Love how the safety precautions increase with every buckle break.

Of all the wild machines I've built, this piece of plywood was probably the most dangerous. 10/10 would ride again. ~RF9

I saw this video a couple of weeks ago. Last week when I was going ready to go out on my bicycle I thought about what you said about the double D-ring closure and how it forces you to adjust your helmet properly every time you put it on. So I checked my own strap and found it was a little looser than it should be. I adjusted it, and found it a little tighter than I'd like, but left it that way. 8 minutes later I was sitting on the side of the road, surrounded by shattered carbon and spitting my teeth into my hand after going face first into the A-pillar of a Hyundai at 30km/h (car came out of a driveway 3-4m ahead of me - I only had time to wince). The fact that you inspired me to adjust my helmet may have contributed to the fact that apart from some dental damage, all I have are a few bruises from this encounter. Thanks!

actually it is really impressive how much strenght the magnetic ones can tolerate

Really excited for the next "why motorcycles still use this ancient tech" video and it's just about the wheel

I liked how with every strap tested Ryan was getting lower to the ground to stay safe....then he finally put a helmet on.

"Is there something timeless about a set of double D's??" The deadpan delivery of this line LMAO!!

I'm new to motorbikes and when I went helmet shopping the guys in the store made a point of informing me about the superiority of a DD closure. They mentioned the fact you have to adjust for tightness every time but I'm also now aware they're very much not going to break. Thank you.

“HEY! Wanna watch a video about D-rings?” NO, that sounds boring AF! “Wanna watch an F9 video about D-rings?” Yes, yes of course, I’m sure it’ll be interesting…

What I learned from all this is that we should be making helmet straps out of Stretch Armstrong.

The best argument for alternatives to the D-rings may be, as you said, protecting motorcyclists from ourselves. How often does a rider neglect to fasten a D-ring strap? Maybe the safest fastener is whichever one that a given rider will fasten every single time they get on their bike.

I just bought a new helmet and I hate the double D ring. This one video with the fact that you always tighten it every time convinced me.

Funny watching them get progressively safer when testing the straps' breaking points.

"Is there something timeless about a set of double Ds" -RF9, 2021

Great videos man. As someone somewhat new to riding but already obsessed.... I am finding all the insight incredibly valuable. Thanks for taking the time!

Excellent work as always Ryan. Informative whilst being entertaining.

It deserves to be said that ryan's presentation skills are always improving.

I love how dangerous your safety tests were!

This video is 7 minutes long. Which is exactly how long it takes an Arai XD4 owner to fasten their double D strap.

Thanks for interesting videos! I had my first JET-helmet 1968 and it had Double D-rings. Then I have had more modern locking technics. However - few years ago I bought a modern but retro style Jet-helmet with double D-rings. This helmet was used only a few occasions as I prefer integral helmets but this time it was a slow bike and it was sunny weather and the style looked autentic vintage-like. Almost 2 yeras ago I had an accident by driving into the green grassy strip along the road. The speed was 45-50 km/h with my renovated to state as new Husqvarna from 1953... Oh shit I thought - I have been into enduro in the eighties so I'll handle this. Next moment the bike just disappeared from me and I counted 3 full loops in the air, and only a half 4:th loop then I hit the ground on my back. I lost all breathing air but was alive. I got no air to breath so I first checked my fingers - I could feel all of them. I got of my gloves and the fingers opened the double-D-ring lock autonomously.... amzing - this just happened by it self. With full breathing capacity I just laid down there for some minutes. I tried to remember when it was the last time I had a double D-ring helmet. Then I wondered why none of the cars were stopping and check if I was OK. I found that the side of the road was a long and fairly steep slope. I turned around and I saw the shining blue bike several meters above me on the grassy slope. As soon I reached the roadside I got help. But - I am still amazed that the body can learn things and then perform them just by itself!

Remember everyone: Boots on, jacket on, gloves on, helmet..... gloves off, helmet on, gloves on. This is what the "double D" means to me, I swear it's every time I stop.

I do materials testing for a living, and I love the simple, cheap and effective (albeit not accurate, but definitely representative) approach. Great stuff guys!!

Will always look back fondly on that first week accomplishment of securing the Double D with gloves on. Wouldn’t have it any other way :)

Great work. Thanks again!

And like when he tested waterproof clothing, once again, Ryan is putting his life on the line for our sake

The only place on the internet that makes the real important questions on the motorcycle world. And better: using science to answer them!

Everything this guy does is not only entertaining, but really informative.

