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Do not try what you're about to see at home.

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We consult with experts, we take every precaution

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and we have years of experience in dangerous situations.

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On this episode of Big Busters, I am gobsmacked.

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Adam and Jamie restage a backyard bonfire of ice and thermite

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that still baffles the experts.

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Next, Tori, Grant and Carrie pop up the volume

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to try to trigger a car full of rifles

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with a thumping car stereo.

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Come on.

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Fire on.

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From sound waves to shock waves, the hits just plonk coming.

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You're not a wreck of party.

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And then there's the myth of the gun with a gas problem,

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where an awkward grip could cost you your favorite finger.

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That gun has a heck of a kick.

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It's not for the faint-hearted, but there's always room

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for a chicken.

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Who are the Myth Busters?

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Adam Savage.

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Today's forecast, 70% chance of science.

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And Jamie Heineman.

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It's fun, yet deadly.

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Between them more than 30 years of special effects

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experience, joining them, Tori Belleggi, Grant Imahara,

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and Carrie Byron.

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That was a rush.

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They don't just tell the myths.

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They put them to the test.

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Myth number one is a tale of two extremes.

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All right, dude.

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Time to fire up that dial-up mode,

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and we're going back to the internet for this story.

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Oh, well, if it's from the internet, it must be true.

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You don't have to be sarcastic.

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This one's about thermite.

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And I think you'll like it.

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What is it?

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All right, these two guys, they take a bucket of thermite.

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They put it on a bunch of blocks of ice,

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and they light it with a fuse.

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And it doesn't just burn like we've seen thermite burn.

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The whole friggin' thing explodes.

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Watch this clip, man.

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I think it's actually pretty credible.

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Thermite itself shouldn't explode,

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though it burns at ferociously high temperatures.

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And you'd figure that ice would just melt, right?

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But this clip seems to show that when ice needs fire,

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the least of your worries is getting your socks wet.

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Well, they sure made our job easier.

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They showed us everything we need to set this up.

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Absolutely.

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11 pounds of thermite, 10-1-pound blocks of ice.

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And a fuse and a pack of matches set the whole thing off.

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I love it.

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Let's head out to the bottom range and try it out.

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OK.

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Now, these two know they're thermite.

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Who could forget the racing stripe

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they burned through the roof of a car

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for the better to end with a bang-miff?

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But now, before trying to replicate the ice explosion,

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Jamie wants to warm up with a trial by fire.

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Now I'd like to fine-tune what you might call

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the thermite delivery system.

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But we can also have some fun here.

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So what we're building first is a kind of pagoda

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from bricks and steel plates.

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The idea is to see how many plates the thermite burns

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through once it's ignited.

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Thermite's a mix of fine metallic powders,

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but the ideal ratio is debatable.

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Of course, we want the best burn for our buck.

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So this penetration test should be a great way

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to try out Jamie's special blend.

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From here, it's all quite simple.

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Jamie sets two matchbooks in the bucket, hooked up to a fuse.

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OK.

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This is thermite penetration test in three, two, one.

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If all goes well, you'll see a cascade of fire burning

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through a bunch of steel plates.

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And the thermal imaging camera should enhance the experience.

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I've always wanted to see this thing in action just like this.

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As far as I know, it's never been done before.

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I mean, you see what happens after the fact

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that we're going to see the whole thing all at once.

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So this little pre-myth appetizer could go anywhere.

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There we go.

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One, two, three.

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Nice.

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Oh.

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Four plates.

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Right, right.

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The top one in three down.

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That was pretty cool.

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It was.

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Cool isn't the word.

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At 4,000 degrees Fahrenheit, the burn

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is too bright to view at close quarters.

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It's a major meltdown.

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Look, he hangs up in the gallery.

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He'll make it like a million dollars.

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So Jamie's special thermite blend is hot to drop.

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To see if 11 pounds of it is enough to actually explode

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10 blocks of solid water.

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Well, look, let's clean this up, get some ice blocks out here,

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and replicate that video.

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That's what we're here for.

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Ah!

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All right, so this myth comes from a viewer.

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It's called woofer weaponry.

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Try saying that three times fast.

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OK, besides being a tongue twister,

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what are we talking about here?

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This is that a subwoofer can actually set off a weapon.

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But not just any weapon, a very specific type of combat

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rifle called an SKS.

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Cool.

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Tell me more.

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The story is that these Russian gangsters

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are driving around with these weapons

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in the back of their car.

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Let's face it, they're gangsters.

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That's what you do.

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And their car has this crazy boom and stereo system.

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They pull up next to these girls,

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and they try to impress them so they crank up the volume.

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The stereo system's so loud, the guns begin to vibrate,

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and suddenly, bang, bang, bang, all the guns go off.

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Gunfire not being the best pickup line,

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I'm assuming it scared off the girls.

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Talk about embarrassing.

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Yeah.

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Awkward.

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This viewer myth is simple and terrifying.

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If and when the base gets the car bouncing,

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the vibration is supposed to set off the SKS rifles.

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And they could potentially keep firing bullets

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till the clips run out.

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Well, I guess we need to get a car,

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install a super loud stereo system, crank it all the way up,

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throw some of these rifles in the back, and stand back.

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Well, if that doesn't work, there are these cars

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that are used for these sound offs.

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I mean, they're not really practical.

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A gangster might not have one of these.

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They're basically giant speakers on wheels.

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OK, but first up, I think we need to talk to an expert.

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I mean, we need to find out more about this SKS rifle.

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I mean, the myth is so specific.

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It's really strange.

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Definitely.

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So it's get acquainted time with the rifles renowned

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for their fickle firing habits.

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Any of you ever shot an SKS before?

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Nope.

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But I'm looking forward to it.

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Gunsmith Ben Murray knows exactly why these weapons

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occasionally shoot themselves.

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So what is it about the SKS rifle in particular that

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makes it so key to the Smith?

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It has a free-floating firing pin as opposed

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to a spring-loaded firing pin.

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I can show you that.

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Just assemble it right quick.

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This is the bolt assembly that houses the firing pin.

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And as you can see, it moves forward and backwards.

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So that just slides around in there.

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That's correct.

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So if there is no spring in that pin,

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does vibrate enough, I mean, could it potentially

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set a round off?

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I suppose it could.

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So there might be some truth to this myth.

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There may be.

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In most semi-automatic rifles, the spring simply

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holds the firing pin at the rear of the housing

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until the hammer strikes it, driving the pin

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onto the primer and firing the bullet.

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But the SKS with no spring has a firing pin that floats free

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and could bounce around, potentially causing

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an accidental discharge.

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There's plenty of verified incidents

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to support the claim.

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But we want to know if something as simple as sound waves

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could really dislodge those springless pins.

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So that kind of looks like a problem.

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Yes, there's quite a few in our country

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that have this free-floating style firing pin.

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In fact, that's why we came up with a spring-loaded firing

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pin to replace it.

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So Ben's fixed the problem.

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But to properly test the myth, we're

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using guns without the springs.

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Now, before we start testing to see whether or not

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subwoofers will set one of these off without using the trigger,

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we need to make sure ours work.

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So that's all we're doing today.

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We're just shooting guns.

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This day can't suck.

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Tori and Grant figure five guns should

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make a mythical car full.

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So on with the testing.

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And when the bullets run out, they

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can justify their jubilation.

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Now, remember when I said we're not shooting these guns just

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for our own enjoyment, but it's actual scientific research?

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Well, it turns out it's true.

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I mean, we have several of these guns.

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But the gun I was using jammed twice during the test.

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Ready for the next?

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I've had a jam.

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So that means we can't use that gun for when we do the experiment

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with the subwoofer.

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Because if it does jam during our subwoofer test,

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it makes it an invalid test.

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See, we're not just out here shooting guns for the fun of it.

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This is serious scientific experimentation.

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With six guns tested and five selected,

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it's time to fit a car we call the Great White

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with a thumping sound system.

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So what's my stereo?

