Cheap Chinese carbo...
 

  You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more

[Closed] Cheap Chinese carbon bars and titanium skewers. Any good?

222 Posts
39 Users
0 Reactions
1,242 Views
Posts: 0
Free Member
Topic starter
 

I know there's been a few threads on cheap Chinese carbon frames, and I think the general consensus was that they are good value for money and just as durable as the well known brands.

What about components though?

These two in particular.
[url= http://www.ebay.co.uk/itm/31-8mm-3K-Carbon-Fiber-Handlebar-Mountain-MTB-Bike-Cycling-Bicycle-Riser-Bar-New-/311022886605?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item486a689ecd ]Carbon bars for £14.[/url]
[url= http://www.ebay.co.uk/itm/Titanium-Skewers-100mm-135mm-Bike-MTB-Quick-Release-48g-pair-5-Colors-/251674238797?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item3a98f41f4d ]Titanium skewers for £7[/url]

Are they all made in the same factory and it's just that these haven't got a known brand name printed on them at the end of the production line, or are they some dodgy substandard rip off?

Worth buying or not? I mean, cheap bars and skewers, what could possibly go wrong?


 
Posted : 12/10/2014 9:19 am
Posts: 233
Free Member
 

I wouldn't. 2 areas you really don't want failing.


 
Posted : 12/10/2014 9:28 am
Posts: 9306
Free Member
 

With your reputation? : )

Why bother.. I don't wreck as much kit and I'd always use RWS or XT skewers and reputable bars.


 
Posted : 12/10/2014 9:37 am
Posts: 0
Free Member
 

I've been running a chinese road frame for the last 3 years as a training bike. I originally had a one piece bars/stem combo and had no issues. I changed it out for a longer stem.

Can't really comment on mtb bars. Must admit, in the 2004 Enduro I'm building up I'll get a set of Renthal's, road riding is one thing but on the trails is something else.


 
Posted : 12/10/2014 9:39 am
Posts: 99
Free Member
 

I believe i'll be buying a Chinese carbon full sus next year when I get the pennies together... So I'm sold on the Chinese carbon front...

However, I probably wouldn't get Chinese carbon bars... Doesn't sit right in my head... But I don't doubt that some big brand bars are made in teh same factory!


 
Posted : 12/10/2014 10:49 am
 DT78
Posts: 10064
Free Member
 

I just found some cracks in my rather expensive 3t carbon roadie bars so I don't think failures are restricted to Chinese direct stuff 🙁

My LB rims (only thing I've got experience off) have been great so far and taken a beating.


 
Posted : 12/10/2014 10:52 am
 nach
Posts: 0
Free Member
 

Don't bother with those skewers, they have a really weak clamping force because of the way ti can stretch. I had some that seemed fine with a Spesh Hardrock, but when I put one on the back of a Blue Pig, on the second ride it kicked the back wheel out on a climb and bent the brake side dropout. I'd checked the skewer was tight before setting off, and would have been screwed if the frame wasn't steel. Once I googled it, I found plenty of people who'd had similar experiences with various brands of them.


 
Posted : 12/10/2014 11:08 am
Posts: 0
Free Member
 

I believe i'll be buying a Chinese carbon full sus next year when I get the pennies together... So I'm sold on the Chinese carbon front...

I'll send a card to the hospital when it explodes 😀


 
Posted : 12/10/2014 11:12 am
Posts: 0
Free Member
 

I've got those exact skewers, they're pretty naff. They come undone even if you clamp them down tight and they're not made of titanium, it even says Aluminium on the packet when you get them.


 
Posted : 12/10/2014 11:18 am
Posts: 9180
Full Member
 

Beaconjon. Check out the OnOne carbon bars that were on a thread yesterday - Knuckleball I think they were called. £39 for carbon bars with 5 year defect warranty seems good.


