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CHD MINI CLUB CLASS RULES 2017-2019 (Version Web2017-01)


1. Mini class: Closed club championship

2. Visiting drivers to bring a Dyno sheet & comply with our rules for a trophy.

3. If no dyno sheet the visiting drivers will start at the back.

4. CHD club drivers will be re-scored after the event to exclude the visiting drivers from the

club points.

5. E.g. Visiting driver won race 1 and CHD driver was 2nd. With the rescoring the CHD driver that came 2nd will be re-scored to 1st.

If a car is excluded because of illegality on the night, the other competitors will not be re-scored.


The concept of this class is to formula where the youngsters can join oval track racing. The vehicle shall remain standard in all aspects unless modifications are specifically stipulated by the regulations. Only CHD competitors between the age of 10 and 18 without a legal driver’s license when joining the class will be allowed in this class. A competitor can stay in this class for the remainder of the season in which he/she turns 18.

In interpreting regulations and specifications “what is not specifically permitted is disallowed”. You may only do something if the rules say you may.


1. Effective braking is mandatory on all 4 wheels. No brake bias is allowed.


1. Radiators shall be mounted within the engine compartment of vehicles.

2. No onboard radiator spraying equipment is permitted.

3. Radiators – 2 x mini heater radiators allowed

4. After market radiators can be used with original fan. Electric fans allowed


1. Only a Mini body like those that was sold in SA between 1960 & 1985 may be used in its

standard form.

2. Fiber glass bonnet and boot is optional.

3. Fiber glass skin over the rest of the body accept the roof is allowed for cosmetic reasons

only, but panels to stay intact and not to be lightened.

4. All body parts to remain standard and only the doors may be cut on the inside to fit the

sissy bars.

5. All doors to remain operational.

6. Wheels must be covered by body panels.

7. No wings allowed.


1. Mini engine of not more than 1100 + 60 thou (0.060) may be used in standard form.

2. The engine is to remain completely standard with intake (1 and a half inch). Exhaust

manifolds may be replaced with a branch. Only branches made by Cowley Exhaust or


3. Any 73mm pistons from a road going car or LDV may be used in a Mini engine.

4. No modification may be made to the cylinder head or camshafts.

5. The standard clutch assembly & gearbox are to be used.

6. The engine is to remain in its original position.

7. A Mini S.U. (37/38) side draft may be used in standard form (1 and a half inch – single). An original Uno carburator to be used on an Uno engine.

8. A standard exhaust max 48mm outside, standard mounting full length must be used.

9. Air cleaners are optional.

10. 100% Full throttle operation.

UNO 1100

1. These cars may also be used.

2. The original engine mountings must be strengthened.

3. A thrust mounting may be added.

4. Tyres: Maximum width: 155mm x 13”

5. Only local street tyres that is available to the public at all times and that can be bought over the counter may be used.

6. No road going semi slicks tyres are allowed.


1. No limited slip differentials are allowed.

2. Only standard drum brakes may be used on all four wheels + Uno standard brakes.

3. Differetial ratios may be changed to suit different circuits. Locking is not allowed. – Only

standard Uno + Mini differential ratios may be used to suit different circuits.

4. Only 1100 mini drums may be used (not with build in spacers)


1. No lowered suspensions will be allowed & only the original mounting points will be allowed.

No alterations may be made to the sub frames.

2. No rose-joints are allowed. No alterations to wishbones or shock mounting.  Any Munro /Armstrong / Gabriel shocks allowed. Shocks must be used in Standard form as it was fitted to an original Mini/Uno.

3. No spacers on wheels allowed.

4. The front left lower control arm may be extended with 10mm.


1. Only 10” rims may be used.

2. Any 145 SR 10 tyre may be used. No retreads.

3. A maximum rim width of 4 and a half J is allowed. (4.5”)

4. Any road legal tyre 145/10 locally available.

5. Only steel or epoxy rims (trailer) may be used. On the rims the maximum dish offset –

measured from the outside of the rim to the bolt height of the dish may not be more than



1. This is a non-contact class.

2. Bumpers will be for protection purposes of young drivers only.

3. The crankshaft may not be stroked.

4. Only normal pump fuel may be used.

5. Only an original Mini distributor may be used. It may be changed to electronic. (Motordrive, KB Turbo’s) No electronic management systems allowed.

6. Sissy bars and external bumpers are compulsory.

7. Cars are not allowed to produce more than 40Kw & 100Nm torque measured on the


8. Carburetors can be marked during scrutineering.

9. Wheel studs can be up to 12mm/14mm.


1. Bumpers to be mounted to roll cage with 10 degree “weakening bend” 200mm from


2. Bumper thickness 38 x 2mm.

3. Only 4 mounting points are allowed.

4. All cars need to ad hear to safety regulations. If not, car will not be allowed to race. No


5. Sump, gearbox and diff plug are to be wired and all vehicles will have a drip tray fitted

underneath the engine.


1. Cars must be taken to 1st Performance (Killarney) for Dyno testing.


Minimum: 650kg including driver.

When impounded and the distributor is loose the driver will be excluded immediately &

he/she will lose all point accumulated for the season.


Maximum – 105 dBA


At least 6 cars are required at event to qualify for club championship points, however should not

more than 40% of the events in the season have less than 6 cars entered, those events will still count as long as there is an average entry of at least 6 cars throughout the season.

In the event that this does not occur, the event with the fewest entries will be removed from the seasons scoring, and the average entries recalculated to try and obtain the average of more than 6 entries for season.

Should there still be an average of less than six cars for the season the class will not qualify for club championships status.


The committee or the technical rep are responsible for pulling of cars for checking – no driver can protest another driver’s car.

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