GS Service Unit 440
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Derby Races > Rules & Car Specifications

  • The car must have been built in the current Scout year (after September 2016) using an official BSA car kit. 
  • The car must be Scout-made but adults are encouraged to actively participate.
  • All cars must be weighed in and inspected on Impound Day (see info below).  Once weighed and inspected, cars will remain with the Race Staff until after the race.  NO MODIFICATIONS can be made after Impound Day.
  • Wheels can be sanded to remove ridges, but may not be tapered.
  • No wheel bearings, bushings or washers of any type may be used (except as weights if desired).  The car may not have any type of springs or self-propelled starting devices.
  • Only dry lubricant may be used and it an only be applied to areas where wheels come in contact with car/axels.
  • The maximum weight of the car may not exceed 5 ounces.  The scale used at Impound Day will be the official scale.  BRING WEIGHTS WITH YOU to make final adjustments.  Weight is the single most important factor in the car’s speed.Dimensions for the finished car are as follows:Width cannot exceed 2 ¾ inches, including wheels and axles
  • Length cannot exceed 7 inches
  • Height cannot exceed 4 3/4 inches
  • Ground clearance must be at least 3/8 inches
  • Minimum width of car where the axles are inserted into the body must be 1 ¾ inches
  • Added accessories such as windshields, driver, etc., are permitted from other sources and may be used as long as width, length and weight restrictions are met.  Accessories must be permanently attached.  Colored wheels with the BSA insignia are permitted.
  • Race Staff will use care to place all cars on the race track starting line in a consistent manner.  Participants and Spectators are not allowed to comment, contest or otherwise complain about the placement of a race car on the starting line. 
Girl Scout Service Unit 440