The Best Helmet for Skateboarding, Longboarding, BMX and Roller Derby скачать в хорошем качестве

The Best Helmet for Skateboarding, Longboarding, BMX and Roller Derby

The S1 Lifer Helmet is a true multi-impact helmet. Alot of helmets are marketed as "Multiple Impact". We took a Soft Foam helmet (EVA foamed wrapped with Terry Cloth), a Hockey Helmet (with triple density eva foam) and an S1 Lifer Helmet (EPS Fusion Foam) and put them to the Multiple Impact test. What are parameters of the Multiple Impact Test (ASTM F 1492) ? The helmet is dropped to achieve an impact velocity of 4.57 meters per second. This is equivalent to a 10 MPH impact or a 4 ft. drop height. The same helmet is tested 3x in the same location. The helmet must reduce the peak acceleration of the impact to under 300 G's on all 3 impacts. Why 300 G's? Your brain does not like G's. Anything over 300 G's is very bad for the brain and will cause a severe concussion and/or Traumatic Brain Injury or even death. A helmet's job is to reduce the amount of G's that hit the brain. Test Results: SOFT FOAM HELMET (FAIL) 1st Impact: 852 Peak G's HOCKEY HELMET (FAIL) 1st Impact: 248 Peak G's 2nd Impact: 339 Peak G's 3rd Impact: 381 Peak G's S1 LIFER HELMET (PASS) 1st Impact: 170Peak G's 2nd Impact: 219 Peak G's 3rd Impact: 249 Peak G's The S1 Lifer Helmet is a better, safer helmet. The S1 Lifer Helmet is a true multiple impact helmet. www.s1helmets.com www.facebook.com/s1helmets