Bumps and Jumps RC Speedway

www.bumpsandjumpsrc.com



 

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

Five laps will be deducted off your best time for not returning your transponder and taking your vehicle to tech.

More than anything I want this to be a fun place to race and I believe the only way that happens is by enforcing the rules.

Offroad we run 5 minute qualifiers, and 5 minute mains. Gas truck A mains are 15 minutes provided there are more than 15 vehicles. If there are not 15 vehicles in that class 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, and the driver will be assessed a penalty of 5 laps off there best time, to start the main.
Make sure you are ready to start your vehicle and are ready to go 2 minutes after the previous race starts, if you run a gas car and know you have difficulty getting it started then start it early with the radio off!
Offroad Gas car mains 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. All Gas cars requiring a pit stop must pit on the concrete in the starting area. Any car refueled on the race track 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, however if you back up into an oncoming car a one lap penalty will be assessed.

Repairs must be done out of the way of traffic, not on the racing surface. A car may be repaired and returned to the track. A car running on the track has the right of way over a car returning to the track.

Unsportsmanlike driving (i.e. intentional hitting other cars, short coursing, and corner cutting) is not allowed. Abusive language by a driver to a turn marshal or any other racer will not be tolerated. Any driver who deliberately takes out another driver and/or threatens to take out another driver will have there vehicle removed from the track.

TECH - It is the Drivers responsibility to bring the vehicle to the Tech table and remove the transponder immediately following each race. Failure to do so will result in a loss of five laps. Cars may be inspected immediately after respective races, if a driver takes their car back to the pit area before being inspected, the car will be disqualified.  

All rules must be strictly adhered to. Any violation must be corrected BEFORE the car is raced. It is the responsibility of the racer to insure their car meets all technical requirements. If a car passes through "Tech Inspection" and a technical illegality is over-looked, the vehicle is still illegal.

Batteries: Only sub-C size batteries shall be used. Only Ni-Mh or NiCd cells - no milliamp limit, 2 cell li-po's are allowed in mod class only. All classes will be allowed to run a maximum of 6 cells.
Stock Motors: Stock motors must be stamped ROAR or 27 on the end bell, and tagged 27 on the armature.  turn allowed on 1 of 3 poles). Motors that show any sign of tampering will be disqualified.
Mod Motors: Modified class it is legal to run brushless motors.
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. Single outlet pipes only - no dual stingers or moving chambered pipes. Stock systems are usually below this level. This means altered or homemade systems are usually to loud, and are not allowed.
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:  Offroad cars must have a minimum of three internal gears and one spur gear. The transmission must be enclosed on all sides by a molded case. All oval vehicles must run at least one working differential.  
Body’s: Front, rear, and side windows may be completely removed. Additional holes may be cut directly above Engine Head, Needle Valve and Fuel tank lid. Holes may not exceed 1/2" diameter larger than each component.

 

OFFROAD CLASSES

Monster Truck To be a 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"). To tech questionable MTs, remove the wheels, place MT on flat surface, compress the vehicle fully and a ruler (or 1.5" gauge) could be used vertically to measure the engine above the surface. No flat chassis (1/8 buggy style). The following trucks are examples that fit within the above definition: T (and S) -Maxxes, Savage, MGT, Revo, TNX/TC, and LST providing no modifications have been made to make the vehicle not meet the Monster Truck rules.
Electric Monster Truck conforming to the rules of this class will be allowed to participate. That means they must meet the minimum weight. Electric trucks must make pit stops during mains. The appropriate number to be determined at each event which will be equal to the majority of the stops required by the nitro powered truck.
4 Stroke motors are legal. See the sizing chart below. Deisel fuel conversions are legal but must conform to the engine, Db and fuel capacity rules. Wheel base Minimum 12 inches - Maximum 16 inches Vehicle width maximum outside tire to outside tire 19.5 inches.
Transmission Must be gear reduction. Diffs inside the transmission are allowed only. Front and rear brakes allowed. Engine - 12ci to .28c Minimum weight - .12ci to .21ci Small blocks: 7lbs. 6 oz.minimum weight. .21 to .28 Big blocks: 4300 grams (~9.5 pounds) minimum weight Maximum  - 13 pounds 6 ounces Wheels - Must be manufactured for Monster Trucks Tires Must be rubber only. 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 by sectioning or narrowing is prohibited. Due to the varying sizes of wheels available for Monster Trucks it IS legal to trim the mounting bead of a tire produced for the Monster Truck class to make it fit a Monster Truck rim. Example - Bowtie on a REVO wheel. All tire measurements reference the carcass dimensions and does not include the tread depth or width. Tire  - diameter Minimum - 5.1" (mounted) Tire width - Minimum - 2.75"(mounted)


