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 no-lead 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
The Small Tungsten Canopy is just over 1-1/2 inches long and just under 1 inch wide. The height above the car body is just under 1/3 of an inch. The mounting stud is 3/8 inch in diameter and 1/4 inch long. Your shipment will contain one Small Tungsten Canopy weighing 2.5 ounces, with a nickel, gold, or black color.
The Small Tungsten Canopy can be easily used for pinewood derby car weighting if the weight of the car body, wheels, and axles is less than 2.5 ounces. Drill a 25/64 inch diameter hole into the top of the car body (generally the hole is drilled all the way through the car). Apply epoxy in the hole, and spread just a little epoxy on the top of the car as well. Mount the canopy and allow it to dry.
Since the Tungsten Canopy is 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. In the photo, 3/16 inch tungsten cubes are used.
a2.5 ounce nominal weight - actual weight ranges from 2.4 to 2.5 ounces