1 00:00:00,000 --> 00:00:06,840 MUSIC 2 00:00:06,840 --> 00:00:11,840 Coming up, Mythbusters Revisited. 3 00:00:11,840 --> 00:00:14,340 We answer our critics and do it again. 4 00:00:14,340 --> 00:00:17,840 It's a wild ride as the Mythbusters jump headlong 5 00:00:17,840 --> 00:00:21,840 into challenging their detractors. 6 00:00:21,840 --> 00:00:25,840 Does anyone else have any suggestions? 7 00:00:26,680 --> 00:00:29,680 Was plywood builder a balsa? 8 00:00:29,680 --> 00:00:32,680 Did exploding gas tank drive you nuts? 9 00:00:32,680 --> 00:00:36,680 How about exploding cola? 10 00:00:36,680 --> 00:00:39,680 Air conditioning or even walking in the rain? 11 00:00:39,680 --> 00:00:43,680 And did blown away fall flat? 12 00:00:43,680 --> 00:00:45,680 If you were one of the critics, 13 00:00:45,680 --> 00:00:48,680 the Mythbusters are going to take you on. 14 00:00:48,680 --> 00:00:51,680 Payback time and payback some... 15 00:00:51,680 --> 00:00:54,680 Who are the Mythbusters? 16 00:00:55,520 --> 00:00:58,520 Adam Savage. 17 00:00:58,520 --> 00:01:01,520 And Jamie Heinemann. 18 00:01:01,520 --> 00:01:06,520 Between them more than 30 years special effects experience. 19 00:01:06,520 --> 00:01:11,520 They don't just tell the Myths, 20 00:01:11,520 --> 00:01:15,520 they put them to the test. 21 00:01:15,520 --> 00:01:20,520 MUSIC 22 00:01:21,360 --> 00:01:25,360 MUSIC 23 00:01:25,360 --> 00:01:28,360 You know, one of the things that I appreciate most about this show 24 00:01:28,360 --> 00:01:31,360 that's different than a lot of other shows on television is that 25 00:01:31,360 --> 00:01:34,360 we're willing to go back to something we've done 26 00:01:34,360 --> 00:01:36,360 and say we screwed it up. 27 00:01:36,360 --> 00:01:38,360 You bet. 28 00:01:38,360 --> 00:01:41,360 The revisit episodes are among my favorite ones ever. 29 00:01:41,360 --> 00:01:44,360 So what's up next? 30 00:01:44,360 --> 00:01:47,360 The first one is blown away. 31 00:01:47,360 --> 00:01:51,360 Does being shot really throw you back through the air? 32 00:01:51,360 --> 00:01:54,360 Not according to the Mythbusters, 33 00:01:54,360 --> 00:01:57,360 but some viewers disagreed. 34 00:01:57,360 --> 00:02:01,360 The first time round, because both the pig and buster were hung from a hook, 35 00:02:01,360 --> 00:02:04,360 their center of gravity was not like a human. 36 00:02:04,360 --> 00:02:08,360 They should have been supported around their chest. 37 00:02:08,360 --> 00:02:12,360 Even though the Mythbusters showed how to do the blown away effect, 38 00:02:12,360 --> 00:02:15,360 some fans were unconvinced. 39 00:02:16,360 --> 00:02:19,360 So how are we going to set this one right? 40 00:02:19,360 --> 00:02:23,360 Well, we need to come up with a different rig that will support the body 41 00:02:23,360 --> 00:02:26,360 more on its center of gravity. 42 00:02:26,360 --> 00:02:30,360 So I think we should get Tori to arrange that, and it shouldn't be that hard. 43 00:02:30,360 --> 00:02:35,360 I think we should also go to the new biggest gun we've found we have access to, 44 00:02:35,360 --> 00:02:38,360 and this time shoot them with a .50 caliber. 45 00:02:38,360 --> 00:02:41,360 Yeah, if that won't do it, then nothing's gonna... 46 00:02:41,360 --> 00:02:43,360 Well, an RPG would. 47 00:02:43,360 --> 00:02:47,360 But this myth is about more conventional shootings. 48 00:02:47,360 --> 00:02:52,360 First, the build team has got to make a center of gravity rig for buster. 49 00:02:52,360 --> 00:02:54,360 They're all skin and bones. 50 00:02:54,360 --> 00:02:57,360 Tori and Grant are going to recycle the previous rig, 51 00:02:57,360 --> 00:03:00,360 but support buster in a different way. 52 00:03:00,360 --> 00:03:08,360 I'm gonna extend a bar from his chest out to the original pig rig, 53 00:03:08,360 --> 00:03:12,360 and that any amount of pressure would knock him back. 54 00:03:12,360 --> 00:03:17,360 Buster will now be supported at his chest, exactly where he'll get shot. 55 00:03:17,360 --> 00:03:22,360 This means all the bullets' energy will be transferred into blowing him away. 56 00:03:23,360 --> 00:03:27,360 Okay, now the question is how much force is going to take to get him off of there? 57 00:03:27,360 --> 00:03:31,360 The team need to prove that only a minimal force will knock him off, 58 00:03:31,360 --> 00:03:34,360 because if a tiny force can make him fall down, 59 00:03:34,360 --> 00:03:38,360 then a powerful bullet should send him flying back. 60 00:03:38,360 --> 00:03:40,360 You're gonna throw him over with a glove. 61 00:03:40,360 --> 00:03:43,360 Okay, try not to hurt him. 62 00:03:43,360 --> 00:03:47,360 That was rad. Maybe you should use both gloves. 63 00:03:47,360 --> 00:03:50,360 If the glove fits, throw it. 64 00:03:52,360 --> 00:03:53,360 Okay, wow. 65 00:03:53,360 --> 00:03:57,360 He needs something a little heavier, like a bolt from the blue. 66 00:03:59,360 --> 00:04:02,360 Cross the shot. That's what happens when you go... 67 00:04:02,360 --> 00:04:04,360 Good shot. 68 00:04:04,360 --> 00:04:08,360 The gloves are off, so Tori opts for a baseball instead. 69 00:04:11,360 --> 00:04:13,360 Ah! That's it. 70 00:04:13,360 --> 00:04:16,360 It's strike three for Buster. 71 00:04:16,360 --> 00:04:18,360 I just tested the rig. 72 00:04:18,360 --> 00:04:20,360 If I was able to knock the dummy off with a baseball, 73 00:04:20,360 --> 00:04:23,360 a bullet is gonna have that much more force. 74 00:04:23,360 --> 00:04:27,360 It should be able to knock it off, and then we'll be able to see if it knocks it six feet back. 75 00:04:28,360 --> 00:04:32,360 Now, Buster's got a date on the range, and he needs to look his best. 76 00:04:32,360 --> 00:04:35,360 So, Tori makes him a new head. 77 00:04:36,360 --> 00:04:39,360 While Kari carves out a bullet-proof plate, 78 00:04:39,360 --> 00:04:44,360 the impenetrable steel will ensure that the bullet's full kinetic energy 79 00:04:44,360 --> 00:04:48,360 will be transferred to Buster, and maybe knock him back. 80 00:04:49,360 --> 00:04:54,360 If we manage to capture all of the bullet's energy on this plate, 81 00:04:54,360 --> 00:04:56,360 and Buster still doesn't get blown back, 82 00:04:56,360 --> 00:05:01,360 I think that we can positively say that this myth is completely and totally busted. 83 00:05:02,360 --> 00:05:05,360 And at the Alameda County firing range, 84 00:05:05,360 --> 00:05:08,360 it's time to put that to the test once and for all. 85 00:05:09,360 --> 00:05:12,360 Buster gets ready to stare down the barrel. 86 00:05:12,360 --> 00:05:16,360 Just like last time, he'll be shot from 22 feet. 87 00:05:16,360 --> 00:05:20,360 That's the average distance for a fatal shooting. 88 00:05:22,360 --> 00:05:26,360 With Buster on the frame, it's time for a quick demonstration. 89 00:05:26,360 --> 00:05:29,360 Just go ahead and try to hit the dummy with the bar. 90 00:05:30,360 --> 00:05:32,360 That was the slow ball. 91 00:05:32,360 --> 00:05:34,360 Alright, why don't you try? 92 00:05:36,360 --> 00:05:38,360 It was the beleti fast ball. 93 00:05:40,360 --> 00:05:41,360 Strike one. 94 00:05:42,360 --> 00:05:44,360 It looked to me like that, just knocked him straight down. 95 00:05:44,360 --> 00:05:47,360 He actually levered against his neck, and he went, kind of dropped. 96 00:05:47,360 --> 00:05:50,360 That's perfect. I mean, that's what this whole rig is designed to do. 97 00:05:50,360 --> 00:05:53,360 But Buster's not happy. 98 00:05:53,360 --> 00:05:55,360 You guys have f*****g me long enough. 