Rules and Regulations
Contents
Preamble
The following definitions and general requirements
governing Historic Cars have been adopted to facilitate
the organisation of competitions and meetings in which
such vehicles are involved.
Events for vehicles within
the 5th Category may be programmed to cater for:
- group racing: specific individual groups within the
category; or
- combined group racing: a combination of several specific
individual groups; or
- divisional racing: a combination of vehicles from
any of the individual groups with eligible vehicles
selected on the basis of their perceived compatibility
in performance potential. Any number of events of this
type may be programmed at any one meeting to divide
the overall entry into compatible performance divisions.
Engine capacity classes may be incorporated
in any of these types of events or an overall engine
capacity limitation placed on any event. It would generally
be preferred that any engine capacity limitations selected
be consistent with those commonly in use during the
relevant period.No specific limitations are imposed
on vehicle combinations which will be permitted in combined
group or divisional events but fields should consist
of vehicles which are generally compatible in performance
potential.CAMS will hold the absolute discretion to
disallow any proposed vehicle combinations which it
considers might create safety hazards arising from speed
differentials or visibility problems. It would for example
not generally be appropriate to combine events for Groups
P and Q with those for earlier vehicles because of the
speed differential involved or to combine events for
Group Na, Nb or Nc with other groups because of speed
differentials.Within any group or combined group event,
it will be permissible to include by invitation individual
vehicles from other groups where such action is considered
desirable to achieve the most performance-compatible
field. Where such action is taken notation should be
made in the program to record the subject vehicles?
correct group classification and the event should be
described in the program as including vehicles from
other groups by invitation.When programming combined
group or divisional racing events, consultation with
the state member of the Historic Commission or Historic
Eligibility Committee is encouraged to assist determination
of the most compatible mix of vehicles.
The express purpose of these regulations is to ensure
that vehicles in the various groups compete in a condition,
mechanically and visually, compatible with the period
of racing being portrayed. ?Updating? in whatever form
is not condoned. CAMS reserves the right to reject any
vehicle which it considers not within the spirit of
these regulations. Vehicles must conform with the appropriate
group date specification in concept and in detail. Where
any doubt exists between Historic regulations and the
original period specification, the latter will take
precedence.
CAMS in its absolute discretion reserves the right
to accept or reject any vehicle for Historic classification.
The issue of all log books must be firstly authorised
by the Historic Eligibility Committee through CAMS National
Office. A central register of Historic vehicles in all
groups is maintained, and the issue of all Historic
log books is carried out through CAMS National Office.
All new Historic Vehicle Log Books being issued are
accompanied by an Historic Certificate of Description
which is a Recognition Certificate for the vehicle concerned.A
Temporary Permit to Compete may be issued at the sole
discretion of CAMS, in circumstances where a vehicle
is visiting temporarily from outside of Australia, and
otherwise at the sole discretion of CAMS.(Competitors
should be aware of the requirements of Schedule L -
Vehicle Log Books.)
CAMS reserves the right to classify, withdraw classification,
or re-classify a vehicle to a group which in its absolute
discretion CAMS believes it conceptually belongs.
Before commencing construction of a special or the
acquisition and/or restoration of a vehicle, it is most
advisable that CAMS National Office or the State Historic
Eligibility Officer be contacted regarding eligibility
of the said vehicle.
CAMS may approve re-creation
of significant vehicles which have been destroyed under
the following conditions:
- there may be only one re-creation;
- CAMS must approve in principle vehicles prior to the
commencement of the project. It should be noted that
this does not in itself guarantee the acceptance of
the vehicle which shall always be the subject of inspection
and approval by CAMS when completed;
- there must be justification for the project, ie, it
must be a significant vehicle, and only a faithful re-creation
will be considered.
Three-wheeled vehicles participating in events exclusively
for Historic vehicles are exempted from NCR 12
The original style of paintwork and livery is encouraged.
