Pinewood Derby Rules and Regulations

Pinewood Derby Rules and Regulations (PDF)

  1. Length, Width, Height, and Clearance
    • Maximum length shall not exceed 7 inches.
    • Maximum overall width (including wheels and axles) shall not exceed 2 ¾ inches.
    • Minimum width between wheels shall be 1 ¾ inches, so the car can clear the guide strip.
    • Minimum clearance between the bottom of the car and the track shall be 3/8 inches so the car will clear the guide strip.
    • Wheelbase (distance between front and rear axles) may not be changed from the original 4 3/8 inches.
    • Maximum height of any part of the car is 10 inches.


  1. Weight and Appearance
    • Weight shall not exceed 5 ounces. The reading of the official race scale will be considered final.  Car may be hollowed out and built up to maximum weight by the addition of wood or metal only, provided it is securely built into the body or firmly affixed to it.  No loose material of any kind will be permitted in or on the car.  Anything falling off the car after the race starts, cannot be put back on the car.
    • Mercury may not be used for adding weight.
    • Details such as steering wheels, driver, spoiler, decals, painting, and interior detail are permissible as long as these details do not cause the car to exceed the maximum length, width, and weight.
    • Cars with wet paint will not be accepted.


  1. Wheels and Axles
    • Only the Official BSA Scout Grand Prix wheels and axles may be used. No aftermarket wheels or axles are permitted.
    • Axles may be deburred and polished. Wheels may be lightly sanded to remove casting burrs.  This light sanding is the only wheel modification allowed.  Beveling, tapering, thin sanding, wafering, or lathe turning of wheels or axles is not permitted.  “Speed wheels and axles” are not permitted.  Any and all wheel and axle modifications must be done with normal household shop tools.  The use of CNC machines or manual lathes, etc. are not permitted. The Committee’s judgment and/or decision on cars appearing to have machined wheels or axles will be final.
    • Wheel bearings, washers, or bushings are not permitted.
    • The car may not ride on any type of springs.
    • The car must not have any starting devices or other propulsion (must be freewheeling).
    • Hubcaps are not permitted.


  1. Lubrication
    • Either dry powdered black or white graphite may be used. NO liquid lubricates.
    • Cars may be lubricated prior to check-in. No further lubrication will be permitted.


  1. Ground Rules
    • The race is open to all Cub/Webelos Scouts registered in good standing with Pack 350. There will an Open Division race for siblings, Moms and Dads, or others, as needed.
    • Cars must have been made after 01/01/2018. Older cars will race in the Open Division only.
    • If a car jumps off the track, the heat will be run again. If the same car jumps off the track a second time, it will automatically lose the heat.  The car will be reviewed by the Race Committee as to its race worthiness.
    • If a car leaves its lane and interferes with another car, the heat will be run again. If the same car leaves its lane again and interferes with another car, the heat will be run again without the offending car.
    • If a car suffers a mechanical problem, i.e. loses an axle, breaks a wheel, etc., and a repair can be made in a reasonable time (5 minutes), the heat will be run again. If not, the car will automatically lose the heat.
    • Order of finish will be determined by the Finish Monitor(s).
    • Only Race Officials and the boys that are racing are allowed in the finish line area.
    • The Open Division is open to all, however, the car must pass the same inspection as the other cars.
    • Owners must be present to race.
    • Once the car passes inspection and is weighed in, it is placed on the table. It may not be touched, changed, handled, or modified.  Removing the car from the table is subject to disqualification.
    • No off-brand kit cars are allowed. Only the official BSA kit is allowed.


  1. Inspection and Disputes
    • Each car must pass inspection by the Inspection and Weigh-In judge(s) before they compete. The IWIJ has the responsibility to disqualify those cars which do not meet the rules.  Car owners will be informed of the violations and given an opportunity to meet those rules.  The car must be made to pass inspection by the posted registration closing time of 9:30 am.
    • Any participant (including the parent of a participant) has the right to appeal to the Race Committee for an interpretation of these rules. In the case of a tie vote, the decision of the   Race Judge will be final.
    • Unsportsmanlike conduct by ANY participant or member of the audience will be grounds for expulsion from the competition and/or race area.
    • Any arguing from parents will be ground for disqualification of that individual’s car.
    • All cheering will be non-specific and chants of a scout’s name or group will be addressed as needed.


  1. Race Committee
    • The Race Committee will be structured as follows: Race Judge, Inspection and Weigh-In Judge(s), Pit Monitor, Table Monitor, Finish Monitor(s), and the Bracket Manager.
    • A judging will be done for the special awards. The judging is done after the Scout Racing is completed.