Bumps and Jumps RC Speedway

 We all want to have fun – and the best way to do that is follow the rules!

All Drivers must first sign up before you are allowed to be on the track.

All Drivers must drive from the drivers stand

 General Rules - Offroad is 5-minute qualifiers, and 5-minute mains. Gas A mains are 15 minutes if there are more than 15 vehicles. If not 15 the A main will be 7 minutes.

Oval Races are all 4 minutes

Penalties will be issued for not being on the track to Marshall. Any car not on the tech table after there respective heat will be disqualified.

Offroad Gas cars will be started with the starting gate that will drop and allow all vehicles to go at the same time. All cars must be on the ground prior to the race. The only person allowed to be in front of the drivers stand is the person designated to drop the gate, you are not allowed to have someone hold your car up in the rear. The starting gate eliminates the need for this. Any car refueled on the racetrack will be disqualified.

All oval Cars are rolling starts. Electric Mains are also rolling starts.

No car will be driven at any time in reverse of the track traffic. If this occurs, a one-lap penalty will be deducted off the driver’s best time. The use of reverse is legal in the Traxxas slash class only.

Turn marshals may not work on or repair cars.

Unsportsmanlike driving (i.e. intentional hitting other cars, short coursing, and corner cutting) is not allowed. Any driver who deliberately takes out another driver and/or threatens to take out another driver will be disqualified.

It is the Drivers responsibility to bring the vehicle to the Tech table immediately following each race. Failure to do so will result disqualification.  

Any violation must be corrected BEFORE the car is raced. If a car passes through "Tech Inspection" and a technical illegality is over-looked, the vehicle is still illegal.  

Any racer may front $50 for tech inspection for any car on the track - if the car is found to be legal the $50 will be forfeited and given to the legal racer.

Vehicle Rules - Batteries: Only sub-C size Nimh or lipo's.  A maximum of 6 cells.

Stock Motors: Stock motors must be labeled 13.5

Mod Motors: This class is modified and therefore any 540 size can be run.

Tires: All tires must be factory available. All offroad cars are required to run a factory available tire that is specific to that scale car. i.e. No truck tires mounted on 1/8 scale rims.

Nitro Motors: All 1/10 scale vehicles are required to run a .15 or smaller unless that motor came with the kit. If your duratrax came with a .18 you can run it but you must run it in that kit. Monster trucks are limited to a .60 or smaller. 1/8 scales must also use a .32 or smaller.

Exhausts: Exhausts may not exceed 85 Dba. We have a sound meter available. All vehicles found to be in excess of 85 Db will not be allowed to compete. Stock systems are usually below this level. This means altered or homemade systems are usually to loud, and are not allowed.

Chassis: The underside of the vehicle may not have any sharp edges exposed; all screws not already recessed must be of button type. Cars must have a front bumper that is made of a shock absorbing material e.g. nylon, delrin, plastic, kydex etc. Front bumpers must be mounted in such a way that they will contact an object prior to any other portion of the car in a front impact. Brakes: All cars must have a braking system capable of slowing the vehicle to a complete stop

Clutches: All vehicles must have a clutch between the engine flywheel and vehicle drive gear

Throttle Return: In case of failure, vehicles must incorporate a return spring attached to the throttle arm.

Transmission:  A minimum of three internal gears and one spur gear in all offroad vehicles. The transmission must be enclosed on all sides by a factory-molded case. All oval vehicles must run at least one working differential.

Oval Vehicle Rules

We Use the DODC rules package which can be found here http://www.dirtoval.com/rules/index.html

General Rules
All races will be 4 minutes in length, qualifiers will use Ifmar starts. Turn marshals may not work on or repair cars. Any cars damaged and placed in the infield will remain there until that race is over. All drivers must turn marshal the race immediately following their race. All cars will be made available for tech inspection before and after race. Once a car has gone through tech before the race it must go directly to the track and not to pit area.

Limited Sprint and Limited Latemodel:  By entering and racing in this class you agree to the following. The engine in the car is the responsibility of the person driving the car. If you buy your motor from someone or borrow a car or motor from someone  and it is illegal you will be disqualified and subject to the items listed below. You agree to allow tech personnel to remove and disassemble your motor at any time and agree that bumps and jumps is not responsible for any damage that occurs even if caused carelessness. You agree that upon request you will immediately take the motor out of the car and completely tear it down to the bare block with bearings. You will do this directly in the presence of tech supervision. You also agree that if you refuse you will be assumed to be cheating and subject to the below consequence. You further agree that ANY motor modification  will be considered deliberate and you will suffer a lifetime ban of running any limited class in the future, in other words you would have to go run the open class, where you are allowed to grind a crank or rod.

