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(c) (d)

(e) (f)


T9-1-3 (a) (b) (c) (d) T9-1-4 T9-1-5 (a)

(b) (c) T9-1-6 (a) (b)

(c) (d) T9-1-7

coupling must be fitted from the first third of the silencer to the frame (steel cable of at least 3mm. for reasons of safety). Springs may not be used to attach exhaust pipe to frame. The outlet of the silencer over a length of 50mm must not exceed 45mm internal diameter, or have any slots, holes or perforations. It must discharge horizontally and parallel to the centre line of the machine (tolerance +/- 10deg.), and must not extend beyond the rear vertical tangent, or end further forward than the centre (axle) of the rear tyre. All sharp edges must be rounded with a minimum radius of 2mm. The end of the silencer must be cut at a right angle with a rounded edge minimum 5mm diameter. The gap between the silencer and the rear tyre must not exceed beyond 60mm. The silencer must be of a mechanical or „baffleâ€&#x; type, with permanently fixed internal pipes and plates to achieve the required maximum sound level. A straight tube, directly connecting the inlet and outlet of the muffler, without deflection of exhaust gas is not permitted. An exhaust extraction (megaphone) effect must not be caused by the positioning of any tapered, conical, or other shaped parts. The silencer must be detachable at the inlet end for control purposes. If, during a race, a silencer or any part of the exhaust system becomes displaced or detached so that all the exhaust gases fail to pass through the silencer, the rider must be immediately excluded from that race. Footrests Right-hand footrests must be of rigid construction but may be able to swing and not be more than 320mm from the centre of frame to the outside end of footrest rod. The outer edge of the footrest to be suitably protected (Donald Smith type footrest acceptable). Auxiliary footrests of no greater length than 50 mm may be fitted to front left engine plate, or if fold-up type no longer than 120mm fully extended. Fold-up footrests to be fitted so as to fold up and back should a fall occur. Brakes: Any brake on a motorcycle is prohibited. Clutch Levers All clutch levers shall be ball ended, the ball to be not less than 16mm diameter. The ball can also be flattened (on the handlebar side), but edges must be rounded (minimum thickness of flattened part 14mm). These ends must be permanently fixed and form an integral part of the lever. The clutch lever shall not exceed 175mm in length from the fulcrum to the end of the ball. Inside of the clutch lever to be rounded. The lever must be mounted so as to swivel to prevent a riderâ€&#x;s fingers from being trapped. Handle Bars Maximum width 900mm, minimum width 700mm with the ends securely capped or plugged. When light alloy handle bars are used, the distance between the two extremities on the clamping area (2 clamps) must be not less than 120mm. Clamps must be radiused and engineered so as to avoid causing fracture points in the handle bars. The repair by welding of light alloy handle bars is prohibited. If hand protectors are used, they must be of shatter resistant material and have a permanent opening for the hand. Racing Numbers (Refer also to Section T7)



2010 NZ Speedway Rule Book  

2010 NZ Speedway Rule Book