Information Bulletin #2003 18/12/2019 Affected Disciplines: Dirt Track and Track Information Pertains to: Dirt Track and Track Chapter Combination and Alterations to the 2020 MoMS Updated: It was a directive from MA and the MA Board to combine the Dirt Track and Track Chapters. The intention with combining these chapters is for equality and fairness, safety and simplifying the rules as these disciplines are similar, but not the same. Major changes implemented for 2020.
15.2 Junior class age brackets
Slider and MX bikes and classes are separated. (As per new rule 15.5.0.6)
Standard Wheel and Big Wheel bikes in classes will compete together.
15.5.0.6 Rule deletion
The Commission and the Rules and Technical Committee have approved this Chapter and these updates as they are presented. We understand that in doing this there will be teething problems and not everyone will be satisfied with all rules. If you wish to propose a change to these rules they can do so by following the Rule Change Process as outlined on Pages 6 & 7 of the MoMS. Current Classes Categories for Australian Dirt Track & Track Championship Classes; (as will appear in the printed 2020 MoMS) 15.1 SENIORS Pro 250 100cc to 150cc 2stroke / 200cc to 250cc 4stroke Pro 450 250cc 2stroke/450cc 4stroke MX Open 500cc 2stroke/Over 460cc 4stroke 250 Slider 150cc 2stroke & 250cc 4stroke 500cc Slider Up to 500cc Slider Open Unlimited 460cc and over Pro Open Women Unlimited Sidecar Up to 1100cc ATV Open Up to 550cc 2stroke/700cc 4stroke ATV Open Women Up to 550cc 2stroke/700cc 4stroke 15.2 JUNIORS 7-u9 50cc Auto Div 2 Non Championship 7-u9 65cc 9-u13 65cc 7-u10 85cc 4stroke Modified 10-u1485cc 4stroke Modified 9-u1211 85cc 2stroke/150cc 4stroke Standard Wheel 11-u1613 85cc 2stroke/150cc 4stroke Standard Wheel 13-u1685cc 2stroke/150cc 4strokeStandard Wheel 11-u1385cc 2stroke/150cc 4stroke Big Wheel 13-u1685cc 2stroke/150cc 4stroke Big Wheel 11-u16 85cc 2stroke/150cc 4stroke Girls Standard & Big Wheel 13-u1685cc 2stroke/150cc 4stroke Slider Only 13-u16 100cc to 150cc 2stroke 13-u16 100cc to 150cc 2stroke 200cc to 250cc 4stroke 13-u16 100cc to 150cc 2stroke & 200cc to 250cc 4stroke Slider Only 13-u16 200cc to 250cc 4stroke New/Updated Classes Categories for Australian Dirt Track & Track Championship & Competition Classes; (as will appear in the online 2020 MoMS) 15.1 SENIORS Pro 250 100cc to 150cc 2stroke / 200cc to 250cc 4stroke (MX) Pro 450 250cc 2stroke/450cc 4stroke (MX) MX Open 500cc 2stroke/Over 460cc 4stroke (MX) Pro Open Women Unlimited (MX) 250 Slider150cc 2stroke & 250cc 4stroke * removed due to lack of competitors 500cc Slider Up to 500cc Slider Open Unlimited 460cc and over Sidecar Up to 1100cc ATV Open Up to 550cc 2stroke/700cc 4stroke ATV Open Women Up to 550cc 2stroke/700cc 4stroke 15.2 JUNIORS 4-u9 50cc Demo Division 1 Non Competitive 7-u9 50cc Auto Div 2 Non Championship * rationale for change below 7-u9 65cc 9-u13 65cc 7-u1210 85cc 4stroke Modified * typing correction 9-u1311 85cc 2stroke/150cc 4stroke * 2 class options for 12 year olds 1211-u16 85cc 2stroke/150cc 4stroke 11-u16 85cc 2stroke/150cc 4stroke Girls Standard & Big Wheel 13-u1685cc 2stroke/150cc 4stroke Slider Only * removed due to insufficient entries 13-u16 100cc to 150cc 2stroke 13-u16100cc to 150cc 2stroke * removed due to duplication 13-u16100cc to 150cc 2stroke & * removed as several other class options 200cc to 250cc 4stroke 13-u16 200cc to 250cc 4stroke
Rationale for the 7-u9 50cc Divi 2 class being changed to a Non Championship class is to ensure the children are here for development and fun with as little pressure and stress on them to win as possible. We do not want children to be pushed prematurely. These are young children and should not be stressed to race and win an Australian Championship, they will have the rest of their riding lives to chase titles if they choose to do so. It is also the hope this will bring bike costs and affordability down.