 
Posted : 12/10/2014 11:30 am
Posts: 9763
Full Member
 

I'd heard that titanium at any price was the wrong material for a skewer

It stretches more under tension so you can't get enough load

Tech note

There is no way round this all Ti has the same Young's Modulus and it always lower than the Young's Modulus for steel


 
Posted : 12/10/2014 12:48 pm
Posts: 17
Free Member
 

Are they all made in the same factory and it's just that these haven't got a known brand name printed on them at the end of the production line, or are they some dodgy substandard rip off?

You have no idea.
So I'm sold on the Chinese carbon front...

There is not one Chinese Carbon Bike Part Factory, I love my Chinese made carbon frame, it came with a 5 year warranty, lots and lots of R&D and testing and a solid reputation from Santa Cruz.


 
Posted : 12/10/2014 12:51 pm
Posts: 3136
Full Member
 

I too mocked Chinese carbon for years ..... Berating all who bought and used it....

Now I have

road wheels(farsports)

Cx frame (speeder cycling)

Carbon bars(hylix) drop ones on cx bike

All had serious use and mileage without a single issue 🙂

Keep splashing your cash on the carbon with a pretty name on it if it makes you feel better/look cooler 😆


 
Posted : 12/10/2014 2:54 pm
Posts: 6603
Free Member
 

I've been running those type of ti skewers (mine were from Taiwan).

Got a set on my road bike and on my cross bike. Had them on a few years with no issues. Raced, ridden, rough stuff roads and proper cross races.


 
Posted : 12/10/2014 5:11 pm
Posts: 0
Free Member
Topic starter
 

Is the widespread fear of Chinese carbon failure based on real world evidence then, or is it just that they are not reassuringly expensive with a boutique brand name printed on it?
Sudden catastrophic failure of a handlebar is potentially no worse than similar of a frame or fork, and threads on Chinese carbon frames always get replies from people happy with them.

I wasn't sure about the wisdom of using titanium for skewers anyway, regardless of the manufacturer, so for the minimal weight saving, I think I'll stick with steel.


 
Posted : 12/10/2014 5:14 pm
 JCL
Posts: 0
Free Member
 

700mm? Great for midgets and kids I guess.


 
Posted : 12/10/2014 5:26 pm
Posts: 513
Free Member
 

Not enduro enough for youjcl 😉


 
Posted : 12/10/2014 5:37 pm
Posts: 41642
Free Member
 

I've got those exact skewers, they're pretty naff. They come undone even if you clamp them down tight and they're not made of titanium, it even says Aluminium on the packet when you get them.

Presumably that's the handles? Aluminum skewers would be pretty scary!

I had a pair of cheap (AEST?) skewers, they came with plastic cup washers rather than brass which deforemd as soon as you tightened the QR, so they got binned.

Bought KCNC ones from XCracer and they've been fine, apparently the Mt Zoom ones at half the price are even better but at the time i just wanted some good ones that worked so opted for the most expensive rather than risking it again.


 
Posted : 12/10/2014 5:37 pm
Posts: 0
Free Member
 

Is the widespread fear of Chinese carbon failure based on real world evidence then, or is it just that they are not reassuringly expensive with a boutique brand name printed on it?

By some and report back!


 
Posted : 12/10/2014 5:41 pm
Posts: 5559
Free Member
 

is it just that they are not reassuringly expensive with a boutique brand name printed on it?

It will be a bot of both

Its an unknown leap in the dark

they could be he same as a boutique brand from the same machines or they could be made as cheap as can be in some backwoods factory with no QC

If i was to to do this I would use a big well know manufacturer or supplier of carbon parts for peanuts. That is not that supplier from what I can see


 
Posted : 12/10/2014 5:51 pm
Posts: 33
Free Member
 

All I ever use on my road bike is Chinese carbon and I am still alive. Frames, bars, stems and seatposts all without bursting into flames.


 
Posted : 12/10/2014 5:53 pm
Posts: 6690
Free Member
 

I had those skewers, binned them and went back to Shimano. Weak clamping force and mine had a cheap plastic bushing thing that fell to pieces.


