Episode Details

NASCAR Cool Suit Failures: A Tale of Speed vs. Comfort

In the recent NASCAR Cup race at the Circuit of the Americas, several cool suit systems malfunctioned, leaving drivers to endure scorching cockpits. The issue wasnt primarily due to faulty hardware, but rather a result of teams prioritizing speed and aerodynamics over driver comfort.

Teams often design the cooling hoses and car openings to be extremely narrow to reduce drag, which unfortunately restricts airflow to the cooling units. Without sufficient cool air, the chillers stop working, trapping hot fluid in the drivers shirts. This situation is worse than not wearing the suit at all, as the hot liquid absorbs body heat and cockpit warmth rapidly.

AJ Allmendinger required assistance after overheating severely, while other drivers had to endure the discomfort due to impractical pit stops for draining. Power choices also play a significant role, as teams reduce voltage to accessories like cool suits to conserve engine power and fuel. This can cause the units to shut down mid-race, particularly in NASCARs smaller versions.

NASCAR has now implemented stricter hose routing rules for cooling systems and requires teams to submit plans. Other series like IndyCar and Formula One use similar setups, but Formula One has added a battery to avoid power issues. Failures remain infrequent in sports cars with larger units.

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