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On this episode of Mythbusters...

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That's it, come on!

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High flyers Adam and Jamie get caught up in a tall tail from the world of physics.

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They're asking if birds in a truck take flight, does the trailer get lighter?

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They're all flying.

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And Carrie Grant and Tori get all bent out of shape on the biggest build of their mythbusting careers.

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Jamie makes it look so easy when he does it.

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If a boat traveling at 25 miles an hour crashes into a channel marker, will it split in two?

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Who are the Mythbusters?

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Adam Savage

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He's everybody ready for time.

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And Jamie Heidemann

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It's me, all worked up, just looking at it.

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That is beautiful!

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Between them more than 30 years of special effects experience.

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That was heavy.

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Joining them, Grant Imahara.

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Are you feeling lucky punk?

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Tori Bellachy

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Somebody ordered some exploding pants.

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And Carrie Byron

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High explosives and electricity.

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They don't just tell the myths, they put them to the test.

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Okay Adam, what have you got for us?

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Here's the story.

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The guy is driving behind a big truck and every time the big truck gets to a bridge, it stops.

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The driver of the truck gets out, bangs on the side and then proceeds across the bridge.

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He runs into the truck driver to gas station and says, why are you banging on the truck?

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And the truck driver says, well, I got a load of birds and they're over the weight limit of most of these local bridges.

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So whenever I get to one, I bang on the truck, they fly around and my truck is lighter.

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Clever.

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So the myth for us is, if you're driving around with a truck loaded of birds and they take flight, is your truck lighter.

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So the question is, will a container full of flapping feathery friends lighten the load?

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For years, this simple concept has had big brain boffins baffle.

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On campus, it's a conundrum that's frazzled physicists, not to mention the furor on the fan site.

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Sounds like a job for the myth busters.

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Should we start small or should we go for the whole enchilada all at once?

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Well, obviously eventually we're going to need a truck, but I think we can start right now by going out, catching a bird,

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building a chamber and seeing if it weighs the same when the bird is sitting in it as opposed to when the bird is flying in it.

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Okay, well, I got some pretty sensitive scales downstairs and I can probably dig up a net somewhere.

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Let's do it.

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All right.

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For this myth to take flight, our dynamic duo have to land some pigeons.

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And in a scene straight from Hitchcock, the birds appear from nowhere.

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Pigeon whisperer Adam and accomplice Jamie use a variety of snares, nets and snacks.

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The birds will be too fat to fly.

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But their pigeon stalking comes to zero and they realize they need some help.

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Enter Kate Martin, pigeon wrangler.

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I brought you some pigeons.

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Awesome.

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Come on you guys.

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Two pigeons in an official pigeon carrier.

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Look at that.

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Finally, Adam's all pigeoned up and ready to begin small scale testing.

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A clear plastic chamber will double up as a truck trailer and when activated,

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a vibrating floor will encourage the pigeons to take flight.

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But this is your gig, Adam.

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Why don't you take us through it?

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I've got my bird flying chamber here.

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It's got a closed top.

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The bottom is a screen which I can vibrate by plugging into this battery.

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The whole thing is standing on top of a very sensitive scale.

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First thing I'm going to do is turn on the scale which will zero it out.

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Then I'm going to put the birds in and I'm going to see the birds weigh a certain amount.

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Then I'm going to turn on the platform which will vibrate.

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Hopefully they'll fly around and we'll see if there's any difference.

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So if the myth is true, when the pigeon gets some air,

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the combined weight of the chamber and bird will come down.

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Sounds simple.

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That's it.

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Come on.

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Come on.

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Take off.

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Take off.

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Now there's your problem.

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The bird just ain't flying.

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I don't blame him.

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I mean because it's not like...

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You can barely get a full wing span in there.

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Yeah.

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You know, he's running into the sides.

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Maybe we need to build a bigger chamber.

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So plan B is a bigger chamber and better motivation to fly than a vibrating floor.

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What have you got, Jamie?

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My current favorite is thinking about setting up a weed whacker like a fair

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and we could put like a half a dozen motors so that there's just a...

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It's just kind of whizzing around.

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I mean, I can't imagine this would hurt him.

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I mean, it doesn't hurt you, right?

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No.

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For our animal loving viewers, let's be clear.

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Adam's pain threshold is way below the pigeons.

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So if Adam's okay, the bird will be too.

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All right, so if you haven't been paying attention,

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my first attempt at the small scale pigeon experiment did not work

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because the chamber was too small and the pigeon didn't want to fly.

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I have fixed those problems.

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I believe I'm going to hang this, use a different pigeon annoying technique,

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and I'm using a bigger tank so he can actually fly around.

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I feel like calling this guy Jackson for some reason.

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I have a nephew whose name is Jackson

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and I have another nephew whose middle name is Jackson.

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He doesn't remind me of either of them.

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Okay, Jackson, you're up.

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Now remember, all you got to do is what you were born to do.

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Fly.

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It freaked me out, but it's not doing anything to him.

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Come on, come on, come on, come on, come on, come on.

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That's pigeon for a fly.

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It's also desperate because if they can't get Jackson to take off

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and stay airborne, this myth is grounded.

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Okay guys, check this out. I found it on the internet.

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Whoa.

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Is that Photoshopped?

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Apparently not.

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And supposedly the boat hit the channel marker at 25 miles per hour.

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Seriously? That split up the middle like what, 15 feet?

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17 feet, actually.

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Haha, you know what I see in our near future.

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Yeah, crashing boats.

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Absolutely.

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This tall tale of hijinks on the high seas has two halves,

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literal.

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We know it happened because it's been well documented,

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but the myth is in the details.

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Apparently in this watery fender bender,

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the boat bifurcation occurred at 25 miles per hour.

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Fact? Or has someone got their facts bent out of shape?

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So what's planned?

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Alright, this is what we do.

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We rent one of these speed boats, we take some insurance out,

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and we crash it into a channel marker.

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And we tell them we're going 25 miles an hour.

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Exactly.

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Okay, why not?

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Well, the $350,000 price tag and a bad rep with insurance companies

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is why not.

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But all is not lost.

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Down at John Beery Yachts, our trio of thrill seekers

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get the opportunity to experience the power behind the power boat.

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And Sean, their high speed chauffeur for the day,

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has even heard of the myth.

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So the myth that we're working on here today

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actually came from the internet.

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There's this photo going all over of a sports performance boat,

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not yours, but one sort of like that,

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that apparently was going 25 miles an hour

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and bifurcated itself on a channel marker, 17 feet deep.

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Do you think that's possible at that kind of speed?

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In my opinion, no.

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The photograph that I viewed, that boat had to have been traveling

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at a much greater rate of speed to get the damage that I saw.

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Well, with a top speed of 150 miles per hour, faster we can do.

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But unfortunately, someone is going to quite literally miss the boat.

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Rose, Sam, Bo.

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Odd man out.

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No!

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Here is a chase boat!

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You've got to be kidding me!

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With just room for two, it's all but one aboard.

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That is loud!

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It's really loud.

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It's not like a quiet sport, is it?

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With engines and hearts racing,

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Grant discovers his voice hasn't broken.

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Okay.

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Ha ha ha ha ha!

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There aren't any seatbelts in this thing, are there?

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With the speedo approaching 100 miles an hour,

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no wonder Grant's nervous.

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Wow!

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Ha ha ha!

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Great!

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Are you trying to hold my hand?

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No, I just tried to hold on to something!

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By now, the guys at Donzie Performance Boats have realized

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Cary and Grant can't afford the fuel for this trip.

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Never mind the boat.

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And this myth investigation is anchored at Square One.

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Next on Myth Busters.

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Shimbucks.

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Tori takes the crash tests into his own hands,

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and then things get out of hand.

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The Myth Busters are trying out for CSI.

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That's Crash Scene Investigation.

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They're asking, can you bifurcate your boat

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in a collision with a channel marker?

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The only evidence they have is this photo

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and accompanying reports that the boat was traveling at 25 miles per hour.

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To find out if this is possible,

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our team want to replicate myth conditions and impale their own boat.

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But with a brand new boat way out of their price range,

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our crack team of researchers has found the bargain of a lifetime.

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Not too many holes?

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No, this is going to be great.

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I think it's perfect.

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Yeah.