 
Posted : 12/10/2014 6:06 pm
Posts: 0
Free Member
Topic starter
 

Its an unknown leap in the dark

That's the problem isn't it?
My inherent racial stereotyping tells me that any Chinese factory owner who makes components for the big name brands would have no moral objection to making a few extra without the logo and selling them on the cheap.
Unfortunately, I suspect they would also have no objection to making another batch using poor quality materials that look superficially identical and selling them cheap too.

How do I know which is which?


 
Posted : 12/10/2014 6:06 pm
 JCL
Posts: 0
Free Member
 

Not enduro enough for youjcl

Yeah even 740mm feels tiny to me.


 
Posted : 12/10/2014 6:18 pm
Posts: 71
Free Member
 

You're just #SoEnduro, as you seem desperate to keep pointing out.

I hope you paint your 1100mm bars fluoro yellow for extra #Enduro points?

The best lightweight skewers I've tried were either Tune AC16/17 or Mt Zoom. The Tune ones have a proper internal cam, but they're bloody expensive. The levers on the KCNCs were too short IMO, the Mt Zoom ones work very well.


 
Posted : 12/10/2014 6:22 pm
Posts: 80
Free Member
 

Last 2 years of XC racing on unbranded Chinese carbon bars now, first year mostly rigid, then hardtail. Prior to that was using Easton carbon monkey bars, they cracked.

Chinese ones have not exploded and I'm still here posting about it


 
Posted : 12/10/2014 6:27 pm
Posts: 0
Free Member
Topic starter
 

Amedias, which brand of unbranded bars?


 
Posted : 12/10/2014 6:29 pm
Posts: 80
Free Member
 

Can't remember, bought on eBay with some skepticism but I have as much faith in the as any other bar now


 
Posted : 12/10/2014 6:32 pm
Posts: 3136
Full Member
 

Oh and a climax 130g weenie seatpost that's taken a beating on my local roads without snapping and rogering me 😯


 
Posted : 12/10/2014 6:34 pm
Posts: 71
Free Member
 

How wide do you want? There are loads of "Mr Ride"/Climax 660mm ones, 145g. So not crazy light, but only £40. I'm contemplating their seatposts.


 
Posted : 12/10/2014 6:36 pm
Posts: 0
Free Member
 

I have a friend who rides XC and cross at a reasonable level. Both his XC and cross bikes are generic chinese frames and his cross wheels also. He's had no issues with any of his kit.

Getting back to my chinese road frame and bars, it's handled the ripped up tarmac on alpine descents 3 years on the trot and there are some big holes coming down the HC side of the Joux Plane.

I also run a 90mm tub chinese front on my Scott Plasma, it's been a solid purchase at £150 delivered.

I don't have tons of cash to throw at exotic gear so I make it stretch where I can.

The Chinese stuff is ok but I'm still reluctant about fitting some to my Enduro as I'm not sure they'll survive a half decent off, saying that, a nice light ally pair probably wouldn't fair much better I guess.
Undecided.


 
Posted : 12/10/2014 6:38 pm
Posts: 0
Free Member
 

To the OP, I'll be interested in your views on the bars should you get them.


 
Posted : 12/10/2014 7:16 pm
 br
Posts: 0
Free Member
 

I've run an MT Zoom Ti skewer for years in the rear. Never been a problem.


 
Posted : 12/10/2014 7:21 pm
 JCL
Posts: 0
Free Member
 

You're just #SoEnduro, as you seem desperate to keep pointing out.

No. Just with the times.


 
Posted : 12/10/2014 10:06 pm
Posts: 71
Free Member
 

Aaah, so you're a fashion victim? Presumably you're using a Yardstick bar or equivalent? What did you praise before the industry told you that wider was better?


 
Posted : 13/10/2014 6:12 am
Posts: 0
Free Member
 

Using exotic carbon bars on my Lurcher rigid, which gets a beating. No issues with instant death whatsoever.

Also took a punt on some fully built whells from chinese ebay seller CN Carbon. They're really rather good too.