The name of the driver may be shown on the vehicle,
appearing once on either side in a position below the
window line, in a size not larger than 40mm by 300mm.A
club badge, of an acceptable motoring club, can appear
on the vehicle. Each badge must be not larger than 150mm
by 100mm and must be placed below the window line. Only
two such badges are permitted.The territory of origin
of the driver may be shown on the vehicle. Each sign
must be not larger than 100mm by 150mm and must be placed
below the window line. Only two such signs are permitted,
one on each side of the vehicle.No other advertising
material or sign is permitted unless evident in the
applicable group period. (See relevant Group Articles.)
Additional information and advice is provided in the
Guide to Historic Racing which is available from CAMS
National or State Offices.
General
Log Books
The production of a properly entered
Historic vehicle log book issued by CAMS is required
by NCR 150.
Vehicles in all Historic groups are to comply with the
requirement of Schedule L ? Vehicle Log Books.
In addition:
Vehicle Log Books must be endorsed
for the 5th Category and/or titled ?Historic Vehicle
Log Book?, and
Vehicles must comply with their Certificate
of Description (where such a document has been issued),
such Certificate of Description being a Recognition
Certificate referred to in Schedule L.
A Temporary Permit
to Compete
A Temporary Permit to Compete, specific
to the 5th Category ? Historic Cars, issued by CAMS
is acceptable as an alternative to the possession of
an Historic Vehicle Log Book as defined in 2.1 above.
Safety
Vehicles in all Historic groups - while competing
in events specifically limited to such vehicles - are
exempted from CAMS requirements in respect of fire extinguishing
systems (but not fire extinguishers) (refer Schedule
H), scatter shields, roll bars (except Groups Na, Nb,
Nc and Sc), safety-harness, minimum bodywork, towing
eyes, firewalls (although the fitment of these devices
is in some cases desirable), starter motors, reverse
gears and safety fuel tanks.
These exemptions will not be applicable to any vehicle
which was originally equipped with any of the above
mentioned equipment or design features.
Vehicles using alcohol fuels must carry a CAMS-approved
fire extinguisher, applicable for use on an alcohol
fire.
All tanks equipped with a quick-release filler cap shall
have a secondary locking device or be wired shut.
CAMS recommends that competitors wear an approved full-face
helmet when driving in open vehicles (refer Schedule
D).
Concerning roll bars, Historic vehicles (except Groups
Na, Nb and Nc), are subject to the following possibilities:
- no roll bar (unless the vehicle was originally equipped
with one); or
- a roll bar to the group period specifications; or
- a roll bar complying with Schedule J; or
- a roll bar specifically approved by CAMS.
Fuel
The specific requirements for each group
will be found in the relevant Regulations. It is mandatory
that vehicles using alcohol fuels (where permitted)
also carry a symbol in the form of the letter ?A? in
white on a red circle of approximately 115mm diameter
with a white border. This symbol must be placed adjacent
to the racing number on each side of the vehicle, and
at the fuel filler cap.
Terminology
The term ?style?, where used in relation to wheels,
refers to Sankey, wire, cast steel centre etc.
By ?original? is meant a component
which is in all respects identically similar to that
originally fitted, as produced by the manufacturer who
produced the original component/s, and is indistinguishable
from it in all respects.
By ?period? is meant the applicable
group period of the vehicle in question.
Supercharging
Vehicles in this category fitted with superchargers
are not subject to the 1.7 factor as to displacement.
Competition Numbers
Groups J, K, Lb & Lc are exempted
from the requirements as to background specified in
Schedule K. Applications for exemption may be made in
individual cases for other vehicles where the specified
vehicle competed in such visual form during the group
period.
Group Na is designed to provide a forum
for competitors to race pre-war production touring cars
and early post-war production touring cars in a form similar
to club racing of the period. To this extent, the modifications
permitted are those that are not intended to radically alter
the individual vehicle?s character or appearance and will
be of an improved performance road car nature, as opposed
to making the vehicle totally dedicated to outright competition;
the concept being that the vehicles could be driven comfortably
to and from the race meeting.