99 00:05:55,360 --> 00:05:57,360 Buster's on a rampage. 100 00:05:57,360 --> 00:05:59,360 It's payback time. 101 00:05:59,360 --> 00:06:01,360 It's payback time and paybacks of... 102 00:06:02,360 --> 00:06:04,360 Forget Hannibal Lecter. 103 00:06:04,360 --> 00:06:08,360 An angry Buster is what nightmares are made of. 104 00:06:08,360 --> 00:06:11,360 You know, what's funny is that when you put this on, you can smell. 105 00:06:11,360 --> 00:06:14,360 And you get all these sense memories of blowing them up 106 00:06:14,360 --> 00:06:18,360 and dropping them off a cliff and there's a little salt water, a little rotting pig. 107 00:06:18,360 --> 00:06:21,360 It's like a trip down memory lane. You want to try? 108 00:06:21,360 --> 00:06:22,360 No, thanks. 109 00:06:23,360 --> 00:06:29,360 Before Buster faces the firing squad, he first needs his bulletproof vest. 110 00:06:30,360 --> 00:06:33,360 He's ready to take one for the team. 111 00:06:33,360 --> 00:06:35,360 And first up, it's the shotgun. 112 00:06:36,360 --> 00:06:38,360 Okay, 12 gauge, gear slug. 113 00:06:38,360 --> 00:06:40,360 At 20 feet. 114 00:06:40,360 --> 00:06:43,360 And three, two, one. 115 00:06:46,360 --> 00:06:48,360 It's head K-1. 116 00:06:48,360 --> 00:06:53,360 Well, he'd certainly be dead, but a Hollywood special this wasn't. 117 00:06:53,360 --> 00:06:55,360 He didn't fly back six feet. 118 00:06:55,360 --> 00:06:57,360 No, he just crumpled. 119 00:06:57,360 --> 00:06:58,360 He just fell right where he was. 120 00:06:58,360 --> 00:07:00,360 I mean, his feet are still exactly where they were. 121 00:07:00,360 --> 00:07:03,360 Except one leg is broken. 122 00:07:04,360 --> 00:07:08,360 Broken leg is the least of his worries, as the high speed shows. 123 00:07:08,360 --> 00:07:10,360 You see the bullet hitting. 124 00:07:10,360 --> 00:07:13,360 I can see him sliding off the rig and he's moving backwards maybe an inch. 125 00:07:13,360 --> 00:07:17,360 This is exactly what we saw the last time we did this test. 126 00:07:17,360 --> 00:07:18,360 That just got shot. 127 00:07:18,360 --> 00:07:22,360 This is the gear slug with the rig in the center of his gravity, 128 00:07:22,360 --> 00:07:25,360 just as we've been asked to do. Busted. 129 00:07:25,360 --> 00:07:27,360 Let's move to the 50 cal. 130 00:07:27,360 --> 00:07:33,360 But before the dreaded 50 caliber, the myth musters have a rather rainy revisit. 131 00:07:41,360 --> 00:07:43,360 So running in the rain. 132 00:07:43,360 --> 00:07:45,360 What could they say we got wrong on that one? 133 00:07:45,360 --> 00:07:49,360 The problem apparently is that we didn't use real rain. 134 00:07:50,360 --> 00:07:53,360 When Adam and Jamie first got soaked for science, 135 00:07:53,360 --> 00:07:58,360 they used artificial rain. 136 00:07:58,360 --> 00:08:01,360 And their results were surprising. 137 00:08:01,360 --> 00:08:05,360 Over a set distance, you get wetter in the rain if you run. 138 00:08:05,360 --> 00:08:07,360 But viewers weren't happy. 139 00:08:07,360 --> 00:08:10,360 The rain was all wrong. 140 00:08:11,360 --> 00:08:14,360 I guess we could answer this by waiting for a rainstorm 141 00:08:14,360 --> 00:08:17,360 and doing the test again, maybe even doubling the length 142 00:08:17,360 --> 00:08:21,360 of the walking and running course and run three times and walk three times 143 00:08:21,360 --> 00:08:23,360 and see what the data says. 144 00:08:24,360 --> 00:08:28,360 First things first, it's those fetish fantasies. 145 00:08:28,360 --> 00:08:31,360 Time for the boys to rubber up. 146 00:08:31,360 --> 00:08:33,360 Jamie feels really sexy. 147 00:08:33,360 --> 00:08:35,360 He wears it all the time on the weekends. 148 00:08:35,360 --> 00:08:38,360 I've come into the shop when he doesn't know anyone's here. 149 00:08:38,360 --> 00:08:40,360 So you have prancing around. 150 00:08:40,360 --> 00:08:42,360 Amazing. 151 00:08:45,360 --> 00:08:47,360 Suit it up. 152 00:08:47,360 --> 00:08:49,360 They're ready for the rain. 153 00:08:49,360 --> 00:08:52,360 And to start, they're going to walk. 154 00:08:52,360 --> 00:08:57,360 Just like in the original test, they've weighed their overalls when dry 155 00:08:57,360 --> 00:09:00,360 and will weigh them again after their soaking saunters 156 00:09:00,360 --> 00:09:03,360 to see how much rainwater they've absorbed. 157 00:09:03,360 --> 00:09:07,360 And this time, they're also doing the same with their caps. 158 00:09:07,360 --> 00:09:10,360 It's getting kind of wet. 159 00:09:11,360 --> 00:09:15,360 The rubber suits prevent their own sweat from contaminating the results. 160 00:09:18,360 --> 00:09:20,360 Whenever you take it off, you have to stick it right in. 161 00:09:20,360 --> 00:09:23,360 Adam's sudden suit gained 20 grams. 162 00:09:25,360 --> 00:09:28,360 Next up, it's convict lookalike Jamie. 163 00:09:34,360 --> 00:09:39,360 To silence the critics, the mythbusters keep walking the walk. 164 00:09:43,360 --> 00:09:45,360 It's all going swimmingly. 165 00:09:45,360 --> 00:09:50,360 But just when they're about to run, disaster strikes. 166 00:09:51,360 --> 00:09:57,360 The rain stops and the sun comes out to spoil this myth, at least for now. 167 00:09:58,360 --> 00:10:05,360 The whimsical weather has scoffered the mythbusters run versus walk revisit. 168 00:10:05,360 --> 00:10:07,360 Well, that didn't work at all. 169 00:10:07,360 --> 00:10:10,360 San Francisco's weather patterns are just a little too fickle. 170 00:10:10,360 --> 00:10:13,360 Which is why we went with manufactured rain in the first place. 171 00:10:13,360 --> 00:10:15,360 Here we are now, we're out of time. 172 00:10:15,360 --> 00:10:17,360 Sounds like we need some help. 173 00:10:17,360 --> 00:10:19,360 Tory Grant, come on. 174 00:10:19,360 --> 00:10:21,360 They got to wear the gimp suit. 175 00:10:21,360 --> 00:10:23,360 Oh yeah, these things. 176 00:10:23,360 --> 00:10:25,360 Pad via superhero. 177 00:10:27,360 --> 00:10:29,360 Do you guys wash these? 178 00:10:29,360 --> 00:10:31,360 That's alright. 179 00:10:33,360 --> 00:10:39,360 So it's down to the build team to take on the challenge of concluding this soggy saga. 180 00:10:39,360 --> 00:10:43,360 Although they're not exactly thrilled at the thought. 181 00:10:43,360 --> 00:10:45,360 Why are we doing this again? 182 00:10:45,360 --> 00:10:48,360 Didn't Jamie and Adam already do this experiment? 183 00:10:48,360 --> 00:10:50,360 Yeah, but they made the rain. 184 00:10:50,360 --> 00:10:55,360 They took a warehouse and it was all man-made, so it was really, really consistent. 185 00:10:55,360 --> 00:10:59,360 We're working with some random mother nature and see if we can get a different reading. 186 00:10:59,360 --> 00:11:01,360 So why aren't they doing it? 187 00:11:01,360 --> 00:11:03,360 Because they don't want to get wet again. 188 00:11:03,360 --> 00:11:05,360 That's my point. 189 00:11:05,360 --> 00:11:07,360 37.5. 190 00:11:07,360 --> 00:11:11,360 It's a good point, but those are your orders. 191 00:11:11,360 --> 00:11:17,360 So they mark out the 100 foot course the same length as the original experiment. 192 00:11:17,360 --> 00:11:21,360 But it's hardly raining cats and dogs. 193 00:11:21,360 --> 00:11:29,360 Let's just stay on rain watch and the minute it starts getting, we'll be ready to go get all the stuff into the point where you can just jump in the gimp suits and go for it. 194 00:11:29,360 --> 00:11:31,360 To the gimp cage. 195 00:11:37,360 --> 00:11:39,360 This is such a strange feeling. 