*whistles tune* *SNAP* ACK!

>>2032741 (OP)
Aluminum has a fatigue life.
Crashing can break things.
not my problem(right now)

>>2032741 (OP)
dumb fuck clearly overtightened it
there's a reason you're supposed to use torque wrenches

>>2032741 (OP)
You looked at it wrong, didn't you? Should have shown deference.

>>2032741 (OP)
damn, so this happens to aluminium too? i put my stem bolts on pretty tight, should i get a torque wrench and redo my bolts or is it too late? or get a titanium bar?

>>2032760
every 2-3 years of regular use swap alu bars or risk it. I'm convinced to get steel bars next year

yes, yes, you should buy new bars every 2 years and new frame every 36 months!!

>>2032764
not if it's steel but hey I would rather keep my teeth
https://www.youtube.com/watch?v=l0SwNvdv198

>>2032760
I've never had any failure from aluminum bars, or any aluminum part

>>2032741 (OP)
https://vocaroo.com/1aAH0WB8JEAU

>>2032741 (OP)
>front wheel gone
>big scrapes on the *top* of the front light and hood
Yes, definitely a fatigue issue here.

https://old.reddit.com/r/bikewrench/comments/1idulsi/handlebar_snap_causes/
>ten years old
>been creaking for two months
>iT JuST suDDenLy SnAPPeD WiThouT WaRNinG!!!1

>>2032812
accurate

>>2032812
kek, I love it

"carbon" isn't actually carbon. It's mostly plastic

>>2033434

>>2032854
>ten years old
>implying that's a lot

This is why garbon will never touch my bike.

>>2032741 (OP)
>ACK!
Kid word.

>>2032741 (OP)
That tube looks as thin as tinfoil. People buying ultra-light bike components from out of chinesium are just retarded.
Won't happen with a normal aluminum handlebar or a high quality carbon one.

>>2034622
TCP is 51 years old. The day of the pillow is near for you. :D

>>2032741 (OP)
>aluminum
no fatigue limit, ANY stress no matter how small will push it further to the point of ultimate failure

seriously, what did you expect?

Anything can break
This topic is autistic

>>2034702
steel don't suddenly kill you tho, you little retard

>>2034644
honestly who the fuck runs steel bars and stem?

even nitto who stress test all of their items to the point of failure say the cromo items also fail eventually

https://youtu.be/XYIV6O6tOvY?t=61

>>2034833
My chrome moly bike is 35 years old and still as good as the day it was made. Aluminum is shit.

>>2034834
It either
>has a bunch of aluminium components including the one we're talking about
>is very low end and sucks
>is decked out in incredibly expensive hipster garbage components

not sure which is worse

>>2034836
None of the above.

>>2034838
lets see a pic steelbro

>>2034839
don't got one, deal with it. It was a very nice bike when it was new and it has been in my family maintained in good condition ever since. the most it has ever been altered is being stripped and powder coated.

>>2034840
>very nice bike when new
>steel handlebars
>steel seatpost
>steel cranks
>steel rims
>steel hubs

doubt

>>2034841
early 90s schwinn crisscross. pic related is not my bike but seems to be virtually identical. mine is in nicer condition though

>>2034843
yeah those 700c schwinn cromo hybrids are pretty nice

i restored a crosscut a while ago which is the higher spec one

you would be surprised how much more comfortable a nice allum seatpost makes the ride. And allum bars can drop several hundred grams weight, ones without rise are basically free giveaway parts too. Aside from the insanely light ones, it's really not something that breaks either, they still do just bend if you crash them.
Those steel parts are purely cost cutting.

keep the stem cos the cable stop is cool
Those riveted cranks are also extremely heavy, you can easily drop weight there too.

But yeah I like how those things ride.

>>2034843
interestingly the 'hybrids are gay' idea dates back to the 90s

now they worked out just to call them gravel bikes

>>2034846
I'm sure the aluminum parts are lighter and nicer for that, but I wouldn't count on those parts to last 30+ years. depends on how much it's used of course, but the fatigue situation for aluminum will just never be as good as steel.

>>2034849
There's a good arguement to be made for steel forks and frames but taking it onto components is just ridiculous and you're only justifying riding heavy stiff crap.

Measuring wear in years also makes no sense. You have a bike with riveted chainrings, they can't even be replaced. It's designed to be disposable.

Even if you want maximum theoretical reliability just buy a new aluminium seatpost and bars. It's a good upgrade.

>>2034848
>some companies are calling them cross, crossover, fitness, or all-purpose bikes
I really want a vintage steel fitness bike.

>>2032812
kek

>>2032760

>titanium bar

No, however a torque wrench is a good idea.

>>2034833
I have a crmo stem and crmo handlebars, they weren't hard to find

https://www.youtube.com/watch?v=zUXow3d3-b0
WOO WOO

>>2035216
Where did you find a steel stem? It seems like nitto is litetally the only modern standard steel stem manufacturer that i could find and they are the long road type that i dont want.

>>2035300
not him and i usually run allum stuff but there's a lot of old steel mtb stems in 1" around (some of them quite cromo ones)
Steel stems are easy to repaint black and there are NOS ones floating around.

