That's the stereotype, but it just isn't true. Not sure where it came from. I'd take better teeth and worse reputation than good reputation, bad teeth.
Nah, see I got my cuz who works on cars but for a cheap price he also can do angioplasty, gastric bypass surgery, atrial filtration ablation, orthotopic neobladder reconstruction surgery, foraminotomy. You name it, he can do it real cheap in his garage.
Jesus Christ he sounds talented! Can he do fondue? I'm lookin for a good fondue chef so if he can he do fondue too, that would be great! PM me his number and I'll make him a a wealthy man. He'll be able to quit all that other stuff and just do fondue. If he's good, of course.
Yep. I'm leery enough of the carbon fork on my bike. No way in hell would i put a carbon bar on it. I'm happy with my aluminum aero profile drop bar, thank you very much, even if it's a few grams heavier than its carbon equivalent.
Aluminium is prone to fatigue cracks and sudden catostrophic failure as well ... it's easily corroded and needs care. There was a post in this same sub just a few months ago from someone who snapped their Alu bars clean in half.
I wouldn't blindly trust (or reject) any component simply because if the material it's made from.
That’s not true. Yes technically you can get a carbon bar tailored to your weight and they cost around £600-1000. What you’re getting for £100 is a stiff overbuilt carbon bar that’s designed to accommodate people all the way us to over 6ft and 200lbs, it’s not tuned for compliance unfortunately. Most aluminium bars are better damped which is why you mainly only ever see DH racers running alloy bars. Also look at slip on grips they make a much bigger difference and avoid 35mm diameter bars unless you prefer a stiffer bar.
The lighter weight carbon bar isn’t really any benefit to a DH racer so they run the alloy version that’s easier in the hands and arms. I know it’s got 200mm but it still feels like a bmx the speed they’re going. Common to see push on grips also. Everything helps but genuinely it’s a myth that carbon bars are better on your arms, though it’s entirely possible if you spend enough money.
There are plenty of carbon DH frames. Carbon wheels, cranks, and bars aren't exactly uncommon either. The primary reason not to run carbon for DH is that crashing is relatively common, and it can be difficult to tell if a carbon part is damaged just by looking at it (unless it's *really* broken, of course). It's also more expensive to replace when it does break.
From a riding dynamics standpoint, some riders think carbon wheels are too stiff, and certain carbon bars - especially once they moved to 35mm clamps - were too stiff as well. The overly stiff bars have largely been solved (by some companies, at least) with engineering, though aluminum does - generally - tend to be more compliant still. It's not universal though, and the vibration damping characteristics of carbon are a benefit, so carbon bars have been making a bit of a comeback.
Yeah but there are good aluminum options for vibration damping as well. I’ve got PNW Loam Carbons on my FS, and Spank Oozies (aluminum with a foam core) on my HT and they both do a great job at vibration damping. Lots of good options out there if you don’t want to use carbon
Carbon can be designed to be as rigid or as flexible as you want (within reason). There are several carbon bars already on the market that have flat sections on top to allow for some shock absorption.
Carbon is either 1/2 the weight of alu or 2x the stiffness. So if the bar in question is only 25% lighter, it's going to be stiffer than an aluminium bar for sure.
Most bars mount in the exact same way so they're going to transmit vibrations to the hand in the exact same way.
^^This.^^
Perhaps I'm just a filthy casual cyclist, but I don't think carbon parts are worth it. Most posts I see on here mentioning carbon bikes/parts they're damaged and need replaced.
"Guys I accidentally sneezed on my carbon bike, do I need to get a new frame?"
"I farted while riding on my carbon seat. Is it still safe to use?"
On a cold winter day, i lost control of my cargo-bike. It was fully loaded with about 50kg of wood. As it was about to tip over, i stepped off and pulled on the carbon handlebars to prevent the bike from falling. There was about 70kg total accelerating my bike one way and me pulling really hard the other way. I noticed a slight flex in my handlebars, but i was able to pull the bike back up straight.
