17.0  Supplemental Rules
 

The Rules listed are changes only for the Devil's Bowl Speedway Dual Race event July 8th & July 9th.
Do not bring specialized dirt racing parts to this event.  If you have a question, ask by text.

  • Participation
    • Teams must participate in both the July 8th and July 9th events to qualify for payout.
      • Minimum 5 laps per event unless involved in incident.
         
    • Tires
      • New tires only allowed for the July 8th pavement event
      • Used tires only for th July 9th pavement event.
      • Tire Grooving
        • Tire grooving methods may be changed on a race to race basis
        • Races that utilize tire grooving must be run on used tires with the exception of teams competing in their first event.
        • Teams that utilize a new tire must start last in the heats and feature events.
        • The only approved tire grooving method is:
          • No Sipes allowed (Razor type cuts)
          • Horizontal grooves only
            • Must be with #4 blade
            • The tread pattern has zig zags or waves.
              One groove on the high point of each wave is required.
              (Click the image to the right for larger view.)
               
    • Shock absorbers / Springs
      • All rules are in effect
      • Shock and Springs used in July 8th event may not be changed for July 9th
      • Position of Shocks and Springs may be changed
         
    • Rear end ratio
      • final drive cannot exceed 5.25
      • Gear ratio change is not allowed between events
         
    • Windshield
      • Full windshield required