Spinning a Record to Pieces at 12,500fps – The Slow Mo Guys


Gav: Hello, sweet Internet. I’m Gav, Dan: I’m Dan
Gav: That’s DJ Dan. We’re the Slow Mo Guys Gav: A while ago we did a video where we spun a CD so fast it shook itself to pieces. Gav: It sort of wobbled and then flung out
Dan: Wobbled?
Gav: Yeah. Dan: Right, okay, well this time we got some records. We’re kickin’ it old school. Gav: Yeah, I feel bad breaking these to be honest. It’s almost like ripping a book. It’s just not to be done, is it? Dan: I know what you mean but we did- I did get them from Goodwill. Gav: Yeah.
Dan: So I feel like people are done with them. They’ve experienced it. Dan: Now we’re going to put it into a second use, a second life.
Gav: So, immortalized forever on the internet. Dan: So this is the loading procedure
If you didn’t see the previous video Dan: Then I’ll explain this something. This is actually the motor from inside of a- I think it’s a Dyson Dan: So it can spin at incredibly high speeds. Dan: I think that’s… Dan: …probably alright.
Gav: God, imagine putting a needle on this, what it would sound like. Dan: It would be- [laughs] it’s already kind of wonky. Dan: This record isn’t perfectly straight, you know, when you see them being played on the gramophone, they kind of go like Gav: Yeah
Dan: Like that Dan: I dunno if this is gonna survive long. Dan: So because we’re just using the motor from a Dyson Dan: It’s uh, incredibly fast hoover motor. That’s how it works. It spins really fast Dan: But if you just turn it on straight away Dan: It would be spinning at maximum speed and that’s kind of not what we want Dan: We want to get the gradual build-up and then eventually the breaking of the record Dan: So for that we’re going to use this variac Dan: Which means that you put the- you put a voltage through it and you can vary the output Dan: Increasing it gradually until we hit that exact breaking point we need. Gav: I’m excited.
Dan: Yeah me too.
Gav: Slightly scared, too. Dan: Yeah, it makes a hell of a noise. It’s really intimidating. Gav: Shooting on the v2640. We’re gonna start at 12 and a half thousand frames a second. Gav: I think if this works, we’ll paint one.
Dan: Alright. Gav: Paint the different quadrants so you can see it spin better.
Dan: Sounds good to me. [record whirling] Dan: The stand vice is going everywhere. This thing is so powerful it’s like shaking the vice, right? Gotta turn it down [record whirling and breaking] Dan: God, that goes!? Dan: That goes. [exclaims]
Gav: Look at this.
Dan: Oh, it’s like colored it. It’s turned it into- Oh… Dan: Geez, that’s crazy.
Gav: Where did it go? Dan: Whoa, it just got eviscerated. I think oh, look, there’s a big chunk of it there. That’s a big chunk. Dan: Bugger. Yeah, I was all the way over there and some tiny little like- tiny little fragments were like bounced off of this and went Gav: Little bits of musical dust.
Dan: Yeah dust. I think that was- You know what? Dan: I think that took more than the CD.
Gav: Really?
Dan: I think so. Dan: Look what it’s done to the wood here. Dan: It’s like embedded itself in the wood. Fully, almost, cracked the wood open. Gav: This is lethal.
Dan: I’m actually glad we put these up.
Gav: Yeah.
Dan: You know? Gav: I was getting worried that we were gonna send it across the… fences.
Dan: Well, if there’s pieces like this, then it’s possible. Gav: At this speed, it’s almost like you could play the music out of it. Dan: Yeah, this is the music speed up here.
This is what is actually-
Gav: This is slowed down to be- Oh. Gav: Yeah, now it’s warping Gav: You can see on the reflection that it’s gone a bit [makes warping noises] Dan: It must just happen at a certain speed but it’s like “And now I’m warping” Dan: It’s weird because it… stabilizes. Initially- Both: Whoa! Dan: God! Gav: Wow!
Dan: What the- Dan: There’s like a chunk of it still on there! Gav: Okay, let’s do that frame by frame. Okay, so it’s split from the middle. See that crack.