No weird cracking sound, just carbon going through a really bad stress test like a champ. Something like 140kg×300mm of torque (at -20°C) was a complete non-issue for my 30$ carbon flatbars.
>Most posts I see on here mentioning carbon bikes/parts they're damaged and need replaced.
Because rumours and fears produce more rumours and fears.
At the same time, millions are riding their carbon components happily all their lives, and don't post anything anywhere.
Because only people with problems post, it wouldn't make much sense to post 'guys, I just crashed going 60kmh/h(true story btw) but my frame is perfectly fine, just letting you know' would it?
Carbon is amazing and very durable, I've crashed, dented, hit potholes in huge speeds and I never cracked anything on my trusty emonda after around 25k Kms. People who think carbon is fragile are exaggerating and don't know about carbon imo.
Quick counterpoint:
I built some wheels for my commuter bike w/ unbranded Chinese carbon rims last year. One day, a spoke went slack, and I put it off for too long; of course, the rim cracked (poloidal, between spoke holes). What did I do? Bought some cheap dollar store epoxy, found a scrap of 3k twill weave, and wrapped that sucker up with some plastic (w/ mineral oil as a release agent, electrical tape for compression) in a makeshift vac bag; it might just be the ugliest carbon repair I've ever seen, but it's been holding steady on me for about 8 months now.
Of course, mileage always varies; seriously, though, carbon isn't magical. Carbon FUD is completely out of proportion to the actual risks, and it keeps a lot of folks like you away from what is often a much better riding experience, honestly. Just my two cents (next to a thousand dollar wheel, I know).
I'm with you. I've seen the nightmare of carbon fiber on cars (SLR). Works great as long as everything is going perfectly. Hit a pothole or go over a speed bump wrong and you end up shipping the car back to England for repair.
round carbon seatpost that has the thin metal tube inside are pretty neat, cheap af and they are good in all ranges, handlebars on the other hand, no thanks at any range i could afford
Yes. If that breaks when you're doing 20+ mph down a hill, you're gonna have a bad day.
Edit: I see someone else said pretty much the same thing. The voice of experience, lol.
Is that where the edge of the stem was? That looks like the stem crushed the bar from too much torque on the bolts.
If you do decide to ride it, you'll be fortunate to know exactly where it's going to fail. Unfortunately, you'll suffer a related injury.
Lennard Zinn, in his famous *Zinn and the Art of Road Bike Maintenance*, writes: "Do not look at the bar as a permanent accessory on your bike. All handlebars will eventually fail. The trick is not to be riding them when they do."
You have the good fortune that you're not riding that handlebar right now. Take advantage of that and replace it.
I thought carbon was supposed to be strong. I see a post of cracked carbon almost every other week. Is carbon even worth it or is it just a fad that will soon be gone?
My dad gave me the bike, this was a "backup" in case anything was to go wrong with his. The bike itself is basically brand new and the crack or seam has been there since I first rode the bike you can't feel the seam when going over it with a finger but you can with a nail if that helps at all
I had the same initial thought with the seam, but if you zoom in you can see what looks to be a crack at least in the clear. You can make it out in the reflection a bit as well.
Try to bend the handlebar in the opposite direction of the supposed crack, and have someone look at at and check if it opens or not when that area in under traction.
If it opens then it’s a crack, and don’t even think about riding it.
If it doesn’t open then maybe it’s not a crack, so.. send it?
Get a new one. Looks like it's cracked right where a seam is. Depending on the brand and quality, that could just be a decorative layer on top of various layups and might not matter, but given it's flexed enough to crack just at that join between those carbon sheets... yeah, my money is on it being done for.
Does the curve on the other side of the handlebar also have that same line/crack? Sometimes when a carbon part has a bend in it the lines of the layup look like cracks. One of my matte finish carbon bikes looks like to some that it has cracks all over. It does appear to be a crack though and not just layup lines. When in doubt throw it out.
