Shifting the Pinewood Derby Wheelbase

If race rules allow, the standard pinewood derby wheelbase can be shifted backwards.  Does this change improve the performance of a pinewood derby car?  This article explains methods of shifting the wheelbase, and documents an experiment on pinewood derby performance.  You can read the entire article and find out the experiment results in Pinewood Derby Times Volume 14, Issue 11.
Figure 1 – Shifted wheelbase

Figure 2 – Shifting the Wheelbase While Retaining the Original Slots

Figure 3 – Test Car
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