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You think we can get in this thing?

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I don't know, but we want this thing to vibrate a lot.

226
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Well, we've got no shortage of space.

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You know, you could probably fit like four bodies

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in the back of this trunk.

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Yeah.

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Naturally, they've sourced the best

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and the basiest system in town.

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A little embarrassed about this car.

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I think they're going to laugh at us.

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I'm laughing at us.

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Oh, that is sick.

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Hey, kitty, Paul, how are you guys?

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Hey, welcome to Auto Sound.

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Well, the myth that we're working on

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involves a guy with a really big car stereo.

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He has a special type of gun in the backseat called an SKS.

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The car stereo was so loud that when we turned it up,

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it set the gun off.

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You think it could happen?

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Well, I've seen everything from nose,

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please, or crack windshield, so it's possible.

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Not quite your standard sales pitch,

247
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but those cracked windshield sound promising.

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Ooh.

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What is that?

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This is a 12-inch square driver from MTX.

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It's the 8,500 series.

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It's going to handle about 750 watts of RMS.

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And it's square because it has more surface area,

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which means it's naturally going to have more output.

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More speaker, more output.

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And I think it's going to do what you guys need it

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to do for your application.

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Well, you got to see our car first,

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and then you can make that call.

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OK.

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One thing's for certain, a stereo like this

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way outclasses the car they drove up in.

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This is perfect.

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Ha, ha, ha.

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Ha, ha, ha.

266
00:10:37,520 --> 00:10:38,520
Ha, ha, ha.

267
00:10:38,520 --> 00:10:39,520
Good.

268
00:10:39,520 --> 00:10:40,520
Still to come.

269
00:10:40,520 --> 00:10:41,520
The heavy beat hits the backseat.

270
00:10:41,520 --> 00:10:42,520
There you go.

271
00:10:42,520 --> 00:10:43,520
Ha, ha, ha.

272
00:10:43,520 --> 00:10:44,520
That's the car.

273
00:10:44,520 --> 00:10:51,520
But next, we see what can go wrong with thermite.

274
00:10:51,520 --> 00:11:02,120
Not for the first time, the Mythbusters are playing with

275
00:11:02,120 --> 00:11:03,120
bikes.

276
00:11:03,120 --> 00:11:04,120
There we go.

277
00:11:04,120 --> 00:11:05,120
One, two, three.

278
00:11:05,120 --> 00:11:09,040
They're set to test a dubious and dangerous internet video

279
00:11:09,040 --> 00:11:12,160
that seems to show exploding eyes.

280
00:11:12,160 --> 00:11:15,000
The clip shows what is purportedly 11 pounds of thermite

281
00:11:15,000 --> 00:11:18,880
in a metal bucket sitting on top of 10 blocks of ice.

282
00:11:18,880 --> 00:11:21,880
They light the thermite, it does what we expect thermite to do,

283
00:11:21,880 --> 00:11:25,320
but then all of a sudden, poof, out it goes in a big explosion,

284
00:11:25,320 --> 00:11:26,880
flinging bits of metal everywhere.

285
00:11:26,880 --> 00:11:30,440
Now, we're going to do exactly what they did and see if we get

286
00:11:30,440 --> 00:11:31,440
the same result.

287
00:11:31,440 --> 00:11:35,520
It's hard to believe that mixing fire and ice could ever end in a

288
00:11:35,520 --> 00:11:36,520
boom.

289
00:11:36,520 --> 00:11:41,160
Retired FBI man Frank Doyle thinks that concealed gunpowder might

290
00:11:41,160 --> 00:11:42,960
be the cause of the conflagration.

291
00:11:42,960 --> 00:11:47,480
Well, I'm a little skeptical, and I think they've done something

292
00:11:47,480 --> 00:11:48,480
a little iffy.

293
00:11:48,480 --> 00:11:52,280
All right, well, there's only one way to find out.

294
00:11:52,280 --> 00:11:55,240
Frank sets the fuse, Adam sets the scene.

295
00:11:55,240 --> 00:11:58,000
Let's get behind the barrier and replicate a couple of internet

296
00:11:58,000 --> 00:11:59,800
pyromaniacs.

297
00:11:59,800 --> 00:12:01,680
And Jamie lights the wick.

298
00:12:01,680 --> 00:12:08,160
This is thermite and ice in three, two, one.

299
00:12:08,160 --> 00:12:10,160
Good.

300
00:12:10,160 --> 00:12:14,440
Needless to say, never try this yourself.

301
00:12:14,440 --> 00:12:18,400
We've got all the safety gear, the expertise, and the blast

302
00:12:18,400 --> 00:12:19,400
screen.

303
00:12:19,400 --> 00:12:21,400
It's killing me.

304
00:12:21,400 --> 00:12:23,760
Don't tell me.

305
00:12:23,760 --> 00:12:25,280
What the heck?

306
00:12:25,280 --> 00:12:28,880
This is close to a worst case scenario when the explosion you're

307
00:12:28,880 --> 00:12:30,880
expecting to happen doesn't.

308
00:12:30,880 --> 00:12:32,480
I think it's a dud.

309
00:12:32,480 --> 00:12:36,000
So Jamie slips into something less comfortable, but way more

310
00:12:36,000 --> 00:12:37,000
fireproof.

311
00:12:37,000 --> 00:12:39,600
He and Frank fashion a new fuse.

312
00:12:39,600 --> 00:12:43,640
Then Jamie takes a furtive walk, knowing the old fuse could catch

313
00:12:43,640 --> 00:12:45,760
at any time.

314
00:12:45,760 --> 00:12:49,560
So Jamie's put on the full fire suit to protect himself to replace

315
00:12:49,560 --> 00:12:52,800
another fuse and matches because, well, we don't know.

316
00:12:52,800 --> 00:12:55,440
He could touch that bucket and it could all go off.

317
00:12:55,440 --> 00:12:57,760
So it's a little bit touch and go right now.

318
00:12:57,760 --> 00:13:00,920
Jamie wastes no time setting the new spark.

319
00:13:00,920 --> 00:13:03,400
He's lit it.

320
00:13:03,400 --> 00:13:05,000
Let's hope it stays lit.

321
00:13:05,000 --> 00:13:09,840
This experiment should confirm or bust the myth of exploding ice.

322
00:13:09,840 --> 00:13:13,480
That looks like the match is going off.

323
00:13:13,480 --> 00:13:15,480
There it goes.

324
00:13:22,480 --> 00:13:24,080
I'd say that was an explosion.

325
00:13:24,080 --> 00:13:26,480
I'm pretty sure that qualified.

326
00:13:30,080 --> 00:13:33,720
And Adams found the source of that thunk that shook the blast

327
00:13:33,720 --> 00:13:34,720
screen.

328
00:13:35,720 --> 00:13:40,720
And the popular parlance, we call this piece of ice a hunter

329
00:13:40,720 --> 00:13:44,720
killer because it went all the way from ground zero to our

330
00:13:44,720 --> 00:13:45,720
blast chamber.

331
00:13:45,720 --> 00:13:49,720
Luckily, it is ice proof.

332
00:13:49,720 --> 00:13:53,720
Some chunks of ice flew as far as 150 feet.

333
00:13:53,720 --> 00:13:56,720
The brick pallet is a smoldering ruin.

334
00:13:56,720 --> 00:13:59,720
And there's no trace at all of the galvanized steel bucket.

335
00:13:59,720 --> 00:14:01,720
Look at that.

336
00:14:01,720 --> 00:14:03,720
That tells the whole story right there.

337
00:14:03,720 --> 00:14:05,720
I am a believer.

338
00:14:05,720 --> 00:14:08,720
But what actually made the ice go boom?

339
00:14:08,720 --> 00:14:11,720
The truth is no one really knows.

340
00:14:11,720 --> 00:14:14,720
Experts I've talked to are speculating that heat from the

341
00:14:14,720 --> 00:14:18,720
burning thermite is decomposing the water into hydrogen and

342
00:14:18,720 --> 00:14:21,720
oxygen, which in the presence of a source of ignition, namely

343
00:14:21,720 --> 00:14:23,720
hot thermite, is exploding.