Truggy Class  Scale - 1/10-1/8
Any Monster Truck that does not 100% meet the MONSTER TRUCK specifications while still meeting the below guidelines will run in the Arena Truck Class. Wheel base Minimum 12 inches -- Maximum 16 inches Vehicle width maximum - outside tire to outside tire - 19.5 inches Transmission/diff - Single speed direct drive (1/8 buggy) style driveline only. Engine - .12ci to .32ci Minimum weight -  7lbs. 6 oz. minimum weight Maximum weight for safety  - 13 pounds 6 ounces Wheels -- Must be manufactured for Monster Trucks. Tires -Must be rubber only. 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 by sectioning or narrowing is prohibited. Due to the varying sizes of wheels available for Monster Trucks it IS legal to trim the mounting bead of a tire produced for the Monster Truck class to make it fit a Monster Truck rim. Example - Bowtie on a REVO wheel. All tire measurements reference the carcass dimensions and does not include the tread depth or width.
Tire - Diameter - Minimum - 4.55" (mounted) Tire width - Minimum - 2.25"(mounted)

1/10 Gas Truck 2WD All trucks must be 2wd. Maximum truck length - 18” - Maximum truck width - 13” Truck wheel base - Minimum - 9” Maximum - 11.5” Minimum Truck weight - 2WD - 60 ounces = 3lbs. 12oz. Truck wheel diameter - Minimum-mounting bead - 2.175” Maximum mounting bead 2.25" Maximum overall - 2.46” Fuel - Maximum allowed 75 milliliters/cc for the tank, filter's) and fuel line from tank to carb.


1/8 Buggy Maximum Buggy length - 28.74” (730mm) - Maximum Buggy width - 12.2” (310mm) Maximum Buggy height - 9.84” (250mm) Buggy wheel base - Minimum - 10.8” (270mm) Maximum - 13.2” (330mm) Minimum weight - 112.9 ounces (3.2 kilos) 7lbs .9 oz.
Wheel diameter - Minimum - 3.2” (81.28) Maximum - 3.4” (86.36mm) Maximum wheel width - 1.75” (44.45mm) Tire diameter - Minimum - 4.3” (109.22mm) Maximum - 4.7” (119.38mm) Maximum tire width - 1.85”  Engine - .32 max Fuel - Maximum 125 milliliters/cc includes tank, filter's) and fuel line. Notes - Maximum height is measured with suspension fully compressed.

1/10 scale 2wd Buggy (Mod) Maximum overall length 18 inches Maximum width 9.84 inches Maximum Wheelbase 11.49 inches Minimum Wheelbase 9.01 inches Minimum weight 52.88 ounces Wheel mounting bead diameter Maximum 2.19 inches Minimum 1.62 inches Wheel Diameter Maximum 2.42 inches Wheel width Maximum 1.5 inches Tires Rubber only Diameter  Max 3.54 Width - Max 1.74 Rear Wing Side dam  3.93 w X 1.96 h  Cord 3 inches Width 6.96 inches Transmission single speed only Suspension independent Body Off road Buggy style No trucks

 

1/10 Electric Buggy and 1/10 Electric Truck
roar rules apply


Oval Specifics

All cars must run 6 cell battery packs - 2 cell li-po packs allowed in mod only. All Gas and Electric Vehicles must use a factory available oval tire. The tire will be either foam or rubber and readily available. No Grease, silicone or silicone impregnated tires will be allowed. No touring car tires on the edm's and sprints - i.e.: no HPI slicks. All cars must have 4 wheel independent suspension. No straight axle cars allowed. All modified bodies, sprint car bodies and cages must resemble real full scale cars running on dirt or paved oval tracks. All corners of bodies and wings must be rounded for safety. All rules are at the discretionary interpretation of bumps and jumps rc speedway. All stock motors must be stamped roar XX, (epic 27, yok 27, etc.) and be roar approved. Radio use is limited to 2 channels only i.e.: no wings adjustable from radio, no driving assist aid devices (gyro's). No front brakes allowed. Sprint car minimum weight is 54oz. Edm minimum weight is 52 oz. - Nitro Rules: Sprint, EDM, and Latemodel .12 cubic inch engines only. No stinger modifications and no pipes with adjustable stingers allowed. Single speed transmissions only. Minimum weight is 56oz. All height measurements are from bottom of chassis unless otherwise noted.

