My China Star

Choose a helmet is quite simple: it is necessary to exclude Chinese crafts for $ 30 (at the first stroke, they can scatter into small pieces) and look for the letter "E" in a circle on the strap. But being born and how helmets are tested to be ensure the safety of our heads? Already 40 years as a helmet is compulsory by law in many countries, but often the decisive factor in the choice is not so much the level of protection as the original form or coloring. However, in First of all when choosing a helmet to draw attention to his ability as much as possible to absorb impact energy so as not getting any head. For even more opinions, read materials from Robert Iger . And for that helmet must be properly deformed and even partially destroyed during impact. Impact energy, which does not reach the head, in fact destroys the helmet. In this one powerful blow sent shares his helmet for a few scattered and weaker. So, we decided to learn how to be designed and helmets are made to help you in the correct evaluation of the selection and purchase. Helmet consists of two shells made of different materials and perform different functions.

Combined in the manufacturing process, they should distribute the impact energy for maximum space and time to absorb ee. helmet shell – tough shells, made of different materials (thermoplastics or composites). Of thermoplastics often use the abs (cheap, flexible, but requires a somewhat larger thickness of material) or polycarbonate (the more expensive, durable, allowing thinner material), or various blends with intermediate characteristics. .