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Club Rules - Summer Series

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General Rules Back to Table of Contents / Top

The overriding rule for anything in this series is to use common sense!. If in doubt ask!.

  • All drivers must hold a current valid BRCA licence and the driver must show the licence if requested by race control or another club / track official. All BRCA safety rules must be complied with, including the maximum weight of any car being 20kg and  the maximum length of 1m

  • All competitors must have their own personal transponders. It is the responsibility of the racer to ensure that their transponder is working and not for the race controller or race director to adjudicate after the race is finished, we are relying solely on the computer equipment. Any drivers still using 40mhz radio equipment must liaise with the race controller to ensure there’s no frequency clashes. No changes to be made without the consent of the race controller.

  • Gyro’s or any other form automatic/electronic steering aids are NOT allowed in any class.

  • A drivers best 6 results from the 8 events count towards the championship: The following apply to both Qualifying and Winning the Race, therefore a total of 200 points maximum can be won at any race meeting -  100 points for a win and 100 points for TQ, 99 for 2nd, 98 for 3rd etc, Tied championship positions shall be resolved by comparing the drivers discarded rounds from the championship

Tyre Rules Back to Table of Contents / Top
  • Tyres are to be of moulded rubber

  • Permitted maximum 1/5th Scale tread widths are: front - 75mm, rear - 80mm.

  • Tyre additives are allowed (circuit rules apply). Drivers do so at their own risk and the onus of safe use lies with the driver. Tyres that have been treated must not be put on the track when they are visibly wet

  • Preheating the tyres with electric tyre warmers is permitted

  • All tyres must be commercially available for retail sale at the time of use

Engine Rules Back to Table of Contents / Top
  • The engine must be a single cylinder 2 or 4 stroke piston engine

  • Only petrol commercially available from UK petrol stations may be used (3c) No Avgas or specialist racing fuels allowed.

  • The only additive allowed is 2 stroke oil.

  • Driver’s fuel may be randomly tested by the scrutineer and readings attained must fall within +/- 10% of the average taken on the day. Any fuel tested that falls outside of the tolerance window will be deemed illegal unless the driver can prove it to be legitimate.

  • Drivers found using additives will automatically face a 12 month ban.

  • The following are not allowed: performance enhancing gases such as Nitrous Oxide, Fuel Injection, Turbo or Super Chargers, Electronic Ignition systems which run off separate battery packs.

  • Touring car 23cc engines may be modified internally to any degree except that separate liners are illegal. Heat sink heads may be used together with long reach plugs. Alternative ignition systems may be used providing they are not battery fed.

  • All engines must be fitted with either a suppresser type plug or suppressed plug cap.

  • Motor cut-out switches cannot be moved and the relevant side window must be cut out for easy access. It is up to the driver/owner to make sure that the cut-out switch is operative and is in a position that can be easily reached by a marshal/mechanic etc (see 3k). In addition, a mechanical fail-safe must be fitted to the carburettor which returns the throttle to a closed position in case of a broken throttle linkage. (The return spring fitted as standard on most carburettors should suffice).

  • Engine Cut out Switches for all Classes must be located in the original position on the engine, and the relevant side window cut out for easy access. This position must be marked on the body with an “E” of no less than 20mm in diameter and outlined in Red.

  • A “one engine rule” applies to the saloon class. Only when the race director declares a meeting “wet” may you change the engine. If any problems occur with the engine, you must report to the scrutineer and then you may repair it, or replace if necessary.

  • The engine capacity is limited to;-

    • 23cc maximum for touring cars

    • 26cc maximum standard engines for the FG Mini and 530 4wd classes 

    • Electric Starts can be used in all classes, but they can only be used in the pits and pit lane. At no time can they be used out on the track, a car must be recovered back to the pits to be restarted. A 10mm hole is allowed to be drilled in the body for access

Transmission Back to Table of Contents / Top

The transmission is a free area with the following exceptions

  • Only two wheel drive is allowed (exception of 4x4 class) which must be to the rear axle only. Electronic traction control systems fitted to the car itself are not allowed in any class

  • Radio control transmitters with traction control programs can be used. Two Speed gearboxes are not allowed

Brakes Back to Table of Contents / Top
  • Cars must be fitted with a braking system that is capable of both stopping the car and holding it stationary whilst the engine is running.

