Cybertruck water capabilities? River crossing?

[Crissa]

It'll take more than a pump... You'd have to see what seals fail in what sections at what pressures as well as what gets wet and how it survives being wet. Lots of little thing to make it do this intentionally without harm.

And crossing a river is brief, but not necessarily a boat or amphibious, either.

And pushing through a flood is also brief, and may be dangerous, but so is staying in a flood!

-Crissa

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[JBee]

It'll take more than a pump... You'd have to see what seals fail in what sections at what pressures as well as what gets wet and how it survives being wet. Lots of little thing to make it do this intentionally without harm.

And crossing a river is brief, but not necessarily a boat or amphibious, either.

And pushing through a flood is also brief, and may be dangerous, but so is staying in a flood!

-Crissa

It looks like we have a possible contender for the Darwin Award in the making. Stay tuned!

Forrest Gump said: Dumb is what dumb does.

That doesn't change what makes a vehicle amphibious. It's not a bilge pump, it's the ability to transverse both land and water.

There is no limit on how long it can do this. If so, show me somewhere it says so.

https://en.wikipedia.org/wiki/Amphibious_vehicle

Time to get an education.

 

[HaulingAss]

Forrest Gump said: Dumb is what dumb does.

That doesn't change what makes a vehicle amphibious. It's not a bilge pump, it's the ability to transverse both land and water.

There is no limit on how long it can do this. If so, show me somewhere it says so.

Of course there's a limit. Do you think Elon would have used the descriptor "briefly" if he meant "indefinitely"?

It appears some people just want to fill the forums with silly BS. I mean, one would have to be super niave to actually believe this stuff.

 

[JBee]

Of course there's a limit. Do you think Elon would have used the descriptor "briefly" if he meant "indefinitely"?

It appears some people just want to fill the forums with silly BS. I mean, one would have to be super niave to actually believe this stuff.

Or so smart they could see how dumb other people are for not believing that Tesla is building a bullet proof stainless truck that is amphibious?

The difference between genius and insane is often only the perspective of the observer. For some, it's both.

Now if you could bother your shorts not to attack my own super duper wisdom, and rather resort to calling out how "impossible" a "waterproof" floating amphibious CT is, then we would actually have something to talk about.

 

[HaulingAss]

Or so smart they could see how dumb other people are for not believing that Tesla is building a bullet proof stainless truck that is amphibious?

The difference between genius and insane is often only the perspective of the observer. For some, it's both.

Now if you could bother your shorts not to attack my own super duper wisdom, and rather resort to calling out how "impossible" a "waterproof" floating amphibious CT is, then we would actually have something to talk about.

I never said an amphibious Cybertruck is impossible, I said it won't be amphibious from the factory. What is it that you don't understand about the word "briefly"? And making it truely amphibious involves more that giving it a propulsion system and a bilge pump.

As someone who has made their living on the water 24/7, I can tell you it's a lot more involved than simply claiming Elon said it was amphibious (he clearly didn't).

 

[FutureBoy]

Nobody claimed it would never sink. They said the Titanic couldn't either.
Every boat is in the process of sinking and needs a bilge pump, and for $20-30 itxs barely a big thing to purchase or throw on the lowest part of the floor.

If it takes an iceberg to sink the CT, I'll consider that fully boat worthy. I doubt I'l be sailing my CT anywhere that an iceberg would be a possible hazard.

 

[FutureBoy]

I mean, one would have to be super niave to actually believe this stuff.

I believe you. Does that make me naive?

 

[charliemagpie]

Seaworthiness ?

The tinny can safely float under reasonable conditions.

If the CT is deemed to go over water..... common sense.

 

[FutureBoy]

Seaworthiness ?

The tinny can safely float under reasonable conditions.

If the CT is deemed to go over water..... common sense.

Wait... The tinny is made of aluminum instead of SS. Does that make a difference?

Maybe someone needs to do one of these shows with various "vehicles".

 

[FutureBoy]

So we've recently seen the CT off-roading in Baja, at Starbase towing rocket engines, a bit of the crash testing results, cold weather testing in NZ (and Iceland for a video), mudding a bit in CA(?), wowing people in the city, and doing various maneuvers to show of the speed, turning radius, etc.

So, how long do you think till we see the CT in a live water scenario? You know you want to see it.