If an item is not addressed in the rules listed here than you should assume it is not legal.

1/10th Scale 2wd Classes

All 2WD Classes: All entries must be 2wd and rear wheel drive only. For turn marshal safety all cars must have a front bumper that is made of a shock absorbing material e.g. nylon, delrin, plastic, kydex etc. Front bumpers must be mounted in such a way that they will contact an object prior to any other portion of the car in a front impact. All cars must have 4-wheel independent suspension. No straight axle cars allowed, single speed transmissions only. All EDM bodies, sprint car bodies and cages must resemble contemporary full scale cars racing in “World of Outlaws” and “DIRT” sanctioned events. All corners of bodies and wings must be rounded for safety. Race organizers will choose either foam or buggy tires at their discretion based on track surface. No silicone or rubber capped tires allowed.

• Wheelbase: 9.500” min, 11.500" max
• Maximum width: 10.000” (foam tires), 10.250" (rubber tires)
  

Stock and Limited Nitro Classes
Radio use is limited to 2 channels only i.e., no wings adjustable from radio, no front brakes allowed.

Tires
Foam tires or rubber tires may be used but must be readily available for purchase (no prototype tires) Tire additives that are used must be wiped clean from the tires before any races or practice sessions. No Grease, No Silicone or Silicone impregnated tires.

Foam Tires:
Max wheel diameter: 2.0”
Max wheel width: 1.385” rear, 1.000” front
Max tire width: 1.435” rear, 1.050” front

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

Late Models
Molded portion of body can be no longer than 22”. Late Model bodies may have openings for cylinder head, fuel tank access, glow plug, engine tuning, and exhaust outlets only. An under body support may be added to brace each rear quarter panel, but must hold it in stock position, can not be flared out. No additional wings, flaps, spoilers, wickers, vents or doohickeys will be allowed. Body may not be altered in any way from it’s stock configuration ie: shortened, lengthened, narrowed, flared fenders etc. Front and rear windows may be removed at trim lines but a flat lexan or similar material deck must be added in cockpit area. Bodies with add on roofs may leave front and rear windows in or out but roofs must be mounted in stock position.

• Rear Spoiler: maximum chord is 2.750" from body deck including any wickerbills.
• Rear Spoiler Cap: See Drawing
• No Side Dams

Sprint Cars
Must have scale appearing cage, hood, side panels, nerf bars and bumpers. Minimum of a 4 post cage required that resembles a drivers cockpit. A driver arm guard area is permitted on right side panel bust must be of reasonable size. All electronics, radio gear, fuel tanks must be positioned inside the cage side frames. Three dimensional scale appearing exhaust headers must appear on both sides of car in “engine area” and be made of round stock or molded polycarbonate (left side of nitro sprint is optional). Rear cage side panels may be used but may not extend beyond rear cage frame. No lexan or any other material may be mounted to nerf bars, bumpers, cage, wing or any other part of the car that will trap, alter, or direct air flow for the purpose of gaining an aerodynamic advantage. Must have appropriate openings on both sides of cage in driver compartment, forward portion of side panels can be no taller than highest point of hood, no solid side panels.

• Maximum Length: 18.000"
• Maximum width of hood: (3.600")
• Maximum cage width at driver halo, down tubes, and top frame rail: 3.600"
• Minimum vertical gap from top of hood to front cage crossbar: .750"
• Wing minimum height at leading edge: 5.000" from bottom of chassis

Wings: must be made from at least 3 separate pieces of polycarbonate or lexan material, no one piece wings. (for the freeze only Main and Front wings must be mounted so that they are centered on cage, no offset wings.) Wing center sections must have all 4 corners set at 90 degree angles, no canted or angled panels. Wings must also be mounted level from side to side. Center section of wing may not extend beyond leading or trailing edge of side panels. Side panels must have braces that hold side panel rigid at 90deg. to center section during race conditions. Two braces are required from top of the center foil to the left sideboard and one brace is permitted below the center foil to the right side board. Braces can be a maximum of .750" wide and front edge of front brace must be no more than 1.5” back from side panel leading edge. Side Panels may have front, back, top and bottom turnouts of no more than .375" and are included in max dimension. Flat foil center sections will be allowed a .250” turndown at the leading edge.

The 6x6" wing will be the standard Sprint Car wing size.

6x6" Foam Tire Wing: See Drawing

• Wing center section: 6x6” (see drawing TBA)
• Front wing center section: 8 sq. in. max (see drawing TBA)

Limited and Stock sprint: No front wings allowed.

