MOTORAMA RC DIRT OVAL COMPETITION REGISTRATION

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General Rules:

No Tents or EZ ups except for vendors.

No Gyros or driver assist allowed. If at any point you are found to be using it you will be disqualified from the event. 

If the rules do not say you can, then you can't.

If you THINK you can, you should probably ask.

We will not be responsible for transponder failures

Official's decision is final.

Tires:

This is a Spec Tire Race. All classes are on J Concepts Sprinter unless noted.

Tires and inserts must remain unaltered as they come from the factory. Jconcepts tires can have their tread ground down. Sidewall stiffeners are not allowed. A Main cars might have their tires cut open following the race for inspection. 

Batteries:

Cars will have to go through tech for voltage each round. Maximum voltage allowed is 8.44v. Racers who present vehicles at pre-race tech with a battery voltage up to 0.02v per cell over 8.44v will be given one opportunity to reduce the voltage or to replace the battery with one within the voltage limits. Racers must leave the inspection area and rejoin the inspection line while replacing batteries or reducing voltage. In no case will the start of a race be delayed due to a racer using this provision. Racers who present vehicles at pre-race technical inspection with a battery voltage greater than 0.02v per cell over 8.44v will be disqualified from that round of racing. Racers who use the option of reducing voltage or replacing the battery and fail on their second attempt will be disqualified from that round of racing.

SC MODIFIED: 

Must be a SC Based Chassis

Carbon fiber chassis allowed. Must meet the following specs. 

All suspension components, transmission, front and rear bulkheads must be on the center line of the vehicle. 

All larger volume OEM Chassis are legal IE “AE,TLR,Traxxas”

Aftermarket or specifically built chassis and kits must conform to the following specifications. 

Maximum Chassis width 7”

Minimum Chassis width 5 1/8” 

Maximum left side of chassis can be from centerline is 3 1/2”

Right side must be a minimum of  2.25” from centerline to the outside edge of the chassis.

Cages: Must represent a cage, no solid plastic cages, must be cut the same on both sides.

Minimum wheelbase 12.5”

Maximum wheelbase 13.5”

Shock bodies min length 1”

Front Track width Min  11.42”     

Front track width Max 11.65”          

Front Suspension arms must be equal size left and right

Rear Suspension arms must be equal size left and right

Adjustable Rear Suspension arms are allowed. 

Battery must be mounted on the centerline of the vehicle. Can be either designed front to back or sideways across the chassis but the center of battery must be on the centerline of the chassis. 

MOTORS: MODIFIED MOTOR

BATTERY:  2 Cell HARD CASE Lipos. VOLTAGE CHECKED IN TECH FOR 8.44VOLTS MAX.

NO GYROS OR DRIVING ASSIST DEVICES ALLOWED.

TIRES: 

J CONCEPTS SPRINTERS 

FRONT: #3128  INSERT #3237

REAR:   #3128  INSERT #3237

SC BODY RULES:

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, 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.

1/10 LATE MODEL:

DODC RULES APPLY  TO GO TO DIRT OVAL.COM FOR RULES

MOTOR and ESC: DODC Modified Motor Rules Apply

Any ESC is allowed in any mode.

BATTERY: 2 Cell HARD CASE Lipos. VOLTAGE CHECKED IN TECH FOR 8.44VOLTS MAX.

NO GYRO OR DRIVING DEVICES ALLOWED IN ANY CLASS.

TIRES: 

J CONCEPTS SPRINTERS

FRONT: #3134  INSERT #3231

REAR:   #3133  INSERT #3232

410 Sprint:

This is a pro level class, and is intended for those at the highest experience and skill level. 

DODC RULES APPLY- GO TO DIRT OVAL.COM FOR RULES

BATTERY: 2 Cell HARD CASE Lipos. VOLTAGE CHECKED IN TECH FOR 8.44VOLTS MAX.

MOTOR and ESC: DODC Modified Motor Rules Apply

Any ESC is allowed in any mode.

NO GYRO OR DRIVING DEVICE ALLOWED IN ANY CLASS.

TIRES:

J CONCEPTS SPRINTERS

FRONT: #3134  INSERT #3231

REAR:   #3133  INSERT #3232

360 SPRINT:

This is an intermediate level class, and is intended for those getting started or the casual hobbyist. 

DODC RULES APPLY- GO TO DIRT OVAL.COM FOR RULES

BATTERY: 2 Cell HARD CASE Lipos. VOLTAGE CHECKED IN TECH FOR 8.44VOLTS MAX.