Dan: Yeah, I see that. Gav: Worked its way through. Dan: Turned into like a tree either side. Gav: So weird. Looks like lightning going through it. Dan: It pretty much does and that means that like- each of those halves is now like really vulnerable to cracking and then- Gav: And the other- Look on the left, it just goes [makes cracking noise] Dan: They just turn to glass, like- they just turned to dust. Dan: It’s kind of good that we’ve got the blocks there because it like shatters it after it’s gone. Gav: Yeah. Dan: Because there were some big chunks coming out of that.
Gav: I think we should move the blocks on the right side. Just slightly out of the way. Both: Oh! Dan: It just chipped the edge.
Gav: It just smashed on the side. Gav: I think, just for safety, we should build up one higher. Dan: You think so?
Gav: Yeah. Gav: Like, this is coming off as some ridiculous clip. Dan: [laughs] Gav: What?
Dan: Some clip. [making fun of Gav] Gav: Because we’ve got enough light, I’m just gonna change the shutter angle to 90 degrees. Gav: Each exposure is now… 20 microseconds approximately. Gav: Which should get rid of half the motion blur.
Dan: Oh, I also need a shield. Dan: I’ll just hide behind that wood thing. Dan: [grunts] Gav: Well the tree?
Dan: Too far away. Gav: Too far away?
Dan: Yeah, the wires don’t reach. Dan: Yep. [record whirling] [record snaps] Dan: Whoa! Dan: I was like, there’s not much more to give on this.
Gav: Really? Dan: Yeah, I was nearly full whack there.
Gav: [laughs] Dan: Was nearly full whack.
Gav: There’s surely no way it’s at its full speed with that on it. like that Gav: Like, the motor is only going to spin a small fan. Dan: But because- May be because the record is heavier. It’s slowing it down more, so it’s not being able to get the same rpm? Oh Dan: Yeah, this one’s cracked slightly different. It’s not in such a straight line. It’s gone like… Dan: Sideways, you can see the marks that it’s left on the brick. Gav: Really?
Dan: Yeah. [talking to Meg, Gavin’s girlfriend]
Gav: Do you wanna watch this with us?
Meg: Yeah. [record whirls in slow-mo] Gav: Kay, you ready? [record snaps]
Both: Whoa! Gav: That one was different because it cracked from the outside. Gav: See the crack of the bottom now.
Dan: Yeah. Dan: three, four, five, six, seven, eight, nine frames and it was gone. That broke really similarly to the CD Gav: Yeah, that was, because it broke from the outside, that was exactly how the CD went. And then it just misted itself. Gav: Look at the sparkle. Pretty neat-o-barrito if you ask me Gav: Let’s move everything… six feet back. Dan: [murmurs] Oh god. Dan: So much effort to move these, it’s ridiculous. Gav: So we thought we’d make it easier – to be able to do maths on this. Gav: So we painted quadrants- Well, you painted.
Dan: I say I painted quadrants. Dan: It’s not really-
Gav: The blue is questionable. It’s a sort of slightly bigger piece of the pie Dan: [sighs] You just complain about everything, don’t you? I can’t do anything right. Dan: You didn’t say, do like an amazing job of it. Dan: It was just like a basic thing. Sorry I didn’t measure it out to the millimeter. Dan: God! Gav: Shall I preface everything now? “Oh, by the way, do an amazing job on it?”
Dan: Yeah! Dan: Otherwise, I’ll just do a shoddy job obviously.
Gav: No, I like it. I think it’s funny. Dan: Okay. Dan: It’s locked in there.
Gav: So let’s play a guessing game.
Dan: Yeah? Gav: So there’s always a piece that goes straight up and doesn’t shatter. Dan: Mm-hmm.
Gav: What color do you think it’ll be? Gav: I reckon blue.
Dan: Uh, yellow. Gav: Yellow?
Dan: For sure.
Gav: Alright. Gav: I wonder what color that’ll look like when it’s… spinning. Gav: I mean, if it was red green and blue it would appear white. But because of the yellow… Dan: It’ll appear yellow?
Gav: Yeah, maybe. Gav: Let me just document your shield.
Dan: All right, well, first of all, I’ve got to be in comfort so I’ve got a nice… Dan: Recliner behind here.
Gav: Yeah.
Dan: So that I can do it in comfort. And second of all… Dan: I’m hidden behind here with the variac. I’ll, like, use my head to shield myself. Dan: Turn it on and then just like [makes whirring noises] [record whirring] [record snaps] Dan: Golly gosh me. Dan: So I ended up breaking 115 there but it’s only got this much more to give so it’s really at the limit so far. Gav: It’s hungry.
