2012 FIM Technical Rules Motocross

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• For Quad vehicles with exhaust outlet moved from the median axis, the measurement will be made on the offset side. To make repetitive measurements, all motorcycles can be positioned into a small frame fixed on the ground. THE NEW 2 METRE MAX METHOD – THE OPERATION – PROTECT YOUR HEARING – USE EAR PROTECTION • The measurement is made with motorcycle on its wheels, with a hot engine. • The technical steward takes place besides the motorcycles, opposite to the microphone, not to screen or stand between the bike and the microphone. A mechanic, placed on the left side of the motorcycle, shall disengage the clutch. • If a second steward is permanently attending the sound level checks, it is strongly advised for him to use earplugs, a headset or ear protectors. • The Inspector shall open throttle as fast as possible until full open throttle (instantly, within 0.3 seconds). He will keep at max engine ‘rpm’ for at least 1 second. To end, the inspector will release the throttle quickly. • If the result exceeds the limit, including ‘after fire’, the Inspector shall test the motorcycle, maximum 2 times more. • For motorcycles equipped with an engine rpm limiter, opening the throttle will be made - instantly, within 0.3 seconds - and kept open until at least 1 second has evolved and/or when there is an audible sign of over revving the engine. • For motorcycles without an engine ‘rpm’ limiter, the opening of the throttle will have to be lower than 2 seconds and/or when there is an audible sign of over-revving the engine. • If the engine tends to suffocate, close the throttle slightly and re-open the throttle. • If detonations appear, the measurement must be started again. 40 General(e) Section
The numbers obtained from the test shall not be rounded down. For the sound level measurement, the handling of the throttle is limited only to the Inspector, who shall open the throttle himself in order to minimize the influence by another operator (for that, it is helpful to have the microphone equipped with an extension cable to the sound meter). POSITION OF THE SOUND METER IN RELATION TO THE MOTORCYCLE 41 General(e) Section
Page 2 and 3: Technical Rules General Section Rè
Page 4 and 5: 01.77 CONTROL .....................
Page 6 and 7: Group B1 Vehicles with three wheels
Page 8 and 9: 11.15 Wankel system For Wankel syst
Page 10 and 11: 25.01 The use of titanium in the co
Page 12 and 13: 31.04 On a Sidecar machine the exha
Page 14 and 15: 01.39 FOOTRESTS For specific detail
Page 16 and 17: 50.02.1 Race Procedures (Race proce
Page 18 and 19: 50.03.3 Handlebars For specific ref
Page 20 and 21: IMPORTANT: As a condition of entry,
Page 22 and 23: Low power accumulators provided for
Page 24 and 25: The accumulator installation must e
Page 26 and 27: 01.55 NUMBER PLATES For specific de
Page 28 and 29: Lead replacement petrols, although
Page 30 and 31: Gas chromatography (GC) is an analy
Page 32 and 33: FlM WORLD CHAMPIONSHIPS AND PRIZE E
Page 34 and 35: All helmets must be marked with one
Page 36 and 37: Canada CMA White and 3 Red Maple le
Page 38 and 39: 77.01.4 Technical inspections will
Page 40 and 41: THE 2 METER MAX METHOD - IN FOCUS L
Page 44 and 45: Throttle THE IMAGE OF THE SOUND MEA
Page 46 and 47: 01.80 GUIDELINES FOR USE OF SOUND L
Page 48 and 49: Junior MX (2012) 2 metre max method
Page 50 and 51: NUMBERS / NUMEROS 48 O
Page 53 and 54: INTERNATIONAL HELMETS ber of the ST
Page 55 and 56: TECHNICAL RULES FOR MOTOCROSS (CMS)
Page 57 and 58: 01.01 INTRODUCTION For the main art
Page 59 and 60: 01.19 MOTORCYCLE WEIGHTS Weights of
Page 61 and 62: 01.37 THROTTLE CONTROLS Snowmobiles
Page 63 and 64: 01.49 TYRES FOR MOTOCROSS 49.02 Sco
Page 65 and 66: For the solo classes of the Individ
Page 67 and 68: • the side number plates: the ent
Page 69 and 70: For Supermoto Riders must wear a co
Page 71 and 72: 76.05 Width of stroke: 3 cm 76.06 M
Page 73 and 74: 77.02.14 If a motorcycle is involve
Page 75 and 76: With the FIM ‘static’ test meth
Page 77 and 78: 01.82 SPECIFICATIONS FOR SNOWMOBILE
Page 79 and 80: 82.13 Driving tracks These must be
Page 81 and 82: On the rear, the vehicle must have
Page 83 and 84: MOTOCROSS 81 E
Page 86 and 87: NUMBERS / NUMEROS O FIM WORLD CHAMP
Page 88 and 89: SNOWMOBILE SCOOTER/NEIGE 86 M CMS
Page 90: 88 CMS

2012 FIM Technical Rules Motocross

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