New Rule 15.5.0.6 Slider and MX machines are to compete separately, in their specified classes.
Rationale being the Commission and the Rules & Technical Committee advise this is because they are different machines, with different styles, performance, machine requirements etc.
Rule removal The below rule is to be removed; 15.4.1.2 Riders are eligible to enter one class above capacity of the machine entered (senior riders only).
Rationale for this rule being removed, is that capacity machines should be racing with comparable machines as they were designed. This will reduce over subscribed combined classes and in turn will come back to competitors as more of their class events on track.
Number Board Colours for Juniors Tips to understanding and using the correct number board colours for your child.
Understand child’s age as at 1st of January of that race year (2020). For Example, my child turned 12 on the 20th of June 2019, so as at the 1st of January 2020 my child is 12 years old, and can compete in this class all year. If my child decides to move up to a 13 year old class throughout the year, they can no longer go back down and compete in 12 year old classes.
Chose a racing class (for example 9-u13 85cc 2stroke or 9-u13 65cc etc)
Identify the age bracket on the number board colour table (15.9.3.2) which is most suitable and colour will be Canary Yellow boards with black numbers)
You can only compete in one age group class.
Wheel Sizes; Several corrections and duplications have been identified and updated. Current Rule; 15.20.9 Wheel Sizes CLASS FRONT REAR Approx. Metric Equiv. in mm] [Approx. Metric Equiv. in mm] 50cc Auto/Demo Class 10” or 12” [254 or 305] 10” [254] 65cc 14” to 15” [356 to 381] 12” [305] 80cc 4-stroke Standard & Modified 16” to 17” [407 to 432] 14” [356] 85cc 2-stroke & 150cc 4-stroke 15” to 17” [381 to 432] 14” [356] 85cc 2-stroke & 150cc 4-stroke Big Wheel17”19” to 19”21” [432482 to 482534] 16” to 17”19” [407 to 432482] 85cc 2-stroke & 150cc 4-stroke Big Wheel17” to 19” [432 to 482] 16” to 17” [407 to 457] (Dirt Track & Track) 85cc 2-stroke & 150cc 4-stroke 17” [457] 14” [356] Standard Wheel (Dirt Track & Track) 100cc 18” to 21” [457 to 534] 16” to 19” [407 to 482] 125cc & over 17” to 21” [432 to 534] 16” to 19” [407 to 482] 250cc 4-stroke 17” to 23” [432 to 586] 16” to 19” [407 to 482] New/Updated Rule; 15.20.9 Wheel Sizes CLASS FRONT REAR Approx. Metric Equiv. in mm] [Approx. Metric Equiv. in mm] 50cc Auto/Demo Class 10” or 12” [254 or 305] 10” [254] 65cc 14” to 15” [356 to 381] 12” [305] 85cc80cc 4-stroke Standard & Modified 16” to 17” [407 to 432] 14” [356] 85cc 2-stroke & 150cc 4-stroke 15” to 19”17” [381 to 482432] 14” to 17” [356 to 432] 85cc 2-stroke & 150cc 4-stroke Big Wheel 17”19” to 19”21” [432482 to 482534] 16” to 17”19” [407 to 432482] 85cc 2-stroke & 150cc 4-stroke Big Wheel17” to 19” [432 to 482] 16” to 17” [407 to 457] (Dirt Track & Track) 85cc 2-stroke & 150cc 4-stroke 17” [457] 14” [356] Standard Wheel (Dirt Track & Track) 100cc 18” to 21” [457 to 534] 16” to 19” [407 to 482] 125cc & over 17” to 21” [432 to 534] 16” to 19” [407 to 482] 250cc 4-stroke 17” to 23” [432 to 586] 16” to 19” [407 to 482] Effective from: 1/1/2020 Note:
As rules can be changed throughout the year, please view the most up to date MoMS at www.ma.org.au
Please see the MA website for Rule Change Request processes and documents. www.ma.org.au
