Re: [RBW] When to Replace a Helmet?

[Brian Turner]

I’ve often wondered about this, especially every time I drop my helmet… which 
happens A LOT. So many little dents and scuff because of simply dropping it 
from 3-4 ft. Somehow, I doubt it’s compromised its safety.

- Brian

> On Jun 15, 2023, at 2:25 PM, Matthew Williams 
>  wrote:
> 
> Back in October, I was turning onto a path via a curb cut, but I was going 
> too fast and my front wheel slid out from under me. I scraped my hand and 
> chin, and my knee was bruised and swollen. As I landed on my shoulder, my 
> head flopped to the side and gently *tapped* the concrete. 
> 
> If I hadn’t been wearing a helmet, my head would not have touched the ground. 
> The force with which my head and helmet touched the ground felt equivalent to 
> bumping your head on a desk as you bend down to pick up a pencil: you’re 
> surprised, but not hurt. I didn’t lose consciousness or have neck pain, and 
> my helmet has no visible scratches or scuffs.
> 
> I’ve heard and read helmets should be replaced after a crash--but what’s the 
> degree of severity? Are there any rules-of-thumb e.g. if the helmet was 
> scuffed from the impact, get a new helmet? The force with which my head 
> touched the ground didn’t feel hard or severe, but is that because the helmet 
> absorbed the impact? Do I need a new helmet?
> 
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[RBW] When to Replace a Helmet?

[Matthew Williams]

Back in October, I was turning onto a path via a curb cut, but I was going too 
fast and my front wheel slid out from under me. I scraped my hand and chin, and 
my knee was bruised and swollen. As I landed on my shoulder, my head flopped to 
the side and gently *tapped* the concrete. 

If I hadn’t been wearing a helmet, my head would not have touched the ground. 
The force with which my head and helmet touched the ground felt equivalent to 
bumping your head on a desk as you bend down to pick up a pencil: you’re 
surprised, but not hurt. I didn’t lose consciousness or have neck pain, and my 
helmet has no visible scratches or scuffs.

I’ve heard and read helmets should be replaced after a crash--but what’s the 
degree of severity? Are there any rules-of-thumb e.g. if the helmet was scuffed 
from the impact, get a new helmet? The force with which my head touched the 
ground didn’t feel hard or severe, but is that because the helmet absorbed the 
impact? Do I need a new helmet?

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