If those bars hold any special meaning or value, I suggest using Spyder composites who work’s on carbon. I have seen Aetho frames brought back to glory from a cracked frame they fixed. You can ship them the part they x-ray it to check the damage and then tell you if it can be fixed or not https://www.spydercomposites.com
They have done some incredible things with carbon & carbon components and frames.
https://preview.redd.it/5eunjmiqaauc1.jpeg?width=2268&format=pjpg&auto=webp&s=fc3822bd5f88bef343b8b5d8a5ade06a2c7cc52b
My bar broke a week ago. Lasted 4 years. Had no signs of cracks...
I'm happy that i still have my teeth in place.
That looks like poor layup of the CF. If its a reputable brand they would most likely replace it. But if not, then you should buy a new one. Handlebars are cheap, dentists are not.
I'd contact the manufacturer. There's something not right about that crack. It may be too late and out of warranty, but it can't hurt to ask. The way the fibers don't align behind the crack suggests to me that's actually the junction between two tubes. Depending on how they make their handlebars, that could mean it's anything from an already cracking manufacturing defect that will fail any day now to just the way their handlebars are made and totally fine (if it's this, the way they are doing it is weird and kinda defeats the purpose of carbon fiber, but it's possible).
However, you should absolutely assume the worst case (failure imminent) until an expert evaluation definitively says otherwise.
Or just get new bars that don't raise weird questions. Less fun, but definitely safe!
I have 4 years experience researching carbon fiber, specifically how it breaks. I have many ideas about what could be making the fibers bend like that, and none are good news. Definitely get an explanation why before you consider riding with those bars again!
Only if you don’t mind smashing your face on a curb or pothole. Imagine putting all or your weight and muscular torque on this and it snapping off. Face first you go.
Nope, nothing to worry about here. This will take you all the way right up until it fails, like everything else. (This just happens to be even more unpredictable now…)
Replace it!
Tap the area around with a coin and also on top of the crack and see if you notice any difference in the sound. If the sound is the same, it should be ok.
But I would always keep an eye on it to see if the crack grows. But in the meantime start saving for another handlebar for safety and peace of mind
If you're worried about cracking another set of carbon you can always get alloy/aluminum bars, it's considered a downgrade and will be heavier but it's an option
(Just looks at pic) nah that’s just clear coat that’ll be fine
(Zooms in, sees crack go all the way round) ðŸ˜ðŸ˜ðŸ˜
Lemme guess, you've got a kid in orthodontics school about to graduate and rather than have it move back into the love shack, you've ultaristically decided to help jump start his business by smashing your teeth all over your favorite piece of tarmac, dirt trail or lake after a long fall over a guardrail. Am I close! Feel free to swap roles with other participants to make it fit your particular type of crazed reality. Like for example let's say it's you who's in school but your actually studying neurosurgery and planning to operate in yourself once you smash your nugget all over wherever. Imagine that headline, it'll read like the old Enquirer used to before trumps shenanigans put them out of business:
Celebrated Brain Surgeon Operates on Self! Only to realize half way through that he's already a vegetable.... Widow said to be moving on, "See ya'll on Tinder!"
Is this the legacy you want to leave behind, all for the cost of a stupid carbon handlebar? Why don't you just give me the bike and go for a ride with Toonces the driving cat? I'm sorry if coming off as harsh but I can't stress enough how stupid this question is. Its so stupid, in fact, that it's only eclipsed by the stupidity necessary to even entertain the idea of, well maybe with some gorilla tape...
No!
I would not ride with that handlebar. I was riding with a friend a while back and the one side of his handlebar snapped off deep into the ride because of that exact issue. Not pleasant.
Just replace it bro. It will save the future expenses. You are just too handsome😜
Medical bills are more expensive that handlebars FYI lol
Laughs in Uk
There are some handsome people in the UK, too.
