1 00:00:00,000 --> 00:00:06,200 On this episode of Mythbusters, will steel-toed boots cut your toes off? 2 00:00:06,200 --> 00:00:10,000 Adam and Jamie take on a tall tale of shoe shearing. 3 00:00:10,000 --> 00:00:12,000 Oh, man. 4 00:00:12,000 --> 00:00:14,000 And will Carrie take wing? 5 00:00:14,000 --> 00:00:16,000 I have a piñata. 6 00:00:16,000 --> 00:00:21,000 As a Japanese myth takes off in bottle rocket blast off. 7 00:00:22,000 --> 00:00:26,000 Who are the Mythbusters? 8 00:00:26,000 --> 00:00:27,000 Adam Savage 9 00:00:27,000 --> 00:00:29,000 Anthral over my head, man! 10 00:00:29,000 --> 00:00:30,000 Jamie Heineman 11 00:00:30,000 --> 00:00:33,000 Gets me all worked up just lookin at it 12 00:00:33,000 --> 00:00:34,000 Tori Balecci 13 00:00:34,000 --> 00:00:35,000 Whoa! 14 00:00:35,000 --> 00:00:36,000 Carrie Byron 15 00:00:36,000 --> 00:00:37,000 That was crazy! 16 00:00:37,000 --> 00:00:39,000 And Grant Imahara 17 00:00:39,000 --> 00:00:40,000 Go get him, boy! 18 00:00:40,000 --> 00:00:44,000 Between them over 50 years of special effects experience 19 00:00:44,000 --> 00:00:45,000 Go! 20 00:00:48,000 --> 00:00:49,000 No! 21 00:00:49,000 --> 00:00:51,000 They don't just tell the myth. 22 00:00:51,000 --> 00:00:55,000 They put them to the test. 23 00:01:04,000 --> 00:01:07,000 Well, this one actually comes out of our own industry, Jamie. 24 00:01:07,000 --> 00:01:10,000 And I've got some friends who I really wish were more skeptical than they are, 25 00:01:10,000 --> 00:01:12,000 because they hold to this idea. 26 00:01:12,000 --> 00:01:17,000 You mean the myth that steel-toed boots are actually more dangerous than regular boots? 27 00:01:17,000 --> 00:01:22,000 For decades, safety campaigners have called for protective foot gear at work. 28 00:01:22,000 --> 00:01:25,000 Suddenly, the worst happens. 29 00:01:26,000 --> 00:01:29,000 But some workers won't believe the hype. 30 00:01:29,000 --> 00:01:34,000 They have this idea that if there's an industrial accident where a huge weight falls on your foot, 31 00:01:34,000 --> 00:01:40,000 that a steel cap boot will actually curl in and crush and cut off your toes, 32 00:01:40,000 --> 00:01:44,000 whereas if you weren't wearing steel-tipped boots, you'd still have your toes. 33 00:01:44,000 --> 00:01:50,000 So, steel boot caps, guardian toe angels, or serial toe slicers? 34 00:01:50,000 --> 00:01:56,000 To test the myth, Adam and Jamie are going to try to turn a steel toe cap into a guillotine. 35 00:01:57,000 --> 00:01:58,000 So what's the plan? 36 00:01:58,000 --> 00:02:01,000 Well, as we always do, the plan's got two parts. 37 00:02:01,000 --> 00:02:07,000 The first part is to duplicate the testing rig that they use to give these shoes their rating. 38 00:02:07,000 --> 00:02:11,000 The second is to amp up that testing rig with weight or whatever we need to do 39 00:02:11,000 --> 00:02:14,000 to duplicate the toe amputating circumstance. 40 00:02:14,000 --> 00:02:18,000 What they need is a mobile safety shoe truck. 41 00:02:18,000 --> 00:02:19,000 Hey, here's one. 42 00:02:20,000 --> 00:02:23,000 Inside, it's Florida-sealing industrial footwear. 43 00:02:24,000 --> 00:02:27,000 Emelda Marcos shoe closet, Mythbusters style. 44 00:02:27,000 --> 00:02:28,000 This is great. 45 00:02:28,000 --> 00:02:30,000 This is actually a steel cap. 46 00:02:30,000 --> 00:02:31,000 That's a steel toe cap. 47 00:02:31,000 --> 00:02:33,000 That's exactly what that is. 48 00:02:33,000 --> 00:02:35,000 Now, I also have a titanium, too. 49 00:02:35,000 --> 00:02:40,000 And Karen's also got fiberglass toe caps and steel-toed tennis shoes. 50 00:02:40,000 --> 00:02:41,000 Steel-toed sneakers? 51 00:02:41,000 --> 00:02:42,000 Yeah. 52 00:02:42,000 --> 00:02:45,000 Everything here has some type of protective toe. 53 00:02:45,000 --> 00:02:50,000 But Karen confesses that some customers do live in fear of the steel toe cutter. 54 00:02:50,000 --> 00:02:53,000 If they were wearing steel toe, if something heavy enough fell on it, 55 00:02:53,000 --> 00:02:57,000 that it would just cut their toes off completely rather than if they weren't wearing it, 56 00:02:57,000 --> 00:03:01,000 then their toes would be protected, which of course sounds absurd to me. 57 00:03:04,000 --> 00:03:07,000 I apologize in advance for my foot odor. 58 00:03:07,000 --> 00:03:11,000 With Karen wondering how quickly she can get the truck fumigated, 59 00:03:11,000 --> 00:03:13,000 Adam shakes his booty back to base. 60 00:03:13,000 --> 00:03:15,000 Can someone open the door for me? 61 00:03:16,000 --> 00:03:21,000 Jamie gets down to what he does best, build stuff that breaks stuff. 62 00:03:22,000 --> 00:03:25,000 Basically, what I'm going to be building is a large guillotine, 63 00:03:25,000 --> 00:03:28,000 except we're not going to have an axe on the end of it that chops something off. 64 00:03:28,000 --> 00:03:30,000 It's going to crush something. 65 00:03:30,000 --> 00:03:33,000 The shock load rig is almost complete. 66 00:03:33,000 --> 00:03:37,000 Adam, confident in his steel caps, tries it out. 67 00:03:38,000 --> 00:03:39,000 There you go. 68 00:03:39,000 --> 00:03:40,000 Are you sure? 69 00:03:40,000 --> 00:03:42,000 I'm not sure how much further I'll go in a guzzle. 70 00:03:42,000 --> 00:03:45,000 Albeit with the rig minimum of 25 pounds. 71 00:03:46,000 --> 00:03:47,000 That's cool. 72 00:03:47,000 --> 00:03:49,000 Dude, it's a guillotine. 73 00:03:50,000 --> 00:03:51,000 Come on, you big baby. 74 00:03:51,000 --> 00:03:52,000 No. 75 00:03:55,000 --> 00:03:58,000 Adam, we can't see inside these shoes when they're being tested. 76 00:03:58,000 --> 00:04:00,000 How are we going to know what our results are? 77 00:04:00,000 --> 00:04:02,000 I mean, I'm not putting my feet in there. I don't know about you. 78 00:04:02,000 --> 00:04:04,000 No, I'm definitely not. 79 00:04:04,000 --> 00:04:07,000 Well, I've actually got an idea about that, and it comes out of a technology 80 00:04:07,000 --> 00:04:10,000 used for testing the effects of land mines. 81 00:04:10,000 --> 00:04:11,000 Mine's a little bit different. 82 00:04:11,000 --> 00:04:16,000 It's called a frangible foot, and it uses mostly our old friend Ballistics' gel. 83 00:04:17,000 --> 00:04:21,000 To get a smooth mold, Adam once again shaves for the show. 84 00:04:21,000 --> 00:04:23,000 This is a two-stage process. 85 00:04:23,000 --> 00:04:27,000 The first stage, I'll be slathering what's called dental alginate over my leg, 86 00:04:27,000 --> 00:04:30,000 and it's what the dentist used to cast your teeth. 87 00:04:30,000 --> 00:04:35,000 For support, the alginate mold is covered with several layers of plaster bandages, 88 00:04:35,000 --> 00:04:38,000 which, after hardening, can be cut and removed. 