MOTOR and ESC: DODC Modified Motor Rules Apply

Any ESC is allowed in any mode.

NO GYRO OR DRIVING DEVICE ALLOWED IN ANY CLASS.

TIRES:

J CONCEPTS SPRINTERS

FRONT: #3134  INSERT #3231

REAR:   #3133  INSERT #3232

1/10 EDM:

DODC 1/10 RUBBER TIRE LATEMODEL CHASSIS RULES APPLY GO TO DIRT OVAL.COM FOR RULES

Body rules:

All height measurements are from the bottom of the chassis unless otherwise noted.

Front bumper must be mounted flat and cannot be angled up to act as a wing. An additional front body panel is allowed on the front of the car but may not extend forward of the front bumper. Front and rear windows must be removed and any clear portion is included in max roof length dimension. Side windows must remain clear. No rear wheel cutouts are allowed on the horizontal plane of the inner. Right and Left rear wheel wells must be cut out to appropriate scale dimensions.

For dimensional specifications drawing  see Photo Album at www.facebook.com/NortheastNationals

· Must have 2 side panel braces as specified in drawing that must hold side panels at 90 degrees to inner panel both statically and during racing conditions.

· Must have rear roof spoiler Min 1/8" Max 1/4" Bend DOWN between 45 and 90 degrees

· Side door panels to be no longer than 15”    

· All fabricated body panels ie: Doors, Windows, Roof, and Inner Panel must be made from minimum .020" thick Lexan/polycarbonate material (.020" measurement does not include any decal or wrap)

· All Vacuum formed body panels must be pulled from minimum .030" thick Lexan/polycarbonate material. Separate hoods and front body panels may be pulled from .020" Lexan/polycarbonate material.

· Inner panel and spoiler cannot extend beyond rear of side panels

· Outer front edge of the inner panel cannot extend beyond the front of the door but may taper from that point forward of the door toward the hood at a point no more than 1.5" forward of the door.

· Inner panel must be flat (on 1 plane) from spoiler base to a point within 1.5" from front of door.

· Front edge of the door may have a round area cut out for wheel travel during compression of the suspension.

· Maximum length of complete car: 19.5"

· Both sides of body must be at 90 ° to the rear of body and or spoiler

· Door/side panel may have a 90 ° "BEND IN" max 3/8" at bottom for strength

· Maximum front bumper width: 5.0"

· Front body panel max width: 4.0"

· Front Body panel max chord length: 3.00"

· Max Side lip on front panel and Hood 1/4"

· Rear spoiler: max chord is 3.0" from body deck including any wickerbills

· The body is to be mounted the same distance from the centerline of the chassis to the side of the body front and rear.  The body can be offset but must be the same distance from the rear to centerline and the front to centerline.

· Bodies must have at least 1/3 of right rear tire exposed when viewed from front, top and rear of the car.

Inner panel must have a SCALE APPEARING hood that extends from at least the door leading edge to at least the leading edge of the roof. The following specifications are relative to the hood in the area defined in the previous sentence.

· Hood must be centered on inner panel

· Hood Width: Minimum 2.5"

· Minimum hood height for entire length is: .750"

· Clearance between top of hood and leading edge of roof is min. 1.0" and max 2

MOTOR and ESC: DODC Modified Motor Rules Apply

Any ESC is allowed in any mode.

BATTERY: 2 Cell HARD CASE Lipos. VOLTAGE CHECKED IN TECH FOR 8.44VOLTS MAX.

NO GYRO OR DRIVING DEVICES ALLOWED IN ANY CLASS.

TIRES: 

J CONCEPTS SPRINTERS

FRONT: #3134  INSERT #3231

REAR:   #3133  INSERT #3232

Midget

All height measurements are from bottom of chassis unless otherwise noted. 

General - Maximum Overall Length: 16.750". Maximum Chassis width: 4.2"  Maximum of 4 shocks can be used.  Solid axles are allowed.  If solid axles are used the rear axle must be square with centerline of the chassis and parallel to the front axle.  

Wheelbase- Min 9.5” Max 10.0”  

Width- Min 8.5” Max 10.0”

Rear Toe- Only non adjustable rear arms can be used.  Trackside toe adjustable rear hubs and or arms are not allowed.  Trackside adjustable wheelbase is not allowed (can’t have toe blocks or anything else attached to an easily adjustable mechanism to allow for wheelbase change trackside).  Left rear can be toed in via toe block.  Right rear can be toed in but can NOT be toed out.  

