oval racing

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THUNDER ROAD HOBBIES

2021 OVAL RULES

General Rules Race Days

● Track is closed until race director opens up practice. 

● Track is closed to practice in between rounds.

● If you practice a pack you need to marshal. 

● We run an open practice, for that to work all must help and take turns. 

● No more than 8 cars on the track during practice

● Turn marshals should not work on or repair cars during a race.

● Any cars damaged and placed in the infield will remain there until that race is over.  DO NOT ENTER TRACK TO GET IT UNTIL RACE IS DONE.

● All drivers must turn marshal the race immediately following their race. 

● All cars will be made available for tech inspection before and after race if required by the race director. 

● All racers must have a personal transponder.

● All RC4 transponder will work, AMB TRANSPONDER WILL NOT WORK.

● No smoking or Vaping on track or Driverstand

● No leaning over driver stand rail while driving

● No use of Alcohol or legal/illegal drugs while racing.

● Fighting or arguments will lead to removal from race and property. 

● Please sign up and pay with race director before 30 min to start of race program

● Once racing starts no refunds will be giving.

● By racing you accept full responsibility for your personal being and equipment. You cannot hold Thunder Road Hobbies liable for personal injuries and or loss of equipment. 

Race directors will have ultimate authority over rules enforcement. The primary basis for any rules decision must be based on what will be best for the majority of racers. If an item is not addressed in the rules listed here then you should assume it is not legal.

CLASSES

● All classes are 1/10 scale 2wd unless noted otherwise

● Street Stock 21.5T Blinky 

● 13.5T FIXED TIMING SPRINT CAR 

● OPEN SC MODIFIED 

● LATE MODEL MOD

● OUTLAW SPRINT

● MID WEST MODIFIED 17.5 OPEN CHASSIS  Blinky ESC

● TRAXXAS STOCK STREET STOCK 

Four entries required for a class to run on race day. Additional classes may be added ie, kids, Traxxas, 1/8 at Race Directors choice.

CLASS RULES

Street Stock 21.5T Blinky

 ● Buggy based class. (B4,B5,B6,Losi type cars)
● 21.5T SENSORED Blinky ESC (NO BOOSTING ESC, NO KV MOTORS)

● No nonsensored KV motors after May 1St 2019
● 7.4 or 7.6 battery with max of 8.44 volts
● AKA Rebar stock foam
● J CONCEPTS SPRINTERS stock foam

● All 4 tires must be the same make and compound. 

BODY:
● Must cover most of the wheels
● NO decking or cutting out windows
● Rear of body must run straight across rear of car. Rear fender to rear fender. No cutting rear of car out.

● Max of 1” spoiler may be added for stability to rear of body, no end caps

● Bodies must be, McCallister, Custom Works, MRKustoms street stock dirt style.

 

CHASSIS:
●Battery center line no offsetting battery.
● Factory and RPM parts are to be used for this class.
●Must remain stock pick up points for shocks turnbuckles. no adding holes or parts to move locations.
●No modifying parts.
●Parts must be off the shelf parts available to the public for purchase

● No adjustable rear arms 

 13.5T FIXED TIMING SPRINT 

● Any 2wd production buggy or 2wd purpose built chassis

ESC/MOTOR:

● HOBBYWING JS4 SYSTEM, JUST STOCK ESC P/N 30112000  MOTOR P/N  30408010 COMBO P/N  38020240

 JS4 SYSTEM ARE TO BE BACK IN STOCK MID APRIL, UNTIL THEN ANY 13.5T MOTR AND ESC IN  BLINKY WILL PASS TECH.

● 2S Lipo 7.4V or 7.6V max voltage 8.44V 

● Lipo Battery must be within 10 degree F temp of controlled battery (no heating of battery for performance)

● Tires 

J CONCEPT SPRINTERS ANY COMPOUND

● No siping/grooving of tires allowed

● All 4 tire must be the same compound.

BODIES:

● Follow DODC body rules, LINK HERE

OPEN SC MODIFIED

● Any Factory production 2wd Short Course Truck (rear and mid motor) or custom/purpose built race chassis

● Tires 

DE SC G6T and grooved G6T

J CONCEPTS SPRINTERS STOCK FOAM

● No siping/grooving of tires allowed

● All 4 tire must be the same design and compound.

