What's Inside the Best Motorcycle Helmets of 2021?

hey the quietest safest lightest cheapest helmets as in any gear breakdown we just need our donut and our angle grinder [Music] so the shell's job is the same as the youth pastors prevent penetration but also spread force across more of the foam absorbing more impact up till the failure point at which plastic helmets crack resulting in a shittier spread of the natural nut butter while this fiberglass and carbon or eye can be pushed to the crackling point huh better spread yet shoei's rf 1400 improves on all of them it's their most elastic shell let's simplify our helmet as a hollow sphere because a benevolent physicist always leaves the finicky work for engineers so long past the failing displacement of plastic or fiber since this is elastic we still get a perfectly flat surface at the point of impact maximal flawless dispersion and like the man with two penises says you've only seen the half of it what we just witnessed was the strain of impact being translated into perpendicular elastic strain and to scientists this relationship is known as the poisson ratio but to motorcyclists it means that an elastic shell can be tuned to divert crash force by itself and the rf-1400 eats impact even before it starts dispersing across the foam which elastic shells happen to do flawlessly as we know safest showy ever but tokyo we have a problem see in huge crashes with huge displacement a hollow elastic sphere will undergo geometric buckling phases and that is obviously bad for your head the trick to preventing buckling is to avoid discontinuities which is why this is showy's most continuous shell all hand woven hand chosen fiber so even at the bends and spoilers thickness stays exactly the same if isaac newton needed a helmet and he did he'd choose this elasticity is huge for sound cancellation too see designing the quietest helmet in the world is easy there i've done it but my creation has a truly fatal flaw in that you must cut your head off to use it it's these darn neck holes and that's how the noise sneaks in shoei's elastic shell lets them get away with an unusually tight entry which must be stretched open even then my ears are being sheared but once sealed inside it's as quiet as it is safe wow next layer is the slip plane mips lets the padding move independently of the foam and shell meaning your head can rotate up to 15 millimeters inside the helmet so whatever whiplash happens out here doesn't all go to your brain [Music] does that really help well a lid with mips does allow less rotational acceleration than an identical lid without scale that sample over 100 helmets then slap my ass and call me susan a 30 reduction in strain is mean this is the single cheapest thing a manufacturer can do to keep you alive it amounts to a scrap of plastic and a licensing fee take this z1r range or is it a joe rocket rkt 25 or a 509 delta r3 whatever it's a generic product 150 bucks ready as a russian bride to take anyone's name but because z1r went and got mips theirs is the legitimately good choice now pads are the most overlooked safety layer there is zero point in getting the rest right if these fit worse than ja rules jeans i guess not it's a bigger problem than we realize because all pads loosen over time so do i buy an uncomfortably tight helmet now then have it fit safely in a year then loosely and two then hope i can still buy replacements in three that sucks only scorpion was pissed enough to engineer a solution you pump it up snug for each ride making year three as safe as year one this also lets me add a couple pumps on track pads are like puckering there's a certain tightness that is uncomfortable at 100 but oddly comforting at 200. scorpion lets me find the difference apropos for this exo-r1 air which is the helmet carterraro races in moto gp well technically fabio has a small head so only that size was sent to fm's lab for homologation but his nearest makes no difference yes this is an fim helmet that you and i can afford so what well dot allows up to 400 g's to your dome meaning you might not die and that's good enough for them snell is still banging their heads against a guided double drop 7.75 meters per second less than 275 g's on both impacts the trouble is almost no one crashes like a pogo stick so mostly this standard just requires overly rigid helmets that cause concussions and ordinary tumbles ece knows this so they do a single unguided free fall meaning translational impact requirements are a bit softer but that lets them ask for rotational protection less than 10.4 kilo rad per second squared peak angular acceleration better than 0.78 on the brick test make no mistake and these are two different ideas of safety a helmet may pass ece or snell but not often both current research suggests ece has it right snell at least writer than d-o-t but f-i-m f-i-m slays them all their translational impact thresholds approach snell their rotational impact thresholds trump ece and there's almost no money in a standard like this because almost no helmets pass it but why should fim give a they make millions on motogp and their only concern is protecting those assets in the few safest helmets in the world it takes a company like scorpion dartling of the frugal bastards to bring an fm helmet to market for six hundred dollars that they throw a tinted visor and pin lock in the box that's just bragging our last layer is do you see it empty space hjc's f70 does that best it has an expansive field of view such that the orb becomes a greenhouse without vampiric levels of sunshade but on a cool day with the visor open you'd swear you were wearing nothing at all only the weight ruined yesteryear's illusion and fiberglass was a 1620 gram reminder of the helmet's presence so for 2021 hjc offers it in carbon saving 240 grams of the equivalent of a european ground squirrel sitting on your head with feather weight a picture window and streamed lines the f-70 carbon invokes rolls-royce's three maxims of luxury light space and quietness i'm fortunate to test a new helmet for each new day and i curse that job because if i had the choice i'd always take the rolls it's the second cheapest too after our z1r range mips slip plane safety on a budget then our scorpion exo r1 air puffable padding and an fim rating then our shoei rf 1400 whose shell is a stroke of elastic genius now we know what goes into the best helmets of 2021 [Music] you

Channel: FortNine

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Length: 9min 56sec (596 seconds)

Published: Sat May 22 2021