Todd Kluever is one of many ASA racers who rely on the UnderX on race day.
Fire ranks as one of the greatest fears of any racer. Most will take all precautions possible to keep fire from ruining their equipment or their careers. In the past, the idea of a good fire-suppression system and a fire-resistant driver's suit seemed to be adequate. Now, more drivers are starting to realize that's not enough.
The use of fire-resistant underwear and head socks is still facing a long road to acceptance. For those who want to be as sure as possible, there's no need to sell the idea. They just need material that will do the job.
Ringers has marketed the UnderX line of racing underwear. Developed from the material CarbonX, which is also used in DriverX gloves, UnderX has been thoroughly tested and has withstood direct-flame tests.
"This material takes a direct flame of 3,000 degrees F for 120 seconds," says Ringers Automotive Sales Manager Todd Carroll. "On the other hand, Nomex burns after four seconds. The CarbonX wicks the moisture away.
In its use under the driver's suit, UnderX is a very lightweight material. Considering the bulk of a multi-layer driving suit and tremendous body heat, this lightweight material is certainly a welcome relief to the racer.
UnderX is available as long- or short-sleeve top, pants, or shorts. There are also single-eye and double-eye head socks. There is a rationale behind the shorts. Many racers wear them in place of the standard cotton boxer shorts, then wear the pants over them under the driver's suit. "That way, you have two times the protection," adds Carroll.
CarbonX was tested against other fire-resistant material. The Limit of Oxygen Index is the ratio of the minimum oxygen volume required to keep an object burning. A higher LOI rating means a lower flammability.