In the world of motorsports, the pursuit of competitive advantage and the well-being of drivers is constant. An example of this is the popularization of cooling shirts in NASCAR, an innovation that has revolutionized the comfort and performance of drivers.
The Origin of a Revolution
Although many drivers were unaware of its origin, the implementation of this technology is attributed to Chad Knaus, Jimmie Johnson’s crew chief. Knaus, always at the forefront of innovation, recognized the need to improve Johnson’s physical condition and control his body temperature, especially prone to heat problems and cramps.
“I was the first driver to use it, but the one who started it was Chad Knaus”
Jimmie Johnson
The testing process was peculiar. Knaus, with the help of one of his mechanics, simulated the extreme conditions inside a car in the workshop, using the cooling shirt to evaluate its effectiveness. The result was surprising, and Johnson began using it around 2018 or 2019, keeping the secret to gain an advantage over his competitors.
Over time, the use of these t-shirts became widespread, becoming a common practice among NASCAR drivers.
The Operation and its Benefits
The cooling shirt is a garment that incorporates tubes through which a cold fluid circulates. This technology has transformed the experience of pilots, who previously used methods such as ice packs or fans. The difference is notable.
“It’s like jumping into a pool on a hot summer day. It feels great. It’s amazing”
Joey Logano
The improvement in physical endurance is evident, allowing drivers to stay fresh and focused during long races. Michael McDowell highlighted the importance of these shirts, especially with the arrival of the Next Gen car in 2022, which led to an increase in the temperature inside the vehicle.
Some drivers, like Shane van Gisbergen, freeze their shirts before the race to maximize their cooling effect. However, not all drivers use it in every race, depending on the weather conditions.
The System and its Challenges
The shirt (or vest) connects to a pump that can be located anywhere in the car. This pump circulates water and an antibacterial and antifungal solution to keep the system clean and prevent obstructions. System failure is a latent risk, and when it occurs, the driver faces extreme heat conditions.
Despite these risks, most drivers recognize the importance of the cooling shirt to stay cool at the end of the race.
Weight is a factor to consider, but it has been accepted as a necessary cost to ensure the performance and freshness of the pilots. The jersey can add between 6.5 and 7 pounds to the total weight of the equipment.
Tyler Reddick sums up the importance of this technology: “I think what it does to cool the body is probably the most efficient thing we have.”