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You think it's seaworthy?

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I don't know if it's seaworthy, but...

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It's definitely crash worthy.

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We got this boat for a bargain.

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It was only $1500.

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We're talking about boats that can be up to $350,000.

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So we were a little apprehensive about when it showed up,

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what it was going to look like.

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It turns out it's amazing.

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The structure is perfect.

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It may not have an engine,

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but we'd have to take that out anyway.

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So we're really, really excited.

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No wonder Carrie is excited,

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because with the full-scale boat dry docked in the Myth Busters marina,

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the team can move on.

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And first up are some small-scale crash tests.

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And this one-tenth model is a great starting point.

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Oh, I love this boat.

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It's my favorite boat.

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I don't want to crash it.

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Okay, we need to crash these boats over and over.

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I need to make several of them.

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So I need to make a mold of this particular model boat.

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I'll make a silicone mold.

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I'll paint silicone over this in two halves.

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Make another mold on top of that.

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Then I'll be able to pull it apart and lay up any material I want inside the mold.

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Done.

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Okay.

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And to match the motor boat in the Myth,

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Tari's material of choice is fiberglass.

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It's nasty and noxious,

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so Tari is banished outside to finish up,

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which he does by gluing the hardened halves together.

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And before you can say,

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it's a purification,

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Tari's got himself some mighty fine toy boats.

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He's pretty.

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Meanwhile,

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Grad has been working on a rig to tow the models into a replica channel marker,

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simulating the mythical impalement impact.

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His remote-controlled winch and trolley is calibrated,

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so the boat crashes into the steel pole

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in exactly the same place as the Myth,

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just to the left of the bow.

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But hold on.

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Where'd the H2O go?

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I might be wondering why we're doing our small-scale experiments on land

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as opposed to water,

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since ostensibly the Myth is about a boat on water.

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Well, there are two reasons.

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First, water, not unlike many primal forces,

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doesn't scale correctly in miniature.

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It has a different response than it does in full scale.

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Now, the second reason, and I think more importantly,

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is that this Myth is about kinetic energy,

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a mass at a certain velocity hitting an object.

256
00:12:19,000 --> 00:12:22,000
And that we can certainly do on land.

257
00:12:22,000 --> 00:12:25,000
So this is a dry run in more ways than one.

258
00:12:25,000 --> 00:12:27,000
Take us through it, Carrie.

259
00:12:27,000 --> 00:12:29,000
This is the setup for the small-scale experiment.

260
00:12:29,000 --> 00:12:31,000
We have a fiberglass boat,

261
00:12:31,000 --> 00:12:34,000
which is one-tenth the scale of our real life boat.

262
00:12:34,000 --> 00:12:36,000
It's also weighted to one-tenth the scale.

263
00:12:36,000 --> 00:12:39,000
It's sitting atop a trolley that grants created with a smart wheel

264
00:12:39,000 --> 00:12:42,000
so that it can correct itself all the way down a long cable,

265
00:12:42,000 --> 00:12:46,000
which is being pulled through a pulley into a channel marker,

266
00:12:46,000 --> 00:12:48,000
which is set stably into the ground.

267
00:12:48,000 --> 00:12:50,000
The entire thing is being controlled by a winch,

268
00:12:50,000 --> 00:12:52,000
which Grant can remote control from this end,

269
00:12:52,000 --> 00:12:54,000
and hopefully in the end,

270
00:12:54,000 --> 00:12:56,000
we'll have a perfect bifurcation

271
00:12:56,000 --> 00:12:58,000
as it crashes into that end of the shop.

272
00:12:58,000 --> 00:13:02,000
Three, two, one, go.

273
00:13:06,000 --> 00:13:09,000
No mythical split, just a glancing blow.

274
00:13:09,000 --> 00:13:11,000
Well, the boat's intact.

275
00:13:11,000 --> 00:13:14,000
And with everything to scale, there's only one thing for it.

276
00:13:14,000 --> 00:13:16,000
More speed.

277
00:13:16,000 --> 00:13:17,000
Should we ramp it up?

278
00:13:17,000 --> 00:13:18,000
Sure.

279
00:13:18,000 --> 00:13:22,000
Unfortunately, the only thing ramping up is the frustration level,

280
00:13:22,000 --> 00:13:26,000
as the kinks and glitches in their system work themselves out.

281
00:13:28,000 --> 00:13:30,000
Well, that's not gonna work.

282
00:13:30,000 --> 00:13:32,000
I see one problem.

283
00:13:33,000 --> 00:13:37,000
It's one of those days everything that can go wrong...

284
00:13:37,000 --> 00:13:40,000
Oh, we've biofocated the trolley.

285
00:13:40,000 --> 00:13:42,000
Goes wrong.

286
00:13:49,000 --> 00:13:51,000
But as Edison nearly said,

287
00:13:51,000 --> 00:13:56,000
myth-busting is 1% genius and 99% perseverance.

288
00:13:56,000 --> 00:13:58,000
And their patience is rewarded

289
00:13:58,000 --> 00:14:01,000
when they get some realistic collisions with the channel marker.

290
00:14:03,000 --> 00:14:05,000
Oh!

291
00:14:05,000 --> 00:14:07,000
That was cool.

292
00:14:07,000 --> 00:14:09,000
But despite increasing the speed,

293
00:14:09,000 --> 00:14:13,000
the impact and resulting damage peaks at glancing blow.

294
00:14:13,000 --> 00:14:16,000
Oh, that was cool.

295
00:14:16,000 --> 00:14:19,000
But Grant's frustrated, and his OCD kicks in.

296
00:14:19,000 --> 00:14:21,000
That's obsessive crash disorder.

297
00:14:21,000 --> 00:14:25,000
He wants to see some damage, and hence Tari a challenge.

298
00:14:25,000 --> 00:14:27,000
I will give you five bucks,

299
00:14:27,000 --> 00:14:31,000
and if you can ram this into the channel marker and break it.

300
00:14:31,000 --> 00:14:33,000
Ooh, five dollars?

301
00:14:33,000 --> 00:14:35,000
I'll give you ten bucks.

302
00:14:35,000 --> 00:14:38,000
That's a whole week's salary, but Tari can't resist.

303
00:14:38,000 --> 00:14:40,000
Ten bucks.

304
00:14:40,000 --> 00:14:42,000
Okay, so it can be done.

305
00:14:42,000 --> 00:14:45,000
And the team suspect the angle of attack was key.

306
00:14:45,000 --> 00:14:48,000
Like in the myth, Tari was aiming to the left of the bow,

307
00:14:48,000 --> 00:14:50,000
and he adds a turn into the pole.

308
00:14:50,000 --> 00:14:52,000
If it can do it like that,

309
00:14:52,000 --> 00:14:55,000
that shows me maybe the turn is the way to go.

310
00:14:55,000 --> 00:14:58,000
Let me try it again, just going straight,

311
00:14:58,000 --> 00:15:00,000
and see what happens.

312
00:15:00,000 --> 00:15:02,000
With an attempted head-on collision,

313
00:15:02,000 --> 00:15:04,000
it's back to glancing blow.

314
00:15:04,000 --> 00:15:07,000
And with that discovery, the small-scale tests are back on track.

315
00:15:07,000 --> 00:15:11,000
To be sure, Tari once again adds that last-minute twist.

316
00:15:11,000 --> 00:15:13,000
And, why do you know?

317
00:15:13,000 --> 00:15:15,000
Well, that tells us a lot.

318
00:15:15,000 --> 00:15:19,000
It tells us it's better to hit the marker at a turn

319
00:15:19,000 --> 00:15:21,000
as opposed to just going straight into it.

320
00:15:21,000 --> 00:15:23,000
Finally, a result.

321
00:15:23,000 --> 00:15:25,000
But it's been a long and frustrating day,

322
00:15:25,000 --> 00:15:29,000
and Tari and Grant feel the need to let off some steam.

323
00:15:29,000 --> 00:15:39,000
I am so sick doing small-scale experiments!

324
00:15:48,000 --> 00:15:51,000
Beat towns and eat your heart out.

325
00:15:51,000 --> 00:15:53,000
Okay, so how crazy was that?

