What is the diameter of a Pinewood Derby wheel?

1.190 inch

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Keeping this in view, what are the dimensions of a Pinewood Derby car?

Designing the car[edit] The standard pinewood derby block is approximately 7.0 inches long by 1.75 inches wide by 1.25 inches tall. It has a typical density of 0.0138 lbs/in³. The block is supplied unsanded with grooves cut on the bottom side to accept the axles. The blocks weigh approximately 3.4 ounces.

One may also ask, can you sand Pinewood Derby wheels? Lightly Sanded BSA Wheels Wheels must be the original shape as packaged in the Official Cub Scout Grand Prix Pinewood Derby Kit. The only work allowable to any wheel is to remove manufacturing defects such as burrs or injection flanges. Wheels may be sanded until the mold seam is removed.

Considering this, what size are Pinewood Derby axles?

Pinewood derby axles are one inch long, 0.087 inch diameter zinc plated steel nails. The minimal axle treatment is the removal of the burrs and crimp marks with a file, followed by sanding and polishing. When it is allowed by the rules, the axle shaft can be cut with grooved and the head tapered.

Can you put weights under a Pinewood Derby car?

The weight should not extend past the rear of the car. Glue bottom weights to the bottom of the block to bring the total weight (including wheels and axles) to 5 oz. Install some of the weight behind the rear axle and the rest in front of the axle.

Related Question Answers

Can a Pinewood Derby car have 3 wheels?

— 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.

Should I bake my Pinewood Derby car?

Should I bake the pinewood derby block? The short answer is no, do not bake the block. The idea behind baking the block is to remove moisture which will make the block lighter. You can then add more weight to the back of the car.

Is there a minimum length for pinewood derby cars?

The overall length of the car shall not exceed 7 inches. The overall width of the car shall not exceed 2 ¾ inches. The car must have 1 ¾” clearance between the wheels. The car must have 3/8” clearance underneath the body so it does not rub on the center guide rail.

Can you reuse a Pinewood Derby car?

1.01 All cars entered must be newly built, using all new parts after September 1 of the current school/Scout year from the stock materials provided in the Official Pinewood Derby Racing Car Kit (part# 17006). NOTE: Reusing car bodies, axles or wheels from previous years is a violation.

How do you put wheels on a Pinewood Derby car?

Pinewood Derby Axle Installer

1. Lubricate the wheel and axle - Slide the axle into the wheel.
2. Place the wheel/axle on the base with the pointed end of the axle up.
3. Place the Axle Guide in the axle slot.
4. Hold the Axle Guide in place with your thumb then gently press the car body straight down on the axle.

What can you use for weights on a Pinewood Derby car?

I was looking for a quick, easy way to add weight to a Pinewood Derby car. You can use lead or tungsten, but they are relatively expensive ($1 - 2 per ounce), come in odd shapes, and you have to figure out a way to attach them to the car.

How can I make my Pinewood Derby car faster?

Seven Steps for Making the Fastest Pinewood Derby Car

1. Max out your Pinewood Derby car's weight at 5 ounces and make sure the heaviest part is about 1 inch in front of the rear axle.
2. Use lightweight wheels.
3. Use bent polished axles.
4. Railride.

How do you make pinewood derby wheels fast?

How to Build a Fast Pinewood Derby Car in 6 Steps

1. Step 1: Reduce friction to speed up your car.
2. Step 2: Lubricate Axles and Wheels.
3. Step 3: Prepare and Polish Axles - Essential for Speed.
4. Step 4: Balance and tune your Wheels to Maxiumize Speed.
5. Step 5: Add Weight to Increase Inertia.

How do you remove burrs from a pinewood derby axle?

Drill, vice or pliers.

1. Inspect your axles for flaws.
2. Check that your axles are straight by either rolling them on a flat surface or spinning them in a drill.
3. Carefully remove the burr on the head of the axle and crimp marks on the axle shaft with a jeweler's file.

How do you lubricate a Pinewood Derby car?

How to use:

1. Put one drop of lubricant on an axle.
2. Tip the axle so down and let the lube flow to the end of the axle.
3. Insert a wheel into the axle.
4. Spin the wheel several times.
5. Remove the axle and wipe off the lubricant with a clean, soft rag.
6. Reinsert the wheel into the axle and attach to your car.

How do you groove Pinewood Derby axles?

Polished Pinewood Derby Axles

1. Straighten the axle.
2. True the axle head so that it is at a 90 degree angle to the axle shaft.
3. Remove Crimp marks.
4. Remove Burrs.
5. Taper the head slightly to reduce contact area with the wheel.
6. Cut a shallow groove in the axle shaft to act as a lubricant reservoir (on grooved axles).

Can you paint Pinewood Derby wheels?

Painting the mock wire wheels silver and raised letters white won't make your car go any faster, but it will make it look better. Use a silver enamel model paint and a fine brush to paint the spokes. The brush should be nearly dry and gently touch the side of the brush to paint the raised spokes.

How do you balance Pinewood Derby wheels?

All tires are out of balance even though they were turned on a lathe. You then balance out the wheel by removing the excess weight from the heavy side or by adding weight to the light side [by adding nail polish or something] until a balanced wheel is achieved.

Where do you bend Pinewood Derby axles?

We recommend installing axles with a 1.5° bend for the front of the car and 2.5° bend for the rear. The axles heads are marked in the direction of the bend. Install the axles with the mark straight up. The alignment procedure requires turning the axles while they are in the car slot.

How thin can a Pinewood Derby car be?

The Thin Cut car has these advantages: If your rules allow it, raising one wheel will make your car faster. Light weight car block so you can add extra weight to the car to maximize speed. Thin cut to 1/2" high, making the car sturdy yet light weight. Official BSA car block, legal in all races.

What do you polish Pinewood Derby axles with?

Use wet/dry sandpaper starting with CAMI 400 grit (30 micron = 30 μm = 0.03 mm). Cut the sandpaper into 1/4" strips that are several inches long. Dip the paper in water and sand the exposed portion of the axle for approximately 30 seconds with the axle rotating at high speed. Don't forget to polish under the axle head.

Should I sand the wheels on a Pinewood Derby car?

Lightly Sanded BSA Wheels This wheel should be legal in pinewood derby races that specify any of the following: Wheel diameter must be greater than 1.18". The wheels may be slightly sanded to remove any mold marks but may not be modified in any other way.

Are Bent Axles legal in Pinewood Derby?

Axles are LEGAL in all races. LATHED shaft and underside of axle head to remove Crimp marks and Burrs - these must be removed to make your car fast. POLISHED axle shaft to minimize friction, increasing your car speed.

Where is the best place to put the weight 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.