Low-Rider GT
Standard Sports Car
Low-Rider GT
Extended Sports Car

Pinewood Derby Times
Volume 15, Issue 10
February 10, 2016

In this Edition:

- Editor's Notes

- Feature Article - Transforming that Block into the Ultimate Derby Car

- Humor

- Product Showcase - Tungsten Bars - $2.00 off

- Pinewood Derby Car Showcase

- Memory - The Thirty-Minute Car

- Q&A



Editor's Notes

Call for Photos
Help, we are virtually out of photos for the pinewood derby car showcase. Please send us a photo of your car along with a description of any special features to info@maximum-velocity.com.

Please include your full name. If selected, we will include the photo and description in this newsletter.

Photos must be sent by e-mail in JPG format (minimum size of 640x480, maximum size of 1280 x 960). Please shoot photos from the front left of the car, similar to the orientation of this car.

Make sure the photo is not blurry. If your photos are blurry, try holding the camera four or five feet away from the car, and then use the camera's zoom to fill the frame with the car. Also, use a solid (preferably white) background for the photo.

Send only one photo per car, unless an additional photo is needed to adequately show a feature. Don't forget to include your name, the name of the car (if it has one), and a brief write up on any design features, inspiration for the design, and how the car performed at the race. Thanks.

Can We Help?
If we can help you in any way with your pinewood derby project, or if you have any feedback regarding this newsletter, please contact us at: info@maximum-velocity.com
MV Basic & Wedge Car Kits

If you are planning a race and are not required to use a specific kit type, our MV Basic or Wedge Car Kit are just what you need. These attractively priced kits are equipped with:
  • Quality Block - Unlike the blocks provided by some organizations, our blocks are soft, northwestern pine blocks, cut precisely to 7 inches long, 1-3/4 inches wide, and 1-1/4 inches tall. These dimensions, as well as the axle slots accurately duplicate the dimensions of standard pinewood derby blocks from BSA and PineCar.

  • Simple Axle Preparation - Don't worry about filing off flaws, or losing hub caps. Our Speed Axles have no burrs or crimp marks, and install without hub caps. With or without polishing, they are ready to go. We supply five, so you have a spare.

  • Quality Wheels - Forget cheap, out of round wheels. Our MV wheels are top-quality wheels. You will not be disappointed with the quality of these wheels.

So, if your organization does not mandate a particular kit type, consider our MV Basic Car Kits or MV Wedge Car Kits


Feature Article

Transforming that Block into the Ultimate Derby Car
By Randy Davis

After waiting for a whole year, the time has finally arrived to transform a pine block into the ultimate pinewood derby car. I know it is tempting to draw a few lines and start cutting. But before that, ask yourself two questions:

  1. Where will the weight go? Depending on how much wood you remove, you will likely need to add between 2.5 to 3.5 ounces of weight. Too often car builders don't consider the need to add weight until after the car is shaped and painted. The time to deal with the weight is now, before cutting the block. So, figure out what kind of weight you will be using and where it will go.

    Speaking of where the weight will go ...

  2. Does the design allow the weight to be placed near the rear axle? For best performance most people recommend locating the center of gravity of the car at 3/4 to 1 inch in front of the rear axle. To accomplish this, you will need to place 1/3 to 1/2 of the weight behind the rear axle.

Sketching
Now that you know where the weight will go, draw the side profile of the car on both sides of the block, and draw the top profile on the bottom of the block. Then draw the location of the pockets/holes for the weight.

Prepare Axle Slots/Drill Axle Holes
If you are using axle slots, prepare them by pre-inserting a spare nail in each slot position, then twist and pull it out with a pair of pliers. This is more accurately accomplished with a Pro-Axle Guide1, or better yet, a Pro-Body Tool2 will accurately pilot drill the slots.

If you will be using axle holes, drill them now with a Pro-Body Tool or Pro-Body Jig.

Rough Cutting
The weight pockets/holes are much easier to create while the block is rectangular. So, begin the shaping process by creating the weight pockets/holes. Then begin shaping the block by removing the wood from the top of the car (using the drawing on the sides of the car), then remove the wood from the sides of the car (using the drawing on the bottom of the car).

Shaping
Shape the car using a rasp, file, coarse (60-grit) sandpaper, etc. If you have a steady hand, a Dremel tool is handy. If there are any gouges (boo-boos), fill them with wood putty.

