Dirt Oval Class Rules

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Download - Dirt_Oval_rules.pdf
Download - Dirt_Oval_rules.doc

Track – Dirt OVAL
Class - Stock B-Mod
Chassis - B-Mod’s are normally created from converting 1/10 scale Off-Road Buggies.
Rules:
Body: EDM, Dirt Modified, Wedge, Grand National, & ASA style bodies. Wheel wells must be cut out.
Rear spoilers: 2.50” max cord length, no wider that body. (wings not allowed)
Side Dams: Not Allowed
Vehicle Size L x W x H: 22” Max Length x 9.88” Max Width x 9” Max Height
Wheelbase: 9” Min
Chassis: Any chassis may be used.
Wheels: 2.20” dia Max / 1.50” dia min , 2.00” width max
Tires: Foam Only - 3.55” dia max , 2.00” width max
Motor: Track approved 27 turn stock motors (motor can label removal not allowed)
Battery: 6 or less sub-C rechargeable batteries rated at 1.2 volts or less.
Drive Train: 2 wheel drive
Transmission: Standard manufactured single speed 1/10 scale Off-Road buggy enclosed transmissions. (spur gear may be exposed) No home built transmissions allowed!
Weight: Minimum 50oz. (with battery)

Track – Dirt OVAL
Class – Sportsman Touring Car
Chassis – Kit assembled or Stock RTR (ready to run) 4WD TC style chassis and Bodies
Rules:
Body: 2 or 4 door Touring Car body. Wheel wells must be cut out.
Spoiler and Wings: Std RTR wing or 50mm max cord length
Wing Side Dams: Std RTR dims or 50mm length x 25mm height max
Body side Dams: Not Allowed
Vehicle Size L x W x H: 460mm Max Length x 195mm Max Width x 130mm Min Height
Wheelbase: 270mm Max / 250mm Min
Chassis: Any unmodified stock RTR TC chassis may be used.
Tires: 67mm dia max foam or rubber / 28mm Max Width / 22mm Min Width
Motor: RTR motors and Track approved 27 turn stock motors. (motor can label removal not allowed) Anything other than original RTR and track approved motors are not allowed.
Battery: 6 or less sub-C rechargeable batteries rated at 1.2 volts or less.
Weight: 1400g/49.38oz/3.09lbs. Min (with battery) (1 pounds = 16 ounces = 453.59g)

Track – Dirt OVAL
Class – Expert Touring Car
Chassis - Normal 4WD TC style chassis and Bodies
Rules:
Body: 2 or 4 door Touring Car or Dirt Oval Wedge. Wheel wells must be cut out.
Spoiler and Wings: 50mm max cord length
Wing Side Dams: 50mm length x 25mm height max
Body side Dams: Not Allowed
Vehicle Size L x W x H: 460mm Max Length x 195mm Max Width x 130mm Min Height
Wheelbase: 270mm Max / 250mm Min
Chassis: Any TC chassis may be used.
Tires: 67mm dia max foam or rubber / 28mm Max Width / 22mm Min Width
Motor: Track approved 27 turn stock motors (motor can label removal not allowed)
Battery: 6 or less sub-C rechargeable batteries rated at 1.2 volts or less.
Weight: 1400g/49.38oz/3.09lbs. Min (with battery) (1 pounds = 16 ounces = 453.59g)

Track – Dirt OVAL
Class - Stock Sportsman and Expert Truck
Chassis - Kit assembled or Stock RTR (ready to run) 1/10 scale off-road trucks.
Rules: (Currently the same for both sportsman and Expert Truck)
Body Type: Off-Road, Original RTR or similar bodies only. Wheel wells must be cut out.
Body size: 5.75” min Width x 4.25” min Height
Rear spoilers: 2.50” max cord length (wings not allowed)
Side Dams: Not Allowed
Vehicle Size L x W: 18.00” Max Length x 13.00” Max Width
Wheelbase: 9” Min
Chassis: Any unmodified stock or RTR Truck chassis may be used.
Wheels: 2.20” dia Max / 1.50” dia min / 2.00” width max
Tires: Foam Only - 3.55” dia Max , 2.00” Width Max (0.25” Thick Min sidewall)
Motor: Track approved 27 turn stock motors (motor can label removal not allowed)
Battery: 6 or less sub-C rechargeable batteries rated at 1.2 volts or less.
Drive Train: 2 wheel drive
Transmission: Standard manufactured single speed 1/10 scale Off-Road truck enclosed transmissions. (spur gear may be exposed) No home built transmissions allowed!
Notes:

• Bushing may be substituted with bearings
• Not allowed - manufacturer and kit part mixing
• Not allowed - short arms
• Not allowed - short shock mounts
• Not allowed – home built parts

Weight: 50oz. Min (with battery)

Track – Dirt OVAL
Class - Modified Expert Truck
Chassis - Mod Trucks are normally created from converting 1/10 scale Off-Road Buggies or Trucks and may use flat plate or stock tub chassis’s.
Rules:
Body Type: Modified Dirt Oval truck or Off-Road Truck bodies. Wheel wells must be cut out.
Body size: 5.75” min Width x 4.25” min Height
Rear spoilers: 2.50” max cord length (wings not allowed)
Side Dams: Left side only, level to or shorter than truck cab roof, can not extend in front of the cab or past the spoiler.
Vehicle Size L x W: 18” Max Length x 13” Max Width / 11”Min Width
Wheelbase: 9” Min
Chassis: Any chassis may be used, tub or plate.
Wheels: 2.20” dia Max / 1.50” dia min / 2.00” width max
Tires: Foam Only - 3.55” dia Max , 2.00” Width Max (0.25” Thick Min sidewall)
Motor: No Limit (brushless allowed)
Battery: No Limit (LiPo’s allowed)
Drive Train: 2 wheel drive
Transmission: Single speed transmissions or direct drive.
Notes:

