20 dirt track - Motorcycling Australia

20 dirt track - Motorcycling Australia
2014 MANUAL OF MOTORCYCLE SPORT
20
Chapter contents
20. DIRT TRACK
DIRT TRACK
Application of Chapter ..................................................................................................................................................................................................................................1
SECTION 20A: AUSTRALIAN CHAMPIONSHIPS ......................................................................................................................................................................................1
20.1
CATEGORIES FOR SENIOR AUSTRALIAN DIRT CHAMPIONSHIPS........................................................................................................................1
20.2
CATEGORIES FOR JUNIOR AUSTRALIAN DIRT TRACK CHAMPIONSHIPS ...........................................................................................................1
20.3
CHAMPIONSHIP MEDALLIONS AND TROPHIES .......................................................................................................................................................2
SECTION 20B: COMPETITION CLASSES..................................................................................................................................................................................................2
20.4
SENIOR COMPETITION CLASSES ..............................................................................................................................................................................2
20.5
JUNIOR COMPETITION CLASSES ..............................................................................................................................................................................2
SECTION 20C: COMPETITION RULES ......................................................................................................................................................................................................3
20.6
GENERAL ELIGIBILITY .................................................................................................................................................................................................3
20.7
JUNIOR ELIGIBILITY.....................................................................................................................................................................................................3
20.8
GENERAL RULES .........................................................................................................................................................................................................4
20.9
PROTECTIVE CLOTHING AND HELMETS ..................................................................................................................................................................4
20.10 MACHINE AND RIDER IDENTIFICATION ....................................................................................................................................................................6
20.11 RACE MEETING PROTOCOLS ....................................................................................................................................................................................7
20.12 AUSTRALIAN SENIOR AND JUNIOR DIRT TRACK CHAMPIONSHIPS FORMAT ..................................................................................................10
SECTION 20D: TECHNICAL REGULATIONS ...........................................................................................................................................................................................10
20.13 SOUND EMISSIONS ...................................................................................................................................................................................................10
20.14 FUEL ............................................................................................................................................................................................................................11
20.15 ENGINES .....................................................................................................................................................................................................................12
20.16 FRAMES AND PARTS.................................................................................................................................................................................................12
20.17 JUNIOR COMPETITION ..............................................................................................................................................................................................14
Application of Chapter
The Rules set out in this chapter are for the discipline of Dirt Track.
Everything that is not authorised and prescribed in this chapter is strictly prohibited.
SECTION 20A: AUSTRALIAN CHAMPIONSHIPS
20.0.0.1
The Australian Senior Dirt Track Championship shall where possible be conducted on the June long weekend.
20.0.0.2
The Australian Junior Dirt Track Championship shall where possible be conducted in the July school holidays.
20.0.0.3
Both the Australian Senior and Junior Dirt Track Championships will be conducted as single meetings at venues selected by the Dirt Track and
Track Commission.
20.0.0.4
Venues for Australian Senior and Junior Dirt Track Championship will be closed to competitors for a minimum of seven days prior to the event.
CATEGORIES FOR SENIOR AUSTRALIAN DIRT CHAMPIONSHIPS
20.1
CLASSES
**under 19
**Pro 250
Pro 450
250 Slider
**Pro Open
500cc Slider
Pro Open
Women
Sidecar
ATV Pro
ATV Open
ATV Women
(Open)
20.1.0.1
20.2
CLASSES
CAPACITIES
150 2-stroke/250 4-stroke
100cc to 150cc 2-stroke & 200cc to 250cc 4-stroke
250cc 2-stroke & 450cc 4-stroke
150cc 2-stroke & 250cc 4-stroke
Unlimited (MX & Slider)
Up to 500cc Slider
Unlimited
Up to 1100cc
Up to 350cc 2-stroke & 450cc 4-stroke
Up to 550cc 2-stroke & 700cc 4-stroke
Up to 550cc 2-stroke & 700cc 4-stroke
Where there are insufficient entries for the 250cc Slider class, these machines may be combined with the events marked with asterisks in the table
above. Machines must have front and rear brakes.
CATEGORIES FOR JUNIOR AUSTRALIAN DIRT TRACK CHAMPIONSHIPS
50cc Auto Division 2
65cc
85cc 2-stroke & 150cc 4-stroke,
Standard Wheel
**85cc 2-stroke & 150cc 4-stroke,
Big Wheel
85cc 2-stroke & 150cc 4-stroke,
Standard & Big Wheel, Girls
AGE GROUPS
(YEARS)
7 to under 9
7 to under 9
9 to under 13
9 to under 11
11 to under 13
13 to under 16
11 to under 13
13 to under 16
11 to under 16
2014 MANUAL OF MOTORCYCLE SPORT
**85cc 2-stroke & 150cc 4-stroke,
Slider Only
85cc 4-stroke Modified
**100cc 2-stroke to 150cc 2-stroke
**100cc to 150cc 2-stroke & 200cc
to 250cc 4-stroke
100cc to 150cc 2-stroke & 200cc
to 250cc 4-stroke, Girls
**100cc to 150cc 2-stroke & 200cc
to 250cc 4-stroke, Slider Only
200cc to 250cc 4-stroke
20.2.0.1
20.3
20.3.1
20.3.1.1
20.3.2
20.3.2.1
20.3.2.2
20.3.3
20.3.3.1
20.3.3.2
20.3.3.3
20.3.3.4
20. DIRT TRACK
13 to under 16
7 to under 10
10 to under 14
13 to under 16
13 to under 16
13 to under 16
13 to under 16
13 to under 16
Where there are insufficient entries for a slider class, these classes may be combined with classes marked with asterisks in table above provided
all machines are fitted with front and rear brakes (applicable only to riders 13 to under 16 years and at the discretion of the relevant controlling
body).
CHAMPIONSHIP MEDALLIONS AND TROPHIES
Individual Competitions
MA medallions will be presented to the 1st, 2nd and 3rd placed riders in each championship solo class and 1st, 2nd and 3rd placed rider and
passenger in the championship sidecar class at all Australian championship meetings.
All Competitions
At least the first three place getters in any Australian Championship event must be awarded a sash or similar permanent memento of the
achievement by the Promoter, irrespective of MA awards.
Medallions and points will be awarded in all other Australian Championships where there are:
a)
10 or more starters for solo classes which actually participate in practice, qualifying or races,
b)
6 or more starters for sidecar classes which actually participate in practice, qualifying or races,
c)
6 or more starters for all female classes which actually participate in practice, qualifying or races.
Duke of Edinburgh Trophies
The Duke of Edinburgh Trophies will be inscribed each year with the names of the winners of the highest capacity solo and sidecar Australian
Championship for the following Australian Dirt Track Championships: 250cc 2-stroke & 450cc 4-stroke Pro Open 450 Solo and Up to 1100cc Dirt
Track Sidecar.
The winners of the Duke of Edinburgh Trophy will be entitled to have a photograph taken of them with the trophy.
The cost of the photograph will be subject to price approval by the State Controlling Body and recoverable from MA.
The trophies will be held by MA.
