B. "Commercially-available" means that the product must be readily available through retailers and/or three (3) national USRA member Commercial Distributors by October 1 of the year prior to the USRA National Event (or other USRA competition event in which they will be used).

C. The number of pieces required to be available for a product to be considered commercially-available is 250 pieces for Gp-12/15 motors, tagged armatures, restricted chassis, any other restricted component, and bodies.

D. A product will be considered to be no longer commercially-available after production has ceased. Products in this status which have been approved for competition will continue to be legal for USRA competition for a period of no longer than 2 years after production ceases.

E. All products which are considered to be commercially-available as well as restricted products must meet retail specifications and must be sold at standard industry discounts through approved dealers. Any product that is restricted in retail price by the USRA may be adjusted in retail price according to the annual cost of living, maximum 5% annually. These items include: Group 12, 15, and 27 armatures, and GP-

A. TECH IN

1. All drivers will fill out a tech sheet, purchased from the host track, & turn it in with their car at the time of tech in.

2. All cars shall be inspected and impounded prior to race.

3. No cars will be accepted after announced registration closing time.

4. The chassis should be marked with the drivers name for identification. The body, chassis, motor, and pan should be marked with a distinctive spot of non-removable paint or ink.

B. ACKNOWLEDGMENT

All racers entering an event should be aware of the rules governing it, and withdrawal is not an option in the case of a protest.

C. NO SMOKING

Smoking is prohibited within the raceway at all USRA events.

D. NO ALCOHOLIC BEVERAGES

No alcoholic beverages may be consumed within the raceway or within close proximity. Consumption of these beverages must be confined to those establishments licensed for this use.

E. DRIVERS MEETING

The Mid South USRA will hold a meeting at each event for members to make suggestions. This is normally held between the GTP & Group 10 races.

F. TRACK PRE-REQUISITES

G. TRACK CONDITIONS

2. Glue may be removed from the turns with a clean, dry, rag only. Care must be

D. EUROPEAN (STAGGERED) LANE ROTATION

2. Round Robin -If the number of racers is not large enough to justify an additional heat the Tech director may decide to run a Round Robin. This a European lane rotation, with each racer running until they have run the white lane. At this point, the racer will turn in their car to the race director, with out working on it and tell the race director where they came off at . The racer will then corner marshall until it is their turn to return to the race. They will return on the red lane where the race director tells them to.

A. BLACK FLAG

The race director is obliged to black flag any car which is dragging, interfering with other cars, or continuously de-slotting due to mechanical problems. Upon being black-flagged, the driver must bring the car in for repairs immediately. If the problem is not corrected, the black flag may be enforced
again as required.

B. TRACK CALLS

In Scale Division, riders will be track calls.

1. The power will only be turned off for extremely unfair or dangerous situations. The following are the only acceptable reasons:

a) Braid up

b) Power failure (one lane or all)

c) Debris in slot

d) An unmarshallable car

e) Lap counter or track equipment failure

2. During a track call, there will be absolutely no work performed on the cars or lane preparation. Doing so will result in a 20-lap penalty. A second infraction will result in disqualification. This restriction applies to both drivers and their pit helpers. Mid South will allow marshalls to pull out bodies that are dragging in an effort to preserve clean races.

C. LAP COUNTER

1. The lap counter will be considered correct unless it can be proved otherwise. The counter should be corrected if necessary (as when a car crosses in the wrong lane). If a major error occurs in the counting process that cannot be corrected, the race director may at his option:

a) Assign responsible stewards to count laps or verify the counter.

b) Add or subtract mutually-agreeable laps as established by race officials and drivers.

c) Restart the segment.

d) Restart the race from the latest possible point.

2. Laps should not be added or subtracted unless the race director is certain the counter is incorrect.

D. MARSHALING

All drivers are expected to marshal the race(s) preceding their own races. Substitute marshals must be acceptable to the race director and drivers. Good racing is not possible without good marshals. Every racer is required to do his/her part both before and after racing if necessary. Failure to fulfill marshaling responsibilities will result in lap penalties and/or disqualification. (Mid South has raised the fine for leaving without marshalling to $10.00.) All cars will be impounded after all races to insure fair and proper marshaling responsibilities. Cars will be returned and move-up drivers will be given equal time to prepare for upcoming races.

E. LANE CHANGE

1. Following each lane change, all cars must be returned to the track where they stopped. Putting a car back on the track in an advantageous position, will result in a five lap penalty. A second infraction will result in disqualification. It is the drivers responsibility to know where his car stopped. When a car is removed from the track during racing, the same rule applies. Corner
marshals should notice the cars stopping in their section and pay close attention to cars near the lap counter section. At the conclusion of each race, cars will be left on the track. USRA official will pick up the cars & register its location to determine the official finishing order. Failure to leave the car sit can result in being awarded last place points.

F. UNSPORTSMANLIKE CONDUCT

1. Unsportsmanlike conduct on the part of a driver or turn marshal will be subject violators to immediate disqualification at the discretion of the race director. Verbal abuse or profanity will not be tolerated. The race director may first warn drivers, marshals, or pit helpers if their behavior is unacceptable. Serious or repeat violations will result in a five lap penalty for the first
infraction and disqualification for the second.

