Rules

ROAR What is ROAR?

ROAR is the official U.S./Canadian sanctioning body for R/C car and truck competition.

ROAR is responsible for producing and maintaining rules that are fair for all parties involved members and manufacturers alike. As an official IFMAR bloc, ROAR is also responsible for organizing race teams that represent the U.S. and Canada to compete at IFMAR World Championships for all IFMAR CLASSES.

Why not find out more about ROAR?

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Rules

Any wheel/Tire manufactured for competition may be used as long as it meets the class specs.
Tires must be of one piece in circumference.
No sectioning or piecing tires together.
No spikes, tubes, or additional items to be glued to the outside of tires or passed through from the inside.
Only tires manufactured for a specific class may be used. Must be rubber only and available as a tire for that class.
No tires created for other vehicle types even if they fit the specifications will be allowed.
Cutting or modifying the tread is allowed. Modifying the tire carcass in anyway is prohibited.
Brakes in working condition on all cars is mandatory. Cars should be able to sit still with the engine still running, while the brakes are applied.Exhaust pipes are also required on every car. The maximum sound level is 85 decibels, measured at a ninety degree angle to the side of the car from a distance of 30 feet, 3 feet above the ground, with the car at maximum throttle and at all speeds. Any pipe made for specific class and engine allowed and legal. No modifications allowed.A car that loses its exhaust pipe will be black-flagged.Variable exhaust timing, porting, or exhaust pipes with movable parts are not allowed.
All engines must be available through hobby shops or available to public.
Throttle return spring, rubber band, etc must be in place.
No Fuel additives
Lipo's must be charged in a "lipo" sack unless charged in your trailer. This is for the safety of the surrounding racers.

Slash Clash Rules

Body: All trucks must be the Traxxas Slash body, or aftermarket slash specific bodies.

Chassis: No modifications may be made to the chassis system. Vehicles mst be raced in it's stock form. Original Traxxas Replacement parts only, as supplied on original truck for damaged/worn parts.

Suspension: Both the front & the rear suspension systems must remain in stock form. Original Traxxas parts only. No aftermarket/Hop-up replacement components may be installed.

Legal Tuning Parts: Original Traxxas Shock Springs may be used
Shock Cap may be replaced with Alum Shock Cap #2667
Original Traxxas Turnbuckles maybe used 3139X, 3139A, 3737, 3737A.

Steering: No modifications may be made to the steering system. Original Kit parts only. You may install any servo saver or servo drive-horn that you so choose.

Bearings: Any manufacturer bearing may be used.

Electronics: Original RTR Kit electronics Speed Control (XL-5) & Servo (2075) only. You may install any Receiver you so choose. On board traction/drift device or Gyro's NOT permitted.

Motor: This class is restricted to a stock traxxas Titan 12T R/C motor.

Battery: This class is limited to any 1 - 6, 7, 8 cell " Nicd" , "Nimh" made up of "SubC" size cells. No LIPO.

Wheels: Original Traxxas Slash 2.2" wheel, or after market wheels.

Tires: Original Traxxas 2.2" Slash Tire.

Drive line: Only the original Traxxas Drive Train may be used. No aftermarket or Hop-up replacement drive components may be installed. Traxxas Steel Planetary Gear Differential Only. Any of the 3 Traxxas spur gears (4683, 4686, or 8690) are permitted. Any pinion gear that mounts without modifications needed may be used.

Ball Differentials are NOT permitted in the spec class.

Weight: Who Cares.

Monster Truck (Nitro & Electric) 1/8 & 1/10

To be an Monster Truck, the lowest point of the engine must sit at least 1.5" inches above the lowest point along the front-back centerline when compressed (usually the "skid plates").No flat Chassis plate (1/8 buggy or arena truck) chassis.

To tech questionable ETs, remove the wheels, place MT on flat surface, compress the vehicle fully and a ruler (or 1.5" gage) could be used vertically to measure the engine above the surface. No flat chassis (1/8 buggy style).

Diesel Conversions are legal.

ELECTRIC TRUCKS WILL BE REQUIRED TO MAKE PIT STOPS OR A BATTERY CHANGE TO EQUAL NITRO STOPS. DURATION AND FREQUENCY TO BE DECIDE AT EACH EVENT..

Examples that fit within the above definition: T (and S) -Maxxes, Savage, MGT, Revo, TNX/TC, and LST.

