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The width of the car shall not exceed 2-3/4 inches. The length of the car shall not exceed 7 inches. Check in template will govern clearance requirements.
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The weight of the car shall not exceed 5 ounces or 142 grams as measured at check in withofficial scale. It is recommended that car be as close to 5 ounces as possible for best performance.
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The original amount of bottom clearance of 3/8 inch must be maintained. Check in template will govern clearance requirements. No weights or materials that decrease this clearance will be allowed.
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The Leading edge of car must not extend past starting gate.
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The axles, wheels, and body wood shall be as provided in the official BSA Pinewood Derby Kit. One axle may be pulled on each car to verify that the axles have not been modified.
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Diameter, width, and profile of wheels shall not be altered from their original form as provided in the kit. Original “as molded” surface finish must be clearly present. You may remove the mold parting line seam from the wheels.
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All four wheels must touch the track. Check in template will govern.
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Wheel bearings, washers, pads, and bushings are prohibited. Wheels must bear against wood or painted wood.
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The car shall not ride on any springs.
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Details added must not exceed width, length, weight requirements and must be secured to car with glue or fasteners.
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The car must be freewheeling with no starting devices.
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No loose materials of any kind are allowed in or on car.
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No oil, grease, lubricant, non-stick, or lubricating coatings, other than dry graphite or dry white. Teflon, shall be used on axles. No additional applications will be allowed after check in. Please do so over a trash can if applying at check in.
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No wheelbase modifications and no extended wheelbases will be allowed. The stock axle slot dimensions must be used. The distance between the axles and the distance from the front of the car to the first axle must be maintained.
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Car numbers will be issued on stickers at check in and affixed to the top of car. It is OK to put numbers on top and sides but issued number will be used for scoring.
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Race officials will hold all cars passing inspection until competition is concluded
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.Race officials will put the cars on the starting line, start the race and retrieve the cars.
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Repairs after check in will be allowed for wheels and axles only. Detail parts such as drivers, steering wheels, fenders… will not.
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Should the electronic scoring system fail, repairs will be attempted to correct the problem and the race will be rerun. In the event of a complete electronic scoring system failure, the official judges will decide winners of each heat.
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If a car leaves the track, runs out of its lane, interferes with another car, loses an axle, etc., the heat will be rerun. If the same car gets into trouble on the rerun, the car will be disqualified and that heat will be rerun without the disqualified car.