cvalue13

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Also, why does the structural battery pack not count as skin? It is always brought up as proof the Cybertruck does not have an exoskeleton, yet the structural battery pack is the 'skin' for the bottom of the truck...
(and I really should have read the whole thread before responding, but it seems like I was not the only one guilty of this).
it’s easy for folks to talk past one-another here

one has to remember that after 2019 unveil one prevailing view was that Elon’s comments meant that the CT would be a unified stainless exoskeleton proper such as this:

Tesla Cybertruck Tesla Q1 2023 Earnings Report; Cybertruck Status Maintains "Tooling" Status, Pilot Production Line Photos Shown! 📸 1EEB6298-CC79-425D-BACD-9F7151C48CAC


Only later did it become clear there would be eg castings involved, upon which independent segments and panels of SS would be hung/attached

I want to be super clear about the intent of my comments:

I don’t care one way or the other, as I’m certain the final CT design after 3+ years of R&D will be better than whatever the “idea” was in 2019

My comments here were intended only to say, in effect, “people being verbally aggressive to dress-down others for their particular view of what ‘exoskeleton’ means as a matter of engineering are being pompous asses that embarrass themselves by thinking *they* have any clue what it means, either”

Again, after the 2019 unveil even Sandy Monroe thought the design would be one thing, and then he changed his view after learning of the castings, structural pack, aluminum cab framing, etc.

he has indicated that he simultaneously thinks it can still fairly be called exoskeleton-like, but not in the same manner and degree as he originally thought

so when people express a similar equivocation of the term “exoskeleton” - people should ask questions about intent, not aggressively declare “ELON IS AN INFALLIBLE GOD WHOSE WORD IS IMMUTABLE AND BOND, AND EVEN WHEN N STAGE AT A MARKETING EVENT HIS WORDS EXEMPLIFY ENGINEERING EXACTITUDE ONLY, AND ALL OTHERS ARE SUB-HUMANS NOT FIT TO EVEN LICK HIS BOOTS MUCH LESS INQUIR AFTER THE MEANING OF HIS SUPREME WORD”
Sponsored

 
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jerhenderson

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What I find very strange is that they are keeping the specifications a secret from us the very people who have placed pre-orders. Why are we not allowed to know the details of the product we are ordering?
What, are we expected to just have just blind faith??
1) don't give the competition any info until you have to
2) keep tweaking specs until you're 100% committed to production
3) have a production date confirmed

those are some reasons why.
 

CyberGus

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so when people express a similar equivocation of the term “exoskeleton” - people should ask questions about intent, not aggressively declare “ELON IS AN INFALLIBLE GOD WHOSE WORD IS IMMUTABLE AND BOND, AND EVEN WHEN N STAGE AT A MARKETING EVENT HIS WORDS EXEMPLIFY ENGINEERING EXACTITUDE ONLY, AND ALL OTHERS ARE SUB-HUMANS NOT FIT TO EVEN LICK HIS BOOTS MUCH LESS INQUIR AFTER THE MEANING OF HIS SUPREME WORD”
Tesla Cybertruck Tesla Q1 2023 Earnings Report; Cybertruck Status Maintains "Tooling" Status, Pilot Production Line Photos Shown! 📸 0abf1921076aa81c4a90bb3c17d75353


"And He looked upon the truck of cyber, with its skeleton of exo, and He saw that it was good.

And the people said 'amen'." - musk 3:17
 
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Ogre

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Insects don't have bones. The Cybertruck has an internal structure, gigacastings, bones.
Cybertruck doesn’t have “bones” either.

insects are not just a hard outside structure filled with goo. There is internal structure for their muscles to use for leverage. Otherwise they couldn’t fly.
 


JBee

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0abf1921076aa81c4a90bb3c17d75353.jpg


"And he looked upon the truck of cyber, with it's skeleton of exo, and saw that it was good.

And the people said 'amen'." - musk 3:17
Don't you mean "Musk 4:20" ?
 
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HaulingAss

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I am thinking of a small car accident, where the panel is crumpled beyond reasonable repair but you can still drive .

Depending on where the car hits, a small bingle can cause damage to 2 panels. Something so innocous to a standard build could be compromising for a car relying on the exoskeleton for rigidity.
You are over-thinking this if you think that's a disadvantage. And I don't think you understand the forces involved in a collision. Regular body panels do not absorb a significant amount of energy in a collision so they do not protect the structural parts of the car to any significant degree anyway.

In any collision, the collision is not over until all the kinetic energy has been absorbed.
 

HaulingAss

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You said:



I say deformation on impact is a good thing for passenger safety.

Or are you expecting people to come along and smash your CT with a sledgehammer?

You also didn't respond to the loadpath post, just like on the last thread about "exoskeleton".
That's because our last conversation on the same topic didn't do any good. You need a basic understanding of how loads are transferred through structures before such a conversation could be productive.

If you really want to learn, you need to understand that structures change shape when loaded. That is the key to understanding this. Your analysis assumes structures are rigid until they break or fail.
 

HaulingAss

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"And he looked upon the truck of cyber, with it's skeleton of exo, and saw that it was good.

And the people said 'amen'." - musk 3:17
The enlightened people said "amen" but the unwashed amongst them said "bullshit".
 
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JBee

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That's because our last conversation on the same topic didn't do any good. You need a basic understanding of how loads are transferred through structures before such a conversation could be productive.

If you really want to learn, you need to understand that structures change shape when loaded. That is the key to understanding this. Your analysis assumes structures are rigid until they break or fail.
Lol now you're just trying to deflect and make-up a "different" arguement by claiming something about me you could never know, because I never told you anything of the sort.

Let alone your statement is pretty meaningless to the exoskeleton arguement.

Still no load path example either, you obviously don't know what that is yet.
 

HaulingAss

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Lol now you're just trying to deflect and make-up a "different" arguement by claiming something about me you could never know, because I never told you anything of the sort.

Let alone your statement is pretty meaningless to the exoskeleton arguement.

Still no load path example either.
Sigh... it's futile.
 

JBee

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Indeed.

The skin accounts for less structure than the cabin pack and casts. It's so blindingly obvious, that you can't see the light.
 

CyberGus

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The outer panels (fenders etc.) on modern cars are decorative, and for aero. You can remove them all with no effect on stiffness or loading.

The Cybertruck panels will provide stiffness, at the very least. That makes them a structural component, and the term "exoskeleton" will apply, even if only minimally.

If the external panels provide no structure, then they are a heavy 3mm range-sucking waste.
 

cvalue13

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“It’s going to be slightly lighter than if I would have done a body-on-frame and slightly heavier than a monocoque design. The structural element of the outside skin is going to save quite a bit of weight. Having the frame made out of aluminum – instead of the steel it is normally made of – that’s also going to make it a little bit lighter and a little more nimble. It’s a little bit better than what you’d find with a body-on-frame and maybe a smidge heavier but a lot more rigid than if you have a monocoque design.”

-
Sandy Monroe, on the casting + SS panel design
Sponsored

 
 




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