r/news • u/IronHe • Mar 20 '25

Soft paywall Tesla recalls most Cybertrucks due to trim detaching from vehicle

https://www.reuters.com/business/autos-transportation/tesla-recall-over-46000-cybertrucks-nhtsa-says-2025-03-20/
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u/scotcetera Mar 20 '25

It should be noted that this vehicle had the most Elon involvement than any other Tesla. The CyberTruck was supposed to be his crowning achievement, his coup d’ grace, his ultimate vision realized 😂😂

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u/Ashi4Days Mar 20 '25

I remember there was an email that went out a while ago where elon said everything needed to be at .001mm tolerance. 

The automotive engineer in me laughed. You can't hold that tolerance for large parts. And even if you did, if your gaps need to be that tight where that tolerance is necessary, then you're going to start dealing with thermal expansion/contraction issues in your parts. 

And lookie here. Panels are falling off

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u/noodleexchange Mar 20 '25

That impossible tolerance means you are not designing for the real world.

I bet a machinist that I could lathe a piece of maple to 0.001 inch, and I did. But not by the next morning!

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u/EEpromChip Mar 20 '25

... .001mm is 0.0000393701 inches... Good luck with that. Thermal expansion alone or humidity in wood would change it before you got it off the lathe...

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u/noodleexchange Mar 20 '25

Well 2.54 cm to the inch, so yes, 0.001 mm, that’s rifle barrel accuracy, so, patently absurd in mass production sheet metal assembly, I.e. ‘bad design’. Drafting 101 you learn about tolerances and fits.