The full helmet protects the entire head, and the half helmet chin and the back of the head are not protected. Motorcycle manufacturers will explain the protection of the helmet!
The motorcycle helmet is a head protection device for motorcycle riders. The main purpose of the helmet is to protect the knight's head from shocks, to prevent or mitigate injuries and even to save the knight's life.
Motorcycle helmets can be divided into: full-face helmet, with perfect full head protection, but lack of ventilation, more sulking; cross-country helmets, common motocross, usually without goggles; 3/4 helmet, similar to the chin Full-helmet without protection; half-helmet, neglecting the protection of the chin and the back of the brain, disabled in some countries and regions; assembling the helmet, can completely turn the chin device up, from the full helmet to the 3/4 helmet.
Motorcycle helmet is a head restraint for motorcyclists. The main purpose of the helmet is to protect the knight's head from shocks, to prevent or mitigate injuries and even to save the knight's life. The car is faster and more dangerous than a regular motorcycle. Therefore, the racing helmet is more demanding, stronger, more complex in mechanical structure, more resistant to impact, and has full goggles. The current racing helmet - mandatory carbon fiber material compared to conventional fiberglass Increased impact protection by 50%. At the same time, the weight is reduced by 20%. Its quality should be as light as possible so that the rider does not wear it. After the helmet is baked for 30 seconds in a high temperature flame at 800 degrees Celsius, the internal temperature does not exceed 70 degrees Celsius. When the car burns, it does not put the driver's head in extreme heat. The design of the racing helmet also takes into account the breathing and heat dissipation of the rider, so there are venting holes in different positions. In order to prevent foreign matter from entering the inside of the helmet, a filter is installed in the vent hole. In short - the various requirements between the two, manufacturing costs, etc. are very different.