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Mechanic snaps counterfeit handlebars with his bare hands

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Mechanic snaps counterfeit handlebars with his bare hands

Old 01-31-16, 05:51 AM
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Mechanic snaps counterfeit handlebars with his bare hands



Watch: Mechanic snaps counterfeit handlebars with his bare hands - Cycling Weekly
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Old 01-31-16, 06:12 AM
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I wouldn't want him to do the same with my full priced carbon bar, nor would I bet a single coin that it wouldn't crack.
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Old 01-31-16, 06:15 AM
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Originally Posted by Gaur View Post
I wouldn't want him to do the same with my full priced carbon bar, nor would I bet a single coin that it wouldn't crack.
And before we go any further, let's remember that counterfeit isn't the same as reputable no-name.
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Old 01-31-16, 06:19 AM
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Originally Posted by Gaur View Post
I wouldn't want him to do the same with my full priced carbon bar.
He did.
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Old 01-31-16, 06:19 AM
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Doesn't that carbon stuff assplode on it own?
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Old 01-31-16, 06:21 AM
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Originally Posted by rpenmanparker View Post
reputable no-name.
Reputable no name
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Old 01-31-16, 06:56 AM
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Originally Posted by Lazyass View Post
Reputable no name
Perhaps reputable Chinese-made would be less humorous.
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Old 01-31-16, 07:06 AM
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I have 44 cm Profile carbon bars on my tandem and fear for my life when using the drops. Things are so flexy compared to my K-Wings that I fear they are going to snap. If Profile bars are flexy, I can't imagine what counterfeits are like.
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Old 01-31-16, 07:07 AM
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Originally Posted by Dave Cutter View Post
Doesn't that carbon stuff assplode on it own?
Only when exposed to sun light.
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Old 01-31-16, 06:15 PM
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Originally Posted by Dave Cutter View Post
Doesn't that carbon stuff assplode on it own?
Originally Posted by Trsnrtr View Post
Only when exposed to sun light.
Or days with vowels in them...
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Old 01-31-16, 06:35 PM
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Not sure what to make of that video, I mean the guy is breaking the bars in a direction not likely to happen hitting potholes. Would it have snapped off with a similar amount of force applied in a more riding-like direction?

Be that as it may I'd be afraid to use knock-off carbon bars, personally - that is the no-name kind coming directly from China and often seen on eBay. Breaking the bars or stem suddenly could lead to catastrophic injuries, I'm just too scared to risk it.
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Old 01-31-16, 06:45 PM
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Old 01-31-16, 06:56 PM
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When is he going to do a fork? A frame?

Sorry Rpen.
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Old 01-31-16, 06:59 PM
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Originally Posted by Trsnrtr View Post
I have 44 cm Profile carbon bars on my tandem and fear for my life when using the drops. Things are so flexy compared to my K-Wings that I fear they are going to snap. If Profile bars are flexy, I can't imagine what counterfeits are like.
Food for thought:

Elastic modulus + Geometry --> Stiffness/Flexy-ness

Yield/ultimate strength + Geometry --> Strength/Permanently bent

Fracture toughness + Defects + Geometry --> Fracture (what we saw in the video)

Of course in CFRP the fibre orientation plays a large role in modulus, strength, and fracture toughness.


All I'm trying to get across is that I could make you a $5 handlebar made from glass that is much stiffer than any CFRP handlebar you can buy.
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Old 01-31-16, 07:32 PM
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Although his hands were bare, he didn't "break it with his bare hands." He used his whole upper body.

And who pays $32.50 just to "take a closer look at some of the fake parts that he sees regularly on customer's bikes?" Aren't the parts on customer's bikes close enough for him to look at?

It says he repeated the test with name brand bars which didn't crack even though "much more force" was applied. How do they know how much force was applied? Guy looked like he was flexing pretty good on on the bars in the video.

The moral of the story is to always buy your bike parts from your local bike shop or through a reputable online retailer to make sure that they will never fail you out on the road.

Buying parts from any given source is no guarantee that they will never fail.

I'm not saying that the bars weren't inferior. I do however, smell BS somewhere. At best the article is an exaggeration and extremely poorly written.

Last edited by TimothyH; 02-01-16 at 08:15 AM.
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Old 01-31-16, 07:37 PM
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Originally Posted by 2manybikes View Post
When is he going to do a fork? A frame?

Sorry Rpen.
Don't look at me. I don't have any Chinabike bars and stems. My Kestrel bars WERE easily crushed, however, at 4 Nm torque on the stem bolts.
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Old 01-31-16, 08:05 PM
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I still haven't figured out what's wrong with aluminum bars.
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Old 01-31-16, 08:09 PM
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Originally Posted by rpenmanparker View Post
Don't look at me. I don't have any Chinabike bars and stems. My Kestrel bars WERE easily crushed, however, at 4 Nm torque on the stem bolts.
I was wondering if he would try your frame. or fork.
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Old 01-31-16, 08:21 PM
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I bought a set of CF bars off eBay recently, they looked much like those. I haven't used them yet but I have to admit that I'm weary of them. Maybe it's just because they are CF and I'm used to aluminum but these feel thin and weak. My no name China wheels and my brand name CF frameset both feel very rigid and solid (though very light). I know CF can be laid to give increased stiffness in one direction while being somewhat flexible in another, which would lead me to believe that it would be stronger one direction than another. Could that be the case with the bars from the video?

Just on a side note, the bars that come stock on most Japanese MX bikes can be bent almost as easily as those CF bars broke. I've seen them bend from simple falling off the stand onto the floor and once bent the steel will fracture in the crease.
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Old 01-31-16, 08:27 PM
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My counterfeits are still going strong, but they were 70 euros, and I didn't overtorque the brake lever causing a crack in that location which made snapping the bars a snap.
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Old 01-31-16, 09:29 PM
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I've been thinking about this. I've had phonebooks around the house my entire life. I've never had one actually accidently rip in half on me. But apparently it does happen:

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Old 01-31-16, 09:32 PM
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Originally Posted by Homebrew01 View Post
I still haven't figured out what's wrong with aluminum bars.
...I broke some aluminum bars on a PX-10 once. That was when I was dialing it up to 400 watts and doing something with the hammer. It frightened me considerably, but they folded rather than snapping, so maybe that's what saved me.
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Old 02-01-16, 04:16 AM
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Originally Posted by Jiggle View Post
My counterfeits are still going strong, but they were 70 euros, and I didn't overtorque the brake lever causing a crack in that location which made snapping the bars a snap.
If you read the article in the link, he heard a crack when he was tightening the stem, not the brake lever. If you can crack carbon by tightening the brake lever then carbon is even worse than I thought haha
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Old 02-01-16, 06:41 AM
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I find that 2 Nm is more than enough torque to secure bars to an FSA OS-99 stem even without assembly paste. A mechanic I have known for about 30 years told me most torque specs are stupid high and largely ignored by the pros. The stem in question suggested 6 Nm, which did crack the Kestrel SL bars first time around. The replacements have been fine at the lower torque for years.
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Old 02-01-16, 07:54 AM
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I have frying pans at home.

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