344
00:14:23,720 --> 00:14:27,720
Now, I sort of have a problem with that because that

345
00:14:27,720 --> 00:14:30,720
requires that a whole bunch of hydrogen and oxygen be

346
00:14:30,720 --> 00:14:32,720
instantaneously created.

347
00:14:32,720 --> 00:14:34,720
And I don't know that that's possible.

348
00:14:34,720 --> 00:14:38,720
There is another explanation I'm just speculating.

349
00:14:38,720 --> 00:14:42,720
And that is that something in this reaction is aerosolizing

350
00:14:42,720 --> 00:14:43,720
all the thermite.

351
00:14:43,720 --> 00:14:45,720
It's steam or something.

352
00:14:45,720 --> 00:14:48,720
It's throwing all this powder up into a cloud of thermite.

353
00:14:48,720 --> 00:14:50,720
And that's exploding.

354
00:14:50,720 --> 00:14:51,720
We don't know.

355
00:14:51,720 --> 00:14:52,720
It's a mystery.

356
00:14:52,720 --> 00:14:55,720
But one way or another, it's a mystery.

357
00:14:55,720 --> 00:14:59,720
But one way or another, that was a hack of a bang.

358
00:14:59,720 --> 00:15:01,720
Here's their video.

359
00:15:01,720 --> 00:15:04,720
And here's ours.

360
00:15:04,720 --> 00:15:06,720
So it's myth confirmed.

361
00:15:06,720 --> 00:15:15,720
No black powder, no hidden fireworks, just fire and ice.

362
00:15:15,720 --> 00:15:19,720
After the break, the Russian guns get a subwoofer workout.

363
00:15:19,720 --> 00:15:21,720
Crank it up, Grant.

364
00:15:26,720 --> 00:15:30,720
Carri-Torian Grant are testing the myth of the Russian

365
00:15:30,720 --> 00:15:34,720
gangsters who turn the music up so loud it triggered a bunch

366
00:15:34,720 --> 00:15:38,720
of loaded SKS rifles they had stashed in the car.

367
00:15:40,720 --> 00:15:43,720
They've got the guns, the car, and a sound system that could

368
00:15:43,720 --> 00:15:45,720
shake loose your fillings.

369
00:15:45,720 --> 00:15:46,720
All right, you ready?

370
00:15:46,720 --> 00:15:47,720
Yes.

371
00:15:47,720 --> 00:15:48,720
Thank you.

372
00:15:48,720 --> 00:15:49,720
Oh!

373
00:15:49,720 --> 00:15:51,720
Oh, yeah!

374
00:15:51,720 --> 00:15:53,720
So unassuming and then bang!

375
00:15:53,720 --> 00:15:55,720
You filled up the whole trunk.

376
00:15:55,720 --> 00:15:57,720
That's base, baby.

377
00:15:57,720 --> 00:15:59,720
Oh, my eardrum.

378
00:15:59,720 --> 00:16:01,720
Look at the rust coming off the top of the roof.

379
00:16:04,720 --> 00:16:07,720
We're going to tear this car apart.

380
00:16:07,720 --> 00:16:11,720
But first, they want to sniff it up with a high speed pimp

381
00:16:11,720 --> 00:16:13,720
dad paint job.

382
00:16:13,720 --> 00:16:16,720
Well, he's hot rod enthusiast going, that's not how you paint

383
00:16:16,720 --> 00:16:17,720
flames on cars.

384
00:16:17,720 --> 00:16:19,720
What are you doing?

385
00:16:19,720 --> 00:16:22,720
You know what I got to say to that?

386
00:16:22,720 --> 00:16:24,720
So what?

387
00:16:24,720 --> 00:16:27,720
Just like a tattoo, it's more about the bad boy attitude

388
00:16:27,720 --> 00:16:29,720
than the art.

389
00:16:29,720 --> 00:16:31,720
Until you get inside.

390
00:16:31,720 --> 00:16:35,720
You know, some people have a hula girl or a chihuahua

391
00:16:35,720 --> 00:16:38,720
bobble head on their dashboard.

392
00:16:38,720 --> 00:16:39,720
We have us.

393
00:16:39,720 --> 00:16:43,720
Yeah, not quite the gangster image, but they should be good

394
00:16:43,720 --> 00:16:47,720
indicators of the turbulence caused by that thumping bass.

395
00:16:47,720 --> 00:16:53,720
Pimp, prep, and pumped with a trunk full of high grade

396
00:16:53,720 --> 00:16:57,720
hardware, the shark rolls up for its first ever rifle

397
00:16:57,720 --> 00:16:58,720
recital.

398
00:16:58,720 --> 00:17:01,720
If all goes to plan, there won't be an encore.

399
00:17:01,720 --> 00:17:04,720
Tori and Grant were kind enough to test all of the SKS

400
00:17:04,720 --> 00:17:07,720
rifles for us and make sure that they all work properly.

401
00:17:11,720 --> 00:17:14,720
Now, we're at the Alameda County Sheriff's Balm Range.

402
00:17:14,720 --> 00:17:17,720
We love this place because it's a wide open space where we

403
00:17:17,720 --> 00:17:19,720
don't have neighbors to complain about the noise and we can

404
00:17:19,720 --> 00:17:21,720
shoot all the guns we want.

405
00:17:21,720 --> 00:17:23,720
All right, so we've amassed our gangster arsenal.

406
00:17:23,720 --> 00:17:25,720
And we have our blanks, but as we know, we need to treat this

407
00:17:25,720 --> 00:17:27,720
like live ammunition.

408
00:17:27,720 --> 00:17:29,720
All right, let's load up our guns and get them in that vehicle.

409
00:17:29,720 --> 00:17:31,720
Sounds good to me.

410
00:17:31,720 --> 00:17:35,720
So the rifles get spread from the backseat to the front, some

411
00:17:35,720 --> 00:17:38,720
close up to the speakers, and others at a distance.

412
00:17:38,720 --> 00:17:41,720
This is going to serve as mission control for our experiment.

413
00:17:41,720 --> 00:17:44,720
We have a portable music player with all our test tones preloaded.

414
00:17:44,720 --> 00:17:47,720
We've also got a frequency generator and a oscilloscope so we

415
00:17:47,720 --> 00:17:50,720
can dial in any specific frequencies you want to test.

416
00:17:50,720 --> 00:17:53,720
Inside the car, there's a microphone that's connected to the

417
00:17:53,720 --> 00:17:55,720
spectrum analyzer and DBS PL meter.

418
00:17:55,720 --> 00:17:59,720
And that'll tell us not only the frequency, but also how loud it is.

419
00:17:59,720 --> 00:18:02,720
And finally, and perhaps most importantly, there's a live video

420
00:18:02,720 --> 00:18:05,720
feed to tell us if any of the guns have gone off as a result of

421
00:18:05,720 --> 00:18:07,720
our sound.

422
00:18:07,720 --> 00:18:10,720
The sound won't be music as we know it, but it's a live video

423
00:18:10,720 --> 00:18:14,720
feed as we know it, but a series of tones designed to test and

424
00:18:14,720 --> 00:18:18,720
push the acoustic limits of the system and maybe fire those guns.

425
00:18:18,720 --> 00:18:22,720
All right, this is going to be a low frequency sweep starting at

426
00:18:22,720 --> 00:18:25,720
20 hertz at 95 dB SPL.

427
00:18:25,720 --> 00:18:27,720
Ready?

428
00:18:27,720 --> 00:18:28,720
Oh yeah.

429
00:18:28,720 --> 00:18:30,720
Here we go.

430
00:18:30,720 --> 00:18:34,720
To keep it simple, Hertz indicates the pitch of a note and

431
00:18:34,720 --> 00:18:36,720
decibels measure the volume.