89 00:04:39,000 --> 00:04:41,000 Nicely done. 90 00:04:41,000 --> 00:04:44,000 Next, he fills the mold with a silicon-based rubber. 91 00:04:46,000 --> 00:04:47,000 Is it leaking over the side? 92 00:04:47,000 --> 00:04:48,000 Oh. 93 00:04:48,000 --> 00:04:51,000 Despite the spills, he's thrilled with the results. 94 00:04:54,000 --> 00:04:56,000 Mungo is happy. 95 00:04:57,000 --> 00:05:02,000 Stage two, Adam makes a plaster mother mold and takes a cast of his silicon foot. 96 00:05:04,000 --> 00:05:06,000 Oh, it looks good. 97 00:05:06,000 --> 00:05:08,000 Look at that foot there. 98 00:05:08,000 --> 00:05:09,000 Look at that foot. 99 00:05:09,000 --> 00:05:12,000 But so far, he's only gone skin deep. 100 00:05:13,000 --> 00:05:18,000 To get right down to the bone, Adam tries out chicken legs and bamboo 101 00:05:18,000 --> 00:05:21,000 for their similarity to human bones. 102 00:05:21,000 --> 00:05:23,000 All of a sudden, I'm not sure I like bamboo. 103 00:05:23,000 --> 00:05:26,000 His tests show that neither is a match. 104 00:05:26,000 --> 00:05:29,000 So he goes for a fiberglass alternative. 105 00:05:29,000 --> 00:05:34,000 These are real human feet, and our ultimate goal is to make castings of these 106 00:05:34,000 --> 00:05:38,000 in a material that matches the bone exactly. 107 00:05:38,000 --> 00:05:42,000 Stage three, Adam casts a mold of the skeletal feet. 108 00:05:43,000 --> 00:05:47,000 That one's done and mixes a hard resin cocktail. 109 00:05:47,000 --> 00:05:51,000 When set, it's a perfect substitute for real bone. 110 00:05:52,000 --> 00:05:56,000 Hot glue for tendons and the surrogate skeleton is complete. 111 00:05:56,000 --> 00:05:59,000 Stage four puts flesh on the bones. 112 00:05:59,000 --> 00:06:06,000 Adam uses a new ballistics material, which he pours over the skeleton in his plaster leg mold. 113 00:06:06,000 --> 00:06:08,000 I'm actually really pleased with this. 114 00:06:08,000 --> 00:06:15,000 I think this is the state of the art for mythbusters and flesh limb analogs for testing damage. 115 00:06:15,000 --> 00:06:19,000 There have been a ton of experiments we've done where we've needed bodies and skeletons 116 00:06:19,000 --> 00:06:21,000 and things of different types. 117 00:06:21,000 --> 00:06:23,000 How you doing there, buddy? How you doing? 118 00:06:23,000 --> 00:06:26,000 Yeah, you're doing so good. We're gonna shoot you. 119 00:06:28,000 --> 00:06:32,000 This is the best we've ever gotten in terms of something that will really show us 120 00:06:32,000 --> 00:06:35,000 what happens when this accident occurs. 121 00:06:37,000 --> 00:06:41,000 Meanwhile, Jamie has applied the finishing touches to his toe torturer, 122 00:06:41,000 --> 00:06:44,000 and they're ready to start testing. 123 00:06:44,000 --> 00:06:48,000 All the shoes that we're testing are the highest rated safety boots 124 00:06:48,000 --> 00:06:51,000 you can get, and that's called the ANSI 75 rating. 125 00:06:51,000 --> 00:06:58,000 The plan is to systematically increase the height and the weight of the things that are dropped on the shoe, 126 00:06:58,000 --> 00:07:01,000 probably until the shoe starts to crunch. 127 00:07:01,000 --> 00:07:05,000 Beyond that, we've got our mythbusters frangible legs, 128 00:07:05,000 --> 00:07:09,000 which should tell us the extent and severity of any injury that gets sustained. 129 00:07:09,000 --> 00:07:13,000 I still don't think that we're gonna get any cut off toes. 130 00:07:13,000 --> 00:07:17,000 Now we officially have a dangerous thing, so let's be careful around it. 131 00:07:17,000 --> 00:07:20,000 Wow, that feels really weird. 132 00:07:23,000 --> 00:07:25,000 How come you don't wear steel-toed boots, Jamie? 133 00:07:25,000 --> 00:07:28,000 I generally try not to drop things on my feet. 134 00:07:28,000 --> 00:07:30,000 Safety pin is out. 135 00:07:30,000 --> 00:07:36,000 First up on the chopping block, steel cap boot, 75 pounds from three feet. 136 00:07:36,000 --> 00:07:38,000 In three, two, one. 137 00:07:41,000 --> 00:07:42,000 Well, there you go. 138 00:07:42,000 --> 00:07:43,000 Well, there it is. 139 00:07:43,000 --> 00:07:49,000 I see a little distention in the leather here, but there doesn't seem to be any deformation at all. 140 00:07:49,000 --> 00:07:50,000 Could be some variations. 141 00:07:50,000 --> 00:07:54,000 It looks like it may have mashed it just a hair, but not enough to hurt. 142 00:07:54,000 --> 00:07:57,000 It may just be the leather flapping at itself. 143 00:07:57,000 --> 00:08:02,000 That's an ANSI 75 rating at the official test height and weight. 144 00:08:02,000 --> 00:08:05,000 Big deal. Let's ramp it up. 145 00:08:08,000 --> 00:08:12,000 The impending Toma Geden has got Adam excited. 146 00:08:12,000 --> 00:08:15,000 Oh, yeah. Oh, yeah. 147 00:08:17,000 --> 00:08:19,000 Oh, that's great. 148 00:08:20,000 --> 00:08:22,000 You're gonna stand over there. 149 00:08:25,000 --> 00:08:29,000 The drop rig is now at toe-trembling 400 pounds. 150 00:08:29,000 --> 00:08:32,000 In three, two, one. 151 00:08:33,000 --> 00:08:34,000 Oh, man. 152 00:08:35,000 --> 00:08:37,000 These are resilient shoes. 153 00:08:37,000 --> 00:08:42,000 Even at the rig's maximum weight, the steel cap doesn't look to have been squashed flat. 154 00:08:44,000 --> 00:08:46,000 It's like stealing a dead guy's shoes. 155 00:08:48,000 --> 00:08:50,000 You haven't done that since the war, have you, Jimmy? 156 00:08:50,000 --> 00:08:51,000 Which war? 157 00:08:51,000 --> 00:08:55,000 I do have a broken metatarsal here. 158 00:08:55,000 --> 00:08:58,000 But they look like they might still be attached to your body. 159 00:08:58,000 --> 00:08:59,000 Oh, yeah, they would. 160 00:08:59,000 --> 00:09:02,000 But that's 400 pounds from three feet. 161 00:09:02,000 --> 00:09:04,000 What do you think we ought to go to? Let's go to six feet now. 162 00:09:04,000 --> 00:09:09,000 I want to see some toes cut off or crushed beyond all recognition. 163 00:09:09,000 --> 00:09:11,000 Three, two, one. 164 00:09:14,000 --> 00:09:17,000 Well, it sort of removed itself there. 165 00:09:20,000 --> 00:09:21,000 It's flat as a pancake. 166 00:09:21,000 --> 00:09:22,000 Wow. 167 00:09:22,000 --> 00:09:25,000 Dr. Heinemann performs a boot autopsy. 168 00:09:26,000 --> 00:09:30,000 Add the toes in bad shape, but it's still in one piece. 169 00:09:30,000 --> 00:09:33,000 We've got a break in the first metatarsal. 170 00:09:33,000 --> 00:09:35,000 We had a break in the second metatarsal. 171 00:09:36,000 --> 00:09:38,000 So there's your steel toe. 172 00:09:38,000 --> 00:09:42,000 That's a pretty serious deformation, but it still ain't a toe cutting deformation. 