Southern California Slot Racers Association (SoCal USRA)

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SOCAL SCALE CAR RULES FOR 2002 SEASON

GENERAL INFO:
For NASCAR, GT-1 and 4 ½ NASCAR the distance from the top of the rear axle to the bottom of the chassis cannot be less than .345 inches.

Minimum rear clearance for GT-1 and GT-12 cars will be specified by the track owner.  Refer to the information page for each race to see the clearance rule.  Unless stated otherwise, GT-1 will use 1/16 rear clearance and GT12 will use 1/32 clearance.

For all classes, 3/32 rear axles may be used. Experts may use any gear pitch. Amateurs may only use 64 pitch.

 


4 1/2" NASCAR:
Chassis: Must be commercially available and stamped and formed metal material only. No modifications allowed except for the following: may solder or glue oilltes and motor in place; may add lead weight; may modify motor bracket for motor installation but must retain a portion of bracket. May add tape to chassis. May use light weight replacement pans and center sections. No oilite modifications. May use offset oilites; may add spacers between pans and center section. May add a 1 inch motor brace and an upright brace.  Pin tubes are allowed. May only use production extenders on the chassis they were produced for. May remove front wings for extender front wheel clearance only. See list of approved chassis.

Motors: Balanced 16d Group 10 motor as described in 2002 USRA National rules for production 1/24 Stock car. No ball bearings.

Body Specifications: Champion 4 1/2 NASCAR bodies only, part numbers 255,256,257 (Taurus) ,258 (Pontiac) ,259 (T Bird),260 (Monte Carlo).  1/4 inch front bumper. 1/8 inch rear bumper. Maximum height of rear spoiler is 1 5/8 inches.  No roof height requirement. Click on the diagram for a larger view (Opens in a new window).

Axles/Tires/Wheels: Front axle min. diameter 3 / 32", real axle diameter 3/32". Front wheels min. diameter .675", rear wheels min. diameter .750.

All tires front and rear must be black rubber. Min. front width .400", max. rear width .810" including rubber over-hang. Solid front axles only, no stubbies. Independent rotating fronts allowed. Front axles may be soldered to chassis but tires must rotate. May add oilites to front axles for soldering support only. May add clear coating to fronts.

Gears: Any gear ratio allowed. Must use 64 pitch pinions and spurs. May solder pinion.  Expert class may use any gear pitch.

Clearance: Car including chassis and gear must have .063" rear clearance.

Approved Chassis: Champion TurboFlex and Astro XE, JK one piece and
Scorpion II, Parma Flexi 2 and 3

 

GROUP 10 NASCAR
Same as described in 2002 USRA National rules for Group 10 4 inch NASCAR with the following exceptions:

  1. Only 3/32 axles allowed
  2. Only 64 pitch gears allowed in amateur class
  3. No roof height requirement. Bodies must still have 1/8" front and rear bumpers

Parma bodies: 1086 Monte Carlo, 1132 Grand Prix, 1046 Dodge, 974 Taurus, 1084 Taurus 2K, 1112

Kelly bodies: 1722 Taurus

ToyTech bodies: TR-117-7 Grand Prix, TR-118-7 Taurus, TR-063-7 Monte Carlo

O/S bodies: 2K2 Dodge – OS-051,048,050

 

 
GT-12
Same as described in USRA National rules for GT-12 with the following exceptions:

  1. Ball bearing allowed in can end of motor
  2. ToyTech Cadillac is legal for SoCal USRA only
  3. Amateur class may only use 64 pitch gears
 

Toy Tech Bodies: TR-166-7 ALMS coupe, TR-165-7 ALMS, TR124, 097,103,124-7,097-7,103-7,095,096,102,095-7,096-7,102-7

PSE Bodies: 70514 Lola, 70513 R8R, 70519  Ultimate Intrepid, 70506 Intrepid SS, 1103 Intrepid, 70512 Euro R8R,70513

O/S bodies: OS-067 2K2 Caddy, OS-066 2K2 Mercedes, 084,085,067E,066E,062U,064U,062

JK Bodies:
70701- Ultimate Peugot, 7070C, 7073, 7014U, 7014B

Kelly Bodies: 1754 Countach, 1756 Diablo, 1750 Elise

 

GT-1
Same as described in 2002 USRA National rules for GT-1 with the following exceptions:

    1. Amateur class may only use 64 pitch gears.

Bodies now follow National rules.  Body must be trimmed along the cut line.  Here is the list:

O/S bodies: 2K2 Mercedes – OS-088

Parma bodies: Mercedes  1044, Porsche  1045

Kelly Bodies: 1741 Mercedes,  1740 Porsche,  1742 CLK

JK Bodies: 7197 Bentley, 7112 Saleen GTS, 7194 Chrysler LMP,  7195 Courage,  7196 Panoz LMP, 7193 Reynard, 7187 Lola Judd , 7191 Sintura, 7186 Panoz Open driver, 7176 Toyota, 7192 Audi R8, 7184 BMW V12 LRM, 7185 Cadillac Le Mans, 7177 BMW Le Mans, 7178 Porsche GT1, 7183 Mercedes CLR, 7182 Audi RSC