AndyV


 
Posted : 13/10/2014 7:57 am
Posts: 3378
Full Member
 

[i]This quick disassembling carbon fiber handlebar is easy to use,and one of the best gifts to your friends
The carbon fiber handlebar is made of high quality carbon fiber.So that you can use it relieved
With the special design,the carbon fiber handlebar can save for a long time
[/i]

Well thats me sold.


 
Posted : 13/10/2014 8:09 am
Posts: 80
Free Member
 

Well thats me sold.

Can you write convincing marketing spiel in Chinese?


 
Posted : 13/10/2014 9:40 am
Posts: 0
Free Member
 

The best lightweight skewers I've tried were either Tune AC16/17 or Mt Zoom. The Tune ones have a proper internal cam, but they're bloody expensive. The levers on the KCNCs were too short IMO, the Mt Zoom ones work very well.

I've got some Extralite ones which seem pretty good. I also have KCNC ones on the roadie where they're fine, but wouldn't use them on a MTB.


 
Posted : 13/10/2014 9:48 am
Posts: 71
Free Member
 

I've got some Parts of Passion ones which are obscenely expensive, but utterly useless, I'd avoid them!


 
Posted : 13/10/2014 9:52 am
Posts: 3378
Full Member
 

[i]Can you write convincing marketing spiel in Chinese? [/i]
Nope, but then my day job isn't flogging stuff on ebay to the chinese.
What does [b]'quick disassembling carbon fiber handlebar '[/b] mean to you?


 
Posted : 13/10/2014 10:36 am
Posts: 80
Free Member
 

What does 'quick disassembling carbon fiber handlebar ' mean to you?

To me it means somebody made a poor translation/mistake


 
Posted : 13/10/2014 10:51 am
Posts: 0
Full Member
 

Interesting thread. I too have had a bunch of cheap unbranded bars and seatposts in my ebay watch list for weeks now, still not brave enough to try them.


 
Posted : 13/10/2014 10:54 am
Posts: 71
Free Member
 

Also took a punt on some fully built whells from chinese ebay seller CN Carbon. They're really rather good too.

Their £300/1320g 38mm clinchers look good!


 
Posted : 13/10/2014 11:01 am
Posts: 80
Free Member
 

I too have had a bunch of cheap unbranded bars and seatposts in my ebay watch list for weeks now, still not brave enough to try them

That's exactly why I bought some actually, every time the topic came up there would be lots of fear-mongering, scare stories and teeth sucking, and 2nd hand anecdotes about the postman's nan's hairdresser's husband who had a Chinese carbon bar that exploded once and sent carbon fibre shards straight to his heart and killed him and his cat dead, but very little actual 1st hand reports.

I was (and still am) very sceptical about some fo them, but I bought some cheapies off ebay (£15) and put them on just rode them as normal, nothing broke, so I started using them on my race bike, trying to do a proper 1st hand test and use them under the same conditions I would any other bar.

The bars (and me!) survived, so I kept using them. They don't seem noticeably worse finsihing wise to the other branded bars I have either.

Who knows how they will fare long term, or in terms of ultimate strength, but I've had a couple of years on them now with no drama and I pretty much forget they are there until someone asks what make they are.

There seems to be general acceptance of cheap Chinese carbon when its a frame, or rims, or even a fork, but for whatever reason there's still a lot of doubt about bars and seatposts.

Make of that what you will, but all I will say is I have noticed that in general, most of the scare-mongering comes from people who haven't used them (natural perhaps as they have doubts so aren't going to), where as most people that have used them have reported very few issues, certainly no more than any other material or brand.


 
Posted : 13/10/2014 11:05 am
Posts: 0
Free Member
 

I have the exact same bars (also from HK - Aliexpress) in 700mm staright flavour for my tupperware 29er Planet X frame. I havent built it yet, so cant comment on them snapping however they dont seem bad quality, look just like FSA bars of old.

Ill report back in the replacement dentures thread!


 
Posted : 13/10/2014 11:51 am
Posts: 0
Free Member
 

I took a punt on a set of the Carbon Flat mtb bars ,been using them for over 6 months so far on my rigid hardtail with no problems.