173 00:09:42,000 --> 00:09:45,000 No amputation, no celebration. 174 00:09:45,000 --> 00:09:50,000 The myth of the steel toe cap toe slicer is looking shaky. 175 00:09:50,000 --> 00:10:09,000 The myth that we're about to do came as a result of an email that someone sent me from a clip from a Japanese game show. 176 00:10:09,000 --> 00:10:10,000 Oh, oh, yeah. 177 00:10:10,000 --> 00:10:19,000 The one where he's got the soda bottle strapped to his back full of water and like a bicycle pump full of air and he takes off like, I don't know, 30, 40 feet or something like that. 178 00:10:19,000 --> 00:10:21,000 Who's going to be stupid enough to strap this thing to their ass? 179 00:10:21,000 --> 00:10:28,000 Well, I think that would be Carrie, not because she's stupid, which we know she's not, but because she's lighter than you or I. 180 00:10:28,000 --> 00:10:33,000 I've seen that clip. I've seen it. I think that one's faked. There's got to be a cable involved somewhere. 181 00:10:33,000 --> 00:10:34,000 Well, you're going to find out. 182 00:10:34,000 --> 00:10:50,000 So can the mythbusters launch someone 40 yards on a ballistic trajectory with a bottle rocket jetback using just water for fuel? 183 00:10:50,000 --> 00:10:57,000 First, they need to build a prototype and Grant's found a recipe on the Internet. 184 00:10:58,000 --> 00:11:10,000 Our bottle rocket is going to be composed of a plastic soda bottle, a bike pump to provide air pressure, a rubber stopper and some plumbing bits from the hardware store. 185 00:11:10,000 --> 00:11:17,000 It's all hands to the pump. And when Tori adds a pointy bit, they've got themselves a rocket. Kind of thing. 186 00:11:17,000 --> 00:11:19,000 It's pretty cool. 187 00:11:19,000 --> 00:11:21,000 It's like a two second job. 188 00:11:21,000 --> 00:11:23,000 Let's do it. 189 00:11:23,000 --> 00:11:28,000 Outside, they add the power system, water and pressurized air. 190 00:11:28,000 --> 00:11:30,000 Starting to get a little pressure. 191 00:11:30,000 --> 00:11:32,000 Excellent. It won't be long now. 192 00:11:32,000 --> 00:11:34,000 I don't think I can hold on to it much longer. 193 00:11:34,000 --> 00:11:35,000 Really? 194 00:11:35,000 --> 00:11:36,000 It's starting to lift. 195 00:11:36,000 --> 00:11:38,000 Okay, put it down on the ground. 196 00:11:41,000 --> 00:11:42,000 Where'd it go? 197 00:11:45,000 --> 00:11:46,000 I guess it works. 198 00:11:46,000 --> 00:11:47,000 Well, I guess we know it works. 199 00:11:47,000 --> 00:11:51,000 Turns out being a rocket scientist isn't so hard after all. 200 00:11:51,000 --> 00:11:53,000 Hey, I got it. 201 00:11:53,000 --> 00:11:55,000 Okay, pay attention at the back. 202 00:11:55,000 --> 00:11:59,000 Bottle rockets are a perfect illustration of Newton's third law. 203 00:12:00,000 --> 00:12:02,000 The air inside is pressurized. 204 00:12:02,000 --> 00:12:11,000 When the rubber stopper is released, air and water rush down through the nozzle, thrusting the bottle up with an equal and opposite force. 205 00:12:11,000 --> 00:12:14,000 The guys have their proof of concept. 206 00:12:14,000 --> 00:12:16,000 So now the fine tuning. 207 00:12:17,000 --> 00:12:19,000 I can do this all day. 208 00:12:22,000 --> 00:12:24,000 See? Science is fun. 209 00:12:27,000 --> 00:12:33,000 So, knowing that bottle rocketry is actually very popular, what is the current world record for altitude? 210 00:12:33,000 --> 00:12:39,000 The current world record is 517 meters set by US water rockets. 211 00:12:39,000 --> 00:12:45,000 And it was set by a device called the X-10, which is shrouded in secrecy. 212 00:12:46,000 --> 00:12:51,000 All of the specs we have of it are based on guesstimates from looking at photos and video. 213 00:12:51,000 --> 00:13:03,000 But it seems to be not a soda bottle, but actually an 8-foot tube of fluorescent light protective covering polycarbonate wrapped in high-strength composite and powered solely by tap water and air pressure. 214 00:13:03,000 --> 00:13:07,000 May 2005, Galway, New York State. 215 00:13:08,000 --> 00:13:17,000 The US water rockets team sets a new world record, as its X-10 rocket reaches 1,696 feet. 216 00:13:20,000 --> 00:13:30,000 Before parachute, perfecting the Hifbusters bottle rocket, they're looking for the water-to-air ratio that gives maximum thrust. 217 00:13:31,000 --> 00:13:36,000 Excellent. 218 00:13:36,000 --> 00:13:43,000 Several dry runs later, they conclude that one-third water, two-thirds air, is right on the money. 219 00:13:43,000 --> 00:13:50,000 I'm really excited. I think these tests went extremely well. I mean, we found the butter zone. About one-third full is exactly what we need. 220 00:13:50,000 --> 00:13:52,000 Now they want some payload data. 221 00:13:52,000 --> 00:13:58,000 So what we want to know now is how high a three-liter bottle can launch this two kilogram payload? 222 00:13:58,000 --> 00:14:03,000 20 psi? 40 psi? 223 00:14:03,000 --> 00:14:07,000 Carrie pumps as much air as she dares without bursting the bottle. 224 00:14:07,000 --> 00:14:09,000 Okay, we're at 60 psi. 225 00:14:09,000 --> 00:14:11,000 Okay, standby. 226 00:14:11,000 --> 00:14:16,000 Three, two, one, out! 227 00:14:16,000 --> 00:14:19,000 That's really stiff. This might be a two-hander. 228 00:14:19,000 --> 00:14:22,000 In three, two, one. 229 00:14:23,000 --> 00:14:31,000 Woo, that's awesome! That means we got two kilograms, 20 feet. That's a nice, easy round calculation. 230 00:14:31,000 --> 00:14:41,000 At 60 psi, they'll need 28 three-liter bottles just to get Carrie off the ground, let alone propel her 40 yards. Time to supersize. 231 00:14:41,000 --> 00:14:47,000 All right, this jug is 18.93 liters. I'm going to fill it one-third full with water. 232 00:14:47,000 --> 00:14:52,000 If the soda bottles fail to get Carrie airborne, this could be plan B. 233 00:14:52,000 --> 00:14:55,000 Okay, two kilogram load. 234 00:14:55,000 --> 00:14:57,000 I'd say I'm a little bit frightened. 235 00:14:57,000 --> 00:14:59,000 Be afraid. Be very afraid. 236 00:15:04,000 --> 00:15:06,000 Oh, it's getting crazy. We're going to have to launch it. 237 00:15:06,000 --> 00:15:07,000 All right. 238 00:15:07,000 --> 00:15:10,000 Stand back. We're going to have to do it. 239 00:15:10,000 --> 00:15:13,000 Three, two, one. 240 00:15:13,000 --> 00:15:15,000 Holy crap! Run! 241 00:15:15,000 --> 00:15:17,000 Run! Run! 242 00:15:21,000 --> 00:15:25,000 Now that's what I call a water cooler moment. 