The stainless steel body of Tesla’s Cybertruck is reportedly leading to issues with gaps in between the panels::The Cybertruck’s steel is made in “coils that resemble giant rolls of toilet paper,” WSJ reported.
Watch what happens when people eventually discover what completely flat panels of sheet metal do in heavy wind.
There is literally a reason why no other auto manufacturer uses flat body panels on cars.
Just so I know, what does happen?
they get real flappy
And LOUD.
Metal does not like to compress at all. But when you make it really thin it will be floppy like a spring you might find in a pen or wind up toy. However you can make it stiff again by making it curved so the sheet has structure/mass going on all directions. Infact believe it or not cars during the 1960/70s had quite a bit of curves dispute being a brick. And that’s because they didn’t want the panels to dent easily. So when a car has flat faces like the Cyber truck. Those panels don’t even have subtle curves to give them structure and they are soo suspectable to dents that a simple brease does the job of denting them.
I assume the flat panels have an aerodynamic effect like the underbody of race cars. They ultimately create forces sucking the surface into a direction. And since on the sides it will be never stable it will flap around all the time. You can see that the most with the vertical fin stabilizer of Formula 1 cars. https://old.reddit.com/r/F1Technical/comments/nd2ayw/alpine_flexible_rearwing/
Here is a lot of wobbling and while the vertical changes are intended, the horizontal ones surely aren’t and they tried to make it as stiff as possible. Certainly nothing a production car would achieve.
Correct me if I am wrong, as I didn’t study this particular area.
The Cybertruck’s steel is made in “coils that resemble giant rolls of toilet paper,”
All steel is shipped from the steel mill in coils just like that.
Other manufacturers of all manner of stainless products seem to have figured out a solution to the problem.
Other manufacturers of all manner of stainless products seem to have figured out a solution to the problem.
Two design choices together probably make the problem multiplicatively worse:
- Flat panels are not anywhere as stiff as curved panels.
- Mechanical parameters of the stainless alloy they’re using (eg it might retain the coiled shape more than some other plain steel alloys).
I can’t get over the flatness… those panels surely rattle too? Or do they void-fill the doors and body with something?
Flat panels are not anywhere as stiff as curved panels
Same for windows. So much for “thermonuclear explosion-proof glass”, Elon.
Also, the shape has horrible aerodynamics. If it had a combustion engine, they couldn’t sell it in large parts of the world due to fuel efficiency.
Don’t older cars have mostly flat panels? So it should be possible, right?
How old?
Early 1900’s: Yes. Metal panels had the same problem, timber panels did not (their thickness stops them from flapping).
Late 1900’s: I don’t think anyone used flat? There were definitely designs intended to look flat (esp 80’s and early 90’s), but there were still subtle curves to those panels to bias them and stop them flapping, as far as I recall.
Happy to be proven wrong :)
but there were still subtle curves to those panels to bias them and stop them flapping
Okay, that explains it. Thanks!
Seems like tesla has an answer too:
sell the poorly made trucks to rubes while you crank out more as cheaply as possible.
The regular Tesla cars have inconsistent panel gaps already, I feel this is a production issue, not a material issue.
You mean the thing everyone said was going to happen actually happened. Lmao
LMAO X2
Worked for a car manufacturer doing statistical analysis on gap & flushness all over the exterior… And the door gaps are a bitch to get right. Probably the most difficult ones over the whole car. All the manufacturers struggle with this to a degree. This is also the one place where part quality is probably most critical.
The other gaps are usually handled by designing the angles in a beneficial way etc. When they show up in a bigger way it’s almost always bad design.
Replacing car doors with ones from a junkyard is always fun too.
All steel coils resemble giant rolls of toilet paper no?
All toilet papers resemble miniatures of steel coils as well
Ah but how do we get the clicks if we don’t sensationalize everything?
Tesla’s quality control just reflects Elons concern for all his biological children.
What a surprise! The other well known stainless steel car, the Delorean DMC-12, is FAMOUS for being a huge pain in the ass to work on. Dents and dings are tremendous problems, and stainless steel is super heavy.
Not to mention all of the manual labour it took to make all the panels to fit properly. No 2 delorean were the same
What a shock 🙄
Flat panels suck for resistance to bending, the compound curves and folds pressed into most car panels give them more rigidity
This isn’t even the first time this has happened to a Tesla, at this point this particular problem is just expected.
that the truck is not designed or built right has been obvious from the getgo. Similar issues are found in all Tesla products, i’m not sure why we’re pretending otherwise
electric ground vehicles are not going to save the world
No, the world is screwed, but if I could not have to breathe all the exhaust I’d be all for that.
Well at least Elon can pretend that all the panels were within 10 microns of gap when they left the factory, and it totally warped 2 cm (20000 microns) on the way to the customers.
So wait. You’re telling me that materials can expand and contract due to many conditions such as shifts in temperature? Ya don’t say (that was directed at Elon, not you).
Sure, he could say that. It’s still his/Tesla’s fault. Shipping the product is part of the process, and they’d still be responsible for that (or should be at least. Who knows in this dystopia).
He’d probably just say that it arrived in perfect shape, the customer just fucked it up and are lying. Or something like that.
Seems like the answer here is “You’re an idiot if you buy Tesla products”.
Essy lesson to learn, imo.
2 million idiots clambering over themselves to preorder this brainfart of a vehicle.
Yeah it looks like what a toddler would draw if you told them to draw a truck.
Panel gaps are just a ubiquitous feature of a Tesla. This isn’t a surprise, and the apologists will say it’s no big deal.
You should see the videos of model Y owners (a model they’ve had many iterations on) roll down their window during rain to get a drive through order and the water pours into the open window directly onto the, you guessed it, button console used to open/close the window and DOOR. I’m sure that won’t eventually cause problems. With OPENING THE DOOR.
And it’s not just falling rain, it literally channels rain from the glass roof directly into any open window. It’s hilarious.
