During the recent race at the Circuit of the Americas (COTA), several NASCAR drivers experienced failures with their cooling suits, causing significant health risks on the track. AJ Allmendinger had to be placed in a supine position after the race while medical staff attended to him due to heat-related issues.
Not every driver uses a cooling suit, and issues are not common every race, but when these systems fail, they can seriously endanger driver safety.
Denny Hamlin Explains Why Cooling Systems Malfunction
Denny Hamlin spoke about the cooling suit problems in detail during the Actions Detrimental podcast, highlighting the critical flaw when temperatures rise during races. He pointed out that the heat generated inside the car overwhelms the cooling suits, particularly when the cars slow down.
It seemed like there was some cool shirt issues, and that’s definitely the downside to it is that if it does not work it is worse than not having it at all,
Hamlin said.
I think the car heat soaks. That’s what I think is causing these things to go bad, is that they’re going out when temperatures are up.
Hamlin noted that cooling suits rely heavily on airflow, which diminishes drastically when the car is no longer moving at high speed.
Once the car goes to caution, all the heat gets trapped inside because you’re not cutting through the air,
he explained.
You’re not having the air push that hot air.
He added an analogy to clarify:
It’s like having a fan on an ice cube. You’re driving, it’s blowing and that gives your cool air. Well once you go caution, your car stops going fast, you shut the fan off. Then you don’t have that cube pushing air onto you anymore. In the hot sense, right, the car just gets really, really hot during cautions. And I think that’s when these cool units are failing. They’re getting overheated and tripping, and that’s when they’re out for the count.
Hamlin’s Personal Experience and Observations
Although Hamlin does not use a cooling suit himself and thus avoided these issues during the Texas race, he sympathizes with those who rely on them.
I know it makes a lot of guys feel certainly better and what not,
he admitted.
I think I’ve just, my body’s just gotten used to it from doing this for so long that just the heat doesn’t really bother me.
Hamlin expressed frustration over the lack of clear solutions, especially given NASCAR’s strict rules governing airflow within the cars. This restriction limits how teams can attempt to improve cooling for drivers.
I don’t know, Hamlin said.
I know that NASCAR’s very, very strict with these teams on restricting airflow to the drivers and their cool units. … All I know is that NASCAR really frowns upon diverting any air that should be going to the driver.
Understanding the Impact and Future Challenges
The failure of cooling suits at high-profile events like COTA raises concerns about driver health and safety in extreme heat conditions. The combination of heat soaking inside the car and restricted airflow during caution periods makes it difficult to maintain effective cooling.
This issue underscores the tension between NASCAR’s regulations on airflow and the need to protect drivers from dangerous heat exposure. While Hamlin’s insights shed light on the problem’s cause, finding an effective fix may require reevaluating current airflow limitations or developing more reliable cooling technologies.
As races continue in hot climates and intense conditions, addressing NASCAR cool suit issues will remain a critical priority to ensure driver well-being and competitive fairness on the track.