243 00:15:25,000 --> 00:15:30,000 That was a good launch. I went up about, I'd have to guess, 244 00:15:30,000 --> 00:15:32,000 How about 50, 60 feet? 245 00:15:32,000 --> 00:15:34,000 It had to be about 50, 60 feet in the air. 246 00:15:34,000 --> 00:15:38,000 There was plenty of thrust, but for our would-be astronaut, 247 00:15:38,000 --> 00:15:40,000 Exactly reassuring. 248 00:15:40,000 --> 00:15:45,000 I have to say it was extremely scary because this is very pointy, this is very heavy. 249 00:15:45,000 --> 00:15:50,000 It went really high in the air and for some reason it headed right for the cameraman 250 00:15:50,000 --> 00:15:51,000 and the sound woman. 251 00:15:51,000 --> 00:15:52,000 Run! Run! 252 00:15:52,000 --> 00:15:56,000 And he started running one way and she started running the other way and everybody going, 253 00:16:01,000 --> 00:16:06,000 In the myth of the steel cap toe cutters, the boys have given Adam's frangible foot 254 00:16:06,000 --> 00:16:08,000 a 400 pound stubby. 255 00:16:08,000 --> 00:16:13,000 The steel toe cap was severely dented, but not crushed completely flat. 256 00:16:15,000 --> 00:16:18,000 Now they're going to leave the toe cap out of the equation. 257 00:16:18,000 --> 00:16:26,000 Because the myth involves steel toe boots causing you more harm than they might actually protect you in an accident, 258 00:16:26,000 --> 00:16:30,000 we'd like to show what would happen if you weren't wearing steel toe boots at all. 259 00:16:30,000 --> 00:16:35,000 75 pounds, 3 feet, non-steel toe boot. 260 00:16:37,000 --> 00:16:42,000 But the results suggest that the guys have tripped over their own foot. 261 00:16:44,000 --> 00:16:46,000 Okay, I think we've got a problem here. 262 00:16:46,000 --> 00:16:51,000 Our new ballistic material, unlike the gelatin, it doesn't break or shatter under that kind of load, 263 00:16:51,000 --> 00:16:53,000 it tends to bounce back. 264 00:16:53,000 --> 00:16:58,000 I mean it matches the density of flesh, but perhaps not the behavior as much as we'd like. 265 00:16:58,000 --> 00:17:04,000 The springy consistency is pre-fanning a realistic record of impact damage. 266 00:17:04,000 --> 00:17:12,000 The boots on the wrong foot, so they decide to start from scratch with good old Plan B, which is... 267 00:17:12,000 --> 00:17:20,000 Take the toe of the boot, put a cylinder of clay in there, and see how much tension there is from the weight dropping on the boot. 268 00:17:20,000 --> 00:17:24,000 It's like the aftermath of a shot from like a samurai film, like, 269 00:17:24,000 --> 00:17:25,000 OYAKU! 270 00:17:27,000 --> 00:17:32,000 Their new method is borrowed from ANSI, the American National Standards Institute. 271 00:17:33,000 --> 00:17:39,000 For decades, men with beards and white coats have been crushing toes for science. 272 00:17:39,000 --> 00:17:46,000 It's easy to see what this impact would do to the unprotected foot, as represented by this foam wax form. 273 00:17:52,000 --> 00:17:57,000 A foot subjected to such a blow without protection is literally exploded. 274 00:17:58,000 --> 00:18:03,000 Alright, so this is 75 pounds from 3 feet ANSI test with steel-toed boot. 275 00:18:04,000 --> 00:18:08,000 And three, two, one! 276 00:18:10,000 --> 00:18:15,000 It's funny when you read the literature about the ANSI testing, they say that in order for the boot to be rated, 277 00:18:15,000 --> 00:18:20,000 at the total compression, there can't be less than half an inch. 278 00:18:20,000 --> 00:18:21,000 Which is what it is. 279 00:18:22,000 --> 00:18:26,000 So the steel caps passed the ANSI shock load criteria. 280 00:18:26,000 --> 00:18:30,000 Now for the all-important control test with no toe cap. 281 00:18:30,000 --> 00:18:31,000 Two, one! 282 00:18:33,000 --> 00:18:34,000 Oh, yeah. 283 00:18:34,000 --> 00:18:36,000 Oh, yeah, let's see. 284 00:18:36,000 --> 00:18:38,000 Oh, dude! 285 00:18:38,000 --> 00:18:40,000 I believe the compression of the clay is what we'd call total. 286 00:18:40,000 --> 00:18:44,000 Looks a little different than what we were seeing from the ballistic shell. 287 00:18:44,000 --> 00:18:46,000 Oh, dude! 288 00:18:46,000 --> 00:18:48,000 It's just instantaneous. 289 00:18:48,000 --> 00:18:53,000 Damning evidence, and the steel cap conspiracy could soon be getting the boot. 290 00:18:53,000 --> 00:18:58,000 You know, but we still have not seen the phenomenon in the steel cap 291 00:18:58,000 --> 00:19:01,000 that duplicates that mythical toe cutting action. 292 00:19:01,000 --> 00:19:06,000 Well, there's another type of a rig that simply crushes hydraulically, 293 00:19:06,000 --> 00:19:09,000 and we can also measure the pressures involved when that happens. 294 00:19:09,000 --> 00:19:13,000 Jamie begins with a shop-bought arbor press. 295 00:19:13,000 --> 00:19:19,000 While he grapples with the assembly, Adam imagines Christmas Eve at the Heinemann household. 296 00:19:19,000 --> 00:19:24,000 I can totally see your wife up all night, you know, like, with the thing down in the basement. 297 00:19:24,000 --> 00:19:26,000 Don't come down, honey! 298 00:19:28,000 --> 00:19:30,000 Look, honey, I got you a log splitter. 299 00:19:30,000 --> 00:19:32,000 Oh, honey, I'm touched. 300 00:19:32,000 --> 00:19:34,000 Thank you, honey. 301 00:19:36,000 --> 00:19:39,000 Jamie adds a pressure gauge and car jack, 302 00:19:39,000 --> 00:19:43,000 and soon he's got a compression test rig, which gets Adam thinking. 303 00:19:43,000 --> 00:19:47,000 Jamie, just as a point of comparison, so we can know what a pain threshold is 304 00:19:47,000 --> 00:19:50,000 versus a bone breaking threshold. Will you put your own foot into the shear rig? 305 00:19:50,000 --> 00:19:54,000 If I do it, you've got to do double that weight with your steel caps on. 306 00:19:54,000 --> 00:19:58,000 How about this? If you can get, if you can withstand it until it starts to register on the needle, 307 00:19:58,000 --> 00:20:00,000 I'll give you 20 bucks. 308 00:20:01,000 --> 00:20:05,000 All right. Pain threshold, test number one. 309 00:20:06,000 --> 00:20:07,000 Okay, are we ready? 310 00:20:07,000 --> 00:20:08,000 Okay. 311 00:20:08,000 --> 00:20:09,000 Okay. 312 00:20:09,000 --> 00:20:11,000 Oh, wow, it's already sitting at 100 pounds. 313 00:20:11,000 --> 00:20:13,000 That's because I was pushing down on it. 314 00:20:17,000 --> 00:20:20,000 You were getting your reading by pushing down on the gauge? 315 00:20:20,000 --> 00:20:22,000 You're cheating, bastard. 316 00:20:22,000 --> 00:20:24,000 But Adam has the last laugh. 317 00:20:24,000 --> 00:20:27,000 I'm going to go for the metatarsal protection. 318 00:20:27,000 --> 00:20:29,000 Laced up like Frankenstein's monster. 319 00:20:29,000 --> 00:20:30,000 Oh, yeah. 320 00:20:30,000 --> 00:20:33,000 Adam steps forward with confident tread. 