SECTION 20B: COMPETITION CLASSES
SENIOR COMPETITION CLASSES
20.4
20.4.0.1
The capacity classes for senior machines are:
CLASSES
**Under 19
**Pro 250
Pro 450
250 Slider
**Pro Open
500cc Slider
Pro Open
Women
Sidecar
ATV Pro
ATV Open
ATV Women
(Open)
20.4.0.2
20.4.0.3
20.5
20.5.0.1
CLASSES
CAPACITIES
150 2-stroke/250 4-stroke
100cc to 150cc 2-stroke & 200cc to 250cc 4-stroke
250cc 2-stroke & 450cc 4-stroke
150cc 2-stroke & 250cc 4-stroke
Unlimited (MX & Slider)
Up to 500cc Slider
Unlimited
Up to 1100cc
Up to 350cc 2-stroke & 450cc 4-stroke
Up to 550cc 2-stroke & 700cc 4-stroke
Up to 550cc 2-stroke & 700cc 4-stroke
Where there are insufficient entries for the 250cc Slider class, these machines may be combined with events marked with asterisks in the above
table. Machines must have front and rear brakes.
Riders are eligible to enter one class above capacity of the machine entered for senior riders only.
JUNIOR COMPETITION CLASSES
The capacity classes for junior machines are:
50cc Demo Division 1
50cc Auto Division 2
65cc
85cc 2-stroke & 150cc 4-stroke,
Standard Wheel
AGE GROUPS
(YEARS)
4 to under 9
7 to under 9
7 to under 9
9 to under 13
9 to under 11
11 to under 13
13 to under 16
2014 MANUAL OF MOTORCYCLE SPORT
85cc 2-stroke & 150cc 4-stroke,
Big Wheel
85cc 2-stroke & 150cc 4-stroke,
Standard & Big Wheel, Girls
**85cc 2-stroke & 150cc 4stroke, Slider Only
85cc 4-stroke Modified
**100cc 2-stroke to 150cc 2stroke
**100cc to 150cc 2-stroke &
200cc to 250cc 4-stroke
100cc to 150cc 2-stroke &
200cc to 250cc 4-stroke, Girls
**100cc to 150cc 2-stroke &
200cc to 250cc 4-stroke, Slider
Only
200cc to 250cc 4-stroke
20.5.0.2
20. DIRT TRACK
11 to under 13
13 to under 16
11 to under 16
13 to under 16
7 to under 10
10 to under 14
13 to under 16
13 to under 16
13 to under 16
13 to under 16
13 to under 16
Where there are insufficient entries for the slider classes, these machines may be combined with events marked with asterisks in the table above.
All machines must have front and rear brakes (applicable only to riders 13 to under 16 years and at the discretion of the relevant controlling body).
SECTION 20C: COMPETITION RULES
20.6
GENERAL ELIGIBILITY
20.6.0.1
No person may participate in any competition unless and until that person’s clothing and machine have been examined and approved by the
scrutineer for that competition.
20.6.0.2
At scrutineering, competitors must produce documents or other evidence as required to verify engine and frame identity.
20.6.0.3
The onus of proving that a competitor, and the competitor’s machine and clothing, are eligible to compete, is on the person seeking to prove it.
20.6.0.4
Where any Rule prohibits the modification of any machine or class of machines, that machine or that class will be deemed to have been modified if
any part or parts thereof have been altered from the machine or class as manufactured by the machine manufacturer.
20.6.0.5
In the interpretation of any Rule relating to the design requirements for any machine or class of machines, reference may be made to relevant
diagrams appearing in these Rules.
JUNIOR ELIGIBILITY
20.7
20.7.1
Junior Competitions
No person who is under the age of 16 years may compete in other than a junior competition in the discipline of Dirt Track
20.7.1.1
20.7.1.2
20.7.1.3
20.7.1.4
In Junior competition,
a)
A rider’s age on 1st January will determine their age for competition purposes for that year,
b)
A rider may move to the next higher age class when they become eligible by reason of celebrating a birthday, but once the rider moves to
that higher age class, they may not move back to the lower age class,
c)
Any points earned by the rider in the lower age class cannot be transferred when the rider moves to the higher age class,
d)
This General Competition Rule applies to all riders up to and including the age of 16 years.
No person who is unable to lift his or her machine unaided from the horizontal to the vertical may compete in any Junior competition.
Subject to General Competition Rule 20.7.1.1a) a Junior who is under the age of 9 years may compete on a 50cc automatic machine despite
being unable to lift the machine unaided from the horizontal to vertical.
a)
Junior competitors in the age groups listed may compete in the corresponding classes.
b)
No applicant will be issued with their first competition licence if they are under the age of 7 years,
c)
Unless otherwise permitted in writing by the relevant controlling body, for any event there must be no greater age variation between
competitors than 4 years,
d)
No participant in the 50cc automatic class may compete in any other class other than at Club level competitions,
e)
In the 4 years to under 9 years 50cc Demo non-competitive class, all riders are entitled to receive a prize or award of the same size/value,
f)
Subject to the following two General Competition Rules, a relevant controlling body may permit age group racing, graded racing, or a
combination of both,
g)
Age group racing:
i)
Subject to sub-rule ii), only competitors in the same age groups may compete against each other,
ii)
Competitors from different age groups in the following classes may compete with each other if there are insufficient entries for each
class:
•
85cc 2-stroke big wheels and 100cc–150cc 4-stroke single cylinder,
•
100cc–150cc single cylinder & 250cc 4-stroke,
•
Sidecars,
h)
A relevant controlling body may grade Junior competitors according to their respective skills,
i)
Demo class is a non-competitive class.
4-stroke non-motocross type machines 80cc to 160cc (excluding 80cc 4-stroke Modified for Dirt Track and Track) are approved for competition
under the following conditions:
a)
Use limited to natural terrain Motocross (no man-made jumps), Enduro and Dirt Track competitions only,
b)
Exhaust systems may be modified or changed,
c)
External gearing and carburettor jetting may also be altered,
2014 MANUAL OF MOTORCYCLE SPORT
20.7.1.5
20.7.2
20.7.3
20.7.3.1
20. DIRT TRACK
d)
No other modifications are allowed.
4-stroke 150cc motocross-type machines may compete against 85cc 2-stroke motocross-type machines in Junior competition.
Junior Endorsements
Junior Endorsements will be issued for the following:
• Off Road 50cc
• Off Road 65cc 2 Stroke/125cc 4 Stroke
• Off Road 85cc 2 Stroke/150cc 4 Stroke
• Off Road 200cc 2 Stroke
• Off Road 250cc 4 Stroke
• Sidecar Rider & Passenger 85cc 2 Stroke /150 4 Stroke
• Sidecar Rider & Passenger 200cc 2 Stroke & 250cc 4 Stroke
Junior Trail Bikes
The following machines are eligible for club and inter-club competitions:
a)
7 to under 13 65cc class
MANUFACTURER
Honda
MODEL(s)
CRF70, XR70, CRF80,
XR80
CRF110F
KLX110, KLX110C,
KLX110L
JR80, DR-Z70
PW80, TT-R90 TT-R110
Kawasaki
Suzuki
Yamaha
and similar machines approved by Board.
b)
9 to under 16 85cc class:
MANUFACTURER
Honda
Kawasaki
Yamaha
Suzuki
20.8
20.8.1
20.8.1.1
MODEL(s)
XR100, CRF100
KE100, KLX140
TT-R125
DR-Z125/L
and similar machines approved by Board.
