Central Minnesota R/C Truck Pulling Association

Classes and Rules

CMR/CTPA is an affiliated club of the NR/CTPA
CMR/CTPA has changed some rules to fit the club.
All rules subject to change at any time to promote fairness.
CMR/CTPA is proud to follow rules proven over time in the NR/CTPA



Definition
Following NR/CTPA Rules

2WD:
Shall constitute one rear drive axle with 2 wheels only.
4WD:
Shall constitute two drive axles; one rear drive axle with two wheels and one front steer drive axle with two wheels. On pulling vehicles the front and rear tires will be no more than 1 inch difference in diameter. On racing vehicles the front and rear tires will be the same size in diameter and width. 4WD vehicles will be true 4WD vehicles. The Big Rig class is the only class allowed to use tandem drive axles.
Battery:
Shall be NiCd or NiMh cells only. Factory built batteries will be encased in the original factory wrapper with the label attached. All other batteries must be in clear shrinkwrap or clear tape. No added opaque tape or shrink wrap allowed. Batteries will be readily available R/C type. Example of a non-usable battery is the military issue 3volt “C” size. Individual class limits will be listed in that class section of this rulebook.
Body:
Shall be the shell that gives the vehicle its shape and allows it to resemble a full size car, truck, or tractor.
Chassis:
Frame of the vehicle not including suspension, steering, body or gearbox.
Dual wheel:
More than one tire on one rim or a combination of more than 1 tire with one rim on each side of an axle. No dual wheels are permitted. Foam tires may be glued together to make 1 tire on 1 rim and shall not be considered dual wheels.
ESC:
Electronic Speed Control
Factory production:
Any R/C product manufactured by a recognized R/C supplier in quantities of no less than 100 units per year. Bodies are not required to be “factory production” as long as they are realistic. Please refer to motor rules for specifics on them. Factory production vehicle: Any factory production vehicle kit originally manufactured for use other than a pulling vehicle. For example a Tamyia Clodbuster or a HPI Wheelie King are “Factory Production Vehicle”.
Front axle:
The device mounted at the front of the vehicle in order to provide a means for steering. The axle will be mounted so that the wheels line up with the wheel openings in the body. Exceptions will be made for “Factory Production Vehicles”. The tires on hinged or floating front axles are not allowed to contact the track surface if the vehicles front end lifts ¾ of an inch or more.
Front wheel openings:
The open place that allows the front wheels to have clearance to move when turned to the right or left. The wheel openings will be located behind the front most part of the body. Front wheels are not allowed to extend more than one inch on either side of the body. Exceptions are made for 4WD vehicles, Factory Production Vehicles that must run the original suspension, and replicas of full size vehicles.
Gearbox:
The unit consisting of the gears, belts, chains, case and/or mounting brackets. The gearbox is the means for transmitting the power from the motor to the wheels. An additional gearbox refers to a second gearbox that is attached to the main gearbox.
Hitch:
The apparatus used to hook the pulling sled to the vehicle. The hitch shall incorporate a 5/16 inch hole for the sled hook and will be no more than ½ inch from the rearmost end of the hitch drawbar. The hole must be located behind the axle. The sled chain will have a clear path to the hole with no interference from the vehicle. The hitch is to be fashioned from a strong and rigid material. All hitches will be rigidly mounted. The hitch must be mounted in such a way to not allow any movement longitudinally, vertically, or horizontally. Adjustable hitches are permitted but must be locked in position when pulling. Unless otherwise noted in the class rule the maximum hitch height is 4”. The following will also apply to the 2” maximum hitch height classes. The hitch is measured by placing the vehicle on the tech table, without any downward pressure during inspection. Horizontal hitches will be measured to the top of the hitch. Vertical hitches will be measured to the top of the hole. Any hitch with multiple holes will have the holes above the maximum covered with tape.
Intentional jerking:
The act of deliberately manipulating the controls of the vehicle in a way to advance the sleds position in an erratic manner.
MSRP:
Manufacturers Suggested Retail Price. Maximum motor size: The total outside length and diameter of the motor not including the output shaft.
Measuring device:
All measurements are to be made with a normal ruler. Micrometers and the like are not to be used for tech.
Monster truck:
A vehicle with oversized tires designed to go over large obstacles at a fast pace. Original: As manufactured and unmodified. Production Pulling Vehicle: Any vehicle manufactured specifically for pulling. This may be “factory production” or scratch built.
R/C:
Radio controlled.
R/C Motor:
A motor that is designed and built for the R/C industry.
Readily available:
Available off the shelf from hobby shops, distributers, or from retail mail order outlets. Special order or custom made items are not considered to be “readily available”. Scale appearance: Having the scaled down look of a full size vehicle or part.
Sled:
The device used to create a drag on the pulling vehicle in which to stop the vehicle.
Stock:
Factory original for that vehicle or piece of equipment.
Traction compound:
Anything that is foreign to that tire. Any substance that was not made for, put on, or into the tire at time of manufacture. Tire glues are allowed to mount tires to rims or to glue two tires together in order to make a wider tire.
Tread width:
The width of the tread only. This does not include the sidewalls.
Tube chassis:
A chassis that is constructed of square, round, hollow or solid tubular stock. The chassis is the component in which the gearboxes, suspension, radio equipment, battery, body and all other vehicle components are attached.
Wheel:
An assembly consisting of one tire and one rim.
Wheelie bar:
A device mounted to the rear of the vehicle to prevent the vehicle from flipping over backwards once the vehicles front tires loose contact with the pulling surface. This device is made up of a single or pair of bars with one or two wheels mounted on the bars. Wheelie bars are permitted in all classes. They may not extend past the legal length of the vehicle and may not interfere with the operation of the pulling sled in any way. Skid plates are not permitted. In the dirt classes skid pads may replace the wheels on wheelie bars for scale appearance. Flexible straps for static grounding are only permitted to touch the pulling surface. Wheelie bars are not to be use to rock the vehicle back and forth. This would be considered intentional jerking.

