Tesla Semi truck unveil & test ride set for Oct 26th !

Yosemite Sam1 wrote:


and that totally puzzles me, pretending knowledge of casting and advanced materials when you'll later admit to being foreign on the topic and just did remedial engineering, lol.

Oh yeah, I am still waiting for that truck with skin of made of material similar to rocket ship. If it turns out to be just like waiting for Godot, that's just $100 parked there somewhere idle and worth the admission fee for dreamin' the "best truck you'll ever own".

While it's obvious that you are able to produce words and not substance, let's break it down.
First, "remedial" engineering. My point being, when designing a vehicle, fuel efficiency is generally at the forefront of non working passenger vehicles (and all vehicles frankly, but CAFE standards apply to passenger vehicles). And the lowest hanging fruits are weight and aerodynamics.
Keep paying attention here, trying to boost you to a 1% er here....
Aerodynamics? Check. It's shaped like a doorstop, got that part right, as ugly and unconventional as it may be.
Weight? OOPs nope, missed the boat there. Ever wonder why the "weight" of the cybertruck is not published anywhere? You just found out.

Now the definition of "foreign", in this context, = strange and unfamiliar. Do you not agree, that, the fact that this truck will purportedly have almost 1/8" thick body panels with a (speculated, since Tusk's secret formula steel is not public knowledge ,or may just be marketing fodder for those overly impressed with shiny objects...I mean, he caught you hook line and sinker...)
You can explain what your interpretation of "30X stainless" is. But even if it lives up to the wildest claims out there that it is cold rolled to the point of yield almost = to tensile strength and is a 300 series stainless. Then that makes it very yield resistant, yet removes virtually all the ductility. Not a good thing, but possible to design around this constraint with extreme chassis rigidity.
Regardless you don't know what 30X stainless means or is, and neither do I, so there's zero chance you'll be able to enlighten anyone here...
BUT, if you take the most plausible theory that this "nearly impenetrable" skin is a real thing, it's so hard (brittle, but not weak, there's a difference) that it cant be formed....back to my shear and brake vs stamping. A slight deformation can be achieved (presumably) in the form of a straight bend, but there's not near enough ductility to stamp it into any complex shape that would require any large strain (fancy word for stretching). So, yup that's another reason it has to be shaped like splitting wedge with only a couple slightly non-planar surfaces. Limitations of the material used.

Now back to the giga press. Even IF that was used to stamp body panels, but it's not, it's for stamping and/or casting the actual structure, the panels are, even if as wildly hard and yield resistant as claimed, nothing special when it comes to industrial size brakes. It's a proverbial piece of paper compared to big iron and by quick "remedial" calcs, even the long side panels could easily be bent in a run of the mill 500 ton press.

And while you are probably reading this and thinking gibberish since you don't understand mechanics of materials very well, I'll just throw out the most basic real-world flaw in this plan.
This is meant to be a somewhat "normal" car, right? Like, mass produced, daily drivers, exposed to all the hazards a normal passenger vehicle would be, like collisions?
Is the hamster cage starting to turn now, or do you have it set to dreamer mode where only endorphins spawned by delusions of grandeur allow your brain to power up?
What happens in a fender bender? Well, this magical skin, if it is what is I described above (which surely you are already aware of being a self proclaimed Elon n u t humper) it will ward off shopping cart dings and minor parking lot type fender benders like a Ranch Hand bumper! Great, no more door dings and little whiskey dents to deal with.
But what happens when it get into a collision? Nevermind the practical and financial challenge or impossibility of getting it repaired without taking it to Teslas own newly formed in house collision repair center. And how much the insurance will be on something that is orders of magnitude greater cost to fix than a "normal" car? (Remember the Teslas running around today are just normal cars with a high price tag and a durable drive system) My guess is, you'd rather insure a new Lambo, Pagani or Koenisegg than this thing!

But that's just the largely prohibitive real world consumer impact.
Now lets talk safety standards.....
2 words, crumple zone.
IF you have a vehicle with a skin that is so thick and so hard/stiff that it's "nearly impenetrable" the structure supporting it will have to be equally as robust and stiff (and heavy...but we talked about that already, I guess an Aluminum structure could help here, but not in the rigidity department and ability to pass NHSTA standards for passenger and other vehicle safety...or in layman's terms, you'd never get an up armored vehicle certified by current safety standards).


So I'll presume that these types of considerations above, you'll just chalk op to the "magic" of the Cybertruck, and certainly won't provide anything meaningful to debate or disspell what I just said. But it adds the proper context to the smoke show that has been created around this vehicle.

I mean, Elon is all about makin money that folds, right? And he's now had EVs on the road for the better part of 20 years and mass production for about 10 years and popularity for about 5.
After all that, can't put another heavier duty EV on the road? Little bigger motors, little bigger batteries, technology and production capability are already there.....but there's another reason and i just explained it in less than remedial terms for you.

Will there be a cyber truck? Probably, very likely, would be bad business to not live up to the hype on at least some level.
Will it be made of unobtanium rocket ship parts? I'll place my bet on a hard NO and hold.