montroseloon
Well-Known Member
- Location
- Montrose, Scotland
Does anybody know if there is a recommended period of time to replace your cycle helmet? I know it is an odd question
And yet, none publish evidence to substantiate any such claim. All you can count on is the bog standard drop tests.Newer helmets with say MPS technology may be marginally safer, stronger, offer more protection.
I wonder if anybody actually routinely tests their helmets after the stated cutoff period (Quality of EN1078 testing notwithstanding). I rather suspect that the cutoff's there not because they have shown that the helmet degrades, rather that they haven't shown that it doesn't.And yet, none publish evidence to substantiate any such claim. All you can count on is the bog standard drop tests.
Plus it sells more helmets, so why would they test it?I wonder if anybody actually routinely tests their helmets after the stated cutoff period (Quality of EN1078 testing notwithstanding). I rather suspect that the cutoff's there not because they have shown that the helmet degrades, rather that they haven't shown that it doesn't.
They do put stickers with the date of manufacture in the helmets though, which could amount to the same thing.Plus it sells more helmets, so why would they test it?
Any figure in the form "X years" is clearly nonsense. Helmets don't age on the shelf - if they did, they could print a use by date on the compliance label and it would be simple. It's UV rays and sweat that might cause them to degrade. And it seems likely that a transcontinental racer would expose a helmet to more sweat and UV in 2 weeks than a London commuter might in 10 years.
Plus it sells more helmets, so why would they test it?
Any figure in the form "X years" is clearly nonsense. Helmets don't age on the shelf - if they did, they could print a use by date on the compliance label and it would be simple. It's UV rays and sweat that might cause them to degrade. And it seems likely that a transcontinental racer would expose a helmet to more sweat and UV in 2 weeks than a London commuter might in 10 years.
NopeThey do put stickers with the date of manufacture in the helmets though, which could amount to the same thing.
So about five years at a bit of a rough guess. I would think they're probably being rather conservative. Interestingly no mention of the effects of UV radiation, which makes me think that's probably a bit of a blue herring. Also interesting that they consider advancement in technology over five years to be a reason for replacement. I suspect that the manufacturers had some input into that bit.The Snell Foundation said:The five-year replacement recommendation is based on a consensus by both helmet manufacturers and the Snell Foundation. Glues, resins and other materials used in helmet production can affect liner materials. Hair oils, body fluids and cosmetics, as well as normal "wear and tear" all contribute to helmet degradation. Petroleum based products present in cleaners, paints, fuels and other commonly encountered materials may also degrade materials used in many helmets possibly degrading performance. Additionally, experience indicates there will be a noticeable improvement in the protective characteristic of helmets over a five-year period due to advances in materials, designs, production methods and the standards. Thus, the recommendation for five-year helmet replacement is a judgment call stemming from a prudent safety philosophy.