326
00:15:53,000 --> 00:15:56,000
That it took Tari smashing that boat by hand into the pole

327
00:15:56,000 --> 00:16:00,000
before we could find out that we need to turn at the last minute to split it.

328
00:16:00,000 --> 00:16:03,000
You know, I think that these variables are just too tough to scale down.

329
00:16:03,000 --> 00:16:06,000
I think if we're going to test this for real, we need to go to full-scale.

330
00:16:06,000 --> 00:16:08,000
I propose we do this on land,

331
00:16:08,000 --> 00:16:10,000
because the Smith is really about kinetic energy.

332
00:16:10,000 --> 00:16:15,000
It's a mass, which is the boat, hitting the channel marker with a certain velocity.

333
00:16:15,000 --> 00:16:18,000
And doing it on water doesn't buy us anything extra.

334
00:16:18,000 --> 00:16:21,000
Yeah, and I think it would be a lot easier to control on land.

335
00:16:21,000 --> 00:16:24,000
Coming up, the bird in a truck story.

336
00:16:25,000 --> 00:16:27,000
Finally gets off the ground.

337
00:16:27,000 --> 00:16:29,000
Look at that!

338
00:16:39,000 --> 00:16:45,000
Among top-level physicists, it's a fundamental question with a hotly debated answer.

339
00:16:45,000 --> 00:16:48,000
If the weight of a truck full of birds is X,

340
00:16:48,000 --> 00:16:52,000
when the birds take flight, is it now X minus the weight of the birds?

341
00:16:52,000 --> 00:16:55,000
That is, does the truck get lighter?

342
00:16:56,000 --> 00:17:00,000
Adam and Jamie's first foray in the Smith fell flat,

343
00:17:00,000 --> 00:17:03,000
so it's time to look outside the box.

344
00:17:03,000 --> 00:17:06,000
Cue the aerodynamicist to speak some geek.

345
00:17:06,000 --> 00:17:09,000
We need your help. We've got a story that's come up that we're testing right now.

346
00:17:09,000 --> 00:17:13,000
It is a question that is all over the fansites.

347
00:17:13,000 --> 00:17:18,000
If you're driving with a truck load full of birds and they take flight inside your truck,

348
00:17:18,000 --> 00:17:21,000
is your truck actually lighter while they're flying around?

349
00:17:21,000 --> 00:17:25,000
That's actually a very often told physics urban legend.

350
00:17:25,000 --> 00:17:30,000
Can you tell us something about the mechanics of flight that would apply to this?

351
00:17:30,000 --> 00:17:35,000
I mean, we know birds flap their wings and there's lift involved, there's downward pressures.

352
00:17:35,000 --> 00:17:39,000
What's going on here that we need to be focusing on?

353
00:17:39,000 --> 00:17:45,000
Well, the basic premise of all flight, whether it be a helicopter or a plane

354
00:17:45,000 --> 00:17:48,000
or a bird flapping its wings or just even gliding,

355
00:17:48,000 --> 00:17:53,000
is that it takes air and deflects it downward

356
00:17:53,000 --> 00:17:59,000
and the downwards force on the air will in turn cause a reaction force upward

357
00:17:59,000 --> 00:18:04,000
that will help lift whatever the object is against the force of gravity.

358
00:18:04,000 --> 00:18:09,000
Wait, a helicopter and a bird are actually using the same physical principles to fly?

359
00:18:09,000 --> 00:18:13,000
Absolutely. It all comes down to Newton's laws.

360
00:18:13,000 --> 00:18:15,000
So let's get this straight.

361
00:18:15,000 --> 00:18:20,000
To get airborne, you push down on the air beneath you hard enough to lift your own weight

362
00:18:20,000 --> 00:18:24,000
and because the principle works for birds and helicopters alike,

363
00:18:24,000 --> 00:18:29,000
Jamie and Adam have an idea, which means the pigeons get a break.

364
00:18:29,000 --> 00:18:35,000
Pigeons are what the myth is about, but pigeons sometimes don't do exactly what you want them to do.

365
00:18:35,000 --> 00:18:41,000
So we figure that a similar sort of a thing that might show the same phenomenon

366
00:18:41,000 --> 00:18:45,000
if there is one would be a little helicopter that we can control.

367
00:18:45,000 --> 00:18:51,000
But it's not as simple as that. Flying a chopper in an enclosed space creates turbulence,

368
00:18:51,000 --> 00:18:53,000
making it hard to hover.

369
00:18:53,000 --> 00:18:58,000
So to run the bench test, Adam's built this rig, which will allow it to lift

370
00:18:58,000 --> 00:19:01,000
but keep it centrally tethered at the same time.

371
00:19:01,000 --> 00:19:07,000
Excellent. 52.0. 52.6.

372
00:19:08,000 --> 00:19:12,000
Adam has measured the weight difference of the container with and without the chopper.

373
00:19:12,000 --> 00:19:17,000
Now the question is, when the helicopter takes off, will the chamber get lighter?

374
00:19:21,000 --> 00:19:26,000
Hey, look, lift off! We've got to lift off! Look at that!

375
00:19:26,000 --> 00:19:29,000
The scale is not changing.

376
00:19:32,000 --> 00:19:35,000
52.6. 52.6.

377
00:19:38,000 --> 00:19:42,000
Dude! That's lift off!

378
00:19:42,000 --> 00:19:46,000
I so did not expect this rig to work.

379
00:19:49,000 --> 00:19:51,000
All right.

380
00:19:57,000 --> 00:20:02,000
In a break from myth-buster tradition, Adam has success with a scale test.

381
00:20:03,000 --> 00:20:06,000
I know that my helicopter weighs 6 tenths of a pound.

382
00:20:06,000 --> 00:20:13,000
So if the myth was true, I should have seen that meter go from 52.5 or 6 to 52 flat.

383
00:20:13,000 --> 00:20:17,000
But that's not the whole story. This myth is about birds,

384
00:20:17,000 --> 00:20:20,000
and trust Jamie to get straight to the heart of the problem.

385
00:20:20,000 --> 00:20:24,000
We've got to try it in a truck or something close to it with the birds.

386
00:20:24,000 --> 00:20:28,000
So it's full scale ahead, and after a myth-buster makeover,

387
00:20:28,000 --> 00:20:31,000
this trailer, standing in for the truck and the myth,

388
00:20:31,000 --> 00:20:35,000
will be full of flying birds for the final test weigh-in.

389
00:20:35,000 --> 00:20:39,000
That's cool. He looks like a little animal in a circus game.

390
00:20:41,000 --> 00:20:44,000
With the front fitted with clear plastic, Jess and Jamie are done,

391
00:20:44,000 --> 00:20:46,000
and it's time for a flight test.

392
00:20:46,000 --> 00:20:52,000
There are no scales yet, so this test is simply to confirm the birds are comfortable spreading their wings.

393
00:20:52,000 --> 00:20:55,000
If they don't, Adam and Jamie are back to square one.

394
00:20:55,000 --> 00:20:57,000
Hey!

395
00:20:57,000 --> 00:21:00,000
But it's immediately obvious there's plenty of room.

396
00:21:00,000 --> 00:21:03,000
So final prep on the big rig begins.

397
00:21:03,000 --> 00:21:05,000
The flight motivators go in first.

398
00:21:05,000 --> 00:21:10,000
These rotating foam tubes are supposed to keep the pigeons in the air.

399
00:21:17,000 --> 00:21:18,000
There we go.

400
00:21:18,000 --> 00:21:19,000
We have liftoff.

401
00:21:19,000 --> 00:21:25,000
Next, the team makes sure there are no nooks or crannies where the pigeons can land and take a rest.

402
00:21:25,000 --> 00:21:27,000
It works for myth-busters,

403
00:21:30,000 --> 00:21:32,000
but how about the pigeons?

404
00:21:32,000 --> 00:21:33,000
You ready?

405
00:21:33,000 --> 00:21:36,000
I have no idea what's going to happen here.

406
00:21:37,000 --> 00:21:42,000
So Adam and Jamie have finally got Jackson and friend to fly in an enclosed space.

407
00:21:45,000 --> 00:21:48,000
Now comes the tricky bit, catching a flock more birds,

408
00:21:48,000 --> 00:21:52,000
letting them loosen the trailer and accurately weighing them.