The paranoid side of me does check them regularly and did compare them to a set of Answer Carbon pro tapers and finish/quality wise they dont seem any better/or worse.


 
Posted : 13/10/2014 9:38 pm
Posts: 17
Free Member
 

Make of that what you will, but all I will say is I have noticed that in general, most of the scare-mongering comes from people who haven't used them (natural perhaps as they have doubts so aren't going to), where as most people that have used them have reported very few issues, certainly no more than any other material or brand.

I wouldn't say my comments were scaremongering but again from your positive experience nobody knows if they are getting the same product as you, from the same factory or not. That is my reason for avoiding.


 
Posted : 13/10/2014 10:19 pm
Posts: 65918
Free Member
 

mikewsmith - Member

I love my Chinese made carbon frame, it came with a 5 year warranty, lots and lots of R&D and testing and a solid reputation from Santa Cruz.

Ironic really considering their fail rate.


 
Posted : 14/10/2014 12:00 am
Posts: 17
Free Member
 

Ironic really considering their fail rate.

Not really as they replaced every single one. That and the issues were resolved with a redesign.


 
Posted : 14/10/2014 12:29 am
Posts: 71
Free Member
 

So it doesn't matter if carbon bits snap, as long as they replace them? But you'll avoid products that have a lower failure rate because they may not be safe? 😕


 
Posted : 14/10/2014 6:15 am
Posts: 17
Free Member
 

Eh, thats a chuck of assumption and mis quoting, you don't know if "Handle bars from china" have a low failure rate, they are made all over the place in different factories with no central control. There were issues with a number of SC frames cracking round a bearing insert due to a design issue that was fixed. My general point is about people saying Chinese carbon is this or that, it's an incredible multitude of things made by lots of people, in terms of the no name stuff or worse the blatant rip off/fakes with no known standards, testing or QC process.


 
Posted : 14/10/2014 6:52 am
Posts: 0
Free Member
Topic starter
 

That's pretty much my point.
I don't suppose Enigma would want to be lumped in with Lynskey as "Western titanium".
How do I know which is good Chinese carbon and which is not?
Ebay feedback is no good for long term reliability.


 
Posted : 14/10/2014 6:59 am
Posts: 71
Free Member
 

So buy from one of the shops that trade under their own name away from eBay?


 
Posted : 14/10/2014 7:00 am
Posts: 65918
Free Member
 

mikewsmith - Member

Not really as they replaced every single one. That and the issues were resolved with a redesign.

My point was that their supposedly superior r&d and testing saw them launch a number of products that needed to be redesigned. Their customer service dealing with it seems to have been excellent and they've fixed the fault so I wouldn't hold it against them, but it kind of calls doubt on the design excellence.


 
Posted : 14/10/2014 9:07 am
Posts: 80
Free Member
 

I wouldn't say my comments were scaremongering but again from your positive experience nobody knows if they are getting the same product as you

Wasn't directed at you specifically by the way, was a general observation from the many bike forms (there are others?!) on t'internet.

The bit about unknown is totally valid and was kind of my point about why I wanted to try some, I actually picked the cheapest ones I could find and not form a known manufacturer. As njee says, you can mitigate a lot of the unknown by buying from the bigger Chinese manufacturers who trade under their own name, but sometimes it is an unknown and the only way to find out is to try, same with any new brand/supplier in any material. Just because mine havent exploded doesn't mean others wont, but it also doesn't mean they will.

If you look around though there are actually very few 1st hand accounts of people buying 'cheap Chinese carbon' and experiencing a failure. but plenty of first hand reports of good products with no problems.

I would expect people to moan about the crap more than praise the good, as that's naturally what happens, so based on the evidence available the risk seems low.

Sure, there are some, but not as many as the prevailing 'stay away!' opinion would suggest.

NW and Njee are ribbing you a little bit about SC but it is an interesting point, you've got faith in brand that had a proven design issue, and documented multiple failure rate, yet you're happy to buy from them. But with another Chinese brand with no documented failure rate and no known design flaws you won't buy from them.

