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Carbon angst
 

Carbon angst

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There was also a suggestion that it was critical to tighten the expander to a specific torque<br />

Did they say why? The expander is to preload the bearings. Even if it did stop the steerer crushing, the torque wouldn’t be a factor (although obviously overtorquing it could be an issue)<br /><br />

It was also suggested that the bung needed to extend beyond the bolts on the stem.

again if this was an issue then (as most bikes come with bungs around the same length as the stem), you wouldn’t be able to run any spacers on top, which is a very common thing. And indeed my giant came with a steerer shorter than the stem<br /><br />

I get the point about crushing steerer tubes, but that’s only an issue if you over torque the clamp. Particularly at the top of the tube which is more likely to crush


 
Posted : 28/11/2023 2:30 pm
 PJay
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There was also a suggestion that it was critical to tighten the expander to a specific torque<br />

Did they say why? The expander is to preload the bearings. Even if it did stop the steerer crushing, the torque wouldn’t be a factor (although obviously overtorquing it could be an issue)

No, this was that particular video. It seemed really well done, but he was insistent on using a torque wrench to tighten up the bung

Here's one about covering your bolts (not sure if this was they shouty man as he's not actually shouting).


 
Posted : 28/11/2023 3:18 pm
 wbo
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I've seen more split aluminium parts than carbon, and I've ridden some decidedly soft steel as well which was close to failing as well.  I have angst about rubbish stuff, but not carbon in particular


 
Posted : 28/11/2023 4:11 pm
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Blimey; Hambini and Durianrider on one thread, surely the world can't take the DRAMA


 
Posted : 28/11/2023 5:14 pm
 a11y
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For anyone with carbon bar angst, £13 for a Nukeproof Horizon V2 alloy handlebar.


 
Posted : 28/11/2023 5:27 pm
 PJay
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So is that Durianrider bloke a known quantity? I don't think that I'll be watching any more of his stuff.

He seems to be giving the impression that the expander bung is structurally required.


 
Posted : 28/11/2023 5:54 pm
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If you want some reliable content about carbon fibre from someone who's earned the right to state an opinion, look up Luescher Teknik in Australia. 


 
Posted : 28/11/2023 6:21 pm
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If you want some reliable content about carbon fibre from someone who’s earned the right to state an opinion, look up Luescher Teknik in Australia.

98% of the people on YouTube need to sit down and have a think about what they're actually going to say, maybe even - radical thought - a SCRIPT, get their diagrams and parts together and then present.
The guy seems knowledgeable and he's marginally more watchable than Hambini but **** me, get your thoughts together and show it clearly and concisely!

I reckon most videos could be trimmed by at least a third and that'd just be getting rid of the umms and aaahhs and "I hope you can see this clearly".


 
Posted : 28/11/2023 6:34 pm
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dyna-ti
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I think thats the other way around, for White bros at least. As white bros were out long time before exotic came to the market.

My understanding is that Exotic are basically the factory store, but that for a long time they were only manufacturing for others and didn't sell their own products. But that may not be correct. Either way, it was always fun when I got my Exotics (pretty early on) having people tell me I was going to die riding that cheap White Bros/Nukeproof knockoff.

crazy-legs
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I reckon most videos could be trimmed by at least a third and that’d just be getting rid of the umms and aaahhs and “I hope you can see this clearly”.

Youtube is largely incentivised on length unfortunately- changes the number of ads in the video so you're basically getting paid by the um.


 
Posted : 28/11/2023 6:46 pm
 irc
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Just for a bit of balance. Some steel fork failures here. Various methods of failure. Including one where the fork leg had been stuck in the joint then apparently the framebuilder forgot to braze it.

https://forum.cyclinguk.org/viewtopic.php?t=158994

I've not had too many breakages. One Ridgeback alu seattube cracked. A suspension seatpost. Two saddle rails.  One of the rails was 50 yards from the house, the other was 50 miles from a bike shop in a place with no public transport.


 
Posted : 28/11/2023 7:58 pm
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Just for a bit of balance. Some steel fork failures here.

Surely they could just have popped down the road to their local blacksmith who would cheerfully weld it back together?!
Maybe while a small boy operates the bellows...

That seems to be the default statement and urban legend advantage for any and all steel frames...

Not like that pesky newfangled carbon what shatters into a billion pieces...

😉


 
Posted : 29/11/2023 9:25 am
 a11y
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Surely they could just have popped down the road to their local blacksmith who would cheerfully weld it back together?!
Maybe while a small boy operates the bellows…

That seems to be the default statement and urban legend advantage for any and all steel frames…

Not like that pesky newfangled carbon what shatters into a billion pieces…

That's just crazy talk 😉

Reminds me of mucking around with mates as kids, jumping the steps at a local school. Mate's front brake cable kept needing adjusted - as if the brake blocks were wearing or cable stretching. Finally dawned on us his steel front forks were now as a jaunty angle having gradually bent at the crown, reducing the distance from his canti brakes to the cable stop mounted on the top of the steerer tube. He stopped jumping then.


 
Posted : 29/11/2023 9:40 am
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My Moulton steel fork failed and sent me down. Being a small wheel and travelling slowly, it was not catastrophic. My carbon forks have not done the same.


 
Posted : 29/11/2023 11:01 am
 PJay
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Oh dear 😲 I don't think I should have watched this - https://www.bikemag.com/news/carbon-bars-fold-on-drop

Not that I'll ever be riding like that.


 
Posted : 02/12/2023 5:50 pm
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