2011 OKDCR

CLASSIC DWARFS

RULES of COMPETITION



GENERAL RULES

1. OKDCR race rules shall apply to all events to recieve points and pay.
2. All OKDCR vehicles are subject to inspection at any time.
3. Approval of a OKDCR vehicle by the inspector shall mean only that the vehicle
is approved for participation in a competitive event and shall not be construed
in any way to mean that the inspected OKDCR vehicle is guaranteed mechanically
sound. Be it further declared that the inspector shall not be liable, nor shall
the sanctioning body, for any mechanical failure not for any losses, injuries
or death resulting from same.

SPECIFICATIONS

1. BODY STYLES
Any car specifications not covered in these body specs are subject to OKDCR
interpretation. Any significant performance advantage will be addressed on
an individual basis. OKDCR reserves the right to determine what constitutes
an unfair advantage.

(a) 1928-1948 American-made production vehicles only, 5/8 scale, two-door sedans,
coupes, or pickup trucks. These are to be known as Classic Dwarf body styles.

2. BODY REQUIREMENTS AND SPECIFICATIONS

(a) Body must be 5/8 scale, stock appearing. Maximum outside tire width 60 1/2",
Cars must pass freely through a hoop 61” wide by 50” high, 73” wheelbase plus
or minus 1".
1. Must have grill shell or simulated open radiator matching original body
style, any material.
2. Doors, windows, and cowlings must retain stock appearance. Hood louvers
allowed for cooling, but must maintain stock contours.
3. Engine compartment must conform to scale and match contour of body.
Hole may be cut for breather clearance only. Ram air induction system
prohibited.
4. Must have closed trunk lid or fully enclosed trunk access panel conforming
to original bodylines. Louvers allowed no holes.
5. No fenders.
6. No wings or spoilers.
7. Ram air induction system prohibited.

(b) Body will be metal construction, 26-gauge steel or .040" aluminum minimum.
Fiberglass or plastic grill shells allowed. No lips or spoilers of any kind.

(c) NO open top cars (roadsters, convertibles). No panel trucks, station wagons,
or specialty cars.

(d) Classic Dwarfs Overall Dimensions
1. NO car over 50” tall, top to ground. Body height maximum 44”, bottom edge
to top (including frame rail).
2. Maximum body width: 38” Maximum frame width 34”; min 30”
3. Body contour must follow frame and roll cage. Roof hatch entrance allowed.
4. Frame ride height must not let car bottom out on track.
5. Drivers door must be operational and equipped with secure latch.
6. Fasteners on hood, trunk, or panels must be positive, locking type.
7. 124” maximum total length, bumper to bumper.
8. Kick outs or side nerf bars must be mounted at three points. 1 Ό” max .125
wall thickness. Cannot stick out beyond 1” from the side of the tire.

3. WEIGHT

(a) All cars must weigh 1200 pounds with driver at any time.

(b) Max of 75 pounds of ballast.

(c) All ballast must be mounted inside body lines.

4. BUMPER DIMENSIONS

(a) Front maximum width 30", Bumper height 6” to 8" with 2-bar loop. Ground to top
of bumper: 12” minimum, 16” maximum. Bumper may not extend more than 12"
forward of front tires.

(b) Rear maximum width 56” with 3 vertical bars. Bumper height 6” to 8" with 2-bar
configuration. Ground to top of bumper: 12” minimum, 18” maximum. May not extend
more than 8” behind rear body panels.

(c) Bumpers must be hollow with max wall thickness of .125

5. FIREWALL

(a) Firewall must be metal and must completely separate engine compartment from
cockpit. Engine protruding into cockpit must be enclosed.

6. WINDSHIELD

(a) Windshield must be Lexan, wire mesh, or protection bars. Lexan highly recommended
when running asphalt. No Glass. All other cockpit areas must remain open.
Deflectors may be used in front of driver. May be no wider than roll bar area.

7. NERF BARS

(a) Full length nerf bars between front and rear tires recomended. Short nerf bars
required. Maximum outside diameter of 1.25” and .125 maximum thicknesses, must
be hollow and may not extend out beyond tread width more than 1" at the rear only.

8. SEAT

(a) Seat must be high-backed aluminum, racing type. All cars will have a permanent
bar located behind top of seat at shoulder level. Bottom of seat will not be more
than 63" back measured from upper ball joint. Seat may be tilted back for added
driver head clearance, however, no portion of the seat may be back more than 70"
as measured above.