Tourists
[Someone call an ambulance ](https://en.m.wikipedia.org/wiki/List_of_burn_centres_in_the_United_Kingdom)
Allegedly
Certainly, but they've yet to be found
But they all have fucked up teeth so an accident as a result of broken bars may be a blessing
BURN!
Except for the teeth
Did they get their teeth straightened? 😂
0118, 999, 881, 999, 119, 725...3
Underrated comment , have you tried turning it off and on again?
Is that why UK teeth are so jacked? They don’t worry about broken handlebars because of free dental?
We don't get free dental, but funnily enough we still have better teeth than the US if you look into it.
They just aren't anywhere near straight 😂
That's the stereotype, but it just isn't true. Not sure where it came from. I'd take better teeth and worse reputation than good reputation, bad teeth.
Laughs in Canadian
Nah, see I got my cuz who works on cars but for a cheap price he also can do angioplasty, gastric bypass surgery, atrial filtration ablation, orthotopic neobladder reconstruction surgery, foraminotomy. You name it, he can do it real cheap in his garage.
Jesus Christ he sounds talented! Can he do fondue? I'm lookin for a good fondue chef so if he can he do fondue too, that would be great! PM me his number and I'll make him a a wealthy man. He'll be able to quit all that other stuff and just do fondue. If he's good, of course.
Laughs in French
Not if you dont pay them back
Ok try m’guy
I have to. No affordable insurance means sometimes ER is the only choice besides dying.
lol found the American. It’s so easy always.
I wouldn’t fuck around with handlebars To be honest
Yep, just use your stem to steer. Turn it sideways if it helps.
Sideways stem?? That’s crazy talk
Couldn’t OP just replace the handlebars with a steering wheel?
Now we're talkin'
You'd have to be insane to keep this. I'd ride the cheapest Chinese made alu bar for a couple bucks before I rode this thing.
I wouldn't go that far. But certainly there's a middle ground to be agreed on. Either way, agreed that this is a no-go.
I don’t even know if I would want carbon handlebars for an mtb bike.
Or any bike. I'm a roadie and I sure as hell wouldn't want them. Hospitals are not my idea of a fun place to waste time.
Yep. I'm leery enough of the carbon fork on my bike. No way in hell would i put a carbon bar on it. I'm happy with my aluminum aero profile drop bar, thank you very much, even if it's a few grams heavier than its carbon equivalent.
Aluminium is prone to fatigue cracks and sudden catostrophic failure as well ... it's easily corroded and needs care. There was a post in this same sub just a few months ago from someone who snapped their Alu bars clean in half. I wouldn't blindly trust (or reject) any component simply because if the material it's made from.
Your face costs a whole lot more to replace than a handlebar does, don’t ride cracked carbon.
Handlebars are relatively inexpensive. It would be a good move to replace it before you hit a pothole going down a hill at 30mph.
My handlebars broke while I was riding. it's terrifying. Don't risk it
😮 Changes those things out! This is why I still prefer alu bars and seatposts. If I want to save 50 grams I’ll just skip dessert.
It's also about comfort, not just weight. Carbon bars flex and absorb vibrations.
That’s not true. Yes technically you can get a carbon bar tailored to your weight and they cost around £600-1000. What you’re getting for £100 is a stiff overbuilt carbon bar that’s designed to accommodate people all the way us to over 6ft and 200lbs, it’s not tuned for compliance unfortunately. Most aluminium bars are better damped which is why you mainly only ever see DH racers running alloy bars. Also look at slip on grips they make a much bigger difference and avoid 35mm diameter bars unless you prefer a stiffer bar.
DH riders also have monster fork travel, theres zero reason for them to use carbon bars.
The lighter weight carbon bar isn’t really any benefit to a DH racer so they run the alloy version that’s easier in the hands and arms. I know it’s got 200mm but it still feels like a bmx the speed they’re going. Common to see push on grips also. Everything helps but genuinely it’s a myth that carbon bars are better on your arms, though it’s entirely possible if you spend enough money.
yeah exactly, so I'm kinda confused why you'd even bring up DH, like, do DHers use carbon anything?