Engine / Motor         No Limitations on motor size / type
Max Weight              No maximum Weight
Min Weight               No minimum weight
Electric or Lipo      Both are allowed
Tire Size           No minimum or maximum measurements

1/8 Nitro Truck

Wheel Base

Max vehicle width

Transmission / Diff

Engine

Carb

Exhaust

Minimum weight

Fuel Tanks and Filters

Bodies

Bumpers

Rear Spoiler/Wing

Skid Plates

Wheels

Tires

Minimum: 12" / Maximum: 16"

18" (Outside tire to outside tire)

Single speed direct drive (1/8 buggy) style driveline only

.21 through .30

No Size restrictin Must be mounted securely to the motor

Pipes must meet the 85 decibel limit and have no movable parts in them

8lbs. 6 oz

Single fuel tanks only no more than 150mililitres/cc. This includes fuel line from tank to carb and filter(s).

Must be made for arena truck class

Bumpers are optional. If used, must not extend further than 1" past the body on the front and rear

Stock or aftermarket wing made for class.

Skid Plates must not extend further than 1" past the body on the front and rear.

Must be manufactured for Arena Trucks

See tire/wheel rule Must be available on the market and produced for the specific class.The new LPR wheels and tires are legal.

1/8 Nitro Buggy

Max Buggy Length

Max Buggy Width

Max Buggy Height

Buggy wheel base

Transmission

Engine

Minimum weight

Fuel Tanks and Filters

Bodies

Wheel diameter

Wheel mounting

Maximum wheel width

Tires

28.74" (730mm)

12.20in. (310mm)

9.84in. (250mm)

Minimum: 10.8" (270mm) Maximum: 13.2" (330mm)

Single speed only

.21 Only

7lbs .05oz (3.2 kilos)

Single fuel tanks only no more than 150mililitres/cc. This includes fuel line from tank to carb and filter(s).

Must be made for arena truck class

Minimum: 3.2" (81.28mm) Maximum: 3.54" (90.0mm)

Wheels must be securely mounted at all times

2.03" (51.59mm)

See tire/wheel rule Must be available on the market and produced for the specific class.

Maximum height is measured with suspension fully compressed.

Electric 1/8 Buggy

Max Buggy Length

Max vehicle width

Max Buggy height

Buggy wheel base

Minimum weight

Wheel diameter

Wheel mounting

Maximum wheel width

Tire Diameter

Maximum tire width

Batteries

Motor

Transmission

Bodies

Tires

28.74" (730mm)

12.20in. (310mm)

9.84in. (250mm)

7lbs .05oz (3.2 kilos)

Minimum: 3.2" (81.28mm) Maximum: 3.54" (90.0mm)

Pipes must meet the 85 decibel limit and have no movable parts in them

Wheels must be securely mounted at all times

1.98" (50.45mm)

Minimum: 4.3" (109.22mm) Maximum: 4.7" (119.38mm)

2.03" (51.59mm)

4S, 5S or 6S lipo. No MAH limit. Batteries must be in good physical shape no cut, damaged or swollen pack allowed. Hard cases not required. Batteries must be secured properly in the vehicle, strapped or clamped into place before the event begins.

Brushless no limitation. Sensored or sensorless.

Single speed only

Buggy or other off-road style body that resembles an actual off-road racing vehicle

See tire/wheel rule Must be available on the market and produced for the specific class.

Batteries MUST ALWAYS be charged in a charging sack specifically designed and marketed for the purpose of charging lipos. Maximum height is measured with suspension fully compressed. Electric buggies may not run with the Nitro buggies.

Open CORR Off-Road Electric 1/10

1.) First lets all keep in mind that this class is a fun class. This class will involve a lot of young kids who have a blast doing it. Just remember to have fun!

2.) Any 1/10 2wd truck that is available to the public and made as a "CORR" type truck allowed(Traxxas Slash, HPI Blitz, AE SC10, Losi Strike, Etc)

3.) Must use either stock body or aftermarket body designed for truck. Added wings are not allowed.

4.) Any tire/rim combination allowed that is marketed for the CORR Trucks. No cutting/making tires. 1/8 Scale rims/tires NOT allowed. Tires/wheels must remain in stock form, zero modifications allowed.

5.) Batteries allowed will be either one 7.2 volt(6cell) nicad/nimh or one 2s 7.4 volt lipo batter. No mah limit.

6.) Motor: Nothing below a 13.5 Brushless. Must be available to the public.

7.) Chassis: Must remain in stock form,no modifications(Length, width, etc)

8.) Must be 2wd and may use ball or gear differentials.

9.) Have Fun!

The Panther LP is referenced for this size and will be the absolute smallest tire legal. Electric Arena Trucks may not run with the Nitro Arena Trucks. Batteries MUST ALWAYS be charged in a charging sack specifically designed and marketed for the purpose of charging lipos. Maximum height is measured with suspension fully compressed.