9. NUMBERS AND GRAPHICS

(a) Car number must be minimum 12" in height and 2" stroke. Must be displayed on
each door and roof or trunk. Numbers in 4" size should be on front and rear of
car to help with line-ups.

10. WHEELS AND TIRES

(a) Steel wheels only, minimum wall thickness .090", 13" only, Wheel width max. 8".

(b) Hoosier Racing Tires soft, medium or hard, size 235/60/15,215/60/15,or
205/60/15 only. Goodyear G45 or G50. 40-durometer minimum before race
for dirt. Asphault must be DOT tire Durometer no less than 55. Grooving or
siping of tread surface is permited. Max size 235-60-13

(c) Bead lock rims are optional on right side only.

11. ENGINE SPECIFICATIONS

(a) Injected Motor Specifications:
*1000 cc or less engines produced for minimum of 2 years.
1. Must remain stock bore and stroke, no altering rod or piston specifications.
2. All head components must remain stock, (except cam sprockets may be slotted
type). Cams must be as per original equipment manufactured (OEM) and must meet
specs as per manufacturer.
3. ONLY OEM stock ignition system with OEM ECU box may be used.No fuel monitoring
control devices allowed in the drivers reach or driver cockpit area. All cars
may be teched after any competitive race event.
4. Engine must retain its stock fuel induction system. May run aftermarket air
filters.
5. Alternator recommended but not mandatory.
6. Aftermarket air filters and oil pans permitted
7. Secondary butterflies may be removed.
8. The intent of these rules are to keep internal part of injected motors OEM
stock

(b) Carbureted Motor Specifications:
1. 1250cc (+1%) Maximum
2. No engine can be modified to be less than original stock configuration OEM
specifications.
3. Must be in production for at least 2 years.
4. Aftermarket electronic engine components allowed.
5. Carburetors and cams optional.
6. Aftermarket cylinder & cylinder heads.
7. Porting, grinding, polishing or changing stock configuration of intake or exhaust
ports allowed.
8. Carburetor boot must fasten directly to head in the stock intake port location
9. Header must attach directly to head in stock exhaust port location
10. Oiling system may not include a dry sump system.
11. No increasing of stock stroke in any way.

(c) “General Motor” Specifications:
1. Four cycle, four cylinders maximum only. Must have working transmission, clutch,
and starter with all parts in place. Complete Clutch assembly must remain in
engine. External reverse boxes allowed. No air controlled shifting devices.
2. Charging system optional. Battery powered ignition system only. Alternator cover
allowed.
3. No auxiliary starters.
4. Engines must be front mounted in engine compartment.
5. Engine setback: The "square of the engine" (rear fins of the jugs) may not extend
rearward more than 17" from the center of front spindle. No part of the engine or
transmission may extend rearward more than 21 inches from center of front
spindle.
6. No after market fuel injection, and no turbos. No nitro, or nitrous oxide.
OEM fuel injection must remain stock.
7. Engine must be cooled by original intent. May use extra fan or oil cooler.
8. Engine exhaust must include muffler and exit rearward. All muffler devices must
include baffles. MUFFLER MUST MEET LOCAL TRACK REGULATIONS, (IF MANDATORY)

(d) Engine Tech Procedures
1. Cylinder cranking compression-minimum 100p.s.i., Maximum 220 p.s.i. per cylinder
average of 4 cylinders, no variance, after ten (10) compression revolutions of
cranking, 15-45 minutes following feature event.
2. Carburetors or Fuel Injection and all 4 spark plugs must be removed before
checking compression.
3. All Engines Manufacture date must be 2 years old. Example: Engine must be 09
or older to run in 2011.

12. BATTERY, FUEL SYSTEM

(a) Battery and fuel pump must be mounted outside driver compartment. Battery must be
secure and held with non-rubber strap. Electric fuel pump allowed.

(b) Fuel cell mandatory, maximum 5 gallons, located in trunk.

(c) Gasoline or alcohol only, no fuel additives allowed. According to local preference.

(d) Reinforced or steel braided line must be used in all high-pressure areas.

(e) A direct manual cutoff switch wired to ground circuit will be installed on the right
rear shelf or rear fire wall within 6” of the corner formed by the rear deck and
rear fire wall. Switch will be located over the right shoulder of the driver.
The emergency electrical cut off switch will be clearly located and marked.

