Super-Stock Class Rules

Note: These rules state only those modifications that are allowed. It is the entrants sole responsibility to demonstrate that their "cars" meet these rules at all times. Modifications performed on entered "cars" that are not specifically identified in these rules will not be allowed and the "car" will be disqualified. In areas where specific modifications are identified, entrants may propose alternative methods, not listed in the rules, to achieve the same function as the identified modifications. The legality of these modifications will be determined on a case by case basis and may be allowed if the modification performs the function allowed without also resulting in a competitive advantage over the specific modifications identified.

Body Rules

1. Body must be one of the following:
   • Stock Aurora T-Jet original,
   • Stock Model Motoring original,
   • Stock Johnny Lightning (JL) ThunderJet-500 original,
   • Stock MEV original (Including GT Racers),
   • Stock HO Detroit original,
   • Stock Road Race Replica (RRR) original, including “RaceJets” with molded in glass.
     Note: Fairground specials, factory lightened, "Fray Kit" and similar lightweight bodies are not allowed.
   • Stock Dash Motorsports original,
     Note: Hot Rod, Super Modified and Lead Sleds bodies are not allowed.
2. Body cannot be lightened. Wheelwells and the lower edge of the body cannot be modified. Body may be lowered. However, the body posts must touch the chassis when placed on a chassis having full height gearplate rails.
3. All windows must be stock (thick plastic) glass. Film windows are not allowed. Lower edges of windows may be trimmed to avoid interference with the chassis and/or gears.
4. On bodies with full side windows, one small hole (No larger than 0.075") for gear oiling purposes, may be drilled in the side or rear window.
5. Open wheel bodies (Indy, Grand Prix etc.) are not allowed.
6. The body must completely cover the chassis when viewed from above except for legal stock openings (i.e. windows).
7. Body must not exceed original width.
8. Each body must have originally equipped or reproduction bumpers.
9. Two screws must be used to mount the body to the chassis. Screw heads may be modified for track clearance. Screw heads shall be no larger than 0.165” in diameter.
10. Body must be equipped with two screw posts.
11. Split screw posts may be repaired or replaced with plastic in their original and intended position(s). No metal sleeves are permitted.

Chassis Rules

1. Chassis must be stock T-jet copper. Bending of motor brush springs is allowed. No other chassis modifications are allowed.
2. Removal of gearplate rail is permitted, patent number must be legible. No other cutting, grinding, or drilling of chassis, gearplate, or gearplate clamp is permitted.
3. Solder or glue is allowed to attach gears to shafts.
4. The cluster shaft shall be stock (steel).
5. Only stock or commercially available 14-tooth "armature" gears are allowed.
6. Only stock or commercially available 24-tooth brass idler and driven gears are allowed.
7. Only stock or commercially available 9-tooth rear end (final drive) pinion gears are allowed.
8. Only stock or commercially available 15-tooth crown gears are allowed. The crown gear boss may be trimmed or spacers may be added between the chassis and gear to adjust for proper gear mesh.
9. Gears may be polished to provide a smooth mesh. Drilled, grooved, chamfered, or lightened gears are not allowed.
10. Guide pins must be either stock black Aurora or mass-produced molded plastic guide pins. Pin length may be shortened. No rear or swivel guide pins permitted. Gluing of guide pins to chassis and countersinking of the guide pin screw hole are permitted.
11. Cars must use original stock, reproduction stock, or narrow double-flanged plastic T-jet rim mounted any magnetic steel axle. The width of the chassis must be no wider than 1.085 inches, measured at the outside edges of the rims.
12. Rims must be equipped with rubber, silicone or plastic tires. Maximum tire width is 0.100”. Minimum front tire diameter is 0.325". Minimum rear tire diameter is 0.355”. Tires may not easily rotate independently from the rims. Tire/Rim lubricant may not be used.
13. Maximum front axle lateral movement is 1/32" (0.03125”). Non-metallic (i.e. plastic or phenolic) flat washer type spacers with a maximum diameter of 3/16" (0.1875”) may be used on the front axle only to limit lateral movement. All spacers must be located outside of the chassis. Wheel weights and/or hubcaps are not allowed.
14. Front axle may be located in any stock wheelbase position. The center (truck) position must not b used.
15. Any original Aurora pancake style "armature" with no more than two "stack" gray laminations and with all of its original windings "unmodified" may be used and may be balanced. (No stock-replacement, dewind, rewind, turned or epoxy coated motors are allowed).
16. The average "armature" pole resistance as measured from pole to pole must be equal to or exceed 16.0 ohms at ambient room temperature following a 5-minute cooldown.
17. Magnets must be stock Aurora that fit the T-Jet chassis. JL or Super II magnets are not allowed. Magnets must not be cut, drilled, or sanded. Legal magnet setups will not pick up a John Deere 10 gram groove pin (stock #25H534) completely off of the table. (Note: Test is performed on the assembled chassis).
18. Magnets may not be shimmed.
19. Any and only copper/carbon brushes, flat top and bottom, are allowed. The brushes may be lightly scored in a maximum of two places (X pattern) to prevent rotation.
20. Pickup shoes and springs must be stock copper T-jet or stock replacement. (Aurora, American Line, or StlotTech) No weights, wires, or creative bends allowed. Pick up shoe travel may be limited. Ski shoes are not allowed.
21. The "step" in the pick-up shoe must remain intact and be unaltered, except for only that the first bend may be changed slightly so that proper "pick-up shoe" to "rail" contact can be achieved. No attempts to "flatten" the "step" are allowed. The area between bend 1 and bend 2 may be "flattened" to achieve better contact with the "rails". The front, vertical, slotted portion of the pick-up shoe may be bent to limit shoe travel. The rear, hook portion of the pick-up shoe may be bent to limit shoe travel and adjust shoe tension. Heat shrink tubing may be placed on the front, vertical, slotted portion of the shoe, prior to Bend 1, to limit shoe travel.
    • Pickup Shoe Diagram
    • 
    • 
22. The chassis' copper pickup retainer may be bent slightly to improve electrical contact.
23. Pickup springs may be cut, crushed or lengthened. Washers or spacers shall not be used to adjust spring tension.