There is absolutely no doubt about how important pit stops are to a race. Like I’ve said here before, a team can’t win the race on pit road, but they certainly can lose it. A perfect example of this happened last weekend at Darlington. Jeff Burton brought the field to pit road as the leader with only a few laps remaining. His crew chief, Todd Berrier, called for the crew to bolt on two tires to keep their track position, and hopefully win the race. A mistake during the pit stop though, and the subsequent penalty, killed any chance for a win and saw Burton finish eighth.
In case you missed what I’m talking about, watch the doomed pit stop here. Front tire changer Dan Blizzard struggles just a touch with his on pattern (tightening the lugnuts) and the jackman drops the jack too early. If you watch very closely, you will see that jackman Adam North is watching Blizzard like a hawk. North is waiting for him to make his normal move showing that he’s finished with the lugnuts, which signals North to drop the jack. During his on pattern, Blizzard’s body makes just a small shift in position and North takes that shift as the sign that his front changer is finished. Blizzard isn’t done though and Burton, who is leaving on the drop of the jack, runs over the air hose which results in a penalty.
The normal rule they teach guys on two tire pit stops is for the jackman to drop the jack once the tire changer is at the right headlight. That gives the changer enough time to get out of the way of the car leaving the stall. As a crew works together and becomes more familiar with each other though, those tolerances become much smaller.
Let me show you an example of a very tight two tire stop. This video is of Kyle Busch’s crew, posted to Twitter by JGR Coach Mike Lepp (@mlepp). In the video you will see front changer Nick Odell hit his fifth nut, and make just a small move to leave before jackman Jeff Fender drops the jack. Odell is well short of the right headlight. And the result is Busch leaving the stall quickly, missing Odell by only a few inches.
As you can see from the two examples, the margin for error is very small. A normal two tire stop, which the #31 CAT guys have executed to perfection hundreds of times before, goes awry. Why? The answer lies in the familiarity among the crew.
The jackman sees his changers hit lugnuts everyday. And the majority of the time, they are very good. In this case, both front guys and the jackman were part of the winning crew from the 2009 Pit Crew Challenge. We aren’t talking about amateur or inexperienced guys here. They are among the best at what they do. What can happen though, is the jackman (or any other crew member for that matter) can get lulled into a false sense of security. He’s used to seeing the same thing, over and over, from his guys. This time, a small hiccup changed the normal rhythm. Add to that a little pressure with the race on the line, and you have a small mistake that costs a team the win.
So who’s ready to be a pit crew guy?
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