321 00:20:36,000 --> 00:20:37,000 1200. 322 00:20:37,000 --> 00:20:39,000 It seriously squeezes my foot. 323 00:20:40,000 --> 00:20:41,000 15. 324 00:20:44,000 --> 00:20:45,000 God! 325 00:20:47,000 --> 00:20:48,000 Okay, that's it. 326 00:20:50,000 --> 00:20:52,000 1600 pounds. 327 00:20:52,000 --> 00:20:55,000 Which just goes to prove absolutely nothing at all. 328 00:20:59,000 --> 00:21:05,000 The guys want to compare the failure point of boots with and without steel toe caps. 329 00:21:08,000 --> 00:21:11,000 First in the mangle, the steel-toed variety. 330 00:21:12,000 --> 00:21:13,000 5000. 331 00:21:14,000 --> 00:21:15,000 6000. 332 00:21:16,000 --> 00:21:18,000 Come on. Keep going. 333 00:21:19,000 --> 00:21:20,000 We lost our toes yet? 334 00:21:20,000 --> 00:21:21,000 Let it go and see. 335 00:21:22,000 --> 00:21:23,000 Sorry. 336 00:21:25,000 --> 00:21:27,000 That doesn't look very comfortable. 337 00:21:27,000 --> 00:21:28,000 No, that doesn't. 338 00:21:29,000 --> 00:21:33,000 That looks like we've lost our toes. 339 00:21:33,000 --> 00:21:36,000 So, 6000 pounds of pressure on your tootsies, 340 00:21:36,000 --> 00:21:38,000 and you'll be changing shoe size for good. 341 00:21:38,000 --> 00:21:40,000 Now for a regular boot. 342 00:21:40,000 --> 00:21:41,000 Can you say flat? 343 00:21:41,000 --> 00:21:46,000 With no steel cap, it crushes so quickly that Adam can barely get a reading. 344 00:21:46,000 --> 00:21:50,000 But total failure occurs at around 1200 pounds. 345 00:21:50,000 --> 00:21:52,000 Oh, it's like a clay extrusion hole. 346 00:21:53,000 --> 00:21:57,000 I don't know about you, but that seems like pretty crushed toes to me. 347 00:21:59,000 --> 00:22:04,000 So, steel toe caps provide five times more protection than regular boots. 348 00:22:04,000 --> 00:22:07,000 So, this myth is looking as flat as a pancake. 349 00:22:07,000 --> 00:22:09,000 You know, a load of crepe. 350 00:22:13,000 --> 00:22:15,000 In the myth of the bottle rocket, 351 00:22:15,000 --> 00:22:20,000 Tori Grant and Carrie have been conducting rigorous scientific experiments. 352 00:22:21,000 --> 00:22:23,000 Holy crap! Run! 353 00:22:23,000 --> 00:22:24,000 Run! Run! 354 00:22:25,000 --> 00:22:30,000 To see if soda bottles, air and water, could launch a human 40 yards. 355 00:22:32,000 --> 00:22:33,000 Translator. 356 00:22:33,000 --> 00:22:38,000 At Grand Control, Grant's received a translation of the Japanese game show 357 00:22:38,000 --> 00:22:40,000 that featured the alleged bottle rocket. 358 00:22:41,000 --> 00:22:42,000 That's kind of scary. 359 00:22:42,000 --> 00:22:46,000 It appears that they used just 15 bottles for blast off. 360 00:22:46,000 --> 00:22:52,000 Way less than the 28 at 60 psi, their own tests showed they'd need. 361 00:22:53,000 --> 00:22:55,000 I guess that's what we're going to shoot for. 362 00:22:55,000 --> 00:22:59,000 The only solution is to try and force the pressure in each bottle way up 363 00:22:59,000 --> 00:23:01,000 over 60 psi. 364 00:23:01,000 --> 00:23:05,000 Pressure is the only thing that they don't specify in the video. 365 00:23:05,000 --> 00:23:07,000 Which means, one more test. 366 00:23:07,000 --> 00:23:11,000 We need to find out how much pressure a three liter soda bottle can take. 367 00:23:12,000 --> 00:23:14,000 Faster, Grant. Faster. 368 00:23:14,000 --> 00:23:16,000 I'm booping as fast as I can! 369 00:23:16,000 --> 00:23:19,000 The myth specifies using a bike pump. 370 00:23:21,000 --> 00:23:24,000 And between them, they managed to boost the pressure inside the bottle 371 00:23:24,000 --> 00:23:27,000 to 95% of the pressure in the bottle. 372 00:23:27,000 --> 00:23:29,000 To 95 psi. 373 00:23:30,000 --> 00:23:33,000 But if Carrie's going to strap 15 of these to her back, 374 00:23:33,000 --> 00:23:37,000 she's keen to know at what point they'll become plastic bombs. 375 00:23:37,000 --> 00:23:40,000 But we need to know when is it going to blow. 376 00:23:40,000 --> 00:23:43,000 So I've got this rig, I've taken out of my combat robot, 377 00:23:43,000 --> 00:23:47,000 and I can provide higher pressure air than we can get here in the shop. 378 00:23:48,000 --> 00:23:53,000 Grant spent years perfecting the design of Dead Blow, his title fighting battle bot. 379 00:23:53,000 --> 00:24:00,000 In 2000, his creation beat all comers to reach the final of the hit television show, Battle Bots. 380 00:24:00,000 --> 00:24:03,000 These home-built robots would fight it out gladiator style. 381 00:24:03,000 --> 00:24:09,000 It's designed to pierce the armor of its opponents with a pneumatically powered titanium arm. 382 00:24:09,000 --> 00:24:14,000 It just gets on the other robots and pounds them mercilessly until they submit. 383 00:24:14,000 --> 00:24:19,000 Now, Grant plans to use that pneumatic power to test the limits of their soda bottles. 384 00:24:20,000 --> 00:24:24,000 Safely behind the blast shield, Grant applies the pressure. 385 00:24:24,000 --> 00:24:25,000 140! 386 00:24:26,000 --> 00:24:27,000 145! 387 00:24:28,000 --> 00:24:29,000 150! 388 00:24:31,000 --> 00:24:35,000 I guess about 150 is the limit. 389 00:24:36,000 --> 00:24:39,000 150 psi, definitely not safe. 390 00:24:40,000 --> 00:24:43,000 I think we're going to stick to the 95 we got with the bike pump. 391 00:24:43,000 --> 00:24:49,000 While Carrie and Grant are limited to the myth's Bicycle Pump-Prime 15 bottle rig, 392 00:24:49,000 --> 00:24:51,000 Tori looks into Plan B. 393 00:24:51,000 --> 00:24:54,000 For that, he's thinking big. 394 00:24:54,000 --> 00:24:56,000 Nine water coolers big. 395 00:24:56,000 --> 00:25:01,000 So the first thing I got to do is find out how much air pressure one of these bad boys would take. 396 00:25:03,000 --> 00:25:04,000 Eight more. 397 00:25:04,000 --> 00:25:06,000 I'm going to go to the bathroom. 398 00:25:06,000 --> 00:25:08,000 This is a game called Guess What I Had for Luck. 399 00:25:08,000 --> 00:25:10,000 You know, that's real material. 400 00:25:10,000 --> 00:25:17,000 On a serious note, safety concerns mean they need to repeat the failure pressure test on a water cooler bottle. 401 00:25:17,000 --> 00:25:20,000 In that way, no one gets hurt. 402 00:25:21,000 --> 00:25:22,000 75! 403 00:25:23,000 --> 00:25:24,000 80! 404 00:25:26,000 --> 00:25:27,000 85! 405 00:25:28,000 --> 00:25:29,000 90! 406 00:25:29,000 --> 00:25:31,000 Ha ha ha ha ha ha ha ha! 407 00:25:32,000 --> 00:25:33,000 Wow! 408 00:25:33,000 --> 00:25:35,000 Ha ha ha ha ha ha! 409 00:25:35,000 --> 00:25:36,000 Wow! 410 00:25:38,000 --> 00:25:39,000 Wow! 411 00:25:40,000 --> 00:25:42,000 Fire in the hole? 412 00:25:42,000 --> 00:25:45,000 Just goes to show size isn't everything. 