This is an often asked question here at the store and it may differ due to your circumstances. Now first of all let’s look at how your helmet is constructed and why this plays a part in when to replace it. In basic terms we first have the hard outer shell most commonly made of polycarbonate or maybe even fibreglass or carbon fibre. The next layer in is a foam called the expanded polystyrene layer that lines the helmet. This layer is similar to the foam that makes up a surfboard and absorbs the bulk of an impact.Then we have the comfort foam liner that gives the helmet the ability to conform to the shape of your head. Often this is replaceable if it the helmet becomes loose or if it gets a bit smelly over time.Finally we have the glues, resins, standards decal, visors, chin strap, buckles and other materials used in the making of the helmet.
OK so why would this all need replacing?
As we ride, we sweat, and this moisture is absorbed by the expanded polystyrene layer. Remember this is the layer that’s key to absorbing an impact. As the this layer dries out, it shrinks a little, and as it shrinks it hardens, making it slightly less effective at absorbing the energy of an impact. Now, I’d suggest that at a regular scooter commuter does an average ride of around 10,000 kms a year. During that time the polystyrene will shrink between three and five percent annually. And so there comes a point where it has shrunk so much that it is no longer sufficiently effective at absorbing energy. The thinking is that most helmets will reach this position after five years, which also is the time most (if not all) helmet manufacturers recommend replacing your helmet. On top of that, if you ride every day, sweating in your helmet, having greasy hair or using a lot of “hair product” can all aid in compacting the foam and making the the next layer of interior liner degenerate faster than normal use, in which case you would replace sooner. You can prolong the life of your helmet interior by wearing a helmet liner, such as a Corazzo Bandana that assists in keeping sweat and hair products off the foams.
What happens if I drop my helmet?
This is a tricky one, as the simple answer is replace it to be sure. I know I’ve dropped my helmet from knee height and after a close inspection continued to use it. Any higher than that height I’d suggest to replace it as you just don’t know if the polystyrene layer is still securely glued to the outer shell, or even if it has become deformed. As for general bumps, you’ll find the outer shell is quite hardy and will be ok with day to day handling, but keep it away from petroleum-based products such as fuel, harsh solvent style cleaners and paint. I find a handy product we have in the store is Motul Helmet and Visor Cleaner. A bottle seems to last ages, keeps your helmet looking its best and its doesn’t harm your helmet in any way.
Other stuff to consider!
If your visor is scuffed it is very affordable to replace it ( check out this link $39.95 and up ). If you don’t see your helmets visor listed here contact our spare parts and accessories team on 02 99385858 option 3 or parts@scootercentral.com.au .You’ll be surprised at the difference between a 3 year old visor and a new one. We’ve all done it, but it’s not a great idea to put your helmet on your mirror as the interior foams can deform ( and if your unlucky it could fall off and take a fall )
So In conclusion
It’s not the outside shell that deteriorates, but the inside foam and fabric lining. If you notice the helmet getting loose or some of the lining coming out or it leaves little foam flakes in your hair, then it’s time to retire it, whether it has reached the five years or not. I’d also suggest storing your helmet in a dry cool place out of direct sunlight. If your helmet becomes unacceptably loose (or unacceptable smelly) you can often clean or replace your interior padding, or if the helmet is close to 5 years old, replace it. If your helmet becomes quite loose, takes a good fall, is in an accident, has the interior or exterior deteriorate, or has a frayed strap or failed buckle – it’s time to replace it.
One last thought is to technology. I find it handy to replace my helmet every five years and not only for the peace of mind it gives me, but also because it keeps me up to date with the latest technology that goes into making a modern helmet. Over the last few years we’ve seen advances in buckle technology, visors treatments and low sun visors and breathability, so I always seem to benefit for the change.
I hope this is helpful. Feel free to call, email or visit us for more advice on styles. fitting and more and check out our range of helmets on our website HERE