Tesla is facing issues with the bare metal construction of the Cybertruck, which Elon Musk warned was as tricky to do as making Lego bricks

    • over_clox@lemmy.world
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      1 year ago

      To build it with that accuracy would be physically impossible. Guess he forgot about thermal expansion and contraction. Guess he forgot about the weather…

      • Phoenixz@lemmy.ca
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        1 year ago

        Musk is a scammer who has almost no practical understanding of engineering.

        He (and unfortunately many after him) forgot about thermal expansion and contraction as well with his dumbass Hyperloop idea. Have a hermetically sealed metal tube with a vacuum run exposed for 200km and let’s just ignore thermal expansion. One station would have to move left and right for several meters throughout the day, every day for that, the 200km pipe somehow would need to be able to move about… His “designs” and “ideas” are engineering nightmares

    • Roboticide@lemmy.world
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      1 year ago

      Indeed, that’s about 10 to 100 times more accuracy than other automakers. Those tolerances just aren’t necessary so no supplier is going to have the tools or infrastructure in place to make parts to such a high degree. Body shop alone sees fluctuations in millimeters because industrial robots can’t do any better than half millimeter accuracy, if they’re brand new.

      • dohju@lemmy.world
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        1 year ago

        If you can even get something like +/-3 or 4 mm with say a cpk of 1,33 you are doing pretty well for a whole body.

        It’s probably a pr stunt. If this is real then they are doomed because they have not yet understood that you need to compensate tolerances and design a robust assembly that can handle this. If you are trying to get crazy high part precision you have not understood how big scale manufacturing works. This is why the Japanese are often so highly regarded in this and might be the true art of car (or large scale) engineering.