409
00:21:56,000 --> 00:22:02,000
The story of the bifurcated boat has brought Carrie Grant and Tori close to breaking point.

410
00:22:05,000 --> 00:22:12,000
And to prevent this parable of split personality from sinking without a trace, it's land ahoy.

411
00:22:13,000 --> 00:22:17,000
With the decision to move on to terra firma, the team is on firmer footing,

412
00:22:17,000 --> 00:22:22,000
because by supersizing their crash test rig, they have a ready-made plan.

413
00:22:23,000 --> 00:22:26,000
As before, the reinforced channel marker is at ground zero.

414
00:22:27,000 --> 00:22:30,000
Grant's winch system will be replaced by a tow truck,

415
00:22:30,000 --> 00:22:37,000
and the boat trailer, modified with a smart wheel, will steer accurately towards its date with disaster.

416
00:22:37,000 --> 00:22:42,000
But there's one final piece of the plan, how to get that last-minute turn.

417
00:22:43,000 --> 00:22:50,000
If we learn anything from our small-scale test, I think the turn is probably one of the most critical things.

418
00:22:50,000 --> 00:22:58,000
So there has to be some way for us to steer it into the channel marker at the last second.

419
00:22:58,000 --> 00:23:05,000
To get the boat to turn where we want it, maybe we could do is make a set of smart wheels at the front of the boat,

420
00:23:05,000 --> 00:23:08,000
and this will steer the boat wherever we want it to go.

421
00:23:09,000 --> 00:23:14,000
And then what we could do is put like a crossbar here, and you know, we'll put a post in the ground.

422
00:23:14,000 --> 00:23:20,000
So when this bar hits that post, it'll turn the wheels into the marker.

423
00:23:20,000 --> 00:23:22,000
Cool. Sounds good.

424
00:23:23,000 --> 00:23:29,000
So it's a done deal, and the newly named Mythity Split ups anchor and ships out.

425
00:23:29,000 --> 00:23:31,000
Say goodbye to the Mythity Split!

426
00:23:31,000 --> 00:23:37,000
It's port of call, a familiar dockside destination with an impeccable mythbuster pedigree.

427
00:23:37,000 --> 00:23:39,000
We're back here at the Alameda runway.

428
00:23:39,000 --> 00:23:42,000
This is the site of some of our more famous myths.

429
00:23:42,000 --> 00:23:47,000
And in fact, I'm sitting on the X right here, which is going to be our channel marker.

430
00:23:47,000 --> 00:23:53,000
It's also the spot where our compact compact in the end smashed into each other.

431
00:23:55,000 --> 00:23:59,000
Hoping to match that spectacular smash with a big bang of their own,

432
00:23:59,000 --> 00:24:03,000
the team embark on what's to become their toughest build effort.

433
00:24:03,000 --> 00:24:06,000
Why no? That's Spanish for good.

434
00:24:07,000 --> 00:24:11,000
Carrie and Grant begin by raising the channel marker into position.

435
00:24:11,000 --> 00:24:19,000
Now that we have the pole in place, the next step is to weld around the bottom of the pole to hold it in place to the plate.

436
00:24:19,000 --> 00:24:27,000
Then we're going to lay that heavy, heavy girder to the back of this pole and then triangulate railroad track to it.

437
00:24:27,000 --> 00:24:33,000
So it's going to be completely stationary and not going to move when we smash the boat into it.

438
00:24:33,000 --> 00:24:38,000
I'm just excited we got the pole in place. I'm going to do my pole dance.

439
00:24:38,000 --> 00:24:41,000
Not what you expected, huh?

440
00:24:41,000 --> 00:24:45,000
While Grant and Carrie have been cranking up the heavy metal,

441
00:24:45,000 --> 00:24:50,000
Tori has been trashing his trailer and adding the smart wheels.

442
00:24:50,000 --> 00:24:59,000
Now they can steer with a single cable tow and when the hull of the myth that he split hits the channel marker, the trailer won't be in the way.

443
00:25:00,000 --> 00:25:07,000
Finally, he adds these 55 gallon drums, which when filled with water will weigh the same as the missing engines.

444
00:25:07,000 --> 00:25:11,000
This whole myth is about mass moving at speed.

445
00:25:11,000 --> 00:25:15,000
So it's important that we have the correct mass as we're moving at the speeds that we're going to test.

446
00:25:15,000 --> 00:25:23,000
Meanwhile, Carrie and Grant are making triple sure the channel marker stays put when the myth that he split hits.

447
00:25:23,000 --> 00:25:32,000
The next step we have, or at least the next really big step we have, is that we're going to drill holes in various places all around this giant structure here

448
00:25:32,000 --> 00:25:40,000
so that we can implant foot long pieces of rebar into those holes, weld them to this structure.

449
00:25:40,000 --> 00:25:47,000
So not only is this going to be the heaviest thing you've ever seen, but it's also going to be clawed into the ground.

450
00:25:47,000 --> 00:25:51,000
Things are going so well, Grant finds time to hang around.

451
00:25:51,000 --> 00:25:59,000
The prep for the boat myth is going great so far. I just hope that the weather holds out.

452
00:25:59,000 --> 00:26:10,000
Just had to mention the weather, didn't you? And as the rain gets heavier, the problems mount and the work on the final stages slows to a crawl.

453
00:26:10,000 --> 00:26:15,000
I'm so over this one. I'm pretty much over this one.

454
00:26:15,000 --> 00:26:20,000
With Old Testament style flooding, maybe they could rename their boat the Ark.

455
00:26:20,000 --> 00:26:26,000
Yeah, I think we were a little bit worried that the fans might be upset that we weren't doing this on the water. Well, now we are.

456
00:26:26,000 --> 00:26:29,000
Despite the tough conditions, they pull through.

457
00:26:29,000 --> 00:26:32,000
Jamie makes it look so easy when he does it.

458
00:26:32,000 --> 00:26:35,000
And push on for a toe test of the trailer.

459
00:26:35,000 --> 00:26:41,000
I'm so excited. It works. It looks really cool. We got a boat car, or a car boat. I'm not sure which one.

460
00:26:41,000 --> 00:26:46,000
And with just the trigger to rig for the critical last minute turn, it's all hands on deck.

461
00:26:46,000 --> 00:26:50,000
We've mapped out exactly where the bow should hit the channel marker.

462
00:26:50,000 --> 00:27:01,000
And this, I'm drilling a hole right here for the trigger, which will turn the wheels, slam the boat into the channel marker, therein bifurcating the boat, or not.

463
00:27:01,000 --> 00:27:07,000
So the build is finally complete and Carriantori is celebrating.

464
00:27:07,000 --> 00:27:12,000
The boat has moved into position gently. No one wants the wheels to come off now.

465
00:27:12,000 --> 00:27:15,000
Right. Now for the moment of truth.

466
00:27:15,000 --> 00:27:21,000
At the opposite end of the track, Grant has the truck all hooked up and ready to tow.

467
00:27:21,000 --> 00:27:32,000
So these are chains connected to the tow truck. We've got our shackle. This is a breakaway rope for safety. And then the cable. I think we're ready to take up slack.

468
00:27:32,000 --> 00:27:39,000
And as Twilight descends, they're wet, cold, but ready to put this tail to the test.

469
00:27:39,000 --> 00:27:45,000
Alright, take it slow and then take it up to 25 miles an hour on my count. Ready?

470
00:27:45,000 --> 00:27:47,000
Ready.

471
00:27:47,000 --> 00:27:51,000
In three, two, one, go.

472
00:27:51,000 --> 00:28:03,000
This is it. Remember, they're asking if a speed boat at 25 miles per hour plus channel marker equals this kind of boat splitting destruction. We're about to find out.

473
00:28:03,000 --> 00:28:05,000
5 miles per hour.

474
00:28:05,000 --> 00:28:07,000
Can you guys go faster?

475
00:28:07,000 --> 00:28:09,000
10 miles per hour.

476
00:28:09,000 --> 00:28:11,000
But suddenly, disaster.

477
00:28:11,000 --> 00:28:13,000
Can we lose the cable?

478
00:28:13,000 --> 00:28:15,000
Cable broke.

479
00:28:15,000 --> 00:28:29,000
As Tarry said, that's not good. The breakaway rope that's designed to break on impact snapped under the strain of the tow. And with this last minute failure in the fading light, team unity is the first casualty.