 

 

 

 

 

Motor Levels
Following NR/CTPA Rules

As you look through these rules you will see the following names used for motors. Please refer to these pages for definitions and clarifications of motor levels. Any variance of these rules will be listed in the class rules.

Stock:
Are to be motors that are R/C motors with non-adjustable end bells. These motors will be labeled as ROAR motors. Rebuildable stock motors will have an identification mark on the can and armature. These marks will either be the ROAR name or the manufacturers name along with the number 27. You can not tamper with, in any way, the timing adjustments, which include the use of cut brushes that will affect the timing. Ball bearings, external magnets, internal Cobalt or neodymium magnets are not permitted. You are allowed to machine the commutator with a comm. stick or a stock comm. lathe only. No opening of a motor with a staked end bell. You may disassemble rebuildable stock motor for maintenance. Other than machining the commutator you may not alter rebuildable motors. This includes swapping end bells, cans or armatures. You are allowed to change springs and brushes in the motor. The end bell must have a bushing.

Econo Modified:
Are to be motors that are readily available R/C motors. These shall be 05 can size modified motors. These may have ball bearings and adjustable timing. External magnets, internal Cobalt or neodymium magnets are not permitted. You are allowed to machine the commutator with a comm. stick or with a comm. lathe. The 4.5mm X 5mm brush and hood, “readily available R/C motor accessory” also known as the “P-94” brush hoods may be used. Motors from Stock may also be used.

Sport Modified:
Are to be motors that are readily available R/C motors. These shall be 05 can size motors with a minimum of 17 turn armature. These may have ball bearings and adjustable timing. External magnets, internal Cobalt or neodymium magnets are not permitted. Motors are to be a brushed motor. You are allowed to machine the commutator with a comm. stick or with a comm. lathe. The 4.5mm X 5mm brush and hood, “readily available R/C motor accessory” also known as the “P-94” brush hoods may be used. Motors from Stock may also be used.

Modified:
Are to be motors that are R/C motors. This level motor may have an adjustable end bell. This level of motors are allowed to have adjustable timing, modified or cut brushes, and ball bearings. The commutator is allowed to be machined. The output shaft is allowed to be shortened and/or have a flat spot machined in it. Drilling holes in the end-bells is allowed in order to cool motor. Maximum diameter is 2 ¼ inches. Maximum length is 3 ½ inches. The Astroflight Pullmaster I and Pullmaster IV are allowed in this level until further notice. Motors from Stock, and Econo Mod are allowed. Brushless motors are allowed at this level.