  All rules are simply copied and pasted from the custom works open wheel nationals the only 2 changes are that we allow the late model body to be tunneled and we allow the car's to be 10.5" wide. So if you have a question refer to those rules which can be found here or ask - please don't just try and squeak by if you are in doubt.

- Limited Sprint and Limited Latemodel: OS .12 TG production motors only. Any glow plug but only one copper washer. Must be out of the box stock. No modifications allowed. Rotary or slide carb version ok. Production headers and pipes only with maximum  6 mm diameter single stinger opening. Must be production based kit manufactured and available for purchase to general public. IE: Associated GT-2 conversions, Custom Works, BMS, Dynotech, Klein, Bulletproof, Putnam, Kranzel, OFF etc. Modifications and optional parts are ok, but no scratch built or protype cars are allowed. Radio use is limited to 2 channels only i.e.: no wings adjustable from radio. Special Note Regarding the limited Classes - 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 me to remove and disassemble your motor at any time and agree that I am not responsible for any damage that occurs even if caused by my 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 are required to bring all tools necessary for the removal and tear down of the engine to the tech area. 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. 

Slider: Unless it is specifically listed below any modification is illegal

Factory Body only Wing must be stock and in stock configuration. The drivers helmet can be cut  to allow for cooling, you can also cut the hood so it is easier to install and remove the hood  oz minimum for electric Factory Tires Only - Inserts may be changed along with losi rims. Stock 280 or associated 370 motor can be used. Any unmatched nimh or nicd Battery can be used but must not exceed $25 retail (not suggested retail) and must be a stick pack, no square or stacked batteries. Claim rule is in effect and if you would like to buy someone's battery they must sell it at the $25 price. The following are permitted upgrades, If it is not specifically listed below it must be stock and in stock configuration. Losi Cvd's, aftermarket shocks, any turnbuckle and ballcup/captured ends may be used. Any radio or stock type replacement esc may be used, any plugs may be changed or eliminated. The fluids may be changed and the shocks can have limiters inserted. The gearing may be changed but must be a spur and pinion gear size that is made by losi (max is 17t), aftermarket metal pinions are allowed, and the hinge pins can be shimmed to   eliminate slop. No other upgrades/modifications are allowed i.e. no drilling the chassis, moving the wing mounts on the wing, cutting the rear of the tail away ect. Transmission must be stock but a ball diff is allowed

Truck: Any truck body 54 oz minimum for electric - 64 oz minimum for gas (with fuel) 2 inch maximum. The McAllister body is legal,  but may not be modified. Tire must be rubber or foam and readily available  Minimum tire width is 2"  Any .15 sized motor or smaller Side air dam can be from the rear of the cab to the rear wing and may not be higher than 1" above  the roof line Minimum 10" Maximum 12", Minimum width 11.5" Maximum width 13" Long truck arms only - this applies to electric vehicles also Transmission must be a production one, aftermarket cases are allowed but must retain same basic design

Touring Car: Any 1/10 scale 4wd touring car chassis  Must use a dirt late model style body no wider than 210 mm  No side dams or air dams allowed 2" maximum Tire must be rubber or foam and  readily available. Any .15 or smaller No two speed transmissions 52 oz minimum weight

When reading rules below it is a good thing to realize that chances are if it is not mentioned here, it is not legal. Do not plan a defense of your latest concoction by saying "it doesn't say I can't do it". Save yourself and everyone else a lot of time by being realistic in what is expected and in the spirit of the rules.