413 00:25:46,000 --> 00:25:49,000 The big bottles fail at 90 psi. 414 00:25:50,000 --> 00:25:53,000 60 psi less than the soda bottles. 415 00:25:53,000 --> 00:25:54,000 90! 416 00:25:57,000 --> 00:25:58,000 Oh shoot. 417 00:25:58,000 --> 00:25:59,000 Sorry about that. 418 00:25:59,000 --> 00:26:01,000 We should have warned our neighbors. 419 00:26:01,000 --> 00:26:02,000 Sorry about that. 420 00:26:02,000 --> 00:26:05,000 Plan B won't be involving water coolers. 421 00:26:05,000 --> 00:26:09,000 Not unless Carrie's shrapnel insurance is up to date. 422 00:26:09,000 --> 00:26:11,000 So back to Plan A. 423 00:26:11,000 --> 00:26:14,000 15 soda bottles and a bicycle pump. 424 00:26:14,000 --> 00:26:20,000 We know that there are 15 bottles in the rig that they used in the film because we have a translation. 425 00:26:20,000 --> 00:26:29,000 So we're going to take one fifteenth of my weight, strap it to a three liter bottle, bring it up to 90 psi and see how high we can get. 426 00:26:29,000 --> 00:26:34,000 If one bottle can lift one fifteenth of Carrie's weight, they're in business. 427 00:26:34,000 --> 00:26:36,000 Three, two, one. 428 00:26:40,000 --> 00:26:43,000 Wow! That went exactly to the top of the scale. 429 00:26:43,000 --> 00:26:49,000 That means we've got exactly 16 feet and that's not metric. 430 00:26:49,000 --> 00:26:52,000 So let me do some conversions really fast and it's really high. 431 00:26:52,000 --> 00:26:54,000 We'll come back to that. 432 00:26:54,000 --> 00:27:02,000 This three liter bottle at 90 psi lifted three and a half kilograms, 490 centimeters. 433 00:27:02,000 --> 00:27:06,000 That's amazing because that's one fifteenth of my weight. 434 00:27:06,000 --> 00:27:10,000 15 bottles could possibly lift me to the top of this scale. 435 00:27:10,000 --> 00:27:15,000 And I can't wait to tell the boys because we all kind of, and it's probably faked. 436 00:27:15,000 --> 00:27:16,000 Maybe not. 437 00:27:16,000 --> 00:27:21,000 Encouraged by the test runs, Carrie and Grant get down to the real thing. 438 00:27:22,000 --> 00:27:27,000 Their job, the fifteenth bottle rig as specified in the game show clip. 439 00:27:27,000 --> 00:27:29,000 Oh yeah. Are you ready to fly? 440 00:27:29,000 --> 00:27:31,000 That's going to be amazing. 441 00:27:31,000 --> 00:27:35,000 And Grant's come up with a new way to pop Carrie's cork. 442 00:27:35,000 --> 00:27:44,000 Put the bottle on like that, cable ties click around this lip and you slide the ring up to secure it. 443 00:27:44,000 --> 00:27:47,000 It's locked now. Cable ties are holding it on. 444 00:27:47,000 --> 00:27:54,000 When you want to launch, pull the ring down and that'll release the bottle straight up. 445 00:27:54,000 --> 00:27:55,000 Simple. 446 00:27:55,000 --> 00:28:00,000 So with the design stage approved, mass production can begin at MASA, 447 00:28:00,000 --> 00:28:04,000 the Mythbusters Aeronautical and Space Administration. 448 00:28:04,000 --> 00:28:08,000 The bottles will be filled with air via bicycle inner tube valves, 449 00:28:08,000 --> 00:28:11,000 which are glued into place in rubber stoppers. 450 00:28:11,000 --> 00:28:14,000 So air will get in but not out. 451 00:28:14,000 --> 00:28:19,000 They carefully assemble fifteen cable tie quick release systems, 452 00:28:19,000 --> 00:28:22,000 which they secure and apply with housing. 453 00:28:24,000 --> 00:28:27,000 The PVC collars are fixed to a trigger plate 454 00:28:27,000 --> 00:28:32,000 and placed over the quick release platform to complete the rig. 455 00:28:32,000 --> 00:28:34,000 That is so awesome. 456 00:28:34,000 --> 00:28:38,000 Looks good, but can it walk the walk? 457 00:28:38,000 --> 00:28:40,000 Ha ha! 458 00:28:40,000 --> 00:28:44,000 Oh yeah, that is going to rock. 459 00:28:44,000 --> 00:28:49,000 Except for the gluing part if it comes out, that part would probably suck, 460 00:28:49,000 --> 00:28:51,000 but the rest of it is going to rock totally. 461 00:28:51,000 --> 00:28:55,000 Next, our rocket scientists have to come up with a remote mechanism 462 00:28:55,000 --> 00:28:58,000 to retract the trigger plate and launch the rocket. 463 00:28:58,000 --> 00:29:02,000 What we've got is all the trigger rings are connected to a plate. 464 00:29:02,000 --> 00:29:04,000 The plate is going to be pulled by one of these. 465 00:29:04,000 --> 00:29:07,000 This is a pneumatic actuator. It's air powered. 466 00:29:07,000 --> 00:29:10,000 If I put air in here, pushing the diaphragm down, 467 00:29:10,000 --> 00:29:15,000 it's going to pull the plate and pop all fifteen trigger valves at once. 468 00:29:19,000 --> 00:29:20,000 Perfect. 469 00:29:20,000 --> 00:29:26,000 Meanwhile, Tori is on a separate mission to get carry in the air by any means necessary. 470 00:29:29,000 --> 00:29:32,000 Here at Mythbushes, we have mandatory drug testing 471 00:29:32,000 --> 00:29:34,000 to ensure the safety of all our employees. 472 00:29:34,000 --> 00:29:36,000 And I pass every time. 473 00:29:36,000 --> 00:29:40,000 Tori is also going with a cable tie quick release system. 474 00:29:40,000 --> 00:29:42,000 But that's where the similarity ends. 475 00:29:42,000 --> 00:29:48,000 According to his calculations, he needs not fifteen, but fifty bottles 476 00:29:48,000 --> 00:29:51,000 to replicate the parameters of the game show flight. 477 00:29:51,000 --> 00:29:55,000 Since I'm not restricted by the myth, I'm not going to be using bicycle pump 478 00:29:55,000 --> 00:29:57,000 to fill this thing up with air. 479 00:29:57,000 --> 00:29:59,000 So I'm going to go ahead and use PVC pipe. 480 00:29:59,000 --> 00:30:02,000 I'm going to use compressed air and then I'll just plumb the whole thing together. 481 00:30:02,000 --> 00:30:05,000 So it'll be a big pipe system underneath the rig. 482 00:30:05,000 --> 00:30:09,000 While Tori builds his behemoth, out in the parking lot, 483 00:30:09,000 --> 00:30:14,000 Karrion Grant are preparing their official bottle rocket for a test launch. 484 00:30:14,000 --> 00:30:20,000 They fill their three liter rockets with one liter of water, then lock and load. 485 00:30:20,000 --> 00:30:23,000 Oh yeah, it's almost there. 486 00:30:23,000 --> 00:30:24,000 Nervous much? 487 00:30:24,000 --> 00:30:25,000 Yeah. 488 00:30:25,000 --> 00:30:29,000 And for good reason, as their plans suddenly spring a leak. 489 00:30:29,000 --> 00:30:32,000 Or to be more precise, fifteen leaks. 490 00:30:32,000 --> 00:30:36,000 Turns out that our valves, once they're screwed in, 491 00:30:36,000 --> 00:30:40,000 we didn't think about the fact that that is just going to turn it into a little hose. 492 00:30:40,000 --> 00:30:43,000 And all of our water is just stripping out like rain. 493 00:30:43,000 --> 00:30:49,000 Before they take the rig apart, they run a quick test of the pneumatic trigger. 