I always try to buy helmets with the D-rings. Sometimes I've been forced to buy another system, when a helmet was too good in other ways to pass up. BUT I always lamented the absence of D-rings. Some people find the D-rings fiddly, but I find it the easiest to deal with - the other systems are fiddly and you have the hassle of trying to adjust the constantly slipping strap adjusters. Weirdly I've noticed D-rings tend to come on the very cheapest helmets AND the most expensive - it's the inbetweeners that insist on putting these other crap buckles on their helmets... Great Vid - Cheers FortNine.

thank you for the continued content!

As he was turning that ratchet and hiding next to the cabinet, I kept thinking "ALL THE GEAR ALL THE TIME, RYAN."

Not only have you Been filling my head with classy knowledge. You may save my life. Bro I think I love you.

Thanks for another great video!

The maximum effort from the FortNine team as always!

Breaks plexiglass. Let's do more! *hides by table side * This'll do lol

You made your point of view clear and sensible. Double D are probably a little more efficient and are the only way to go if you want track (in France). But the reasons is more because it is a standard that track emergency people are trained to. As any gear is much better than no gear, any helmet is better than no helmet...whatever the type and locking style. I would like to see what is the resistance of the other end of the strap too. I reckon the strap will break off the shelves well before any strap locking system...

According to ECE The retention system test involves placing the helmet’s retention straps under load in tension. For this test the load is progressive; first a load of 22.7 kg (49.9 lb.) is applied for 30 seconds, then it is increased to 136 kg (299.2 lb.) for 120 seconds, with measurement of the stretch or displacement of a fixed point on the retention strap from the apex of the helmet. Some new standards in FMVSS 218 will go into effect in May 2013.

All I had running through my head this entire video was the image of Marco Simoncelli's helmet rolling away from him on the track, and how horrified I was to watch that back in 2011. The force of the impact his helmet had to take to come flying off is just unreal, as demonstrated here in this video. Truly a tragedy- RIP Super Sic :(

Sad to see Aneesh has left but hope he’s successful with what comes next.

Incredible videos man, you are one of the best youtubers ever!

Excellent video mate

I like how the approach to safety improves with each test. Like manufacturers should be doing, striving to always improve.

Interesting - I have two helmets, one with the old school D-rings, and one with the sliding ratchet. I prefer the ratchet as quicker and simpler - I had no idea the D-rings might still be a better solution.

Love this video! Great job!

Wow! I now have a new found appreciation and respect for the good old double D buckle. That will help me stay calm and relieve frustration the next time I forget to buckle my helmet before putting my gloves on.

There's something timeless about ... huge tracts of land.

Definitely something timeless about a set of double D's 🥰

Most interesting video I’ve watched in a long time!! Thanks!

Thanks for this video, amazing content, since always since ive meet your channel... thanks for your work. You do it like you born for it ;D

I dont drive a motorcycle and never plan on doing so, but i enjoy watching the videos just bc Ryan. I would even watch him review different cobblestones

Facts over opinion. Real world tests of the hardware. Grade A work. Thank you

Great content as usual.

Thanks guys. I have wondered this for a long time. Great answer. Cheers

I absolutely love your content! Full of class, humor, wit, and above all, ACTUAL useful information we can use.

Love the “safety” repositioning and add’ons after each test😅. As always fun informative video!

another classic /fortnine well done

Excellent as always 🙂

My helmet has a ratchet connector and I like it due to the ease of use. But I always check that the strap is tight and I agree that this is the most problematic issue on helmet wear. Thx for your insight.

"Don't forget to dislike and unsubscribe." gets 59 dislikes out of 7.4k likes

Great job, once again!

Love your way of telling things and your knowledge ❤😮

My main concern with Fidlock is that sometimes when the clip connects, it is in a metastable position that *seems* to be done up but it isn't actually seated properly for whatever reason. The moment the strap is tugged, it releases. The potential for a metastable situation is the epitome of Murphy's Law - there's a nonzero chance that if the rider doesn't check that it's done up after hearing the 'click', every time, it might be in that metastable position during a crash. I have a helmet with Fidlock and I've made it a personal habit to always give the strap a tug/wiggle to check that the strap has, in fact, connected itself properly. Sometimes it has not.

yee! had a feeling another video was coming. thank you for the continued content!

Appreciate your work ❤️

These FortNine vlogs are consistently funny, entertaining and informative.

I like the European/Canadian ratcheting buckle. So easy to get on and off. It was by accident I happened upon it and now I'll never change.

Another great class by the master, Ryan today. I always learn things I didn't know I needed to learn about. So much fun.

