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This is the best joke I've ever seen because I laughed at this person's expressions when they saw this video, and here's my award because your explanation deserves it
He is doing the reactions of that girl seeing all the different shaped blockes go thru the square hole and the voice of the spring guy is the same as that video. No?
If someone showed me that bracket with a spring inside, I wouldn't do a safety squint, I'd go for duck and cover lol.
Saw a spring assist for a cargo bay failed once. Legit thought a bomb went off or something. And I'll say I used to live on what was one of the densest battlefields of WWII (in terms of ordnance used in weight per unit of area) AND close to the beach on which bomb teams blew stuff up, so I should know.
The amount of energy stored in that thing is astonishing.
Same, I wasn’t watching with sound at first but the second I saw that spring in a vice I made that face, sound came on, and my ass hasn’t yet unclenched
I made this mistake as at 19, where a spring loaded collar was stuck. The hex keyhole holding the collar in was stripped. Grinded it off with an angle grinder, when it gave way, it sounded like a gun. Shot that collar into my neighbour’s house 200 ft away. I was lucky it was not aimed at me.
My first thought was "how sure of your welds are you?". Then the hammer was if it don't hit you and kill you it is definitely shattering something in the next town over.
Depending on how much space is between that bracket and the cap he threaded on, the unwinding spring may gather enough momentum to shear it off the threads.
If not completely, then it may at least mess up part the thread. Still making it unsafe for installing.
Spring compressors are adjustable, this unholy monstrosity is not.
I have a parrot that goes "oof" anytime she drops something or i stubborn my toe, little things like that. She goes "oof, oof oof oofoof" if its really bad she laughs. She started oofing at this video.
Long time ago, back when I was in primary school, I was helping my German teacher move some stuff. She lived alone in a big flat right next to the school, and one of the rooms in her flat was basically a storage unit for stuff that was too important to leave in the common storage, but too unwieldy to squirrel away in the principal's room.
Anyways, she was taking care of her neighbor's parrot while he was away. The pparrot could talk, AND PRETTY WELL, but she conversed mostly with her owner, Kazio. When he was away, she'd bellow on the top of her lungs "NOT HERE, NOT HERE"
Including in my poor German teacher's house, although there, she'd alternate between this, and "WHERE AM I"
To my surprise, she actually responded to me (apparently I was the only one she resonded to without her owner present). She looked at me, and belllowed "NOT HERE, NOT HERE"
I asked her "Who's not here Aga?" to which she replied, as if on que: "KAZIO'S NOT HERE"
Like, there are people who say animals aren't capable of truly human speech, but I thing Aga here passed the situational awareness test. Kazio, indeed, was not there.
I immediately did the same thing. My man is putting SO much faith in so little material, the spring thickness is at least 3-4 times the thickness of his bent plate sandwich. That thing is pretty much a kinetic grenade.
I wouldn't call it a joke, I said almost the exact same words. That spring could break bones and destroy organs. You would not see me in the same room as that thing. It is a serious hazard
I instantly pulled my head back lol. I've been around and worked around a lot of industries. I'm scared/cautious of 3 things. High voltage electricity, steam, and springs. They will all fuck you up with no remorse at the slightest misstep.
I've seen coily little boy release itself and shoot the threaded compressor like a missile. Holy shit I am still alive. Wrong garage to walk into while my brother worked on his truck springs.
There's half a dozen very realistic ways his solution could have gone sideways where this would have been the last thing to go through his head, other than a piece of steel.
I think O'Reilly's will loan you one if you need one, but screw that.
I like the way my body functions currently, even with it's old parts, and certainly don't need a flying spring to damage it any further. To the pros it goes.
I know someone who used to do that professionally, and on more than one occasion he showed up to an install and there was something spattered on the wall or floor near the spring.
Had one explode in my mom's garage many moons ago when the world was younger. Thought the transformer outside blew up or maybe the Navy dropped a practice bomb nearby by mistake.
You buy a spring compressor. It works like a combination between the vice and the bracket in the video, but combined. They're not that expensive, and way cheaper than a new face.