494 00:30:49,000 --> 00:30:51,000 At least something works. 495 00:30:51,000 --> 00:30:55,000 Which is more than Tori can say for his rig. 496 00:30:55,000 --> 00:30:58,000 I don't know if this is going to work. 497 00:30:58,000 --> 00:31:05,000 He's been delayed by ill fitting stoppers, which have left him short on time and low on morale. 498 00:31:05,000 --> 00:31:12,000 I know on the show we always say failure is always an option, but let's face it, who wants to fail? 499 00:31:12,000 --> 00:31:16,000 While Tori derails, Grant and Karrion are back on track. 500 00:31:16,000 --> 00:31:17,000 Here's the new solution. 501 00:31:17,000 --> 00:31:21,000 Hose barb on either end of a ball valve when we want to pressure up. 502 00:31:21,000 --> 00:31:25,000 We open it, pump it up, and when we're done, we close it. 503 00:31:25,000 --> 00:31:27,000 No water leaking, no air leaking. 504 00:31:27,000 --> 00:31:29,000 Sounds good. 505 00:31:29,000 --> 00:31:34,000 Grant gives each bottle rocket a ball valve and launches just one step away. 506 00:31:34,000 --> 00:31:37,000 Okay, that should do it. 507 00:31:37,000 --> 00:31:41,000 All that's left is for Karrion to put her shoulder to the pump. 508 00:31:41,000 --> 00:31:43,000 Bottle three, I'm already getting tired. 509 00:31:43,000 --> 00:31:48,000 A dozen later, and she's just enough strength left to open the valve for launch. 510 00:31:48,000 --> 00:31:51,000 Ready to go? In three, two, one. 511 00:31:52,000 --> 00:31:54,000 Woo! 512 00:31:56,000 --> 00:31:59,000 Well, at least we know it works. 513 00:31:59,000 --> 00:32:01,000 Final test run? 514 00:32:01,000 --> 00:32:04,000 Obviously a complete success, a little scary. 515 00:32:04,000 --> 00:32:07,000 All right, so lesson number one, tape the bottles better. 516 00:32:07,000 --> 00:32:12,000 The rocket's maiden voyage was also its last, 517 00:32:12,000 --> 00:32:18,000 leaving our maiden rocketeer in two minds about launch day. 518 00:32:18,000 --> 00:32:22,000 This could be pretty dangerous, so I think maybe I'm going to shoot the simulate off first 519 00:32:22,000 --> 00:32:28,000 and see how it reacts and make sure I'm not going to, you know, break my neck. 520 00:32:29,000 --> 00:32:33,000 Despite her misgivings, Karrion remains the designated pilot, 521 00:32:33,000 --> 00:32:35,000 and Grant needs to measure her up. 522 00:32:35,000 --> 00:32:38,000 Not for a coffin, but for a launch gantry. 523 00:32:38,000 --> 00:32:45,000 According to the game show clip, the angle for a bottle rocket launch is 60 degrees. 524 00:32:46,000 --> 00:32:48,000 Just about perfect. 525 00:32:48,000 --> 00:32:50,000 That's it, that's just like the video. 526 00:32:50,000 --> 00:32:55,000 Next, Karrion tests out various harness options for the bottle rocket backpack. 527 00:32:58,000 --> 00:33:00,000 Wow, a miracle of flight. 528 00:33:00,000 --> 00:33:03,000 What the hell are you guys doing? 529 00:33:03,000 --> 00:33:05,000 I'm a piñata! 530 00:33:05,000 --> 00:33:09,000 One way or another, the guys are determined to get Karrion airborne. 531 00:33:10,000 --> 00:33:15,000 Tari's had a problem with the stopper design on his 50 bottle rig, 532 00:33:15,000 --> 00:33:18,000 but he's worked through the night and he thinks he's got it linked. 533 00:33:18,000 --> 00:33:20,000 There was another design that we found on the internet, 534 00:33:20,000 --> 00:33:23,000 and it was basically taking a PVC coupler, 535 00:33:23,000 --> 00:33:28,000 cutting a groove in it and slipping an O-ring over it. 536 00:33:28,000 --> 00:33:33,000 And then the bottle slips over that, and it gives us a great seal. 537 00:33:33,000 --> 00:33:34,000 I mean, it's like a perfect seal. 538 00:33:34,000 --> 00:33:39,000 After burning the midnight oil, it's a champagne moment for Tari. 539 00:33:39,000 --> 00:33:41,000 Three, two, one. 540 00:33:44,000 --> 00:33:46,000 I think it works. 541 00:33:46,000 --> 00:33:47,000 Hey, that worked. 542 00:33:47,000 --> 00:33:51,000 But on the eve of launch day, this rocket scientist has grave concerns. 543 00:33:51,000 --> 00:33:53,000 Are we going to get Karrion in the air? 544 00:33:53,000 --> 00:33:56,000 I don't know if she's going to really want to do this. 545 00:33:56,000 --> 00:33:59,000 I saw the 15 bottles launch yesterday, and it's pretty frightening. 546 00:33:59,000 --> 00:34:03,000 50 bottles, I don't know, she might get hurt. 547 00:34:05,000 --> 00:34:12,000 The myth that steel toe cap boots are more dangerous than regular boots is sinking fast. 548 00:34:12,000 --> 00:34:17,000 I don't know about you, but that seems like pretty crushed toes to me. 549 00:34:17,000 --> 00:34:22,000 But the boys won't be happy until some toes get the chop. 550 00:34:22,000 --> 00:34:28,000 So they turn to the shear attachment, or as it's affectionately known, the blade. 551 00:34:28,000 --> 00:34:31,000 Oh, there's one. 500. 552 00:34:32,000 --> 00:34:35,000 Oh, there's one. 500, 600. 553 00:34:35,000 --> 00:34:37,000 Oh, yuck. 554 00:34:37,000 --> 00:34:39,000 Oh. 555 00:34:39,000 --> 00:34:40,000 You had enough yet? 556 00:34:40,000 --> 00:34:41,000 Yes, not. 557 00:34:41,000 --> 00:34:44,000 Okay, we're at 1400, and we're pretty much cut all the way. 558 00:34:44,000 --> 00:34:45,000 The bar is flat against the bottom. 559 00:34:45,000 --> 00:34:47,000 So here's some handy facts. 560 00:34:47,000 --> 00:34:51,000 750 pounds will break every bone in your toes. 561 00:34:51,000 --> 00:34:56,000 1400 pounds, and you won't have any toes left to break. 562 00:34:57,000 --> 00:35:01,000 Oh, that's yummy. 563 00:35:01,000 --> 00:35:06,000 Meanwhile, the MythBusters research department has made a surprising discovery. 564 00:35:08,000 --> 00:35:12,000 Well, you know, as often as the case on MythBusters, we've uncovered some information 565 00:35:12,000 --> 00:35:19,000 that actually lends a little credence to this concern about amputation involved with steel tip shoes. 566 00:35:19,000 --> 00:35:23,000 Absolutely. It was really difficult to find this piece of information, 567 00:35:23,000 --> 00:35:29,000 but we did turn up a case in 2002 in Australia of a man who had an accident involving his steel toe boots. 568 00:35:29,000 --> 00:35:32,000 He was working near a forklift, was loading some pipe, 569 00:35:32,000 --> 00:35:36,000 and one of the pipes fell off the forklift onto his steel toe boot, 570 00:35:36,000 --> 00:35:39,000 and he lost the third toe on his right foot. 571 00:35:39,000 --> 00:35:45,000 So just when it seemed out for the count, this myth staggers to its feet for one final round. 