Sanding
When the car is shaped as desired, sand the car with medium (120 and 220 grit) sandpaper, followed by fine (400 grit) sandpaper. If you want a nice finish, make sure that the car is very smooth. There should not be any visible marks on the car (with the possible exception of fine sandpaper marks on the bottom of the car, or on the back of the car where the wood end-grain is visible).

Preparing To Paint
The car is now ready to paint. A Paint Stand3 is a great tool, but if you don't have one I recommend inserting a long cabinet screw into the bottom of the car (screw it into a weight pocket if present) as a painting handle. The screw only needs to go deep enough to be firmly in place. Be careful not to run the screw completely through the car! Next, insert round toothpicks in the axle slots/holes. Now locate a place in a dust-free, shaded area where you can hang the car while it dries. In this location hang a short wire between two nails or screws such that the car can be suspended from the wire without touching a wall or other object.

If you will be using spray paint, put on eye and breathing protection. Then place a plastic bag over the hand that will hold the car and secure the bag with a rubber band around the wrist.

Painting
Paint the car following the recommendations on the paint can. For spray painting, I recommend starting with five coats of Rust-Oleum brand Filler Primer.4 After the primer dries, sand the car smooth with 800 grit wet paper. Then apply two coats of Dupli-Color-brand Perfect Match paint.4

If you intend to brush paint, then use an acrylic paint (water or alcohol cleanup). In general, I recommend using either lacquer or acrylic paints (Perfect Match is a lacquer). Avoid enamel paints as the cure time is quite long.

Drying
Between coats hang the car up to dry. Use a binder clip or clothespin to attach the screw to the wire. Make sure to follow the dry and re- coat instructions for the paint you are using. If you are careful and avoid runs, you should only need to sand after applying the primer.

Detailing
The car is now ready for numbers, decals, or other decorations. I prefer to use dry-transfer decals and/or pin-striping. Another option is paint stencils.5

Clear Coat
To get a better shine and protect the paint and decals, apply several coats of clear. Make sure to use a clear coat of the same brand and formulation as the paint (lacquer with lacquer, acrylic with acrylic, etc).6

Whew! That was a lot of work, but the car body is complete and it looks great. But if you want the car to be fast, your work has only begun ...

1Pro-Axle Guide

2Pro-Body Tool

3You can find a great paint stand Here

4Rust-Oleum Filler/primer and Duplicolor paint are available at auto parts stores.

5Paint Stencils can be found Here

6If you used Dupli-Color Perfect Match paint, use Dupli-Color Perfect Match Protective Clear Coat.



Humor

A courier was travelling across country on a horse. He was in a hurry and rode the horse too hard, so it foundered. Needing to continue on his journey, he went up to a nearby farm and asked the farmer if he could buy a horse.

"The only horse I have is this one," the farmer said.

"Fine, I'll take it," the courier replied and jumped on the horse's back.

The rather religious farmer told the courier how to control the horse. "Say 'Praise the Lord' to get the horse to go and 'Amen' to get it to stop."

So with a quick "Praise the Lord," the courier was on his way. He made good time, and his mind wandered as the countryside flew by. Looking up after a while, the courier realized that a cliff was coming up, but the horse was showing no indication of slowing down. He began to panic as the cliff loomed closer, and he found he could not remember the command to stop the horse. In a real fright, the courier prayed earnestly for a reminder, and finished his prayer with "Amen."

The horse came to a screeching halt at the edge of the cliff. Looking down over the edge, the relieved courier exclaimed loudly, "Praise the Lord!"



Product Showcase

  Tungsten Bars  
$2.00 off

Each Tungsten Bar is equivalent in weight and size to five of the 1/4 inch tungsten cubes. Tungsten Bars greatly simplify installing weight as fewer items need to be glued into the body. Tungsten putty, or smaller tungsten parts can be used for making weight adjustments.

Through February 23, 2016, you can get $2.00 off a 3.5 ounce package of Tungsten Bars. To take advantage of this limited time offer, add part 5055 to your shopping cart, then use coupon code FEB10NL during checkout.

Important Notes:
(1) The coupon code must be entered in UPPERCASE.
(2) Apply the coupon code after all items are in the cart. If the shopping cart content is changed after the coupon is entered, the coupon code may need to be re-applied before pressing the "Proceed to Checkout" button.



Car Showcase

Pretty in Pink - Rob Wagner

My daughter Lucie (9) picked this design out after seeing something similar online. She sketched out the template we used to cut it. The car took 2nd place in a combined Cadets and GEMS (like girl scouts) race. The kits we use have dowel rod axle struts that the screw axles mount into. We used the 5148-Pro-Body Tool on new dowel rods. It made all the difference. The car went straight and true the first try.

