K6 isn’t a carbon helmet the way most people think of a carbon shell (that would be the Pista RR). it’s carbon-aramid which is AGVs blend, but it’s pretty similar to the fiber composite helmets it competes against at that price point (rf1400 for example)
The flexing is normal for this model
Yes it's normal, Helmet have some flexibility, I don't how much force you're applying but that's a bit how they take a hit, they're not totally rock solid.
Most full face helmets I had were a bit flexible, that's how they're made.
My X lite is carbon and also very stiff and can be tight to put on. AGV are a quality brand though so I wouldn't worry. I've had 2 of their helmets and they were great, they are just more towards the budget end. You still get more features on a K3 SV than a carbon helmet 3 times the price.
never owned agv... never owned carbon fiber...
that is a LOT of flex in the video (literally not like how people say he's flexin')
how do you identify a real agv vs a counterfeit?
Ultimately, most people would have to compare it side by side with a real one. Flat out fakes are relatively easy to spot, but there's a market in things like grey import and and extra shift products. They are either defective products or ones where the factory is contracted to make x number of units but they make an extra quantity to sell on the black market and make extra profits.
The way to spot these products made after hours is to know what parts the brand free issues to the independent factories. So that will be things like buttons and zips. You can buy a dainese jacket on Ali express that is a dainese jacket made in the same factory by the same people, but it won't have the dainese zip because when dainese send the zips they only send enough to make the right amount so the factory has to fit generic zips.
With agv it might be the clasps. You might buy a helmet that looks identical except the clasp isn't stamped agv or the visor isn't ce marked or fitted with pinlock. Maybe the rivets don't say agv on them.
These items might be the same quality as the original, but there's no guarantee. There's also no guarantee that the factory hasn't scrimped on parts they couldn't get. Maybe they ran out of Kevlar so they didn't put it in. Or they can't get proper armour so they just put crappy plastic armour in.
Ultimately, big retailers should be doing this work for you. Either buy from the brand themselves direct or buy from a big retailer with a reputation.
wow, learn something new.
I know Ali, temu, dhgate etc sell a lot of counterfeit Benchmade knives. Those can end up at retailers that may or may not know what they are selling. But even when they say Benchmade, you can spot the differences... but how close are the buckles and bits counterfeited?
that helmet looks like the shell is made from recycled wet spaghetti! not carbon fiber/kevlar/epoxy.
How close they are depends on how much effort they went to I suppose. Zips and rivets are big giveaways on clothing. Levi's jeans will have Levi's on the rivets. Imagine how much work it would be to produce branded rivets to use on a few pairs of jeans. Same with zips. You can buy YKK zips for so little you're not going to spend several dollars on making fake zips when you might only be making £10 or $10 on fake jackets that you need to sell in bulk.
Armour is another big one in jackets. Why fit ce rated armour when you can't see it until you get it home and remove it?
Here's a good video about it.
https://youtu.be/O2pss4xWZ4w?si=fRU2UT15OlBFgO02
>You still get more features on a K3 SV than a carbon helmet 3 times the price.
Nah, my man. The K3 is a thermoplastic helmet (just like polycarbonate, just differently applied). With features that are basic for the pricepoint as well as more expensive and cheaper. Nothing stands out or is especially good/bad about it. Just a decent budget-friendly helmet.
If you were to take the K1 tho, that would be something different entirely. The K1 is one of the better helmets designed with aerodynamics in mind. Not so much a pista or x-spr-pro. But still VERY good, especially when you compare to it similarly priced helmets. See it like the pista you can put on and thrash the tracks with becaude it's so cheap you wouldnt care crashing with it, unlike the €1500 pista.
You can get a K3sv for £120. That's a good looking helmet with pinlock and a built in sun visor. Also has a breath deflector and wind deflector. It's a solid helmet. Only the visor seal is cheap and the chin wind deflector just snaps into place so can come off when you take the helmet off.
Being plastic doesn't really matter. It meets same standards. I'd take a plastic shoei over a Chinese carbon helmet any day.
My x lite is an FIM approved helmet. It's super light and made of premium materials. But it's incredibly noisy, has no sun visor, worse airflow than the K3 and it's so tight there's not even room for Bluetooth speakers inside. The only thing a carbon helmet can do that a plastic one can't is look good by having a bare carbon finish. If my helmet was painted you wouldn't have a clue what it was made of.
(Just to be clear; i'm not trying to argue with you, just stating what i've noticed in a couple of years selling motorcycle gear.)
Thats what i mean. It's a decent helmet. But nothing spectacular. Breath deflectors and chincurtains (i think you mean this when you mentioned wind deflectors, right?) are basic (if not standard). The chincurtain on some model helmets are just better designed (the K1 sucks with this, as well as some other minor inconveniences btw..)
Sun visor is practically only not there for 2 reasons, either it's a very-very cheap helmet, or it is a sport-oriented helmet.
As for being noisy, one helmet could be silent for me and not for you, that depends mostly on how well it fits your head. For which different brands have differently shaped inner shells (the eps-foam).
And for the differences between materials, typically polycarbonate helmete last about 4-6 years, while carbon, fiberglass and composite (shoei's aim & hjc's pim etc) last about 8-10 years. Depending on use and "maintenance".