432
00:18:36,720 --> 00:18:41,720
95 decibels is roughly as loud as a motorcycle revving its engine.

433
00:18:41,720 --> 00:18:46,720
So far, not one round has fired off.

434
00:18:46,720 --> 00:18:48,720
We're not all the way through the sweep yet.

435
00:18:51,720 --> 00:18:53,720
But the signs aren't good.

436
00:18:53,720 --> 00:18:57,720
The bobbleheads are barely bubbling, so we'll change tack.

437
00:18:57,720 --> 00:19:00,720
All right, next I got to tone the alternates.

438
00:19:00,720 --> 00:19:02,720
Wee, wee, wee.

439
00:19:02,720 --> 00:19:05,720
Yeah, we want to see that pin fire off one of these bullets.

440
00:19:05,720 --> 00:19:07,720
All right, you guys ready?

441
00:19:07,720 --> 00:19:08,720
Yeah.

442
00:19:08,720 --> 00:19:10,720
Crank it up, Grant.

443
00:19:10,720 --> 00:19:15,720
If this works, they can expect to hear multiple gunshots at any moment.

444
00:19:15,720 --> 00:19:16,720
Is that it?

445
00:19:16,720 --> 00:19:17,720
That's it.

446
00:19:17,720 --> 00:19:19,720
You see anything?

447
00:19:19,720 --> 00:19:21,720
Okay.

448
00:19:21,720 --> 00:19:23,720
Come on, let's make that car vibrate.

449
00:19:23,720 --> 00:19:25,720
Not one round has gone off yet.

450
00:19:25,720 --> 00:19:26,720
All right, one wiggle.

451
00:19:26,720 --> 00:19:28,720
I mean, the gun's not even shaking.

452
00:19:28,720 --> 00:19:30,720
Okay, so that didn't work.

453
00:19:30,720 --> 00:19:31,720
What would be the next step?

454
00:19:31,720 --> 00:19:32,720
Louder.

455
00:19:32,720 --> 00:19:33,720
I like that.

456
00:19:33,720 --> 00:19:34,720
Let's go louder.

457
00:19:34,720 --> 00:19:36,720
It's time to raise the stakes.

458
00:19:36,720 --> 00:19:41,720
Grant cranks the decibels up to an ear-shattering 130.

459
00:19:41,720 --> 00:19:43,720
That's close to the level of a jet engine

460
00:19:43,720 --> 00:19:46,720
as heard from just 100 feet away.

461
00:19:46,720 --> 00:19:48,720
There you go.

462
00:19:48,720 --> 00:19:49,720
Whoa!

463
00:19:49,720 --> 00:19:51,720
Look at those speakers.

464
00:19:51,720 --> 00:19:54,720
Yeah, look, the gun is actually vibrating.

465
00:19:54,720 --> 00:19:57,720
Well, no, no, it's the camera that's vibrating.

466
00:19:57,720 --> 00:20:00,720
There's dust and everything getting knocked all around.

467
00:20:00,720 --> 00:20:02,720
It's great.

468
00:20:02,720 --> 00:20:03,720
Whoa!

469
00:20:03,720 --> 00:20:05,720
Oh, god, the camera cut out.

470
00:20:05,720 --> 00:20:06,720
We lost it.

471
00:20:06,720 --> 00:20:07,720
Oh, no.

472
00:20:07,720 --> 00:20:12,720
Seems like everything's busted, but the gun's.

473
00:20:12,720 --> 00:20:15,720
Still, Grant sees a little room to maneuver.

474
00:20:15,720 --> 00:20:18,720
For all these tests, the guns have been horizontal

475
00:20:18,720 --> 00:20:20,720
on the various parts of the car.

476
00:20:20,720 --> 00:20:22,720
Now what we're going to do is change their orientation.

477
00:20:22,720 --> 00:20:25,720
So instead of being horizontal, they'll be vertical.

478
00:20:25,720 --> 00:20:28,720
And that way, we hope that the pins will be in a better position

479
00:20:28,720 --> 00:20:31,720
to set off these blanks and hopefully get a result.

480
00:20:31,720 --> 00:20:36,720
Grant's enlisting the force of gravity to help dislodge those pins.

481
00:20:36,720 --> 00:20:40,720
It might not help, but it sure won't hurt.

482
00:20:40,720 --> 00:20:42,720
You know, if this doesn't do it, I don't know what will.

483
00:20:42,720 --> 00:20:44,720
Well, it's definitely working.

484
00:20:44,720 --> 00:20:46,720
You can see that speaker just vibrating.

485
00:20:46,720 --> 00:20:47,720
Wow, look at that gun.

486
00:20:47,720 --> 00:20:49,720
The gun looks like the gun's shaking.

487
00:20:49,720 --> 00:20:51,720
Yeah, I think it did.

488
00:20:51,720 --> 00:20:52,720
Yeah, heck yeah.

489
00:20:52,720 --> 00:20:54,720
Come on, come on.

490
00:20:54,720 --> 00:20:55,720
Fire up!

491
00:20:55,720 --> 00:20:56,720
Shoot that gun.

492
00:20:56,720 --> 00:20:58,720
There's a lot happening in there.

493
00:20:58,720 --> 00:20:59,720
Gosh.

494
00:20:59,720 --> 00:21:01,720
It's still not firing.

495
00:21:01,720 --> 00:21:05,720
But once again, none of the SKS shooters go bad.

496
00:21:05,720 --> 00:21:08,720
Mind you, there was some collateral damage.

497
00:21:08,720 --> 00:21:10,720
And this stereo system was crazy.

498
00:21:10,720 --> 00:21:13,720
I mean, it was vibrating the entire car so much

499
00:21:13,720 --> 00:21:16,720
that it actually busted the gas line, and it's now leaking fuel.

500
00:21:16,720 --> 00:21:19,720
So this car is done, but that doesn't mean the myth is done.

501
00:21:19,720 --> 00:21:22,720
It just means we got to find out if this is even possible.

502
00:21:22,720 --> 00:21:28,720
Coming up, Tori Grant and Carrie see if the SKS rifles resonate to a perfect pitch.

503
00:21:28,720 --> 00:21:29,720
Do it now.

504
00:21:29,720 --> 00:21:30,720
That is menacing.

505
00:21:30,720 --> 00:21:35,720
While Jamie and Adam get a feel for the gun that could blow your thumb off.

506
00:21:35,720 --> 00:21:37,720
That gun has a heck of a kick.

507
00:21:40,720 --> 00:21:43,720
Don't try anything you see on the show at home.

508
00:21:43,720 --> 00:21:45,720
Wear what you call experts.

509
00:21:49,720 --> 00:21:54,720
Now to investigate one more way you can hurt yourself with a handgun.

510
00:21:55,720 --> 00:21:57,720
What you got there?

511
00:21:57,720 --> 00:21:58,720
This.

512
00:21:58,720 --> 00:22:04,720
This is a pretty grisly depiction of the dangers of mishandling a firearm.

513
00:22:04,720 --> 00:22:06,720
You mean like when you shoot yourself?

514
00:22:06,720 --> 00:22:07,720
No.

515
00:22:07,720 --> 00:22:08,720
Merely by having a poor grip.

516
00:22:08,720 --> 00:22:09,720
Check this out.

517
00:22:11,720 --> 00:22:12,720
That's nasty.

518
00:22:13,720 --> 00:22:16,720
The severed thumb is so nasty we can't show it on TV.

519
00:22:16,720 --> 00:22:21,720
It's a graphic myth, so here's the tale in graphic form.

520
00:22:21,720 --> 00:22:26,720
This beast of a side-iron is a hunting pistol designed to bring down big game.

521
00:22:26,720 --> 00:22:31,720
And some of the gas that propels the bullet also escapes between the back of the barrel

522
00:22:31,720 --> 00:22:33,720
and the front of the cylinder.

523
00:22:33,720 --> 00:22:35,720
And therein lies the myth.

