bah je sais pas
le site de Sharp a écrit : "We run 32 impact tests on a helmet model before awarding a SHARP rating.
Because the world doesn’t operate at one speed, SHARP doesn’t either. Each crash is unique with its own unique set of variables, so we test at a much wider range of impact speeds than standard regulations.
What’s more, SHARP analyses national and international crash studies – helping us to select the test points that are most representative of ‘real world’ crashes.
For every helmet model, we run 32 tests on seven helmets across a range of sizes – assessing how well each helmet could protect the brain in the event of a crash. To ensure the validity of our assessment, we only test helmets that we ourselves have purchased from retail outlets. It is important that the helmets we test are the same as those you would buy yourself.
We then go to work, testing each helmet by impacting them against anvils to represent flat surfaces and kerbs. SHARP tests are carried out at three different speeds to ensure the helmet provides good protection during both high and low severity impacts. Despite the risk of injury being much lower during less severe crashes, even a small risk could result in riders being seriously or fatally injured."
donc 32 impacts à 3 vitesses différentes répartis sur 7 casques de tailles différentes, achetés dans le commerce au hasard
mais ça me dit pas d'où qu'elle est pas pareille à droite qu'à gauche ma gamelle