Inside an Arbra dynamite exploder. (With explosion and danger-cats.)
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- เผยแพร่เมื่อ 16 มิ.ย. 2017
- I'm guessing from the way the rotational force changed on the hand-cranked dynamo that the two thyristors are being fired in sequence. The first one to attempt to fire the connected charges, and the second to shunt the capacitor via a resistor to turn both thyristors off and make the output safe on each firing cycle.
This device is very pleasing in so many ways. It's a proper blasting unit and feels chunky and functional. It can handle between 1 and 100 detonators wired in series, and uses just under 1000V to ensure a high enough current flows to trigger them regardless of circuit length or resistance of connections. one nice feature is that it has a built in resistance meter to give an indication of the circuit integrity before actual firing.
Here's the manufacturers website, but note that their products are not really aimed at casual users. Their main markets are quarries, mines, demolition and military applications.
arbra.co.uk/
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
www.bigclive.com/coffee.htm - วิทยาศาสตร์และเทคโนโลยี
this about sums up the entirety of this channel in one video. dangerous voltages, practical applications, reverse engineering, and explosions.
Oh, and cats.
Perfect.
Andy Rattmann agreed
I am totally happy with that.
And lots of facial hair
tenne foure!
You made the cats disappear in a cloud of smoke!
Thomas Richter 😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😭😭😭😭😭😭😂😂😂😂😂😂🤣🤣🤣🤣🤣😂😂😂
Hahahahahahahahahahahahahaha
The Magic Circle will be livid!
Considering cats got 9 lives, no problem.... on second thought, it's a great way to neuter cats, just blow their thingy off. lol
No, the cats are just ninjas!
I like how the serial number was BLST69
that serial number looks more like a label that Clive put on himself to protect privacy of the owner. It's on top of the plate and looks easy to peel off. Normally serial numbers are punched into the plate.
not sure what makes me feel more uncomfortable :D
Now you quit with that logic use right now!
AND with Clive's humour choosing BST :)
No way! he wouldn't do that, would he?
A puff of smoke and the cats disappear!
magic smoke.
I did like that 1 second disappearance by the cats! ROFL!!
Was this a special special cat disappearing special effect pyrotechnic?
I used those in UK coal mines but this is the first time I've seen inside (thanks).
A couple of points: 1. You don't connect directly to the short, thin detonator wires in a round to the exploder. A thicker "shotfiring cable" is used, all but the closest few feet can be recovered and reused.
2. The red display light that flashes to indicate discharge also displays constantly during the cranking if the circuit is not continuous.
3. The red wax is a tamper seal to discourage a fool from attempting to open the exploder underground. If the wax was disturbed the lamproom staff could identify the last user from the sign-out book. The same wax was used on a caplamp battery and head unit screws too.
I'd imagine 1kv could start a pretty nasty coal dust explosion
Yes and every coal face workers living room stereo speakers were wired with shotfiring cable, including mine.
@@markrainford1219 My Dad was a miner. That thin orange wire was everywhere when I was a lad and every shed roof was covered in black and white check squared plastic.
Yeah, but its pretty crap wire for stereos to be honest. Better using stranded copper fibre wire.
@@Steve211Ucdhihifvshi Free is not "crap". :)
3:18 how you professionally check 1000v circuit safety “I’ll just Mmmyeah mmmyeahm safe “
You do this with 240v too!
@@xcruell Old eletricans do that all the time with their fingers. But now they stopped because doctors said its bad for your hearth. I wonder why. I learned that also. Its not sooooo bad but its bad :1)
As far as actually being seriously injured/killed, something like this is quite safe actually. The circuit would only be completed through one hand, which wouldn't be seriously detrimental to your health. The danger is when the electricity goes through your heart, and even then it has to stay connected for a little bit before serious damage occurs, at least on (relatively) low voltage circuits. It's quite common for an electrician to check if a wire is live by brushing it with their finger because even if it is live the contraction of the muscles in their finger will just pull them away from the wire, thus keeping them safe
IF you are going to do this, your hands must have the palm facing AWAY from the electrical contact, so if your muscles contract from the electricity, they won't involuntarily close your fingers around the wire/contact and thus maintain the connection. Also make sure that if you were to jump or fall, that would break the contact rather than reinforce it.