Wingless Sprints - no wings front or rear.

Eastern Dirt Modified (EDM)
Inner panel must have hood that extends from front of inner panel to at least the leading edge of the roof. Front bumper must be mounted flat and can not 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 and A pillars must attach to side panels at top edge of door and must also contact entire length of roof (i.e. no large gaps between roof and top of windows, no T-tops). Roof width must be at least .500" narrower than inner panel max width dimension. Side windows must remain clear and no portions of side window may be removed or overlap side or sail panel. Roof, windows, side and sail panels must be symmetrical. Front edge of Door/side panel may not extend past the centerline of the front axle with wheels straight. Front of sail panel may be no more than 1” forward of rear tire leading edge and can not overlap side windows. No additional lips or flaps are allowed with the exception of a .250" bend at top and bottom of side and sail panel. Reasonable size and quantities of braces are allowed if desired. Bodies must have at least 1/3 of right rear tire exposed when viewed from front, top and rear of car. No rear wheel cutouts are allowed on the horizontal plane of the inner panel.

• Maximum length: 22.000"
• Maximum width of inner panel: 8.000"
• Minimum hood width: 2.000"
• Minimum hood height: .750"
• Maximum front bumper width: 5.000"
• Front body panel max width: 4.500"
• Front body panel max chord length: 3.500"
• Max roof width: 7.000"
• Minimum roof height: 5.000" from bottom of chassis
• Maximum height of body at highest point: 7.000" from bottom of chassis
• Maximum roof length: 6.500" plus additional .500” rear spoiler allowed on roof
• Maximum side panel length: 17.000"
• Rear spoiler: max chord is 3.125" from body deck including any wickerbills

Electric Class Rules

All cars must run 2-cell lipo pack. 13.5 motor may be used along with any 2-cell lipo. 13.5 motors may not measure lower than 19.2 micro henrys. Racer is responsible for removal of motor and disassembly of can for measurements. Mod is any 2 cell lipo and any motor brushless or brushed. 

• Modified: All motor systems must meet ROAR Brushless specification with the exception of the MAMBA MAX system from Caslte Creations which will also be legal for modified. Sensored or sensorless speed controls are allowed. Batteries must use a quick release hobby grade connector for connection to the ESC ie:sermos, deans, traxxas.

13.5 Spec: DirtOval.com SPEC 13.5 MOTORS or any 13.5 novak can and DirtOval.com SPEC Li-Po 3200mah batteries are the only motors and batteries legal for this class. Sensored speed controls only.

All racers shall take every precaution to insure safe charging and discharging techniques with their batteries. This shall include but is not limited to, attentive monitoring of battery during charging and use of a proper charging container i.e., LiPo sack. To insure safe charging methods are followed by all competitors, all batteries will be checked prior to each race to ensure battery voltage is a maximum of 8.44 volts or less. If the battery reads 8.45 or more you do not race. Battery and motor temperature will also be checked with the following pre-race procedure. A control pack and motor will be placed in the tech area for the purpose of monitoring the pack temperature. Checked batteries and motors shall be no more than 10° F above or below the temp of the control pack or motor. No Freezing Cans.

Weights (including transponder)
Sprint Car: minimum weight is 52oz.
EDM and Late Model: minimum weight is 50 oz.

Nitro Class Rules

All classes: Maximum fuel tank size is 75cc. No stinger modifications and no pipes with adjustable stingers allowed. Effective immediately all vehicles will use a stock flywheel made by a major manufacturer, no modifications are allowed, no homemade or carbon flywheels. This is for the safety of all racers and turnmarshals.

• Limited: O.S. Max 12TG Production motors only. Must be out of the box STOCK. No modifications allowed. Rotary or Slide carb version ok. Production headers and pipes only with max 6mm stinger opening.
  
  
• Open: Any .12 cubic inch engine. Un-modified .15 Rtr engines may be used.

Weights (including transponder and fuel)
Minimum weight is 56 oz. 

GAS TRUCK

Traxxas Slash Rules

Offroad Vehicle Rules  

Monster Truck Scale - 1/10-1/8
RC Pro Series Rules

Truggy Class  Scale - 1/10-1/8
RC Pro Series Rules

1/8 FUEL OFF-ROAD SPECS
RC Pro Series Rules

1/10 FUEL 2WD OFF-ROAD TRUCK SPECS

Roar rules apply
 

1/10 Electric Buggy

Roar rules apply

Traxxas Slash Spec and Pro Spec Rules

Mod CORR Truck Rules: Same as above with the following allowed upgrades