196 00:11:39,360 --> 00:11:41,360 They don the sweat barrier rubber. 197 00:11:41,360 --> 00:11:43,360 Don't say anything. 198 00:11:43,360 --> 00:11:47,360 And then their pre-weight overalls. 199 00:11:47,360 --> 00:11:51,360 This time one will run and one will walk simultaneously. 200 00:11:51,360 --> 00:11:53,360 Yeah, look at you. 201 00:11:53,360 --> 00:11:55,360 So they're exposed to the same rainfall. 202 00:11:55,360 --> 00:11:57,360 All right, you ready to go to work? 203 00:11:57,360 --> 00:11:59,360 All right, who's doing what first? 204 00:11:59,360 --> 00:12:01,360 All right, we got a chart here. 205 00:12:01,360 --> 00:12:05,360 I'm walking first and you are running. 206 00:12:05,360 --> 00:12:07,360 I am running, correct. 207 00:12:07,360 --> 00:12:09,360 And go. 208 00:12:17,360 --> 00:12:19,360 And stop. 209 00:12:19,360 --> 00:12:21,360 The suits are off and weighed. 210 00:12:21,360 --> 00:12:23,360 And the result? 211 00:12:25,360 --> 00:12:33,360 Tari's gained 10 grams in his 24 second walk and Grant's went up by 8 grams in his 10 second run. 212 00:12:33,360 --> 00:12:37,360 Okay, so test number two. 213 00:12:37,360 --> 00:12:39,360 You're running, I'm walking. 214 00:12:39,360 --> 00:12:41,360 Yeah. 215 00:12:41,360 --> 00:12:43,360 Ready? 216 00:12:43,360 --> 00:12:45,360 One, two, three, go. 217 00:12:45,360 --> 00:12:47,360 And off. 218 00:12:47,360 --> 00:12:49,360 Except it's not exactly a tropical monsoon. 219 00:12:55,360 --> 00:12:59,360 With the weigh in, Tari's in for a surprise. 220 00:12:59,360 --> 00:13:03,360 It's lighter than before I went out. 221 00:13:03,360 --> 00:13:05,360 How is that possible? 222 00:13:05,360 --> 00:13:09,360 It's just not raining hard enough to overcome the margin of error. 223 00:13:09,360 --> 00:13:13,360 But then, the heavens open. 224 00:13:13,360 --> 00:13:15,360 The race is now on. 225 00:13:15,360 --> 00:13:17,360 I am walking, you're running. 226 00:13:17,360 --> 00:13:19,360 You ready? 227 00:13:19,360 --> 00:13:21,360 Ready, set, go. 228 00:13:23,360 --> 00:13:25,360 These guys are troopers. 229 00:13:25,360 --> 00:13:29,360 They're not going to let a little rain dampen their parade. 230 00:13:29,360 --> 00:13:35,360 It's a long, saturated, and sometimes miserable afternoon for Grant and Tari. 231 00:13:35,360 --> 00:13:41,360 But after four more tests, they've got enough results to satisfy their critics. 232 00:13:44,360 --> 00:13:47,360 So, how'd you guys do? Did you get a lot of runs in? 233 00:13:47,360 --> 00:13:51,360 We did six different runs, and our results actually contradicted yours. 234 00:13:51,360 --> 00:13:52,360 Really? 235 00:13:52,360 --> 00:13:55,360 Yeah, we show that the runner gets less wet than the walker. 236 00:13:55,360 --> 00:14:01,360 Yeah, in fact, on average, we found that the runner collected 4 grams less water than the walker. 237 00:14:01,360 --> 00:14:10,360 Well, you've got a larger sample size, and I guess it may be that some artifact in our artificial rain skewed the results. 238 00:14:10,360 --> 00:14:14,360 So, I'm okay with saying that this myth is actually confirmed. 239 00:14:14,360 --> 00:14:18,360 I guess it is better to run than walk in the rain. 240 00:14:18,360 --> 00:14:19,360 Good work. 241 00:14:19,360 --> 00:14:21,360 Hey, thanks. 242 00:14:35,360 --> 00:14:38,360 So, exploding cola cans. 243 00:14:38,360 --> 00:14:42,360 This is a variation on the biscuit bullet story that we did. 244 00:14:42,360 --> 00:14:44,360 Well, we already revisited that one. 245 00:14:44,360 --> 00:14:47,360 We're getting pretty postmodern now when we're revisiting a revisit. 246 00:14:47,360 --> 00:14:49,360 What did we screw up on this one? 247 00:14:49,360 --> 00:14:51,360 You mean, what did you screw up? 248 00:14:53,360 --> 00:14:58,360 The first time around, the mythbusters put dough in a hot car to watch it explode. 249 00:14:59,360 --> 00:15:02,360 Ho-ho! No! 250 00:15:02,360 --> 00:15:09,360 For the revisit, they used aerosols and cola cans, but got no pops from any soda. 251 00:15:09,360 --> 00:15:14,360 Success only came via a 300-degree oven. 252 00:15:14,360 --> 00:15:17,360 Oh, yeah! 253 00:15:18,360 --> 00:15:21,360 But Adam was just too impatient. 254 00:15:21,360 --> 00:15:24,360 He wrapped the car experiment too early. 255 00:15:25,360 --> 00:15:31,360 Cola will explode at 140 degrees, but it just takes time to get there. 256 00:15:31,360 --> 00:15:37,360 So, it is possible for a soda can to get hot enough in a car to explode. 257 00:15:37,360 --> 00:15:40,360 Miaculpa myth confirmed. 258 00:15:40,360 --> 00:15:41,360 Oh, is that it? 259 00:15:41,360 --> 00:15:42,360 Actually, no. 260 00:15:42,360 --> 00:15:46,360 We got so much response to this, one fan even wrote in and said, 261 00:15:46,360 --> 00:15:52,360 What color of car would the mythbusters recommend for them to buy to prevent this from happening? 262 00:15:52,360 --> 00:15:56,360 What will save you from those nightmare summer heat waves 263 00:15:56,360 --> 00:16:00,360 when sweat runs free like a sweeter sauna, 264 00:16:00,360 --> 00:16:05,360 and the baking tarmac turns a TV dinner into toast? 265 00:16:05,360 --> 00:16:12,360 What will relieve the endless discomfort and stop soda cans exploding? 266 00:16:12,360 --> 00:16:14,360 A white car or a black car? 267 00:16:14,360 --> 00:16:16,360 I've got two identical cars here. 268 00:16:16,360 --> 00:16:18,360 One white, one black. 269 00:16:18,360 --> 00:16:21,360 They're completely the same inside and out. 270 00:16:21,360 --> 00:16:22,360 The only difference is the color. 271 00:16:22,360 --> 00:16:25,360 We're going to leave them out in the sun all day on a beautiful sunny day 272 00:16:25,360 --> 00:16:28,360 and see which one of these heats up faster. 273 00:16:30,360 --> 00:16:32,360 Alright, the thermometers are set. 274 00:16:32,360 --> 00:16:34,360 Let's start the experiment. 275 00:16:34,360 --> 00:16:36,360 It's just gone nine o'clock. 276 00:16:36,360 --> 00:16:38,360 I'm going to check the temperatures on both the cars, 277 00:16:38,360 --> 00:16:41,360 mark them down and come back in half an hour to see if there's any change. 278 00:16:45,360 --> 00:16:47,360 This one's already 88. 279 00:16:47,360 --> 00:16:49,360 The black car's already heating up faster. 280 00:16:51,360 --> 00:16:57,360 As the sun soars in the sky, this one's going to fry all day. 281 00:17:18,360 --> 00:17:21,360 The team also add the half-inch thick steel 282 00:17:21,360 --> 00:17:27,360 so that the full force of the 50 cal is transferred to Buster's center of gravity. 283 00:17:27,360 --> 00:17:29,360 You see the 50 cal of course? 284 00:17:32,360 --> 00:17:35,360 It's like the Acme Bugs Bunny Banana Ball. 285 00:17:35,360 --> 00:17:36,360 It's huge. 286 00:17:36,360 --> 00:17:37,360 They're little missiles. 287 00:17:37,360 --> 00:17:40,360 Are we going to get a chance to shoot, I wonder? 288 00:17:40,360 --> 00:17:42,360 Actually, no. 289 00:17:42,360 --> 00:17:44,360 That honor falls to its owner, Brian. 290 00:17:44,360 --> 00:17:47,360 Even though he's yet to have a chance to shoot it. 291 00:17:47,360 --> 00:17:49,360 Why haven't you fired it yet? 292 00:17:49,360 --> 00:17:52,360 Well, it's too powerful for most of the local ranges 293 00:17:52,360 --> 00:17:56,360 and the property I have to shoot it at is a swamp for six months out of the air. 294 00:17:56,360 --> 00:17:57,360 Are you excited? 