Περί ελέγχου κράνους..

http://www.bhsi.org/replace.htm

Περί κράνους γενικά..

http://docs.google.com/viewer?a=v&q=...7gQBp-VQ&pli=1

Και όσον αφορά το δίλημα...

Maintaining a Helmet
To ensure your helmet needs replacement only after its maximum lifespan, take care in maintaining it. Never drop a helmet and, if you accidentally do, make sure to inspect it completely for signs of spiderweb cracks and chips. Helmets can usually be brought to a manufacturer for inspection and, sometimes, repair. Take advantage of this service if possible. In addition, make sure to keep the interior of the helmet clean. Sweat and heat from your head will begin to break down the interior lining and foam and make the helmet loose on your head, so cleaning it after each use is recommended.


Read more: How Often Should One Replace a Motorcycle Helmet? | eHow.com http://www.ehow.com/way_5158426_shou...#ixzz1BN0tX09q