What makes pinewood derby cars fast




















Use lots of graphite. Be sure to get plenty around each wheel and on the axle. It works! After my research, my son and I wanted to do one final test to prove that this is a good list. So we built a simple Pinewood Derby car using this list in 45 minutes, and we beat the fastest Pinewood Derby car in our local race by two car lengths. Turns out, science works! Meet Mark Rober. During this time, he worked on Curiosity, a car-sized robot that left Earth in , landed on Mars in , and has been exploring, conducting experiments and sending back pictures ever since.

Now Mark makes high-tech Halloween costumes. If riding on only three wheels, why not eliminate the fourth wheel altogether? Should the car also be as low as possible to minimize the air flowing under it? That fourth wheel still must be in place to guide the car. It might not touch the floor of the track but it still is needed to follow the center guide rail.

Other than putting the weights in the back, does it matter if they sit on top of the car or should they be under the car? Does changing the center of mass affect the performance? The idea is that the car will ride lower overall and will help to reduce drag. Seems to work well. Just entered a car in our work pine derby tournament that had 50 entries. You want to know all the tricks and secrets to fast pinewood derby cars? Then you need "Speed to the Finish", the most complete pinewood derby manual available to today.

Click here for More Information. Let's make this simple. To achieve Key 1 and Key 2 can take some trial and error. But you only get one chance a year to test out a design! What do you do? If you would like to eliminate the trial and error, thus maximizing your chance of a trophy win and maximizing the value of your time then consider our Car Plan Booklets.

Each booklet has step-by-step instructions and full-scale templates for three winning designs. These plans implement Keys 1 and 2, so you don't have to worry about them. Short on time or woodworking tools? They are pre-shaped for aerodynamics and pre-drilled for weight, and come complete with instructions and weight.

Just assemble, sand, paint, and add wheels and axles to have a great looking and top-performing car. Does Key 2 sound intimidating? Official BSA Speed Wheels are mold number matched and have been precision-machined for top performance. Official BSA Speed Axles have the burrs and crimps marks removed, a slightly tapered head, and are partially polish.

Just a light polishing and these axles are ready to go. Pinewood Derby Speed Kit To ensure that your car is fast there are a few critical tools and supplies. To ensure that you have these supplies, and to maximize the value of your time, we offer Speed Kits. These Speed Kits include:. Click Here For More Information. The 5 Keys to Pinewood Derby Performance Champion car builders have discovered many secrets for getting the most speed from a car. Key 1: Lubrication - Quality lubricant; applied properly Lubrication is an extremely important key.

Key 2: Wheel Axle Preparation - Axles - no flaws, straight, polished; Wheels - no flaws, polished All frictional losses in a pinewood derby car come from the wheels and axles.

Next, prepare the nails. Place the nail in the chuck of a drill and use a Mini-File to remove the flashing under the nail head and minimize the ridges on the shaft.

Beveling the nail head slightly is also a good idea. If you are in a race using Awana or Maximum Velocity kits, the mini-file is not needed. Optionally use the Pro-Axle Press to ensure that the nails are straight and round. Finally, polish the axles with an Axle Polishing Kit until they are bright and shiny.

Avoid overzealous sanding with coarser papers, as that will reduce the diameter of the axle not desirable. Key 3: Alignment - Car goes straight, or rail-rides In order for the car to get to the finish line as quickly as possible, it needs to go straight. If you don't want to try rail-riding, then make sure your car runs as straight as possible.

Key 4: Maximize Momentum - Maximum weight; Weight towards the rear of the car In an automobile, momentum helps the car keep rolling when you take your foot off the gas. Key 5: Aerodynamics - Profile and body features minimized to improve air flow If you had asked me several years ago, "How do I make my pinewood derby car go fast? There are many elaborate ways to improve aerodynamics, but to simplify matters, let's use the following principles: Low-profile cars smaller surface area as viewed from the front of the car will tend to outperform higher-profile cars.

Cars should taper from a smaller surface area in the front to a possibly larger surface area in the rear. Edges running across the car should be rounded or tapered. Wings, sails, flags, pennants, etc. Rank Insignia. Webelos Activity. Tents Accessories Shelters.

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