@@gloverelaxis It also helps that the circuit he tested was not referenced to ground, meaning the only way the circuit could be completed was directly through one finger and one finger alone. No path through the heart, no path through the brain
Lol those cats moved pretty quick at the end
dot and comma on a paused video
+dumle29
Dot and comma don't seem obvious choices for the task, until you realize what symbols _also_ appear on those keys: < and >.
I just did a quick test and < and > also do things, but not the same things as dot and comma.
Even though I was expecting it to go off, I just about flew off my chair when it did. I know how those cats must have felt.
@@ThatsMrMaxHeadroomToYou Good!
I chuckled way too hard
AvE has damaged me. I can't hear someone say "focus!" without going "you faak" in my head.
Talking about uncle Bumblefuck, i wonder if it's his detonator. It's skookum, it's been opened already and it's used in mining.
Gameboygenius My friends and I use that phrase quite commonly since his influence forever "damaged" us. Among a few select other words and phrases he has inspired. :-)
JCGver
It's his Q36 Illudium Explosive Space Modulator
anyone know some more channels like ave and clive? i like watching mechanically inclined people disassemble things and explain internals using their area of expertise.
ash G. Most of these you will likely have but. Julian Ilett, Ben Heck, Cody's Lab, The Post Apocalyptic Inventor, This Old Tony, Tinkernut, HandTool Rescue, Photoinduction, EEVblog, Techmoan.
"Not with actual dynamite though because that would be REALLY antisocial."
LMAO
Ted M That's possible, too lol.
meanwhile his whole frontyard blew up and was covered in one giant cloud of smoke.. :D
I dont think that dynamite would've been that much worse...
Actual dynamite is fuckin cool yo
Edit: thought i should mention that i work in construction blasting
@@Fattts You can legally buy dynamite in Potosi,Bolivia.
@@mernok2001 I can legally buy it in Maine, USA as well. No permit required.
HA! How did I miss this one so many years ago. I think you had another splody box somewhere.
Cat herding with our friend Big Clive.
That was awesome and even better that you made things right again with our little quadruped friends.
Thanks Big Clive.
I still have my retro Polish splody box.
My dad was an explosives engineer with Cementation for many years after working initially down the mine (like all the men at that time), he has some wonderful mining equipment failure stories including lit gas pockets behind shaft rings being ignited by a newbie welder, idiots running charges down to the face what were on effectively stacks of batteries with wheels, men doing full back somersault holding stupidly heavy gear and landing on their feet to great applause. Ah the mine, Where Health and Safety was a decent snap and a good pair of braces.
The Bear That Herds Cats: A Big Clive Story
Could be a wonderful childrens book!^^
For some reason I could see Clive sitting in a library doing reading circle for the kiddies. He’s a likable figure!
I sprayed my drink when the device went off and scared the cats. I must be a bad person :p
Love how the cat had disappeared when the smoke had cleared, magic.
“When triggering your dynamite, be sure to lure cats away with catnip” good advice anytime!
Clive: "Cat... No..!"
*wagga wagga wagga ka-bomf*
Clive:"That should do it..."
Indeed.. That did it..
"Here cats. I have cat drugs." :)
*_ßOOM_*
My dad worked in a mine for awhile before he met my mom, and from the sounds of things, he's lucky he didn't get his head blown off from setting off charges with a detonator that wasn't as secure or well built as this one. Glad they make safer models of these things.
From the looks of things, that black and white cat at the end really wanted to help with the demonstration, too.
As a regular watcher, I highly appreciate "and girls" when you commented about being made for us bad'uns :)
As for why two of each output component - same as the switches which will be in series. It's all about safety. You can roast one of them, and the other will be fine and still functioning, protecting against the fail-short issue. (and in the case of the switches, protecting against the contacts welding themselves shut)
Stuff like this what TH-cam was made for. Get to see things you'd never see in normal life. Just found this channel recently I love all the random stuff. I'm an auto mechanic and it's super cool to see someone do stuff like this. I'd like to make videos myself with some of the rare work I do that comes in every now and then
Cat: "Here, lemme help ya with those wires!" *BANG!* "I'm outahere!" :D
clive , years ago i used one of these in my role as a shotfirer for british coal. as i remember the output was about 1200 volts but this was an earlier version my recollection is that i turned the key until the neon light came on and then pressed the button to fire the shots. the resistance of a detonator was 1 - 2 ohms i think. because we were in an explosive environment the output was limited to a pulse of about 4 ms so there was obvious some logic in the unit. the big p on the unit means that it was a permitted device for use underground. all the explosives we used were marked with a p and a number to say what there permitted use was. i think p1 was hard rock, p3 i cant remember and p5 was for use in coal seams.