Always informative, interesting and entertaining

Super enlightening. Thanks a lot

Absolutely love it, question everything, don't just except old standards because they've been around forever or new tech bc it's new. He really objectively looks into all of it.

Would love to see the Echo Quick release buckle tested this way. It claims to exceed SNELL, DOT & US DOJ safety standards

Never had D-ring helmets. Had helmets with a sort-of miniature seat belt lock, and currently one with a fully metal micro-ratchet-style quick release thingamabob. They're awesome! 😁

well i love that the most basic is the most strong. also that feeling of strapping up that double d knowing you are rididng cant be beat

Nothing beats a coffee and F9 on a Sunday morning.

I love the science! Each time I learn something new on this channel!

"Convention is not perfection" is my new favourite phrase. Love your videos brother

I just found this dudes channel since im getting into road bikes. Man he has some good writing and one liners holy smokes.

You could've added a ratchet out of metal to the mix, like the ones used on the Shoei GT-Air 2

You know what? Since I am not a motorcycle gear manufacturer, I will remain subscribed and even hit the like button! And what you gonna do about it, Ryan?

Great job guys.

glad to see the camera taking proper precautions

Absolutely brilliant! Thank you for your civil service to ALL riders. You served up an ace, let’s see how the manufacturers respond…

Ryan F9: "...or are double D's just too classic?" Ryan F9: *looks at the camera and smirks* 🤣

i can't belive the production on your videos, it's insane

man i love your videos

I had a mini seatbelt type of helmet latch before. If I wasn’t paying attention it would pinch me when clicking it. It’s double Ds for me. They work best.

I was just looking for a new helmet with a ratchet strap last week. Man, I'm glad I saw this video - thanks F9!

Those DD rings are also on the safety helmet I wear for horseback riding. That reminds me, the leather paddock boots I wear for English riding are also my motorcycle footwear of choice. Usually with a pair of half chaps.

As a long-time motorcyclist, this came as a surprise. A racing scooter friend of mine (has a Lambretta which tops out at 100mph {160kph}) told me that the scrutineers will instantly reject any rider whose helmet doesn't have a double "D" fastening. I thought it was because the DD was easier to release if the rider was spark-out on the floor after an accident but *NO,* it's because the DD is stronger than the webbing. The things I didn't know I didn't know.... Thank you for risking life and limb for us & bringing it to our attention.

God damn I love this channel. I don’t even ride anymore but I just can’t stop

I feel I should point out that, while ultimately proving what is to be expected, that the test measuring procedure is flawed. Using a torque wrench on the jack to obtain your values will not be consistent unless every failure occurs at exactly the same height of the jack extension. Due to the geometry of the scissor jack, the further it is extended, the less torque is required to be applied to the drive screw. The data might be able to be corrected by measuring the height of the jack at failure, in addition to the torque value on the screw, and extrapolate the data across the Jack's geometry mechanical advantage curve.

Thank you for making unique content

Wow! I bought a Smith mainline fullface mtb helmet a couple days ago, happy it comes with d rings.

Arguably, and as mentioned, for the DD strap break you're already dead or decapitated. I wouldn't use the plastic 'Dicky' on a motorcycle helmet but the ratchet is by far my favorite. It can be adjusted near perfect and due to the teeth it has some space to adjust automatically if you put on some underchins. More importantly, it can easily be operated with gloves and takes a second to do/undo. This part being important when using your bike for daily errands with constant on and off. The best example I can think off the most prevalent and careless riders - city food deliveries that boomed due to Rona. If their helmet is tightened it's a ratched, while DD's are usually just flapping in the wind. When shopping for helmets I actively avoid DD system. I would consider the German overengineered one too.

Double D is by far the most comfortable strap. Perfectly adjusted every ride.

There is one downside to the double D-ring buckle. The strap is dragged over metal edges every time you engage and disengage it, so strap wear is a factor. Good to know it holds so well, though.

I really like these videos you provide great entertainment with worth wile facts. and you don't waist time doing all this. Thank you once again.

I'm so glad you just put out this video... I have a backward facing GoPro on my daughter's motorcycle and she just got in an accident and you can see where the helmet strap clearly held the helmet on her head as she was flying through the air.... If that helmet strap wasn't tightened correctly the helmet would have flown off before hitting her face on the ground with the initial impact. Thank God for the evolution of these buckles 🙏

Ryan’s doing a great job at telling us useful geeky stuff in an entertaining way. Im glued to the screen the whole time during the video. Keep up the good work!

I'm hooked on these videos :)

That was a good video, and I’ve just subbed in 👊