@@mattjns I agree even though my last 2 MTBs have been carbon and I haven’t had a problem with them. I don’t know if it’s just because I read into it too much and I’m paranoid, but there’s always that inkling that it might catastrophically explode.
Agreed, unless you're racing and you really need the reduction in weight, carbon frames don't make sense to me. You usually get better parts on an Alloy frame for a cheaper price.
An interesting question. I imagine the failure would have occurred at the headtube, and would think it wouldn't have lasted as long, but yea, would be interesting to know. I bet they tried it out! - Dan P.
In my years of racing BMX, I watched steer tubes (head tubes) snap off of early 80s and 90s aluminum BMX frames. No warning. No visible cracking or deformation before failure. I've seen riders eat shit hard. They still had their hands on the bars with a bewildered look on their faces. The look of "wtf?" I stay with good old fashioned chromoly frames. If they have been compromised, you always find a crack developing somewhere. And they're usualy found at a weld. So You retire the frame for a new one. No horrifying accidents. Chromoly talks to you. Another horrifying unannounced fracture that can catch you off guard are peddle axle shafts!😵
The stress shown from this test is clear!! Forward pressure "novice as i am", would duplicate everyday torques. No? Edit: After my third viewing i understand that the weight of the rider being absorbed would absolutely show a weakness. Ty for the education.
yeah exactly, it can handle anything you throw at it, but they only make polymer bikes now cus they charge you 8 grand these days... there is a culture in corporations where they raise the standard and stop providing any option for basic things that are less expensive in price and maintenance. manual transmissions, roll down windows, no cameras on my car, aluminum frames, steel frames etc etc.
I got 147k on my last alloy trail bike and over 200k on my steel enduro. I have had to fix the steel bike though after my first ride and around 80k but I'm a welder so it was no problem
Watched someone snap a headtube off a redline dirt jump bike on a jump. Iit was a recnetly released model so maybe not enough testing before they started manufacturing it and i remember they ended up being recalled i believe.
Why would it? Because welded aluminum has 50+ % less strength once welded compared to base metal (exact loss depends on grade of aluminum, and type of weld). They overbuild the welded areas on bikes for a reason.
They were talking about around 4000-4500N which would be around 408- 459kg or 900-1010lbs (in its weakest direction due to the angle) of force at what looks to be the axels location, creating a massive amount of torque at the headtube. A frok lengths axle to crown (140mm of travel) is around the 0.550 m with a force of 4000N would create 2200 Nm of torque, which is a lot. For reference an e-bike motor would put out around 80 to 90 Nm max for a high end powerful model.
@@prawnis nah, I think you need to grow up because you don't seem to be mentally capable of telling the difference between what is a joke and what is not a joke
I like less spectacular. I still prefer alloy over carbon frames.
Totally. I think Aluminium is just the ideal material for mtbs.
@@mattjns I agree even though my last 2 MTBs have been carbon and I haven’t had a problem with them. I don’t know if it’s just because I read into it too much and I’m paranoid, but there’s always that inkling that it might catastrophically explode.
Agreed, unless you're racing and you really need the reduction in weight, carbon frames don't make sense to me. You usually get better parts on an Alloy frame for a cheaper price.
@@blairlohnes8103 And the bike will last MUCH longer.
Carbon hasn’t come far enough for me to have any interest in it. Way too easy to damage for just saving a couple lbs.
Got my first Rocky Mountain aluminum frame bike in 1987...still have it.... still ride it. Carbon is for pros and suckers 😅
I wonder how much more (or less) it would have gone without the shock mount cross member.
An interesting question. I imagine the failure would have occurred at the headtube, and would think it wouldn't have lasted as long, but yea, would be interesting to know. I bet they tried it out!
- Dan P.
Wish I read this before I wrote mine .. thinking the same thing 😮😅
In my years of racing BMX, I watched steer tubes (head tubes) snap off of early 80s and 90s aluminum BMX frames. No warning. No visible cracking or deformation before failure. I've seen riders eat shit hard. They still had their hands on the bars with a bewildered look on their faces. The look of "wtf?"