bill
Thank you for your input
Same as the type I used
there was a tale about the shotty who used shotwire as bootlaces and coupled them up to the exploder - Having decades down the Pit I can quite believe it
I loved the excitement in Big Clive's voice when he cracked the device open and saw all the goodies inside. Brilliant stuff as always.
I love this channel so much. I'm one of those people who have a very limited knowledge about technology and circuitry but I love how he takes things to bits and explains how everything works. Just really cool. Keep doing what you're doing bud!
Thee and me, too. Cheers.
27:40 love the cats reactions
I when remember i get to Clive channel for the first time. It was LED connected to mains . I watched like 15 sec and wrote a stupid comment.
Now years later Clive become mine electrician guru, each time i think about that i nod my head and laught :)
I worked for a restaurant equipment repair shop in the 1970's. The shop owner had repaired a large floor buffer by replacing a bad start capacitor. Unfortunately he wired the cap backwards. He turned the buffer on and BLAM!!!! My ears rang for five minutes afterwards and I was glad the cover was on the machine. Capacitors can do more than just shock you. They can make great firecrackers!
that wiring management in that device is oh so very pleasing. It is actually relaxing to watch. That gummy gel-potting is probably there for durability or maybe thermal protection. I imagine they are trying to protect some components from either being reverse engineered OR they are protecting them from external high temperatures of a strip-mine perhaps. You wouldn't want to combine thermal degradation of a circuit with high explosives.
Great video, I love hearing about how things work. Two of my favorite shows are "Modern Marvels" and "How it's Made" I just have a passion for learning how things work and how they are made. I may not remember it all but I still find it fascinating to hear.
Hi Clive. My dad was a blaster at the Louisa Colliery in Durham and used an older version of the Beethoven generator. There was none of this new fangled digital readout, just a neon that used to flicker when the capacitor had charged to 10000v. Then you had 3 seconds to press the buttons on each side of the box, yep that was the safety device - before the cap discharged and it needed winding again.
Bit of history and I hope you find it interesting.
Usually, after such sheenanigans my cat is a bit more reluctant to feck around with wires.......for about 2 days
quite nice seeing you take apart something that is well designed
Nearly shat myself. Dam headphones
Me too, bluetooth speaker right under my face.
Not sure why I read "neatly shat myself", I guess it works as well.
@@Tomazack I mean, if you go that far, might as well be neat about it.
At my high school which had a technical trades program, we had a bunch of old tech in the electrical dept., and one of the things we had were old crank telephone generators with the large horseshoe magnets. I was showing one off and turned the crank while holding it and got quite the shock across my hand. I measured it at 100vac later, but that was quite the surprise.
Big Clive the cat herder :D
His Catnip brings all the girls to his yard. What an enabler
Yeah, he has an ample 'purr supply'...:-D
It's not just me that has to grow the catnip under a cage then.
They still manage to get the cage off from time to time.
This thing is a piece of art, look at that wiring. Wired very neatly. Wish I could find one of these and make it into a mini portable generator with super caps.
I've used low value resistors as ignitors on my pyro for years. it's crazy cheap, and it's reproducible, quite easy to plan for complex series-parallel strings. Flash pots that have to go off precisely on the beat are another story. Isolated 110ac through steel wool, with a thyristor driven from a mic'd sound meter circuit. Right on time.
I knew it was coming, and I still nearly jumped out of my chair.
Clive, you always have interesting devices to tear apart. From "massagers" to explodey things, this channel is wonderfully random. Please keep it up!
Err, I can think of a link between... better not go there! :)
"Where's the kaboom?!? There's supposed to be an Earth-shattering Kaboom !!!"
