How to Make a Fast Pinewood Derby Car
Packs around the country are preparing to hold their annual Pinewood Derby. There are many ways to make your Pinewood Derby car go faster. Here are some of them.
Basic Guidelines for Pinewood Derby Car Design
The possibilities are endless when it comes to picking a shape for your Pinewood Derby car. Before you begin, consider the following general guidelines:
Avoid designs with a pointed nose. A pointed nose will make it difficult for your Pinewood Derby car to rest on the pin at the starting gate. It may also cause your Pinewood Derby car to get bumped around when the pin drops, and it can create problems for electronic timing systems.
Leave enough wood in the rear of the Pinewood Derby car so you can place additional weight there. You will end up placing most of the weight in the rear of the Pinewood Derby car.
Make the maximum weight. Your car should weigh as much as it’s allowed. In most races, a Pinewood Derby car’s weight is limited to 5 ounces. If your car weighs less than that, add coins or other weights.
Be sure that it is very clear which end of your Pinewood Derby car is the front and which end is the back. In many races, the race officials —- not you -— will actually place each Pinewood Derby car on the track. Sometimes the officials put the Pinewood Derby car on the track backward because they can’t tell which end is which.
Choose a design that allows the air to move over and around the Pinewood Derby car body in a smooth manner. Pinewood Derby cars with aerodynamic profiles go faster.
Click here to see photo galleries of hundreds of Pinewood Derby car designs.
Designing and Building a Winning Pinewood Derby Car
You don’t have to strive for the fastest Pinewood Derby car to have fun competing in your Pinewood Derby. But if you and a helpful adult are willing to put in the extra time and effort, these tips are for you.
1. Bake the Block: Start with your block of wood, and before you do anything else, bake it in the oven at 250 degrees for around two hours to remove moisture and make it lighter. This will allow you to place more weight to the rear of the Pinewood Derby car where you actually want it.
2. Create the Design: Draw the outline of your Pinewood Derby car on a sheet of paper, cut it out and attach it to your block of wood.
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.
Click here to download a Pinewood Derby car template PDF to help you create your design.
3. Rough Cut the Design: Use a coping saw to cut out the rough shape of your Pinewood Derby car. You can also ask a responsible adult to make these cuts using a power tool.
4. Shape Your Car: Use sand paper to smooth your car’s edges and shape it to your design. An adult can also use a rotary tool or other tool to help you.
5. Sand and Paint the Pinewood Derby Car: Make it smooth to reduce friction and paint an awesome design to make it look great.
Click here for tips on painting your Pinewood Derby car to give it a shiny finish.
6. Install Axles and Wheels: Make sure they are aligned perfectly straight. You can test the alignment of your axles by pushing your car across a smooth floor or table. It should roll smoothly in a straight line.
— Make a Three-Wheeler: Raise one wheel about 1/16 inch higher so it never actually touches the track. Less friction = more speed. Rules vary from pack to pack, so make sure to check your pack’s Pinewood Derby rules to make sure three wheelers are allowed in your race.
— Extend the Wheelbase: The front and rear wheels should be as far apart as possible. Again, make sure this is allowed in your race.
Click here to learn about polishing Pinewood Derby axles and wheels to reduce friction.
7. Create Glue Holes: Glue the axles firmly in their holes to ensure that they stay perfectly placed, but make sure you don’t get glue on your wheels.
8. Add Weight: Remember to make your Pinewood Derby car as heavy as the rules allow. In general, it’s best to place weight to the rear of your car because a heavier rear increases speed.
Click here for scientific Pinewood Derby speed tips from a former NASA engineer
9. Lubricate the Wheel Well: Add graphite or another dry lubricant to reduce friction. The less friction between the body and wheel, the better.
And finally, remember the No. 1 rule of a Pinewood Derby is that it’s supposed to be fun. While you should always strive to do your best, don’t get caught up in winning or having the fastest car. Just enjoy the ride.
Adapted from the book “Pinewood Derby Speed Secrets,” DK Publishing, $12.95 softcover.
If you only have 3 wheels touching in our race you are breaking the BSA rules that are IN THE BOX!! You won’t race!! What happened to be trustworthy !!
Three wheeled cars are cheaters in our area.
I will work hard
I have never baked the block. My son won the Derby last year, but only by a small amount. Axles & wheels make all the world of difference! Push the weight to the limit and keep it as far back, towards the rear, of the car.
I want to go so bad.
This is cool.
“You do not want your car to be perfectly aligned, rail riders are much faster!” Will Someone please explain that comment? The idea seems to include friction, which would slow it down, not make it faster.
You were being sandbagged.
The extra friction cause by riding the rails is less than the extra friction caused by the car moving back and forth on the track. The only downside is if the track is not smooth. If that’s the case, then a rail rider could jump the track or bounce.
The thing to help balance the car is to also match the tires. Each tire has a mold number on the back of the tire. Matching all four tires will give good balance to the car. Avoid using mold number 13 as it has a nick on the inside of the tire which causes the car to wobble. We’ve had tire swaps in our pinewood derby clinics in our Pack. Lots of fun finding matching tires.
Hey does anyone know a practical application to this?
I wanted to do a science project on this for school, but I have trouble finding a practical concept or use for pinewood derby racing. Help? I thank you for reading this, but replying would be more helpful!
You do not want your car to be perfectly aligned, rail riders are much faster!
this is the best
so the pine wood derby car i mad was a truck but it came in first three times
that was so cool I like how you got that thing to make your car go faster that was so cool
i dont know how
I love this website.
The quality of your axles and wheels may be the most important factor in building a fast car. SO TRUE!
The quality of your axles and wheels may be the most important factor in building a fast car. Here’s how to choose and polish your axles and wheels. SO TRUE! I WON the race that way!
Bake it after making it
im making a derby car in science class this week
I’m going to make the best car ever vroom vroom let go get ’em!!
Nice job guiding me on how to make a PWD car I won first place because you showed me how to do it good.
wow i really learned alot from this…. thanks
I’m Going to make a fast car
NO. Bake it before you do anything else to the car.
I am going to make the best car ever.
I ruined my car because i baked it first 🙁
why did you bake it???
Explain how you ruined your car?
this is my third derby, and I haven’t been on the winner stand. I always get fourth
Put less wheel on the track tilt 3 wheels were you have as little wheel as possible touching the track less friction
Great article & tips. I’m making my own car for a fundraiser. These tips will make it more fun!
thanks for the tips, i am in webelos 1.
this is really helpful i’m building a car in school to race and it needs to be really fast
Where do I start, all it is now is a block of wood!
These tips are very useful. Thanks
thanks I’m working on a pinewood derby car and I’m a cub scout.
thanks for the tips
I want to get first instead of second because I get second every time but my pinewood derby is in about 4 or 5 days!!
I won second place every time but now I’m aiming for 1st place
the pinewood derby cars are awesome
I don’t know how to build one
How long is block for the pinewood derby car?
I won the tornoment
love it.frozen car
i lost last year!
I love this website please more wheel and axel!!!!!!!!!!
I relay don’t know if I should bake it or not! Pit Boss puts up a good claim but boys life is… well… boys life!!!!!HELP! My pinewood derby is in a few weeks! Also who is this pit boss???
IMPORTANT!!! Bake it AFTER the car is fully shaped, drilled and sanded (to remove the most moisture weight from the remaining wood and replace it with weight at the rear of the car, until you reach the 5 Oz overall limit).