GENERAL RULES
Homologation
For any competition, MA may require that any machine, or any part of a machine, including tyres, be homologated. For homologation details see
MA website.
20.8.2
Helmet Cameras
20.8.2.1
Helmet cameras may be fitted providing the mounting to the helmet will allow the camera to detach if impacted upon and the attachment method
must not impair the integrity or operation of the helmet.
20.8.3
Fees
ACTIVITY
FEE (inc GST)
Replacement licence
$25
Protest lodgement
$70
Appeal to State
Controlling Body
lodgement
$500
Appeal to MA lodgement
$1000
Fuel homologation fee
First year
$2500
Fuel homologation fee
Subsequent years
$2000
All other fees
20.9
20.9.0.1
20.9.1
20.9.1.1
Apply at MA office
PROTECTIVE CLOTHING AND HELMETS
No competitor may practice, start or compete in any Dirt Track competition unless wearing the following protective equipment and clothing:
Helmet
An approved and correctly fitting helmet (see Appendix B: Helmet Fitting Guide) which must:
20. DIRT TRACK
2014 MANUAL OF MOTORCYCLE SPORT
20.9.2
20.9.2.1
a)
Carry the Standards Association of Australia “AS 1698” label; or
b)
Be approved under FIM Technical Rules.
Approval labels for helmets
Helmets must carry one of the following approval labels:
a) Europe
ECE 22 - 05 ‘P’,‘NP’ or ‘J’ [Label affixed inside the helmet]
b) USA
DOT Federal Standard No 218 / SNELL M2005, M2010
[Label affixed inside the helmet]
c) Japan
JIS T 8133: 2007 [Label affixed inside the helmet]
d) Australia
Standards Association of Australia AS1698
20.9.3
International Helmet Standards
Refer also www.fim.ch
20.9.3.1
ECE 22 - 05 ‘P’, ‘NP’ or ‘J’ [EUROPE]
The ECE mark consists of a circle surrounding the letter E followed by the distinguishing number of the country which has granted approval, as
follows:
E1
E6
E11
E16
E21
E26
E31
E36
E45
20.9.3.2
20.9.4
20.9.4.1
20.9.4.2
20.9.4.3
20.9.4.4
20.9.4.5
20.9.4.6
20.9.5
20.9.5.1
Germany
Belgium
United Kingdom
Norway
Portugal
Slovenia
Bosnia & Herzegovinia
not assigned
Australia
E2
E7
E12
E17
E22
E27
E32
E37
E46
France
Hungary
Austria
Finland
Russian Federation
Slovakia
Latvia
Turkey
Ukraine
E3
E8
E13
E18
E23
E28
E33
E40
E47
Italy
Czech Republic
Luxembourg
Denmark
Greece
Bielo Russia
not assigned
Macedonia
South Africa
E4
E9
E14
E19
E24
E29
E34
E43
E48
Netherlands
Spain
Switzerland
Romania
Ireland
Estonia
Bulgaria
Japan
New Zealand
E5
E10
E15
E20
E25
E30
E35
E44
E49
Sweden
Yugoslavia
not assigned
Poland
Croatia
not assigned
not assigned
not assigned
not assigned
Below the letter E the approval number should always begin with 05. Below the approval number is the serial production number [Label is on
retention system or comfort interior]
Samples of [AUSTRALIA] AS 1698 [Label affixed to the helmet]:
Clothing
Rider responsibility: It is the responsibility of the rider to select a helmet and apparel that will provide appropriate protection. Although MA
approves materials, MA does not endorse or guarantee specific products or manufacturers. Riders must rely on their own judgment in the
selection of helmets and for protection and durability.
Minimum requirements are as follows:
Trousers of leather or synthetic material of similar durability.
Trousers of other than leather must be non-combustible and be fitted with a lining,
jersey which must be:
a)
Made of close knit fabric of natural or synthetic fibre, and
b)
Must be a snug fit and provide protection against abrasion to the body and arms.
A commercially manufactured back protector, which continuously covers the back area between the collar line and the base of the spine if wearing
leathers, or a full Kevlar suit.
In the case of competitor’s wearing apparel as described in 20.9.4.1 and 20.9.4.2 and 20.9.4.3:
a)
Commercially manufactured armour which protects the elbows, shoulders and the back or a leather or similar jacket with in-built back
protection or a jacket and commercially manufactured back protector,
b)
Protection of the back must be continuous and cover all of the back area between the collar and the base of the spine,
c)
Where the armour is not constructed as a one-piece suit type, knee and elbow guards must be used in Dirt Track.
Footwear
Boots which must be:
a)
Of recognised Dirt Track type,
b)
Constructed of leather, plastic or other similarly durable material, and
c)
Of a length that must at least cover ¾ of the length of the lower leg, with the rider in a racing position on the machine.
20. DIRT TRACK
2014 MANUAL OF MOTORCYCLE SPORT
20.9.6
20.9.6.1
20.9.6.2
20.9.7
20.9.7.1
20.9.8
20.9.8.1
20.9.8.2
20.9.9
20.9.9.1
20.10
20.10.1
20.10.1.1
20.10.1.2
Gloves
Gloves of leather or other material of similar or greater durability.
Fingerless gloves may be worn by passengers on sidecars.
Goggles and Visors
Eye protection, including spectacles, protective goggles, helmet visors and/or ‘tear-offs’ must be worn provided:
a)
Eye protectors and spectacles are made of non-shattering material,
b)
Eye protectors which cause visual disturbance are not to be used,
c)
Metal or Perspex face shields are not used,
d)
Eye shades or peaks are of a flexible material.
Hair and Jewellery
Hair longer than shoulder length must be confined in the helmet or jacket.
Body jewellery is to be removed or securely covered with tape prior to competition.
Footwear in pits
Closed footwear must be worn in the pit area at all times.
MACHINE AND RIDER IDENTIFICATION
Number Plates
For all competitions three number plates must be fitted: one at the front and one on each side.
Number plates must:
a)
Where they are not an integral part of the machine or streamlining and are under 1.6mm in thickness, have rolled or wired edges,
b)
In the case of rectangular plates, have the corners formed to a 38mm radius,
c)
In the case of bolt on number plates, be made from a rigid material with minimum dimensions of 235mm height and 285mm width; and
d)
In the case of sidecars, be positioned so that they are visible from the front and each side of the sidecar.
20.10.1.3 Front number plates must have figures which are clearly visible at a distance of 20 metres and a solid 10mm wide border.
20.10.1.4 Side number plates must:
a)
Be fitted above a horizontal line drawn through the rear axle,
b)
Be fitted so that the front edge of the plate is behind a vertical line drawn at 200mm to the rear of the rider’s footrest,
20.10.1.5 Number backgrounds on side number plates may be an integral part of the rear seat section or fairing.
20.10.1.6 Advertising must be at least 25mm clear of the background of a number plate unless the advertising is an integral part of the back plate cover.
20.10.2
Number Plates: Juniors
20.10.2.1 Number plates for Juniors must be as follows:
a)
A minimum plate size of 225mm width and 200mm height,
b)
Figures with minimum sizes of 100mm height and 20mm width of stroke.