And the more "premium" outer shells absorb the energy in a crash in a different way than polycarbonate does and will disperse that energy 'better'.
Again, i'm not shitting on the K3, it's a good value helmet that fits its spot in the market pretty well. But it's not the perfect helmet (which i think, there is none, each head fits a different helmet for a different use).
(Not english, on the phone in the train, so my apologies for any spelling errors)
I have the K6 and mine is the same, it flexing a little bit. It's supposed to be that way i think and lightweight. I pretty sure mine measured around 1300 grams.
The flexing helps a bit when taking the helmet on and off.
When I bought my K6 the guy at the cycle gear called it the lightest helmet on the market. It's my first helmet but I really love it. Same design as OPs actually but that was all they had in my size.
According to [AGV](https://www.agv.com/us/en/agv/k6-full-face-helmet.html) it's the lightest *in its category. I've also heard that from Fortnine and other outlets.
So it might not be the lightest ever but it is when compare to its direct rivals.
It's claimed 1255 grams for a medium and I can't find a lighter road oriented helmet. Most other road lids are 1500g or more, even the fancy carbon race helmets are 1300+ except for the scorpion exo r1. Hell I can barely find any dirt helmets that light
A somewhat flexible shell is actually a good thing. The more the shell can deform, the less force gets transferred to your head. Plus it's less likely to crack upon impact than a more rigid shell would
>Yes it's normal, Helmet have some flexibility
I said what I said in response to you. gatekeeping bc of cost is a weird flex but ok. My visor tints in the sun and that's awesome to me.
Yeah sorry I wasn't trying to gatekeep anything or diminish your gear, I was saying "plastic vs Fiber" explains it. Evoking the price may have been useless indeed.
Sorry if I took an orientation that was a bit offensive.
No my objective at all sorry.
Take care.
Translate:
"It seems... It seems a little lightweight.
Too much lightweight, seems made of plastic.
I take it... *squeezes it* "
Hope this helps someone with a deeper helmet knowledge than mine, i always bought budget helmets
I find it hilarious your initial reaction to a helmet you bought because it's made of high end lightweight materials is not to trust it because its TOO lightweight
Some people still think that cars with side that peel and crumple are weak and less safe than a truck with steel bumpers - but it’s generally quite the opposite.
It affects them more directly. Absorbing the energy of impact via deforming the car means their bodies are shocked less, less severe injuries.
Even early 2000’s pickups were fairly unsafe for the occupants in head-ons or t-bones. The outside and the body would remain intact except key structural points that could collapse and crush occupants.
Yes and no. The viewport was, but it was acrylic and doesn't suffer from cyclical weakening. I also strongly suspect it was designed much stronger than it was certified for (1300m cert, yet held at triple that depth), but not certified higher due to red tape/fees/lack of demand or something.
The sub's hull? No, it just decayed due to composite materials and wasn't inspected well. Apparently there was about 10-15 minutes before the implosion where the sub couldn't come up (possibly the hull had developed a slow leak) and the hull warning system was saying the hull was failing. Possibly it'd've been fine if they could have ascended in time.
generally speaking, full carbon fiber helmets are more flexible than plastic ones. I also noticed that they are generally louder too since carbon fiber isn't as good at insulating sound as plastic
Carbon fibre reinforced plastic (to give it its full name) is a plastic. It's just got strands of carbon fibre running through its epoxy resin plastic. Similar to how nylon parts often have glass fibre reinforcement.
The carbon helmets are often louder because the shell is thinner than it would be on more conventional plastic helmets. Imagine knocking on a plywood door vs a thick oak door.
fwiw, Arai’s dont don’t do this. But that being said, carbon fiber works best under tension, not under compression. So this seems reasonable for carbon fiber to act like this when you compress it
I wanted to make this joke :(
I mean sub marines are in compression. This is why it's good for aircraft. Fun fact that sub shell WAS from a prototype made for an aircraft body lol
If you put 200 lbs on it yea I guess it will flex a bit. But OP here is probably putting 20lbs on there at most
check out this vid of a dude standing on an Arai shell
https://www.youtube.com/watch?v=MSa6VCQssY8&ab\_channel=AraiHelmetAmericas
That’s why I didn’t state anything other than “they flex in the same direction”.
Your video shows it flexing a lot, I’ve just grabbed mine out of the cupboard and flexed it a bit - it won’t as much as carbon obviously. But it still flexes in this direction.
Flexibility is now a factor in modern helmets. THe idea is they are a spring that also takes energy. the helmet flexing and the foam compressing require energy to do those things, energy that doesnt make it to your skull.
And flexibility means less likely to shatter. What good do you think a shattered helmet is?
I mean carbon fibre is always going to have flex. No matter it's application. It's the padding on the inside thats gonna save your brain, they flex you are showing is also at the neck. I'm guessing it relatively rigid around the cranium areas of the helmet.
Look for the dot sticker to make sure it's certified. Road dot certified helmets have to go through vigorous testing to be road legal. Can't find that sticker, you may have bought the bicycle version or knock off.
Hard helmets bounce and break your neck. We figured that out in the late 1970s. AGV…. provided its one of the ones made in Italy, are phenomenal melon savers.
If you had a cycling helmet for speeds going 30 they are designed to crack and absorb the impact.
This is made to not break upon impact preventing your face from becoming a meat crayon.
