1.0b Chassis Frame and Cage
 
  • Mass produced 4 wheel vehicle certified for highway use.
    • 100% Electric Vehicles may use fabricated chassis.  Considered for approval on a case by case basis.
  • Wheelbase
    • Minimum of 80 inches
    • Must be stock wheel base for model chassis used.
  • OE Crush Structures
    • Cars that alter OE crush structures including removing frame rails or unibody structures outside of the wheelbase will be evaluated for safety and may fail safety tech at WTC official's discretion.
  • Roll Cage
    • Must meet approval of WTC.  May be fail at WTC official's discretion.
      • Attachment points will be evaluated. Those that lack reinforcement, ate thin or inadequate will cause the racecar to fail tech..
    • Bolt in cages are not allowed
    • Must include
      • Front hoop
      • Rear hoop
      • Front and rear hoop must be braced to each other along roof line
      • Minimum 2 drivers side door bars each side
        • X allowed
        • Design of door bars does not  have to match side to side
        • Top edge of the highest bar and bottom edge of the lowest bar must be at least 7.5 inches apart.
        • The top edge of the top door bars cannot be higher than the bottom of the side window.

         

      • Main hoop back stays (no bends)
        • Must attatch to the main hoop within 8 inches of the main hoop's highest point.
        • Must be forward of back edge of rear wheel well.
          • Small cars may be granted an exception
      • One main hoop diagonal bar
      • Appropriate spreader plates and gussets
      • Each major member must be made from a single continuous tube.
      • Shoulder harness bar  (15 degrees lower than harness entry point at seat.)
      • Dash bar recommended
    • Roll bar tubing
      • Cars less than 3000 lbs
        • 1.5 x .120
        • 1.75 x .090
      • Cars greater than 3000 lbs
        • 1.75 x 1.20
      • DOM mild steel tubing is recommended
    • Spreader Plates
      • Steel
      • Minimum 24 sq inches
      • 0.125 thickness
    • Cage must clear drivers head by at least 2 inches at all points.
    • Tow Strap Required
      • Marked
        • Arrow with word TOW recommended
      • Must attach to bumper or frame