For that matter, I still want to see a snow plow, front and rear winches, and on the water side a method of propulsion.

 

[PilotPete]

Seaworthiness ?

The tinny can safely float under reasonable conditions.

If the CT is deemed to go over water..... common sense.

All you need is some FLEX SEAL! No bilge pump here!

 

[ScotinMichigan]

I recall Elon stating “the 4680 cell is negative mass” which is an engineering way of saying the 4680 cell will float! Making the heaviest part of Cybertruck buoyant, goes along with eliminating the door handles, which were points of leaks.
Power close: doors with double gaskets, fronk, charging port.
Tailgate also has double side gaskets.
Still missing lower tail gate gaskets and soft close latch to pull the gaskets water tight.

 

[Crissa]

I recall Elon stating “the 4680 cell is negative mass” which is an engineering way of saying the 4680 cell will float! Making the heaviest part of Cybertruck buoyant, goes along with eliminating the door handles, which were points of leaks.
Power close: doors with double gaskets, fronk, charging port.
Tailgate also has double side gaskets.
Still missing lower tail gate gaskets and soft close latch to pull the gaskets water tight.

It's also an engineering term for something that displaces weight elsewhere in the structure.

Which it does. The cells, when bound together, provide strength that doesn't need to be added elsewhere.

It doesn't mean it floats in any media.

-Crissa

 

[cvalue13]

I don't really understand how amphibious is so unbelievable.

Wading and floating mode
Like every good off-roader, U8 can wade. The Premium Edition can wade in a maximum depth of 1000 mm, while the Off-road Master Edition can wade up to 1,400mm thanks to the snorkel.

When the wading mode is activated, the vehicle will use its sensors to monitor the environment, water depth, wheel slip status, etc. The emergency floating mode is automatically activated when the car gets into depth over the limit.

When activated, the combustion engine will immediately shut down, Disus-P will raise the suspension to the maximum level, windows will be closed automatically, A/C will be switched to internal circulation, and the sunroof will open, providing an emergency exit. Moreover, the vehicle will display the water depth and attitude on the central control screen.

U8 can stay afloat for 30 minutes and move forward at 3 km/h by accelerating and turning wheels. It can even perform tank turns while floating. BYD highlights that it is only for emergencies such as floods and not for fun crossing lakes and rivers. Interestingly, their marketing materials showcase U8 floating on the water exactly in those situations. After the emergency floating mode activation, the car needs to be brought to a service center for inspection. BYD claims U8 is IP68 level waterproof.


https://carnewschina.com/2023/09/20...0, the YangWang,float on water in emergencies.

 

[JBee]

Seems like it is really, really hard to do...not. I mean if a "battery" company can do it right?

I think the main discussion here is that some people are annoyed that I am calling it "amphibious".

By definition, there is no limitation on how long it has to remain afloat to be called that, let alone that there is no definition of that it must float at all, to use that moniker.

So I use that term accordingly.

That then devolved into a conversation of how I'm "so silly" for suggesting that the CT will be amphibious, and that I'm endangering lives, should go back to cooking up other fantasies of exoskeletons on my barbie etc.

Note the connection between the "pro-exoskeleton-hypests" and the "anti-amphibian-jesters".

Groups of ill-informed people, repeating eachother ad nauseam, doesn't offer much room for a negative feedback loop, to bring in relevant information, to get a better approximation of the truth.

Now for one, I must commend BYD that they are in fact using the correct terminology at least.

They also highlight the fact that after "wading" to a certain depth, there will be enough displacement to actually "float" the U8. The point here is that even "if" you have a vehicle with a snorkel etc, it in no way guarantees that you will have enough traction to ford a river. For every inch of water depth you add you loose traction on the wheel from buoyancy, let alone from the water and slush you are driving through. That is the main reason water fording flooded, or fast moving rivers is a bad idea.

To overcome this problem of buoyancy, which is often the case with those that have done it before (vs those that have no clue) is that you simply open the vehicle doors to let the water in, to reduce the vehicle buoyancy, and be less likely to be carried away because you still have traction. It's important to note here, that on most vehicles, the CT included, the bulk of the buoyancy will come from the cabin air volume. So opening the doors makes it sink, and technically, if the electronic seals hold up, giving you under water driving ability, as demonstrated by the Model S video I posted previously.

In either case, the term amphibious holds true.

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