An important consideration in forming
these Regulations was the need to provide eligibility rules
which will require a minimum of administration, particularly
at race meetings.
People wishing to race vehicles of a
more highly-modified nature should look to other categories.
Eligibility
Production touring cars as recognised by CAMS, commercially
available in Australia prior to 31 December, 1957, with
the inclusion of certain run-on models. The vehicles
must be of a touring form providing adequate normal
seating for four or more adult persons. Vehicles classified
in this group will not necessarily have a racing history.
Factory-built competition variants of standard production
vehicles or GT-type vehicles are not eligible for this
Group.
Classes
Vehicles shall compete in the following
capacity classes:
- Up to 1100cc
- 1101 - 1500cc
- 1501 - 3000cc
- 3001cc and over
Limited modifications may be made.
These should be of a period nature and not out of character
with the vehicle or group period.
Eligible Vehicles
A list of vehicles eligible for this
group will be published by CAMS from time to time.
Specifications
Individual specifications will be produced for
each type of vehicle, determining its specifications
and allowable modifications.
Body
Bodywork
The bodywork, body fittings and interior
trim in its entirety must be supplied by the manufacturer
save that wheel nave plates must be removed. Bumper
bars must be retained.
Cockpit
The cockpit must be original save that
floor coverings may be removed. The steering wheel may
be replaced by another of the period style but the rear
seat must be retained in all respects including location.
Vehicles must be fitted with original-type
or CAMS-approved seats (refer to page 8-28). Some extra
padding is allowed. Seats must be trimmed in the same,
matching or complementary colours as other trim on the
vehicle.
Original instruments must be intact.
Additional instruments of a period type may be fitted.
Electronic tachometers may be substituted for mechanically-driven
units, provided they are compatible in face, style and
size with the other instruments.
Chassis
Chassis or chassis-body unit must be original
and unmodified.
Permitted
Modifications
Mechanical modifications may be made,
provided that the following restrictions are observed:
Engine
- Cylinder block and head must be original, or a CAMS-approved
alternative.
- Internal components of the engine are free save that
the crankshaft stroke must be original.
- The cylinder bore may be increased by a maximum of
1.5mm beyond original dimension.
- Cylinder head/s may be modified provided such modification
is effected only by the removal of metal.
- Toothed belt drives are not permitted.
- Dry sump lubrication is not permitted, unless originally
fitted.
- The exhaust system is free but should be of a type
compatible with the period.
- The cooling system must remain as standard, save that
the radiator core is free as to thickness. Electric
fans may be added.
Induction
Carburettors or fuel injection systems
must be of the make and model originally available in
the period. Bore size is free. Superchargers are not
permitted unless part of the original specification.
Multiple carburettors may be fitted in the ratio of
one choke per two cylinders.
Inlet manifolds are free except that they must be of
a type compatible with the period.
Transmission
Gearbox casing, gear selection mechanism and the number
of forward ratios must be original. Internal components
are otherwise free.
External components of the final drive assembly must
be unmodified from the original specification. Internal
components are free. Limited slip or locked differential
are not allowed unless part of original specification.
Brakes
The original form and type of braking
system shall be employed. The major brake dimensions
of drum brakes (ie, internal drum diameter and width)
shall be as supplied as original equipment with a tolerance
of 3mm permitted on drum diameter. Backing plates may
be ventilated and/or fitted with cooling ducts.
Mechanical operation may be converted to hydraulic operation.
In the case of disc brake systems, the brake discs and
callipers must be original.
Drum brakes may not be replaced by disc brakes. Dual
or tandem master cylinders may be fitted. The installation
of power brake assistance is permitted.
Suspension
The suspension must be unmodified from
original specifications, save that spring rates, ride
height and damper settings may be altered.
Suspension pickup points may not be modified. Eccentric
or modified suspension components that alter the dimensions
or geometry from original specifications are not permitted.
Externally adjustable shock absorbers are not permitted.
Fore and aft axle location may be improved but transverse
location may not be altered.
Fitment of period-type anti-sway bar to the front suspension
is permitted.
