For the 2016-17 season.
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The most complete source for pinewood derby speed tips and techniques on the market today!
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Pre-cut pinewood derby car kits, blocks, bulk kits, and more.
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Speed wheels, speed axles, competition components, and more!
Pinewood Derby Weight
Tungsten, lead, and steel weight for your pinewood derby car.
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Detailed car plans, with templates and step-by-step instructions.
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Tungsten Cylinders - 1 ounce
Pinewood Derby Weight
These Tungsten Cylinders weigh 1/4 ounce each, and measure 3/8 inch in diameter and are just shy of 1/4 inch thick. Your 1 ounce shipment will contain four, 1/4 ounce cylinders.
What is Tungsten?
The word "tungsten" literally means "a substance of high density", and is derived from the Swedish language, "tung", meaning "heavy," and "sten", meaning "stone." The name is appropriate as tungsten is a metal with one of the highest densities. In fact, tungsten is 1.7 times more dense than lead. Only gold, platinum, and a few other rare and expensive metals have a similar density.
Applications of Tungsten
Tungsten is completely non-toxic and environmentally friendly so it is gaining increased use in weighting applications where lead is not appropriate. For example lead has been banned in many streams, so tungsten is often substituted for lead weight on fishing flies. The high density coupled with the non-toxic nature makes tungsten an ideal metal for this application.
For similar reasons tungsten is a superior product for weighting pinewood derby cars. Tungsten is 3.2 times the density of the zinc ("Lead Free") weighting material often used on pinewood derby cars, thus it enables tremendous flexibility in the design of the car. Coincidentally, tungsten has been used by NASCAR for the metal roll cage and as frame ballast to lower the center of gravity of the race car.
How to Use this Product
Tungsten Cylinders can be easily used for pinewood derby car weighting by drilling one or more 25/64 inch or larger diameter holes into the block and then inserting the desired number of cylinders. The hole can then be plugged with a piece of 3/8 inch dowel rod or wood filler. Since the Tungsten Cylinders are very hard, do not plan to drill out any extra weight. Instead, use an alternate method to make fine adjustments such as adding/removing tungsten putty, beads, etc.