13. DRIVE TRAIN

(a) Must use steel drive shaft from transmission to automotive rear end. Minimum 2.50" x
.083" or 2" x .120".

(b) Quick change rear ends allowed with steel tubes only.

(c) Drive shaft tunnel must have minimum of 2 (3 recommended) 360-degree hoops between
firewall and seat back. Must be fabricated of minimum .1875" X 1.5" steel bar. 1" X
.095" steel tube highly recommended.

(d) Rear must be locked or have a solid spool.

14. FRAME AND ROLL CAGE

(a) Main frame members will be minimum of 1" X 2" x .120" wall rectangular steel tubing
only. Mainframe rail consist of the length between the front bumper mount to rear
bumper mount. No aluminum allowed in cage or frame.

(b) Main frames will have a minimum of 3 cross members between firewall and back of seat
fabricated of same material as frame rails. Alternate material may be steel angle,
min. .125" X 1.5" X 2". Cross-bracing in floor under driver strongly recommended.
Rear frame rails at rear roll bar must be 34” max and 30” minimum outside dimension.
Rear roll bar must meet same dimension as the frame it is mounted to. Frame may
taper forward of driver seat area. Front engine area frame width must be 24: max
and 20” min outside dimension. Left and right frame rails must be the
same + or – ½”.

(c) Roll cage must be DOM steel minimum 1.25" x .083" (.095 recommended) in all cars
manufactured from 12/98 on. Clubs may grandfather older cars with 1" x .065" tubing.
Cross-brace or diagonal strongly recommended in hoop over driver's head.

(d) All cars must have cage bars installed across door openings on both sides. Bars
should be welded in place as part of roll cage. Minimum size 1" x .065". (1.25"
x .095" recommended) cars with bars mounted on doors should have full doorframe
and minimum of 2 horizontal cross bars. Minimum 1” x .083". Cars with bats mounted
on doors must have 1/4" x 2" steel stops welded in on each side of opening,
totaling a minimum of 4" on each end of door.

(e) It is required to have a steel bar with a minimum size of 1" X .065" from doorpost
to doorpost, under the dash. Steel plate on driver's door bars recommended

(f) It is recommended that, if using rivets, body panels attach to tabs welded onto cage
instead of drilling multiple holes into cage bars.

(g) No down tube frame cars allowed. Any bars going from cowl area to snout must remain
below the upper line of hood.

(h) Classic pickups may have two (2) bars going from upper rear roll cage down to rear
clip.

(I) Underslung rearend only.

15. SUSPENSION

(a) Front suspension must not extend rearward past the most forward panel of the
firewall.
1. No Aluminum Spindles allowed.

(b) Rear trailing arm/radius rod specifications:
1. Arms may have a maximum length of 30”.
2. Torque-absorbing devices are permitted.
3. Maximum 3 radius rods or 3 link suspension

(c) Wheel offsets are allowed.

(d) Hub offsets are NOT allowed. Hubs front and rear must be within 1/2” distance from
mainframe rail on either side of car, measured from center of rotor to vertical
plane of frame rail.

(e) Coil-over shocks are the only allowable means of supporting the chassis. One shock
and spring per wheel only. Shock and spring must remain as one unit.

(f) Shocks must be non-adjustable type. May not be of a type that allows disassembly.

(g) No driver shall have the ability to adjust suspension from inside car.

(h) Straight front axles are prohibited. Local clubs may grandfather existing cars for
competition.

(i) No leaf springs.

(j) No birdcage type rear linkage.

(k) Anti-roll (sway) bars permitted front or rear. Must be connected without adjustments
to arm location.

(l) No torsion bar suspension system of any type allowed.

(m) The use of carbon fiber or titanium in any way is prohibited.

16. STEERING

(a) All steering components must have safety fasteners such as cotter pins or self-
locking nuts.

(b) Manufactured quick-release steering wheel hubs mandatory.

(c) Rack and pinion steering is mandatory.

17. BRAKES

(a) Both Brakes on front and one on rear required. May cap off right front brake line on
dirt.

(b) Rotors and calipers:
1. Steel rotors mandatory, .250 minimum thickness.
2. Steel OEM calipers or aluminum calipers.
3. Cutting & scalloping of rotors will be allowed with no rotor surface being less
than 3/4” in width.
4. Drilling of rotors is permitted.

(c) Adjustable brake bias and wheel shut offs allowed.

(d) Competition-type master cylinders allowed.

18. SAFETY EQUIPMENT

(a) Fire bottle system HIGHLY recommended.