Video of the century. catnip catnip catnip
Well that's one way to clear cats out of the yard... :P
Thank you for sharing the moment, Clive!!
Appreciate it!
Always enjoy your videos. I must say the detonator is much more sophisticated then I expected. Love the demo at the end.
It went poof! so the pavlovian lessons for the cats... Catnip...then a scary bang... maybe just maybe they hate catnip now?
they will be cautious for a while, but if nothing bad happens they will not hate it. for the Pavlov effect to trigger you need to do it a few times
@@DutchBrony Actually i noticed the pavlov effect myself. I always get schocked by metal stuff (metal railings, metal poles, metal signs) if i want to grab something like that my hand sometimes hesistates from grabbing it. I am not even thinking about it, it just happens automatic
Thank you for giving me the opportunity to view the inside of this beautiful device
Well, I underestimated those explosives greatly, I turned my headphones up to hear Clive, was too focused on him and the cats and then Bang! Damn near shat myself, made me spill curry everywhere as well... was worth it though. A very interesting device indeed, would definitely be a fun toy to have around
None of this happened.
and if it did then you are a styoopid since you had at least 3 seconds of warning after he started spinning it
I love how robust old electronics are 😀
We used those in the mines in Australia. Ours was old and 'leaked' current, so we used to press the button with a pencil to save frying ourselves. It was OK to fire series parallel circuits too. Just had to make sure you had exactly the same resistance in each parallel circuit, or one wouldn't fire. Making for a big expensive mess on the rock face
Best video yet. Great anticipation from the title, and totally lived up to it! Not sure it was cat-healthy though. The brown one and the floor departed company by at least 6 inches!
Your profile image captures your actual look so well. Its very impressive.
Woah, Clive. you did a magnificent job with this one. Seeing how those devices work was really neat-o. You might say that the entire vid was (wait for it...) Mag-Neato!
Exploding Kittens! This was a fascinating device to show!
i loved the cats reactions when it exploded , they lifted off the ground like in tom and jerry.
Today, all you need is a Supercap(acitor), 38 Gauge NiChrome, switcheS (for safety), 9V battery and jumper wires. This is good for rockets and explosives.
Seeing the twine lacing brings back memories - one of my early electronic tasks in assembly was lacing up many hundreds of yards of self-locking knots in twine used to bundle wire forms together for military prototypes. Tougher than Tie-Wraps!
You know, if TH-cam showed me this as the 1st video from you that I had seen I would be happy.
This was informative and quite entertaining 👌🏻👌🏻
27:42, well, I guess it's 8 lives left for danger-cats.
Great video Clive, and a tutorial on cat herding too, thanks!
Engineer: AHA! We'll use these tricky tri-blade screws. Nobody will ever find a screwdriver that can open those!
eBay: You can have 10 delivered to your door by tomorrow morning for $3.
I do tend to wonder why they bother with these things.
NIce, professional wiring looms. A lot of care went into building that device!
This seems like something Mikeselectricstuff would take a look at as well :D
Thumbnail almost had me think Mike uploaded another FDR video :p
Love the video as always
Wow those poor cats almost got a heart attack :'D
EpicLPer du mal wieder
FUCC I HAD MY VOLUME UP REAL HIGH CUS I COULD BARELY HEAR HIM
they will regenerate, they should have at least 8 regenerations left after this
good
My kitty is always with me when I'm doing something with my hands:) How you managed to make an explosion is amazing.
Glad to see your cats listen like mine. Meanwhile, we both jumped when the explosion went off! Love the channel!
you should attach a power drill to the crank
Love the engineering in the box.For me though a pp3 on the little pro to ignite will always be a foolproof back up if the lematire fire unit goes duff.
Sweet.
Finally a review of the Illudium Q-36 Explosive Space Modulator
Bought our house... and found a whole bucket of blasting wire with solid core. I use it for all my projects.
That moment when you said "we shall blow stuff up" and then cut to a shot of you next to a cat was f*ckin priceless. XD
RIP Headphone users. 27:41
One might argue you should have seen it coming.
Well, I'm not constipated anymore!
I've learned to have normalization enabled when using headphones.
