Quote:
Originally Posted by Rick Parker
FYI the red balls were inserted in the hubs of the Competition cars to aid the pit crews in changing the tires quickly, it gave them a point to "Aim " at when chainging a tire in the heat of the battle, just like the current Sprint Cup guys, although their hubs are painted red.
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I know they used to paint the spinners red on the right and blue on the left to remind the pit crew which way to turn the spinner on changes. Red right Clockwise tightens, Left Blue clockwise loosens.
Some modern teams in different categories still do that to this day (Porsche comes to mind).