Translations:AY Honors/Pinewood Derby/Answer Key/37/en
From Pathfinder Wiki
Axles must be in straight front to back. That is square to the body. True the axles, don’t trust the pre-cut grooves in the block! If you have one, use a drill press to ensure all axles are straight. One of the front and two of the back should be measured to be the same height. Having the axles perfectly parallel to one another is probably the single most important factor affecting the car's speed. If they are not parallel, the car will steer to the left or to the right, eventually hitting the center guide or a wall. This will slow it down, and it makes all that polishing a waste of time.