Spherical or ?Rose? type joints are not permitted.
Wheels and Tyres
Wheels are required to be original in diameter
and style (ie, steel wheels may not be replaced by alloy
wheels). Rim width may not exceed 5? unless originally
specified by the manufacturer; in which case the rim
width must be as originally supplied.
Tyres must have an aspect ratio of at least 65 percent
as determined by the Tyre and Rim Association manual.
(Refer Na, Nb, Nc, Sa, Sb and Sc Tyre List, page 8-30.)
Electrical Equipment
All electrical equipment must be unmodified
from the original specifications and fully operative.
The dynamo/generator may not be replaced by an alternator.
Electronic ignition devices are not permitted.
Safety Requirements
Vehicles shall comply with all relevant requirements
of Schedules A, B and C.
A laminated windscreen is required in races and in multiple
speed events. However, in the event that a laminated
screen is unavailable, approval may be given on individual
application to CAMS for the fitment of a Lexan or Perspex
windscreen.
CAMS-approved rollover protection and seat belts are
compulsory. A roll bar or half cage conforming with
Schedule J (Type 3 or Type 4) is required to be fitted
to all vehicles. Roll cages are allowed. Side intrusion
bars and other additional braces are permitted provided
they do not pass through any part of the bodywork. Roll
bar assemblies must not be installed so as to become
a de facto chassis used to improve the torsional or
beam strength of the original chassis. Head rests are
strongly recommended but must be supported by the same
structure that supports the driver's seat.
Foam-filled flexible fuel tanks are strongly recommended.
Advertising
No advertising material or sign will be
distributed from or carried on any vehicle in this category
provided that this rule shall not apply to the manufacturer?s
usual name plate. CAMS reserves the right to permit also
the display - in neat, unobtrusive lettering - of the name
of the entrant and/or the driver and/or the State of his
residence on the scuttle or the side of the vehicle. The
total area of all such signs shall not exceed 75mm in height
and 600mm in length on each side of the vehicle.
Club badges of an acceptable motoring club may appear on
the vehicle. Each badge must be not larger than 150mm by
100mm and must be placed below the window line. Only two
such badges are permitted.
The territory of origin of the driver may be shown on the
vehicle. Each sign must be not larger than 100mm by 150mm
and must be placed below the window line. Only two such
signs are permitted.
No other signs may be displayed.
Body
- The body must be of a touring hard-top form, and must
provide adequate normal seating accommodation for four
or more adults.
- Vehicles in the above-mentioned Classes A, B, C, D,
and E must have four doors unless they have been homologated
by the FIA,or are otherwise specifically approved by CAMS,
in a two-door version. Vehicles in Classes F and G must
have at least two doors.
- The bodywork, body fittings and interior trim in its
entirety must be as supplied by the manufacturer except
only that wheel nave plates must be removed, additional
instruments fitted and the steering wheel replaced: provided
that the replacement wheel is not less than 330mm in diameter
(unless the original wheel was of a lesser diameter, in
which case a replacement of at least equal diameter to
the original is acceptable).
- The use of undertrays, fairings etc, designed to improve
the aerodynamic form of the automobile shall not be permissible
unless supplied as standard equipment.
- The original rear seats must
be retained in all respects, including location.
- The driver's seat may be replaced with a CAMS-approved
driving seat.
- The original passenger seat must remain in place - see
Schedule C of Section 6. Such seats must be trimmed in
the same, matching, or complementary colours as other
trim on the vehicle.
- On vehicles fitted with a bench front seat as original
equipment, the whole seat may be removed, and the passenger
seat must be a bucket seat from, eg, a comparable Falcon
Futura, Holden Premier etc. If the original equipment
bench seat is retained, modification of the driver's portion
of that seat is free so long as the origin of the seat
may be determined.
- Restoration of original trim is permitted, but should
be as near as practicable to original specifications.
Floor coverings may be removed. Insulating material may
be added.