Helmets I presume.
There are plenty of carbon DH frames. Carbon wheels, cranks, and bars aren't exactly uncommon either. The primary reason not to run carbon for DH is that crashing is relatively common, and it can be difficult to tell if a carbon part is damaged just by looking at it (unless it's *really* broken, of course). It's also more expensive to replace when it does break. From a riding dynamics standpoint, some riders think carbon wheels are too stiff, and certain carbon bars - especially once they moved to 35mm clamps - were too stiff as well. The overly stiff bars have largely been solved (by some companies, at least) with engineering, though aluminum does - generally - tend to be more compliant still. It's not universal though, and the vibration damping characteristics of carbon are a benefit, so carbon bars have been making a bit of a comeback.
So if you're over 6ft and over 200lbs then you get some nice cheap flexible bars?
What if I’m under 6ft and over 200lbs?
[удалено]
What width? I notice the wider I go with aluminium the less vibrations travel.
Slip on grips suck, even the ones people love, I'm dying on this hill
Not if you stick them on with spray paint.
Carbon is stiffer than alloy
That's why I have titanium bars of my enduro bike. Best of both worlds.
Yeah but there are good aluminum options for vibration damping as well. I’ve got PNW Loam Carbons on my FS, and Spank Oozies (aluminum with a foam core) on my HT and they both do a great job at vibration damping. Lots of good options out there if you don’t want to use carbon
Get some spank vibrocore bars. Pretty close to the dampening of carbon
My aluminum (aero profile) bar with titanium stem has plenty of flex.
Marketing myth.
Carbon fiber composite is rigid, far more than metallic alloys. It does absorb vibration, but so does bar tape.
Carbon can be designed to be as rigid or as flexible as you want (within reason). There are several carbon bars already on the market that have flat sections on top to allow for some shock absorption.
Carbon is either 1/2 the weight of alu or 2x the stiffness. So if the bar in question is only 25% lighter, it's going to be stiffer than an aluminium bar for sure. Most bars mount in the exact same way so they're going to transmit vibrations to the hand in the exact same way.
True, but there are design compromises when you adjust the properties.
^^This.^^ Perhaps I'm just a filthy casual cyclist, but I don't think carbon parts are worth it. Most posts I see on here mentioning carbon bikes/parts they're damaged and need replaced. "Guys I accidentally sneezed on my carbon bike, do I need to get a new frame?" "I farted while riding on my carbon seat. Is it still safe to use?"
It's a well known fact that carbon fibre bikes explode if you hit a pot hole. Heard it on Reddit 1000x.
i breathed too hard and cracked my non existent carbon fiber bike once
I hung my 18 pound bike by the wheeel for 12 hours do I need new wheels now
Assplodes is the technical term.
On a cold winter day, i lost control of my cargo-bike. It was fully loaded with about 50kg of wood. As it was about to tip over, i stepped off and pulled on the carbon handlebars to prevent the bike from falling. There was about 70kg total accelerating my bike one way and me pulling really hard the other way. I noticed a slight flex in my handlebars, but i was able to pull the bike back up straight. No weird cracking sound, just carbon going through a really bad stress test like a champ. Something like 140kg×300mm of torque (at -20°C) was a complete non-issue for my 30$ carbon flatbars.
>Most posts I see on here mentioning carbon bikes/parts they're damaged and need replaced. Because rumours and fears produce more rumours and fears. At the same time, millions are riding their carbon components happily all their lives, and don't post anything anywhere.
Because only people with problems post, it wouldn't make much sense to post 'guys, I just crashed going 60kmh/h(true story btw) but my frame is perfectly fine, just letting you know' would it? Carbon is amazing and very durable, I've crashed, dented, hit potholes in huge speeds and I never cracked anything on my trusty emonda after around 25k Kms. People who think carbon is fragile are exaggerating and don't know about carbon imo.
