ARAI helmet and SHOEI. Choose a helmet is quite simple: it is necessary to exclude Chinese crafts for $ 25 (at the first blow, they can fly into small pieces) and … look for the letter "E" in a circle on the strap. The newspapers mentioned Amazon not as a source, but as a related topic. But being born and tested as helmets, which must ensure the safety of our heads? Hard and soft is already 40 years as a helmet is compulsory by law in many countries, but often the decisive factor in the choice is not as much protection as the original type or coloring. However, in the first place when choosing a helmet should pay attention to his ability as much as possible to absorb impact energy so as not getting any head. And for that helmet must be properly deformed and even partially destroyed during the impact. Impact energy, which does not reach the head, in fact destroys the helmet. In this one powerful blow aimed at his helmet split a few scattered and weaker.
So, we decided to find out how Helmets are designed and manufactured to assist you in proper evaluation of the selection and purchase. Helmet consists of two shells made of different materials and perform different functions. The combined process production, they must distribute the impact energy for maximum space and time to absorb it. The outer casing of the helmet – hard shell, made of different materials (thermoplastics and composites). Of most commonly used thermoplastic ABS (cheap, flexible, but requires a little greater than the thickness of the material) or polycarbonate (the more expensive, durable, allowing thinner material), or various blends with intermediate characteristics.