Latemodel: Latemodel bodies may have openings for cylinder head, fuel tank access, glow plug, engine tuning, and exhaust outlets only. Maximum track width is 10.5". Maximum rear spoiler chord is 2"including any molded in portion. A 1/4" wicker is allowed on top of spoiler in addition to the 2". A left side dam will be allowed with the following dimensions: Max length 14", max height is 2.5" above deck plus a 1/2" bend at top. Side dam leading edge must be at least 3" behind center of front axle with wheels straight. Leading Edge must be perpendicular or angle back (can not angle forward). Also side dam must be mounted and braced securely at a 90 degree angle with at least 2 rigid braces. No flopping side dams allowed. A right side spoiler cap or side dam is allowed and can be no longer than 2" forward of spoiler base and no taller than top of spoiler. No additional wings, spoilers, wickers, flaps, vents, doohickeys etc. can be added to body other than what is specifically mentioned above. The body may not be altered in anyway from its stock configuration ie: shortened, lengthened, narrowed etc.  You may remove front and rear windows completely and attach a lexan tunnel. Reasonable modification may be permitted to allow for cylinder head cooling only. The following bodies are the only bodies that are approved for use in the latemodel class. Custom Works #9005  Pro Lumina, McAllister  #207 Tulsa, BMS Racing  Shadow, Custom Works #9006 Pro-Mod T-Bird, McAllister #237 Bakersfield Custom Works #9012 Eldora roof stock, Factory Works  #7357 Concord,  Factory Works #7353 Rocket Late Model

Limited Latemodel: Same as above with the following exceptions: Maximum rear spoiler chord is 3"including any molded in portion. A 1/4" wicker is allowed on top of spoiler in addition to the 3". NO SIDE DAMS ALLOWED EXCEPT: A left and right side spoiler cap or side dam is allowed and can be no longer than 2" forward of spoiler base and no taller than top of spoiler.

Sprint: Maximum Length is 18" . Must have scale appearing cage, hood, side panels, nerf bars, and bumpers. 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). Must run top wing - maximum wing surface area is 6" X 6" plus a 1/2" max rear spoiler, wing center section must be square, no canted leading edges. Left side panel max 4" x 7" max., right side panel 3.25" x 7". A 1/4" bend is allowed on top and bottom of wing side panels but is included in max dimensions. A 3/8" max wickerbill is allowed on rear edge of wing side panels. Wing minimum height at leading edge 5" from bottom of chassis. Front wing maximum surface area is 8 square inches with max side panels of 3" long and 1.5 " high, max of 1"above horizontal wing surface. Rear cage side panels may be used but can not extend beyond cage frame. Maximum front bumper width is 4". No lexan or any other material may be mounted to nerf bars or bumpers that may assist as an aero device.

Limited Sprint: Same as above with the following exceptions: No Front Wings allowed. All body pieces ie: hood, tail, side panels, must be stock production pieces available from manufacturer. No additional panels or pieces are permitted.

Eastern Dirt Modifieds (EDM): Maximum Overall Length is 22". Maximum width of Body/inner panel is 8". Inner panel must have a hood at least 2" wide that extends from front of inner panel to at least the leading edge of the roof and must be a minimum of 1/2" above inner panel. Maximum front bumper width is 5", must be mounted flat and may 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 past the bumper and may not be wider than 4.5" or longer than 3.5". Maximum width of Roof is 7", roof width must be at least .5" narrower than inner panel width where attached to doors. Minimum roof height is 5.0", maximum Height of body at highest point is 7.0". Maximum roof length is 6.5 inches,. a 1/2" rear spoiler is allowed on Roof and is not included in 6.5" max length restriction. Front and Rear windows must be removed, any clear portion is included in max roof length dimension. Side windows and A pillar must attach to side panels at top edge of door and must also contact the entire length of roof. (ie no large gap between roof and top of windows) Side windows must be clear and no portion of side window may overlap side or sail panel. Roof, windows, side and sail panels must be symmetrical. Maximum Side panel length is 17" and no part of the side panels can extend forward of the front axle. Entire side panel must be on one plane and both side panels must be parallel to each other. Front edge of sail panel can not extend 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 1/4" bend at top and bottom of Side and Sail panel no more than 45 degree. Any material added for the purpose of bracing or supporting the body must be a maximum of 1/2" wide and 5 " long. Bodies must have at least 1/3 of right rear tires exposed when viewed from front, top and rear of car. Rear spoiler chord maximum is 3". No rear wheel cutouts are allowed on the horizontal plane of the inner panel.