• Bushing may be substituted with Bearings
• Allowed - manufacturer and kit part mixing
• Allowed - short arms one side only
• Allowed - short shock mounts
• Allowed – home built parts

Weight: 40oz. (with battery)

Track – Dirt OVAL
Class - EDM (Eastern Dirt Modified)
Chassis - Typically created from converting 1/10 scale Off-Road Buggies or using Custom Works Intimidator kits. May use flat plate or tub chassis’s.
Rules:
Body Type: EDM style resembling actual Dirt Oval , IMCA,or WISSOTA Modified cars. Wheel wells must be cut out.

• All bodies production & scratch-built, must leave front tires completely exposed while covering the front chassis area. Rear tires must be a minimum of “1/3 exposed”, but not completely outside the body.
• Rear deck of body must be above the rear tires at the top of the suspension travel.
• The wheel openings must be cut into the horizontal plane of the rear deck surface
• Shocks cannot protrude through the rear deck of the body unless the car has the original long style shocks
• Front and rear windows must be cut out or laid down. Side windows must be clear or cut out.
• Height: The lowest portion of the roof must measure at least 5" from the ground. The highest portion of the roof must not exceed 7 ½" from the ground ( this includes side panels and roof spoilers)
• Rear of bodies must be cut out for scale realism
• Rear side panels must be of equal size and length
• All bodies must have a separate hood section with a minimum width of 2" and a maximum width of 4”. There is a maximum of 0.25" extension on hood on side panels past the hood center section.
• Roof rails allowed with a max 0.25” in size. Rails must appear on both sides of the roof section and be of equal size. The body cannot have roof rails with " Windsor" type side panels.
• Must have polycarbonate or similar shock-absorbing front bumper. Front bumper cannot be shaped to act as a front wing.

Rear spoilers: 2.50” max cord length, no wider that body. (wings not allowed)
Roof spoiler: 0.50” max cord length, no wider that body.
Side Dams: Not allowed
Vehicle Size L x W: 20.00” Max Length x 9.88” Max Width
Wheelbase: 9” Min / 11.50” Max
Chassis: Any chassis may be used, tub or plate.
Wheels: 2.20” dia Max / 1.50” dia min , 2.00” width max
Tires: Foam Only - 3.55” dia max , 2.00” width max (0.25” Thick Min sidewall)
Motor: Stock and Modified classes may be run and is determined by turn out.
Battery: 6 or less sub-C rechargeable batteries rated at 1.2 volts or less.
Drive Train: 2 wheel drive
Transmission: Single speed transmissions or direct drive.
Notes:

• Allowed - manufacturer and kit part mixing
• Allowed – home built parts

Track – Dirt OVAL
Class – Sprint Car
Chassis - Typically run with Custom Works Enforcer kits or similar, or scratch built cars.
Rules:
Body Type: Must resemble a real sprint car body to including a rear tank section and fake engine headers.

• Sprinters must run a wing and it must be mounted over the driver’s cockpit of the body.
• The maximum size of the wing surface will be 7 inches from front to back and 6 inches side to side. Side fins will have a surface of 7 inches from front to back and 5 inches top to bottom.
• A front wing is optional and cannot exceed 8 sq. inches
• A roll cage is required (may be metal or plastic and may be built into the body)
• The roll cage must resemble a full-scale cage
• Minimum height of the cage is 4 ¼ inches from the chassis to the top of the cage
• If the cage is not built into the body it must be constructed of round stock.
• Side Nerf Bars required made from round stock.
• Rear Bumper required made from round stock.
• Front Bumper required made from shock absorbing/flexible material. A bumper cannot be wider than the inside of the front wheels.

Vehicle Size L x W: 20.00” Max Length x 11.00” Max Width
Wheelbase: 9” Min / 11.00” Max
Chassis: Any chassis may be used, tub or plate. The chassis cannot extend beyond the body on the left or right sides but may extend beyond the front or rear.
Wheels: TBD
Tires: Foam Only, 2.50” width max (0.25” Thick Min sidewall)
Motor: No Limit (brushless allowed)
Battery: No Limit (LiPo’s allowed)
Drive Train: 2 wheel drive
Transmission: Single speed transmissions or direct drive. (spur gear may be exposed)
Notes:

• Allowed - manufacturer and kit part mixing
• Allowed – home built parts

Weight: 52oz. (with battery)

Track – Dirt OVAL
Class – Late Model
Chassis - Typically created from converting 1/10 scale Off-Road Buggies or run using Custom Works Intimidator or similar kits. May use flat plate or tub chassis’s
Rules:
Body: Dirt Oval Wedge only. Shocks cannot protrude though the body. Wheel wells must be cut out.
Rear spoilers: 1.50” max cord length, no wider that body. (wings not allowed)
Side Dams: 14.00” max length x 5.50” max height, left side only
Vehicle Size L x W x H: 22.00” Max Length x 9.88” Max Width x 11.00” Max Height
Wheelbase: 9” Min
Chassis: Any chassis may be used.
Wheels: 2.20” dia Max / 1.88” dia min , 2.00” width max
Tires: Foam Only – 1.88” max width / 1.38” width min
Motor: No Limit (brushless allowed)
Battery: No Limit (LiPo’s allowed)
Drive Train: 2 or 4 wheel drive
Transmission: Single speed transmissions or direct drive.
Weight: Minimum 52oz. (with battery)