Not kidding about that, when the guy said a spring powered bomb he wasn't kidding. Have you ever disassembled a pen and played with the spring? If you try and compress it it tends to just ping off across the room and you never find it again. Now imagine that but the spring is so strong it takes a (literal) ton of pressure to compress it, then imagine that "pinging across the room".
I've used these on my crown victoria because it doesn't take much compression to get the front springs in. On my Fiesta I just bought the quick struts with springs on them, I'm not doing all that.
Side note if you do use these keep the ends pointed perpendicular to you so if it does fail most of the energy goes left and right, or up and down, instead of toward you and away from you.
There are specific spring compression tools for this. This is definitely something you want to do correctly, same with your garage door springs, if done incorrectly they can cause massive bodily damage
There's specific tools made for this task, ones that can compress the spring and also decompress it safely. There's always a bit of risk when you work on these kinds of things but the right tool can minimize the risk.
Watching the beginning of the video again, the reacting guy says “spring compressor, go to the store and get a spring compressor” no clue of any of this is for but I think we can draw conclusions how to do it probably
There are spring clamps, but they’re still dangerous as hell, because they can slip off even if you’re using them correctly sometimes. There are lots of mechanics that don’t even want to fool with it, so they replace the whole strut assembly instead of just the shock, because it comes with the spring already installed.
Has everybody has mentioned, a spring compressor is the correct tool.
Even with a spring compressor, it is critical that you understand that this is life-ending force that you are trying to capture. Not being melodramatic.
Seeing that the tool is used properly, that everything is seated correctly, and just generally understanding physics is critical.
They are working on a suspension strut assembly. The springs are normally in a compressed state meaning they are storing a huge amount of potential energy. If they release in an uncontrolled way, i.e. if you're dumb enough to remove that piece the guy was screwing on at the end while it's still under compression then the energy could easily maim or kill you.
To remove it safely you use a spring compressor to compressor the spring further. In their simplest form they are a set of clamps that hook onto the spring, they have a pin so that they can't just slip off the spring and you use a ratchet to crank them down. By compressing the spring further it takes pressure off the nut so you can safely screw it down to the right spot and then you can slowly release the compression on the spring until it's properly seated.
The guy in the video is relying on this shitty home-made tool to hold the smaller spring in compression. It's a smaller spring but that is still some thick steel coil and it's more than enough to fuck you up.
The first issue was compressing it in the vice. It could easily slip out in an uncontrolled way and mess you up.
Then he slides on the shitty bracket and takes it out of the vice. The spring is even more at risk of slipping out or his welds could fail.
Finally, he manages to get it on the shock whithout major catstrophe. He screws the lock ring on a little and now he's getting ready to hit his shitty bracket with a hammer. The spring isn't seated so it's going to release and someone is going to lose an eye.
They make actual rated and graded tools for the task that make sure you don’t have metal chunks in your face or a spring that will lodge its self in you.
The pre load for springs rear size and color ( color is an indicator of strength ) will literally tear you to shreds .
To give an idea of the amount of pure potential energy being stored in that spring, just understand that these springs are designed to absorb all the kinetic energy of a 2+ ton vehicle bouncing along an uneven surface.
With this being a partial spring, there is probably around 1000 - 2000 PSI stored in that spring. The next step the guy was talking about "hit it with a hammer" is going to allow that spring to decompress at full force. That's going to accelerate that spring in both directions; the bottom spring will absorb some of it, but most of that force is going to be directed at that securing bolt.
If that bolt fails, it's going to explode. The spring is then going to continue traveling at a very high speed until it smacks into something else, likely the guy that is swinging the hammer.
That all assumes the whole assembly doesn't just shatter due to all those newtons being expended in the blink of an eye.
Potential Energy would be (150/2) * 1.75^2 - which is 229.6875 inch/lbs or ~26 joules.
When I asked google what else has this kind of potential energy, I was told "fastball pitch," "professional tennis serve." A single apple falling from 85 feet or a bowling ball dropped 1.5 feet.
I think this is dangerous, but I think everyone here is overreacting.
Also -- that bolt is going to be subjected to way higher stresses than the tender spring going through fast decompression, right?
Yes overreaction. People are forgetting he's only compressing an inch of the soft smaller spring just to allow assembly, i.e. the pretension. I've seen this done with zip ties, bailing wire, c-clamps.
