1300 Stox

For beginners with little experience we suggest you start with 1300 Stox.

These are the most forgiving formula and easiest to drive but are also competetive.

Contact is allowed in this class so crashing is common but with the big bumpers damage is kept to a minimum.

If you require any further information please contact us.

1300 Stock Car Construction Rules 2023

  1) Body to be ABS and a reasonable representation of a full size 1300/1400 stock car.  Spoilers are not permitted. Shells to be of a ‘hot hatch’/ ‘cc’ style no estates or saloon styled shells. Windows must be fully cut out.

2) The chassis component will consist of one continuous sheet of aluminium or glass fibre-reinforced plastic only. Chassis must extend from a minimum 10mm ahead of the front axle line and runs continuously along the car to end a minimum of 25mm behind the rear axle line. winged style chassis is permitted provided it is available in a kit from. i.e. Kamtec/Mardave/TIC/Large.

3) Mardave/Kamtec type rear pod base plate, pivot ball and standard V12 spring location, or equivalent parts in shape and construction and mounting locations. 2 rear springs only. 

3a) standard Mardave/Kamtec A-arm style front wishbones Only. To be made of plastic only no alloy. NO zen, Schumacher, Rsgt, Rxgt, Atom, venom style parts are to be used. (GT12 parts not eligible).

4) External plastic bumpers to be fitted to the chassis front and rear. Front to be grid and representative of a full size stock car. Min height of 25mm and max height of 35mm from chassis to top of the bumper. If a single rail rear bumper is used, it may be spaced up from the chassis. Spacers to be a max length of 8mm. If a grid bumper is used on the rear it must follow all rules of the front bumper. Fixings are not included in height measurements. 

5) Overall maximum width of the rolling chassis to be 160mm (178mm including body and bumpers)

5a) Wheelbase of 205mm +/-5mm only.

6) Materials used in the rolling chassis may only be steel, brass or aluminium. Special materials (such as titanium or carbon) are not allowed. Brass and lead only may be used as identifiable weights.

6a) chassis must not have any extra holes drilled or added to allow extra ‘flex’ in the chassis component and that the chassis must be a solid design not slotted to achieve extra movement. 

7) Damper tubes are not allowed. Oil filled shocks and dampers are not allowed.

8) Front suspension may be independent provided that the suspension design does not have any pivot, rod or other mechanism that alters the wheel camber or castor in roll relative to the chassis during its full travel. and must use the standard two bolt fixing, and not modified/elongated.

8b) Ride height/castor can be adjusted with shims/washers. Shims and washers must be made from a solid substance to be a consistent thickness start to finish and rigid. No wedge-shaped spacers or ‘o’-rings are to be used on any chassis mounting points. 

9) Rolling element (ball) bearings are allowed on the front and rear axles. 

10) Min 25mm, max 26mm width of tyres and Max 60mm diameter no Min diameter of tyres, but the tyre must cover the entire wheel edge to edge. Tyre additives are NOT allowed.

11) Diffs are not permitted.

12) Gearing is limited to a 32dp pitch for pinion and Spur gear. 

13) Z drives and alloy pods are permitted. height adjustable rear pods are not permitted.

14) Any 12th scale single bolt wheel to be used, mounted onto a steel axle only. 

15) Powered by 4cell brushed setup. cell layout is free and open for driver’s choice. Motors permitted to follow the BRCA F2 motor spec and list. Currently HPI Saturn 20, Kamtec K21 and Schumacher Core21. 

15a) Speed controller maximum RRP of £50. Electronic speed controller or mechanical resistor type speedo controller permitted. 

16) Steering servo to be of a maximum of £50 RRP low profile servos are permitted providing they do not exceed the RRP.

17) No GT12 hybrid style cars to be used. 

18) Additional holes may be drilled for the re-mounting of the body post and aerial mast locations only. 

19) Parts from other manufacturers may be used as long as they serve the same purpose as the part they are replacing.

20) Minimum ride height of 3mm.

21) All added weights must be bolted to the chassis with a nut and bolt.

22) All cars must be commercially available to buy. Anyone wishing to manufacture a car must go through the process of test and development at their regular club with the clubs agreement. If they wish to then race the car they must be able to make units available to purchase by other racers. It must comply to the current construction regulations if being sold to race. It must be of a comparable price to those being sold by other manufacturers and not overly priced to limit availability. Anyone wishing to develop or modify a car that does not comply with current construction regulations has to do that test and development at their local club with their agreement, any changes to the construction rules that allow new designs to race would need to be approved at the BRCA AGM following the correct procedure.