Dan: Yeah, it really is.
Gav: Hungry lad. Gav: There’s another crack from the outside, that one. Dan: Shall we see?
Gav: Yeah. [record whirring in slow-mo] Dan: Whoa.
Gav: Wow. Dan: It looks cool with the colors, doesn’t it? It’s like a really convoluted way of painting
Gav: Yeah. Gav: Blue went up.
Dan: Damn it. Dan: Without even seeing the slow-mo, you can tell which colors went where. Dan: Because, if you look, green is all at the bottom there. Follow it around and it’s all the red. Dan: Then it slowly turns to blue.
Gav: Well, then that’s why the sky is blue. Yeah Dan: Yeah [laughs] Can’t be the last of that.
Gav: [laughs] And then? Dan: And then there’s more blue and then it goes yellow. I think it broke more or less perfectly in quarters: blue, yellow, green, red. Gav: We’re now looking at this edge… Gav: …To see how much it warps. [record whirring] [record snaps] Gav: The whole wood top went- [makes flying noise] Dan: [laughs] Oh geez. Dan: Oh look at that. Look at the damage it’s done here. Both: [exclaim] Gav: God. Dan: That’s insane.
Gav: That is insane. Gav: It looks like scarring.
Dan: Look, you can see the individual pieces that have hit it. Dan: And the fact that they got more wobbly as it goes along and then come back again. Dan: Look it’s gone like, you can see a graph where it’s gone wobbly and not so wobbly. Dan: I bet if it carried on it’d be like this
Gav: [laughs]
Dan: Like a wave. Gav: That’s a way to record on to a physical medium
Dan: Yeah. Gav: Like an instant graph.
Dan: It goes like this, like that and then it comes back around again. Dan: And it goes like a wave all the way around. Dan: I bet that’s exactly what we’ll see on the slow-mo. Gav: That is a severe amount of warp.
Dan: Wow. Dan: Surprised that it even managed to stay in focus, moving around so much. Gavin : Appalling, isn’t it?
Dan: It really is. Gav: It splits in the middle.
Dan: Oh, did it?
Gav: Yeah. Dan: Wow.
Gav: I was hoping it would split exactly on the front focus line. Dan: Well, that’ll be amazing.
Gav: [laughs] Dan: I wonder what the…like- How much, centimeters wise, it was actually varying in wibblement. Gav: Guess we’ll just do one more. Dan: [shaking can with questionable expressions] Dan: Tada.
Gav: What a beaut.
Dan:Thank you. Gav: This one is being shot square. Gav: So we can stabilize it in post and spin the shot. In theory. Gav: I’ve also got the wood in the shot. So if we see any of that scarring, we’re good to see how it did it.
Dan: Oh yeah. Dan: Powering up engine, starting jet. [record whirring] [record snaps] Dan: Oh! Dan: Good lord! One came directly at this thing.
Gav: Did it?
Dan: I heard it audibly like- [recording whirring in slow-mo]; [fragmentation] Gav: There must’ve been a rebound, there’s no way it would have come straight at you. Dan: No, exactly. Must have, like, rebounded off the stone. Gav: Okay, oh, from the outside again. Gav: From the blue. [record whirring and snaps in slow-mo] Gav: So, let’s see, which bit came at you. Gav: So it came off the corner. That must have been what hit ya.
Dan: You think so? Dan: It must’ve, it was kinda the same sort of angle.
Gav: Look at how fast that’s spinning towards ‘er. Dan: I definitely- I almost felt it though.
Gav: [chuckles] Dan: So it must have been the chunky piece.
Gav: Did you say my name? Dan: [confused] Huh? A chunky piece? Gav: Yeah, it’s my nickname. Both: [laughs] Gav: Look at the 3D nature of some of this stuff. Gav: It’s just absolutely compressed. Get some side on. Dan: It looks like someone’s taken, like, mascara and wiped it on a brick wall. Yeah, it looks like something just gonna like yeah, yeah Dan: Look, it looks like someone just gone like [makes drawing noises] Gav: Found some more. Dan: You know what’s good about that video?
Gav: What’s that?
Dan: We’ve shattered all the records. Gav: Is that good? Dan: What do you mean?
Gav: Like you’re doing a record-breaking pun.
