Products


Seat Belts

Fabrics:

There are two types of fabric used in seat belts: Nylon and Polyester.

Nylon:

  • Does not hold its adjustment well - drivers have to continually tighten them while racing.
  • On impact, will stretch up to 12-15% when dry, and in excess of 20% when wet.
  • Deteriorates from UV exposure.
  • Is not approved for any FIA Sanctioned Racing.
  • Most of the Lever and Latch Seat Belts available in New Zealand are made form Nylon.
  • Nylon is no longer used in road cars.

Polyester:

  • Is less likely to creep in its adjuster.
  • Stretches up to 6% whether wet or dry.
  • Is not affected by UV
  • Motorsport New Zealand has extended the useable life of Polyester belts to five years past their expiry date because of their superior performance and durability.

The following Brands are generally Nylon Lever & Latch Belts:

  • Silvester
  • RJS
  • Impact
  • Ultrashield
  • Deist
  • G-Force
  • RCI
  • Simpson
  • Hooker
  • Quickcar
  • Pyrotect
  • Racetech
  • Crow

Polyester Lever & Latch Belts available in New Zealand:

  • Simpson - Platinum
  • Safety Solutions
  • Impact - Platinum
  • Schroth


Mounting

The correct mounting of your seat belts is just as important as what material the belts are made of.
Always keep your belt mounting points as close to the driver as possible. 
Six Point Belts control the body better than Five Point Belts.

Lap Belts

  • Never wrap lap belts around chassis tubes etc.
  • Fasten lap belts with a double shear bracket or Hook and Eye as close to the seat as possible.
  • Lap belt fastening should be 45-65 degrees backwards and down from the drivers pelvis.
  • Lap belt adjustment should always be pull up, not pull down.
  • Lap belt adjustment only needs to be on the right side.
  • Fewer points of adjustment mean less possibility for your belts to creep in an impact.

Shoulder Belts

  • Fastening your shoulder belts by wrapping around is ok.
  • Ensure that you always loop the free end of your belt back through the three bar adjuster for a 3rd time.
  • The angle of your shoulder belts should be between 0 and 10 degrees down form your shoulders.
  • The belts should pass cleanly through the belt holes on your seat.
  • Crutch or Sub Straps should be fastened to the base of the seat.


Belt Dumping:

  • Is the most common cause of seatbelt failure after wear or chaffing.
  • Is also the easiest to aviod.
  • When your seat belts have been tightened, always ensure the the free end of the belt lays parallel to the tight end.
  • If the belt is not square through the adjuster, all of the load during an impact is taken by a single strand on the short side of the belt. This causes the belt to tear.
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