Permitted
Modifications
Mechanical modifications may be made,
provided that the following restrictions are observed:
Engine
- The original type of cylinder block and crankcase
must be employed. The bore may be varied and/or the
stroke reduced provided that the swept volume of the
engine remains within the same cubic capacity class
as that within which the engine came as supplied by
the manufacturer (eg, EH Holden under 3000cc, Morris
Cooper S under 1300cc).
- The original type of cylinder-head casting must be
employed. The cylinder-head may be modified provided
that such modification is effected only by the removal
of metal.
- A dry sump is not permitted unless fitted as original
equipment on the make and model of the vehicle of the
period.
- The radiator cooling fan may be removed; electrically
powered fans are permitted.
Induction
Forced induction or fuel injection is
not permitted, unless such induction method was employed
as standard on the make and model of vehicle by the
manufacturer concerned.
Later models of carburettors which were available in
the period are acceptable, even with different throat
sizes, provided that the outward appearance is the same.
Carburettors of a make not available in the period are
unacceptable.
Transmission
The original type of gearbox and final drive
assemblies including housings as supplied by the manufacturer
for the make and model concerned shall be employed.
The final drive assembly is otherwise free, save that
the original housing must be retained (although it may
be subject to any machining operations provided always
that its origin is able to be established).
The number of gear ratios may not be changed.
Suspension
The original form and type of suspension only
shall be employed (eg, a semi-elliptic leaf-spring suspended
live rear-axle may not be replaced by a coil-spring
suspended De Dion type, and so on).
At all times, the original form of steering and suspension
joints must be employed, and in particular, may not
be replaced by spherical or Rose type joints.
Brakes
The original form and type of brake system shall
be employed (eg, drum brakes may not be replaced by
disc brakes). The major brake dimensions (ie, internal
drum diameter and width) shall be identical with the
dimensions of these components as supplied as original
equipment by the manufacturer concerned; provided that
overall variation in the diameter of such drums of not
more than 3mm shall be permissible. Modifications to
disc brakes are limited to the freedom to fit alternative
callipers of a type available pre-1965. Dual circuit
braking systems are permitted, as is installation of
power brake assistance. Brake lining material and hoses
are free.
Wheels and Tyres
The wheels shall be either as supplied
by the manufacturer or of a type approved by CAMS and
which is in harmony with wheels used prior to 31 December,
1964. At all times the original wheel diameter shall
be maintained, and the width of the rim may be increased
by not more than 1? over the original, subject to an
absolute maximum width of 6?. Aluminium alloy type wheels
may be fitted, but only of a design and style available
prior to 31 December, 1964. Mudguard flares or extensions
are not permitted unless they were fitted as original
equipment by the manufacturer.
Tyres may not protrude outside the bodywork, but otherwise
track is free.
Tyres must be of an approved type of radial or cross-ply
construction with a minimum aspect ratio of 60 percent
as determined by the Tyre and Rim Association. (Refer
Na, Nb, Nc, Sa, Sb and Sc Tyre List, page 8-30.)
Safety Requirements
A laminated windscreen is required in all vehicles.
However, in the event that a laminated screen is unavailable,
approval may be given on individual application to CAMS
for the fitment of a Lexan or Perspex windscreen.
A roll bar or cage conforming with Schedule J (Type
4 or 5) is required to be fitted in all vehicles. Side
intrusion bars and other additional braces are permitted
provided they do not pass through any part of the bodywork.
The roll bar or cage must not be used as a means of
increasing the structural strength of the vehicle.
Foam filling of fuel tanks is permitted. The fuel tank
may not be moved from its original location.
General
The vehicle shall be required to comply with such requirements
of Schedules A, B and C as are applicable and not in
conflict with this Group.
Electrical equipment in conformity with the requirements
of Group 2A is required to be fitted.
A high standard of presentation will be insisted upon
at all times. Any vehicle considered to be of inappropriate
standard will be rejected.
At all times, the onus of proof of eligibility of the
vehicle and/or components whether options or not, will
be the responsibility of the owner, by way of homologation
papers, parts manuals, workshop manuals etc. In marginal
cases, proof may be required to be produced to the effect
that a vehicle of the same model was produced prior
to 31 December, 1964.
