Helmet outer casing has degraded in only 3 years
Helmet outer casing has degraded in only 3 years
Out of all the plastics in the worlds that are near impossible to degrade, this manufacturer has found one that starts to disintegrate after about 3 years, its turning a yellowy shade and has become stupidly brittle. What an utter waste!
Re: Great Helmet Design
Seems to have happened more on one side. Do you leave it by a sunny window?
The older I get the more I’m inclined to act my shoe size, not my age.
Re: Great Helmet Design
peetee wrote:Seems to have happened more on one side. Do you leave it by a sunny window?
opposite of POSH, I ride North in the mornings, shelter in the mid day sun and return in the evenings
seriously though that seems to be a camera affect it all has a yellowish tinge
Re: Great Helmet Design
Given that the advice is to change helmets due to degradation every 3 years maybe its intentional to get you to follow the advice - inbuilt safety obsolescance?
Have to say, its the first time i've seen that without there having been an impact incident.
Have to say, its the first time i've seen that without there having been an impact incident.
Convention? what's that then?
Airnimal Chameleon touring, Orbit Pro hack, Orbit Photon audax, Focus Mares AX tour, Peugeot Carbon sportive, Owen Blower vintage race - all running Tulio's finest!
Airnimal Chameleon touring, Orbit Pro hack, Orbit Photon audax, Focus Mares AX tour, Peugeot Carbon sportive, Owen Blower vintage race - all running Tulio's finest!
-
- Posts: 7898
- Joined: 7 Mar 2009, 3:31pm
Re: Great Helmet Design
One wonders how strong this helmet was before the decay was apparent.
Do any of the various helmet standards have any stipulations on longevity?
Do any of the various helmet standards have any stipulations on longevity?
It's the same the whole world over
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
Re: Great Helmet Design
I can't imagine that very thin plastic layer having any function other than decorative to be honest. Is it supposed to be part of the structural integrity? may be it just stop the sun degrading the polystyrene bit?
Re: Great Helmet Design
My 10 quid Aldi job is still perfect after 6 years. Never been bashed
Al
Al
Reuse, recycle, thus do your bit to save the planet.... Get stuff at auctions, Dump, Charity Shops, Facebook Marketplace, Ebay, Car Boots. Choose an Old House, and a Banger ..... And cycle as often as you can......
Re: Great Helmet Design
Agreed. If people remember the early helmets from the late 70s to mid 80s, the vast majority were simple polystyrene shells and you used a sort of elastic mesh decorative outer sleeve with it. Manufacturers were perfectly candid and owned up that the purpose of this was to hold the polystyrene in place as it collapsed/disintegrated in event of an impact.Pebble wrote:I can't imagine that very thin plastic layer having any function other than decorative to be honest. Is it supposed to be part of the structural integrity? may be it just stop the sun degrading the polystyrene bit?
Re: Great Helmet Design
al_yrpal wrote:My 10 quid Aldi job is still perfect after 6 years.
How do you know? Might shatter on first impact and I bet it's no longer under even limited guarantee.
I don't understand the mentality of helmet users who ignore the instructions. Worse than not using.
MJR, mostly pedalling 3-speed roadsters. KL+West Norfolk BUG incl social easy rides http://www.klwnbug.co.uk
All the above is CC-By-SA and no other implied copyright license to Cycle magazine.
All the above is CC-By-SA and no other implied copyright license to Cycle magazine.
-
- Posts: 7898
- Joined: 7 Mar 2009, 3:31pm
Re: Great Helmet Design
Pebble wrote:I can't imagine that very thin plastic layer having any function other than decorative to be honest. Is it supposed to be part of the structural integrity? may be it just stop the sun degrading the polystyrene bit?
All plastics suffer UV degradation, don't they? If the protection for the foam has gone it cannot be good.
It's the same the whole world over
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
-
- Posts: 11041
- Joined: 7 Jul 2014, 9:45pm
- Location: Near Bicester Oxon
Re: Great Helmet Design
Mike Sales wrote:Pebble wrote:I can't imagine that very thin plastic layer having any function other than decorative to be honest. Is it supposed to be part of the structural integrity? may be it just stop the sun degrading the polystyrene bit?
All plastics suffer UV degradation, don't they? If the protection for the foam has gone it cannot be good.
I think Pebble's right - on mine it's not even attached to the foam layer except by some kind of tape around the perimeter (and this one looks similar), so it's adding nothing, structurally that I can see.
(Or have I misunderstood - do you mean that the foam will now be unshielded, and may now degrade itself?)
-
- Posts: 7898
- Joined: 7 Mar 2009, 3:31pm
Re: Great Helmet Design
Bonefishblues wrote:
(Or have I misunderstood - do you mean that the foam will now be unshielded, and may now degrade itself?)
That is what I meant.
It's the same the whole world over
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
It's the poor what gets the blame
It's the rich what gets the pleasure
Isn't it a blooming shame?
Re: Great Helmet Design
mjr wrote:al_yrpal wrote:My 10 quid Aldi job is still perfect after 6 years.
How do you know? Might shatter on first impact and I bet it's no longer under even limited guarantee.
I don't understand the mentality of helmet users who ignore the instructions. Worse than not using.
are they only deigned and tested up to 14mph or something ?
if so then they are already not much use at the speeds I'm glad to be wearing a helmet at.
Re: Great Helmet Design
Pebble wrote:mjr wrote:I don't understand the mentality of helmet users who ignore the instructions. Worse than not using.
are they only deigned and tested up to 14mph or something ?
if so then they are already not much use at the speeds I'm glad to be wearing a helmet at.
I thought it was 12mph, but something like that.
I don't see why you're glad using one at higher speeds: helmets are primarily for low-speed falls onto the top of your head. If it's making you feel more confident cycling at higher speeds, then you are probably experiencing risk compensation and increasing the danger to the rest of your body if not also your head.
MJR, mostly pedalling 3-speed roadsters. KL+West Norfolk BUG incl social easy rides http://www.klwnbug.co.uk
All the above is CC-By-SA and no other implied copyright license to Cycle magazine.
All the above is CC-By-SA and no other implied copyright license to Cycle magazine.
Re: Great Helmet Design
foxyrider wrote:.. its the first time i've seen that without there having been an impact incident.
there clearly have been multiple impacts; the dents in the polystyrene are witness to that.
FWIW the OP's helmet is ready for the bin; the usual idea is that the microshell holds the (broken) pieces of polystyrene together for long enough to do some good in the event of multiple impacts. Once the microshell is brittle it won't do that any more.
Some helmets have an internal web moulded into the polystyrene which does the same job (and better) but you can't see that there is one or not until the helmet is properly broken.
cheers
-------------------------------------------------------------------------------
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~