2. Repeat offenders of any of the unsportsmanlike conduct guidelines maybe prohibited from future USRA events.

G. PROTEST

A competitor may protest another racer’s equipment by officially informing the race director. Special provisions for armature protest are in the
following section.

1. A racer must be aware of the rules when entering a USRA event and
withdrawal is not an option in the case of a protest.

XIV. ARMATURE PROTEST

1. Any competitor may protest another racer’s armature. He/she must officially inform the race director, at which time the race will be stopped.

a) The protester may "buy-a-look" by posting a $2.00 fee. He/she is then entitled to look at the suspected armature in the car.

b) If not satisfied, he/she may formally protest which requires posting a fee equal to double the current manufacturer’s suggested retail price of the protested armature. The "buy-a-look" fee is transferable.

d) At this time, the armature must then be non-destructively and indelibly marked (suggested method is unique Dremel marks on the shaft).
Extreme care must be exercised to avoid damage to armature balance and delicate components such as ball bearings, motor brushes, etc.

e) An impartial race steward must then be charged with the responsibility of observing and verifying the authenticity of the armature for post race inspection. The race will then be restarted.

2. Thorough disassembly and inspection must be conducted immediately upon completion of racing, in a manner assuring accurate technical verification. Armature stack length will be measured, and if within specs, the inspection will proceed to the wire. This can be accomplished by destroying any epoxy or similar binder with extreme heat (suggested method is to use a small torch). Then dissecting the armature with a Dremel and carefully measuring the wire and counting the turns.

3. The fees will be held by the race director until resolution of the matter, then promptly surrendered to the appropriate party. Likewise, any winnings and/or points will be held pending the outcome of the inspection.

4. "Buy a look" proceeds go to the protested party, if not applied to a formal protest.

I. SCALE

The scale to which the cars must be built is 1/24th of the size of an actual race car.

II. WIDTH

All cars may not be more than 3.25 inches (82.55 mm) wide at any point. Round head body mounting pins may extend beyond this width. Other type body pins such as glass head type are not allowed.

III. WHEELS

All cars must have two front and two rear wheels, with rubber tires.

A. Rear tire minimum diameter is 0.750 inches (19.05 mm), unless otherwise specified. Rear wheels maximum width is 0.810 inches (20.57 mm), unless otherwise specified.

B. Front tire minimum diameter is 0.500 inches (12.7 mm), unless
otherwise specified.

C. Front wheels, or one-piece wheel/tire units, must rotate on their axles.

D. Front wheels must be mounted so as to contact the racing surface, as the car is rocked to the side, before grounding on the chassis or body.

IV. CLEARANCE

For all classes, the minimum track clearance of chassis, gear, and motor is .062 inches (1.58 mm) unless specified otherwise. No parts may drag. Guide flag/braid, and front and rear tires are exempt from this rule.

V. GUIDE FLAG

One guide or pickup device per car.

VI. BODY

Body designs should resemble full size race cars. Manufacturers are urged to maintain scale proportions. Variations are allowed to conform to state-of-the-art practices.

A. Paint: All bodies must be fully painted and opaque when sitting on the tech block. Bodies should be detailed to resemble full-size race cars. Exhaust pipes, body lines, injector stacks, mirrors, and decals are optional.

B. Numbers: All cars must display three numbers of reasonable size and position, 1/4 inch (6.35 mm) minimum.

C. Interior: All cars must contain a suitably painted, 1/24th scale driver, with helmet, shoulders, arms, and steering wheel, mounted in the original cockpit position at all times during race. May be made of any material, paper included.

D. Windshield: Windshield must be clear and allow for viewing of driver. May not exceed 1-1/4 inches x 1-1/4 inches (31.75 x 31.75 mm) unless following original manufacturer’s mold lines.

E. Wheel Wells: Wheel wells must be transparent, or cut to the horizontal center line of the front wheel. When viewed from either side of the car, 75% of both of the front wheels must be visible through the wheelwells.

F. Body Openings: The chassis must be completely covered by the body and air control when viewed from above, except for the cockpit opening or USRA legal body openings (such as accurate representations of vents, scoops, etc.).

VII. PARTS REPLACEMENT

Any component may be replaced during competition except the original chassis or body. Any racer found to have switched chassis or body will be disqualified immediately. All replacement parts must conform to the rules
of the class.

VII. GENERAL TECHNICAL SPECIFICATIONS

A. ARMATURE STACK LENGTH

1. Any armature that has been purposely altered or tampered with to make the stack appear longer in an attempt to circumvent the stack length rules as listed shall be declared illegal at the tech inspector’s discretion. Stack length minimums shall be required on all three poles of the armature (using calipers with the faces across each end of the pole) and only the actual lamination material shall be used to determine this figure. This is meant to specifically exclude, for example, such practices as the insertion of spacer-type materials between the laminations, abnormally thick applications of coatings, or any other method of artificial compliance with the rule.

2. Any armature presented for tech inspection that is found to be illegal for competition (such as short stack) will be impounded until the completion of the racing class.