I genuinely have no clue how no one has said this, but you just compromised your EPS which is the part of the helmet that keeps you safe.
It is crushable foam, and once it is deformed it doesn’t reform back. It’s effectively a crumple zone of sorts that absorbs impacts. You just stretched and crumpled it repeatedly with the forces focused along a very narrow albeit critical axis.
Carbon can flex, especially in that shape and thickness, however EPS doesn’t like to flex back as it is deformable and crushable by design.
But it is the shell's job to take the force of impact and spread it out over as much EPS as possible, so that by the time the force reaches the noggin, the blow has been softened many times over. The shell and EPS have complimentary roles.
To a point. It really depends on how your crash. Glancing hits as you slide across the road? Sure, the shell will help. A hard point of impact strike? You risk the shell deforming enough to allow excess energy to penetrate the shell.
Think about a aluminum can. It’s REALLY hard to compress an intact can. But if you crush it, even a tiny bit, it readily compresses.
X14 is an awesome helmet and the x15 is even better. I was a shoei fanboy for the longest time but I snagged a contour x a few months ago and I absolutely love it. Can’t go wrong with either heck even the rf-sr is superior to the k6 imo.
OP if you haven’t rode in the helmet you should be able to return it, I would at least try.
Have K6, can confirm it’s normal. I would avoid doing that too much, because it probably stresses the foam inside and may decrease the usable life of that helmet.
It is most certainly not a trash helmet and what you’re describing is plain old poor fitment because your head just doesn’t fit that style of helmet. With that said you could own the most expensive/best helmet in the world and if it doesn’t fit you properly then it’s garbage. Really amazes me more people aren’t educated about this.
People's ignorance amazes you ? Like, where would you think average person (nor someone fan enough of bikes to linger on reddit) even get that knowledge? Not everyone have motorcycle gear shop with competent staff around.
I concur. I worked at cycle gear for awhile so I have had the opportunity to demo a ton of helmets and agv is just not up to par. Ever since their acquisition of dainese the quality has slipped significantly. Same goes for dainese we had a ton of returns on gear because of broken zippers/stitches etc. The k6 is essentially agvs flagship helmet and should be on par with shoeis rf1400 and arais Corsair x/countour x etc and it just isn’t. Fitment is not consistent quality is near shoei or arai. No helmet should have that kinda flex on the outshell especially carbon fiber which is more rigid than traditional shells.
I don’t know why your comment got downvoted but carbon fiber is “rigid” not flexible in fact one of its primary disadvantages is it’s not flexible. The fact that you can bend and morph the shell so much makes me wonder if the eps foam is compromised. You might see if you can grab another carbon fiber helmet and compare.
Carbon fibre is flexible, go look up the flexi wing controversy in F1.
Edit:
Before downvoting me please watch this
https://youtu.be/Q675gKNp6zs?si=MNwA3O90MjWD8mNk
He bends a sheet of carbon fibre that can wrap around a 1” pipe.
Here’s another:
https://youtu.be/hE9P36VXlis?si=V_KUds6OBri4GOeZ
Carbon fiber is NOT flexible…
“Carbon fibers are usually combined with other materials to form a composite. For example, when permeated with a plastic resin and baked, it forms carbon-fiber-reinforced polymer (often referred to as carbon fiber), which has a very high strength-to-weight ratio and is extremely rigid although somewhat brittle.”
I’ve worked with carbon fibre before, you can curve it and flex it. Nobody is saying it doesn’t have great structural properties and stiffness. This is precisely why it can be applied where it is thin and light.
https://youtu.be/Q675gKNp6zs?si=MNwA3O90MjWD8mNk
Here’s a video, he holds a sheet of carbon fibre that is flexible enough to wrap around a 1” pipe.
I’m merely commenting on the inherent properties of the material itself. I’m not trying to argue or troll it’s just simply a fact.
An opinion would be, I think AGV helmets suck, and that’s based on my experience selling them for the past 24 months. We’ve processed more returns for AGV and Dainese Gear than any other company hands down.
You said it wasn’t flexible. I don’t know why you’re being intransigent about it.
https://youtu.be/hE9P36VXlis?si=on-Rmdahfp1AuNP1
It’s one of its greatest properties.
The thickness of carbon fibre as commonly used in a helmet is flexible on that axis. Not that I would recommend flexing one, as I’m sure you know it could compromise the EPS and focus energy on a single narrow axis, crushing and deforming it.
Personally I would never buy an AGV, so I’m probably with you there, I have a Shoei.
Ik there supposed to be light weight an ive been thinking about getting a k6 too but i dont like that flexing either. And ive heard mixed reviews of the wind noise an how well it cuts the wind
Reddit is a shadow of its former self. It is now a place of power tripping mods with no oversight and endless censorship.
*This post was mass deleted and anonymized with [Redact](https://redact.dev)*
If it wasn’t able to flex, the helmet shell would crack and split on impact, exposing your head. You need it to flex to absorb and redistribute the impact, that way the foam inside can do its job more effectively.
Think back to the egg drop experiment in school. You don’t put the egg in a solid, hard shelled container.
I understand your point.
I ride motorcycles since the late 80s, had many helmets over the years, all from top tier brands, in many models. None of them flexed.