480
00:28:29,000 --> 00:28:44,000
So for all the other things where we tow something big into something else and it crashes, we use a breakaway rope. And there's a standard one that we've been using, which is a blue marine rope. We know it's breaking strength is 6,000.

481
00:28:44,000 --> 00:28:51,000
But on this particular one, Tori really didn't want to use that. He wanted to use this.

482
00:28:51,000 --> 00:29:00,000
So, but tomorrow, I think what we're going to do is go back to what we used to use that was working.

483
00:29:00,000 --> 00:29:03,000
Dude, we've never used the blue rope.

484
00:29:03,000 --> 00:29:05,000
We always use the blue rope.

485
00:29:05,000 --> 00:29:07,000
No, we haven't.

486
00:29:07,000 --> 00:29:09,000
Yes, we do.

487
00:29:09,000 --> 00:29:19,000
Seeing as Grant and Tori are rejecting each other's reality and substituting their own, this argument is on a road to nowhere. Let's come back tomorrow.

488
00:29:19,000 --> 00:29:26,000
After the break, our crash scene investigators get the crash they've been waiting for.

489
00:29:26,000 --> 00:29:36,000
And Burn in a Truck sees Adam and Jamie ramp up the pigeon hunt.

490
00:29:40,000 --> 00:29:46,000
Bifurcated Boat has once again brought our wet and mild mythbusters to breaking point.

491
00:29:46,000 --> 00:29:47,000
We always use the blue rope.

492
00:29:47,000 --> 00:29:48,000
No, we haven't.

493
00:29:48,000 --> 00:29:49,000
Yes, we do.

494
00:29:49,000 --> 00:29:50,000
No, we're the breakable.

495
00:29:50,000 --> 00:29:51,000
Yes, we do.

496
00:29:51,000 --> 00:29:53,000
But all that actually breaks are their voices.

497
00:29:53,000 --> 00:30:02,000
And in the cold dark of the next day, they once again prepare the good ship, Mythity Split, for its 25 mile an hour collision.

498
00:30:02,000 --> 00:30:03,000
Cool.

499
00:30:03,000 --> 00:30:10,000
Positions everyone. Jess takes her place in the tow truck and the rest of the team stand by, level with the crash zone.

500
00:30:10,000 --> 00:30:12,000
Okay, Jess, are you ready?

501
00:30:12,000 --> 00:30:14,000
Ready when you are.

502
00:30:14,000 --> 00:30:18,000
Here we go in three, two, one, drive.

503
00:30:20,000 --> 00:30:22,000
Alright, we're at five miles per hour.

504
00:30:22,000 --> 00:30:24,000
Okay, gosh.

505
00:30:24,000 --> 00:30:26,000
Now we're at 10 miles per hour.

506
00:30:28,000 --> 00:30:30,000
15 miles per hour.

507
00:30:30,000 --> 00:30:31,000
Yeah!

508
00:30:31,000 --> 00:30:33,000
It's picking up. Come on.

509
00:30:33,000 --> 00:30:35,000
Oh my god, I can't believe this is going to happen.

510
00:30:35,000 --> 00:30:36,000
20 miles per hour.

511
00:30:36,000 --> 00:30:37,000
Woo!

512
00:30:37,000 --> 00:30:38,000
It's perfect!

513
00:30:38,000 --> 00:30:39,000
That's 25.

514
00:30:39,000 --> 00:30:41,000
Here it goes, here it goes, here it goes, here it goes!

515
00:30:45,000 --> 00:30:46,000
Yeah!

516
00:30:50,000 --> 00:30:51,000
Wow!

517
00:30:51,000 --> 00:30:52,000
It's beautiful!

518
00:30:52,000 --> 00:30:53,000
It hit it right on target.

519
00:30:53,000 --> 00:30:55,000
Great job, you guys.

520
00:30:55,000 --> 00:30:56,000
Well, the rig works.

521
00:30:56,000 --> 00:31:01,000
And big things hitting big things always equals happy Mythbusters.

522
00:31:01,000 --> 00:31:05,000
Look how much damage it did to the channel markers in the family.

523
00:31:05,000 --> 00:31:08,000
But look, look at where the trailer is.

524
00:31:08,000 --> 00:31:09,000
It totally turned.

525
00:31:09,000 --> 00:31:10,000
It turned!

526
00:31:10,000 --> 00:31:11,000
It worked!

527
00:31:11,000 --> 00:31:14,000
25 miles per hour, you can see it for yourself.

528
00:31:14,000 --> 00:31:15,000
No bifurcation.

529
00:31:15,000 --> 00:31:19,000
I guess the story might not have happened exactly as it was reported.

530
00:31:19,000 --> 00:31:22,000
So we're going to say 25 miles an hour, it's busted.

531
00:31:22,000 --> 00:31:25,000
Oh, the story's busted at 25, and so is our trailer.

532
00:31:25,000 --> 00:31:27,000
Dude, it worked definitely.

533
00:31:27,000 --> 00:31:29,000
It's going to turn right into the channel, aren't it?

534
00:31:29,000 --> 00:31:30,000
Yeah, busted.

535
00:31:30,000 --> 00:31:33,000
So, busted is the unanimous verdict.

536
00:31:33,000 --> 00:31:37,000
And a closer look at the boat reveals no evidence to the contrary.

537
00:31:37,000 --> 00:31:38,000
Whoa!

538
00:31:38,000 --> 00:31:40,000
Oh my god, and some serious damage.

539
00:31:40,000 --> 00:31:43,000
This is some serious damage, but no bifurcation.

540
00:31:43,000 --> 00:31:44,000
Yeah, look at it.

541
00:31:44,000 --> 00:31:45,000
Wow, look at that, you guys.

542
00:31:45,000 --> 00:31:48,000
It definitely indented, and it did do the turn.

543
00:31:48,000 --> 00:31:51,000
It did do the turn exactly as we predicted.

544
00:31:51,000 --> 00:31:54,000
I just don't think there was enough speed behind that momentum.

545
00:31:54,000 --> 00:31:55,000
No, definitely.

546
00:31:55,000 --> 00:31:59,000
If we were going faster, though, I could definitely see it splicing through this thing.

547
00:31:59,000 --> 00:32:03,000
Considering how much damage is done here, yeah, maybe if we were going a lot faster.

548
00:32:03,000 --> 00:32:05,000
Regular viewers will guess what's coming next.

549
00:32:05,000 --> 00:32:10,000
But for the uninitiated, the mythbusters are never quite satisfied until...

550
00:32:10,000 --> 00:32:12,000
I want to see some carnage.

551
00:32:12,000 --> 00:32:17,000
So, now the big question is, how are we going to try to do another run with this trailer?

552
00:32:17,000 --> 00:32:21,000
Because we want to try to see if we can get a bifurcation at 50 miles an hour.

553
00:32:21,000 --> 00:32:24,000
That's going to be the tricky part.

554
00:32:24,000 --> 00:32:27,000
We don't got a lot of time here, and we need to fix the trailer.

555
00:32:27,000 --> 00:32:30,000
So, we're going to try some quick and dirty methods to try to get this thing rolling.

556
00:32:30,000 --> 00:32:33,000
It doesn't have to roll well, it just has to go.

557
00:32:33,000 --> 00:32:38,000
So, our first try is going to be to take that corner, chain it to the channel marker.

558
00:32:38,000 --> 00:32:42,000
And then we're going to take the other corner, and we're going to try to pull on it,

559
00:32:42,000 --> 00:32:47,000
and maybe get the trailer to sort of reshape itself almost sort of square.

560
00:32:47,000 --> 00:32:49,000
It rolls!

561
00:32:49,000 --> 00:32:52,000
You might be able to do this again.

562
00:32:52,000 --> 00:32:54,000
Then we're going to try to cut off the first two wheels,

563
00:32:54,000 --> 00:32:58,000
so that the axles that are kind of bending into each other are gone.

564
00:32:58,000 --> 00:33:01,000
And then we'll just start dragging it.

565
00:33:01,000 --> 00:33:04,000
And then it rolls at all, at all!

566
00:33:04,000 --> 00:33:06,000
We're going to stick the boat on it, and we're going to throw it back there,

567
00:33:06,000 --> 00:33:09,000
and we're going to drag it into this bad boy.