  • Active antilock braking systems using wheel speed sensors are illegal

  • Radio control transmitters with antilock braking programs can be used

Bodyshells Back to Table of Contents / Top
  • Please note safety and common sense applies to all bodyshells, and the scrutineers decision is final

  • All edges on the body especially window cut-outs must be sanded smooth. Repairs or extra reinforcing applied to the body shall be of such a nature as not to cause a hazard. i.e. no sharp metal edges or carbon fibre splinters etc. If a major part of the body is lost during a race, the damage must be repaired immediately in the pit area if ordered by the Race Director. At least one window on either side must be cut out of the body. This is to allow easy pick up of car when marshalling and better access to engine kill switch

Bumpers Back to Table of Contents / Top
  • Saloon cars must be equipped with a foam bumper (Purim material or similar). These bumpers must be fitted as per EFRA rules

  • All other classes must have a foam bumper with exception of F1 cars must have a foam bumper fitted with as much foam as possible

Cars Per Class Back to Table of Contents / Top
  • Only one car (engine & rolling chassis) per class per driver will be accepted.

  • The main chassis plate (i.e. the main structural member to which the other components are mounted) may only be changed with the consent of the Race Director. The essence of this is that a car cannot be replaced or substituted once entered into a days racing

Safety Back to Table of Contents / Top
  • No refuelling is permitted during racing or practice except in the pits/pit lane

  • Under no circumstances is refuelling to be carried out with the engine running

  • Anyone refuelling on the track will be disqualified

  • There will be no refuelling allowed during any qualifying race or final including warm-up time

  • Drivers are advised to have a small dry powder fire extinguisher to hand in their pits

  • Smoking will only be allowed in a designated area announced at the drivers briefing

  • Nobody under the age of 14 will NOT be allowed to marshal at meetings

Exhaust / Induction Noise Back to Table of Contents / Top
  • In practical terms no driver will be allowed to run with a car in any class making enough noise so as to cause problems for the club on whose circuit the event is being run. Kit Standard exhausts are usually sufficient.

  • Open exhausts or pipes are not allowed

  • The scrutineer / Race Director will check for excessive noise

  • The complete exhaust system must be kept within the body work of the car and should (where possible) exit downwards.

  • It must be understood by all drivers that any failure of the exhaust during a race or practice will require the car being removed immediately from the circuit until the fault is repaired

Drivers Briefing Back to Table of Contents / Top
  • A drivers briefing will be held prior to qualifying covering all aspects of the event that drivers need to know

  • ALL Drivers and Mechanics must attend the drivers briefing

Driving Standards Back to Table of Contents / Top
  • The Race Controllers will generally act as referees and may confer where necessary with the Race Director

  • If possible two referees will be stationed on the rostrum and penalties will be given that are appropriate to the offence during the race or afterwards as seen fit

  • Driving or otherwise behaving in a manner likely to cause injury to other drivers or spectators may result in disqualification from the meeting

Conduct Back to Table of Contents / Top
  • Any competitor or pit crew member causing a nuisance or using abusive language to another competitor, pit crew member or official will face the officials on the day. Appropriate action will then be taken and you may be removed / banned from racing

Race Meeting Format and Starting Procedure Back to Table of Contents / Top
  • For a full race day agenda - click HERE

  • Qualifying will consist of three ten minute rounds with the best result to count. The race director may decide to have extra practice rounds where possible. If the meeting is oversubscribed heat times may be reduced to 7 minutes. Finals may be reduced in length if necessary

