I am looking to get some information on your S1 Lifer Helmet. I purchased probably about 6 months ago and experienced a crash over the weekend during a derby bout. I was hit from behind (illegally may I add) and hit my head on the cement floor. I was checked for a concussion at the time and didn’t have one (props to you guys on building such a great helmet) but the conversation has been raised about the helmet possibly being compromised and I wanted to see if you guys had any insight as to whether this could be possible.
Answer from S1 Helmets: This sounds like it was a substantial hit and could land in the "High Impact Category" which means that that helmet is compromised in that exact location that the helmet was impacted. Other areas of the helmet should be fine but if you were to land in that same spot (or close to that same spot) the helmet would/could not provide enough protection. In summary, the helmet did its job (protected your head from a high impact) and now you should replace the helmet.
Your are probably wondering what is a High Impact and what is a a Low Impact?
Low Impact: If your slam was at 10 mph or less or from 4ft drop height or less - this impact would be considered a lower force impact. And the helmet can take 3 lower force impact in the same location before you should replace it.
High Impact: If your crash was more than 10mph or over 4ft - this impact would be consider a high impact and the helmet is most likely comprimised in that exact location of impact. (interesting to note: The helmet can take 4 high impacts to different locations of the helmet but can only take 1 high impact to the same location)
In summary - if you think you hit hard the safest thing to do is replace your helmet. If the helmet protects you 1 time from a slam it served its purpose. And I would like to take this moment to remind people that you should avoid hitting your head because no helmet can prevent all injuries and you could die or suffer permanent head injuries even while wearing a helmet. The brain is delicate and like the software and hardware of a computer can be easily damaged. Also - once you suffer your 1st concussion you are more at risk and susceptible for head injuries in the future. The S1 Lifer Helmet is constructed to pass/surpass the ASTM Multiple Impact Helmet Standard and the CPSC High Impact Helmet Standard.
2) Compression zones. If you can see where you the helmet hit and there a noticeable soft area that you can feel when pressing your fingers into it.
3) Cracks in the foam. If the foam has literally cracked straight through and is separating from the plastic outer shell the helmet will not absorb impact in that area and should be replaced.
Also - look for visible signs of wear or damage.
1) Stress fractures in the foam. If you see splintering fracture lines in the foam the helmet has been compromised.
What happens when the foam comes unglued from the shell? It's happened with a couple of derby girls I skate with, they haven't sustained falls or high impacts, but the glue has separated. (I know they are not safe, but does S1 have stats on this happening at all?)
ReplyDeleteusually that happens when people leave them in cars - they heat up and cool down - heat up and cool down which eventually loosens the glue. interestingly - they still pass impact tests when the glue has separated.
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