20.10.2.2 For 50cc automatic:
a)
A minimum plate size of 200mm wide and 150mm high,
b)
The figures on the plates must be 100mm high and 20mm wide,
c)
The front plate must be fitted so that it does not extend above the height of the handlebars or grips.
20.10.3
Number Plate Colours
20.10.3.1 Colours must be as follows:
BACKGROUND
CAPACITY or CLASS
FIGURE COLOUR
COLOUR
Up to 125cc
Black
White
Up to 250cc 2-stroke, up to 250cc 4-stroke, MX/SX only
Black
White
126cc to 250cc
Dark Green
White
501cc to 750cc
White
Black
Long Track 500cc
White
Black
Dirt Track 251 to 450cc 4-stroke
Mid Blue
White
Dirt Track over 450cc 4-stroke
White
Black
Up to 500cc Sidecar
Canary Yellow
Black
Over 500cc Sidecar
White
Black
BACKGROUND
COLOUR
FIGURE COLOUR
20.10.4
Colours for Junior age group racing:
AGE GROUP
under 9 years
Mid Blue
White
20. DIRT TRACK
2014 MANUAL OF MOTORCYCLE SPORT
9 to under 12 years
Canary Yellow
Black
12 to under 14 years
Mail Box Red
White
14 to under 16 years
Black
Yellow
20.10.4.1
20.10.4.2
20.10.5
20.10.5.1
Additional colour combinations may be used, at the discretion of the relevant controlling body.
Advertising is permitted on all machines, but must be at least 25mm clear of the number plate background and the rider’s name by either a gap or
a contrasting colour strip.
Back Numbers: Seniors and Juniors
No senior or junior may compete in any competition unless wearing the machine identification number on their back in contrasting colours and with
a minimum size of 125mm height and 20mm width of stroke.
RACE MEETING PROTOCOLS
20.11
20.11.1
Flags and signals
20.11.1.1 The minimum dimensions of all flags must be 500mm x 500mm.
20.11.1.2 Track flags and signals have the following meanings:
FLAG SIGNAL
MEANING AND REQUIREMENT OF COMPETITOR
National flag dropped or raised
Start
Red flag displayed
Race or practice stopped prematurely. Competitors must slow
down, must not overtake and must slowly proceed to the parc
fermé, pits, or other area indicated to them by officials. The red
flag will also be used to signal the end of a demonstration
Black flag held stationary and
black board with rider’s number
Competitor with number indicated on black board must stop at the
pits on the next lap
Yellow flag held stationary
Danger, ride slowly, overtaking is forbidden
Yellow flag waved
Immediate danger, slow down, prepare to stop, overtaking
forbidden
No Jump light
Danger, overtaking forbidden, jumping forbidden
Yellow flag with red stripes held
stationary
Deterioration of adhesion of the track
White flag waved
Slow moving intervention vehicle on track
Blue flag held stationary
Overtaking signal warning that competitor is soon to be overtaken
Blue flag waved
Overtaking signal warning that rider is about to be overtaken
Green flag held stationary
Course clear
Last lap board
The last lap of the race is about to commence
Purple Flag
Protest flag for all junior competitors
Black and white chequered flag
waved
Finish of Race, Practice session or Qualifying
20.11.1.3
SIGNAL
Flag signals may be supplemented by light signals as follows:
SUPPLEMENT TO/
EQUIVALENT TO
One or two flashing
yellow lights
Yellow flag
Green light
Green flag
Red light
Red flag
2014 MANUAL OF MOTORCYCLE SPORT
20.11.1.4
20.11.2
20.11.3
20.11.3.1
20.11.3.2
20.11.3.3
20.11.4
20.11.4.1
20.11.5
20.11.5.1
20.11.5.2
20.11.6
20.11.6.1
20.11.7
20.11.8
20.11.8.1
20.11.8.2
20.11.8.3
20.11.8.4
20.11.8.5
20.11.8.6
20.11.9
20.11.9.1
20. DIRT TRACK
The National flag signifying the start of an event may be replaced by:
a)
A light signal,
b)
A starting tape,
c)
A rubber band, or
d)
A dropping gate
Measurement of Engines
Measurement at Meetings
A Steward of a meeting may direct the measurement of the capacity of the engine of any machine, to be carried out at the conclusion of the
meeting. Until the measurement is completed the machine must remain under the control of the relevant controlling body.
If an engine is measured at the request of a rider or entrant, the rider or entrant is liable for the cost of the measurement.
If an engine is measured for the purposes of a protest, the protesting party must submit a $500 bond. This bond will be refunded in full if the
measured engine is found to be illegal. If the measured engine is found to be legal any reasonable costs in reassembly up to a maximum of $500
will be deducted and the remaining bond returned to the protesting party.
Measurement: Australian and State Championship Events
For all Australian and State championship events:
a)
All machines must have provision for the placement of sealing wire,
b)
An entrant may request that the entrant’s machine be measured and sealed before the event. As soon as practicable after receiving the
request the measurer for the event must measure and seal the machine. Any machine examined under this sub-rule may, on application by
the entrant, at the discretion of the measurer, be exempted from further examination at the event,
c)
The first, second, third and fourth placed machines must be impounded for a period of 30 minutes immediately following the event, pending
any protest, and the event result will be provisional,
d)
At the conclusion of that period, if no protest is received, the result will be final,
e)
If the machines are to be ridden in another event within that period, they must be sealed before being returned to the competitor for that
event,
f)
If no protest is received within that period, the seals may be removed,
g)
Any machine sealed as the result of a protest may only be measured by a measurer. All measurer’s reports, together with the seals, must
be delivered to the relevant controlling body within 21 days after the event,
h)
No prize monies may be paid until measurer’s reports and seals are received or the expiration of 21 days, whichever occurs first.
Entries
No machine may be entered more than once in a class.
Any machine that is entered in more than one class must display the allocated riding number for that class on all three number plates when being
used in each class.
Practice and Qualifying
Practice and qualifying shall be as prescribed in supplementary regulations.
Starts and finishes
Starts
The method of starting will be prescribed in supplementary regulations.
Starting positions will be prescribed in supplementary regulations.
Unless otherwise determined in the supplementary regulations all competitors must be called to the start line at least two minutes before each
start.
All competitors must, in relation to the start of any event, comply with directions issued by, and under the authority of, the Starter. For such
purposes the Starter, on the instructions of a key official, may:
a)
Delay a start,
b)
Direct a restart,
c)
Direct a competitor to start from:
i)
The back of the starting grid,
ii)
The pit lane,
iii) The rear of the field, or
iv) Such other position as shall be required for the safe, fair and orderly start of the event.
d)
Exclude a competitor who is late for the start.
The method of starting will be as prescribed by the supplementary regulations.
The start of an event occurs:
a) When the order to start is given, or
b) For flying starts, when the starting line is crossed.