Offset-  Right side of the cage can be no further offset from the outside of the RR tire than 3.625”

Ballast Weight-  Brass, tungsten or steel hubs, arms, arm inserts, caster blocks, steering arms are not allowed.  Ballast weight can be attached to the main chassis area is allowed as long as it’s secured properly.  

Transmission – 3 gear transmissions only.  No DD, 2, 4 or 5 gear transmissions will be allowed.  All gears must be full gears.  No narrowed or lightened gears allowed.  Plastic, Aluminum and Steel gears are permitted.  Steel outdrives only.  Blades are permitted.   No gear diffs allowed.   No rear motor cars allowed unless you can do it in a manner that the tail tank is appropriately sized and located.  

Solid Axle Option-  If a solid rear axle design is used it, the motor must be mounted to the chassis and cva/cvd must be used to drive the rear axle.  No belts or chains will be allowed.  A spur gear and pinion must be used in conjunction with the motor plate mounted to the chassis.  

CVA/CVD- Dog bones must be equal length.  Axles and bones must be made from steel.  No aluminum, titanium or magnesium axles or bones allowed.   

Speed Controller -  Hobbywing Justock Speed controller # 30112003

Motor – Hobbywing 13.5T Justock #30408010          

Battery -  2S hard case lipo     

Cage – Must have a scale appearing contemporary cage made out of rounded stock. The cage must be symmetrical left to right and mounted level to the chassis. Unrealistic shaped cages designed to exploit the rules below are not permitted. Maximum cage width at driver halo, down tubes, and top frame rail: 3.600". Minimum cage height is 6.00” while maximum cage height 6.25" from top of chassis to top of cage at highest point. Rear “down tubes” must slant forward. All cage and body components such as cage, bumpers, nerf bars, hoods, side panels, tanks, etc. must be mounted on the centerline of the cage. Chassis may not extend outside of the side panels by more than 1/4" on either side. 

Bumpers – A tubular front bumper must be used and may not be designed to direct air or create downforce. Maximum height of front bumper is 1.5” from the bottom of the lowest point of the chassis. Scale appearing side nerf bars must be used on both sides of the car.  A scale appearing rear hoop style bumper must be used. Bumpers and nerf bars must be made of rounded stock with no sharp edges. 

Tail tank – A traditional scale appearing rounded style three dimensional rear fuel cell must be used.  A rectangle (Swindell) style rear tank is allowed but must have a proper style rear bumper to go with it.  You can not simply have a flat tail section with no bumper.

Headers - Three dimensional scale appearing headers must be used on the left side of car in “engine area”.  Material must be plastic or aluminum.  Not allowed to make inserts for these to add ballast weight.

Side panels – Flat side panels may be made from molded or fabricated polycarbonate. Maximum height of side panels in front of the driver cockpit is 4.50” from the bottom of the chassis. Must have minimum of 1/2" high by 2.5" long openings on both sides of cage in driver compartment. Additional material may be used/added to either side of the side panel openings to replicate a scale appearing driver but may not exceed 1" x 1". Side panels may not extend beyond the cage by more than 0.25”.  Side Panels may not extend into the area that is behind the rear axle AND below the top of the rear nerf bar. Scale appearing driver arm guards and engine vents may be used but cannot extend more than 3/8" from the side panels. No other flares or turnouts designed to deflect, trap and/or form a pattern for air to travel in a directed manner are permitted except for those used to cool electronics.

Hood – A scale appearing hood must be used and is defined as beginning at the point where torsion tubes or cross brace would be on a 1:1 car behind the front bumper.  The hood must be tall enough and wide enough to allow room for a scale engine intake and air cleaners (no unrealistically low or flat hoods). Minimum vertical gap from top of hood to bottom of front cage crossbar.

Nose Area – No molded or fabricated nose piece may be used and is defined from the torsion tube or cross brace would be on a 1:1 car.  You can not have anything below that point that is on the same plane as the hood.  No scoops or bodywork allowed in this area.  You can have side panels along the front of the cage but the can not stick past the cage sides.

Tires: TBD

MUDBOSS

- Salvas MudBoss or Clone Bodies Must Appear to be a Salvas Clone from 5’ Away.  Molded bodies are allowed.

