this post was submitted on 13 Jun 2024
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[–] Kecessa@sh.itjust.works 91 points 4 months ago* (last edited 4 months ago) (4 children)

Right? Who would be crazy enough to do that?

Next you're going to tell me someone will make one without a top tube?

[–] dejected_warp_core@lemmy.world 100 points 4 months ago

Hey, look here buddy. You can't be your own comment thread and post all the plausible responses yourself like that. You're putting all the trolls out of work.

[–] pyre@lemmy.world 14 points 4 months ago (1 children)

doesn't that prove their point? they all look overbuilt, as the original commenter said.

[–] Kecessa@sh.itjust.works 5 points 4 months ago* (last edited 4 months ago) (1 children)

Carbon fiber, aerodynamics...

For this one it's used as suspension (not carbon fiber)

Not that rare in old mountain bikes either, pretty sure my old steel Raleigh was similar

[–] Natanael@slrpnk.net 0 points 4 months ago (1 children)

Carbon fiber has very limited lifetimes when used for something with a lot of hard impacts, so if you're not sticking to smooth surfaces the bike can literally split apart with little warning

[–] Kecessa@sh.itjust.works 2 points 4 months ago (1 children)

Eh...

Modern mountain bikes? Hell, they make car and motorcycle wheels out of it...

[–] Natanael@slrpnk.net 3 points 4 months ago (1 children)

I Googled "motorcycle carbon fiber wheel" and autocomplete immediately suggested adding "failure" and doing that search has endless relevant results

[–] Kecessa@sh.itjust.works 3 points 4 months ago* (last edited 4 months ago) (1 children)

And if I do a research for "Toyota Tercel engine failure" I find tons of results as well even though it's one of the most reliable car ever built.

Crazy how search engines show you results for what you're looking for, right?

[–] Natanael@slrpnk.net 2 points 4 months ago (1 children)

https://www.bikeradar.com/features/are-carbon-fiber-clinchers-safe

They have limited tolerance for heat that you can't solve without either improving cooling or reducing hard acceleration / deceleration (using additional material) when used in wheels. When used in frames you need to reduce stress points with very good dampening.

They can certainly be strong, but they have similarities to tempered glass where damage accumulates over time and can't self heal so they have a best before date built in.

[–] Kecessa@sh.itjust.works 1 points 4 months ago (1 children)

2012 article

Yeah........

People ride carbon mountain bikes with carbon wheels for years without issues and worst case it can be repaired.

I'm done here.

[–] Natanael@slrpnk.net 1 points 4 months ago

https://www.outsideonline.com/outdoor-gear/bikes-and-biking/carbon-fiber-bike-accidents-lawsuits/

https://www.cyclingweekly.com/news/giant-facing-legal-claim-of-over-pound200000-after-bike-collapse-causes-broken-back

What these manufacturers needs to do is to start embedding indicators for stress damage (common in industrial machinery, etc), but so far I haven't heard of anybody at all doing that in this industry. Until they do I don't trust it.

[–] ThunderclapSasquatch@startrek.website 2 points 4 months ago* (last edited 4 months ago)

That top one is kinda sexy ngl

[–] Hildegarde@lemmy.world -4 points 4 months ago (1 children)

The meme shows only bikes with flat handlebars, like commuter bikes intended for transportation.

Every bike you posted are high performance racing bikes with specialized aerodynamic handlebars.

Different priorities. Triangless bikes with a top bar is not a good idea for commuter bicicles like the ones in the meme.

[–] Kecessa@sh.itjust.works 19 points 4 months ago

I still showed that it's perfectly possible to build a bike without a seat tube, hell I'm sure we can find 90s examples that weren't high performance bikes.