What diameter is the tungsten weight in Pinewood Derby?

Tungsten weights are a common weighting material used in Pinewood Derby competitions to optimize the center of gravity of the car, increase speed and stability. Compared to lead or steel, tungsten can provide more weight in a smaller volume, allowing competitors to adjust the weight distribution of the vehicle more flexibly.

Typically, the most common cylinder tungsten weights used in Pinewood Derby competitions are about 3/8 inches (9.5mm) in diameter, which is suitable for drilling and embedding in the bottom or side of the car body. In addition, there are different specifications of weights such as 1/4 inch (6.35mm) and 1/2 inch (12.7mm) to meet different installation needs. If tungsten spherical weights are used, the diameter is usually between 1/4 inch (6.35mm) and 1/2 inch (12.7mm), while the size of flat or square tungsten blocks varies depending on the design.

The correct use of tungsten weights can greatly affect the performance of Pinewood Derby. For optimal speed, it is generally recommended to place the weight as close to the rear axle as possible to optimize inertia and reduce air resistance. Jinxin 3/8 inch cylinder tungsten weights can meet your general needs, and we can also help you customize the appropriate weights.