  • Rolling Starts will be used for all Heats

  • Finals will be run to ‘single sided Christmas Tree’ format with 7 direct qualifiers into each final. The fastest 3 from the lower finals will be promoted to the next final

  • The main “A final” for Super Touring cars will be 25 minutes with all other A and B finals being 20 minutes in duration 

  • Finals will be started from grid positions located on the back straight.  You will miss Italy the first time you pass, however you must turn in to Italy, when you next approach

  • There must be at least a 3 meter gap between cars at the start of the final. (Most circuits now have start boxes painted on the circuit at about3 meter intervals, in which case these will be used)

  • Mechanics must move back away from the cars at the beginning of a Final when instructed by race control/start marshal

Wet Weather During Qualifying Back to Table of Contents / Top
  • The Race Director is responsible for the decision to stop a race in the event of rain. On the result sheets the Race Director must mark a heat WET when the heat was raced under wet conditions

  • Heats are generally considered to be “WET” when average lap times are approximately 20% slower than before due to rain or moisture on the track

  • When all drivers have had at least one dry heat, all results will be counted

  • When weather and time permits, the Race Director may decide to offer an extra heat to those drivers who did not have a chance to drive a dry heat

  • When, not all drivers have had a chance to run a dry heat, only the wet results will be counted. When continuation is judged to be senseless, or when the other drivers should be offered a fair chance to drive under dry conditions, the Race Director may decide to end a heat or cancel a complete heat

Scrutineering (Will / can happen out of the blue... ) Back to Table of Contents / Top
  • For all classes it is the onus of the driver to ensure their car comply with the rules. i.e. fuel tanks, weight, width, wings etc. Cars will be randomly checked and penalties may be incurred

  • Failing technical inspection during qualifying, results in the loss of that drivers best qualifying run

  • Failing technical inspection following any final, results in the loss of that drivers laps/time for that final and they will be placed in last position in that final

  • All cars must conform to the safety aspects and any official may carry out these checks. Final decisions will lie with the chief scrutineer.

  • All cars to be held in ‘Parc Ferme’ for the duration of the following heat, if possible including a transmitter pound.

Marshalling Back to Table of Contents / Top
  • Marshals will be those the precede the next race

  • Once you have finished your race, you place your car in front of race control on the bench and head straight out for your marshalling duty - you do NOT go back to your pitting area. If wet, and only when wet can you take your car and equipment back to the pits

  • You must attend your marshal points AS QUICK AS POSSIBLE! 

  • No mobile phones, food, cameras, sleeping or smoking is permitted in the marshal boxes

  • If you are not capable of marshalling you must inform the Race Director before the race meeting, you must also find a replacement marshal

  • You must act responsibly when marshalling, safety first ALWAYS

  • please be alert and reactive when marshalling - races can be lost due to bad marshalling

Touring Cars Back to Table of Contents / Top
  • The car body has to comply with the calculated scale dimensions 1:5 with the allowance of using the following tolerances

  • Length: within scale +/- 5%

  • Width: max. 395 mm measured at the widest point of the bodyshell Height: within scale +/- 5%

  • Tank capacity: 700 cm³ (including pipes to and from the carburettor and any fittings)

  • Minimum weight, without fuel: 10.000 g

  • Maximum weight, without fuel 12.000 g

  • All 1:5 cars have to be genuine scale in all details and proportions and be a fully detailed model of an existing 1:1 touring race car. If the allowed tolerances are used, then all parts of the model in that particular view have to be within the same sign (wheelbase-, length,- //wheelbase+, length+). Mixtures of car designs are not allowed. Only bodyshells that are approved by EFRA will be allowed

  • Minimum weight of the body is 500g (ready to race including wing/support under the wing if used and body side guards but excluding any air ducting or other optional parts/braces).

  • Weights are NOT allowed to be added to the body. They have to be properly fixed to the chassis and must cover the outer edge of the wheels at the centre of the axle when viewed from the top.