524
00:22:35,720 --> 00:22:38,720
If you have a digit in the wrong place at the right time,

525
00:22:38,720 --> 00:22:42,720
the force of the blast could blow your thumb clean off.

526
00:22:42,720 --> 00:22:47,720
I have a hard time believing that this could happen just from misfingering a gun.

527
00:22:47,720 --> 00:22:50,720
Well that is what we have to figure out.

528
00:22:50,720 --> 00:22:51,720
Okay.

529
00:22:52,720 --> 00:22:58,720
Out on the range, Gunsmith Frank Tabor has brought along the cannon in question.

530
00:22:58,720 --> 00:23:03,720
So Frank, according to the myth, the guy lost his thumb because he held it like this.

531
00:23:03,720 --> 00:23:05,720
Do you see any immediate problems with that?

532
00:23:05,720 --> 00:23:07,720
Oh yeah, you have that gap between the cylinder and barrel.

533
00:23:07,720 --> 00:23:09,720
And you got a 2,300 foot per second cartridge.

534
00:23:09,720 --> 00:23:12,720
There's a lot of gases and it comes out just like a cutting torch.

535
00:23:12,720 --> 00:23:14,720
So you think that could be some real damage?

536
00:23:14,720 --> 00:23:15,720
Okay.

537
00:23:15,720 --> 00:23:16,720
Yes.

538
00:23:16,720 --> 00:23:21,720
Adam sets Jamie a tasty target to test out the weapon on high speed video.

539
00:23:21,720 --> 00:23:22,720
Round.

540
00:23:22,720 --> 00:23:27,720
Frank slips one in the chamber and dirty Jamie lines up a clean shot.

541
00:23:33,720 --> 00:23:34,720
Ha ha ha ha.

542
00:23:34,720 --> 00:23:36,720
That was something.

543
00:23:36,720 --> 00:23:38,720
Well that'd make a scary watermelon problem.

544
00:23:39,720 --> 00:23:44,720
It's another notch on Jamie's belter of dead fruit and vegetables.

545
00:23:44,720 --> 00:23:47,720
But he did get a feel for the firearm.

546
00:23:47,720 --> 00:23:49,720
That gun has a heck of a kick.

547
00:23:49,720 --> 00:23:53,720
Now I have to be honest, I was a little afraid of it at first,

548
00:23:53,720 --> 00:23:56,720
thinking that it was gonna like hit me in the head afterwards.

549
00:23:56,720 --> 00:24:01,720
So I can kind of see how somebody might want to grab it in an unusual way

550
00:24:01,720 --> 00:24:03,720
to make sure they had a hold of it.

551
00:24:03,720 --> 00:24:09,720
Now it's Adam's turn to take a shot, feel the force, and maybe make a prediction.

552
00:24:09,720 --> 00:24:12,720
It's not that I'm lactose intolerant, but if milk gets in my way,

553
00:24:12,720 --> 00:24:14,720
I'm gonna take care of the problem.

554
00:24:21,720 --> 00:24:25,720
That's one expiration date that was way off the mark.

555
00:24:25,720 --> 00:24:28,720
The high speed camera remains one of my favorite tools on the show.

556
00:24:28,720 --> 00:24:31,720
If you look really closely at the close up of the gunfire,

557
00:24:31,720 --> 00:24:36,720
you can clearly see gases shooting out of the space between the cylinder and the barrel.

558
00:24:36,720 --> 00:24:40,720
This is where we'll be looking for damaging amounts of energy.

559
00:24:40,720 --> 00:24:43,720
If the story behind the gruesome photo is true,

560
00:24:43,720 --> 00:24:48,720
the man's left thumb went south due to a clumsy grip across the cylinder.

561
00:24:48,720 --> 00:24:53,720
But after handling the hardware, Adam's best bet is a thumbs down.

562
00:24:53,720 --> 00:24:58,720
While it's an impressive amount of gas you can see coming out of the gun on the high speed,

563
00:24:58,720 --> 00:25:01,720
I still don't feel like it's gonna sever a finger.

564
00:25:01,720 --> 00:25:05,720
Well, they've got the gun, the bullets, and the venue.

565
00:25:05,720 --> 00:25:09,720
All they need now is a disposable digit.

566
00:25:10,720 --> 00:25:13,720
The gun is ready to fire.

567
00:25:17,720 --> 00:25:23,720
All efforts to fire five rifles via the vibrations from an upscale car stereo

568
00:25:23,720 --> 00:25:26,720
have failed to end in a single gunshot.

569
00:25:26,720 --> 00:25:29,720
You know, if this doesn't do it, I don't know what will.

570
00:25:29,720 --> 00:25:34,720
So the next to last resort is a visit to Meyer Sound.

571
00:25:34,720 --> 00:25:41,720
These audio experts already help us prove that Sound alone can't make you lose your bowel control.

572
00:25:43,720 --> 00:25:47,720
And that the human voice can break glass.

573
00:25:50,720 --> 00:25:55,720
But today we've brought our rifles to them to see if they can help us figure out a sweet spot,

574
00:25:55,720 --> 00:26:00,720
a special frequency that will cause the SKS rifle to discharge.

575
00:26:00,720 --> 00:26:05,720
Here to help is Roger Schwenke, and once he knows what the myth entails...

576
00:26:05,720 --> 00:26:12,720
Well, if it's the firing pin that's unique about this gun, then let's isolate that and see what happens to it.

577
00:26:12,720 --> 00:26:14,720
Okay, great.

578
00:26:14,720 --> 00:26:19,720
So Tori strips out the pin and Roger opens the test chamber.

579
00:26:19,720 --> 00:26:26,720
So resonant frequency is the frequency at which an object will begin to vibrate in excess of the energy that you put into it.

580
00:26:26,720 --> 00:26:30,720
For example, with our trying to break a wine glass with your voice experiment.

581
00:26:30,720 --> 00:26:38,720
And many different frequencies of wine glass vibrate, but at one specific frequency it begins to vibrate a lot and eventually shatters.

582
00:26:38,720 --> 00:26:45,720
That is what we're looking for in our firing pin, and if we find that, then there's a chance that this gun just might go off.

583
00:26:45,720 --> 00:26:47,720
Do it. Do it now.

584
00:26:47,720 --> 00:26:50,720
So Roger fills the chamber with pink noise.

585
00:26:50,720 --> 00:26:55,720
That's a whole range of different frequencies blasted out together.

586
00:26:55,720 --> 00:26:57,720
It's like an earthquake.

587
00:26:57,720 --> 00:27:01,720
And the volumes cranked way up to 150 decibels.

588
00:27:01,720 --> 00:27:05,720
It's the speaker moving, and it looks like it's vibrated, but the pin doesn't look like it's separate.

589
00:27:05,720 --> 00:27:09,720
Yeah, it looks like the whole mechanism's moving, but the pin is not going up and down.

590
00:27:09,720 --> 00:27:12,720
Yeah, still a little hard to tell.

591
00:27:12,720 --> 00:27:14,720
What is accelerometer reading?

592
00:27:14,720 --> 00:27:17,720
It's responding about the same at all frequencies.

593
00:27:17,720 --> 00:27:19,720
What does that mean for us?

594
00:27:19,720 --> 00:27:24,720
Well, it's not resonating it, it's moving, but it's not resonating at any one particular frequency.

595
00:27:24,720 --> 00:27:27,720
The pin hasn't moved inside the housing.

596
00:27:27,720 --> 00:27:31,720
That's good news for the Russian mob and a kick in the pants for the myth.

597
00:27:31,720 --> 00:27:35,720
But maybe testing the pin alone wasn't the best plan.

598
00:27:35,720 --> 00:27:40,720
So I put the gun back together. We've loaded it with the blank.

599
00:27:40,720 --> 00:27:43,720
I have the gun pointing nose down with the safety off.

600
00:27:43,720 --> 00:27:47,720
That way it gives us the best possible chance for this gun to go off accidentally.

601
00:27:47,720 --> 00:27:49,720
Okay, hit it, Roger.