Finishes
For events where speed is the determinant:
a)
A chequered flag must be displayed to each competitor as each crosses the line, with the flag being displayed:
i)
To the first to complete the event, who will, subject to the results of any protests, be the winner, and
ii)
Thereafter to each competitor who:
• Has completed not less than 75% of the event distance, and
• Is still competing in the event on the lap in which the chequered flag is displayed to the winner, with the sequence of completion
of the event being the determinant of placings.
b)
The finish of the event occurs when the flag is displayed to the last competitor under GCR 20.11.9.1 a),
c)
The finish occurs for each machine when the foremost part of the machine crosses the line,
d)
Where there are two competitors required to be on one machine together, both must finish the event on the machine. On a solo machine
the competitor must finish the event on the machine,
e)
In case of a dead heat between competitors for a place:
2014 MANUAL OF MOTORCYCLE SPORT
20.11.10
20.11.10.1
20.11.11
20.11.11.1
20.11.11.2
20.11.12
20.11.12.1
20.11.12.2
20.11.12.3
20.11.12.4
20.11.12.5
20.11.13
20.11.13.1
PLACE
i)
The places and the awards for those places will be combined,
ii)
The participants in the dead heat will share the places and awards equally,
iii) The remaining places will be relegated by the number of participants in the dead heat.
Juniors: Starts and Finishes
In addition to the general start requirements for all competitors, juniors must comply as follows:
a)
Competitors may use up to two starting blocks (one per side) up to a maximum of 100mm high and must be able to start in the event
unaided while sitting on the machine, This does not apply to Road Racing.
b)
When assembled for the start of an event, and during the event, no competitor may receive outside assistance other than at the direction of
the Steward, the Clerk of Course or the Starter,
c)
Pit board signals will not be used in junior competition with the exception of junior road racing. Riders/pit crew who fail to obey this
instruction are liable to exclusion for the duration of the competition. Refer GCR 7.1.7
d)
When the number of competitors exceeds one full grid:
i)
Elimination heats and semi - finals must be held,
ii)
The relevant controlling body may direct that events be decided by a final or finals, consisting of a number of rounds.
Stopping Events
Where an incident causes an event to be stopped, the Steward or Clerk of Course may declare the event complete if at least 75% of the event
distance or time, whichever is the less, has been run.
The results so declared will be based on the placings at the finish line of the last full lap completed before the incident but will exclude those
competitors who:
a)
Caused the incident, or
b)
Having been involved in the incident and could not continue in the event.
Stopping and re-running events
The Steward or Clerk of Course who has excluded a competitor for unfair conduct and considers that such conduct has:
a)
Given an advantage to the team of which the offender is a member, or
b)
In the case of a non-team event, jeopardised the fair chances of one or more of the other competitors in the event,
may declare the event void and order a re-run.
If the event continues, any competitor unable to cross the finish line as a result of such conduct on the part of the excluded competitor may be
deemed to have finished the race in the place:
a)
Held immediately before such conduct, or
b)
Having regard to any advancement in placing following the exclusion, in some other place.
A Steward or Clerk of Course may stop an event and order it to be re-run if it would be dangerous for it to continue.
In any re-run:
a)
Any competitor who:
i)
Fell in the stopped event as a result of having been fouled,
ii)
Intentionally laid down his or her machine in the interests of safety, or
iii) Left the course in the interests of safety, may participate.
b)
Any competitor who:
i)
Caused or contributed to the event being stopped,
ii)
Failed to start in,
iii) Retired from,
iv) Was excluded from,
v) Had been lapped during the course of the stopped event,
may not participate.
If the race is interrupted after the chequered flag, the following procedure will apply:
a)
For all the riders to whom the chequered flag was shown before the interruption, a partial classification will be established at the end of the
last lap of the race.
b)
For all the riders to whom the chequered flag was not shown before the interruption, a partial classification will be established at the end of
the penultimate lap of the race.
c)
The complete classification will be established by combining both partial classifications as per the lap/time procedure.
Scoring
Dirt Track points scoring:
POINTS
PLACE
POINTS
1
25
11
10
2
22
12
9
3
20
13
8
4
18
14
7
5
16
15
6
6
15
16
5
7
14
17
4
8
13
18
3
9
12
19
2
10
11
20
1
20.11.13.2
20.11.13.3
20. DIRT TRACK
An alternative points scoring system may be approved for an MA series event.
If a tie on points occurs for any position in an event which is conducted over more than one leg, the tying competitor who has the higher finishing
position in the final leg of the event will be awarded the position.
2014 MANUAL OF MOTORCYCLE SPORT
20.11.13.4
20.11.14
20.11.14.1
20.11.15
20.11.15.1
20.12
20.12.1
20.12.1.1
20.12.1.2
20.12.1.3
20.12.1.4
20.12.1.5
20.12.2
20.12.2.1
20.12.2.2
20.12.3
20.12.3.1
20.12.3.2
20.12.3.3
20.12.3.4
20.12.4
20.12.4.1
20.12.4.2
20. DIRT TRACK
If a tie on points occurs for any position in a series, the tying competitor who has the greatest number of higher placings in the series will be
awarded the position.
Change of Machine during a Competition
During any competition, other than an attempt at a record, no machine may be exchanged for another unless permitted under these Rules or any
Supplementary Regulations.
Radio communication
Radio communication with riders is not allowed, and will be classed as outside assistance.
AUSTRALIAN SENIOR AND JUNIOR DIRT TRACK CHAMPIONSHIPS FORMAT
Solo Format where there are more than 12 entries per class
The championship comprises:
a)
Three qualifying heats of three laps,
b)
One repechage of four laps,
c)
One final of four laps.
Heats and Final:
a)
The number of heat positions must not exceed 12.
b)
The right to compete in the final will be filled by:
i)
The 10 competitors accumulating the highest number of points during the course of heats,
ii)
The first two placings of the repechage.
Competitors who finish in 11th to 22nd inclusive during the course of the heats will contest the repechage.
The finishing order of each competitor in the final will determine Championship placings.
Grid positions will be pre-drawn and listed in the program for heats and/or rounds. Riders’ choice for grid positions in the finals will apply. Top
points scorer has first choice and so on, as per point score result. If electronic timing is used, qualifying time will determine the choice of grid
position for the first heat only, thereafter the grid positions are determined by the finishing position in the previous race.
Solo Format where there are 12 or less entries per class
The championship comprises five races of four laps.
Points accumulated by each competitor in the five races will determine the Championship placings.
Sidecar Format where there are more than six entries per class
The Championship comprises:
a)
Three qualifying heats of three laps,
b)
One repechage of four laps,
c)
One final of four laps.
Heats and Final:
a)
The number of heat positions must not exceed six.
b)
The right to compete in the final will be filled by:
i)
The 5 competitors accumulating the highest number of points during the course of heats;
ii)
The winner of the repechage.
Competitors who finish in 6th to 11th places inclusive during the course of the heats will contest the repechage.
The finishing order of each competitor in the final will determine Championship placings.
Sidecar Format where there are six entries or less per class
The Championship comprises five races of four laps.
Points accumulated by each competitor in the five races will determine Championship placings.
