The TRUTH About Cybertruck Frame / Hitch Snapping In Half! (Bearded Tesla rebuts WhistlinDiesel)

[mongo]

but the spike when the F150s front tires snagged the ditch when being pulled by the CT..

not snagged, the F150 braked instead of continuing to reverse

however, I would hope Tesla looks closer at the design holistically for any potential ‘overlooked’ stress risers local to the area where the separation happened.. clean cut all the way across uniformly..

Which is exactly what you would expect when an overstress is applied vertically upward to the hitch. The casting was hinged up by the steel receiver cross bar and split at the fastener hole.

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[igs]

Yep, if the block didn't move and the frame didn't bend and both materials were completely incompressible, infinite force would be required.
Thankfully this was not the case and the impact only had high force loads versus compressing matter into a singularity which would then have consumed the Earth followed by the Solar System, Milky Way, and the rest of the known universe.

Block not moving was meant to clue the reader to the concept that the displacement was at the sub inch level and thus 100k pounds was not an impossible value.

See also: sonoluminescence

Did you drop out of basic high school physics? Because had you not, you would have learned the force exerted on the truck by the concrete slab cannot possibly be greater than the force exerted on the concrete slab by the truck. It in fact must be equal.

 

[2DVS4U]

I have owned a lot of Chevrolet, Fords and Dodge trucks over the years 1/2 tons -1 tons and jerked a lot of trees out of the ground, yanked other vehicles around, pulled overloaded trailers and never had a hitch or frame break off, I have been able to bend frames/hitches, break motor mounts, tear-up transmissions, snap chains/hooks and do all kind of other damage but never have a hitch break completely off so any real truck guy is going To eat this stuff up and no matter how much math you put to it steel bends and aluminum breaks so if you plan to drop your truck/hitch on the concrete then jerk a vehicle with a chain there might be a problem otherwise you should be ok.

P.S. I Love my Cybertruck

 

[mongo]

Did you drop out of basic high school physics? Because had you not, you would have learned the force exerted on the truck by the concrete slab cannot possibly be greater than the force exerted on the concrete slab by the truck. It in fact must be equal.

I though the discussion was on the level of the forces, not that the truck faired worse than the block. And that in that discussion, we need to know what level of force is possible before branching out into material deformation which contributes to limiting peak forces by decoupling part of the mass.

 

[Gilbertus]

From The Bearded Tesla:

The Tesla Cybertruck is unlike any truck before it, and although some are attracted to the truck for that very reason, the way the truck is built is also very different from traditional trucks. When it comes to the structure of the Cybertruck, no compromises can be made given the high levels of claimed capabilities.​

​

YouTuber WhistlinDiesel just recently posted his long awaited video where he utterly destroys the Cybertruck. In this video, he submits the Cybertruck to a gauntlet of torture that would destroy any truck, and in the end, the truck was still functioning somehow.​

​

Comparing the Cybertruck to a "real truck" was the purpose of the video in question, and in that torture testing, a critical failure occurred in the structure of the Cybertruck. While pulling a stuck F-150, the rear end of the truck completely snapped off.​

​

At first it was hard to understand how this could possibly happen. At closer inspection, we can clearly see the truck failed at the casting, which is the frame of the truck. Essentially, the casting snapped in half, releasing the trailer hitch with it. Left with a snapped rear casting and a tow hitch that has completely let lose from the truck, it raises a lot of questions about the strength of the truck for towing.​

​

It is extremely important to understand how a casting works, how the Cybertruck is engineered, and the circumstances leading up to the ultimate failure in this case. The Cybertruck is undoubtedly engineered to be extremely strong, and even claims the designation of bullet proof. But all vehicles, no matter how tough, do have failure points, and in this case, the abuse the Cybertruck was submitted to ultimately caused a catastrophic failure.​

​

During a segment of the video, the Cybertruck is driven across a row of 4 foot culverts. At the end of the row, the Cybertruck gets stuck and is pulled out with the F-150, and when it clears the last Culvert, it is dropped with force on the rear of the truck and the Culvert and then again on a concrete spike on the ground.​

​

The Cybertruck is rated to tow 11,000 lbs and a tongue weight of 1,110 lbs. In this case, a more than 6k lb truck was dropped right on top of the trailer hitch, and rear structure of the truck from a height. The vertical forces that the rear of the truck were submitted to were well beyond that of any truck on the market today is rated to handle. This ultimately led to the failure we later see when the F-150 is attached to the rear of the Cybertruck and pulled hard.​

​

Having towed nearly 10k lbs across the country, I can say from experience and with confidence that the Cybertruck is more than capable of towing massive loads. It is also safe in doing so and to submit the truck to destructive testing does not represent the trucks overall structural strength.​

I find Whistlings videos fuinny. Why ? Because he is completely nuts.