602
00:27:49,720 --> 00:27:51,720
Bring on the noise.

603
00:27:51,720 --> 00:27:53,720
That is menacing.

604
00:27:53,720 --> 00:27:59,720
And this is with the safety off, so it's giving it the best possible chance, but still it's not firing.

605
00:27:59,720 --> 00:28:04,720
Yeah, if this happens at all, it should happen fairly quickly, and it's not happening.

606
00:28:04,720 --> 00:28:10,720
So Roger pulls the plug. The resonant frequency theory fails to fire.

607
00:28:10,720 --> 00:28:18,720
But if you think it's over, if you truly believe we'll end this myth with a shameful shutter, you so don't know this show.

608
00:28:19,720 --> 00:28:22,720
Next up, the boys turn chicken for a science.

609
00:28:22,720 --> 00:28:26,720
Oh, oh, oh.

610
00:28:35,720 --> 00:28:43,720
Adam and Jamie have decided to see for themselves if holding a huge handgun the wrong way could really blow your thumb off.

611
00:28:43,720 --> 00:28:49,720
This myth is all about escaping gases, some of which propel the bullet out of the barrel,

612
00:28:49,720 --> 00:28:54,720
but some that escape right here from this tiny little space between the cylinder and the barrel.

613
00:28:54,720 --> 00:28:57,720
It's those that could cut your finger off, man.

614
00:28:57,720 --> 00:28:59,720
Or so the story goes.

615
00:28:59,720 --> 00:29:07,720
Despite the high-speed gas shots and a shocking photo of a severed thumb, Adam thinks this myth is, well, a myth.

616
00:29:07,720 --> 00:29:11,720
But Jamie begs to differ.

617
00:29:11,720 --> 00:29:18,720
When I first heard about this story, I wasn't so sure that a revolver would be capable of blowing your thumb off through the side like that.

618
00:29:18,720 --> 00:29:23,720
But having a review of the high-speed footage, I kind of think it will.

619
00:29:23,720 --> 00:29:28,720
The gun is firmly secured in a clamp that's screwed down tight to the bench top.

620
00:29:28,720 --> 00:29:31,720
Now all they need is a stunt thumb.

621
00:29:31,720 --> 00:29:35,720
If you think these look gruesome, you don't know the half of it.

622
00:29:35,720 --> 00:29:39,720
But the best way to tell you how these are made is to show you how they were made.

623
00:29:39,720 --> 00:29:42,720
I remember it like it was yesterday.

624
00:29:42,720 --> 00:29:51,720
Faced with the task of replicating that miracle of evolution, the human hand, the mythbusters' first thoughts naturally turned to dead chickens.

625
00:29:51,720 --> 00:29:55,720
By the way, I touched this chicken before I touched anything else. You want to take the meat home?

626
00:29:55,720 --> 00:29:59,720
Adam stripped a whole cooked bird. Not for the meat, but for the bones.

627
00:29:59,720 --> 00:30:05,720
He traces a template over his left hand and even marks the three joints in each finger.

628
00:30:05,720 --> 00:30:09,720
I managed to get almost all the bones I need out of a single rotisserie chicken.

629
00:30:09,720 --> 00:30:15,720
Jamie's building his own version of a stunt hand, also made entirely from poultry pieces.

630
00:30:15,720 --> 00:30:25,720
And while Adam sutures a carefully crafted left thumb, Dr. Heidemstein shows he's lost all sense of proportion.

631
00:30:25,720 --> 00:30:29,720
It's actually the left hand, you know, that's the thumb and the four fingers.

632
00:30:29,720 --> 00:30:34,720
And I picked them so that they're the correct lengths and everything.

633
00:30:34,720 --> 00:30:37,720
Do we have a show of hands?

634
00:30:44,720 --> 00:30:50,720
As the dominant hand, Jamie's massive mitt of chicken meat gets to take the first shot.

635
00:30:50,720 --> 00:31:00,720
It's wired securely onto the gun butt with care taken to place the thumb in precisely the right, or rather the wrong, position.

636
00:31:00,720 --> 00:31:02,720
I love it. Alright, let's do it.

637
00:31:02,720 --> 00:31:08,720
It loads the gun and cocks it. With the trigger tied to a string, all Jamie has to do is pull it.

638
00:31:08,720 --> 00:31:11,720
The gun is hot. You're good to go.

639
00:31:11,720 --> 00:31:16,720
And gun horror in three, two, one.

640
00:31:19,720 --> 00:31:21,720
No decapitation.

641
00:31:21,720 --> 00:31:24,720
Definitely damage, but yeah, it's still there.

642
00:31:24,720 --> 00:31:28,720
I think that your drumstick bone is way too robust for a human hand.

643
00:31:28,720 --> 00:31:33,720
What I see on the chicken hand and what I see on the high speed is that the gases are coming out and they're definitely having an effect.

644
00:31:33,720 --> 00:31:37,720
I have no doubt you'd be burned by this, but I don't see any decapitation.

645
00:31:37,720 --> 00:31:44,720
Lucky Jamie's skin is thicker than the chicken's. He's even prepared to offer some sage advice.

646
00:31:44,720 --> 00:31:47,720
The major amount of gas is right out through the metal there.

647
00:31:47,720 --> 00:31:48,720
Okay.

648
00:31:48,720 --> 00:31:51,720
So if you want to be sure it cuts it off, that's where to put it.

649
00:31:51,720 --> 00:31:52,720
Alright. Here we go.

650
00:31:52,720 --> 00:31:57,720
Adams anatomically accurate avian appendage in three, two, one.

651
00:31:59,720 --> 00:32:02,720
To the naked eye, this looks like real damage.

652
00:32:02,720 --> 00:32:05,720
Now for the expert analysis.

653
00:32:11,720 --> 00:32:12,720
Okay.

654
00:32:12,720 --> 00:32:13,720
Wow.

655
00:32:14,720 --> 00:32:19,720
What Adam means to say is they've shredded one chicken finger and shattered another.

656
00:32:19,720 --> 00:32:21,720
This one is torn to shreds.

657
00:32:21,720 --> 00:32:23,720
What about that one?

658
00:32:23,720 --> 00:32:25,720
That is cut almost clean through.

659
00:32:25,720 --> 00:32:26,720
Wow.

660
00:32:27,720 --> 00:32:29,720
There's no doubt about it.

661
00:32:29,720 --> 00:32:34,720
Adams carefully constructed chicken hand at the right size bones to simulate human fingers.

662
00:32:34,720 --> 00:32:38,720
They even had three joints right where they're meant to be.

663
00:32:38,720 --> 00:32:40,720
That is totally clear.

664
00:32:40,720 --> 00:32:42,720
Those gases have cut through that finger.

665
00:32:42,720 --> 00:32:43,720
Absolutely.

666
00:32:43,720 --> 00:32:46,720
That is one of the more gruesome things we've ever filmed on high speed.

667
00:32:46,720 --> 00:32:49,720
Well, it doesn't get any more definitive than that.

668
00:32:49,720 --> 00:32:50,720
Nope.

669
00:32:50,720 --> 00:32:51,720
It's confirmed.

670
00:32:51,720 --> 00:32:53,720
Totally confirmed.

671
00:32:53,720 --> 00:32:55,720
Well, let that be a lesson to you.

672
00:32:55,720 --> 00:32:59,720
If you've got to have a handgun, make sure you know how to use it.

673
00:32:59,720 --> 00:33:02,720
I can't believe you can eat buffalo wings so quickly after that.

674
00:33:02,720 --> 00:33:03,720
What do you mean?

675
00:33:03,720 --> 00:33:05,720
I'm going to cook up Franken-hand for dinner.

676
00:33:05,720 --> 00:33:06,720
Ha ha ha.

677
00:33:12,720 --> 00:33:18,720
After failing to trigger these unstable Russian rifles with a red hot car stereo.

678
00:33:18,720 --> 00:33:20,720
Not one round has gone off yet.

