this post was submitted on 09 May 2025
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Memes

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A meme is an idea, behavior, or style that spreads by means of imitation from person to person within a culture and often carries symbolic meaning representing a particular phenomenon or theme.

An Internet meme or meme, is a cultural item that is spread via the Internet, often through social media platforms. The name is by the concept of memes proposed by Richard Dawkins in 1972. Internet memes can take various forms, such as images, videos, GIFs, and various other viral sensations.


Laittakaa meemejä tänne.

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[–] [email protected] 51 points 4 days ago (3 children)

Any truth to this? I doubt it but still...I wouldn't know.

[–] [email protected] 61 points 4 days ago* (last edited 4 days ago) (1 children)

No. The joint isn't threaded, it's a slew ring. Think of it like a wide diameter ball bearing (rod bearing? Pin bearing? Not sure about the English word..) with some extra locking mechanisms to hold the top part in place.

What happened here is most likely a damaged or worn slew ring.

Source: I helped replace the busted slew ring on a ships crane once.

[–] [email protected] 3 points 3 days ago (1 children)

So is it possible to swing infinitely any way? Or is there a limit because of electric cables or something?

[–] [email protected] 5 points 3 days ago* (last edited 2 days ago)

Unlimited, other than wear and tear of course. Electricals and hydraulics go via a slip ring.

[–] [email protected] 54 points 4 days ago (2 children)

There's a remote risk of this catastrophic failure happening due to bad maintenance, installation, or building, but there's no risk of this happening due to normal rotation/swing. In other words, assuming the machine is in good working order and used for realistic applications, this will never happen.

Here's a video that explains how excavators achieve infinite swing angle without tangling the hydraulic hoses that go to the motors in the tracks. The dude in the video knows his stuff.

https://youtu.be/oUVE2PIV5_k

[–] [email protected] 34 points 4 days ago (2 children)

Tom Scott has a video of a rotating house, the plumbing uses the same logic there, they made some nice animations: https://www.youtube.com/watch?v=gisdyTBMNyQ

[–] [email protected] 5 points 4 days ago

Thanks for sharing, it is really cleverly beautiful!

[–] [email protected] 1 points 4 days ago

I always wanted to build this in Luanti

[–] [email protected] 3 points 4 days ago

Interesting thank you.

[–] [email protected] 11 points 4 days ago

I've heard it's one of those ways they haze new operators.

[–] [email protected] 18 points 4 days ago (1 children)

This is actually really scary. I would not want to be the operator when the top falls off.

[–] [email protected] 9 points 3 days ago (1 children)

That’s not typical, mind you

[–] [email protected] 3 points 3 days ago

They could at least tow it out of the environment.

[–] ininewcrow 18 points 4 days ago (1 children)

Just made a post it note and put on my wall for the next time I'm operating a full sized construction excavator

[–] [email protected] 7 points 4 days ago (1 children)
[–] ininewcrow 5 points 4 days ago

That's beautiful ... whenever I see construction guys on the highway packing up a piece of heavy machinery I tell my wife that these guys could be stealing that excavator / tractor / packing machine / dump truck / whatever in broad day light and no one would notice a thing.

Everyone on the highway just ignores these people like they don't exist and a gang can just pull up with a flatbed, jack a machine, load it up professionally, drive it away to the other side of the country and resell it somewhere else or tear it apart for parts to resell.

[–] [email protected] 8 points 3 days ago* (last edited 3 days ago)

Never assume the top was fully screwed on, make sure to turn to the right until it can't anymore so you know you have the full 16 rotations to the left

[–] [email protected] 3 points 3 days ago

Plus, you don't want to get dizzy! You gotta rotate the other way around to be a pro.