(b) Driver uniform will consist of:
1. Fire suit (single layer minimum, one or two-piece).
2. Fireproof gloves.
3. Fireproof shoes.
4. Approved helmet with Snell 95 or higher.
5. Full-face helmet.
6. Head and neck restraint systems recommended.

(c) Car must be equipped with 5-point safety harness, no more than 3 years old, with
minimum of 3-inch belts.

(d) Aluminum, high-backed racing seat mandatory.

(e) Window net or arm restraints, and head & neck restraints required.

19. NO two-way radios. One-way communication from officials only is allowed.

20. NO mirrors allowed.

21. DRIVER QUALIFICATIONS

(a) All drivers must be minimum of sixteen (16) years of age. Any drivers under 16 years
of age may be considered. If allowed by majority vote they will be on probation
their rookie season and if deamed unsfe by majority of of other competitors may be
asked to leave at any time.

(b) Rookies will start on back of feild for first 5 race nights.

22. GENERAL REGULATIONS

(a) The rules and/or regulations set forth herein are designed to provide for the
orderly conduct of racing events and to establish the minimum acceptable
requirements for such events. These rules shall govern the condition of all
events, and, by participating in these events, all participants are deemed
to have accepted and complied with these rules. NO EXPRESSED OR IMPLIED
WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATION OF OR COMPLIANCE WITH THESE
RULES AND REGULATIONS. They are intended solely as a guide for the conduct
of the sport and are in no way a guarantee against injury or death to a
participant, spectator, or official. Any interpretation or deviation of these
rules is left to the discretion of OKDCR and the decision is final. NO EXPRESSED
OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH DEVIATION OF SPECIFICATIONS.

(b) No intoxicating spirits or controlled substances are to be consumed before or during
race events by anyone entering the pit area of tracks.

(c) OKDCR reserves the right to reject or allow entry of any driver or car.

(d) Abuse or confrontation of any racetrack or OKDCR official and/or use of abusive
language is strictly prohibited. FAILURE TO ABIDE BY THIS RULE MAY RESULT IN
SUSPENSION, LOSS OF POINTS, WINNINGS, RECORDS, AND/OR CASH FINE.

(e) Any disputes involving qualifying times, lap scoring, finishing position is under
the jurisdiction of the hosting track officials. OKDCR officials will address
winnings, points,or rules interpretations. Any disputes or discussions of this
nature are to be held with OKDCR officials only.

(f) THE DRIVER ASSUMES RESPONSIBILITIES FOR THE ACTIONS OF THEIR PIT CREW AND
GUESTS.

(g) Drivers, owners, and/or crew shall have no claims or actions of any kind against
or cause of action for damages of any kind, expenses, or otherwise against OKDCR,
any track owner,promoter, or official by reason of disqualification or damage to
either car, driver, or both. This regulation shall be deemed a covenant not to
sue made by each driver, owner, and/or crewmember to OKDCR, any track owner,
promoter, or official with respect to any alleged act or omission or agreement
by any of them.

(h) OKDCR or track officials at any time for safety, mechanical, or rules compliance
may inspect any car.

(i) ANY RULES OR REGULATIONS NOT COVERED IN THIS BOOKLET WILL BE DETERMINED
ON A TIMELY BASIS BY OKDCR AND THE DECISION IS FINAL.

(j) Any violations for OKDCR engine rules may result in loss of all accumulated
points for the season and a one-year suspension for both owner and driver of
said vehicle. The OKDCR Board of Directors will determine all additional penalties.

(k) Effective date of these rules January 1, 2010.


MOTOR RACING IS A DANGEROUS SPORT AND MAY RESULT IN INJURY, BODILY
HARM, OR DEATH.

Rules updated January 1, 2010

ALL CARS THAT RAN THE 2009 SEASON WILL BE GRANFATHERED IN THE NEW RULES AS LONG AS IT IS
NOT A PERFORMANCE ENHANCING ISSUE. (BUMPERS, FUELSCELLS, TIRES AS LONG AS THEY DUROMETER
CORRECT,ETC.). ALL CARS GRANFATHERED IN HAVE TILL 2012 SEASON TO MEET ALL RULES.

THESE RULES WILL BE EFFECTIVE FOR A MINIMUM OF 2 YEARS UNLESS OKDCR SEES FIT TO MODIFY
TO KEEP COMPETITION EQUAL.

Copyright ODCR 2009