I totally understand that position, and brand faith based on reputation and how they handle such failures, but it's hardly logical based on actual evidence is it?


 
Posted : 14/10/2014 9:10 am
Posts: 0
Free Member
 

My general point is about people saying Chinese carbon is this or that, it's an incredible multitude of things made by lots of people, in terms of the no name stuff or worse the blatant rip off/fakes with no known standards, testing or QC process.

Exactly, China is a big country with thousands of factories churning out everything from complete shite to the very highest quality. Unless you can guarantee professional design, materials, manufacturing technique and quality control then I wouldn't go anywhere near - regardless of cost.

At the end of the day a bar failure is probably going to result in serious injury. It's one of those failures you really want to avoid at all cost. For that reason I'm not a big fan of ultra-light bars, whatever they are made of. I would only choose branded bars from well known quality manufacturers, bought from a reputable retailer. I usually go for their toughest option too (usually DH rated) rather than super lightweight.


 
Posted : 14/10/2014 10:04 am
Posts: 0
Free Member
 

[quote=amedias ]As njee says, you can mitigate a lot of the unknown by buying from the bigger Chinese manufacturers who trade under their own name

TBH that's just about as good as buying a Chinese made part from a Western brand. I'd also be wary of buying parts on ebay where I don't know the source, but no particular issues where there is a real company with a reputation (my road bike is a Pedalforce - it occurs to me the seatpost is also one of theirs, and I have no concerns at all about that, and would happily buy any of their parts).


 
Posted : 14/10/2014 10:22 am
Posts: 0
Full Member
 

Another set of those QR's here. The clamping force is rubbish and the plastic washer falls apart instantly. They're on my weight weenie bike which fortunately never gets ridden 🙂

As for bars, I've tended to buy second hand branded ones. "Oh noes" I'm sure someone will say, "what if they've been crashed and weakened and are about to fall apart". Well, much like the buyers of chinese bars, I've no idea what state the carbon is in beyond the surface. And also like the buyers of chinese bars, I'm not dead yet.

I keep wondering about trying some Chinese carbon rims though.


 
Posted : 14/10/2014 10:30 am
Posts: 0
Free Member
 

I'm not dead yet.

I love this quote. The "yet" is the key part of it 😉
Not saying bars are going to kill you, but you might need a new face if they do let go at some point.


 
Posted : 14/10/2014 10:36 am
Posts: 71
Free Member
 

Not saying bars are going to kill you, but you might need a new face if they do let go at some point.

Will it be less serious if they say Easton on them and you've paid 5 times as much then?


 
Posted : 14/10/2014 10:45 am
Posts: 15261
Full Member
 

I'm wondering if at £14 a throw it's not worth ordering two, one to "Proof load" and/or chop up and decide if you think it is actually safe, the second to either use, or flog on via STW so you can then play the villain in another disgruntled buyer thread...

Don't touch the Ti skewers though, just accept the crippling weight of Shimano's and find another way to save those grams...


 
Posted : 14/10/2014 10:45 am
Posts: 65918
Free Member
 

FWIW if you want a cheap light skewer replacement, the Halo hex skewers (not quick release) are a good one, and still have a steel skewer.


 
Posted : 14/10/2014 10:49 am
Posts: 80
Free Member
 

I love this quote. The "yet" is the key part of it
Not saying bars are going to kill you, but you might need a new face if they do let go at some point.

And there we go, more speculation and no actual evidence. I'm not saying every thing from China is 100% awesome, I just prefer to make my decisions based on evidence and 1st hand experience rather than speculation.

I'm sure this is the third time I've said it but...

A> The reports of failures are few and far betweeen.

B> The reports of decent products with no issues are numerous

Being that people who experience A are more likely to complain than B, you would expect, simply on the balance of probabilities, that there would be more reports than we actually see in reality when viewing the evidence in online forums* (admittedly limited scope of buying population).

