2009 Manual of Motorcycle Sport - Motorcycling Australia

17 MOTOCROSS AND SUPERCROSS17.4 FUEL- MOTOCROSS ANDSUPERCROSS17.4.0.1 Fuel for all machines must:a) Be Unleaded, andb) Be no more than 100 RON, andc) Contain no additives other thanthose added at the point ofmanufacture except for:(i) lubricating oil for 2-stroke engines(ii) Upper cylinder lubricant for 4 strokeenginesd) Be readily available from retail petrolpumps within Australia, ore) Be a brand of fuel homologated byMA that is compatible with the “FuelQuality Standards Act 2000”17.5 SENIOR CLASSES- MOTOCROSSAND SUPERCROSS17.5.1 Machines Other Than Junior17.5.1.1 The capacity classes for machinesa) Other than for Junior competitions,b) Other than AustralianChampionships are:CLASS CAPACITIESLite 2-stroke 100cc to 150cc4-stroke 200cc to 250cc2-stroke from 165cc to 500ccOpen4-stroke from 255cc to 650cc17.5.1.2 Sidecars.17.5.1.3 Modern.17.5.1.4 Pre 1985 - Note Frame and motor must bemanufactured prior to 31 st December 1984.17.6 JUNIOR CLASSES- MOTOCROSSAND SUPERCROSS17.6.1 50cc motorcycles are to comply with GCR12.16.17.6.2 80cc 4-Stroke Class17.6.2.1 Machines in the 80cc 4-stroke classes mustremain standard with the manufacturer’sspecifi cations with the exception of:a) Exhaust system,b) Gearing,c) Carburettor jetting,d) Plastics, and148e) Handlebars.enjoy the ride17.7 COMPETITOR GRADING-MOTOCROSS AND SUPERCROSS17.7.1 Senior Grades - Motocross andSupercross17.7.1.1 The grades of competitors in Seniorclasses are:a) Pro Class,b) Intermediate Class,c) Clubman.17.7.2 Freestyle Motocross17.7.2.1 There are 2 levels of Freestyle MotocrossEndorsement:a) Freestyle Motocross,b) Professional Freestyle Motocross17.8 COMPETITION RULES - ALL AGESAND CLASSES17.8.1 Starting17.8.1.1 Unless otherwise determined in the SR,massed starts must be used.17.8.1.2 The order and position of each competitorwill be at the discretion of the Promoterand will be determined on the day of theevent.17.8.1.3 The starting grid for all events will:a) Have not less than 1 metre spacefor each solo motorcycle,b) Be in 1 straight line,c) Allow for no more than 40competitors.17.8.1.4 The maximum number of starters mustbe specifi ed in SR.17.8.1.5 Unless otherwise determined in the SR,for solo events:a) Individually backward falling devices,with each gate a minimum of500mm and a maximum of 600mmin height, must be used,b) A rear barrier must be placed toprevent riders from moving theirmotorcycles no more than 600mmback from the gate.17.8.1.6 Unless otherwise determined in theSR, for sidecar events, the width of thestarting grid must permit a minimum of 15machines in 1 row, with 2 metre space foreach machine.