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Be sure to count your turns
(sopuli.xyz)
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this post was submitted on 09 May 2025
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Memes
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Any truth to this? I doubt it but still...I wouldn't know.
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.
So is it possible to swing infinitely any way? Or is there a limit because of electric cables or something?
Unlimited, other than wear and tear of course. Electricals and hydraulics go via a slip ring.
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
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
Thanks for sharing, it is really cleverly beautiful!
I always wanted to build this in Luanti
Interesting thank you.
I've heard it's one of those ways they haze new operators.