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| Florida Dirt Oval Series |
General Rules & Regulations
Race Hosts should make all persons aware of locations of fire extinguishers, First Aid kits and
Emergency phone access.
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 another portion of the car in a front impact.
All bodies must resemble real full scale race cars running on dirt.
No silicone, silicone impregnated or rubber capped tires will be allowed.
Protests must be submitted in writing, include a $20 fee for each protested item. Protests
regarding engines/motors may involve tear down if required or requested for inspection and
the retail cost of items shall be provided by protestor. Teardowns will be done at the end of
all racing. Engines and Motors will be marked for identification purposes at time of protest.
All protested vehicles will be impounded immediately after their final race until inspection.
Drivers failing to release vehicles for inspection will be disqualified. During qualifying, only
racers in the same class may file protests. During Mains only racers in the same Main may file
protests.
The final decision regarding rule enforcement is at the discretion of the race director. Good
faith is expected of all parties involved to keep within the essence of the rules.
Nitro Classes
Nitro Outlaw Sprint:
Body: Any outlaw with wing.
Nose Wing: Optional.
Front Bumper Width: 6" maximum.
Wheelbase: 9" to 12.5"
Maximum Width: 12.5"
Engine Limit: Any .12 - .18 engine
Tank Size: 75cc only. (no insert required)
Transmission: Single speed belt or gear tranny. (No 4WD)
Minimum Weight: 56 oz.
Tires: Front tires must be buggy tires. Rear tires can be truck or buggy.
Center Wing: 7.5" x 8" maximum.
Right Side Panel: 4" x 8" maximum.
Left Side Panel: 5" x 8" maximum.
No other side panels or spoilers are allowed.
Tube, wire, plastic or aluminum cages.
Nitro Edm/Truck Small Block (Truck Based):
Body: EDM -Must resemble a real Dirt Modified car running on dirt.
Body: Truck - Any offroad or oval truck body
Front Bumper Width: 6" maximum.
Wheelbase: 9" to 11.5"
Maximum Width: 13"
Maximum Length: 22"
Engine Limit: Any 3-port .12 - .18 engine
Tank Size: 75cc only. (no insert required)
Transmission: 2WD gearbox.
Minimum Weight: 54 oz.
Tires: Any 2.2 tire.
Spoilers: 1.5" Maximum rear spoiler on EDM.
Side panels: Not to be higher than roof of EDM. Not to be higher than roof of truck and no
further forward than back of cab.
No front wings allowed.
EDM bodies must leave front tires completely exposed and the rear tires at least 1/3 exposed.
No wheel cutouts are allowed on the horizontal plane of the deck area of EDM bodies.
EDM nerf bars and rear bumpers are optional
Nitro Latemodels(4wd Or 2wd Permitted):
Body: Body must resemble a full scale late model body.
Front Bumper Width: Bumper can be up to 1/2" wider than the front track width.
Wheelbase: 10.25" to 11"
Maximum Width: 10.25"
Engine Limit: Any .12 - .18 engine.
Tank Size: 75cc only. (no insert required)
Transmission: any production 200mm transmission or production 1/10 buggy/truck
transmission.
Minimum Weight: 56 oz.
Tires: No silicone tires allowed.
Sidedam: 6" x 15" maximum must be mounted on the left side of the body, and can be
mounted no further forward than the edge of the front wheel well
Rear Spoiler - max 1.5" tall
No other side panels or spoilers are allowed.
Electric Classes
Electric powered cars are limited to 6 cell sub-C NiMH or NiCd Battery packs rated at 3800
mAh or lower. LiPo battery packs are not allowed. Sub-divisions of these classes will be by
Motor Type – Stock Or Modified. Stock motors shall conform to industry size standards, be
commercially available and be limited to 24 degrees of timing, have a minimum 64 inches
of 22 AWG round wire Mabuchi cross wrapped for 27 continuous turns of wire per pole.
Modified motors shall conform to industry size standards. Brushless motors will be allowed
in Modified motor classes only.
Sprints:
Body: Must have scale appearing cage, nerf bars, and bumpers made of round stock. Exhaust
headers must appear on both sides of car in "engine area" and be made of round stock or
molded polycarbonate. Must appear 1/10th scale.
Front Bumper Width: Maximum 4”
Wheelbase: 9” – 11.5”
Maximum Width: 10”
Maximum Length: 18”
Transmission: 2WD 3 gear reduction or direct drive
Minimum Weight: 50 oz.