295 00:17:57,360 --> 00:17:58,360 Oh, yeah. 296 00:17:58,360 --> 00:18:00,360 It's kind of hard having this sitting at home 297 00:18:00,360 --> 00:18:03,360 and just looking at it day after day, night after night. 298 00:18:03,360 --> 00:18:05,360 Not that I really do that, but it sounds good. 299 00:18:08,360 --> 00:18:11,360 Note to self, turn down invitations to Brian's place. 300 00:18:15,360 --> 00:18:17,360 It's Buster's last stand. 301 00:18:18,360 --> 00:18:21,360 Three, two, one. 302 00:18:26,360 --> 00:18:30,360 Buster's down for the count, but he's not blown away. 303 00:18:30,360 --> 00:18:33,360 That one rattled my bones. I still feel it. 304 00:18:33,360 --> 00:18:37,360 But how much of the bullet's lethal momentum did he absorb? 305 00:18:37,360 --> 00:18:38,360 Let's see. 306 00:18:40,360 --> 00:18:43,360 The round hit Buster right at his center of gravity 307 00:18:43,360 --> 00:18:45,360 and pierced the plate. 308 00:18:45,360 --> 00:18:49,360 Look at the deformation on this. That is a lot of kinetic energy. 309 00:18:49,360 --> 00:18:51,360 But where did it end up? 310 00:18:52,360 --> 00:18:53,360 Oh my God. 311 00:18:53,360 --> 00:18:54,360 Wait. 312 00:18:54,360 --> 00:18:55,360 Lodged in his spine. 313 00:18:55,360 --> 00:18:56,360 Is that it? 314 00:18:56,360 --> 00:18:57,360 Yeah. 315 00:18:59,360 --> 00:19:04,360 Buster took the force of the 50 cal and still just slumped. 316 00:19:04,360 --> 00:19:08,360 We had 100% of the kinetic energy on Buster and he still did not fly back. 317 00:19:08,360 --> 00:19:11,360 I would say that this is busted, busted, rebusted and busted. 318 00:19:11,360 --> 00:19:13,360 Well, yeah, I'm satisfied by looking at this. 319 00:19:13,360 --> 00:19:15,360 Let's check out the high speed footage. 320 00:19:18,360 --> 00:19:21,360 He went back a full two and a half inches there. 321 00:19:21,360 --> 00:19:22,360 Yes, that. 322 00:19:22,360 --> 00:19:23,360 He's not flying back. 323 00:19:23,360 --> 00:19:24,360 No. 324 00:19:24,360 --> 00:19:25,360 No, that wasn't flying back. 325 00:19:26,360 --> 00:19:28,360 Can we put this one to bed, please? 326 00:19:28,360 --> 00:19:31,360 Does anyone else have any God's suggestions for getting this one right? 327 00:19:31,360 --> 00:19:33,360 Because I think we've got it. 328 00:19:33,360 --> 00:19:37,360 Well, you know, let's just say you don't want to get shot by a gun, you know, 329 00:19:37,360 --> 00:19:41,360 but it's not going to throw you across the room for whatever little that's worth. 330 00:19:41,360 --> 00:19:43,360 And so stop doing it in the movies. 331 00:19:43,360 --> 00:19:45,360 If it doesn't make any sense, it just looks fake. 332 00:19:45,360 --> 00:19:47,360 That's because it is. 333 00:19:47,360 --> 00:19:50,360 The fly-by-wire boys do it every time. 334 00:19:53,360 --> 00:19:59,360 But catch an older movie before this trick was invented and everyone just slumps. 335 00:19:59,360 --> 00:20:05,360 And the final nail in the coffin of this myth comes courtesy of Newton. 336 00:20:05,360 --> 00:20:10,360 His third law states that any action has an equal and opposite reaction. 337 00:20:10,360 --> 00:20:16,360 So if Buster was going to be blown away, then our sharpshooter would have to be thrown 338 00:20:16,360 --> 00:20:18,360 at equal distance backwards. 339 00:20:20,360 --> 00:20:26,360 You know, I never cease to be amazed at how riled up people get when they think we've gotten something wrong. 340 00:20:26,360 --> 00:20:32,360 And I'm glad we redid blown away, but I don't think we came up with anything too radically new with it, do you? 341 00:20:32,360 --> 00:20:36,360 No, and, you know, we, again, talked to an expert. 342 00:20:36,360 --> 00:20:44,360 We talked to a guy from the FBI that is a crime scene investigator, and he verified that this just doesn't happen. 343 00:20:44,360 --> 00:20:46,360 It's busted. It's busted again. 344 00:20:56,360 --> 00:21:03,360 The next revisit is an awesome account of amateur aviation by one hell of a lucky builder. 345 00:21:03,360 --> 00:21:12,360 When blown off the roof, he transformed a piece of plywood into a parachute and carefully touched down a few stories below. 346 00:21:12,360 --> 00:21:15,360 So plywood builder, what are the fans saying about it? 347 00:21:15,360 --> 00:21:19,360 Well, it sounds like they're saying that we didn't take into consideration updraft. 348 00:21:19,360 --> 00:21:23,360 Well, we did consider that, and we used the zipline for that. 349 00:21:23,360 --> 00:21:32,360 And it was pretty clear to me that unless you had clamps for hands, you know, that plywood was going to get ripped away with any significant wind. 350 00:21:32,360 --> 00:21:37,360 Before the zipline, Adam and Jamie first did their average Joe test. 351 00:21:37,360 --> 00:21:42,360 But Buster, armed with plywood, simply plummeted to his death. 352 00:21:47,360 --> 00:21:52,360 But when they tested the effect of wind, viewers felt the speed they reached was too slow. 353 00:21:52,360 --> 00:21:58,360 Even though at only 15 miles an hour, controlling the board was impossible. 354 00:21:58,360 --> 00:22:03,360 Oh, forget about controlling this thing. There's no control. 355 00:22:03,360 --> 00:22:10,360 I mean, I pushed my head up against it. At the peak, I could not get it. It's just like all over the place. 356 00:22:10,360 --> 00:22:11,360 So Jamie, what's the plan? 357 00:22:11,360 --> 00:22:15,360 Well, let's just keep it simple. Let's just use the back of your pickup. 358 00:22:15,360 --> 00:22:20,360 And, you know, we'll strap you in there. You'll hold on to the board and get it up to speed. 359 00:22:20,360 --> 00:22:24,360 And you want to see whether changing the angle increases the lift on the board. 360 00:22:24,360 --> 00:22:27,360 And also at what speed you can no longer hold on to the board. 361 00:22:27,360 --> 00:22:29,360 Yeah, that sounds real safe. 362 00:22:30,360 --> 00:22:36,360 They're abandoning the slow zipline test and trying to drive this myth into the ground. 363 00:22:37,360 --> 00:22:45,360 Tari's building a support system for the back of his truck, which he'll strap himself into while holding a piece of plywood above his head. 364 00:22:48,360 --> 00:22:54,360 Then Grant will put the pedal to the metal to see if Tari can get any plywood lift. 365 00:22:55,360 --> 00:22:58,360 Just hold the plywood like this. See how long I can hold on. 366 00:22:59,360 --> 00:23:03,360 All that remains is for Tari to secure it to his truck. 367 00:23:03,360 --> 00:23:10,360 It doesn't slide back from side to side. It's not sliding, but look, sliding this way. That would be a bad thing. 368 00:23:10,360 --> 00:23:15,360 That would not be so much plywood builder as the roadkill builder. 369 00:23:15,360 --> 00:23:19,360 Maybe I could just screw into the bed. It's my truck. I'm not going to do that. 370 00:23:19,360 --> 00:23:22,360 But sure enough, that's what he does. 371 00:23:22,360 --> 00:23:27,360 And for the ride of his truck, he's going to be a little bit more careful. 372 00:23:27,360 --> 00:23:30,360 And for the ride of his life, Tari heads to the airport. 373 00:23:31,360 --> 00:23:38,360 What we're looking for are two things. One, by varying the angle of attack, can he get lift? 374 00:23:38,360 --> 00:23:44,360 And two, at what speed can he no longer hold on to that sheet of plywood? 375 00:23:46,360 --> 00:23:51,360 Well, as they unload, Tari's struggling to hold on at walking pace. 376 00:23:51,360 --> 00:23:53,360 I don't know. I think this is going to hurt. 377 00:23:53,360 --> 00:23:57,360 Everything we're about to do has all the elements of disaster. 