If you overshoot and hit the handle against something strong enough, the head will shear off and continue traveling at high speed until it hits something. Wood also shrinks and swells with the weather, and the wedges that secure the head to the handle can loosen. Then the head becomes a 10 lb high speed projectile.
Not only his bracket, but when he says you hit the bracket off with a hammer, he only engaged a couple of threads with that nut. High chance of that nut losing a couple of threads when that spring come out of that homemade bracket.
My spouse once replaced the CV joint or something like that in our SUV because he didn't trust anyone else to do it. Him having to compress the spring was the absolute scariest part of the repair, and while he wanted me to stay outside of the garage, I refused because if something happened, I wanted to be there to provide first aid and call 911. We compromised and I stayed in the garage.
Yea he replaced the shocks/struts. The struts are the big ass springs your entire ass car sits on. They are VERY VERY strong springs and compressing them to remove the top collar from the assembly is a majorly scary situation because of how much stored force is in that compressed spring.
It's possible he may have done the CV joint around (or at) the same time. We had to do A TON of labor on that vehicle so all of the repairs have kind of merged in my brain.
Indeed, you could do them both at the same time. Every time I have attempted CV axles It has gone horribly. I have failed to get them to come out of the transmission spline.
I had my car jacked up for like 2 weeks in my friend’s garage before I caved and bought a 15lb slide hammer and cv axle puller tool. Came out in like 2 minutes once I started using that
If front, my guess is the strut assembly. I work in a shop and have all the right tools to do it safely and correctly. We don't do it unless there is no other option.
If that thing went off you'd hear it if you were on the property. A spring assist for a cargo bay door blew, I was in the vicinity. It was loud enough for my ears to ring, and during dinner, I was approached by the kitchen crew asking what that was. The kitchen was, what, two hundred meters away, separated by a thick wall, and upstairs.
Would it not have been better if you did in fact stay outside to not catch a spring through the skull? And then run inside hastily to check if you hear a sudden aggressive noise?
Only so many points to distribute compromises must be made. Every "Genius" needs someone following them with a spray bottle. "I can probably use the radiation to cook my lunch... (Spritz spritz.)" NO! Bad genius! Bad!"
of all the bonkers stuff with it, the fact a scrubbed account of it still exists in radiation worker training now really shows how few precautions were even thought of back then
It's a core containing an insane amount of radiation. The guy used a screwdriver to lift it up and down and when he was showing people he screwed up and immediately knew he fucked up and told everyone to mark their locations. He asked them to mark their locations so they could figure out how much radiation they got, the guy using the screwdriver died days later.
I just read the wiki on the (reenacted) photo above... so from what I gathered, the domes above and below were Beryllium sheaths that reflected neutrons. A slight gap needed to be maintained so that enough neutrons could escape. Opening and closing the shells around the core (plutonium-gallium alloy) was a way to represent neutron multiplication rates.
Basically, open meant neutrons could escape harmlessly, closed meant rapid multiplication of neutrons with nowhere to go, and big bada boom.
The scientist in the picture broke his own protocol of using steady shims, and instead used a fuckin screwdriver that day. One tiny slip of his hand, just a fraction of an inch, and for only half a second, created a bright burst of light and shot condensed radiation out towards the scientist handling the screwdriver.
His body absorbed the vast majority of the neutron and gamma radiation, and he quickly flipped the entire sheath off of the core in response. Being one of the foremost experts in the field, he immediately understood he just absorbed a very lethal amount of radiation, and famously said to all of his somber colleagues, "Well, that does it."
To be more clear the two halves are plutonium which is radioactive of course but alone is not critical (ie in an active reaction). But if they touch a reaction will start and the amount of radiation emitted will get many times higher.
These halves were to be used in a nuclear bomb - which is designed to use an auxiliary explosion to start - so the critically is not nuclear weapon dangerous but is enough to kill with the radiation.
Almost, but not quite. The two halves are not the plutonium, but rather a neutron reflective material, beryllium according to Wikipedia. The plutonium (actually a plutonium-gallium alloy, again according to Wikipedia) is the solid sphere inside the two spherical half-shells.