Advertising
No advertising material or sign will be
distributed from or carried on any vehicle in this category
provided that this rule shall not apply to the manufacturer?s
usual name plate. CAMS reserves the right to permit also
the display - in neat, unobtrusive lettering - of the name
of the entrant and/or the driver and/or the State of his
residence on the scuttle or the side of the vehicle. The
total area of all such signs shall not exceed 75mm in height
and 600mm in length on each side of the vehicle.
Club badges of an acceptable motoring club may appear on
the vehicle. Each badge must be not larger than 150mm by
100mm and must be placed below the window line. Only two
such badges are permitted.
The territory of origin of the driver may be shown on the
vehicle. Each sign must be not larger than 100mm by 150mm
and must be placed below the window line. Only two such
signs are permitted.
No other signs may be displayed.
Spirit of
Regulations
It is emphasised that the purpose of this
category of racing is to emulate, as far as is practicable,
racing of touring cars under Appendix J regulations which
were current until 31 December, 1964. Under the spirit of
these regulations, over-restoration of vehicles, including
the use of technology, parts or equipment not available
within the period in question, are not acceptable and will
render the vehicle ineligible. The Historic Eligibility
Committee will interpret these regulations and determine
any eligibility matters relating thereto in accordance with
this spirit.
Group Nc is an historic group introduced
on 1 January, 1995, to cater primarily for vehicles of a
make and model which competed in Australia between 1 January,
1965, and 31 December, 1972 in either the Australian Touring
Car championship and in races specifically for 3rd Category
Group C Improved Production Touring Cars.
During the 1965-1972 period the rules
for the vehicles evolved significantly, therefore the Group
Nc rules have been established to enable competition under
a common set of rules which reflect the nature of top-level
car racing in the period.
It is envisaged that most vehicles in
this class will not have a racing history and these are
acceptable provided they are accurate in detail both mechanically
and visually. Vehicles with a racing history may be presented
in the most predominant form in which they were raced in
the period, including the original sponsor signage, even
though this specification may not fully conform with these
rules.
A list of eligible vehicles and vehicle
specification sheets for the more popular models are under
preparation and will be available from CAMS.
Eligibility
Touring Cars of a make and model which competed in
Australia between 1 January, 1965 and 31 December, 1972
in either the Australian Touring Car Championship or
in races specifically for 3rd Category Group C Improved
Touring Cars.
Vehicles shall compete in the
following capacity classes:
- Class E Up to 1500cc
- Class D 1501cc - 2000cc
- Class C 2001cc - 3500cc
- Class B 3501cc - 5000cc
- Class A Over 5001cc
Owners of recognised vehicles with a competition history
during the period are encouraged to present the vehicle
in its original format evident at a given point in its
history. Historic precedence will prevail over the following
regulations with regard to these vehicles. Proof of
this precedence falls to the owner and acceptance of
it is at the absolute discretion of CAMS.
For a vehicle to be constructed, approval must be given
by CAMS. The applicant must provide proof that the particular
make and model competed in races described in 1.1 above.
A comprehensive detailed specification of each make
and model and the permitted modifications for that vehicle
will be provided upon approval for construction being
granted by CAMS.
Body
The bodywork, fittings and interior trim
in its entirety must be as supplied by the manufacturer.
Body Modifications
Body modifications may be made, provided that
the following restrictions are observed:
- The inner lip of the wheel opening may be folded back
for tyre clearance.
- Mudguard extensions may be used if homologated.
- The driver's seat may be replaced with a CAMS-approved
racing seat.
- The steering wheel may be replaced with a sports steering
wheel of 330mm minimum diameter.
- Floor coverings may be removed.
- The use of under trays, fairings etc designed to improve
the aerodynamic form of the vehicle are not permitted
unless supplied as standard equipment for the make and
model.