But is it any wonder that a hitch designed to hold 499 kg vertically is breaking, when you drop an entire 3,5 t CT vertically on it ?

No: end of discussion.

 

[DJAlan2000]

I have owned a lot of Chevrolet, Fords and Dodge trucks over the years 1/2 tons -1 tons and jerked a lot of trees out of the ground, yanked other vehicles around, pulled overloaded trailers and never had a hitch or frame break off, I have been able to bend frames/hitches, break motor mounts, tear-up transmissions, snap chains/hooks and do all kind of other damage but never have a hitch break completely off so any real truck guy is going To eat this stuff up and no matter how much math you put to it steel bends and aluminum breaks so if you plan to drop your truck/hitch on the concrete then jerk a vehicle with a chain there might be a problem otherwise you should be ok.

P.S. I Love my Cybertruck

Yes, but did you pull those things AFTER driving it 'airborne' and crashing into the ground, over culverts and other concrete blocks and do all the crazy other stuff that the idiot in the video did... All BEFORE they pulled on the F-150 to get it unstuck?

I am willing to guess that all that they did to that truck PRIOR to pulling the hitch off had quite a bit to do with it happening...

BUT, keep in mind that these guys were actually OUT TO DESTROY A CYBERTRUCK! That was their main purpose and they were going to keep going and going until they did just that... I just wonder if they also gave it some 'help' with a few well placed cracks, drilled holes (that weaken but don't show much), etc... I am reminded of all the other 'fake' news shows that did these kinds of things... Like when NBC literally used EXPLOSIVES and 'blew up' a pickup truck to get their story on how if the truck is hit from the side it could make the gas tank explode... Or the many others... Like how they showed a bunch of Tesla's unable to charge when the power was out, but didn't show the CLOSED DOWN GAS STATIONS (3 of them) about 500 feet away... Guess they didn't want to remind people that GAS PUMPS need "E" as well...

 

[firsttruck]

Yes, but did you pull those things AFTER driving it 'airborne' and crashing into the ground, over culverts and other concrete blocks and do all the crazy other stuff that the idiot in the video did... All BEFORE they pulled on the F-150 to get it unstuck?

I am willing to guess that all that they did to that truck PRIOR to pulling the hitch off had quite a bit to do with it happening...

BUT, keep in mind that these guys were actually OUT TO DESTROY A CYBERTRUCK! That was their main purpose and they were going to keep going and going until they did just that... I just wonder if they also gave it some 'help' with a few well placed cracks, drilled holes (that weaken but don't show much), etc... I am reminded of all the other 'fake' news shows that did these kinds of things... Like when NBC literally used EXPLOSIVES and 'blew up' a pickup truck to get their story on how if the truck is hit from the side it could make the gas tank explode... Or the many others... Like how they showed a bunch of Tesla's unable to charge when the power was out, but didn't show the CLOSED DOWN GAS STATIONS (3 of them) about 500 feet away... Guess they didn't want to remind people that GAS PUMPS need "E" as well...

Yup there are documented staged incidents.

One huge staged incident was in 2011 against the original Tesla Roadster and was by the world famous British TV show, Top Gear.

---------------------------

Tesla vs. Top Gear
March 29, 2011
The Tesla Team
https://www.tesla.com/en_gb/blog/tesla-vs-top-gear

When Top Gear reviewed the Tesla Roadster, the episode that aired contained lies and misinformation about the Roadster’s performance, behaviour and reliability.

.....
In the episode, Tesla Roadsters are depicted as suffering several critical “breakdowns” during track driving. Host Jeremy Clarkson concludes the episode by saying that the Roadster doesn’t work.