ESC/MOTOR:

● Any sensored/nonsensored ESC and 540/550 motor

● 2S Lipo 7.4V or 7.6V max voltage 8.44V 

● Lipo Battery must be within 10 degree F temp of controlled battery (no heating of battery for performance)

BODY

Body Length, Width, and Height:

13" max body width

28" max length (bumper to spoiler)

7.5" max body height measured from bottom of chassis

Center deck:

1" max deck rake.

1" max center deck taper (widest point of the deck can only be 1" wider than the narrowest point of deck)

Spoiler:

1.5" max spoiler height

Spoiler end plate max 2” high off center deck and 3.25” long

Roof:

0.5" max roof rake measured from deck

Maximum Roof width 9"

Maximum Roof length 9"

No roof spoilers, a bend down at the trailing edge of the roof is allowed for strength

Roof side rails allowed but must have a scale appearance and be on both the left and right sides of the roof.

1/4" bend down at the leading edge of the roof allowed.

Roll cage/Roof Supports:

Roll cage/roof supports must be cut or formed to resemble a roll cage.  No solid panel roof supports. Window netting and rock guards are allowed.

Nose:

Nose sides can extend a max of 1/4” above the plane of the nose panel

Nose sides can extend a max of 1/4” above the plane of the hood panel

Nose cannot extend past the inner edges of the front wheels

Main nose panel must be a flat plane.  No concave or scooped noses allowed.

Rear wheel wells must be cut out to expose most of the rear wheel

Left and right windows and sails can be open as long as both sides are the same.

LATE MODEL MOD

CHASSIS:

● Any 2wd production buggy or 2wd purpose built chassis

ESC/MOTOR:

● Any sensored/nonsensored ESC and 540 motor

● 2S Lipo 7.4V or 7.6V max voltage 8.44V 

● Lipo Battery must be within 10 degree F temp of controlled battery (no heating of battery for performance)

● Tires 

AKA Rebar

J CONCEPT SPRINTERS

● No siping/grooving of tires allowed

● All 4 tire must be the same design and compound.

BODIES:

● Follow DODC body rules, LINK HERE

OUTLAW SPRINT

● Any 2wd production buggy or 2wd purpose built chassis

ESC/MOTOR:

● Any sensored/nonsensored ESC and 540 motor

● 2S Lipo 7.4V or 7.6V max voltage 8.44V 

● Lipo Battery must be within 10 degree F temp of controlled battery (no heating of battery for performance)

● Tires 

AKA Rebar

J CONCEPT SPRINTERS

● No siping/grooving of tires allowed

● All 4 tire must be the same design and compound.

* Pro-line Slide Jobs can be ran until May 1st

BODIES:

● Follow DODC body rules, LINK HERE

MID WEST MODIFIED 17.5T OPEN CHASSIS  Blinky

● 17.5 motor/Blinky ESC
● 7.4 or 7.6 battery with max of 8.44 volts
● AKA Rebar

● J CONCEPTS SPRINTERS

 BODY:
-● USMTS or IMCA style body

 CHASSIS:
● Battery center line no offsetting battery.
● Must remain stock pick up points for shocks turnbuckles. no adding holes or parts to move locations.
● No modifying parts.
● Parts must be off the shelf parts available to the public for purchase

TRAXXAS STREET STOCK

● Chassis is a stock Traxxas Slash 2WD non LCG

● ESC is traxxas XL-5

● Motor must be Traxxas 12T P/N 3785 and cannot be modified

● Radio and RX may be changed

● Stock steering servo may be upgraded with metal gears or you my run a traxxas 2075X servo

● RPM arms, hubs and carriers may be used, Aluminum Shock caps may be used, all other parts must remain stock without any drilling or grinding. 

● Tire must be stock Traxxas Kumho or BFGoodrich® Mud-Terrain™ no cutting or grooving the tires and NO DOPING, the tires only can be cleaned with Simple Green type solution.

● BATTERY can be stock 7 cell NiMH battery or any two cell LIPO with max 80C rating and 8.4 volts

● BODY must be Street Stock SC size body Like Shark RC Bodies with max rear spoiler of 1” tall