*unless they're all dead from bar failure 😉


 
Posted : 14/10/2014 10:56 am
Posts: 80
Free Member
 

I'd actually be really interested in someone* doing a study like this with various components bought from major brands, lesser known but good rep Chinese manufacturers, and the complete unknowns.

It would be great to have some real world data to quantify the differences in terms of ultimate strength, longevity and fitness for use under normal loads. I'd be thoroughly open-minded about it and would [i]hope [/i]that the big brands would come out on top, but I [i]suspect[/i] it would provide some interesting results, possibly showing that the large Chinese manufacturers are ultimately just as good/equal, and a few rogue elements with seriously sub-par products.

*That someone would have to be independent, unbiased, and unaffiliated with any of the big brands.


 
Posted : 14/10/2014 10:57 am
Posts: 0
Free Member
 

Problem is the volumes you'd have to test to get statistically relevant data. Which is why inspection of manufacturing practices, QI, etc is usually how it's done up front to get an idea of how reliable it's likely to be.


 
Posted : 14/10/2014 11:00 am
Posts: 15261
Full Member
 

I am actually half tempted to buy a cheap Chinese bar to destructively test in my Garage now...

Simply because I've not yet seen much real evidence for or against these parts, just anecdotes and internet hearsay...

I bet someone will post a link to some testing now won't they...


 
Posted : 14/10/2014 11:03 am
Posts: 80
Free Member
 

Problem is the volumes you'd have to test to get statistically relevant data

absolutely it would be a big task, but would be interesting...

The assumptions often made about Chinese manufacturers are that the QC process is either missing, sub-standard or not representative of actual output.

These are assumptions though, lots of the Chinese manus. do publish some of their test and QC data, but then people start making claims that it's made up, or that the ones that don't publish are the ones that haven't done any testing.

They can't win, hence why it would be interesting to do an independent study.

I am actually half tempted to buy a cheap Chinese bar to destructively test in my Garage now...

Go for it Cookeaa, but remember, you'd also have to destructively test brand name bars in equivalent fashion to have any meaningful comparison...

I bet someone will post a link to some testing now won't they...

I've been looking, and not found much, would love to see some if anyone does have links?

There was a semi-useful comparison done of some carbon rims by one fo the Unis (Bath?) but from memory that was also full of problems with test methodology and sample size.


 
Posted : 14/10/2014 11:05 am
Posts: 0
Free Member
 

But you could test a bar and even if that company has a 99% failure rate, you might get one from the 1%. I think we all accept that no products are perfect and failures will always happen - that's the problem with perception - if I get the one in a billion, I think that the product is crap.

(I ride a direct from China frame/fork BTW)


 
Posted : 14/10/2014 11:07 am
Posts: 80
Free Member
 

And that's why, as you said earlier, sample sizes would have to be quite large.

We all know you can't draw any conclusions from a single bar or a single test, same as you can't draw meanginful conclusions form internet forums 😉


 
Posted : 14/10/2014 11:10 am
Posts: 0
Full Member
 

I'm not dead yet.
I love this quote. The "yet" is the key part of it
Not saying bars are going to kill you, but you might need a new face if they do let go at some point.
I love this quote. The "if" is the key part of it.


 
Posted : 14/10/2014 11:26 am
Posts: 65918
Free Member
 

Of all the mountain biking things that might cause me to need a new face, snapping a bar is probably pretty low.


 
Posted : 14/10/2014 11:30 am
Posts: 3136
Full Member
 

It's easy to spot the guys on this thread that are running Silly expensive carbon bits with a brand name on them 😉


 
Posted : 14/10/2014 11:35 am
Posts: 0
Free Member
 

I am actually half tempted to buy a cheap Chinese bar

Which one though? A genuine branded one with a decent track record or just a random Chinese knock-off out the back door of some unknown factory off flea-bay? The latter would be nothing more than a lottery. A bit like buying random Chinese power supplies for your kid's toys or phone charger. It might be just fine or it might kill you or burn your house down or both.


 
Posted : 14/10/2014 11:52 am
Posts: 0
Free Member
 

Will it be less serious if they say Easton on them and you've paid 5 times as much then?