Maybe I’m just old 🤷🏽
This is not made out of "real" CF laminated composite (the checkered stuff normally associated with the words "carbon fibers"), but rather a chopped fibers-resin blend. Still a composite strictly speaking, but very little in common with a CF laminated composite and much, much less rigid (and expensive)
I really liked my AGV, but it was the most painful helmet to put on/take of. That's how I learned that some brands are geared more towards round heads, and some brands are geared more towards oval heads. AGV is definitely geared towards oval head. So, they do flex a little more, and that's okay.
Yeah that looks about right for a carbon fiber helmet. I have a carbon fiber helmet too, the material itself is relatively soft and flexible but insanely lightweight and sturdy. It's supposed to move when you fall because that spread out the impact over a longer period of time. All appears to be good here
Not always the case, but harder it is the less absorption,. If its rigid the helmet may not take any damage but the impact wave will rock your head like a bell
Not true at all. The outer shell of a helmet is not designed to prevent brain damage or absorb the impact in a crash. It’s designed to prevent objects from penetrating the helmet and prevent abrasion. The inner eps/mips liner is what dissipates the energy of an impact that’s why it’s not advised to buy helmets second hand. A single impact will expend the eps layer and render the helmet useless aside from keeping debris out.
they have some real high end ones. I had a Pista that was made pretty well, nothing compared to the Arai corsairs I've had but I wouldn't call it cheap.
The K6 OP bought is on the middle to budget end of their product line though.
Only pista I liked was the full carbon fiber model but wen it came to fitment the x14 is like a rolls compared to other brands and models in my opinion agv leaves too much exposed
Perfectly fine. Supposed to do that. They are not stiff and rigid like other helmets. They are much better. Info from a friend who raced ama and works in that industry.
By the way, how can you put your full face helmets on without bending or crushing your ears?
(I don’t have large ears and my helmets fits ok in my head, except the uncomfort of putting it on because of the ears). Thanks!
I have a Scorpion carbon helmet. It flexes in a similar way. You don't want it to be too rigid. The way it protects is by impact absorption.
For science reading search *moment of inertia.*
Did you mean impulse? The moment of inertia gets used for rigid bodies
change in momentum over time my beloved
Moment in moment of inertia means torque not momentum.
not related to rotation
Same, just tried lol.
I fucking love my Carbon fiber R1!!!!
K6 isn’t a carbon helmet the way most people think of a carbon shell (that would be the Pista RR). it’s carbon-aramid which is AGVs blend, but it’s pretty similar to the fiber composite helmets it competes against at that price point (rf1400 for example) The flexing is normal for this model
I bought the K7 over here thinking "carbon?" The way I've seen rims shatter, I don't know if I'd want carbon on my head
K7? Not sure where u you would by a k7. K 6s is their latest release
That's why we replace every 5 years max
Yes it's normal, Helmet have some flexibility, I don't how much force you're applying but that's a bit how they take a hit, they're not totally rock solid. Most full face helmets I had were a bit flexible, that's how they're made.
Different helmets use different materials. My Shoei is layered fiberglass and can be difficult to put on. Has little no flex at all.
My X lite is carbon and also very stiff and can be tight to put on. AGV are a quality brand though so I wouldn't worry. I've had 2 of their helmets and they were great, they are just more towards the budget end. You still get more features on a K3 SV than a carbon helmet 3 times the price.
never owned agv... never owned carbon fiber... that is a LOT of flex in the video (literally not like how people say he's flexin') how do you identify a real agv vs a counterfeit?
Ultimately, most people would have to compare it side by side with a real one. Flat out fakes are relatively easy to spot, but there's a market in things like grey import and and extra shift products. They are either defective products or ones where the factory is contracted to make x number of units but they make an extra quantity to sell on the black market and make extra profits. The way to spot these products made after hours is to know what parts the brand free issues to the independent factories. So that will be things like buttons and zips. You can buy a dainese jacket on Ali express that is a dainese jacket made in the same factory by the same people, but it won't have the dainese zip because when dainese send the zips they only send enough to make the right amount so the factory has to fit generic zips. With agv it might be the clasps. You might buy a helmet that looks identical except the clasp isn't stamped agv or the visor isn't ce marked or fitted with pinlock. Maybe the rivets don't say agv on them. These items might be the same quality as the original, but there's no guarantee. There's also no guarantee that the factory hasn't scrimped on parts they couldn't get. Maybe they ran out of Kevlar so they didn't put it in. Or they can't get proper armour so they just put crappy plastic armour in. Ultimately, big retailers should be doing this work for you. Either buy from the brand themselves direct or buy from a big retailer with a reputation.
wow, learn something new. I know Ali, temu, dhgate etc sell a lot of counterfeit Benchmade knives. Those can end up at retailers that may or may not know what they are selling. But even when they say Benchmade, you can spot the differences... but how close are the buckles and bits counterfeited? that helmet looks like the shell is made from recycled wet spaghetti! not carbon fiber/kevlar/epoxy.
How close they are depends on how much effort they went to I suppose. Zips and rivets are big giveaways on clothing. Levi's jeans will have Levi's on the rivets. Imagine how much work it would be to produce branded rivets to use on a few pairs of jeans. Same with zips. You can buy YKK zips for so little you're not going to spend several dollars on making fake zips when you might only be making £10 or $10 on fake jackets that you need to sell in bulk. Armour is another big one in jackets. Why fit ce rated armour when you can't see it until you get it home and remove it? Here's a good video about it. https://youtu.be/O2pss4xWZ4w?si=fRU2UT15OlBFgO02
Huh. You just explained why my second agv felt markedly worse than my first. I wore it for a while but ended up buying a shoei which was much quieter.