  • The side and rear windows may be cut out for cooling, it is not allowed to open them by cutting out only some holes.

  • It is not allowed to mould air channels into the side windows to guide air into the interior. The body shells have to be painted and all windows to remain clear

  • All parts of the car have to be covered by the body. Only the radio antenna is allowed to come outside. All openings in the body have also to be in the existing 1:1 race car

  • It is not allowed to modify the car body by cutting it over the marked trim lines or to widen it by heating it or parts of it

Wing / Spoiler
  • A single rear wing is permitted as long as it does not exceed the front view profile and the length of the car

  • The wing has to fit in a side ”profile box” measuring 60 mm x 60 mm per side and should not overhang the end of the car

  • Extension pieces extending past the main end plates are not allowed.


A bumper has to be fitted to the chassis. Bumpers have to be designed in a way that they fill the front of a car body completely and be a minimum height of 40mm.The material used has to be flexible like PU-RIM or other foams, that are used in 1:1 car construction to absorb impact energy. At no point may any part of inflexible material for bodyshell mounting protrude from the body more than 10mm. If an opening is created through the foam bumper for cooling air, the combined thickness of the foam (above and below the cooling hole/slot) must still be a minimum of 40mm in height.

  • Rim Diameter max.: 107 mm

  • Rim and fitted tyre diameter, front and rear max.: 136 mm

  • Rim and fitted rim and tyre width:

    • Front max.: 75 mm 

    • Rear max.: 80 mm

  • Only semi pneumatic rubber is allowed

  • Foam tyres are not allowed

  • GRP and PMT tyres are allowed

FG 4WD Sports Line Mini Class - FG 510 4WD Back to Table of Contents / Top
  • This class is strictly for 4WD Sports Line FG Mini’s, They must be kept totally standard as they come out of the box with no drilling, grinding or altering of the standard components what so ever.

  • The engines are to be totally standard Zenoah or CY 26cc Engines as supplied by the manufacturer, either 2 bolt or 4 bolt cylinders.

  • Absolutely no modifications allowed, and any replacement parts used during servicing must be genuine manufacturer’s standard original parts for the engine.

  • Spark plugs to be NGK CMR7H

  • Any commercial pump fuel and any 2 stroke oil is permitted

  • A foam bumper must be fitted to the front & as long as there is an overhang of foam from the plastic base this is accepted

  • No modifications to external or internal shock parts are allowed

  • Only GRP “XS” dry and “XR” wet range of tyres along with the previous “S” and “E” range of tyres (which have now been superseded) are allowed to be used on either black or white wheels. No other compounds are permitted.

  • In the event of a wet race Air filter & servo covers are permitted.

  • Due to Fuel leakage from Fuel Caps we are allowing any modification to the cap, but the breather must remain standard (Vent pipe from cap to back of the car with no devices in-between)

  • Car Weight to be a minimum of 10KG & Maximum of 12KG with empty fuel tank, 4 tyres, battery & Body shell fitted

  • The car must be a maximum width of 410mm

  • Only FG Mini shells are allowed, you must have cut outs in front side windows for marshal pick up & rear side window engine kill switch side

  • E sticker to be fitted near kill switch on body shell

  • Only a 10mm hole allowed in front screen, other window cut outs are optional

  • If your considering buying a new Fg Mini, the Trophy Specification version of the Mini is supplied with all the option parts above already fitted which makes it the cheapest route to enter this class. FG no: 155180TZ. 