Tires:
Wheels: max width 1.75” (buggy tires)
Wings: Must run top wing, maximum surface area is 6” x 6”, left side 4” x 7” max, right side
3.25” x 7”. Wing minimum height at leading edge 5.5" from ground. Front wing maximum
surface area is 8 square inches.
Truck:
Body: Any truck body
Front Bumper Width: Maximum 4”
Wheelbase: 9” – 11.5”
Maximum Width: 13”
Maximum Length:
Transmission: 2WD 3 gear reduction
Minimum Weight: 54 oz.
Wheel: Minimum diameter is 2.2". minimum wheel width is 1.8”
Tires:
Spoilers: Maximum of 1" rear spoiler allowed, Must be mounted to rear of deck lid only.
Side Dams: no higher than the top of the truck roof.
Eastern Dirt Modifieds (EDM):
Body: Modified bodies must leave front tires completely exposed and the rear tires at least
1/3 exposed. No wheel cutouts are allowed on the horizontal plane of the deck area of
modified bodies. Modified nerf bars and rear bumpers are optional. No front wings allowed.
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 degrees.
Front Bumper Width: Maximum 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"
Wheelbase: 9” – 11.5”
Maximum Width: 10”
Maximum Length: 22”
Maximum Roof Height: 7.5” at highest point not including spoiler
Maximum Body Height: 7.5” (at ride height). 1/2" spoiler allowed on Roof but is included
in 7.5" max. - Max Body Height will not be enforced this year but is a reference for those
who wish to race at large events where it is.
Rear Spoiler Chord: Maximum 3”
Maximum Side/Sail Panel length: 17” – Side panels cannot extend in front of front axle.
Transmission: 2WD 3 gear reduction
Minimum Weight: 50 oz.
Wheel: Maximum width 1.75” (buggy tires)
Tires:
4WD Late Model:
Body: Late Model
Wheelbase: 9” – 11.5”
Maximum Width:
Maximum Length: 19”
Rear Spoiler: max 1.5” high
Maximum Side Dam:
Wheel: w/ Foam tires Max width is 1.18” (30mm), w/ Rubber tires Max width is 1.75”
Tires:
For more information, visit the Florida Dirt Oval Series website.
Race Hosts should make all persons aware of locations of fire extinguishers, First Aid kits and
Emergency phone access.
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 another portion of the car in a front impact.
All bodies must resemble real full scale race cars running on dirt.
No silicone, silicone impregnated or rubber capped tires will be allowed.
Protests must be submitted in writing, include a $20 fee for each protested item. Protests
regarding engines/motors may involve tear down if required or requested for inspection and
the retail cost of items shall be provided by protestor. Teardowns will be done at the end of
all racing. Engines and Motors will be marked for identification purposes at time of protest.
All protested vehicles will be impounded immediately after their final race until inspection.
Drivers failing to release vehicles for inspection will be disqualified. During qualifying, only
racers in the same class may file protests. During Mains only racers in the same Main may file
protests.
The final decision regarding rule enforcement is at the discretion of the race director. Good
faith is expected of all parties involved to keep within the essence of the rules.
Nitro Classes
Nitro Outlaw Sprint:
Body: Any outlaw with wing.
Nose Wing: Optional.
Front Bumper Width: 6" maximum.
Wheelbase: 9" to 12.5"
Maximum Width: 12.5"
Engine Limit: Any .12 - .18 engine
Tank Size: 75cc only. (no insert required)
Transmission: Single speed belt or gear tranny. (No 4WD)
Minimum Weight: 56 oz.
Tires: Front tires must be buggy tires. Rear tires can be truck or buggy.
Center Wing: 7.5" x 8" maximum.
Right Side Panel: 4" x 8" maximum.
Left Side Panel: 5" x 8" maximum.
No other side panels or spoilers are allowed.
Tube, wire, plastic or aluminum cages.
Nitro Edm/Truck Small Block (Truck Based):
Body: EDM -Must resemble a real Dirt Modified car running on dirt.
Body: Truck - Any offroad or oval truck body
Front Bumper Width: 6" maximum.
Wheelbase: 9" to 11.5"
Maximum Width: 13"
Maximum Length: 22"
Engine Limit: Any 3-port .12 - .18 engine
Tank Size: 75cc only. (no insert required)
Transmission: 2WD gearbox.
Minimum Weight: 54 oz.
Tires: Any 2.2 tire.
