What are some rules for pinewood derby?

- The main body structure must be made of pine wood. The substitution of other woods (i.e. harder, denser, heavier woods) is expressly forbidden.
- Weights are preferred to be inset in the body or on top of the car to aid in a safe stop at the end of the track. Weights on the bottom of the car may drag on the raised guide rail for the track slowing the car considerably and potentially damaging the track.
- No part of the car or attachment to any car, which is metal, pointed, sharp, and/or jagged, may be capable of contacting any part of the track. Only the vehicle’s wheels should touch the track.
- Drilled holes or slots can be used to mount axles.
- ONLY DRY LUBRICANT(s) ALLOWED. No oil lubricants are allowed.
- Width - Not to exceed 2 3/4 inches
- Length - Not to exceed 7 inches
- Weight - Not to exceed 5.0 ounces on scale accurate to 1/10 ounce.
- Center Rail Width - Must clear center guide rails, typically no less than 1-3/4 inches minimum.
- Bottom - No less than 3/8 inches from track surface between center rails. 1. Fender flairs with less clearance are acceptable as long as the center rail width clearance is maintained.
- The following items are PROHIBITED: 1. Springs 2. Starting devices or propellants 3. Electronic or lighting devices that interfere with the race electronics. 4. Liquids, wet paint, oil, sticky substance, or powders of any kind (other than axle lubrication) 5. Glass or excessively fragile parts 6. Bearings, bushings, washers, sleeves, hubcaps or inserts attached to or in contact with the axle, body or wheels. 7. Loose objects on car 8. Magnets 
- Use only Official Pinewood Derby wheels.
- Outer wheel surface may be lightly sanded, shaved, or polished to remove surface imperfections, mold casting burrs, and correct off center wheel bores. • All 4 wheels MUST touch the track 
- Nail type axles are required.
- Axles must be mounted into the wood sections of the car.
- Axles may NOT be bent.
- The use of exposed Lead(Pb) in cars is prohibited. All Lead(Pb) must be completely sealed and safe from all possible contact. There are many reasonably priced alternatives that should be used instead.
- All weights should be secured firmly to the vehicle with glue, screw, putty or wooden plugs. Loose or unsecured weights will not be allowed. Weights that fall from cars during racing may not be reattached. https://www.races2u.com/what-are-some-rules-for-pinewood-derby/