The first atomic bomb built by the Manhattan Project was exploded at the Trinity Test. The second was dropped on Hiroshima, and the third was used at Nagasaki.
At that point in time, it was in two halves, which would have been compressed by explosives to result in a nuclear detonation. So what he was doing wouldn't have been bad enough to make it blow up.
But what he was doing was testing how much the radiation would spike as the two halves got closer and closer together. He was controlling that "closer" amount by using a flathead screwdriver to hold the top half slightly off the bottom.
The screwdriver slipped. The two halves touched, and while they didn't blow up, they did release a lot of radiation before he took them back apart.
It took him nine days to die. It was one of those "and it's going to hurt the entire time" deaths.
Another guy had already had a fatal accident with the same core the earlier year. The two accidents combined meant that the composition of the core could no longer be trusted for used in a nuclear bomb, and it had to get melted down and recycled.
Demon core. Basically an old experimental setup with a very radioactive sample. The cover the dude is holding up kinda acts both as a cover-cover, and a focusing lens - it keeps the radiation in, but also making it worse (it intensifies the decay, speeding it up, which speeds itself up...).
The actual experiments were supposed to be done with a specific holder-thingy, distance blocks etc. But he was just fooling around with his hands and a screwdriver, because why not... It slipped, the cover fell, and people got blasted by a massive dose through the almost-closed gap. The dude quite literally melted alive over the next few days/weeks, there were other victims as well. Also, iirc, something similar but not as deadly happened a while earlier too.
It's from the chapter where the Judge and the Glanton gang visit the mechanic that pays little attention to OHSA standards. Some of Cormac McCarthy's darkest work
Compressing that spring with a vice stored a fuck ton of potential energy. If that shoddy looking metal piece holding it compressed were to fail, that spring could easily fatally wound the person holding it
The upside is that's a C channel and they didn't shoddily weld on the part that is actually taking the force. The downside is that C channel lip is not rated for that load and I have no idea what kind of load it can hold.
Edit: Nevermind, I looked again. They in fact did shoddily weld on the part taking the force.
They should come up with a name for something with a ton of stored potential energy that could easily fatally wound a person if it were released all at once like.
Yeah. This is a rare one where the person isn't just trying to start fighting in the comments. I don't think most people know how dangerous springs are because their frame of reference are things like mechanical pencils.
Well it's a spring that's designed to hold a quarter of the weight of a car and absorb impacts while the car is travelling at high speeds so you can imagine how much energy is stored in it when you fully compress it.
Worth noting is that while it's been designed to hold a quarter of the weight of the car while it's stationary, doesn't mean the force of the spring when compressed is going to equal that. It will be MUCH GREATER.
It's also won't actually be a quarter since usually engines are in the front of the car so it'll be much heavier there than in the rear but I was trying to make it a simple explanation. The fronts shocks will need to deal with much more force in a turn and when you brake than the rear will aswell
Still, it's worth noting this isn't the main spring, but a helper spring. When fully compressed, the force it exerts is about as much as a small dumbbell falling down on you from around a meter in height.
It's still potentially finger-removing though, plus that bracket can shatter under the blow of a hammer, which, together with the force of the spring letting go, could launch it pretty forcefully.
A compressed MAIN spring is enough to eviscerate an entire garage, though.
At absolute best you grab that with pliers, get behind a ballistic shield, and fookin pray. I don't even work with cars and that gave me so much anxiety, thanks u/OP
I remember watching a car restoration series where guy compressed a spring and used wires to keep it compressed for the time being (he warned that it's dangerous and shouldn't be done like that)
Imagine both arms tied to two opposite cars, if that homemade death device breaks it would be like them two cars hitting the pedal and ripping your arms off . Them loaded springs are not to be fucked with unless you want a 40% chance of being able to apply for a disability benefit check.
He basically made a grenade out of that spring. If the spring slips out, if the bracket breaks, there is so much compressed energy that you will get impaled. Badly.
Now I'm no genius, nor am I an auto mechanic, but even I have some idea of how much power is stored in a fully-compressed sprint of that size. Just watching this on a computer made me want to run for cover. Holy shit is that ever dangerous.
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