tires only. Tires may be cut. Steer tires are to be a minimum of 13/8 inch in diameter.
Weight:: Maximum vehicle weight is 15 lbs.
Dimensions:: Maximum vehicle length is 18 inches from the center of the rear axle to the furthest point forward. Maximum width is 9 5/8 inches.
Wheelbase:: Wheelbase must fit under body.
Hitch:: Maximum hitch height is 4 inches. The hitch hole is to be located 1 7/8 inch behind the rear axle as measured from the center of the axle to the rear of the hitch hole. Vertical holes that require the sled hood to be hooked horizontally are not permitted.
Body:: Any scale appearing body is allowed.
Special:: At the time of printing the NR/CTPA felt it was in the best interest for class growth to not enforce any penalties for the vehicles with out a 90 degree rear axle. The penalties will not be enforced until a time when either drive type can support themselves.

2WD Gas
Weight	Motor Level	Drive	Length	Battery	Surface
25 lbs	39cc	2WD	24"	Gasoline	Dirt

Engine:: Maximum of one two stroke engine. Maximum displacement of 39cc.
Fuel:: A maximum of 4 fluid ounces of gasoline. Fuel on board shall be no more than necessary. All fuel must be contained within the fuel system.
Chassis:: Any scratch built chassis is allowed.
Tires:: Maximum tire diameter is 6 ½ inches. Maximum tire width is 4 ½ inches. Maximum of four tires. Tires may be cut.
Weight:: Maximum vehicle weight of 25 lbs.
Dimensions:: Maximum vehicle length is 24 inches. Maximum vehicle width is 16 inches.
Hitch:: Maximum hitch height of 4 inches.
Body:: Any scale appearing body is allowed. If an econo mod tractor or mod tractor it needs fenders, roll cage, seat, steering wheel and an instrument panel.
Safety:: Vehicle must have a kill switch that will kill the engine if the vehicle becomes disconnected from the pulling sled. Vehicle must be hooked to the sled, an anchor point or set in on cradle before starting. All primary belts, chains, sprockets and clutches must be enclosed with a minimum of 1/16" thick metal (or lexan) except for the final reduction to the axle.

Insane
Weight	Motor Level	Drive	Length	Battery	Surface
15 lbs	See Rules	2WD	18"	Unlimited	Dirt

Motor:: No motor or engine restrictions. May use Gas, Nitro, or Electric power plant. Must be safe.
Chassis:: Chassis may be scratch built or combination of kit components.
Weight:: Maximum vehicle weight is 15 lbs.
Dimensions:: Maximum vehicle length is 18 inches. Maximum vehicle width is 12 inches.
Hitch:: Maximum hitch height of 4 inches.
Body:: Must resemble some kind of full scale pulling vehicle. For any unusual vehicles it is recommended that participant have a photo of the full scale puller.
Safety:: Must have shielding to contain flying parts. The body may be considered to be the shielding. Must have a hitching point for a safety tether or kill switch. The hitch point must be just above the pulling hitch if using a safety tether. If the vehicle is Nitro or Gasoline operated, the vehicle will be hooked to the sled, an anchor or set on a cradle before starting
Exhaust:: Gas or Nitro vehicles are required to adapt to an exhaust elimination system. The current system adapts best to exhaust exiting from the top of the vehicle.

2WD Unlimited
Weight	Motor Level	Drive	Length	Battery	Surface
20 lbs	No Limit	2WD	28"	Unlimited	Dirt

Motor:: No Limit to power source (gas, nitro, electric).
Chassis:: Chassis may be scratch built or combination of kit components.
Tires:: Maximum rear tire diameter 7 inches Minimum tire rear diameter is 3 inches. Maximum rear tire width is 4 inches.
Weight:: Maximum vehicle weight is 20 lbs.
Dimensions:: Maximum vehicle length is 28 inches. Maximum vehicle width is 16 inches.
Hitch:: Maximum hitch height of 4 inches.
Safety:: Must have shielding to contain flying parts. The body may be considered to be the shielding. Must have a hitching point for a safety tether or kill switch. The hitch point must be just above the pulling hitch if using a safety tether. If the vehicle is Nitro or Gasoline operated, the vehicle will be hooked to the sled, an anchor or set on a cradle before starting
Exhaust:: Gas or Nitro vehicles are required to adapt to an exhaust elimination system. The current system adapts best to exhaust exiting from the top of the vehicle.