Open II:
These motors must be approved by the NR/CTPA. These are to be motors that are R/C motors with an adjustable end-bell. Maximum total wattage of all motors must not exceed 3100 watts. This level of motors are allowed to have adjustable timing, modified or cut brushes, and ball bearings. The commutator is allowed to be machined. The output shaft is allowed to be shortened and/or have a flat spot machined in it. Drilling holes in the end-bells is allowed in order to cool motor. Maximum diameter is 2 ¼ inches. Maximum length is 3 ½ inches. At print time the list of approved motors is Astroflight Pullmaster III, and IV, Astroflight 25, 40 and 60, Astroflight Sport, Finedesign, and Graupner.
 


Pulling Classes
Following NR/CTPA but with some changes.
All curent classes are for carpet pulling only.



Digger:
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 4 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:
No gearing limit.
Garden Tractor:

Motor:
Maximum of one Modified motor with a maximum MSRP of $125.00. No motors larger than a 550 can, Astroflight Pullmaster I, or an equivalent.
Battery:
6 cell "C" size 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 2 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.
 
5lb 2WD Truck:

Motor:
Maximum of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cells "C" size maximum.
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, tires can NOT be cut or sharpened in any way. Front tires are to be a minimum of 2 ¼" in diameter.
Weight:
Maximum vehicle weight is 5 lbs.
Dimensions:
Maximum length is 19 inches. Maximum width is 9 inches. The furthest point forward from the center-line 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.
7lb 2WD Truck:

Motor:
Maximum of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cells "C" size maximum.
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.  Traxxas Stamped tire are acceptable.
Weight:
Maximum vehicle weight is 7 lbs.
Dimensions:
Maximum length is 19 inches. Maximum width is 9 inches. The furthest point forward from the center-line 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:
Motor:
Maximum of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cells "C" size maximum. 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 not allowed to be cut.
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.
Super Stock Tractor:
Motor:
Maximum of one Modified motor with a maximum MSRP of $120.00.  Brushless acceptable.
Battery:
7 cells "C" size maximum. 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.  RC4WD Traxtor XL Pulling tires acceptable.
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.
Bar Tire Sportsman:
Motor:
Maximum of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cells "C" size maximum.
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 2 inches.
Big Rig:
Motor:
Limit of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cells "C" size maximum.
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 Stock:
Motor:
Limit of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cell "C" size maximum. Battery must be located under body and not visible.
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 10 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 Pro Modified:

Motor:
Limit of one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cell "C" size maximum. Battery must be located under body and not visible.
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 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 Drive Shaft:
Motor:
Limit one Econo Modified motor with a maximum MSRP of $60.00.
Battery:
7 cell "C" size maximum, 1000mHr 2/3 "C" minimum. 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.
Pro Stock Diesel:
Motor:
Econo mod motor 1 $60.00 retail
Battery:
7 cell sub c may not be located any farther forward on chassis than stock location.
Chassis:
A Hi-Lift, and SCX10 chassis must be used. Axles may be locked. Transmission must be stock for the High Lift or SCX10 Chassis and in the stock location. Rear suspension may be locked. Front suspension to be left factory with the exception of after market shocks. Wheelbase and chassis length must stay with the chassis original spec.
Weight:
10 lbs and all non scale appearing weights must be out of site from normal viewing. Weight boxes permitted. Weights may not exceed 5 inches from center of front axle forward.
Hitch:
Is to be 2-inch max. must meet all other NR/CTPA hitch rules.
Tires:
Any 1.9 tire allowed, dual wheels permitted ( if running dual's, body must have dualy fenders ). Any 1.9 wheel may be used.  Tires can not be cut or sharpened in any way.
Body:
Shall represent a street licensed Diesel pick-up as you would see pulling at a local fair. Shall have at least one exhaust stack facing upward either in the bed or on the hood. This will be left up to the participant.