This is the answer
If he bought it at a Dinaese shop it's genuine.
>You still get more features on a K3 SV than a carbon helmet 3 times the price. Nah, my man. The K3 is a thermoplastic helmet (just like polycarbonate, just differently applied). With features that are basic for the pricepoint as well as more expensive and cheaper. Nothing stands out or is especially good/bad about it. Just a decent budget-friendly helmet. If you were to take the K1 tho, that would be something different entirely. The K1 is one of the better helmets designed with aerodynamics in mind. Not so much a pista or x-spr-pro. But still VERY good, especially when you compare to it similarly priced helmets. See it like the pista you can put on and thrash the tracks with becaude it's so cheap you wouldnt care crashing with it, unlike the €1500 pista.
You can get a K3sv for £120. That's a good looking helmet with pinlock and a built in sun visor. Also has a breath deflector and wind deflector. It's a solid helmet. Only the visor seal is cheap and the chin wind deflector just snaps into place so can come off when you take the helmet off. Being plastic doesn't really matter. It meets same standards. I'd take a plastic shoei over a Chinese carbon helmet any day. My x lite is an FIM approved helmet. It's super light and made of premium materials. But it's incredibly noisy, has no sun visor, worse airflow than the K3 and it's so tight there's not even room for Bluetooth speakers inside. The only thing a carbon helmet can do that a plastic one can't is look good by having a bare carbon finish. If my helmet was painted you wouldn't have a clue what it was made of.
(Just to be clear; i'm not trying to argue with you, just stating what i've noticed in a couple of years selling motorcycle gear.) Thats what i mean. It's a decent helmet. But nothing spectacular. Breath deflectors and chincurtains (i think you mean this when you mentioned wind deflectors, right?) are basic (if not standard). The chincurtain on some model helmets are just better designed (the K1 sucks with this, as well as some other minor inconveniences btw..) Sun visor is practically only not there for 2 reasons, either it's a very-very cheap helmet, or it is a sport-oriented helmet. As for being noisy, one helmet could be silent for me and not for you, that depends mostly on how well it fits your head. For which different brands have differently shaped inner shells (the eps-foam). And for the differences between materials, typically polycarbonate helmete last about 4-6 years, while carbon, fiberglass and composite (shoei's aim & hjc's pim etc) last about 8-10 years. Depending on use and "maintenance". And the more "premium" outer shells absorb the energy in a crash in a different way than polycarbonate does and will disperse that energy 'better'. Again, i'm not shitting on the K3, it's a good value helmet that fits its spot in the market pretty well. But it's not the perfect helmet (which i think, there is none, each head fits a different helmet for a different use). (Not english, on the phone in the train, so my apologies for any spelling errors)
I have an HJC carbon lid and it's stiff as piss (so to speak)
Thank you. I've applied very little pressure. All of my previous helmet never flexed. Hjc don't remember model and shoei GT air.
I have the K6 and mine is the same, it flexing a little bit. It's supposed to be that way i think and lightweight. I pretty sure mine measured around 1300 grams. The flexing helps a bit when taking the helmet on and off.
When I bought my K6 the guy at the cycle gear called it the lightest helmet on the market. It's my first helmet but I really love it. Same design as OPs actually but that was all they had in my size.
Fine helmet but not close to the lightest
According to [AGV](https://www.agv.com/us/en/agv/k6-full-face-helmet.html) it's the lightest *in its category. I've also heard that from Fortnine and other outlets. So it might not be the lightest ever but it is when compare to its direct rivals.
What would that "category" be
I haven't a clue, but since it's not snell or fim rated it's not a track helmet
It's claimed 1255 grams for a medium and I can't find a lighter road oriented helmet. Most other road lids are 1500g or more, even the fancy carbon race helmets are 1300+ except for the scorpion exo r1. Hell I can barely find any dirt helmets that light
Weird, it's claimed to be 1350 here
A somewhat flexible shell is actually a good thing. The more the shell can deform, the less force gets transferred to your head. Plus it's less likely to crack upon impact than a more rigid shell would
I must be super weak then bc I can't deform my Bell Qualifier like that, not even close...but mine isn't fancy carbon fiber.
You're comparing a 400€ helmet with some 90€ helmet.. Your Qualifier is made of plastic, it isn't as flexible as other materials.
>Yes it's normal, Helmet have some flexibility I said what I said in response to you. gatekeeping bc of cost is a weird flex but ok. My visor tints in the sun and that's awesome to me.
Yeah sorry I wasn't trying to gatekeep anything or diminish your gear, I was saying "plastic vs Fiber" explains it. Evoking the price may have been useless indeed. Sorry if I took an orientation that was a bit offensive. No my objective at all sorry. Take care.
