There is a video online circulating showing a old school soft foam helmet (Flyaway) performing well on a 2.5 foot drop. On the video the soft foam helmet performed better than an S1 Lifer Helmet. And the soft foam helmet company made a big deal about how much better their helmet was than an S1 Lifer Helmet. My first question after watching the video was “Why did they choose a 2.5 foot drop height? It is such a low drop height! The ASTM standard for skate is 3.87 feet and the current helmet safety standard for skate and bike helmets is 6.5 feet. Why did the choose a 2.5 foot drop height? I suspected they tested their helmet at higher drop heights and it didn’t perform well so they only released the results from a 2.5 foot test. This highly suspect video prompted me to go purchase 2 of the branded soft foam helmets and test them at a 2.5’ height, the 3.87’ (astm test) height and at 7 foot height (cpsc test). And we also tested the S1 Lifer Helmet at these heights.
The soft rubbery foam disperses energy ok at a low height of 2.5' feet but after 2.5' the soft rubbery foam does not disperse energy adaquately and too much energy enters the head form resulting in a high spike of G.s
Summary:
Flyaway / 2.5 ft drop height / Front / Peak G’s: 86 G (raw test footage video 5)
Flyaway / 2.5 ft drop height / Back / Peak G’s: 148 G (raw test footage video 1)
Flyaway / 3.87 ft drop height / Front / Peak G’s: 380 G’s (raw test footage video 9)
Flyaway / 3.87 ft drop height / Side / Peak G’s: 841 G’s (raw test footage video 11)
Flyway / 7 ft drop height / Front / Peak G’s: 909 G’s (raw test footage video 7)
Flyaway / 7 ft drop height / Back / Peak G’s: 963 G’s (raw test footage video 3)
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S1 Lifer Helmet / 2.5 ft drop height / Front / Peak G’s: 107 Gs (raw test video 6)
S1 Lifer Helmet / 2.5 ft drop height / Back / Peak G’s: 102 G’s (raw test video 2)
S1 Lifer Helmet / 3.87 ft drop height / Front / Peak G’s: 168 G’s (raw test video 10)
S1 Lifer Helmet / 3.87 ft drop height / Side / Peak G’s: 175 G’s (raw test video 12)
S1 Lifer Helmet / 7 ft drop height / Front / Peak G’s: 164 G’s (raw test video 8)
S1 Lifer Helmet / 7 ft drop height / Back / Peak G’s: 176 G’s (raw test video 4)