Dan: Well, yeah. Gav: Yeah, you know what, with your puns you’re like one of these. Dan: Like-
Gav: A broken record [A/N: Damn Gav!] Both: [cringes] Dan: There you go.
Gav: That was insane. Gav: We never had this cage around it last time, when it was the CD. Because it was so light, it just lost all its velocity. Gav: Like the drag from all the air just slowed it all down. This stuff. This could have gone miles. Dan: Well, the very fact that this still exists after hitting the cage… Gav: Yeah.
Dan: …tells you, like, this is super thick as well. Dan: Right in the middle, the records are thicker than they are on the outside. Dan: So the outside bits hit this and turn to dust and these would go flying but luckily… Dan: …most of the energy is taken up by hitting these.
Gav: These parts are bigger a) because they were in the center and Gav: They were released at a slower velocity, and also the label sort of holds it together.
Dan: Yeah. Gav: That was crazy. I’m glad it’s over because it was kind of scary. What I might do, I might take a picture of these… Gav: And post it on Twitter, and I’ll say “you’ll never guess how we painted these bricks”. Dan: No one will get it!
Gav: I don’t think anyone will get it.
Dan: No one. Dan: But I don’t think a record has ever been used in that way before. Gav: No?
Dan: No.
Gav: Well, that was a record-breaking record breaking. Dan: Yeah, I think it was. I think it was it.
It was a record-breaking squared. Gav: Well, that was cool. Gav: Hopefully you enjoyed that video. Feel free to subscribe to our very channel right here. Gav: We’ve got a second one as well. Behind the scenes. I play pranks on Dan a lot. Dunno. Dan: Yeah you do.
Gav: Yeah, I do. And uh… Gav: All the social medias and stuff. Thank you very much for watching. Dan: You know, um in the future…
Gav: Yeah.
Dan: …when like, you know Dan: how we have, like, archaeologists that will go to places like Rome and Greece… Gav: Yep.
Dan: and piece together all the pottery and be like, “this was used to store grain”. Dan: Do you think in the future they’ll find these and be like, “hmm?” Dan: “Well, no, glue one of these all together.”
Gav: “It appears to have been shattered apart by itself.”
Dan: Yeah. Gav: “Yeah, this is where you grow grain.” Dan: [laughs] That’s what they sound like? Dan: Or the guy from Time Team, he was like- Dan: “Right this, this”
Gav: The guy that wasn’t Tony Robinson.
Dan: Yeah. Dan: The one with the long hair.
Gav: He was clearly faking a West Country accent. Dan: Yeah, as soon as he got a Camry was just like, “oh you talk like this now?” Dan: “I just talk like this normally.”
Gav: And then cut. “Thank you. Thank you Giles.” Gav: Trailer.
Dan: Yeah.

100 Replies to “Spinning a Record to Pieces at 12,500fps – The Slow Mo Guys”

  1. Flywheels have resonant speeds. If you rotate them at that speed they will shatter, no matter how well-made they are. The physics is kind of easy so look it up if you want to know how to calculate it.

  2. I wonder how much of a wind tunnel effect you got from the bricks. I would think it would spin longer if it wasn't fighting its own wind rebounding from the brick walls. if you watch it seemed most of the fracturing started towards the openings IE the bottom or the top where there was more space for the wind to escape.

  3. So the record cracks when the out of balance forces put too much strain on the body of vinyl due to vibration. I wonder how much faster it would go before it broke if you could even out the inconsistencies in the density and balance eliminating the most vibration possible? And would the shatter patterns change?

  4. When the olden times need a new guillotine… talk to the SLO MO BROS!😂 (Srsly though… dont get decapitated by this thing)

  5. So breaking at somewhere around 9500rpm. the rim of the record would be travelling at over 300 miles per hour. Insane.

  6. Should do one with the blocks at 45 degrees so that the pieces bounce out at 90 degrees and see how far forward they come. Or see how long it takes the piece that goes straight up to come down.

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