679
00:33:20,720 --> 00:33:27,720
Carri-Torian Grant take one last shot at this myth with a truck that's tailor made to bump up the volume.

680
00:33:27,720 --> 00:33:33,720
Now I know this car didn't do what we needed, but I think I have some renewed confidence in our backup plan.

681
00:33:33,720 --> 00:33:38,720
Oh my God! That is loud out here. How's it inside?

682
00:33:38,720 --> 00:33:39,720
Dink-us.

683
00:33:39,720 --> 00:33:40,720
What?

684
00:33:41,720 --> 00:33:47,720
So far they've pushed the decibels way up to 150, but this car peaks at 160.

685
00:33:47,720 --> 00:33:51,720
That's actually louder than the gunshots they hope to hear.

686
00:33:51,720 --> 00:33:57,720
Now handling the mid-bass frequencies, we've got four 10-inch Thunder 8500 subwoofers in a custom fiberglass enclosure.

687
00:33:57,720 --> 00:34:03,720
But that's not all because the real meat are these two 22-inch jackhammer subwoofers.

688
00:34:03,720 --> 00:34:09,720
Each subwoofer has two amplifiers for a total of 17,200 watts.

689
00:34:09,720 --> 00:34:13,720
If you're talking about sound pressure level in a car, this is it.

690
00:34:14,720 --> 00:34:19,720
Once again, the guns are armed with blank cartridges and spread around the car.

691
00:34:19,720 --> 00:34:25,720
We're ready to go. The guns are loaded. The safeties are off to give us the best possible chance for this to work.

692
00:34:25,720 --> 00:34:27,720
But Carri seems a little gun-shy.

693
00:34:27,720 --> 00:34:35,720
I'm having some serious doubts that something even as powerful as the SPL car is going to do it, but I would really, really like to be proven wrong here.

694
00:34:35,720 --> 00:34:39,720
The sound system's been preloaded with three different test tracks.

695
00:34:39,720 --> 00:34:46,720
The first is up bass sweep, and remember, this is 30 decibels higher than anything they tried in the great white.

696
00:34:46,720 --> 00:34:48,720
Starting to sweep.

697
00:34:48,720 --> 00:34:52,720
Wow, that thing is shaking like nuts.

698
00:34:52,720 --> 00:35:00,720
But the one sound they're not hearing is gunfire. Time to try the alternating tomes.

699
00:35:00,720 --> 00:35:02,720
Whoa, yeah.

700
00:35:03,720 --> 00:35:05,720
Look at this dude in the camera.

701
00:35:05,720 --> 00:35:09,720
Things are really moving, guys.

702
00:35:09,720 --> 00:35:11,720
No discharge at.

703
00:35:11,720 --> 00:35:14,720
159.5?

704
00:35:14,720 --> 00:35:15,720
Yeah.

705
00:35:15,720 --> 00:35:19,720
And this is way crazier than a gangster vehicle would have.

706
00:35:19,720 --> 00:35:22,720
I mean, there's no way a person could be sitting in there and listening comfortably.

707
00:35:22,720 --> 00:35:24,720
Absolutely.

708
00:35:24,720 --> 00:35:27,720
The last track is loosely called Music.

709
00:35:27,720 --> 00:35:31,720
It's unlikely to top the charts, but it's seriously loud.

710
00:35:31,720 --> 00:35:33,720
Still no gunshots.

711
00:35:33,720 --> 00:35:37,720
You can't see the speakers moving like crazy, and all the dust in the car is blowing.

712
00:35:37,720 --> 00:35:39,720
Yeah.

713
00:35:39,720 --> 00:35:42,720
I hope that's dust. That's not smoke, is it?

714
00:35:42,720 --> 00:35:44,720
It looks like smoke.

715
00:35:44,720 --> 00:35:45,720
Do you think?

716
00:35:45,720 --> 00:35:47,720
No, we would have heard a gunshot.

717
00:35:47,720 --> 00:35:48,720
I think?

718
00:35:48,720 --> 00:35:49,720
I don't know.

719
00:35:49,720 --> 00:35:52,720
You know what? It's starting to smoke. Is that normal?

720
00:35:52,720 --> 00:35:54,720
No, it's not.

721
00:35:54,720 --> 00:35:59,720
This is the last and loudest of the tests, and everyone's hoping a gun's gone off.

722
00:35:59,720 --> 00:36:03,720
So we thought maybe, maybe there's a possibility we didn't hear the discharge,

723
00:36:03,720 --> 00:36:06,720
maybe a gun went off, and it's just filling the car with smoke.

724
00:36:06,720 --> 00:36:12,720
Oh, no. That smells like electrical smoke. That doesn't smell like gunfire.

725
00:36:12,720 --> 00:36:16,720
In fact, the smoke came from quickly heated resin in the woofers.

726
00:36:16,720 --> 00:36:19,720
It normally cures in the first few months,

727
00:36:19,720 --> 00:36:23,720
but we've pushed a brand new speaker way too hard.

728
00:36:23,720 --> 00:36:27,720
The system's fine, but the myth has run its course.

729
00:36:27,720 --> 00:36:30,720
All that remains is to check the weapons.

730
00:36:30,720 --> 00:36:32,720
Alright, this is the last gun.

731
00:36:32,720 --> 00:36:35,720
Didn't discharge.

732
00:36:35,720 --> 00:36:37,720
This is why we can never have anything nice.

733
00:36:37,720 --> 00:36:39,720
I'm calling this one busted.

734
00:36:39,720 --> 00:36:43,720
Yeah, I mean, we threw a massive amount of sound at it, and the gun still didn't go off.

735
00:36:43,720 --> 00:36:44,720
Busted.

736
00:36:44,720 --> 00:36:45,720
Yeah, busted.

737
00:36:45,720 --> 00:36:47,720
Dang, I wanted this one to work.

738
00:36:50,720 --> 00:36:52,720
You want more?

739
00:36:52,720 --> 00:36:54,720
We've got more.

740
00:36:54,720 --> 00:36:59,720
Log on to discovery.com slash mythbusters and jump in!

741
00:36:59,720 --> 00:37:04,720
And still to come, one team changes tactics to get a result.

742
00:37:04,720 --> 00:37:09,720
Special delivery for Mr. Buster, while the other team, that's playing show-off.

743
00:37:09,720 --> 00:37:11,720
Get it off!

744
00:37:18,720 --> 00:37:25,720
Adam and Jamie have already confirmed the internet myth of ice blocks exploding in flaming thermite.

745
00:37:27,720 --> 00:37:29,720
I'd say that was an explosion.

746
00:37:29,720 --> 00:37:31,720
I'm pretty sure that...

747
00:37:31,720 --> 00:37:33,720
Oh my god.

748
00:37:34,720 --> 00:37:36,720
But why leave it there?

749
00:37:36,720 --> 00:37:41,720
Regular viewers know we're always ready to supersize a myth.

750
00:37:43,720 --> 00:37:45,720
Ah, it's beautiful.

751
00:37:48,720 --> 00:37:53,720
They're using ten times the ice and ten times the thermite.

752
00:37:53,720 --> 00:37:57,720
This thing right here is a little bit more macho going on here.

753
00:37:57,720 --> 00:37:59,720
I'm not going to use a torch to ignite it.

754
00:37:59,720 --> 00:38:04,720
I'm going to use these things, which are fusing niters, and they work kind of like this.

755
00:38:04,720 --> 00:38:08,720
And then I'm going to leave quickly.

756
00:38:10,720 --> 00:38:15,720
Alright Jamie, we are all in place in the bunker. You made fire when ready, sir.

757
00:38:15,720 --> 00:38:20,720
Supersize thermite in three, two, one.

758
00:38:23,720 --> 00:38:25,720
Now here's the thing about thermite.

759
00:38:25,720 --> 00:38:32,720
Being volatile means it's also unpredictable, and this tub full of red powder is taking its own sweet time.