378 00:23:57,360 --> 00:24:04,360 I mean, we've got Tari, who always ends up hurting himself, and somewhat of a sketchy plan. 379 00:24:05,360 --> 00:24:10,360 But Tari seems unconcerned, even though it's his neck on the line. 380 00:24:11,360 --> 00:24:13,360 I think it's more than your neck on the line. 381 00:24:13,360 --> 00:24:18,360 Sweet. Say if they first did the party time. Who's putting it on? 382 00:24:19,360 --> 00:24:25,360 But a cup's not all he needs for this crazy stunt. 383 00:24:26,360 --> 00:24:28,360 Ready? You're going to hurt. 384 00:24:29,360 --> 00:24:31,360 Oh, dude, what are you doing? 385 00:24:35,360 --> 00:24:37,360 And I'm the mean one. 386 00:24:38,360 --> 00:24:45,360 Suit it up. Maverick Tari gets strapped in and feels the need. The need for speed. 387 00:24:45,360 --> 00:24:47,360 I'm ready. Let's go. We're going to play. 388 00:24:49,360 --> 00:24:55,360 Meanwhile, which is hotter? The white car or the black car? 389 00:24:55,360 --> 00:25:00,360 So it's 10 a.m. one hour into the experiment. The white car is at 106. 390 00:25:01,360 --> 00:25:08,360 Okay, and the black car is at 115. I'm actually amazed how fast the temperature's going up in these cars. 391 00:25:09,360 --> 00:25:15,360 Already there's a 10 degree difference, but this myth has yet to get its fingers burnt. 392 00:25:19,360 --> 00:25:24,360 So what's next? 393 00:25:24,360 --> 00:25:26,360 We get to revisit explosive decompression. 394 00:25:26,360 --> 00:25:29,360 Oh, that's one of my favorites. I thought you had really good findings on that one. 395 00:25:29,360 --> 00:25:32,360 Well, we got a lot of email to the contrary. 396 00:25:33,360 --> 00:25:42,360 Adam and Jamie thought they'd proved that a gunshot will not cause a pressurized plane to explosively decompress, as Hollywood would have his believe. 397 00:25:43,360 --> 00:25:49,360 But some fans weren't happy because the mythbusters did their tests on the ground. 398 00:25:52,360 --> 00:26:04,360 They argued that in a flying plane, the results would be different and would rush over the bullet hole and exacerbate the pressure difference, which might be enough to help rip the plane apart. 399 00:26:06,360 --> 00:26:11,360 We do have a remnant from the previous experiment, and that is a door, and it even has a hole in it. 400 00:26:11,360 --> 00:26:16,360 Ah, that'd be perfect. What we could do is build a chamber around the door, stick that in the wind tunnel, and blow some air over it. 401 00:26:16,360 --> 00:26:22,360 As long as you can clearly see whether air passing over that hole creates a significant suction. 402 00:26:23,360 --> 00:26:26,360 Tari's rescued the DC-9 Souvenir door. 403 00:26:26,360 --> 00:26:29,360 Addie's building an airtight chamber around it. 404 00:26:32,360 --> 00:26:37,360 Once it's complete, they'll fill this chamber with smoke before putting it in a wind tunnel. 405 00:26:37,360 --> 00:26:45,360 Then they'll crank up the wind to mimic air moving around a plane, and watch to see if any smoke is sucked out of the bullet hole in the door. 406 00:26:49,360 --> 00:26:51,360 It's perfect. 407 00:26:52,360 --> 00:26:58,360 With the DC-9 chamber box signed, sealed, and delivered to the wind tunnel, it's time to get smoked up. 408 00:26:59,360 --> 00:27:05,360 To make this experiment much more visual, we're going to fill Tari's acrylic box with smoke bombs. 409 00:27:05,360 --> 00:27:14,360 We've got two kinds. We've got one professional smoke cookie, and we also have a little of those cheap smoke bombs that you can get in Chinatown just for a little color. 410 00:27:16,360 --> 00:27:20,360 You can always count on Tari to bring that feminine touch to the Mythbusters. 411 00:27:24,360 --> 00:27:26,360 Well ain't that pretty? 412 00:27:27,360 --> 00:27:35,360 With the fan off, no smoke escapes, because the pressure inside and outside the box is equal. 413 00:27:36,360 --> 00:27:38,360 So what happens with the fan on? 414 00:27:39,360 --> 00:27:42,360 And look at that! It's pulling it out! 415 00:27:42,360 --> 00:27:44,360 Alright, that's cool. 416 00:27:45,360 --> 00:27:50,360 And we stop it, and the smoke stops coming out. 417 00:27:50,360 --> 00:27:52,360 So that's cool. Alright, so it's working. 418 00:27:53,360 --> 00:27:58,360 Sure enough, the wind draws the smoke out of the box. But why? 419 00:27:59,360 --> 00:28:06,360 Once we turn this fan on, air is rushing past the top of the box, right where the hole is, creating a low pressure zone. 420 00:28:06,360 --> 00:28:16,360 And since air is always going to flow from high pressure to low pressure, the smoke and air inside the box is flowing out of the box as the air rushes over it. 421 00:28:17,360 --> 00:28:23,360 But because the escaping smoke is such a pathetic trickle, the team decide to see what the airspeed is. 422 00:28:26,360 --> 00:28:29,360 Okay, we've got 4.6 miles per hour. 423 00:28:30,360 --> 00:28:31,360 It's not very fast. 424 00:28:31,360 --> 00:28:35,360 It's not very fast. The DC9, what does it have? 561 miles per hour? 425 00:28:35,360 --> 00:28:37,360 We're going to need to go a lot faster. 426 00:28:37,360 --> 00:28:39,360 I think we need some faster winds. 427 00:28:40,360 --> 00:28:42,360 TORRY 428 00:28:43,360 --> 00:28:50,360 Torry is about to see if he can soar like the plywood builder, but the Omen's are not looking good. 429 00:28:52,360 --> 00:28:57,360 Torry, you can't see it right now, but there are 3 vultures right on the runway. 430 00:28:57,360 --> 00:29:02,360 Torry's ready to find the angle of lift and maybe fly with the vultures. 431 00:29:03,360 --> 00:29:07,360 In 3, 2, 1, go! 432 00:29:10,360 --> 00:29:13,360 15, 20! 433 00:29:13,360 --> 00:29:18,360 To get lift, Torry's got to get the board above his head and angle it into the onrushing air. 434 00:29:18,360 --> 00:29:20,360 35! 435 00:29:20,360 --> 00:29:23,360 Which is being measured by this anemometer. 436 00:29:26,360 --> 00:29:30,360 But already the speed is so fast, he just can't get it up. 437 00:29:30,360 --> 00:29:32,360 There he goes, and it's off! 438 00:29:32,360 --> 00:29:36,360 45 miles an hour, he cannot hold on any longer. 439 00:29:37,360 --> 00:29:42,360 At 45 miles an hour, Torry got about as much lift as a lead balloon. 440 00:29:42,360 --> 00:29:47,360 But as they retrieved the bruised board, he's had an idea that may just help. 441 00:29:47,360 --> 00:29:49,360 Torry, what do you want to do this time? 442 00:29:49,360 --> 00:29:53,360 What I'm thinking is maybe I'll start off with the plywood above my head like this, 443 00:29:53,360 --> 00:29:58,360 and as you guys are picking up speed, I'll lower it down into the wind and see if I get any lift. 444 00:29:59,360 --> 00:30:05,360 Okay, this is test number 2 with plywood, starting in the horizontal position this time. 445 00:30:06,360 --> 00:30:08,360 Go! 446 00:30:10,360 --> 00:30:13,360 10, 15, 20! 447 00:30:13,360 --> 00:30:15,360 He dropped it at 15! 448 00:30:15,360 --> 00:30:19,360 Well, if Torry was the original plywood builder, he'd now be dead. 449 00:30:19,360 --> 00:30:21,360 Whoa, what happened? 450 00:30:21,360 --> 00:30:27,360 Well, as soon as, like I had it up here like this, as soon as it started lowering, 451 00:30:27,360 --> 00:30:31,360 gravity took over and it just like, it came down and like, chopped me. 452 00:30:32,360 --> 00:30:37,360 Torry gets further padding and is ready to shoot the breeze again. 