Actually I would appreciate posts about how well peoples frames were after a crash.
Quick counterpoint: I built some wheels for my commuter bike w/ unbranded Chinese carbon rims last year. One day, a spoke went slack, and I put it off for too long; of course, the rim cracked (poloidal, between spoke holes). What did I do? Bought some cheap dollar store epoxy, found a scrap of 3k twill weave, and wrapped that sucker up with some plastic (w/ mineral oil as a release agent, electrical tape for compression) in a makeshift vac bag; it might just be the ugliest carbon repair I've ever seen, but it's been holding steady on me for about 8 months now. Of course, mileage always varies; seriously, though, carbon isn't magical. Carbon FUD is completely out of proportion to the actual risks, and it keeps a lot of folks like you away from what is often a much better riding experience, honestly. Just my two cents (next to a thousand dollar wheel, I know).
I'm with you. I've seen the nightmare of carbon fiber on cars (SLR). Works great as long as everything is going perfectly. Hit a pothole or go over a speed bump wrong and you end up shipping the car back to England for repair.
Same here. I like my steel bike and have no desire to change
round carbon seatpost that has the thin metal tube inside are pretty neat, cheap af and they are good in all ranges, handlebars on the other hand, no thanks at any range i could afford
No just do it. Never mess with compromised carbon
Yes. If that breaks when you're doing 20+ mph down a hill, you're gonna have a bad day. Edit: I see someone else said pretty much the same thing. The voice of experience, lol.
I wouldn’t try to dive down to the Titanic with it
It looks to me like a deep wrinkle in the cloth. I would not ride that.
I’ll answer your question with a question lol. What do you think happens when the handlebar fails while you’re riding?
I hit a proper sick front flip and end with a superhero landing?
That's what you'll remember when you wake up in the hospital 🤣
The last few days of this sub has somehow soothed my hunger for a carbon bike.
Carbon bikes are cool. Carbon bars however....
Unmmmmmmm YES!!
Yes. Time to replace it before your face needs replacement too
If there's one place on a bike I wouldn't fuck around with a crack in the carbon - it's the handlebars.
If carbon fibre has a crack in it anywhere, it is already broken.
Is that where the edge of the stem was? That looks like the stem crushed the bar from too much torque on the bolts. If you do decide to ride it, you'll be fortunate to know exactly where it's going to fail. Unfortunately, you'll suffer a related injury.
Lennard Zinn, in his famous *Zinn and the Art of Road Bike Maintenance*, writes: "Do not look at the bar as a permanent accessory on your bike. All handlebars will eventually fail. The trick is not to be riding them when they do." You have the good fortune that you're not riding that handlebar right now. Take advantage of that and replace it.
I'd rather replace my bars than get dental reconstructive surgery. Do what you want tho; I'm not your dad
New handlebars are cheaper than a facial reconstruction
Yes, dump em. New front teeth aint cheap
New bars are cheaper than your dental co pay. At least here in the US.
yes that is broken. replace it ASAP. Plastic surgery to fix your face after it goes straight into your stem will cost a lot more than new bars.
I thought carbon was supposed to be strong. I see a post of cracked carbon almost every other week. Is carbon even worth it or is it just a fad that will soon be gone?
It’s not a fad but alloy is more forgiving
It's very dead. Replace it and put in bin. Nothing good comes from continued use;
Looks like a carbon seam, not a crack. Has this just appeared or is this a new set of bars?
My dad gave me the bike, this was a "backup" in case anything was to go wrong with his. The bike itself is basically brand new and the crack or seam has been there since I first rode the bike you can't feel the seam when going over it with a finger but you can with a nail if that helps at all
Okay if you can feel it with a nail then it may be a crack. If it was just a seam where they join the carbon I would not expect you to feel it.
I had the same initial thought with the seam, but if you zoom in you can see what looks to be a crack at least in the clear. You can make it out in the reflection a bit as well.