Pro Modified Diesel:

Motor:
Econo mod motor 1 $60.00 retail
Battery:
7 cell sub c may not be located any farther forward on chassis than stock location.
Chassis:
A Hi-Lift, and SCX10 chassis must be used. Axles may be locked. Transmission may be modified or after market, but must be in stock location for the Chassis. Rear suspension may be locked. Front suspension to be left factory with the exception of after market shocks. Wheelbase can be no more then 14.5" center to center ( when lengthening the wheel base, body must match up with wheel wells, either a exstended cab or quad cab body ).  Duals can not be wider then 11.25 inches.
Weight:
10 lbs and all non scale appearing weights must be out of site from normal viewing. Weight boxes permitted. Weights may not exceed 5 inches from center of front axle forward.
Hitch:
Is to be 2-inch max. must meet all other NR/CTPA hitch rules.
Tires:
Any 1.9 tire allowed, dual wheels permitted ( if running dual's, body must have dualy fenders ).  All tires must be the size and brand on front and rear axle.  Any 1.9 wheel may be used.  Tires may be cut.
Body:
Shall represent a street licensed Diesel pick-up as you would see pulling at a local fair. If wheel base has been lengthened, body must be a extended cab or crew cab. Shall have at least one exhaust stack facing upward either in the bed or on the hood. This will be left up to the participant.
 Insane:
Motor:
No motor restrictions. May only use 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 2 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
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Racing Classes

All curent classes are on carpet.



1/18th and 1/16th scale racing:
This is a class for beginners to learn racing and introduce them to R/C monster truck racing.
This class is not designed to be highly competitive. When participants are achieving times with a truck that is comparable to the times achieved with trucks in a regular class, that participant will be moved to the regular class. This point will be reached by averaging out all of the times from the regular class for the same event. This decision will be made by the Monster Truck Director and their staff.
The participants should arrange for their own vehicle. The vehicle may be of any make, size, or configuration. The truck can be either 2WD or 4WD.
In the event a truck is not available for every member of the family, a truck may be used more than once in this class.

1/10th scale racing:
4WD Box Stock
Motor:
Limit of two motors. 3 motor options allowed:
1. Original, out of the box
2. ROAR* 27T Motor
3. 27T or higher turn motor
Battery:
Up to 6-cells, sub C-size maximum. Battery must be in stock location. Must be NiCad or NiMH.
Chassis:
The chassis* and gearboxes* must be *original equipment for that vehicle. Original gears and pinion only. Monster truck conversions are not allowed. *Original Shocks and Suspension, no modifications allowed. Aftermarket ball bearings allowed on all axles and gear assemblies. No straight axles allowed. Entire chassis must be present in stock location and direction. Must use 4 wheel steering, may upgrade speed control.
Tires:
*Original equipment for that vehicle. No cut tires allowed.
Weight:
Minimum 8 lbs.
Wheelbase:
Must be original for that vehicle.
Other:
Only changes allowed are to lexan body and ESC. Open to all types of 1/10 scale 4 wheel steering trucks that fit current rules.
4WD Super Stock
Motor:
Limit of two 27T stock motors with a maximum MSRP of $60.00 each.
Battery:
Maximum of 2 cell LiPo or 7 "C" cell NiMh or NiCad.
Chassis:
May be stock or aftermarket, Ground Pounder or Clodbuster chassis.
Tires:
Maximum tire diameter is 6 ½ inches. The maximum tire width is 4 ½ inches. The minimum tire diameter is 5 ½ inches. The minimum tire width is 4 inches. May run any tread tire that is available or stock tire that truck came with.
Weight:
Minimum 7 3/4 lbs.
Wheelbase:
11 inches maximum when compressed.
Suspension:
May use oil shocks. Shock mounting positions must not differ from that of a stock Ground Pounder or Clodbuster chassis. Must use stock swing arms. Stock suspension should maintain the factory geometry. No sway bar(s) permitted.
Steering:
2 or 4 wheel steering is permitted. Servo mounts may be changed. Steering may be upgraded with aftermarket parts.
Gearboxes:
May use stock or aftermarket gearboxes. May change the axles to aftermarket parts.
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