453 00:30:37,360 --> 00:30:38,360 You ready? 454 00:30:38,360 --> 00:30:39,360 Ready! 455 00:30:40,360 --> 00:30:42,360 And Torry's motivation? 456 00:30:42,360 --> 00:30:45,360 Letting go of the board means death. 457 00:30:49,360 --> 00:30:51,360 10, 15! 458 00:30:51,360 --> 00:30:53,360 And it's gone. 459 00:30:53,360 --> 00:30:55,360 It's looking like this myth is busted. 460 00:30:55,360 --> 00:30:56,360 Again. 461 00:30:56,360 --> 00:31:01,360 Torry can't hold on, let alone get any lift at just 15 miles an hour, 462 00:31:01,360 --> 00:31:05,360 but gusts around buildings get way higher than that. 463 00:31:06,360 --> 00:31:11,360 The American Society of Civil Engineers reports that updrafts around tall buildings in U.S. cities 464 00:31:11,360 --> 00:31:13,360 can reach up to 90 miles per hour. 465 00:31:14,360 --> 00:31:16,360 May not ever look like it from down below, 466 00:31:16,360 --> 00:31:23,360 but towering skyscrapers can funnel a gentle wind at street level into a fierce gale at the top. 467 00:31:24,360 --> 00:31:28,360 90 miles per hour seems like a lot of speed 468 00:31:28,360 --> 00:31:31,360 and that would definitely give a lot of lift on a piece of plywood, 469 00:31:31,360 --> 00:31:36,360 but you have to figure the faster it's going, the harder it is to control. 470 00:31:36,360 --> 00:31:41,360 And so far, Torry can't even control it at 15 miles per hour. 471 00:31:41,360 --> 00:31:43,360 They need a new plan. 472 00:31:43,360 --> 00:31:55,360 Well, Jamie, another classic that the fans said we completely screwed up 473 00:31:55,360 --> 00:31:59,360 was when we tested the myth that it's more fuel efficient to drive with your windows down 474 00:31:59,360 --> 00:32:01,360 than with your air conditioning on full blast. 475 00:32:02,360 --> 00:32:07,360 At 55 miles an hour, the gas computer showed that AC on was more efficient. 476 00:32:08,360 --> 00:32:13,360 But in the identical car test, at 45 miles an hour, 477 00:32:13,360 --> 00:32:20,360 open windows won hands down and the mythbusters screwed up by deciding this was the accurate result. 478 00:32:21,360 --> 00:32:24,360 I'm totally surprised and I hope we've answered it once and for all. 479 00:32:25,360 --> 00:32:28,360 But it turns out both results were right. 480 00:32:28,360 --> 00:32:35,360 As you go faster, open window drag increases until you reach a speed where AC is more efficient. 481 00:32:38,360 --> 00:32:45,360 And it turns out that that crossover point is just right between our two tests at 50 miles per hour. 482 00:32:45,360 --> 00:32:50,360 So above that point, it's better to close the windows, use the AC, 483 00:32:50,360 --> 00:32:53,360 and below that point, roll your windows down, turn the AC off. 484 00:32:53,360 --> 00:32:54,360 Exactly. 485 00:33:01,360 --> 00:33:03,360 At the automobile 11. 486 00:33:03,360 --> 00:33:07,360 All right, it's one o'clock. We're four hours into the experiment. 487 00:33:07,360 --> 00:33:09,360 It's still hot as hell. What do they read? 488 00:33:09,360 --> 00:33:14,360 126 on the white car, 135 on the black. 489 00:33:15,360 --> 00:33:23,360 The black car is a whopping 135 degrees, while the white seems to have peaked almost 10 degrees lower. 490 00:33:23,360 --> 00:33:28,360 As the baking continues, Tari's got a date with a flying builder. 491 00:33:29,360 --> 00:33:36,360 The plywood builder revisit is driving Tari crazy, but luckily, Kari's had a brainwave. 492 00:33:36,360 --> 00:33:40,360 The whole problem is I'm fighting gravity the whole time. 493 00:33:40,360 --> 00:33:48,360 I think that's actually the one thing that our viewers will still contest is the fact that it's hard to hold a plywood 4x8 above your head anyway. 494 00:33:48,360 --> 00:33:52,360 So I'm thinking it would be a good idea if we could take out that variable, 495 00:33:52,360 --> 00:33:55,360 maybe make a brace on the back that you can just kind of let it rest on. 496 00:33:55,360 --> 00:33:59,360 So the only thing that you're going to be fighting is just the wind. 497 00:33:59,360 --> 00:34:02,360 By making a support, the team will eliminate gravity. 498 00:34:02,360 --> 00:34:05,360 Now, Tari won't have to hold the board. 499 00:34:05,360 --> 00:34:09,360 Instead, he'll hang underneath as he waits to get lifted up. 500 00:34:09,360 --> 00:34:11,360 This is perfect. Go! 501 00:34:14,360 --> 00:34:17,360 10, safety, 20. 502 00:34:17,360 --> 00:34:19,360 Tari's dangling beneath the board. 503 00:34:19,360 --> 00:34:23,360 And then he's lifted, but why? 504 00:34:23,360 --> 00:34:27,360 Then he's lifted, but once more, he can't hold on. 505 00:34:27,360 --> 00:34:30,360 30, go! It's done! It's done! It's done! It's done! 506 00:34:30,360 --> 00:34:32,360 That was crazy! 507 00:34:32,360 --> 00:34:35,360 Yeah! 508 00:34:35,360 --> 00:34:38,360 You got up to 39.6 miles an hour. 509 00:34:38,360 --> 00:34:41,360 After 30 miles, you just flew. 510 00:34:41,360 --> 00:34:45,360 I think that was a very accurate test, because I mean, I had all my weight. 511 00:34:45,360 --> 00:34:49,360 I was hanging on it. It actually lifted me up, but then it ripped out of my hands. 512 00:34:49,360 --> 00:34:50,360 So you lifted, but you couldn't hold on. 513 00:34:50,360 --> 00:34:51,360 I couldn't hold on? 514 00:34:51,360 --> 00:34:53,360 I think we have plywood builder down. 515 00:34:53,360 --> 00:34:55,360 I think this is beyond criticism at this point. 516 00:34:55,360 --> 00:34:58,360 We've taken out the gravity factor. 517 00:34:58,360 --> 00:35:00,360 All we're dealing with is wind, and you couldn't hold on. 518 00:35:00,360 --> 00:35:03,360 I feel like we've actually proven something here. 519 00:35:03,360 --> 00:35:04,360 So how did it go? 520 00:35:04,360 --> 00:35:06,360 It actually went really well. 521 00:35:06,360 --> 00:35:09,360 We showed that with the right angle with the plywood, you could get lifted. 522 00:35:09,360 --> 00:35:12,360 And I did actually get lifted. I just couldn't hold on to the plywood. 523 00:35:12,360 --> 00:35:15,360 That's pretty much what we determined the first time we did this test. 524 00:35:15,360 --> 00:35:19,360 We know there's going to be high speed winds at the top of reasonably tall buildings. 525 00:35:19,360 --> 00:35:22,360 We know that they're going to give some lift to the plywood, 526 00:35:22,360 --> 00:35:25,360 and a lot of the fans were right about that aspect of it. 527 00:35:25,360 --> 00:35:28,360 But really it all comes down to whether or not you can control this plywood 528 00:35:28,360 --> 00:35:31,360 and direct your flight, which you can't. 529 00:35:31,360 --> 00:35:33,360 So this one's busted again, right? 530 00:35:33,360 --> 00:35:34,360 Busted again. 531 00:35:34,360 --> 00:35:35,360 Totally busted. 532 00:35:35,360 --> 00:35:36,360 Good work. 533 00:35:36,360 --> 00:35:37,360 Thank you. 534 00:35:44,360 --> 00:35:47,360 Back at the explosive decompression revisit, 535 00:35:47,360 --> 00:35:50,360 the build team have had the wind sucked out of them. 536 00:35:51,360 --> 00:35:53,360 So how to go with the suction? 537 00:35:53,360 --> 00:35:56,360 We got a little bit of a trickle, but I mean, it wasn't a lot of suction at all. 538 00:35:56,360 --> 00:35:58,360 What was the wind speed? 539 00:35:58,360 --> 00:36:00,360 4.6 miles an hour. 540 00:36:00,360 --> 00:36:02,360 Well, there's your problem. 541 00:36:02,360 --> 00:36:06,360 Well, it sounds to me like you need to get it going as fast as you can in the shop 542 00:36:06,360 --> 00:36:10,360 with what we have around here, and try to get at least three data points. 