SECTION 20D: TECHNICAL REGULATIONS
SOUND EMISSIONS
20.13
20.13.0.1 Sound testing must be carried out at all permitted events however it is not mandatory to test all machines
20.13.1
Specifications
20.13.1.1 Sound emissions are set out in the tables below:
30 meters (from side of track) ride by test
DISCIPLINE
LIMIT dB(A)
Dirt Track & Track
(including Quads)
95
Record Attempts
No limit
20.13.1.2
20.13.2
20.13.2.1
20.13.2.2
20.13.3
20.13.3.1
20.13.3.2
Where government regulations or planning orders exist in relation to lower sound emissions or where a venue has lower sound emission
requirements as part of the hire contract, the sound emission required will prevail over GCR 20.13.1.1.
Sound control during competition
The Sound Control Officer (SCO) must arrive in sufficient time for discussions with the Clerk of the Course and other Technical Officials in order
that a suitable test site and testing policy can be agreed.
Machines can be tested before, or after competing in an event, chosen by ballot, or as required by a Steward, Clerk of Course or SCO.
Use of sound level meters
Sound testing apparatus must:
a)
Comply with international standard IEC 651, Type 1 or Type 2.
b)
Include a compatible calibrator, which must be used immediately before testing begins and always just prior to a re-test if a disciplinary
sanction may be imposed.
Sound testing apparatus must be set to:
a)
‘Fast response’
2014 MANUAL OF MOTORCYCLE SPORT
20.13.3.3
20.13.3.4
20.13.4
20.13.4.1
20.13.4.2
20.13.4.3
20.14
20.14.1
20.14.1.1
20.14.1.2
20.14.1.3
20.14.1.4
20.14.2
20.14.2.1
20.14.2.2
20.14.3
20.14.3.1
20.14.3.2
20.14.3.3
20.14.3.4
20.14.4
20.14.4.1
20.14.4.2
20.14.4.3
20.14.5
20.14.5.1
20. DIRT TRACK
b)
‘A’ weighted,
c)
Select range High 80~130 dB,
d)
Activate the function MAX MIN - set on MAX,
‘30 Meter ride by’ test
a)
The sound levels will be measured with the sound meter/microphone fixed on a tripod, in the horizontal position, 30 meters from the edge
of the track at a high speed point.
Tests shall not take place in the rain
Machine testing
If a machine fails, it can be represented for re-testing.
No person may compete in any event on a machine whose noise emissions exceed the prescribed levels.
A machine which does not comply with the sound limits can be presented several times.
FUEL
Fuel Warning
Fuels and lubricants are highly specialised substances and participants must be aware they may contain substances that are extremely dangerous
to human health if misused, inhaled or allowed to contact skin.
Some of the components of fuel and lubricants are suspected of having the potential to cause cancer in rare circumstances.
The use of petrol as a general cleaning and washing agent is a common misuse of a potentially dangerous substance.
Fuels should be used and stored with extreme care and in accordance with the manufacturer’s instructions.
Fuel Testing
For any event, meeting or series, the Relevant Controlling Body may direct that no fuels other than fuels of prescribed specifications and from a
prescribed source may be used.
a)
Tests to ensure that only prescribed fuels are used in an event, meeting or series may be administered at any time and place during the
course of the same,
b)
The Clerk of Course, Race Director or Chief Scrutineer may direct the administration of fuel tests.
Fuel tests must comply with the following procedures:
a)
All containers for holding samples must be clean and constructed of robust non-reactive impermeable material, must be sealable, and must
have provision for identification,
b)
Equipment used for the extraction of fuel from machines must be clean and constructed of fuel non-reactive material,
c)
All samples must be divided into two lots (Sample A and Sample B) of not less than 5ml each, which must be placed in separate
containers,
d)
Once samples are placed in containers, the containers must immediately be sealed and identified by reference to the machine from which
the sample was taken. This information must be entered on a fuel sample certificate which must certify the date, place and time of taking
the sample, the identity of the machine from which the sample was taken and the identity of the rider,
e)
Both samples must remain in the control of the official who administered the test.
f)
The rider or the representative must sign the fuel sample certificate acknowledging samples have been taken and are sealed,
g)
All samples held by the official must be delivered as soon as practicable after the competition to the Relevant Controlling Body which must
deliver the Sample A as soon as practicable to a laboratory approved by MA where they must be tested for content and quality in
accordance with standard scientific procedures,
h)
The relevant controlling body must as soon as practicable after receipt of the results notify the rider or rider’s team representative and MA,
i)
If the rider is dissatisfied with the test result of sample A, they may request sample B be tested at an MA approved laboratory in their
presence.
Refueling
During refueling, each machine must be stationary with the engine stopped.
Refueling will be deemed to have commenced when the fuel tank has been opened and completed when the tank is closed.
Smoking is strictly prohibited in areas where refueling is permitted.
Riders are liable for exclusion from an event for failing to adhere to General Competition Rule 20.14.3.3, and are responsible for the actions of
their mechanics and support team members.
Homologation of Fuel
Unleaded fuel produced by an oil company for sale in the Australian general transport fuel market through retail petrol pumps in at least five states
does not have to be homologated. For the avoidance of doubt this means the fuel must be available for sale on demand from a roadside bowser
outlet at each of at least five separate service stations in each of at least five Australian states or territories.
Organisations seeking homologation of fuel must provide MA with:
a)
Two one-litre sealed containers of the fuel for analysis,
b)
Details of the fuels characteristics,
c)
The distribution network,
d)
The price structure,
e)
A homologation fee of $2,500 in the first year and $2,000 per year thereafter.
Fuels approved under this General Competition Rule will be published at www.ma.org.au.
Fuel: Dirt Track
Fuel for Dirt Track machines must:
a)
Be unleaded, and
b)
Be no more than 100 RON, and
c)
Contain no additives other than those added at the point of manufacture except for:
i)
lubricating oil for 2-stroke engines
ii)
Upper cylinder lubricant for 4-stroke engines.
d)
Be readily available from retail petrol pumps within Australia; or
2014 MANUAL OF MOTORCYCLE SPORT
20.14.5.2
20.14.5.3
20.15
20.15.1
20.15.1.1
20.15.2
20.15.2.1
CLASS
e)
Be a brand of fuel homologated by MA that is compatible with the Fuel Quality Standards Act 2000,
In addition, for senior and classic competition, commercially manufactured pure Methanol with no additives other than lubricating oil may be used.
Environmental protection: An absorbent mat that measures 500x500mm minimum must be placed underneath the engine/gearbox and fuel tank of
any solo or sidecar while parked in the pit, paddock or work area.
ENGINES
Reciprocating Engines
The formula for calculation of capacities and classes
Cubic capacity = (D2 x 3.1416 x C x N)
4
Where: D = Bore in centimetres,
C = stroke in centimetres,
N = Number of cylinders.
Engine Capacity Tolerances
Unless otherwise specified in the following table, the actual engine capacity of a machine competing in a capacity class may not exceed the
prescribed capacity for that class by more than 2%:
PERMITTED
EXCESS
80cc 2-stroke machines
manufactured prior to 1/1/95
20.16
20.16.1
20.16.1.1
20.16.1.2
20.16.1.3
20.16.1.4
20.16.2
20.16.2.1
20.16.3
20.16.3.1
20.16.4
20.16.4.1
20.16.4.2
20.16.5
20.16.5.1
20.16.6
20.16.6.1
20.16.6.2
20.16.6.3
20.16.6.4
20.16.7
20.16.7.1
20.16.8
20.16.8.1
20.16.8.2
20. DIRT TRACK
5%
FRAMES AND PARTS
Streamlining
All streamlining fitted to motorcycles or sidecars must be free of any sharp edges on exposed extremities.