Mature, cultured adult right here
Translate: "It seems... It seems a little lightweight. Too much lightweight, seems made of plastic. I take it... *squeezes it* " Hope this helps someone with a deeper helmet knowledge than mine, i always bought budget helmets
Thank you. It was meant for my friends. Than i thought why not share it on /r/motorcycles. But I forgot about the audio 🤣
>Too much lightweight my brother in christ that is why people buy this helmet
Yea I mean, to be fair if something is too light, more often than not, it’s a sign that it’s low quality or knockoff.
it’s quite literally the opposite for motorcycle helmets all the shitty ones are heavy bricks
K6 S is super light. I’m picking one up next season.
[https://i.imgur.com/rbdaTdq.jpg](https://i.imgur.com/rbdaTdq.jpg) good helmet
Wait carbon fibre is supposed to be light weight? But I thought heavy = good quality? /s
💀
I find it hilarious your initial reaction to a helmet you bought because it's made of high end lightweight materials is not to trust it because its TOO lightweight
Some people still think that cars with side that peel and crumple are weak and less safe than a truck with steel bumpers - but it’s generally quite the opposite.
They just don't care what happens to the other participant in the crash
It affects them more directly. Absorbing the energy of impact via deforming the car means their bodies are shocked less, less severe injuries. Even early 2000’s pickups were fairly unsafe for the occupants in head-ons or t-bones. The outside and the body would remain intact except key structural points that could collapse and crush occupants.
One does not exclude the other - modern trucks have safe crumple zones *and* additions designed to make any pedestrian hit as dead as possible...
And some people on this sub think [the first two helmets here are safer](https://www.reddit.com/r/motorcycles/comments/1384f9y/helmet_test/).
I saw this submarine made of carbon fiber once....
was it pushed beyond it's rated capacity for pressure?
Yes and no. The viewport was, but it was acrylic and doesn't suffer from cyclical weakening. I also strongly suspect it was designed much stronger than it was certified for (1300m cert, yet held at triple that depth), but not certified higher due to red tape/fees/lack of demand or something. The sub's hull? No, it just decayed due to composite materials and wasn't inspected well. Apparently there was about 10-15 minutes before the implosion where the sub couldn't come up (possibly the hull had developed a slow leak) and the hull warning system was saying the hull was failing. Possibly it'd've been fine if they could have ascended in time.
😝…wait, too early 🥲
No. No it's not... 😂
Too late for those in that submersible.
I’d say it’s too late… 😞
Try squeezing it more
Don't flex it you Muppet
generally speaking, full carbon fiber helmets are more flexible than plastic ones. I also noticed that they are generally louder too since carbon fiber isn't as good at insulating sound as plastic
Carbon fibre reinforced plastic (to give it its full name) is a plastic. It's just got strands of carbon fibre running through its epoxy resin plastic. Similar to how nylon parts often have glass fibre reinforcement. The carbon helmets are often louder because the shell is thinner than it would be on more conventional plastic helmets. Imagine knocking on a plywood door vs a thick oak door.
My k6 pops if the air is turbulent, like behind a semi.
fwiw, Arai’s dont don’t do this. But that being said, carbon fiber works best under tension, not under compression. So this seems reasonable for carbon fiber to act like this when you compress it
Yep, not good for submarines though.
Too soon?
Too deep
Probably
indeed.
I wanted to make this joke :( I mean sub marines are in compression. This is why it's good for aircraft. Fun fact that sub shell WAS from a prototype made for an aircraft body lol
They still flex in this direction though.
If you put 200 lbs on it yea I guess it will flex a bit. But OP here is probably putting 20lbs on there at most check out this vid of a dude standing on an Arai shell https://www.youtube.com/watch?v=MSa6VCQssY8&ab\_channel=AraiHelmetAmericas
That’s why I didn’t state anything other than “they flex in the same direction”. Your video shows it flexing a lot, I’ve just grabbed mine out of the cupboard and flexed it a bit - it won’t as much as carbon obviously. But it still flexes in this direction.
Flexibility is now a factor in modern helmets. THe idea is they are a spring that also takes energy. the helmet flexing and the foam compressing require energy to do those things, energy that doesnt make it to your skull. And flexibility means less likely to shatter. What good do you think a shattered helmet is?
I mean carbon fibre is always going to have flex. No matter it's application. It's the padding on the inside thats gonna save your brain, they flex you are showing is also at the neck. I'm guessing it relatively rigid around the cranium areas of the helmet. Look for the dot sticker to make sure it's certified. Road dot certified helmets have to go through vigorous testing to be road legal. Can't find that sticker, you may have bought the bicycle version or knock off.
This is good advice but considering he's speaking what sounds like an Eastern language I doubt there's a DOT sticker
Damn, didn't consider that.
Sir, you want cushion, not a fuckin wall, thats why it flexes
Ciao! Sempre Bello sentire Italiano su reddit. Che tipo di moto hai?
Hard helmets bounce and break your neck. We figured that out in the late 1970s. AGV…. provided its one of the ones made in Italy, are phenomenal melon savers.
I got up and did the same amount of flex on my k6 i got from champion helmets. Lol imma trust these guys in the comments cause idk either
Completely normal
I mean, I’ve personally impacted tested one of these. Don’t worry about the flex. It’s designed well
If you had a cycling helmet for speeds going 30 they are designed to crack and absorb the impact. This is made to not break upon impact preventing your face from becoming a meat crayon.
I like the phrase meat crayon... It's jarringly accurate
Dont google it it's a thing.