I was expecting a sharper bang, but I really enjoyed that show at the end
Deafness is probably why it's named Beethoven. 😄
27:43 I was wearing headphones and increased the volume to be able to still hear him when THIS happened. 😅
I really enjoyed this one. Thanks BigClive.
3:18 How to test for high voltage. Flick your fingers across the wire while uttering the magical phrase "mnya mnya safe".
Potential new Pet, in Pet Sop: "what did you say your name was?" - "Big Clive, see you jimmy, etc." - "Well you can fuck off, I'll wait for the next customer!"
Perfect cat clearing device. I require one. 😏
I really enjoy watching these videos even though half the time I have no idea what's going on, no electrical background of kind, I have however learned a few things from Clive so that's nice
That was ace. Every lads lad needs one of these
I love how the cats react when the explosive goes off. China just jumps.
This looks very much like DIY off the shelf engineering, but I'm assuming they are incredibly expensive for what they are through lack of competition because of all the safety certification it would need.
Michael Parker they probably don't make very many do it's better suited to hand building. It just ends up looking rather simple.
Probably a bit of both, especially with the tight rules which are intended to control things which go "BANG!"
I have been watching your videos for a few months now.. You are halarous your coments and the things you do..Educational and funny..Thanks much
If you pause it just right you can see both cats pulling some very cool shapes
First I thought you are gonna blow the poor cat up. Btw. the internals looks like they haven't changed since the 40s.
The internals look like a design from the 70s. Not too unusual for a device made in 1987.
OMG I Just SHAT myself, turned up the headphones to hear what he was saying to the cats then BOOM! Heart ATTACK, clean up on isle 2!
SAME though im using REALLY POWERFUL LOUD SPEAKERS.
my mom yelled at me like wtf was happening xD
yes, please clean up the second island
Fucking shat myself too LMAO
Hee hee... was watchin at 2 in the morn and was prepared... turned the speakers down well in time but was still LOUD !!!
Fascinating :) Looks like a capacitor discharge design - when capacitor hits the threshold voltage the SCR is triggered and discharges it through a transformer primary producing the brief high power impulse required.
Jeez Clive that is one elaborate cat video.
27:40 gave me such a fright :(
"BLAST 69"
affirmatotive.
best serial no ever.
Nice.
69 likes
@D.O.A. still at 69 and I'm not liking it.
I love it, Clive. Great video.
This channel is so wholesome
Are those your cats?
I believe the wire used is 20-24AWG solid wire, typically refered to as "bell" wire in the US, as it is what is normally used to wire door bells.
Yes, Germany has its Klingeldraht as well. :-)
+Patrik Samuel Tauchim yeah, that wire is used for door bells and phone lines for at least 50 years pretty much everywhere.
And smileys. Thousands of smileys.
LOL, That last bit convinced the cats they had better things to do.
Big Clive has made the best cat video on the internet without even trying. Legend
the Adult fidget spinner
Cats sure love to see shit go on fire
The noise it makes when you crank it is very satisfying for some reason
Watched your videos for awhile now - cool to see the man behind the voice... Nice beard! Keep the vids coming and I'll keep watching. :P
So that's how the cats on Man lose their tails.
Typical British device - solid, hand made (look at the wiring loom) very 1950's in appearance. Would have thought Tchaikovski 1812 would have been better. Excellent cat / local wildlife scarer the woodpigeon cooing away in the background won't be there now once you loosed off that theatrical thunderflash :)
The most awesome jack in the box... you just never when its going to go off!
Wow, man you surely woke me up this morning. When that thing blew my heart jumped right out of my chest! Strange that, since I once worked with those theatrical boxes when I was in the US Army with The Old Guard during our Torchlight Tattoo performance of the History of the US Army, this back in 1976 the big bicentennial celebration i became used to the explosions during the show. I don't know if those explosive devices had yet to be invented back then or if the commander was just too tight to shell out for them. What we used were a sort of fuse box with the lid cut off. Fill the socket hole with black powder the place fuse wire across the top. Made wonderful very real sounding and appearing explosions, and a fellow didn't want to be too close to the thing I would guess. Ah for the good old days.. Thanks for the memories.