- No roof spoilers

- Any minor modification to the body must be approved before being allowed

Chassis 

- TRAXXAS 2wd (SLASH or RAPTOR) chassis only 

- Original MFG suspension parts only, no other parts allowed (such as from RPM)

- Original MFG chassis parts only, no aftermarket hop-ups, no optional aluminium parts 

- Front bumper, right side bumper and front body post brace must be removed

- Left side and rear bumpers can also be removed (if desired) **rear RPM bumper is allowed**

- TRAXXAS front optional bumper (TRA2735) can be used (angled down)

- Major alterations to the chassis or modification to drivetrain/suspension components is not allowed 

- Electronics (rx/esc/amb) must be installed within chassis surface (no outside installation) 

- Battery brace can be trimmed to allow different LiPo battery wire configuration 

Electronics

- Original TRAXXAS 2075 servo

- TRAXXAS 2075x (servo) AND TRAXXAS 2072x (gears) are allowed as ‘alternative’ parts/servo 

- The “SAVOX SC-0252MG Digital Servo” is allowed, this is an ‘alternative’ servo 

- SAVOX gear set (SAVSGSC0251MG) can be used to ‘upgrade’ the TRAXXAS 2075 to metal gears 

- it is allowed to 'pin' the servo saver(white) or bell crank(black)...be advised the servo gears might get broken under a heavy crash!!!

- original TRAXXAS plastic servo saver/bell crank only (white or black system) it is allowed to mix the components (ie.. black servo horn with white bell crank) 

- It is allowed to use a solid (one piece) servo horn (any brand) 

- 2-cell 7.4v LiPo battery with a maximum of 5200mah and 50c, with external plug only (no “bullet type” connector) 

Adjustments

- TRAXXAS 76/83/86/90 spur with all transmission parts in place (slipper)

- Any pinion size 

- No modifications can be made to the transmission’s case (ie.. to allow a bigger gear ratio) 

- The gear cover must be off at all times to allow for visual inspection (CARPET)...and removed if asked (DIRT)

- The only adjustments allowed to the car are those allowed by the original MFG components of the car 

- You are allowed to use any original wheel spacer combination (Black, Grey or any combination of both types) 

- Transmission functionality rule (motor can not spin while turning slowly one rear wheel a full turn) 

- Traxxas SLASH *STEEL* transmission gears only (internal plastic transmission gears not allowed) 

- Adding weight (in any way) is not allowed, wheel balancing is allowed (sole purpose of balancing, not to add weight) 

Suspension

- TRAXXAS 2WD plastic shocks only (grey or black version) (fronts in front, rears in rear)

- Original Rear(TRAXXAS 5858) and Front springs (TRAXXAS 5857) (no LCG kit springs or aftermarket springs) 

- Front springs may be cut in order to shorten them (no more than 5 round removed on ONE end)

- The shock’s travel may be shortened with internal shims (ie..fuel tube or solid shims...) 

- Original shafts in original cylinder (length and type in proper cylinder) 

- Original pistons from kit only (original 1,2 or 3 hole), no modifications can be made to them 5.7 - No front bump stop suspension, a single original blue bump stop can be used per rear shock (not mandatory)

- No shimming allowed (to reduce slop in suspension parts)

- All suspension parts (such as A-Arms) must remain in original positions it was designed for (no swapping left to right) 

- rear camber links must remain in original height position (upper hole on shock tower not allowed)

STOCK MUDBOSS

- TRAXXAS SLASH or RAPTOR original chassis only (no LCG) 

- any original TRAXXAS SLASH rubber tire/wheel/inserts (BFG / KUMHO / SPEC) any wheel combination of the SAME TIRE TYPE (ie..4 fronts, 4 rears, 3 front 1 rear…) *NO “S1” compound* 

- NO Wintergreen prep allowed

- Tire surface must show “thread Pattern” (no slick tires)

- TRAXXAS 12t brushed motor AND XL5 esc ONLY (OEM motor connector only) 

-A single 30mm motor fan can be used 

- All other rules specified earlier in sections Chassis, Electronics, Adjustments, Suspension will stay the same 

13.5 MUDBOSS

- TRAXXAS Low CG chassis is allowed 

- PROLINE #10153 HOOSIER M3 or M4 with oem blue inserts (any SC wheel) 

- Tire surface must show “thread Pattern” (no slick tires) 

- NO Wintergreen prep allowed

- any ESC in BLINKY mode (ROAR approved) 

- ROAR legal 13.5 sensored brushless motor (Stock 13.5 / Spec) http://roarracing.com/approvals/print_brushlessmotors.php 

No Outlaw or Drag Motors 

- A single 30mm motor fan can be used 

- All other rules specified earlier in sections  Chassis, Electronics, Adjustments, Suspension will stay the same.

Any questions please contact us on the Facebook page for the event "Motorama Northeast Nationals" via private message.