I put a Tioga T-Bone cromo one on this and a junkyard one found in the basket.

>>2035337
Yeah but i need a stem that goes around the steerer tube. Not inside like the old ones.

>>2035350
threadless stems only ever fail because the threads strip out and that is just as likely to happen with steel as aluminium so just.. why?

If you want secure just go for one that is not super light or super cheap and with 4 bolts.

>>2035352
That is not true. There is a reason why quick release skewers have steel inserts in the nut. Or why crank arms have steel inserts for pedal threads. Aluminum stems are also chunky and ugly.

>>2035354
is there also maybe a reason why practically every single stem is aluminium including from the brand that almost makes what you want and what you want doesn't exist ?

>>2035354
also this doesn't mean a lot but i have like 50 old stems and the one that's stripped out is steel

>>2035355
Yeah the reason is that there is less manual labour and the industry is weight phobic. I still run steel frames and have no plans to switch to aluminum. If it would be up to me i would get steel rims, hubs and cranks too but nobody makes them anymore.

>>2035358
there's nothing wrong with arbitrary preferences

>>2035358
i like steel stuff because [valid reasons] also [i just like it]
that's cool

but when you go and say that aluminium stems are a liability which they aren't it's becoming a cope

>>2035361
Maybe not if you are a regular person who buys a new bike every few years. When the time goes on the risks are getting higher.

>>2035362
9/10 of the bikes i ride are steel and i've totalled several steel frames / forks in different ways

>>2035300
eBay, that's the only place I looked
it was new and $20-25

>>2035337
lol old
>>2035350
there are 1⅛ threadless stems in crmo as well, that's what I have

>>2035358
I would do the same brother, steel lasts more than one lifetime if its well cared for
You can get new steel cranks but they're for BMX and unless you ride a fixed gear you probably won't be able to make them work on your bike
You can occasionally find old steel hubs and steel rims for sale but they're definitely not common

>>2035363
Do tell

>>2035407
Manufacturer? Do they fit 22mm steel handle bars.

why do people like threaded anyway?

>>2038174
easy regreasing, narrow frame tubes, quill stems allow easy vertical adjustment.

Mostly aesthetics, threadless is better in 99% cases until you go modern cables through headtube or shit that introduces lots of standards.

>>2035363
damn you must ride a lot

>>2035363
>Mommy, I'm lying on the internet again

>>2033705
Is anything even broken here or did they just forget to tighten the bolts?

>>2035363
name several different ways, oh please do name them

>>2033434
You're thinking of 3d printed "carbon fiber" thats plastic mixed with carbon dust. Real carbon fiber is layers of carbon cloth formed into an object.

>>2040371
and what exactly do you think keeps those layers together?

>>2040377
cum, of course

>>2040377
powdered $100 bills

>>2040377
Glue

>>2040371
This is objectively wrong as extrusion of continous fibers in lieu of FDM 3D printing has not only been demonstrated but is a thing even.
>>2040377
Plastic. Most commonly epoxy-resin, so a duroplast to be more specific.
This >>2033434 is still wrong tho as commonly any structural fiber composite material will have a fiber volume ratio up to and sometimes even beyond 0.7.
But then again we have people ITT talking about fatigue limit as if the science was proven (it is not) and as if material properties in the lab carry over to reality one to one. 4c and >>>/n/ in particular just never has been a good place to discuss technology and especially engineering and material science.

They make passenger planes out of aluminium and you think it's too dangerous to ride a bicycle made out of it

>>2043311
PREACH BROTHER

>>2032743
If carbon is so strong why do we consistently see carbon frames/forks not just crack but snap in half mid ride? I feel as if the strength of carbon is missleading as on paper, in a lab it is strong and durable. But in the real world we see constant examples of carbon parts just breaking under normal intended use. Carbon is the new meme and I refuse to participate

>>2043358
The strength is not isotropic. But you knew that.
On a sidenote it is not uncommon to see steel top tubes of 0.25mm bend and crack or those ultra thin aluminium tubes crack and crumble. Also there is incredibly strong fiber composite bikes and parts.
The real takeaway is: High performance (lighter) bicycles are incredibly fragile. Regardless of the material used in their construction.

>>2043359
I agree. I just wish people like >>2032743 didn't cope so hard

>>2034843
Definitely has aluminum rims bub

>>2043359
>The strength is not isotropic
It can be now, next generation of cfrp will be forged carbon

>>2043385
You know exactly that >>2043358
anon here referencing 'frames and forks we consistently see cracking and snapping' is asking about products made fron woven cloth. So moot point?

>>2032741 (OP)

Don't feel bad, I broke a heavy steel Lauterwasser at the same place

>>2043385
>forged carbon
>that isn't strong in any particular direction

Just watched the netflix slop on the titan submersible. They used carbon for the sub. It survived 82 dives before failing but before then you vould hear pops from footage taken on previous rides. Literal fibres breaking. Since bikes are alot noisier in comparison to a sub underwater would you even know your carbon parts are about to fail?

>>2032741 (OP)
I would worry more about the missing wheel.