568
00:33:09,000 --> 00:33:11,000
Yeah!

569
00:33:11,000 --> 00:33:13,000
Looks good!

570
00:33:13,000 --> 00:33:15,000
I think we can do another run!

571
00:33:15,000 --> 00:33:19,000
You get one single bad run, and that's it!

572
00:33:19,000 --> 00:33:21,000
One!

573
00:33:21,000 --> 00:33:24,000
This is right. One single bad run.

574
00:33:24,000 --> 00:33:28,000
The prospect of high speed carnage does wonders for the morale.

575
00:33:29,000 --> 00:33:34,000
And even another icy shower during the reset can dampen their spirits.

576
00:33:34,000 --> 00:33:37,000
Consider your next vacation to the runway at Alameda.

577
00:33:37,000 --> 00:33:40,000
Beautiful views of San Francisco and the Bay Bridge.

578
00:33:40,000 --> 00:33:45,000
Plenty of space to stretch out and smash big things into other big things.

579
00:33:45,000 --> 00:33:48,000
Rain? We got plenty of it.

580
00:33:48,000 --> 00:33:52,000
So call your travel agent, the runway at Alameda.

581
00:33:52,000 --> 00:33:57,000
Okay, escape plan same as last time, if the boat's coming at you, run.

582
00:33:57,000 --> 00:34:00,000
Alright, so we busted the 25-mile-an-hour myth.

583
00:34:00,000 --> 00:34:02,000
So let's do this one.

584
00:34:02,000 --> 00:34:03,000
Count it down!

585
00:34:03,000 --> 00:34:04,000
Jess, you ready?

586
00:34:04,000 --> 00:34:06,000
I'm more than ready.

587
00:34:06,000 --> 00:34:10,000
Alright, on my countdown. Ready in three, two, one.

588
00:34:13,000 --> 00:34:16,000
The question is a fansite favorite.

589
00:34:16,000 --> 00:34:21,000
If the birds in a truck take flight, is the truck lighter than when the birds are at rest?

590
00:34:21,000 --> 00:34:26,000
To answer, Adam and Jamie have weight on their minds.

591
00:34:27,000 --> 00:34:30,000
The more I think about this, the more I think that not only do we need a really sensitive scale,

592
00:34:30,000 --> 00:34:32,000
but we also...

593
00:34:32,000 --> 00:34:36,000
Well, if you think about the birds moving around in this truck, they're going to be shifting the weight of it.

594
00:34:36,000 --> 00:34:38,000
It's like, you know, you or I dancing on a bathroom scale.

595
00:34:38,000 --> 00:34:40,000
It's not a consistent weight.

596
00:34:40,000 --> 00:34:44,000
So we want to be able to graph the weight of this thing as it changes.

597
00:34:44,000 --> 00:34:48,000
We want to be able to look at the final thing as, like, points on a graph over time.

598
00:34:48,000 --> 00:34:51,000
Well, you know, there are these things called load cells.

599
00:34:51,000 --> 00:34:54,000
They're an instrument that detects pressure.

600
00:34:54,000 --> 00:35:00,000
And maybe we could use those as a sensor that we put in each corner of the truck body

601
00:35:00,000 --> 00:35:02,000
and plug them into a computer.

602
00:35:02,000 --> 00:35:06,000
In fact, and now that I think about it, there was this company that approached me some time ago

603
00:35:06,000 --> 00:35:10,000
that has a computer that's made to take, like, 16 sensor inputs.

604
00:35:10,000 --> 00:35:14,000
It could easily take the load cells as inputs, and they probably could graph it any which way we want.

605
00:35:14,000 --> 00:35:15,000
Yeah.

606
00:35:15,000 --> 00:35:16,000
That's perfect.

607
00:35:16,000 --> 00:35:19,000
Why don't you call those guys and I'll get on finding us some load cells.

608
00:35:19,000 --> 00:35:20,000
Okay.

609
00:35:20,000 --> 00:35:22,000
Hey, Adam. How about this one?

610
00:35:22,000 --> 00:35:25,000
This is going to be what weighs our truck.

611
00:35:25,000 --> 00:35:26,000
This is a load cell.

612
00:35:26,000 --> 00:35:32,000
We're going to put one under each corner, and as the trailer sits on this, this piece of metal will bend a little bit.

613
00:35:32,000 --> 00:35:37,000
That bent will be registered by a crystal on the side here, which will output a change in voltage through this wire

614
00:35:37,000 --> 00:35:43,000
that will be read by our computer and output as points on a graph over time.

615
00:35:43,000 --> 00:35:47,000
It measures up to 500 pounds down to a sensitivity of, like, a tenth of an ounce.

616
00:35:47,000 --> 00:35:50,000
It is perfect for our needs.

617
00:35:50,000 --> 00:35:56,000
And with this computer collating that info while providing a real-time graph of the changing weight of the trailer,

618
00:35:56,000 --> 00:35:59,000
Grant's inner geek gets out.

619
00:35:59,000 --> 00:36:01,000
Wheeeee.

620
00:36:01,000 --> 00:36:09,000
Now, all they need is a bunch of birds, and Jamie, undaunted by their recent failure, has a cunning plan.

621
00:36:09,000 --> 00:36:13,000
I figured Jackson can be sort of a stool pigeon, I think they call it.

622
00:36:13,000 --> 00:36:16,000
That's a good solution, I think.

623
00:36:16,000 --> 00:36:19,000
If he gets a bunch of visitors, we'll have a bunch of pigeons.

624
00:36:19,000 --> 00:36:21,000
All right?

625
00:36:21,000 --> 00:36:23,000
I love it, I think it's great.

626
00:36:23,000 --> 00:36:25,000
Good luck, Jackson.

627
00:36:25,000 --> 00:36:29,000
Surrounded by bird feed, Jackson settles in for the free buffet.

628
00:36:29,000 --> 00:36:36,000
But once again, the local pigeons are just too smart, so the undaunted Jamie has been daunted.

629
00:36:36,000 --> 00:36:37,000
I'm giving up.

630
00:36:37,000 --> 00:36:40,000
And the only bird brain in a net is Adam.

631
00:36:41,000 --> 00:36:44,000
We're not defeated by the task of catching pigeons.

632
00:36:44,000 --> 00:36:49,000
Even though it's not critical to this myth, it's a point of pride.

633
00:36:49,000 --> 00:36:56,000
We're going to catch some pigeons with Mythbusters invention, and I think it's going to be a web shooter.

634
00:36:56,000 --> 00:36:59,000
It's the motto Mythbusters live by.

635
00:36:59,000 --> 00:37:02,000
If it's worth doing, it's worth overdoing.

636
00:37:02,000 --> 00:37:08,000
Jamie and I have discussed various plans, and I think we're going to build something similar to a potato cannon

637
00:37:08,000 --> 00:37:13,000
of plumbing parts made into an air chamber with an electrically operated valve

638
00:37:13,000 --> 00:37:21,000
and manifold that spreads four tennis balls with this net between them around our unsuspecting pigeons.

639
00:37:23,000 --> 00:37:24,000
You ready?

640
00:37:24,000 --> 00:37:25,000
All right.

641
00:37:25,000 --> 00:37:27,000
I'm ready.

642
00:37:27,000 --> 00:37:30,000
Three, two, one.

643
00:37:30,000 --> 00:37:37,000
Oh, wow.

644
00:37:37,000 --> 00:37:39,000
That was cool.

645
00:37:41,000 --> 00:37:42,000
That was cool.

646
00:37:42,000 --> 00:37:48,000
It works on Adam, but as we've seen, the pigeons round here are a lot smarter than the TV hosts.

647
00:37:48,000 --> 00:37:51,000
Jamie's hunting pigeon.

648
00:38:00,000 --> 00:38:06,000
Now listen, I know that there are many tried and true methods for catching pigeons that are quite simple,

649
00:38:06,000 --> 00:38:09,000
and I know that you're going to email them to us.

650
00:38:09,000 --> 00:38:12,000
The fact is we wanted to try a Mythbusters solution.

651
00:38:15,000 --> 00:38:22,000
But despite hardware Rambo would be proud of, the local pigeons remain as free as well as free as birds.