Specifically, Top Gear misrepresented that:

1. The Roadster ran out of charge and had to be pushed into the Top Gear hangar by 4 men.

2. The Roadster’s true range is only 55 miles per charge (not 211).

3. One Roadster’s motor overheated and was completely immobilized as a result.

4. The other Roadster’s brakes were broken, rendering the car undriveable.

5. That neither of the two Roadsters provided to Top Gear was available for test driving due to these problems.

The breakdowns were staged and the statements are untrue. Yet the programme’s lies are repeatedly and consistently re-broadcast to hundreds of millions of viewers worldwide on BBC television and web sites, and on other TV channels via syndication; the show is available on the internet, and is for sale on Top Gear DVD’s around the world.

Tesla wants people to know the truth, and correct the public’s misperceptions. The Roadster and its EV technology, as well as EVs generally, have been unfairly and viciously maligned by Top Gear.

Tesla simply wants Top Gear to stop rebroadcasting this malicious episode and to correct the record, but they’ve repeatedly ignored Tesla’s requests.

---------------------------

 

[Crissa]

Did you drop out of basic high school physics? Because had you not, you would have learned the force exerted on the truck by the concrete slab cannot possibly be greater than the force exerted on the concrete slab by the truck. It in fact must be equal.

Well, yes. But.

The energy has to go somewhere. It doesn't remain equal.

-Crissa

 

[SCTesla]

That's not right
4 feet =1.2192m
H=1/2*a*t² +v*t
a=9.8m/s², v=0
t=sqrt(2*1.2192/9.8) = 0.5 seconds
0.5 s * 9.8 m/s² = 4.9 m/s
4.9 m/s = 11 MPH
Kinetic energy = 1/2*m*v²
m = 1500kg
Ke = 1/2*1500*4.9² = 18kJ
Which is the save as the inital potential energy
Pe= h*m*g = 1.1292*1500*9.8 = 18kJ

Now the critical part, how much force to stop it?
A Joule is 0.7376 foot*pounds
18kJ = 13277 lb*ft
So stopping it evenly over a distance of 1 foot requires over 13 thousand pounds of force
Over two inches requires 80 thousand pounds of force.
The block didn't move...

As a check, stopping it over 4 feet requires 3319 pounds which is the original weight (ignoring rounding errors). Note, we need to counter gravity also, so it really takes double the weight to stop it in four feet.

Best post ever

 

[Jayse]

Wait. Youtube's not real?

 

[Macgyverfever]

Is there a quiz on this later? I sorta skimmed all the maths

Spoken like a true IT person bahahaha

 

[sean-techventures]

Couple things not mentioned - the CT was partially on the ground when the back end fell on the culvert, so you can't attribute the entire weight of the vehicle to downward force. Either way, it was more than it was designed for - we can all agree on that.

What I think is the bigger concern that we seem to all gloss over is - if this happened with a traditional truck -if it was bent (which imo I don't think box beams would bend even at the forces applied here), they would bend it back (common for frames to be "straightened") or perhaps peice in new rails (cut out old, weld in new).
What is the remedey here?

 

[ModelXer]

Whaaaat? An influencer? Clickbait? Noooo

 

[rrizzi7210]

I'm proud/comfortable to say I don't watch or believe idiot looking YouTube/ers videos-simply waste of time & energy.

It's irresponsible to literally destroy (under the false impression of testing at best), hundreds of thousands in finished vehicles. It just shows he has more money than brains.

 

[rrizzi7210]

I have a few issues with how the "YouTuber" (nameless is key here) did his testing.

1. All vehicles involved in testing would need an array of sensors (namely accelerometers) all over them, logged at frequent intervals and with vehicle metrics available from all systems on all vehicles.
2. Multiple onboard and offboard cameras with high-speed shutters synced to the same timecode source for post-test analysis.
3. At least three to five vehicles of each type for repeat testing to allow means analysis.
4. Access to Tesla's internal engineering documentation, stress analysis, and design specs is needed to compare the above results so conclusions can be drawn.

I did not watch the entire video because this is sensationalized, irresponsible destruction of property regardless of who owns what since the testing was primarily aimed at edge cases and performed subjectively at best for what seemly was the purpose to get "clicks."

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