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Australian Classis Racing Rules.
Rule design and intent
The Australian Classic racing rules are designed to provide low cost fun racing that is easily supported by the track owners and where slot car racing occurs on a level playing field where all racers have predictable racing conditions and where advantage falls to no particular party or person. The rules are designed specifically to exclude old well known lurks and perks of variable track power, unreliable traction and advantage taken with the supply of exotic and unavailable bits.
The proposed class is derived from the original VSCA and NSWMRRA slot car racing rules of the late 1960s, early 1970s where chassis design and configuration were open and unspecified in their configuration. The intent of the class is to promote low cost components specified by the rules and chassis technology that is within reach of the hobbyist without the need or cost of exotic high tech equipment and materials. Typically the chassis will be of soldered construction and made from materials specified in the following rules.
It is essentially a constructors class for "scratchbuilt" slotcars but the rules are flexible enough to allow commercially made chassis of compatible construction for easier entry level racing. The exclusion of "exotic" bits is designed to keep the cost down and maintain the widest access to common components by the most number of racers.
To solve historical problems of individual racers gooing the track for their own cars to the detriment of other racers, the class is designed for spray goo applied by the track owner with no goo being applied or used to the car by the racer. Tyre treatments are allowed by the individual car owner and/or racer but the car must be presented at scrutineering with clean non-gooed tyres. The wording "clean non-gooed tyres" allows for spray goo on the tyres in practice before scrutineering. No tyre treatment is allowed that in any sense damages the track surface. The intent is to provide reliable uniform traction for all racers so that the old lurks and perks of who had the best tyres that best suited the track conditions are excluded.
Scrutineering tolerance
The class is primarily designed to afford even and low cost fun racing for racers ranging from beginners to older more experienced racers. The following rules are designed to support this class of racing but are not intended as a "legalistic" source of excluding some cars due to minor variations in the car preparation. Almost exclusively the scrutineer will be a person of some experience in building and racing slot cars and the tolerance specified in the rules is to allow the scrutineer to tolerate minor variations in the rules as long as they provide no material advantage to the racer. Such tolerance should be applied in an even handed manner to all persons racing at any given race meeting.
Racing Rules
(1) Motor. The class is designed to use a Falcon 7 motor that must not be either modified or opened. Any mounting method is acceptable and the shaft may be cut down to match the pinion width. You may only use one (1) motor in the car. Making minor clearance for the rear axle by filing or grinding the motor case is allowed as was common for both anglewinders and sidewinders in the early 1970s but the motor case may not be modified or added to apart from normal mounting methods.
(2) Chassis.
* (a) The chassis may be constructed from high tensile steel wire (piano wire), any brass or copper based alloy wire, brass tubing, sheet brass or other copper based alloy or low carbon (mild) steel. Specific exclusions are high tensile steel as either components or complete chassis, aluminium or magnesium based alloys, any titanium parts whatsoever and any structural non-metallic chassis components (plastics, composites, carbon fibre etc ...). For non structural components, rubber, plastics and similar material is acceptable, typically for damping purposes.
* (b) High tensile steel guide tongues have existing precedent and are allowed under this class of racing but they must not exceed 0.875" in width and must not be over 2.00" long. The high tensile guide tongue may be attached to the chassis but must not function as an integral structural part of the chassis.
(3) Maximum Width
* (a) Chassis must be constructed so that the maximum car width including the body and the body mounting method do not exceed 3.250 inches.
(4) Rear Axle
* (a) Rear axle must be solid and made of steel.
* (b) Specific exclusions are hollow axles or axles made of any other material.
(5) Bearings
* (a) All bearing in the car will be of the solid bush type, any bearing material is allowed.
* (b) No other form of bearing is allowed including any form of ball or roller bearing in any part of the car.
(6) Wheels
* (a) Rear wheel must measure .750 inches or greater.
* (b) Front wheels must measure .625 inches or greater.
* (c) Front wheels must be fully functional, touch the track, be able to support the weight of the car and be visible through the front wheel arch of the car.
(7) Tyres
* (a) Any form of front tyre is acceptable as long as it is constructed of rubber or similar material, Neoprene and similar synthetic rubber are acceptable.
* (b) Rear tyres will typically be black sponge rubber but minor colour variation is acceptable, dark grey, blue, green etc ...
(8) Ground Clearance
* (a) Rear clearance at the axle and surrounding areas must be able to clear 0.047" wire.
* (b) Front clearance at front wheel location must clear 0.015" wire.
(9) Bodies
* (a) Any body can be used from any period of motor racing but the body must be a reasonable representation of a real racing car. Thingie bodies are excluded from this racing class.
* (b) Bodies must have cut out wheel arches and both front and rear wheels must be visible through the wheel arches.
* (c) The body must have an interior placed in the cockpit of the car and the interior must be detailed in at least three (3) colours.
(10) Aerodynamics
The only form of aerodynamics allowed is a single rear spoiler attached to the trailing edge of the car body. The maximum distance from the body is 0.750" and this must be measured from the main rear trailing edge excluding fins moulded into the rear of the body or turned up corners of the trailing edge. Note that no side dams are allowed under this class.
Rule definition Exclusions
There are no maximum or minimum tyre widths.
There are no maximum or minimum weight limits.
Any chassis/drive configuration is acceptable, you may design and run inlines, sidewinders, anglewinders, reduction gear systems, tooth belt, rubber band drive, roller chain or any other method you can get to work.