For fibreglass construction, edges must be rounded to their own thickness but need not be wired.
All forward streamlining attached to solo and sidecar machines must have a minimum of three attachment points:
a)
At least one supporting the forward section of the shell, and
b)
One on each side supporting the rear portion of the shell.
Identification plates must have corners and edges smoothed.
Fuel Tanks
Fuel tanks may be constructed from any material that has been approved by the Australian Standards Association as a petrol or fuel container
material.
Exhaust Systems
Exhaust systems must:
a)
Be fitted with silencers,
b)
Terminate at a point not more than 25mm beyond the rear extremity of the rear tyre tread,
c)
Be attached as closely as practicable to the machine and in a manner that does not, in the opinion of the Scrutineer, create a hazard to
other competitors,
d)
Where separate silencers are fitted, have a minimum of two mountings or locking screws on all machines which have a capacity in excess
of 85cc,
e)
Where silencers are re-packable, have safety wired securing bolts.
Centre and Side Stands
Centre and side stands must be removed for all types of competition other than the 50cc classes.
Centre and Side Stands which remain on machines under the previous GCR must be secured in the closed position.
Footrests
Footrests must:
a)
Be well rounded and designed so as to ensure that no dangerous edges are created due to wear.
b)
Not touch the ground at lean unless they are hinged or pivoted and controlled by a return spring.
Handlebars
The ends of the handlebars or twist grip sleeves must be securely plugged so as to present a flush or rounded end.
Handlebar levers must:
a)
Have ball ends with a minimum diameter of:
i)
15mm, for levers longer than 76mm,
ii)
10mm, for levers shorter than 76mm.
b)
Measure no more than 200mm from the fulcrum to the extremity of the ball.
Throttle controls must be self-closing.
A lanyard operated ignition cut-out switch, operating on the primary circuit, must be fitted to all Dirt Track sidecars. For Dirt Track, the lanyard must
have a maximum length of one metre.
Kick Start Levers
Kick start levers, other than transverse, must be folding.
Drive Chain Protection
Primary drives (the drive connecting engine to clutch) must be guarded so as to prevent direct access to the chain or sprockets with the fingers.
The guard must be constructed of:
a)
Metal having a minimum thickness of 1.6mm, which may be mesh or expanded metal provided the openings do not exceed 10mm, or
b)
Fibreglass having a minimum thickness of 3mm.
2014 MANUAL OF MOTORCYCLE SPORT
20.16.8.3
20.16.8.4
20.16.8.5
20.16.8.6
20.16.9
20.16.9.1
20.16.9.2
20.16.10
20.16.10.1
20.16.10.2
20.16.11
20.16.11.1
20.16.11.2
20.16.11.3
20.16.12
20.16.12.1
20.16.12.2
20.16.12.3
20.16.12.4
20.16.12.5
20.16.12.6
20.16.12.7
20.16.12.8
20.16.12.9
20.16.12.10
20.16.12.11
20.16.12.12
20.16.12.13
20.16.12.14
20.16.12.15
20.16.12.16
20.16.12.17
20.16.12.18
20.16.12.19
20.16.12.20
20.16.12.21
20. DIRT TRACK
If a plastic, fibreglass or part open chain guard is used, a steel bolt of not less than 10mm diameter, placed outside the bottom rear quadrant of the
clutch sprocket. This bolt, if damaged, must be replaced.
Projecting sprockets, which are not behind a clutch assembly or directly behind a frame member, must be guarded where the sprocket teeth are
further than 30mm from a frame member or swinging arm.
A counter shaft sprocket which is more than 30mm from the outside of the swing arm pivot, must be covered.
A chain guard made of suitable material must be fitted in a way to prevent trapping between the lower drive chain run and the final drive sprocket
at the rear wheel.
Tyres
Tyres must comply with the following:
a)
Metal studs, spikes, chain, rope or other non-skid attachments may not be used unless permitted by the relevant Supplementary
Regulations.
b)
Treads on tyres must be at least 1mm deep on any part of the tyre that comes in contact with the ground.
c)
The tread depth indicating holes on slick tyres must be clearly visible and at least 0.5mm deep.
d)
Paddle or scoop treaded tyres may not be fitted.
Valve caps must be used for all competitions.
Mudguards
Either a rear mudguard or a seat must be fitted which extends at least 20 degrees to the rear of a vertical line drawn through the rear wheel axle.
Mudguards must be made of a material, which is not liable to cause personal injury if deformed.
Senior Solo
For Dirt Track competition, a machine:
a)
May be constructed as either a slider type or motocross type,
b)
Must have a gearbox with a minimum of two gear ratios,
c)
Must have rear suspension,
d)
Must have a minimum of two working brakes,
e)
Carbon fibre or carbon composite brake discs and/or carriers are not permitted,
f)
Aluminum or Titanium brake discs are not permitted.
Tyres
a)
The rear tyre must be a maximum width of 150mm when measured at a point on the tyre located at 90º to where the tyre contacts the
ground and at a pressure inflated to 14psi (9.6KPa),
b)
Tyre pressure may be adjusted after measurement.
If hand protectors are used, they must be of a shatterproof material.
Senior Sidecar
Wheel track measurement, taken between the longitudinal centres of the rear and sidecar wheels must be between 810mm and 1,100mm.
Ground clearance must be at least 75mm unladen.
The lean of the motorcycle at saddle height must be no more than 50mm.
When multiple tyres on one wheel are used, the maximum collective width of the tyres must not exceed 280mm.
The dimensions of the sidecar baseboard in plain view, taken from a line drawn no further rearwards than the lowest point of the front down tubes
to the forward most point of the sidecar wheel tyre and terminating no further rearwards than a line drawn at right angles to the machine from the
rearmost point of the rear tyre, must be:
a)
At least 760mm long adjacent to the sidecar wheel,
b)
At least 300mm wide, having at least 25mm radius to all corners.
The leading edge of the sidecar floor must be protected by a nose cone or a rail of at least 50mm height.
The drive must be transmitted to the track through the rear wheel of the motorcycle.
One efficient rear wheel brake must be fitted.
Safety chains must be fitted to all machines equipped with girder type front forks.
A passenger must be carried in a suitably constructed sidecar.
There must be no less than four sidecar mounting points.
There must be no more than 50mm between baseboard and motorcycle and baseboard and sidecar wheel. The baseboard must be arranged to
prevent the passenger’s feet being trapped.
Handholds on the sidecar:
a)
Must be finished with a loop of at least 100mm,
b)
Must not project beyond a line taken with the outer edge of the sidecar mudguard or bodywork,
c)
Adjacent to the nose section of the sidecar and less than 200mm from the track surface must be at an angle of at least 45° from the
horizontal,
A suitable passenger handhold must be provided on the off side of the rear wheel.
Stirrup fittings for the passenger’s feet are not permitted.
The rear end of the rear wheel mudguard must terminate not more than 45° above a horizontal line drawn through the rear wheel axle and be
valanced to baseboard level on the inside and to axle level on the outside, with the suspension depressed.
