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Originally Posted by Baba  Oh man! Why is a bike helmet not good enough. Can anyone explain the logic behind it?  |
After getting a bike helmet for the british open from my friend whos a salesman, and having to take it back as it didnt have the right safety marks, he did some research for me. Its to do with the number of protective composite shells in the construction of the helmet. I cant remember which way round it is for bikes/cars having one or two shells but each is designed to cope with different impacts.
Bike helmets are designed to cope with one large primary impact. (ie. the helmet hitting a car that has driven into the bike) Car helmets are designed to cope with a smaller initial impact and then possible subsequent multiple impacts. (i.e. a helmet hitting off a roll cage or B pillar on initial impact followed by smaller hits during subsequent impacts such as when a car rolls.)