Scooby-Doo - Tony Grim

This car is one of your propeller car kits with a Scooby-Doo "Mystery Machine" model over the top. It raced the top leaders' cars and won by three car lengths. The kids at our race loved it.

Share Your Car With Our Readers

Do you have a car you would like to "show off" to our readers? If so, send us a photo of your car along with a brief description of any special features. Please include your full name. If selected, we will include the photo and description in this newsletter. Please e-mail photos to:
info@maximum-velocity.com.

Photos must be sent by e-mail in JPG format (minimum size of 640x480, maximum size of 1280 x 960). Please shoot photos from the front left of the car, similar to the orientation of this car:


For better focus, keep the camera four or five feet away from the car, and then use the camera's zoom to fill the frame with the car. Also, use a solid (preferably white) background for the photo.

Send only one photo per car, unless an additional photo is needed to adequately show a feature. Also, only one car per subscriber per year please. Thanks!



Pinewood Derby Memory

The Thirty-Minute Car

Two years ago we held a pinewood derby workshop as we do every year on the eve of our race. A boy named Chris came in with his car kit untouched. So we helped him cut out the design he wanted. He then took about ten or fifteen swipes across his newly formed car with sandpaper, and added some stickers. We helped add weight, install the wheels and axles, and lube the car. In all, he spent about 30 minutes on the car (in contrast, my two sons and I had about 15 hours in our cars).

The next day at the derby we all watched in complete astonishment as Chris' car raced down the track. It was very fast and was beating almost every car it raced! When the dust finally settled, he came in fourth place and was sent on to the district derby.

For that one young boy it was all he needed to feel like he was the greatest pinewood derby racer. Seeing the look on his face when he was handed the 4th place trophy, and his ear-to-ear smile was more than enough for me to want to help as many boys as possible in the years to come.

John Henderson
Garrett, Indiana

Share Your Pinewood Derby Memory!
If you have a pinewood derby story that is funny, unusual, sad, heart- warming, etc., please E-mail it to me.

Don't worry about literary polish. We will edit as needed. If your memory is used, you will receive a $10 coupon in May of 2016.

Also, please read our Submission Policy



Q&A

Which of your axles meet the BSA national Pinewood Derby guidelines and come deburred and polished?

Our 4097 axles are official BSA nails that have been deburred and partially polished.

Our 4094, 4056, 4035 and 4036 axles (all the same, just different treatment) are a clone of the BSA nail but without the flaws. They are a superior axle and we have never had any problem with legality. But admittedly, they are not the official nail.

Some other sites recommend graphite lube with "moly." What do you think? Is graphite with moly a superior product?

I do not recommend graphite containing molybdenum for pinewood derby use. Molybdenum is a hard metal that is used as a lubricant in some industrial processes which require a lubricant with no electrical conductivity, high pressure, and high heat. None of these conditions apply to pinewood derby racing. In our testing the addition of molybdenum to graphite did nothing for performance, but did scratch the axles that you just spent so much time polishing.

I bought your Axle Polishing Kit. I tried to follow your directions but it's hard to break habits. For example, the instructions said to polish for "at least 10 seconds". Well, I did at least 110 seconds per grit. My thinking was there's no way 10 seconds could do the same job as hours did with my oldest son's car. That car won, but time is tighter this year. Did I waste time by working the axles more than 10 seconds per grit? Can I get away with just 10 seconds and get same results?

Congratulations on your son's success!

I don't recommend sanding very long with the coarser grits, as the diameter of the axle gets reduced, which just makes the wheel/axle fit sloppier. So if you polish for 10 seconds, it is sufficient. On the fine grits you can go longer if desired.

Do You Have Questions that Need Answers?
Do you have a pinewood derby-related question? If so, send your question to: info.maximum-velocity@com. We answer all questions by e-mail, but not every question will appear in the Q&A section of the newsletter.



Back Issues

Are you a new subscriber, or have you missed some of the previous newsletters? Don't miss out! All of the issues for Volume 5 through Volume 15 are posted on our web site and can be found using our Newsletter Index.

Issues from Volumes 1 to 4 are available in four formatted documents, ready for immediate download. To find out more, Click Here.




Newsletter Contributions

We welcome your contributions! If you would like to contribute an article, a web site review, or a speed tip, please send it to: info@maximum-velocity.com.

Please read our submission policy.



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Randy Davis, Editor, Pinewood Derby Times
E-Mail: info@maximum-velocity.com

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