What are you all packing your carbon fiber head surrounds with?
Thanks
Bob
What are you all packing your carbon fiber head surrounds with?
Thanks
Bob
I think the head surround should be a fiberglass or Kevlar piece. Carbon fiber in a crash is like a bunch of razor blades flying around. Don't ask how I know this.
I would use the same materials that you use to make a bead seat.
I made mine from the excess from my Bead Seat. Wrapped them in Nomex and they came out great.
Will Velkoff
Van Diemen RF00 / Honda FF
When helmet collars first appeared in the late '90s, they were padded with multiple layers of Confor foam. Each layer had a different density and stiffness. However, the temperature sensitivity of Confor significantly reduced its impact performance when hot.
The current requirement in the top-level series is rigid foam covered with Kevlar or some other high toughness fiber, in a resin with a low coefficient of friction. It is better for the helmet to be able to slide along the surface during an impact.
The big downside to rigid foam is one-time use, while Confor is largely unaffected by impact.
Our FIA Formula E head surrounds are Kevlar filled with Confor, same as in F1.
F1 does require either pink or blue Confor depending on the ambient temp
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