The sidecar mudguard must cover at least 180° of the periphery of the wheel and be valanced to baseboard level on both sides.
All footrests, brake levers, and gear levers on the opposite side of the motorcycle to the sidecar must be folding, or be shielded by a continuous
bar of 12mm minimum diameter.
Any open area between the footrests, the continuous bar and the offside of the motorcycle must be filled in with a suitable material.
Machines competing in any 1100cc sidecar event:
a)
Supercharged and turbocharged engines must not exceed 500cc,
b)
On liquid-cooled engines, an overflow pipe must direct any overflow of coolant away from the rider and passenger.
A lanyard operated ignition cut-out switch, operating on the primary circuit, must be fitted to Dirt Track sidecars. The lanyard can be up to one
metre in length.
2014 MANUAL OF MOTORCYCLE SPORT
20.17
20.17.1
20.17.1.1
JUNIOR COMPETITION
50cc Demo Class Machines
Eligible Machines are:
MANUFACTURER
FMC
Honda
HM
Husqvarna
Kawasaki
Kazuma
KTM
LEM
Suzuki
TM
Yamaha
20.17.1.2
20.17.2
20.17.2.1
LEM
Malagutti
Polini
TM
Metrakit
MODEL(s)
PY50, XRX50EY
CRF50, QR50
Baja Junior
Husky Boy Junior
KDX50
Tiger Cat 50
Mini Adventure, 50ADV
Senior, 50SX Mini, 50SX
Junior 2008, 50SX Mini 2009
LX1, CX2, LXR50, RX2AIR, RX2
JR50
50C1
PW50, TT-R50E
and similarly specified machines as approved by the Board may be used.
Machine Requirements:
a)
Engine capacity must not exceed 50cc,
b)
The gearbox for 2-stroke machines must have one gear,
c)
The gearbox for 4-stroke machines may have up to three gears,
d)
Standard gear ratios must be retained,
e)
The clutch must be of centrifugal type, and of OEM type,
f)
Wheels as per General Competition Rule 20.17.3 must be fitted,
g)
The appearance of a machine must remain as manufactured provided that the following may be altered:
i)
Colour,
ii)
Seat,
iii) Mudguards,
iv) Handlebars,
v)
Grips,
vi) Levers,
vii) Cables,
viii) Chains,
ix) Tyre brand and tread pattern,
x)
Carburettor Jets,
xi) Spark Plug.
h)
The frame of a machine may be gusseted and strengthened but not so as to alter the geometry of the frame. A certificate issued by a
qualified engineer in respect of any such gusseting and strengthening must be available at machine examination,
i)
The restricting washer in the exhaust header pipe abutting the cylinder barrel may be removed,
j)
Throttle limiting devices may be removed,
k)
A separate kill switch may be installed in place of the standard,
l)
Steel serrated foot pegs may replace standard rubber pegs,
m)
Handlebars must be securely plugged and be no wider than 630mm,
n)
Engine, Carburettor, Fuel system, Exhaust System, Electrics & Air Box must remain as per manufacturers specifications,
o)
Carburettor size must not exceed 14mm.
50cc Auto Class Machines
Eligible Machines are:
MANUFACTURER
Cobra
Gas Gas
HM
Husqvarna
Italjet
KTM
20. DIRT TRACK
MODEL(s)
King CX50
EC 50
CRX 10/10 Senior, Baja
10/10, X3R
Husky Boy SF03, CR50
Action Outlaw
SXR PRO SNR, 50SX, SXR
PRO JNR, 50 SX 2009
RX3, RX3 2008, LX2FUSA, CR2, CR2S
RCX10
XR3
50 C1
MKX50
and similarly specified machines as approved by the Board may be used.
20. DIRT TRACK
2014 MANUAL OF MOTORCYCLE SPORT
20.17.2.2
20.17.3
CLASS
Machine Requirements:
a)
Engine capacity must not exceed 50cc,
b)
The gearbox must have one gear,
c)
External gearing may be altered,
d)
The clutch must be of centrifugal type, and of OEM type,
e)
10” rear wheels must be fitted.10” [254mm] or 12” [304mm] front wheels may be fitted,
f)
The appearance of a machine must remain as manufactured provided that the following may be altered:
i)
Colour,
ii)
Seat,
iii)
Mudguards,
iv) Handlebars,
v)
Grips,
vi) Levers,
vii) Cables,
viii) Chains,
ix) Tyre brand and tread pattern.
g)
The frame of a machine may be gusseted and strengthened but not so as to alter the geometry of the frame. A certificate issued by a
qualified engineer in respect of any such gusseting and strengthening must be available at machine examination,
h)
Throttle limiting devices may be removed,
i)
A separate kill switch may be installed in place of the standard,
j)
Steel serrated foot pegs may replace standard rubber pegs,
k)
Handlebars must be securely plugged and be no wider than 630mm or OEM for the model,
l)
After market exhaust systems and silencers are permitted.
Junior Solo: Wheel Sizes
FRONT
[Approx. Metric Equiv. in mm]
10” [254] or OEM for the model
10” or 12” [254 or 305]
14” to 15” [356 to 381]
16” to 17” [407 to 432]
50cc Demo Class
50cc Auto Class
65cc
80cc 4-stroke Standard & Modified
REAR
[Approx. Metric Equiv.in mm]
10” [254]
10” [254]
12” [305]
14”
[356]
85cc 2-stroke & 150cc 4-stroke
85cc 2-stroke & 150cc 4-stroke Big Wheel
15” to 17” [381 to 432]
19” to 21” [482 to 534]
85cc 2-stroke & 150cc 4-stroke Big Wheel (Dirt Track & Track)
19”
[482]
85cc 2-stroke & 150cc 4-stroke Standard Wheel (Dirt Track & Track)
14” [356]
16” to 19”
[407 to 482]
16” or 17”
[407 to 457]
17”
[457]
14”
100cc
18” to 21” [457 to 534]
125cc & over
17” to 21” [432 to 534]
250cc 4-stroke
17” to 23” [432 to 586]
16” to 19”
[407 to 482]
16” to 19”
[407 to 482]
16” to 19”
[407 to 482]
[356]
20.17.4
20.17.4.1
Junior Solo: Handlebars
Solo handlebars must be plugged and have no greater than the following widths:
20.17.5
20.17.5.1
20.17.5.2
20.17.5.3
Junior Dirt Track
Type of tyre to be used in Junior Dirt Track competition must be stipulated in the supplementary regulations
Motocross knobby tyres on the rear of any machine over 85cc 2-stroke and 150cc 4-stroke are not allowed.
4-stroke non-motocross type machines 80cc to 160cc, excluding 80cc 4-stroke Modified, are approved for Dirt Track competition under the
following conditions:
a)
Exhaust systems may be modified or changed.
b)
External gearing and carburetor jetting may also be altered.
c)
No other modifications are allowed
85cc 4-stroke modified. OEM Frame, two valve cylinder head, standard gearbox and number of gears to be retained.
CAPACITY
50cc Automatic
65cc
85cc 2-stroke / 150cc 4-stroke
Over 85cc / 150cc 4-stroke
20.17.5.4
HANDLEBAR WIDTH
630mm or OEM for the model
750mm
800mm
850mm
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