Spoilers: 1.5" Maximum rear spoiler on EDM.
Side panels: Not to be higher than roof of EDM. Not to be higher than roof of truck and no
further forward than back of cab.
No front wings allowed.
EDM bodies must leave front tires completely exposed and the rear tires at least 1/3 exposed.
No wheel cutouts are allowed on the horizontal plane of the deck area of EDM bodies.
EDM nerf bars and rear bumpers are optional
Nitro Latemodels(4wd Or 2wd Permitted):
Body: Body must resemble a full scale late model body.
Front Bumper Width: Bumper can be up to 1/2" wider than the front track width.
Wheelbase: 10.25" to 11"
Maximum Width: 10.25"
Engine Limit: Any .12 - .18 engine.
Tank Size: 75cc only. (no insert required)
Transmission: any production 200mm transmission or production 1/10 buggy/truck
transmission.
Minimum Weight: 56 oz.
Tires: No silicone tires allowed.
Sidedam: 6" x 15" maximum must be mounted on the left side of the body, and can be
mounted no further forward than the edge of the front wheel well
Rear Spoiler - max 1.5" tall
No other side panels or spoilers are allowed.
Electric Classes
Electric powered cars are limited to 6 cell sub-C NiMH or NiCd Battery packs rated at 3800
mAh or lower. LiPo battery packs are not allowed. Sub-divisions of these classes will be by
Motor Type – Stock Or Modified. Stock motors shall conform to industry size standards, be
commercially available and be limited to 24 degrees of timing, have a minimum 64 inches
of 22 AWG round wire Mabuchi cross wrapped for 27 continuous turns of wire per pole.
Modified motors shall conform to industry size standards. Brushless motors will be allowed
in Modified motor classes only.
Sprints:
Body: Must have scale appearing cage, nerf bars, and bumpers made of round stock. Exhaust
headers must appear on both sides of car in "engine area" and be made of round stock or
molded polycarbonate. Must appear 1/10th scale.
Front Bumper Width: Maximum 4”
Wheelbase: 9” – 11.5”
Maximum Width: 10”
Maximum Length: 18”
Transmission: 2WD 3 gear reduction or direct drive
Minimum Weight: 50 oz.
Tires:
Wheels: max width 1.75” (buggy tires)
Wings: Must run top wing, maximum surface area is 6” x 6”, left side 4” x 7” max, right side
3.25” x 7”. Wing minimum height at leading edge 5.5" from ground. Front wing maximum
surface area is 8 square inches.
Truck:
Body: Any truck body
Front Bumper Width: Maximum 4”
Wheelbase: 9” – 11.5”
Maximum Width: 13”
Maximum Length:
Transmission: 2WD 3 gear reduction
Minimum Weight: 54 oz.
Wheel: Minimum diameter is 2.2". minimum wheel width is 1.8”
Tires:
Spoilers: Maximum of 1" rear spoiler allowed, Must be mounted to rear of deck lid only.
Side Dams: no higher than the top of the truck roof.
Eastern Dirt Modifieds (EDM):
Body: Modified bodies must leave front tires completely exposed and the rear tires at least
1/3 exposed. No wheel cutouts are allowed on the horizontal plane of the deck area of
modified bodies. Modified nerf bars and rear bumpers are optional. No front wings allowed.
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 degrees.
Front Bumper Width: Maximum 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"
Wheelbase: 9” – 11.5”
Maximum Width: 10”
Maximum Length: 22”
Maximum Roof Height: 7.5” at highest point not including spoiler
Maximum Body Height: 7.5” (at ride height). 1/2" spoiler allowed on Roof but is included
in 7.5" max. - Max Body Height will not be enforced this year but is a reference for those
who wish to race at large events where it is.
Rear Spoiler Chord: Maximum 3”
Maximum Side/Sail Panel length: 17” – Side panels cannot extend in front of front axle.
Transmission: 2WD 3 gear reduction
Minimum Weight: 50 oz.
Wheel: Maximum width 1.75” (buggy tires)
Tires:
4WD Late Model:
Body: Late Model
Wheelbase: 9” – 11.5”
Maximum Width:
Maximum Length: 19”
Rear Spoiler: max 1.5” high
Maximum Side Dam:
Wheel: w/ Foam tires Max width is 1.18” (30mm), w/ Rubber tires Max width is 1.75”
Tires:
For more information, visit the Florida Dirt Oval Series website.
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