652
00:38:22,000 --> 00:38:28,000
Which means en route to the full-scale test, Kate the pigeon wrangler gets another call.

653
00:38:28,000 --> 00:38:30,000
And once again comes up Trumps.

654
00:38:30,000 --> 00:38:31,000
How many is that?

655
00:38:31,000 --> 00:38:33,000
I think we've got 36.

656
00:38:33,000 --> 00:38:34,000
That ought to do it.

657
00:38:35,000 --> 00:38:42,000
With the birds taken care of, Adam and Jamie can concentrate on setting up, and the abandoned naval yard is just perfect.

658
00:38:43,000 --> 00:38:51,000
This is the same location that we used for Killer Cable Snap, and we used it because it's got a big flat welding grid that is a nice level surface.

659
00:38:52,000 --> 00:38:57,000
For Killer Cable Snap we used it to weld to and anchor all the stuff for the cables.

660
00:38:57,000 --> 00:39:03,000
For birds on a truck, it makes perfect platform for the trailer to be on because we need it super level.

661
00:39:03,000 --> 00:39:08,000
The next thing that we're going to do is jack this trailer up and put it on blocks.

662
00:39:08,000 --> 00:39:14,000
On the top of each block in each corner, each of the four corners, will be a thing called the load cell.

663
00:39:14,000 --> 00:39:19,000
With all four load cells in position, Grant and Jess set up at the command center.

664
00:39:19,000 --> 00:39:22,000
They'll monitor the weight of the trailer throughout the experiment.

665
00:39:22,000 --> 00:39:29,000
Okay, so we've calibrated all of our load cells, which are the sensors that are going to tell us if there are any changes in the weight of the truck.

666
00:39:29,000 --> 00:39:31,000
Those are going into a computer.

667
00:39:31,000 --> 00:39:40,000
The computer is going to record all that information along with video in real time, so we can see if, when the birds fly up, if there are any changes in the weight.

668
00:39:41,000 --> 00:39:45,000
And with the pigeons in position and not flying, the team has starting weight.

669
00:39:46,000 --> 00:39:51,000
Okay, so that's a difference of 11 pounds with the birds in place.

670
00:39:51,000 --> 00:39:54,000
They'll zero everything out to that, and that'll be our starting point, right?

671
00:39:54,000 --> 00:39:55,000
Right.

672
00:39:55,000 --> 00:39:59,000
So if the weight drops while the birds are flying, the myth is confirmed.

673
00:39:59,000 --> 00:40:01,000
It's go time.

674
00:40:01,000 --> 00:40:03,000
Stand by and I'm recording now.

675
00:40:03,000 --> 00:40:05,000
Okay, I'm spinning the motors.

676
00:40:05,000 --> 00:40:10,000
Jess in three, two, one, go.

677
00:40:16,000 --> 00:40:19,000
You're off flying.

678
00:40:19,000 --> 00:40:21,000
It's beautiful.

679
00:40:21,000 --> 00:40:24,000
Most of them are flying. That's great.

680
00:40:24,000 --> 00:40:26,000
Okay, I'm ready. I'm going to call it, all right?

681
00:40:26,000 --> 00:40:27,000
All right.

682
00:40:27,000 --> 00:40:28,000
All right, we're done.

683
00:40:28,000 --> 00:40:29,000
Okay.

684
00:40:29,000 --> 00:40:31,000
And stopping.

685
00:40:32,000 --> 00:40:35,000
Woo! That worked better than I thought it would.

686
00:40:35,000 --> 00:40:38,000
They all flew for like a good maybe 15 seconds.

687
00:40:38,000 --> 00:40:39,000
That's great.

688
00:40:39,000 --> 00:40:42,000
And the high speed camera captures the moment.

689
00:40:42,000 --> 00:40:47,000
All the work we did is to get this shot that you could see them all flying and be weighing it all at the same time.

690
00:40:47,000 --> 00:40:48,000
It's just stunning.

691
00:40:48,000 --> 00:40:51,000
Yeah, it's all there and this is synced with what's on the computer.

692
00:40:51,000 --> 00:40:52,000
This is great.

693
00:40:52,000 --> 00:40:53,000
Good job, you guys.

694
00:40:53,000 --> 00:40:54,000
It's working.

695
00:40:54,000 --> 00:40:56,000
It's awesome.

696
00:40:57,000 --> 00:41:01,000
But getting a truckload of birds to fly isn't the point.

697
00:41:01,000 --> 00:41:04,000
The question is, does the trailer get lighter?

698
00:41:04,000 --> 00:41:06,000
So there's no difference when they were in the air.

699
00:41:06,000 --> 00:41:10,000
No, but you can see minor fluctuations happening very quick.

700
00:41:10,000 --> 00:41:17,000
What I see is the fluctuations have about the exact same amplitude, both above and below the zero point.

701
00:41:17,000 --> 00:41:21,000
I mean, it's a noisy signal, but here it's clear there's no difference.

702
00:41:21,000 --> 00:41:23,000
Yeah, that's great.

703
00:41:23,000 --> 00:41:25,000
Dude, that is beautiful.

704
00:41:27,000 --> 00:41:33,000
Although the data is quite noisy, which of course it would be with so many variables of, you know, 20 birds,

705
00:41:33,000 --> 00:41:38,000
it proves that the birds on a truck do not change the weight of that truck in any significant way.

706
00:41:39,000 --> 00:41:44,000
So the myth is busted, but Jamie and Adam still aren't quite satisfied.

707
00:41:44,000 --> 00:41:46,000
I think we busted this myth with the pigeons flat out.

708
00:41:46,000 --> 00:41:50,000
The data looks beautiful, but it's a bit noisy.

709
00:41:50,000 --> 00:41:55,000
This helicopter is going to be a very clean and stable signal.

710
00:41:55,000 --> 00:41:59,000
We should be able to see it on the graph much more steady than we see the birds,

711
00:41:59,000 --> 00:42:02,000
and this is the nail in the coffin for this myth.

712
00:42:02,000 --> 00:42:06,000
If we see no change in the weight of the trailer with the helicopter in it,

713
00:42:06,000 --> 00:42:09,000
it's busted again and once and for all.

714
00:42:09,000 --> 00:42:15,000
Stepping up for the tricky task of flying the remote controlled chopper is M5 shop assistant Chris,

715
00:42:15,000 --> 00:42:18,000
and his boss Jamie is full of encouragement.

716
00:42:18,000 --> 00:42:22,000
Chris is well motivated to not crash the helicopter.

717
00:42:22,000 --> 00:42:30,000
You know, it's a fairly expensive helicopter, so, you know, it'll just come out of his pay if he does any harm to it.

718
00:42:30,000 --> 00:42:32,000
Either that or I'll fire him.

719
00:42:32,000 --> 00:42:36,000
With thoughts of unemployment crowding his mind, how could he fail?

720
00:42:39,000 --> 00:42:43,000
Chris, we're ready to go when you want. Get that thing just a foot off the ground.

721
00:42:43,000 --> 00:42:44,000
Okay.

722
00:42:47,000 --> 00:42:49,000
Come on, baby.

723
00:42:49,000 --> 00:42:51,000
Whoa!

724
00:42:51,000 --> 00:42:53,000
Did you get it reading?

725
00:42:53,000 --> 00:42:55,000
Hold on.

726
00:42:55,000 --> 00:42:57,000
We're going to have to take a look.

727
00:42:58,000 --> 00:43:03,000
Unsurprisingly, that brief disastrous flight doesn't yield any results.

728
00:43:03,000 --> 00:43:06,000
Oh, dude.

729
00:43:08,000 --> 00:43:12,000
All right. Why don't you go back to the shop and get your other helicopter?

730
00:43:12,000 --> 00:43:14,000
We'll try and get a reading of it.

731
00:43:15,000 --> 00:43:19,000
Chris, despite Jamie's ominous silence, believes he's still employed,

732
00:43:19,000 --> 00:43:22,000
and soon returns with his own model chopper.

733
00:43:22,000 --> 00:43:26,000
Chris, hover that puppy as you will.

734
00:43:26,000 --> 00:43:28,000
Hey, Chris, tense much?

735
00:43:42,000 --> 00:43:43,000
It's off.

736
00:43:43,000 --> 00:43:45,000
Yeah!

