To achieve excellent wheel alignment, an important factor in building a competitive pinewood derby car, using accurately drilled axle holes (instead of slots) is the method of choice.
This article explores techniques, bit size, and tools available to help you achieve excellent pinewood derby wheel alignment. Before drilling axle holes check your local rules to make sure they are allowed.Drill
|BSA||0.086 to 0.087||#44 – 0.086|
|PineCar||0.088||#43 – 0.089|
|Awana||0.092||3/32 – 0.938|
Hand Drill/Pin Vise
Figure 1 – Pro-Body Tool
Figure 2 – Inaccurate holes due to out of square blocks
Figure 3 – Vertical fence creates accurate holes regardless of block shape
Read the complete article in Pinewood Derby Times Volume 12, Issue 9.
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