The point is that if you do your research properly you can mitigate your chances of it happening at all. Buying a cheap Chinese carbon bar from an unknown source and brand is increasing your risk considerably. But then I'm an engineer so I understand concepts like design, materials, manufacture, quality control etc.

You can put whatever crap floats your boat on your own bike and I'll put whatever quality parts I like on mine.


 
Posted : 14/10/2014 11:57 am
Posts: 15261
Full Member
 

Go for it Cookeaa, but remember, you'd also have to destructively test brand name bars in equivalent fashion to have any meaningful comparison...

You're right, and really you'd want to test a wide range of bars from different suppliers in different materials and at various price points to build a better picture...

But then given limited budget, time and resources, you might argue that as a minimum "control" test should really be done with a branded bar at the equivalent price point, most likely an aluminium one, say an EA30? that's typically the consumer's choice; [i]bottom end[/i] branded product, or un-branded chinese Composite?

Testing an ebay special against say an ENVE bar, would be a bit like comparing a Daewoo with a Porsche and completely ignoring the price differential surely?

And yes 100% confidence could only ever come from 100% destructive testing of all products (generally not considered profitable by most companies), but at least some indication of a product's performance can be drawn from any sample size, even a sample of just one, you simply need to highlight that in any conclusions you might draw...

Of course with zero available test data you are currently no better informed than you would be with even a single data point, hence everyone's for/against posts on these Chinese composite threads are of no more value than any other anecdotes or speculation, there's no real harm in saying "I don't know"...

TBH I really do quite like the idea of semi-scientifically breaking/bending some bars simply to expand mine and other's understanding...

The real question is how do I apply known loads and measure deflections and breaking points consistently, and repeatably in my Garage and with minimal funds?

A test rig is required...


 
Posted : 14/10/2014 12:15 pm
Posts: 0
Free Member
 

@cookeaa
Speaking of the testing I saw a video of one of the legit bar companies adding weights on each side of the bar and dropping it from a set height multiple times. I think it was on BikeRadar a couple of weeks back on the top 10 Carbon bars or something. I can't find the link though. And not sure how relevent the testing will be.

Also I get what your saying about comparing the price and saying it's like comparing a Daewoo with a Porsche, but isn't the point of the Chinese bars meant to be that they would be at the same price point if made in UK factories?

Anyway I will have another look for the bar test video for anyone interested.


 
Posted : 14/10/2014 12:30 pm
Posts: 0
Free Member
 

Found it, it was in Dirt not sure what it proves but it may be of interest to some.
[url= http://dirtmountainbike.com/products/10-best-mountain-bike-carbon-bars.html/11 ]http://dirtmountainbike.com/products/10-best-mountain-bike-carbon-bars.html/11[/url]


 
Posted : 14/10/2014 12:33 pm
Posts: 0
Free Member
 

markshires - that's Easton - it's on their site IIRC


 
Posted : 14/10/2014 12:34 pm
Posts: 71
Free Member
 

Buying a cheap Chinese carbon bar from an unknown source and brand is increasing your risk considerably. But then I'm an engineer so I understand concepts like design, materials, manufacture, quality control etc.

You can put whatever crap floats your boat on your own bike and I'll put whatever quality parts I like on mine.

1) Get over yourself FFS, call yourself whatever you want, you're still making a lot of entirely baseless comments. Can you answer my question about whether it would be less serious if some Easton bars broke? Let's not pretend that branded parts don't break, that would be stupid.

2) How do you know that buying from an unknown source is increasing your risk? It just increases your perception of risk. Look at the story over there >>>>>>> Orange have recalled forks because the steerer was detatching from the fork. You're basically saying it's lower risk to buy an Orange fork than a Chinese one, in this instance that doesn't appear to hold water.

If you don't want to buy parts direct from the Far East that's fine, but you're talking a lot of scaremongering shit.


 
Posted : 14/10/2014 12:34 pm
Page 1 / 3

6 DAYS LEFT
We are currently at 95% of our target!