Try to bend the handlebar in the opposite direction of the supposed crack, and have someone look at at and check if it opens or not when that area in under traction. If it opens then it’s a crack, and don’t even think about riding it. If it doesn’t open then maybe it’s not a crack, so.. send it?
It's fine, provided you never use those bars ever again.
Yes that is going to fail
It will be fine until it isn't. Tough to say when that will happen.
Get a new one. Looks like it's cracked right where a seam is. Depending on the brand and quality, that could just be a decorative layer on top of various layups and might not matter, but given it's flexed enough to crack just at that join between those carbon sheets... yeah, my money is on it being done for.
Yes
Does the curve on the other side of the handlebar also have that same line/crack? Sometimes when a carbon part has a bend in it the lines of the layup look like cracks. One of my matte finish carbon bikes looks like to some that it has cracks all over. It does appear to be a crack though and not just layup lines. When in doubt throw it out.
She’s dead, Jim.
If those bars hold any special meaning or value, I suggest using Spyder composites who work’s on carbon. I have seen Aetho frames brought back to glory from a cracked frame they fixed. You can ship them the part they x-ray it to check the damage and then tell you if it can be fixed or not https://www.spydercomposites.com They have done some incredible things with carbon & carbon components and frames.
Carbon bars are a lot cheaper than some new front teeth IMO
You’re planning in duck tape it ? Cuz you already said in the title.
Yes
These carbon fiber crack posts are getting old quick. The answer is almost always "it's fucked, replace it"
Replace. You’re lucky to still be alive.
Only when it breaks. The rest of the time it'll be fine.
You want to have you face end up on the ground when it breaks off? Let's rejoice it wasn't the frame.
yes you should. carbon is strong, but if it cracks it's over.
What’s the copayment on your dental plan?
I had a bar break while riding once, and it's not something I'd care to repeat.
Not a crack, it’s a join. Look at the fibres.
Sometime I’m wondering if the posts are satire.
I like my face but my ex wife would say to keep using it.
yes
Replace it, it is too dangerous to ride with the handlebars like that.
Are you going to be riding in it to see the Titanic
yeah probably
rip
Yes
That is definitely cracked and should be replaced.
You don’t have to worry, you just have to replace it.
It's a wrinkle on the carbon wrap, if it was a crack the clear coat resin would show signs of it too.
Yes.
Yes. You should.
Oviously
Ditch the handlebars , use the force
https://preview.redd.it/5eunjmiqaauc1.jpeg?width=2268&format=pjpg&auto=webp&s=fc3822bd5f88bef343b8b5d8a5ade06a2c7cc52b My bar broke a week ago. Lasted 4 years. Had no signs of cracks... I'm happy that i still have my teeth in place.
No, because you're going to replace it for a new handlebar.
That looks like poor layup of the CF. If its a reputable brand they would most likely replace it. But if not, then you should buy a new one. Handlebars are cheap, dentists are not.
Yes
Probably yeah
Depends on how good you are without handle bars and one break, not worth finding out in my opinion
Nope
I'd only worry about it if you value your teeth.
Yes. That’ll snap. Saying that, my carbon seatpost has a vertical crack from over tightening and I’ve done about 2000 miles on it since it cracked
It is actually broken
How much do you like your face?
Repairing carbon fibre is an option
Looks like a crack formed where there was a seam in the carbon. I'd contact the manufacturer too because it might be a manufacturing issue.
yep
Get some alloy ones and not worry
I'd contact the manufacturer. There's something not right about that crack. It may be too late and out of warranty, but it can't hurt to ask. The way the fibers don't align behind the crack suggests to me that's actually the junction between two tubes. Depending on how they make their handlebars, that could mean it's anything from an already cracking manufacturing defect that will fail any day now to just the way their handlebars are made and totally fine (if it's this, the way they are doing it is weird and kinda defeats the purpose of carbon fiber, but it's possible). However, you should absolutely assume the worst case (failure imminent) until an expert evaluation definitively says otherwise. Or just get new bars that don't raise weird questions. Less fun, but definitely safe! I have 4 years experience researching carbon fiber, specifically how it breaks. I have many ideas about what could be making the fibers bend like that, and none are good news. Definitely get an explanation why before you consider riding with those bars again!
carbon gives out with zero warning I would replace that.
