this post was submitted on 14 Aug 2024
510 points (98.3% liked)

World News

39127 readers
2775 users here now

A community for discussing events around the World

Rules:

Similarly, if you see posts along these lines, do not engage. Report them, block them, and live a happier life than they do. We see too many slapfights that boil down to "Mom! He's bugging me!" and "I'm not touching you!" Going forward, slapfights will result in removed comments and temp bans to cool off.

We ask that the users report any comment or post that violate the rules, to use critical thinking when reading, posting or commenting. Users that post off-topic spam, advocate violence, have multiple comments or posts removed, weaponize reports or violate the code of conduct will be banned.

All posts and comments will be reviewed on a case-by-case basis. This means that some content that violates the rules may be allowed, while other content that does not violate the rules may be removed. The moderators retain the right to remove any content and ban users.


Lemmy World Partners

News !news@lemmy.world

Politics !politics@lemmy.world

World Politics !globalpolitics@lemmy.world


Recommendations

For Firefox users, there is media bias / propaganda / fact check plugin.

https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/

founded 1 year ago
MODERATORS
 
  • Ukraine downed a Russian Su-34 fighter jet over Kursk amid an ongoing territorial push.
  • The Su-34, worth around $36 million, is Russia's most efficient fighter bomber with advanced tech.
  • Ukraine has previously held long kill streaks with Russian Su-34s.
you are viewing a single comment's thread
view the rest of the comments
[–] TranscendentalEmpire@lemm.ee 2 points 3 months ago (1 children)

Pretty much anything with a turning wheel and axel relies on some sort of bearing system. That means traditional and high speed rail systems both require them.

There are some differences in types of bearing depending on what you use your rail system for. In the US we utilize antiquated plain bearings that are relatively easy to manufacture, but that's because our rolling stock is ancient compared to most countries. Mainly because we rely heavily on trucks for transporting most goods and haven't bothered investing in our aging rail network.

In Russia they have a much more modern rolling stock, as everything they ship goes through their rail network. Their rolling stock utilizes angled/slanted roller bearings, which can vastly increase their weight capacity, speed, and can double to triple their lifespan. The only problem is that they are complicated to manufacture.

[–] Waraugh@lemmy.dbzer0.com 1 points 3 months ago (1 children)

This has really peaked my interest. Are these the types of bearings you are referring to? I’d like to read more but not misinform myself. https://www.savree.com/en/encyclopedia/tapered-roller-bearing-rail

[–] TranscendentalEmpire@lemm.ee 1 points 3 months ago

Yep, that's a tapered/angled roller bearing. They're conceptually a pretty easy concept, but deceptively hard to manufacture