543 00:36:10,360 --> 00:36:15,360 So we can see if there is any correlation between outside wind speed and suction. 544 00:36:16,360 --> 00:36:20,360 Will air speeding over the bullet hole increase the pressure difference 545 00:36:20,360 --> 00:36:22,360 to cause explosive decompression? 546 00:36:22,360 --> 00:36:24,360 Time to collect some data. 547 00:36:26,360 --> 00:36:32,360 For data point one, Grant adds some streamlined acrylic to get the max speed from their fan. 548 00:36:34,360 --> 00:36:40,360 Meanwhile, Carrie's made a barometer to tell the pressure difference the wind is causing. 549 00:36:40,360 --> 00:36:49,360 Each inch that the water moves represents a 0.03613 difference in PSI. 550 00:36:50,360 --> 00:36:56,360 The fans on, and thanks to Grant's efforts, the wind speed is five times faster. 551 00:36:56,360 --> 00:36:59,360 Wind speed 19.1. 552 00:36:59,360 --> 00:37:01,360 Are you seeing any change? 553 00:37:01,360 --> 00:37:06,360 It's a tiny, tiny little change on market. 554 00:37:07,360 --> 00:37:12,360 So the difference in pressure is 0.002 PSI. 555 00:37:12,360 --> 00:37:14,360 That's not very much. 556 00:37:14,360 --> 00:37:17,360 No, I think Adam's had more explosive farts than that. 557 00:37:17,360 --> 00:37:25,360 They need faster wind again, so they resurrect a precious blast from the past, Adam and Jamie's Jetpack. 558 00:37:26,360 --> 00:37:35,360 If there is one scratch, one out of place bolt on this Jetpack, Jamie and Adam will lock us in a closet for the rest of the season. 559 00:37:35,360 --> 00:37:37,360 Here we go. Ready? Coming down. 560 00:37:38,360 --> 00:37:42,360 It's the moment of truth. One scratch, and they're off the team. 561 00:37:46,360 --> 00:37:49,360 The eagle has landed. 562 00:37:49,360 --> 00:37:51,360 And she landed. 563 00:37:53,360 --> 00:38:02,360 With the Jetpack ready to blast the wind tunnel, the team attach a zinc fuselage extension to make the air flow more like that of a flying plane. 564 00:38:03,360 --> 00:38:07,360 In three, two, one. 565 00:38:12,360 --> 00:38:15,360 In three, two, one. 566 00:38:17,360 --> 00:38:21,360 The Jetpack was never famous for being the most reliable machine. 567 00:38:24,360 --> 00:38:26,360 Hate gasoline engines. 568 00:38:27,360 --> 00:38:30,360 Maybe priming the carburetors will help. 569 00:38:31,360 --> 00:38:35,360 If it doesn't work now, Jamie will be far from happy. 570 00:38:36,360 --> 00:38:40,360 Ready? In three, two, one. 571 00:38:44,360 --> 00:38:46,360 She's away. 572 00:38:48,360 --> 00:38:50,360 But she's disappointingly weak. 573 00:38:51,360 --> 00:38:56,360 Even at full throttle, the wind speed over the bullet hole only reaches 38 miles an hour. 574 00:38:57,360 --> 00:39:05,360 And the barometer, it moves half an inch. That's a Feeble 0.02 psi. Hardly ear-popping stuff. 575 00:39:06,360 --> 00:39:11,360 It's not even close to the cruising 561 miles that we need to get to. 576 00:39:11,360 --> 00:39:15,360 I mean, we could probably get faster speeds if we strap this into somebody's truck. 577 00:39:18,360 --> 00:39:20,360 No sooner said than done. 578 00:39:21,360 --> 00:39:27,360 For data 0.3, after Tori's attached the rig to his truck, he'll hit the freeway fast. 579 00:39:27,360 --> 00:39:30,360 But, of course, he'll keep it legal. 580 00:39:31,360 --> 00:39:37,360 I don't think we're going to be able to drive, you know, like the 90 or 100 miles an hour that I wanted to, 581 00:39:37,360 --> 00:39:39,360 because it's not legal. 582 00:39:39,360 --> 00:39:45,360 But, you know, we'll be able to get it up there, maybe 65, maybe a go a little bit over 65. 583 00:39:46,360 --> 00:39:48,360 The team hit the road. 584 00:39:48,360 --> 00:39:52,360 As they look for a section of flat, empty freeway where they can do their test, 585 00:39:52,360 --> 00:39:55,360 Carrie's getting road rage. 586 00:39:55,360 --> 00:39:59,360 Ooh, don't you know we're doing important scientific work here? 587 00:40:00,360 --> 00:40:04,360 Her backseat driving does the trick, and Tori opens up the gas. 588 00:40:05,360 --> 00:40:07,360 Okay, I'm going up to 65. Here we go. 589 00:40:08,360 --> 00:40:12,360 Airflow reading 65, scooping in to 70. 590 00:40:12,360 --> 00:40:17,360 And the barometer is reading an inch, two, an inch and a half. 591 00:40:17,360 --> 00:40:23,360 Their third piece of data, 1.5 inches, 0.05 psi. 592 00:40:24,360 --> 00:40:27,360 We go up to 85. Let's do 85. 593 00:40:27,360 --> 00:40:28,360 Yeah! 594 00:40:28,360 --> 00:40:32,360 Time to call it a day before Tori does anything he might regret. 595 00:40:33,360 --> 00:40:34,360 So what'd you get? 596 00:40:34,360 --> 00:40:40,360 We did manage to get three data points, and they do show a correlation between wind speed and suction at the hole. 597 00:40:40,360 --> 00:40:45,360 Basically, because the wind increases, so does the suction, but the suction is still really tiny. 598 00:40:45,360 --> 00:40:54,360 I've done the math on this, and a bullet-sized hole at altitude traveling at 500 miles per hour would only generate about 1.4 psi. 599 00:40:54,360 --> 00:40:57,360 If you add that onto the pressure differential that you and Adam already tested... 600 00:40:57,360 --> 00:40:59,360 Which was about 8.5 psi. 601 00:40:59,360 --> 00:41:03,360 Even that still wouldn't be enough to cause explosive decompression. 602 00:41:03,360 --> 00:41:04,360 That means it's busted. 603 00:41:04,360 --> 00:41:05,360 Again. 604 00:41:05,360 --> 00:41:06,360 Again. 605 00:41:11,360 --> 00:41:18,360 In the car park cook-off, there's been a devastating technical fault. 606 00:41:19,360 --> 00:41:22,360 Carrie, what's wrong with that clock? It's not moving. 607 00:41:22,360 --> 00:41:24,360 I think the sun fried it. 608 00:41:24,360 --> 00:41:27,360 It's so hot, it melted the clock. 609 00:41:27,360 --> 00:41:30,360 Luckily, they've got an emergency replacement. 610 00:41:32,360 --> 00:41:34,360 What did the temperatures say? 611 00:41:34,360 --> 00:41:37,360 White car maintaining at 126. 612 00:41:37,360 --> 00:41:40,360 Black car 131. 613 00:41:40,360 --> 00:41:48,360 And as the sun crawls across the sky, the team keep toiling until the shadows start to lengthen. 614 00:41:48,360 --> 00:41:51,360 Okay, final half hour. What are the temperatures? 615 00:41:51,360 --> 00:42:00,360 Alright, Carrie. The white car is at 115 degrees, and the black car is at 120 degrees. 616 00:42:00,360 --> 00:42:05,360 The last temperatures are in. Time for some conclusions. 617 00:42:06,360 --> 00:42:11,360 We kind of figured the black car would get hotter, and it did, and it stayed hotter than the white car throughout the day. 618 00:42:11,360 --> 00:42:15,360 So, 10 degrees hotter, stays hotter longer. 619 00:42:15,360 --> 00:42:18,360 What do you buy? A white car or a black car? 620 00:42:18,360 --> 00:42:21,360 Well, if you're concerned about heat, you should buy the white car. 621 00:42:21,360 --> 00:42:24,360 Definitely. You should get a white car. 622 00:42:36,360 --> 00:42:45,360 This one's relative to a story we did earlier called Car Capers, where we were shooting a gas tank with a rifle and trying to make it explode. 