  • These are quite simple rules, which mean that the car must be totally standard with no modifications to differentials, chassis, engines, exhausts, Air Filters or the standard components etc. There will be scrutineering on all cars prior to racing & at least one car per meeting will have the cylinder head removed to check for compliance to rules

  • If you have purchased your car on the second hand market, please ask the scrutineer to check your car for legality prior to racing as excuses like ‘I didn’t know, the previous owner assured me it was standard’ will not be accepted

  • The only optional exceptions to the above rules are as follows:

  1. Front Dog bones can be replaced with the FG CV upgraded shaft kit. Part Number: 68415

  2. Rear Lay shaft brake can have the lined brake pad upgrade kit. Part Number: 08449 or 06039/10

  3. Plastic gear holder can be replaced with the Alloy upgrade. Part Number: 07439

  4. Carbon Side Guards are allowed in any material.

  5. Any servos can be fitted as long as the original mounts & layout are used.

  6. Any shock oil is allowed to be used to suit car set up.

  7. Any FG Shock Springs are allowed,

  8. Any battery can be used.

  9. Front Body mount Kit FG or Similar. Part Number: 07154/02

  10. Any FG gear ratios can be used but NO Over driven front or rear diff gears.

  11. 9.5mm Steel Wheel squares can be fitted to front drive train Part Number: 08407

  12. Bearings maybe replaced with any brand of steel bearings (ceramic bearings are banned)

  13. The fuel tank cap can be modified or changed but the total capacity of the tank can only be a maximum of 700cc.

  14. Cars can use the FG M8 axles (and changed to M8 if originally supplied as M6). FG-6079/05

  15. The plastic ball joints can be replaced with any brand but must remain plastic.

  16. The clutch must remain standard but the spring can be any colour with a maximum thickness of 2.7mm

  17. The optional FG steel exhaust manifold is allowed: FG-08114/01

  18. Fuel tank and breather pipes may be changed but must follow the same route as the originals.

  19. The optional FG small aluminium engine mount: 06485/01

  20. The optional FG large aluminium engine mount: 66215

4x4 On Road Cars - FG 530 4WD Back to Table of Contents / Top

The FG 530mm 4wd saloon with the standard 26c Zenoah Engine, clutch, exhaust, air filter and a touring car body.

Optional allowed parts:

  • 08418 - Front bumper kit

  • 4483/01 - Front body mount kit

  • 7439 - Allow gear carrier

  • 68415 - Front drive shaft kit

  • 8407 - Steel front drive squares

  • 8450/08 - Tuning front brake kit

  • 6044/01 - Fibre front brake discs

  • 6042/05 - Steel rear brake square

  • 68408 - One way front diff

  • 68214 - POM Rear damper tower

  • 66215 - Allow large engine mounting

  • 6485/01 - Alloy small engine mounting

  • 7071/06 - 5mm rear roll bar

  • Due to Fuel leakage from Fuel Caps we are allowing any modification to the cap, but the breather must remain standard (Vent pipe from cap to back of the car with no devices in-between).

  • ALL tyre compounds from both GRP and PMT are permitted

  • All vehicles must conform to all the safety regulations

Other Regulations Back to Table of Contents / Top

If any issues arise on the day (anything including technical rules, organisation/running of the event etc) the committee present at the event can hold a meeting and resolve the problem. The committee also have the power to amend any rule for the good of the sport and fair play between all drivers if for unforeseen circumstances a problem arises.


The overriding theme for the South Radio Control Car Club Championships is fun, and we hope every driver competing in the series has a great time during racing, but if anyone thinks there’s something that can be improved or should be changed, just speak to one of the officials and we’ll do our best to make everyone happy!.

BRCA Noticeable Differences Back to Table of Contents / Top
  • 4x4 On Road Cars - All tyre compounds from both GRP and PMT are permitted (BRCA is a controlled PMT tyre)


Rule Amendments and Updates Overview Back to Table of Contents / Top

  • 19/08/21 - Initial set of rules published

General Rules
Tyres Rules
Engine Rules
Menu / Top
Driving Standards
Cars Per Class
Exhaust / Induction Noise
Drivers Briefing
Race Meeting Format
Wet Weather During Qualifying
Touring Cars- RWD / 2WD
FG 4WD 510 Mini
FG 4WD 530 Touring Car
Trucks - TBC
Other Regulations
Noticeable Differences For BRCA
Rule Amendments and Updates Overview
Formula One - TBC
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