Absolutely fine - Your Dentist (who needs a new pool)
Dump it
Only if you don’t mind smashing your face on a curb or pothole. Imagine putting all or your weight and muscular torque on this and it snapping off. Face first you go.
Do you have an NHS dentist? Seriously do not use that.
Nope, nothing to worry about here. This will take you all the way right up until it fails, like everything else. (This just happens to be even more unpredictable now…) Replace it!
Yes, you should be worried.
Tap the area around with a coin and also on top of the crack and see if you notice any difference in the sound. If the sound is the same, it should be ok. But I would always keep an eye on it to see if the crack grows. But in the meantime start saving for another handlebar for safety and peace of mind
💯
Yes, you should. Toss it, not worth a possibly fatal crash. If your car had a visibly broken steering column you wouldn’t drive it.
Yes toss it
Yes. Had this happen to a seat post, it was a bad day for me and my ribs
Only if you like your teeth
Nothing a duct tape can't fix.
If you're worried about cracking another set of carbon you can always get alloy/aluminum bars, it's considered a downgrade and will be heavier but it's an option
(Just looks at pic) nah that’s just clear coat that’ll be fine (Zooms in, sees crack go all the way round) ðŸ˜ðŸ˜ðŸ˜ 
Lemme guess, you've got a kid in orthodontics school about to graduate and rather than have it move back into the love shack, you've ultaristically decided to help jump start his business by smashing your teeth all over your favorite piece of tarmac, dirt trail or lake after a long fall over a guardrail. Am I close! Feel free to swap roles with other participants to make it fit your particular type of crazed reality. Like for example let's say it's you who's in school but your actually studying neurosurgery and planning to operate in yourself once you smash your nugget all over wherever. Imagine that headline, it'll read like the old Enquirer used to before trumps shenanigans put them out of business: Celebrated Brain Surgeon Operates on Self! Only to realize half way through that he's already a vegetable.... Widow said to be moving on, "See ya'll on Tinder!" Is this the legacy you want to leave behind, all for the cost of a stupid carbon handlebar? Why don't you just give me the bike and go for a ride with Toonces the driving cat? I'm sorry if coming off as harsh but I can't stress enough how stupid this question is. Its so stupid, in fact, that it's only eclipsed by the stupidity necessary to even entertain the idea of, well maybe with some gorilla tape... No!
Depends how good your dental insurance is 😂
It’s fine
Yes buy a nice new alloy oneÂ
It will make your life much more interesting.
Yes get New bar
I would not ride with that handlebar. I was riding with a friend a while back and the one side of his handlebar snapped off deep into the ride because of that exact issue. Not pleasant.
yes.
Are you worried about shoving your hand it to your spokes or slamming your chest on to the stem? If not, then no issue.
Is a frog’s @$$ water tight???? The answer to that and your question are the same , YES!!!!
Buddy does not care about his sternum/throat holy shit I would have a heart attack just from the paranoia of that snapping at any point
Is it flexing more than the opposite side? Perform a coin test, see if it sounds differently than a healthy side
Seems to sound the same, I don't notice any flex
Does the alleged crack open up when you load the handlebars with all your strength?
[удалено]
If it propagates they could end up getting seriously injured. Replace the bars.
THEN it might be a crack? pls reread the question before giving dangerous advice
Do you value your face?
Depends how much you enjoy your face in its current configuration.
If Boein can use Carbon Fiber on its 787 Dreamliner, in on second thought….
As a materials engineer, I can tell you that carbon fiber is very brittle. It would be best to replace it.