Z
Zebee Johnstone
Guest
In aus.bicycle on Wed, 04 Jan 2006 17:06:40 +1100
Random Data <[email protected]> wrote:
> On Wed, 04 Jan 2006 01:30:03 +0000, Zebee Johnstone wrote:
>
>> Just to make life more difficult... The bod in charge of testing
>> motorcycle helmets for Oz compliance recently tested a bunch of old
>> helmets - some worn a lot, some not much, the oldest 12 years old.
>
> Moto helmets are very different from push bike helmets, and I suspect
> exceed the design requirements by a fair bit. Out of interest, was there a
> noticeable difference between new and old, or were the models sufficiently
> different that this wouldn't mean anything?
>
I don't know for sure, but he didn't say so. THe impression I got was
they all passed the tests, and it's not that easy to get a handle on
how much any helmet has left in it once it's passed.
Motorcycle helmets certainly are butcher than pushbike ones Also,
I suspect they resist UV better as the polystyrene is not exposed as
it often is on the smaller more open pushbike lids.
But the method of protection is the same - they both work by having
the polystyrene compressed so as to both cushion and spread the load.
That a 12yo helmet could pass the test makes me think this "must
replace in 3/5 years" idea is either marketing or **** covering.
Zebee
Random Data <[email protected]> wrote:
> On Wed, 04 Jan 2006 01:30:03 +0000, Zebee Johnstone wrote:
>
>> Just to make life more difficult... The bod in charge of testing
>> motorcycle helmets for Oz compliance recently tested a bunch of old
>> helmets - some worn a lot, some not much, the oldest 12 years old.
>
> Moto helmets are very different from push bike helmets, and I suspect
> exceed the design requirements by a fair bit. Out of interest, was there a
> noticeable difference between new and old, or were the models sufficiently
> different that this wouldn't mean anything?
>
I don't know for sure, but he didn't say so. THe impression I got was
they all passed the tests, and it's not that easy to get a handle on
how much any helmet has left in it once it's passed.
Motorcycle helmets certainly are butcher than pushbike ones Also,
I suspect they resist UV better as the polystyrene is not exposed as
it often is on the smaller more open pushbike lids.
But the method of protection is the same - they both work by having
the polystyrene compressed so as to both cushion and spread the load.
That a 12yo helmet could pass the test makes me think this "must
replace in 3/5 years" idea is either marketing or **** covering.
Zebee