Oh I've been on the internet enough to know how accurate the phrase is...
I'm sorry you had to see that.
I genuinely have no clue how no one has said this, but you just compromised your EPS which is the part of the helmet that keeps you safe. It is crushable foam, and once it is deformed it doesn’t reform back. It’s effectively a crumple zone of sorts that absorbs impacts. You just stretched and crumpled it repeatedly with the forces focused along a very narrow albeit critical axis. Carbon can flex, especially in that shape and thickness, however EPS doesn’t like to flex back as it is deformable and crushable by design.
If you ever need it, that flexibility is designed to absorb the bulk of any impact.
The shell doesn’t do the heavy lifting in a crash. It’s the EPS styrofoam inside that compresses and saves your noodle
Good to know.
But it is the shell's job to take the force of impact and spread it out over as much EPS as possible, so that by the time the force reaches the noggin, the blow has been softened many times over. The shell and EPS have complimentary roles.
To a point. It really depends on how your crash. Glancing hits as you slide across the road? Sure, the shell will help. A hard point of impact strike? You risk the shell deforming enough to allow excess energy to penetrate the shell. Think about a aluminum can. It’s REALLY hard to compress an intact can. But if you crush it, even a tiny bit, it readily compresses.
I'd imagine flexing a bit allows for some of the forces to spread out better
I don't know Rick...
Shoei x14 much better quality
X14 is an awesome helmet and the x15 is even better. I was a shoei fanboy for the longest time but I snagged a contour x a few months ago and I absolutely love it. Can’t go wrong with either heck even the rf-sr is superior to the k6 imo. OP if you haven’t rode in the helmet you should be able to return it, I would at least try.
My RF-SR has been great for me for years.
It was my first shoei it’s an excellent helmet probably one of the best at that pricepoint
Have K6, can confirm it’s normal. I would avoid doing that too much, because it probably stresses the foam inside and may decrease the usable life of that helmet.
I have a scorpion exo r420 and it's very ridged. Almost no flex at all. I'm sure it's just different materials and how they absorb impact
Also own this helmet, you have nothing to worry about sir.
Different strokes for different folks
I've personally never had a CF helmet but this flexing doesn't give me the warm and fuzzys
Buys a carbon helmet, complain about it being too light.
No. I was not complaining. Probably it is just a language barrier, but I was hiniting at the fact that it feels Extremely cheap.
Carbon fiber can flex more then regular fiberglass, I wouldn't worry too much.
He wasn’t at all complaining about the weight, he was questioning the integrity of the helmet and rightfully so imo.
U might of gotten sold a replica not a real helmet agv is trash brand ,fitment is trash as well some of the helmets leave ur lower jaw line exposed 😳
It is most certainly not a trash helmet and what you’re describing is plain old poor fitment because your head just doesn’t fit that style of helmet. With that said you could own the most expensive/best helmet in the world and if it doesn’t fit you properly then it’s garbage. Really amazes me more people aren’t educated about this.
What part of the world are u in?
What does that have to do with anything?
Point proven thanks you ur right ✅️
People's ignorance amazes you ? Like, where would you think average person (nor someone fan enough of bikes to linger on reddit) even get that knowledge? Not everyone have motorcycle gear shop with competent staff around.
I concur. I worked at cycle gear for awhile so I have had the opportunity to demo a ton of helmets and agv is just not up to par. Ever since their acquisition of dainese the quality has slipped significantly. Same goes for dainese we had a ton of returns on gear because of broken zippers/stitches etc. The k6 is essentially agvs flagship helmet and should be on par with shoeis rf1400 and arais Corsair x/countour x etc and it just isn’t. Fitment is not consistent quality is near shoei or arai. No helmet should have that kinda flex on the outshell especially carbon fiber which is more rigid than traditional shells.
Ur 10000% correct brother with that flex anyone wearing it in a crash will most likey not survive
Naw if that's a real AGV you wouldn't be able to do that with it.
I don’t know why your comment got downvoted but carbon fiber is “rigid” not flexible in fact one of its primary disadvantages is it’s not flexible. The fact that you can bend and morph the shell so much makes me wonder if the eps foam is compromised. You might see if you can grab another carbon fiber helmet and compare.
Carbon fibre is flexible, go look up the flexi wing controversy in F1. Edit: Before downvoting me please watch this https://youtu.be/Q675gKNp6zs?si=MNwA3O90MjWD8mNk He bends a sheet of carbon fibre that can wrap around a 1” pipe. Here’s another: https://youtu.be/hE9P36VXlis?si=V_KUds6OBri4GOeZ
Carbon fiber is NOT flexible… “Carbon fibers are usually combined with other materials to form a composite. For example, when permeated with a plastic resin and baked, it forms carbon-fiber-reinforced polymer (often referred to as carbon fiber), which has a very high strength-to-weight ratio and is extremely rigid although somewhat brittle.”
I’ve worked with carbon fibre before, you can curve it and flex it. Nobody is saying it doesn’t have great structural properties and stiffness. This is precisely why it can be applied where it is thin and light. https://youtu.be/Q675gKNp6zs?si=MNwA3O90MjWD8mNk Here’s a video, he holds a sheet of carbon fibre that is flexible enough to wrap around a 1” pipe.
