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All seat belt and shoulder harness installations must be mutually compatible, originally designed to be used with each other, and produced by the same manufacturer. All belts must be adjustable and be able to be adjusted whilst in the normal seated position. All seat belts must swivel on their mounting points. If seat belts mount wrap around (wrap over) tubing, the tubing must be at 90 degrees to the line of the belt. Wrap around belting must be secured by a 3 bar sliding adjuster, of heavy-duty construction, 75mm for 75mm webbing and 45 mm for 45 mm webbing. Seat Belt mountings that are concealed by panels are to be made easily visible to vehicle checkers at inspection time. Seat belt webbing must not be twisted. Chain link and "D" shackle mountings are not permitted. The seat belt must be worn correctly at all times when vehicle is in motion. Crotch belt or sub-belts anchoring point to provide a direct pull from the quick release mechanism. The lap and crotch strap should not pass over the sides of the seat but through the seat, in order to wrap and hold the pelvic region over the greatest possible surface. The lap straps must fit tightly in the bend between the pelvic crest and the upper thigh. Under no conditions must they be worn over the region of the abdomen. Holes may be made in the seat if this proves to be necessary in order to avoid such an occurrence. Seat belts must not pass over sharp edges, at any point where the belt passes through the sides of the seat, the seat edges must be rolled and or have grommets to prevent chaffing or cutting of the belt material. Seat belts showing signs of chafing against sharp edges must be rejected. Under no circumstances may seat belts be secured to the seat. The seat belt straps may be wrapped around the safety roll cage or to a reinforcement bar, or belt buckles bolted to seat belt mounting plates. Wrap around harness webbing mounted over lower chassis rail is not permitted. Where eyebolts are used, eyebolt must be fully into mounting, no back spacers permitted. The angle of approach to the webbing must be in line with the eye bolt ring. (See Fig. 1, page 92) The shoulder straps must be directed towards the rear, directed downwards with an angle of between 1째 and 40째 to the horizontal from the top of the shoulder, an angle of 10째 being recommended. (See Fig. 2, Page 92) The belts must be anchored within 250mm of the back of the seat, or pass through guides within 250mm of the back of the seat. The mounting points or guides must be no more than 150mm apart with their centre point 90 degrees to the seat back. Where the shoulder straps pass through the seat the edges must be rolled or have grommets fitted to prevent chafing or cutting of the strap material. Check the entire harness for chaffing; stitch damage, or hardware corrosion. Under no circumstances can cutting and resewing of webbing or modifications to hardware be permitted.

2010 ELECTRONIC RULEBOOK

90

2010 NZ Speedway Rule Book  

2010 NZ Speedway Rule Book

2010 NZ Speedway Rule Book  

2010 NZ Speedway Rule Book

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