I stay with good old fashioned chromoly frames. If they have been compromised, you always find a crack developing somewhere. And they're usualy found at a weld. So You retire the frame for a new one. No horrifying accidents. Chromoly talks to you.
Another horrifying unannounced fracture that can catch you off guard are peddle axle shafts!😵
Yeah aluminum is hard to weld
The stress shown from this test is clear!!
Forward pressure "novice as i am", would duplicate everyday torques. No?
Edit: After my third viewing i understand that the weight of the rider being absorbed would absolutely show a weakness. Ty for the education.
Could you weld the crack and let us compare the tests please 🙏
Do you hear him, submarine builders????
The sub failed in a complete different failure mode
yeah exactly, it can handle anything you throw at it, but they only make polymer bikes now cus they charge you 8 grand these days... there is a culture in corporations where they raise the standard and stop providing any option for basic things that are less expensive in price and maintenance. manual transmissions, roll down windows, no cameras on my car, aluminum frames, steel frames etc etc.
I've ripped off 3 head tubes on bikes in the last 2 years, let me test it 😂
You must be a lawyer by now managing all kind of cases 😂
Casing at the top of every obstacle usually works.😊
My next bike will have a steel frame. I hope I can get 100k kilometers on it.
I got 147k on my last alloy trail bike and over 200k on my steel enduro. I have had to fix the steel bike though after my first ride and around 80k but I'm a welder so it was no problem
From experience failure occurs as an instant impact and less a slow gradual pressure.
Could you imagine if we fell in slow-mo? 😅
Carbon will never get a cent from me.
Aluminum or Steel.
I don't care about saving weight.
I care about saving money.
Yeah but with the back shock on wouldn't that make it stronger ?
2018 carbon slayer owner , 2nd frame ...
That's great for brittle failure, but what about ductile and fatigue failure!?
That’s ductile
I am confident that I can throw my alloy Kona of a cliff and it will still be OK. I don't think the same will happen with a Carbon frame.
4000 newtons is about 900 lbs
Not as much as I'd expect tbh, I guess it all depends how it is applied
Wtf?! I thought a newton was a lot more, I’m thinking of a kilo newton
Watched someone snap a headtube off a redline dirt jump bike on a jump. Iit was a recnetly released model so maybe not enough testing before they started manufacturing it and i remember they ended up being recalled i believe.
Why would it break at the heat affected zone of the weld?
Why would it? Because welded aluminum has 50+ % less strength once welded compared to base metal (exact loss depends on grade of aluminum, and type of weld). They overbuild the welded areas on bikes for a reason.
Watch the whole video here: th-cam.com/video/AMgLJgMJzTQ/w-d-xo.html
No I didn’t. You threw a machine at it and it didn’t survive. A machine falls into the anything category
bruh is making it way too much of a big deal
2000 to 4000 N doesn't seem like a lot of force to break a frame...
They were talking about around 4000-4500N which would be around 408- 459kg or 900-1010lbs (in its weakest direction due to the angle) of force at what looks to be the axels location, creating a massive amount of torque at the headtube. A frok lengths axle to crown (140mm of travel) is around the 0.550 m with a force of 4000N would create 2200 Nm of torque, which is a lot. For reference an e-bike motor would put out around 80 to 90 Nm max for a high end powerful model.
Hello Jürgen Klopp
Alloy stand alone as the strongest material for a bike lightweight yet strong you can fly 100ft alloy frame won't break
Sir can you give me a mtb
guess what no one cares stop begging
@@prawnis don't be a poopy head
@@IZD3d grow up
@@prawnis nah, I think you need to grow up because you don't seem to be mentally capable of telling the difference between what is a joke and what is not a joke
Please sir I want a mtb give me one
Get your own one
@@andrewwalton6545 well if I could afford one, I would
@@Idkwho533 work harder
@@andrewwalton6545 don't give up. I got my first house by asking for it in TH-cam comments.
@@andrewwalton6545 i am unemployed brother