- If brake cooling ducts or scoops are fitted, they
must be separated by a minimum of 300mm, so as not to
form an aerodynamic aid and their sole function shall
be to assist in the supply of air to the brakes.
- Additional instruments may be added providing all
original instruments and switches remain intact and
that additional equipment is fitted to a separate panel.
Permitted
Modifications
Engine
Mechanical modifications are permitted
subject to the following restrictions:
- The original type and design of cylinder block and
crank case must be employed. The bore may be increased
to a maximum of 1.5mm, the stroke must remain standard
as specified for the make and model.
- Dry sump lubrication systems are not permitted unless
fitted as original equipment (lubrication may be modified
and additional cooling provided).
- The original type and design of cylinder head casting
must be employed; it may be modified provided that such
modification is achieved only by the removal of metal.
- Electronic ignition devices are not permitted unless
fitted as original equipment.
Induction
Fuel injection is not permitted unless
fitted as original equipment.
Carburettors of a make and model not available during
the period are not permitted.
Transmission
The original type and design of transmission
and drive train assemblies including the number of forward
and reverse ratios, assembled and operating as originally
supplied by the manufacturer shall be retained. The
use of alternate ratios is permitted. Any form of locking
differential is permitted. Fully floating hubs are permitted.
The gear lever may be modified but the original shift
pattern must be retained.
Suspension
The original configuration of suspension
whether by leaf spring, coil spring, torsion bar, air,
rubber etc for the make and model must be retained.
The following modifications are permitted:
- Modifications to ride height are free; shock absorbers
are free.
- Additional control arms and equipment may be added
but must not override the original component function.
- Spherical joints may not be used to replace existing
components.
- The original wheelbase dimensions must be retained.
The track may be increased by not more than 50mm.
Brakes
The original form and type of braking
system must be employed, eg disc/drum.
Components may be replaced with those from another model
from the same vehicle manufacturer produced before 31
December, 1972, provided there is no increase in the
swept area of the disc or drum. Dual/tandem master cylinders
may be used. Brake bias must not be adjustable from
the driver's compartment.
Wheels and Tyres
Wheels may be replaced with period style alloy
wheels. Maximum rim width permitted is:
- Class A and B maximum 8 inches
- Class C and D maximum 7 inches
- Class E maximum 6 inches
The same diameter wheels must be
those used on the model during the group period. Tyres
must be of approved tyre radial or cross-ply construction
with a minimum aspect ration of 60 percent as determined
by the Tyre and Rim Association. (Refer Na, Nb, Nc,
Sa, Sb and Sc tyre list, page 8-30).
Cooling System
The radiator may be replaced but must
retain its original location and support panel opening.
The radiator cooling fan may be removed. An electric
fan may be fitted.
Fuel Tank
The fuel tank may be foam-filled or
replaced with a tank of the same dimensions and capacity
to the same location.
Safety
Requirements
A laminated windscreen is required to be fitted in
all vehicles.
A roll cage conforming with Schedule J is required
to be fitted in all vehicles. Side intrusion bars and
other additional braces are permitted provided they
do not pass through any part of the bodywork. The roll
cage must not be used as a means of increasing the structural
strength of the vehicle.
Foam filling of fuel tanks is permitted. The fuel tank
may not be moved from its original location.
Advertising
No advertising material or sign may be distributed
from or carried on any vehicle in this category provided
that this rule shall not apply to the manufacturer?s usual
name plate. CAMS reserves the right to permit also the display
- in neat, unobtrusive lettering - of the name of the entrant
and/or the driver and/or the State of his residence on the
scuttle or the side of the vehicle. The total area of all
such signs shall not exceed 75mm in height and 600mm in
length on each side of the vehicle.
Club badges of an acceptable motoring club can appear on
the vehicle. Each badge must be not larger than 150mm by
100mm and must be placed below the window line. Only two
such badges are permitted.
The territory of origin of the driver may be shown on the
vehicle. Each sign must be not larger than 100mm by 150mm
and must be placed below the window line. Only two such
signs are permitted.
No other signs may be displayed.
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