623 00:42:45,360 --> 00:42:52,360 And that did not happen. However, we got grief from viewers saying, well, you should have used a tracer round that had set off the gas tank. 624 00:42:52,360 --> 00:43:00,360 That's not the myth that we were busting. The myth in Hollywood is that every bullet plus any given gas tank equals an explosion or a fire. 625 00:43:01,360 --> 00:43:05,360 Adam's Hollywood effects equation was spot on. 626 00:43:07,360 --> 00:43:16,360 But when the mythbusters tried to solve it, shooting rounds into a gas tank just turned it into Swiss cheese. 627 00:43:16,360 --> 00:43:20,360 There were no sparks, no ignition, and certainly no explosion. 628 00:43:22,360 --> 00:43:27,360 If there's anything we could be faulted for, it's not doing the classic mythbusters two-prong attack on a myth. 629 00:43:27,360 --> 00:43:34,360 We did not test the results. What kind of round will you get an explosion or a fire with? And that is a tracer round. 630 00:43:34,360 --> 00:43:36,360 But aren't tracer rounds illegal? 631 00:43:36,360 --> 00:43:41,360 Indeed they are, Mom, for air. Unless that is, you have friends in the FBI. 632 00:43:41,360 --> 00:43:47,360 At Alameda County Bomb Range, their FBI friend Frank is on hand to help. 633 00:43:48,360 --> 00:43:51,360 Frank, are these our special bullets that you procured for us? 634 00:43:51,360 --> 00:43:56,360 Yes, these are .223 caliber tracer rounds. 635 00:43:56,360 --> 00:43:58,360 Well, what is it that makes them work? 636 00:43:59,360 --> 00:44:11,360 The orange tip of the bullet contains phosphorus. When the round is fired, the friction with the air makes the phosphorus burn, which is why they glow and why they could ignite a gas tank. 637 00:44:14,360 --> 00:44:16,360 So it's a good job the fire crew is here then. 638 00:44:17,360 --> 00:44:21,360 Of all the permutations, what's the worst possible case scenario for you guys? 639 00:44:21,360 --> 00:44:30,360 I think the worst possible scenario at this point due to the moderate winds and dry conditions we have, a fire starting, igniting, going over the hillside. 640 00:44:30,360 --> 00:44:34,360 So wayward bullets could spell disaster. 641 00:44:35,360 --> 00:44:36,360 I'll write that. 642 00:44:36,360 --> 00:44:38,360 Sharp shooter Jamie has clipped in. 643 00:44:42,360 --> 00:44:44,360 Okay, I'm loading. 644 00:44:46,360 --> 00:44:51,360 And he's going to start by firing a single tracer into the half filled gas tank. 645 00:44:52,360 --> 00:44:56,360 Three, two, one. 646 00:44:58,360 --> 00:44:59,360 Think you hit it? 647 00:44:59,360 --> 00:45:00,360 I don't know. 648 00:45:01,360 --> 00:45:04,360 Adam goes in to take a closer look at the damage. 649 00:45:05,360 --> 00:45:10,360 Well, he hit it. That's for sure. Right down there about seven o'clock here. 650 00:45:10,360 --> 00:45:14,360 I smell gas fumes, but obviously nothing caught on fire. 651 00:45:15,360 --> 00:45:20,360 Well, I guess what we got to do is plug these up and go for several rounds now. 652 00:45:22,360 --> 00:45:32,360 It was a direct hit, but no explosion. Grant seals the wound as Jamie gets ready to unleash this time a whole clip of bullets into the tank. 653 00:45:33,360 --> 00:45:36,360 Burn hole! Burn hole! 654 00:45:36,360 --> 00:45:39,360 Three, two, one. 655 00:45:40,360 --> 00:45:48,360 Jamie begins unloading rapid fire. Direct hit after direct hit, but no explosion. 656 00:45:51,360 --> 00:45:53,360 But then trouble. 657 00:45:55,360 --> 00:45:57,360 Did you see that tracer shot up into the field? 658 00:45:57,360 --> 00:46:00,360 Yeah, I did. Hold on a second. Smoking the grass. 659 00:46:00,360 --> 00:46:03,360 And I can see gasoline pouring out the front of the tank. 660 00:46:03,360 --> 00:46:05,360 A tracer popped up into the field. 661 00:46:06,360 --> 00:46:14,360 The range is shut down. Fire plus leaking gas, not ideal. So the fire crew get in to investigate. 662 00:46:16,360 --> 00:46:22,360 They said the worst case scenario is, grass gets on fire, grass through fence that can't be gotten through. 663 00:46:23,360 --> 00:46:26,360 Wind heading that way where vehicles can't get on. 664 00:46:26,360 --> 00:46:28,360 Worst case scenario, it happened. 665 00:46:28,360 --> 00:46:30,360 How does it seem? Seems alright? 666 00:46:30,360 --> 00:46:32,360 I don't see any smoke. 667 00:46:32,360 --> 00:46:33,360 Alright, cool. 668 00:46:33,360 --> 00:46:36,360 They're off the hook, but the myth ain't so hot. 669 00:46:36,360 --> 00:46:42,360 I've had my fun working off a full clip of incendiary rounds, of tracer rounds here. 670 00:46:42,360 --> 00:46:45,360 I say, you know, you guys pick your weapons. 671 00:46:47,360 --> 00:46:48,360 I'm all around. 672 00:46:48,360 --> 00:46:49,360 Those will be for you. 673 00:46:49,360 --> 00:46:50,360 Close up? 674 00:46:51,360 --> 00:46:52,360 Sure. 675 00:46:52,360 --> 00:46:53,360 Sweet. 676 00:46:54,360 --> 00:47:00,360 To silence the critics, they're going for broke. If this doesn't cause an explosion, nothing will. 677 00:47:01,360 --> 00:47:02,360 Okay, is everybody loaded? 678 00:47:02,360 --> 00:47:03,360 Loaded. 679 00:47:03,360 --> 00:47:06,360 Okay, safety's off, fire at will. 680 00:47:11,360 --> 00:47:16,360 It's like General Custer's last stand, but with tracer rounds. 681 00:47:17,360 --> 00:47:21,360 And the tank? Nothing. Nada. Zip. 682 00:47:21,360 --> 00:47:24,360 This myth is surely busted again. 683 00:47:24,360 --> 00:47:29,360 75 gunshots later, and the tank's got more holes than a donut shop. 684 00:47:29,360 --> 00:47:34,360 But Jamie wants to try once more with the tank further away. 685 00:47:34,360 --> 00:47:43,360 The reason being that these tracer rounds ignite from air friction and understandably, you know, they're probably not going to ignite right as they come out of the barrel. 686 00:47:43,360 --> 00:47:45,360 It may take a little distance. 687 00:47:45,360 --> 00:47:51,360 So they reposition the gunpoint another 50 feet back and top of the barrel. 688 00:47:52,360 --> 00:47:55,360 With Grant safely out of the way. 689 00:47:55,360 --> 00:47:59,360 And three, two, one. 690 00:47:59,360 --> 00:48:04,360 As the rounds fly, it's the same old story until. 691 00:48:06,360 --> 00:48:08,360 At last, we have fire. 692 00:48:10,360 --> 00:48:12,360 The high speed shows the moment of ignition. 693 00:48:12,360 --> 00:48:18,360 And who knows if the tank was not like Swiss cheese, there may have even been a fire. 694 00:48:18,360 --> 00:48:23,360 But if it was not like Swiss cheese, there may have even been an explosion. 695 00:48:23,360 --> 00:48:27,360 The tracer round will in fact ignite gasoline in the tank. 696 00:48:27,360 --> 00:48:32,360 And if you had an enclosed tank, pressure plus fire plus the correct air fuel mixture equals explosion. 697 00:48:32,360 --> 00:48:38,360 So I'd say we call this one confirmed and everyone can go home and rest easy. 698 00:48:38,360 --> 00:48:41,360 Why didn't we get an RPG? 699 00:48:41,360 --> 00:48:43,360 It would have been a lot faster. 700 00:48:43,360 --> 00:48:45,360 We'll get the next revisit. 701 00:48:45,360 --> 00:48:49,360 Someone's going to write in and say, you guys should have used an RPG because that would definitely have blown up the car. 702 00:48:49,360 --> 00:48:53,360 And then we'll go get one of those and then we'll blow up the car and then there'll be some other problem. 703 00:48:53,360 --> 00:48:55,360 And we're fine with that. 704 00:48:55,360 --> 00:48:57,360 I don't know how to actually call this one. 705 00:48:57,360 --> 00:48:59,360 We busted it the first time. 706 00:48:59,360 --> 00:49:02,360 We confirmed it the second time without somehow reversing our previous results. 707 00:49:02,360 --> 00:49:05,360 Tracer rounds will blow up a gas tank.