760
00:38:33,720 --> 00:38:36,720
Thermite's kind of... I hate thermite.

761
00:38:37,720 --> 00:38:39,720
But when it works...

762
00:38:42,720 --> 00:38:44,720
There's nothing like it.

763
00:38:46,720 --> 00:38:47,720
Wow!

764
00:38:49,720 --> 00:38:51,720
I'm glad we didn't approach that.

765
00:38:51,720 --> 00:38:52,720
Wow!

766
00:38:52,720 --> 00:38:54,720
There is nothing left.

767
00:38:54,720 --> 00:38:57,720
No. That was a funk.

768
00:38:58,720 --> 00:38:59,720
Wow!

769
00:39:00,720 --> 00:39:02,720
It's like somebody blew up an igloo.

770
00:39:02,720 --> 00:39:04,720
Look at this debris field.

771
00:39:04,720 --> 00:39:08,720
Explosives that move really quickly tend to rip and tear things.

772
00:39:08,720 --> 00:39:11,720
Explosives that move slowly move things.

773
00:39:11,720 --> 00:39:15,720
That's what this did. It moved slowly but very powerfully.

774
00:39:15,720 --> 00:39:19,720
And it just spread all this ice all over the field here.

775
00:39:20,720 --> 00:39:22,720
I think we're working on a pretty good formula here.

776
00:39:22,720 --> 00:39:25,720
You see something crazy on the Internet and want to know if it's true.

777
00:39:25,720 --> 00:39:28,720
So you send it to us, we try it out and find out, yes it's true.

778
00:39:28,720 --> 00:39:32,720
This is what we do on this cluster. We blow it up so you don't have to.

779
00:39:39,720 --> 00:39:47,720
Tori, Grant and Kerry have busted the myth that vibrations from a souped up car stereo triggered a bunch of dodgy rifles.

780
00:39:47,720 --> 00:39:53,720
But Tori's found a related myth that's easy to test and guaranteed to end with a bang.

781
00:39:53,720 --> 00:39:58,720
Well, we've come a long way accidentally setting off one of these SKS rifles.

782
00:39:58,720 --> 00:40:01,720
But you know what, we're not done yet. There's one other thing I want to try.

783
00:40:01,720 --> 00:40:02,720
What's that?

784
00:40:02,720 --> 00:40:07,720
Now apparently during this turf war a bomb goes off in a gangsters house and wipes out his entire gang.

785
00:40:07,720 --> 00:40:13,720
Now after the explosion the police go through the debris and find these SKS rifles with empty shells next to him.

786
00:40:13,720 --> 00:40:18,720
However, nobody in the neighborhood heard gunshots before or after the explosion.

787
00:40:18,720 --> 00:40:21,720
So the idea is that the shock wave set off the weapons.

788
00:40:21,720 --> 00:40:23,720
Apparently so.

789
00:40:23,720 --> 00:40:28,720
The guys know that a springless SKS could be seen as an accident waiting to happen.

790
00:40:28,720 --> 00:40:36,720
But where sound waves failed to set the firing pin a quiver, a high explosive shock wave might do the trick.

791
00:40:36,720 --> 00:40:44,720
To find out they build a mock living room and carefully place four loaded rifles just where you'd expect to find them.

792
00:40:44,720 --> 00:40:47,720
Now we're going to deliver a special package of C4 to this scene.

793
00:40:47,720 --> 00:40:50,720
We're going to be safely down in the bunker when it goes off.

794
00:40:50,720 --> 00:40:56,720
And after a big explosion we're going to see if the percussive force from a bomb can actually set off any of our firearms.

795
00:40:56,720 --> 00:41:00,720
Either way we're getting destruction. We're all pretty happy about that.

796
00:41:00,720 --> 00:41:02,720
Special delivery for Mr. Buster.

797
00:41:03,720 --> 00:41:11,720
If sound waves can set a speaker cone dancing like this, just imagine the percussive force of a high explosive shock wave.

798
00:41:11,720 --> 00:41:13,720
You know what the thing that's really bumming me out about this?

799
00:41:13,720 --> 00:41:15,720
Is we're probably going to damage these guns.

800
00:41:15,720 --> 00:41:18,720
I guess if you want to make almonds you got to break a few eggs.

801
00:41:18,720 --> 00:41:21,720
Let's hope they finally break something.

802
00:41:23,720 --> 00:41:27,720
JD saunters back to the bunker as our guys weigh the odds.

803
00:41:27,720 --> 00:41:29,720
Alright, quick predictions.

804
00:41:29,720 --> 00:41:34,720
Okay, I think if any of the guns are going to go off it's going to be the one in Buster's hand because I've got his finger on the trigger.

805
00:41:34,720 --> 00:41:40,720
I don't think that any of the guns are going to go off. I don't think that this is even enough energy to make them go off.

806
00:41:40,720 --> 00:41:43,720
Alright, this is explosion setting off SKS rifles.

807
00:41:43,720 --> 00:41:45,720
Alright, Carrie, take it away.

808
00:41:45,720 --> 00:41:48,720
In three, two, one!

809
00:41:52,720 --> 00:41:53,720
Nice!

810
00:41:54,720 --> 00:41:55,720
Nice one, JD!

811
00:41:55,720 --> 00:41:57,720
That never gets old.

812
00:41:58,720 --> 00:42:03,720
It's the blast we were begging for, but did it trigger even one of the guns?

813
00:42:05,720 --> 00:42:07,720
Wow, you're not a wreck of party!

814
00:42:07,720 --> 00:42:08,720
Oh my god!

815
00:42:08,720 --> 00:42:09,720
Now that easy part, finding the guns.

816
00:42:09,720 --> 00:42:11,720
Look at this hole right where the package was.

817
00:42:11,720 --> 00:42:13,720
Alright, should we check them?

818
00:42:13,720 --> 00:42:14,720
Yeah.

819
00:42:14,720 --> 00:42:16,720
That one didn't go off.

820
00:42:16,720 --> 00:42:17,720
Let's check Buster.

821
00:42:18,720 --> 00:42:21,720
Alright, show us what you got.

822
00:42:21,720 --> 00:42:22,720
Okay.

823
00:42:22,720 --> 00:42:24,720
Look at that one, the safety actually went back on.

824
00:42:24,720 --> 00:42:25,720
Nope.

825
00:42:25,720 --> 00:42:27,720
Didn't fire off.

826
00:42:27,720 --> 00:42:31,720
Alright, that was the one that was in his hands with the finger on the trigger.

827
00:42:31,720 --> 00:42:34,720
Two guns down and two to go.

828
00:42:36,720 --> 00:42:38,720
Watch out!

829
00:42:39,720 --> 00:42:41,720
The round went off!

830
00:42:41,720 --> 00:42:43,720
Oh my god!

831
00:42:44,720 --> 00:42:52,720
It's no surprise that a C4 shockwave has the edge on one of the world's best and loudest car sound systems.

832
00:42:52,720 --> 00:42:54,720
But at least we've got a result.

833
00:42:54,720 --> 00:42:56,720
Last one.

834
00:42:57,720 --> 00:42:58,720
Wow!

835
00:42:58,720 --> 00:42:59,720
It didn't go off.

836
00:42:59,720 --> 00:43:00,720
You know what?

837
00:43:00,720 --> 00:43:03,720
One did and one out of four, I say this is plausible.

838
00:43:03,720 --> 00:43:07,720
Yeah, I mean, the gun fired as a result of the explosion.

839
00:43:07,720 --> 00:43:08,720
Plausible.

840
00:43:08,720 --> 00:43:09,720
I'd buy that plausible.

841
00:43:09,720 --> 00:43:12,720
That is crazy, I can't believe it worked.

842
00:43:12,720 --> 00:43:17,720
After days of disappointment, this should at least send them home happy.

843
00:43:17,720 --> 00:43:19,720
And the message couldn't be clearer.

844
00:43:19,720 --> 00:43:23,720
It's unsafe to leave loaded guns in exploding rooms.