Pinewood Derby Car Guide (2024)

Driving a car has always brought with it a sense of freedom and adventure, and nowhere is this sensation more keenly experienced than on a race track. Unfortunately, racing does have its risks, and drivers must be of a certain age before they can even begin training to compete. Kids may play with toy cars, but until 1953, there was no child-friendly car racing environment. Today, kids across the world can experience the thrill of racing through a Pinewood Derby.

What is a Pinewood Derby?

The Pinewood Derby is a race, usually hosted by a Cub Scout Troop, in which members race their homemade pinewood race cars. Cars can be as fancy or as plain as desired and strict weight restrictions mean that the boys need to wisely distribute the weight allowed to help make the car faster. Each pinewood car is propelled by gravity down a steep wooden race track, racing two or three others at a time. The first car to reach the bottom is the winner.

Rules for Racing

Each Cub Scout Troop will have their own set of rules for Pinewood Derbies, but there are a few constants which appear in all races. The pinewood car, for example, can weigh no more than five ounces. It can be no longer than seven inches long and two and three-fourths of an inch wide. The bulk of the car itself must be constructed from a pre-approved kit, and anything to artificially assist speed – wheel bearings, lubricating oil, or springs – is strictly prohibited. Similarly, pre-constructed cars are not allowed, since it defeats the purpose of each scout creating their own.

Building a Pinewood Derby Car

The basic components of a Pinewood Derby car haven’t changed since the 1950s. A block of pinewood, four wheels, and four nails make up the starter kit, and many cars are made from these items alone. Coins, melted lead, and other metal weights can be added to the car, as long as the car doesn’t exceed the weight limit. The trick to building a car with a good chance of winning is to make the car as heavy as possible and to make sure that the wheel axles are straight, which will help reduce wobbles and bumps.

The construction of a Pinewood car begins with shaping the car’s body. Streamlined cars may have a better chance of winning the race, but prizes are given out for aesthetic as well. If a child already has their eye on a “dream car” for when they begin driving, why not make a small mock-up of that car for the race? Parents are encouraged to help their child with the car’s construction and decoration, but it must be the child’s own creation.

Wear appropriate safety equipment, like goggles or a dust mask, when working with the wood to prevent sawdust from irritating the eyes or lungs. Inserting the wheels is fairly straightforward, but be sure to check for little metal bits, or “burrs,” on the back of the axle. These burrs can be left behind from the manufacturing process, and they can also make the wheels catch, which will reduce the car’s speed. Once the car is complete, test runs can be a good way to troubleshoot any last-minute issues before race day.

What to Do on Race Day

Each pinewood car must be inspected and approved by a committee before it can compete, so before leaving for the race, double-check that the car meets all requirements. Once the car has been handed over for inspection, all that needs to be done is to sit back and enjoy the races. The officials will bring the various cars to the track and place them in position, and will record wins and losses. During the race portion, it’s important to remember to encourage scouts to display good sportsmanship. Cheering for friends’ cars can mean a more fun day for all involved, and more celebration if one of the cars wins. The end of the race day will conclude with the distribution of medals or trophies for the speed and style categories. Winners of the speed category are welcome to enter in the Pinewood Derby World Championship, and from there, the adventure can only continue!

Pinewood Derby Car Guide (2024)

FAQs

What's the best shape for a Pinewood Derby car? ›

The Wedge is the foundation of many cool car designs, and it is designed to be aerodynamic and is a one-cut wonder.

What is the most important thing to make Pinewood Derby car faster? ›

Much has been written about the physics of pinewood derby cars, and this is one rare case in racing where heavy = fast. Aerodynamics have little effect in such a short race, but weight does and putting the weight at the back of the car will make your car faster on the flat of the track.

Which wheel should be raised on Pinewood Derby car? ›

Raised Front Wheel

The wheels are a significant source of potential energy drain on a Pinewood Derby® car. Raising the non-steer wheel (typically the front left) so it does not contact the track reduces the amount of energy used to start the wheels spinning.

Should I bake my Pinewood Derby block? ›

Baking your Pinewood Derby wooden block helps to remove the moisture so that you have more wiggle room to add extra weight at the end. Remember, every little bit of weight in the right place makes a difference! Bake it in the oven at 250° for about 2 hours.

Should weights go on top or bottom of Pinewood Derby car? ›

Most PWD experts believe a car is faster when the weight is predominately placed towards the rear of the car. Why? Because most tracks are designed so a car rolls down the track on an incline from a height of 3.5 feet -‐ 4.5 feet before traveling down a long flat stretch.

Is it better to have a heavy or light Pinewood Derby car? ›

In most races, the maximum allowable weight of a pinewood derby car is five ounces. By meeting this maximum limit – while also strategically placing your weights at the rear of your vehicle – you will improve your momentum and increase the distance your car travels towards the finish line.

Should I glue Pinewood Derby axles? ›

Slide the axles and wheels onto the car and glue into place. Use an epoxy or nonresin glue, and make sure you don't get any on the surface of the axle where the wheel rides.

Should you sand Pinewood Derby car wheels? ›

Use the high grit (1000) sandpaper to sand the edge of the wheel while spinning it with the drill. Do not over-sand; you want to sand just enough to remove the flashing. With modified wheels, you'll want to sand off any burs from the cutting process but don't round over the edge.

Where is the best place to put weights on a Pinewood Derby car? ›

PUT MOST OF THE WEIGHT IN THE BACK

Science says the heaviest part of your car should be about 1 inch in front of the rear axle. The idea is that the farther back the weight is, the more potential energy you have because your center of mass is higher up on the track.

How to keep Pinewood Derby wheels from rubbing? ›

Use bent polished axles.

Bending your Pinewood Derby car axles with a bending tool will make the wheels ride up against the nailhead, which creates less friction than if the wheel is bouncing around and rubbing against the wooden Pinewood Derby car body.

What are the best dimensions for a Pinewood Derby car? ›

The front edge of the wheels must be behind the nose of the car (100% of the car behind the starting peg). Length: Car cannot be more than 7 1/8 inches long. Width: Car cannot be more than 2 3/4 inches wide. Height: Car cannot be more than 3 1/8 inches tall.

How to build the best Pinewood Derby car? ›

For a fast car, you want the add more weight to the rear. The arrow car shape, for example, has a definite pointier front and slim body with cut-in sides that lead to a flared back end. You will want to ensure that the weight is slightly heavier near the rear wheel axle, so add weight to the flared back end.

What is the aerodynamic shape for Pinewood Derby cars? ›

Remember, a rectangular car is not an aerodynamic design. The most basic aerodynamic design is a simple wedge. If you don't have time to design a complex car, a wedge will work just fine.

Is a shorter Pinewood Derby car faster? ›

However, as with most facets of Pinewood Derby®, there is a trade-off between speed and stability regarding wheelbases. The shorter the wheelbase, the more potential there is for speed. However, the shorter wheelbase can also lead to instability, slowing the car.

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