737
00:43:45,000 --> 00:43:47,000
Okay, perfect.

738
00:43:47,000 --> 00:43:49,000
Shut it down. That was perfect.

739
00:43:49,000 --> 00:43:51,000
There was no bother with that, Halbert.

740
00:43:51,000 --> 00:43:53,000
But what about the results?

741
00:43:53,000 --> 00:43:54,000
It's off the ground.

742
00:43:54,000 --> 00:43:55,000
And the line's stable.

743
00:43:55,000 --> 00:43:57,000
The line is totally stable.

744
00:43:57,000 --> 00:43:59,000
And then when it gets back down...

745
00:43:59,000 --> 00:44:01,000
Give me some, man.

746
00:44:01,000 --> 00:44:02,000
That is beautiful.

747
00:44:02,000 --> 00:44:04,000
Perfect.

748
00:44:04,000 --> 00:44:06,000
No wonder they're pleased with themselves.

749
00:44:06,000 --> 00:44:09,000
This is the myth that just wouldn't die.

750
00:44:10,000 --> 00:44:12,000
This myth has been very persistent.

751
00:44:12,000 --> 00:44:14,000
It's been all over the fan site.

752
00:44:14,000 --> 00:44:18,000
It's been all over the web, and I'm glad we finally put it to rest.

753
00:44:18,000 --> 00:44:20,000
You can see what's going on here.

754
00:44:20,000 --> 00:44:22,000
It's very clear, especially with the helicopter.

755
00:44:22,000 --> 00:44:25,000
The helicopter is sitting there. Its weight is on the trailer.

756
00:44:25,000 --> 00:44:29,000
And at a certain point, the prop speed up appropriately.

757
00:44:29,000 --> 00:44:34,000
The weight is shifted away from the feet of the helicopter.

758
00:44:34,000 --> 00:44:38,000
And instead, it's replaced by air pushing down on the trailer.

759
00:44:38,000 --> 00:44:41,000
It's six of one, half a dozen, and the other.

760
00:44:41,000 --> 00:44:43,000
There's no free lunch here.

761
00:44:46,000 --> 00:44:47,000
Bust it.

762
00:44:47,000 --> 00:44:49,000
Totally bust it.

763
00:44:49,000 --> 00:44:51,000
Well, I thought we did a great job of it.

764
00:44:51,000 --> 00:44:53,000
I mean, the rig worked really well.

765
00:44:53,000 --> 00:44:57,000
Do you think this is going to somehow curb the furious debate on the fan site?

766
00:44:57,000 --> 00:44:59,000
Of course not.

767
00:44:59,000 --> 00:45:02,000
I bet it won't either, but man, this is the final word,

768
00:45:02,000 --> 00:45:06,000
because nobody else has ever gotten 20 birds flying simultaneously in a truck

769
00:45:06,000 --> 00:45:09,000
while weighing it every tenth of a second in your face.

770
00:45:09,000 --> 00:45:11,000
It's busted.

771
00:45:11,000 --> 00:45:12,000
It's busted.

772
00:45:22,000 --> 00:45:27,000
Carrie Grant and Tori have drowned the myth that at 25 miles per hour,

773
00:45:27,000 --> 00:45:30,000
you can have two boats for the price of one.

774
00:45:30,000 --> 00:45:35,000
But it wouldn't be mythbusters if the team didn't ramp it up

775
00:45:35,000 --> 00:45:38,000
in an attempt to replicate the results.

776
00:45:38,000 --> 00:45:40,000
So we've already busted the myth.

777
00:45:40,000 --> 00:45:45,000
By a fricated boat, 25 miles per hour, into a channel marker, it's busted.

778
00:45:45,000 --> 00:45:47,000
But that's not what this is about.

779
00:45:47,000 --> 00:45:51,000
This is about actually splitting the boat in two.

780
00:45:51,000 --> 00:45:55,000
So we set up a tow cable on each side of the channel marker.

781
00:45:55,000 --> 00:46:00,000
We're going for 50 miles an hour, and we're going to get this boat to split.

782
00:46:00,000 --> 00:46:02,000
Absolutely.

783
00:46:02,000 --> 00:46:04,000
All right, on my countdown.

784
00:46:04,000 --> 00:46:07,000
Ready in three, two, one.

785
00:46:07,000 --> 00:46:10,000
The target speed is 50 miles an hour,

786
00:46:10,000 --> 00:46:13,000
and our tow trucker has his foot to the floor.

787
00:46:13,000 --> 00:46:14,000
35.

788
00:46:14,000 --> 00:46:16,000
It's busted.

789
00:46:16,000 --> 00:46:18,000
It's busted.

790
00:46:27,000 --> 00:46:30,000
Well, it didn't replicate, but it was still pretty cool.

791
00:46:30,000 --> 00:46:33,000
Once again, the myth that he split didn't.

792
00:46:33,000 --> 00:46:37,000
As per the myth, contact was just to the port side.

793
00:46:37,000 --> 00:46:42,000
But despite the increased speed, the result was still only a glancing blow.

794
00:46:42,000 --> 00:46:45,000
The way these are made is very, very strong.

795
00:46:45,000 --> 00:46:46,000
It's beautiful.

796
00:46:46,000 --> 00:46:50,000
It's not likely that something is going to split down the middle.

797
00:46:50,000 --> 00:46:55,000
Yeah, you'd have to get a really good shot at a high velocity.

798
00:46:55,000 --> 00:47:00,000
And whoever split that boat must have been going a lot faster than 45 miles an hour.

799
00:47:00,000 --> 00:47:01,000
Yeah, that's the truth.

800
00:47:01,000 --> 00:47:03,000
I'm passing more like 80 or 90.

801
00:47:03,000 --> 00:47:06,000
With the trailer gone, but the boat's still intact,

802
00:47:06,000 --> 00:47:09,000
the team have to get creative to get satisfaction.

803
00:47:09,000 --> 00:47:11,000
I need more carnage.

804
00:47:11,000 --> 00:47:15,000
We still have the crane, so what we're going to do is we're going to take the boat up about 100 feet

805
00:47:15,000 --> 00:47:17,000
and drop it on the ground.

806
00:47:17,000 --> 00:47:19,000
Then I'll be satisfied.

807
00:47:21,000 --> 00:47:23,000
Go, go, go, go, go, go, go, go!

808
00:47:32,000 --> 00:47:36,000
I'm thinking that went down like a lead balloon with a crane driver.

809
00:47:36,000 --> 00:47:38,000
We are in so much trouble.

810
00:47:38,000 --> 00:47:39,000
Not yet.

811
00:47:39,000 --> 00:47:40,000
We're kind of in trouble.

812
00:47:40,000 --> 00:47:41,000
A little trouble.

813
00:47:41,000 --> 00:47:44,000
Yep, I wouldn't want to be the one to tell Jamie.

814
00:47:44,000 --> 00:47:46,000
Whoa!

815
00:47:46,000 --> 00:47:48,000
Oh!

816
00:47:48,000 --> 00:47:50,000
Dang!

817
00:47:50,000 --> 00:47:51,000
Okay.

818
00:47:51,000 --> 00:47:55,000
Well, as Adam would say, there's your problem.

819
00:47:55,000 --> 00:47:58,000
Do we get insurance on this truck?

820
00:47:58,000 --> 00:48:00,000
Anyone?

821
00:48:00,000 --> 00:48:01,000
No!

822
00:48:01,000 --> 00:48:06,000
I know we didn't get bifurcation, but crashing that boat into the channel marker, that was cool.

823
00:48:06,000 --> 00:48:07,000
I mean, we have a picture.

824
00:48:07,000 --> 00:48:11,000
We have a police report and we know this kind of damage is possible.

825
00:48:11,000 --> 00:48:15,000
Even at 45 miles per hour, we couldn't get that kind of damage.

826
00:48:15,000 --> 00:48:17,000
So unlike the boat, this one's busted?

827
00:48:17,000 --> 00:48:18,000
Busted.

828
00:48:18,000 --> 00:48:19,000
Busted.

829
00:48:19,000 --> 00:48:39,000
Mythbusters books and DVDs are available at Dimix and DVDs at JB Hi-Fi.

830
00:48:49,000 --> 00:48:59,000
Thanks for watching.