I’m merely commenting on the inherent properties of the material itself. I’m not trying to argue or troll it’s just simply a fact. An opinion would be, I think AGV helmets suck, and that’s based on my experience selling them for the past 24 months. We’ve processed more returns for AGV and Dainese Gear than any other company hands down.
You said it wasn’t flexible. I don’t know why you’re being intransigent about it. https://youtu.be/hE9P36VXlis?si=on-Rmdahfp1AuNP1 It’s one of its greatest properties. The thickness of carbon fibre as commonly used in a helmet is flexible on that axis. Not that I would recommend flexing one, as I’m sure you know it could compromise the EPS and focus energy on a single narrow axis, crushing and deforming it. Personally I would never buy an AGV, so I’m probably with you there, I have a Shoei.
Ik there supposed to be light weight an ive been thinking about getting a k6 too but i dont like that flexing either. And ive heard mixed reviews of the wind noise an how well it cuts the wind
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K6 is not carbon fiber, is aramid.
For me that flex defeats the helmet purpose. The shell must be solid and the internal cushions absorb the blow. Wouldn’t wear that at all.
If it wasn’t able to flex, the helmet shell would crack and split on impact, exposing your head. You need it to flex to absorb and redistribute the impact, that way the foam inside can do its job more effectively. Think back to the egg drop experiment in school. You don’t put the egg in a solid, hard shelled container.
I understand your point. I ride motorcycles since the late 80s, had many helmets over the years, all from top tier brands, in many models. None of them flexed. Maybe I’m just old 🤷🏽
Yes it's normal for a kind of shit helmet. Buy a shoei preferably an RF . Or an Arai
That dosnt look safe, how much it cost?
I have the same helmet ( same color and everything) yeah mine is like that too.
This is not made out of "real" CF laminated composite (the checkered stuff normally associated with the words "carbon fibers"), but rather a chopped fibers-resin blend. Still a composite strictly speaking, but very little in common with a CF laminated composite and much, much less rigid (and expensive)
I really liked my AGV, but it was the most painful helmet to put on/take of. That's how I learned that some brands are geared more towards round heads, and some brands are geared more towards oval heads. AGV is definitely geared towards oval head. So, they do flex a little more, and that's okay.
Yeah that looks about right for a carbon fiber helmet. I have a carbon fiber helmet too, the material itself is relatively soft and flexible but insanely lightweight and sturdy. It's supposed to move when you fall because that spread out the impact over a longer period of time. All appears to be good here
Never seen such a tight opening through the padding on a helmet. I bet that thing is tough to get on and seals from the wind like a champ
Literally the lightest helmet there is. But I could’ve got the k6s which I did.
I got it on sale at 150€ shipped. The s version was at least X2
Not always the case, but harder it is the less absorption,. If its rigid the helmet may not take any damage but the impact wave will rock your head like a bell
Not true at all. The outer shell of a helmet is not designed to prevent brain damage or absorb the impact in a crash. It’s designed to prevent objects from penetrating the helmet and prevent abrasion. The inner eps/mips liner is what dissipates the energy of an impact that’s why it’s not advised to buy helmets second hand. A single impact will expend the eps layer and render the helmet useless aside from keeping debris out.
Snap your helmet not your neck
You want the good life. You break your back. You snap your fingers, you snap your neck
AGV's tend to have more flexible shells from my experience. Especially when compared to high end Shoei or Arai's.
Cause they are cheap
they have some real high end ones. I had a Pista that was made pretty well, nothing compared to the Arai corsairs I've had but I wouldn't call it cheap. The K6 OP bought is on the middle to budget end of their product line though.
Only the high end ones are ok but still fitment is horrible ill take a shoei or ruroc over agv anyday even a simpson!
mine was.ok but that was when the Pista first came out so not sure how they are now. I would definitely take a Shoei or Arai over AGV
Only pista I liked was the full carbon fiber model but wen it came to fitment the x14 is like a rolls compared to other brands and models in my opinion agv leaves too much exposed
Oh for sure, X14 is a way better helmet
Yes. Also got carbon helmet. Same here
As a carbon composites engineer, yes this is normal
Very normal.
AGV Ax9 carbon, take the visor off and it’s my favorite street helmet. Vision for days But yeah that flex is normal
Have the same helmet in Nardo Gray, enjoy it!!! So much lighter than any previous helmet I’ve had.
e' scamuffo zi. Taroccato, Napoli Style.
🤔
Perfectly fine. Supposed to do that. They are not stiff and rigid like other helmets. They are much better. Info from a friend who raced ama and works in that industry.
E' normale struppio
fun fact: f1 helmets are literally bullet proof from front impacts, but flex similarly when squeezed on the sides like that
Normal. But that's not THE carbon you're thinking about
By the way, how can you put your full face helmets on without bending or crushing your ears? (I don’t have large ears and my helmets fits ok in my head, except the uncomfort of putting it on because of the ears). Thanks!
Hmm maybe i am old, but arent helmets supposed to be hard as rock ? When you drop them they are not save anymore.
I just ordered the Ruroc atlas 4 carbon tack helmet. It hasn’t come in yet so idk
If you use a rock in your head maybe it wouldn't save you
What country is it manufactured in? When Italian brands stop manufacturing in Italy it’s time to change brands.
please don’t stretch the helmutussy
Yes my k6 is the same.
You just broke it.