572 00:35:45,000 --> 00:35:49,000 To deliver the knockout blow, it's back to the guillotine, 573 00:35:49,000 --> 00:35:52,000 and this time the boys mean business. 574 00:35:52,000 --> 00:35:57,000 They fitted the shear attachment to simulate a worst case industrial scenario. 575 00:35:57,000 --> 00:35:59,000 This is a danger zone now. 576 00:35:59,000 --> 00:36:06,000 With the rig at maximum height and weight, this will be the ultimate test of a steel capped boot. 577 00:36:06,000 --> 00:36:09,000 In three, two, one. 578 00:36:12,000 --> 00:36:14,000 Dude! 579 00:36:15,000 --> 00:36:19,000 Oh, it slid right off the steel, because it landed right where I placed it, 580 00:36:19,000 --> 00:36:24,000 but it slid off the steel toe and sliced the entire shoe in half. 581 00:36:26,000 --> 00:36:33,000 Does that mean that because of the steel toe, you're actually going to lose slightly more of your toes? 582 00:36:33,000 --> 00:36:40,000 But it's not the steel toe that's actually cutting your foot off, it's just providing a ramp. 583 00:36:40,000 --> 00:36:44,000 It's an intriguing result, which prompts a second take. 584 00:36:44,000 --> 00:36:47,000 In three, two, one. 585 00:36:52,000 --> 00:36:55,000 Well, did that also glance off the steel toe? 586 00:36:55,000 --> 00:36:57,000 That did exactly that. 587 00:36:57,000 --> 00:36:59,000 Even though we put it way farther out. 588 00:36:59,000 --> 00:37:02,000 Yeah, we couldn't have really placed it any differently. 589 00:37:02,000 --> 00:37:08,000 This is probably the closest thing that we've seen to the circumstances that the myths say 590 00:37:08,000 --> 00:37:12,000 or that could well have been involved with amputating the toes. 591 00:37:19,000 --> 00:37:21,000 I'm really glad we took this as far as we did. 592 00:37:21,000 --> 00:37:26,000 We finally did get an amputation, and we showed that if you're wearing steel toe boots, 593 00:37:26,000 --> 00:37:30,000 there is a circumstance under which you can lose your toes. 594 00:37:30,000 --> 00:37:35,000 Of course, it involves dropping massive amounts of weights with a tiny blade at the end on them. 595 00:37:35,000 --> 00:37:39,000 Yeah, nevertheless, I mean, given the same set of circumstances, 596 00:37:39,000 --> 00:37:46,000 you will always have more damage to your feet if you're not wearing steel tips than if you are wearing them. 597 00:37:46,000 --> 00:37:48,000 It's just across the board. 598 00:37:48,000 --> 00:37:51,000 Absolutely. This myth is busted completely. 599 00:37:55,000 --> 00:37:58,000 It's launch day for the myth of the bottle rocket, 600 00:37:58,000 --> 00:38:04,000 and Grant and Carrie arrive at their very own Cape Canaveral, pier 50, San Francisco. 601 00:38:04,000 --> 00:38:07,000 The day has finally come for the launching. 602 00:38:07,000 --> 00:38:10,000 I have to say I have a few butterflies in my stomach. 603 00:38:10,000 --> 00:38:12,000 Oh my God, this is insane. 604 00:38:12,000 --> 00:38:16,000 The launch profile entails splashdown in the bay, 605 00:38:16,000 --> 00:38:20,000 which has our bottle rocketeer asking the obvious question. 606 00:38:20,000 --> 00:38:22,000 How am I going to get out? 607 00:38:22,000 --> 00:38:29,000 There's going to be a boat and a jet ski to fish you out, I mean to rescue you, I mean to get you. 608 00:38:30,000 --> 00:38:35,000 Joking aside, Carrie's well-being is paramount, 609 00:38:35,000 --> 00:38:42,000 and Simulate Jane is on hand in case the safety officers from medics at the movies veto launching a human. 610 00:38:43,000 --> 00:38:46,000 Carver Patrol arrive with a splash. 611 00:38:46,000 --> 00:38:47,000 Woo hoo hoo! 612 00:38:47,000 --> 00:38:49,000 How action movie is this? 613 00:38:49,000 --> 00:38:56,000 It may look Hollywood, but any injuries sustained will be real, so Carrie is taking no chances. 614 00:38:57,000 --> 00:39:01,000 I might have to launch the Simulate a few times before I can actually commit to this, 615 00:39:01,000 --> 00:39:03,000 because it's looking somewhat dangerous. 616 00:39:04,000 --> 00:39:10,000 The Simulate's knees are giving way at the prospect, so they shore her up with an aluminum frame. 617 00:39:10,000 --> 00:39:12,000 It looks like a garter for a robot. 618 00:39:12,000 --> 00:39:17,000 And with no time for swimming lessons, Carrie applies the final touches. 619 00:39:17,000 --> 00:39:19,000 As the gantry is moved into place, 620 00:39:19,000 --> 00:39:20,000 Yeah, it's perfect. 621 00:39:20,000 --> 00:39:25,000 Tori arrives direct from the late shift and gets straight into the spirit of the occasion. 622 00:39:27,000 --> 00:39:29,000 Okay, we're gonna get you. 623 00:39:29,000 --> 00:39:31,000 Get it tonic, what do you want? 624 00:39:32,000 --> 00:39:34,000 Rocket grabbery, you got it. 625 00:39:34,000 --> 00:39:38,000 When Tori's finished fueling, it's time to assemble the rocket. 626 00:39:38,000 --> 00:39:42,000 First, load the 15 motors onto the release platform. 627 00:39:42,000 --> 00:39:43,000 Alright, that's it. 628 00:39:43,000 --> 00:39:45,000 And secure them tightly. 629 00:39:45,000 --> 00:39:48,000 Don't be shy, I've got lots of tape. 630 00:39:48,000 --> 00:39:50,000 Beef up the safety measures, 631 00:39:50,000 --> 00:39:52,000 and install the pilot. 632 00:39:53,000 --> 00:39:56,000 Mount the bottle rocket on the launch pad. 633 00:39:56,000 --> 00:39:58,000 Good, beauty. 634 00:39:58,000 --> 00:40:00,000 And have a joke at Carrie's expense. 635 00:40:00,000 --> 00:40:02,000 Eventually another dummy's gonna get in there. 636 00:40:02,000 --> 00:40:04,000 I'm kidding, come on, I'm joking. 637 00:40:04,000 --> 00:40:06,000 Carrie's too nervous, no more joking. 638 00:40:06,000 --> 00:40:08,000 Let's grim up. 639 00:40:08,000 --> 00:40:11,000 And finally, prime the engines. 640 00:40:12,000 --> 00:40:14,000 Can't believe you have to do these one by one. 641 00:40:15,000 --> 00:40:17,000 How many more to go, Yamahara? 642 00:40:17,000 --> 00:40:18,000 Four. 643 00:40:18,000 --> 00:40:21,000 I'm glad that there's four, because I just didn't want this to be over yet. 644 00:40:22,000 --> 00:40:24,000 Everything's set for launch. 645 00:40:24,000 --> 00:40:27,000 So inevitably the rocket springs a leak. 646 00:40:27,000 --> 00:40:29,000 Okay, Carrie, pressure in the middle now. 647 00:40:29,000 --> 00:40:30,000 We don't like hand on it. 648 00:40:30,000 --> 00:40:32,000 This is the one that's hemorrhaging. 649 00:40:32,000 --> 00:40:34,000 I know, there's nothing more I can do. 650 00:40:34,000 --> 00:40:37,000 While the Grand Crew make frantic repairs, 651 00:40:37,000 --> 00:40:39,000 Tori plays for time. 652 00:40:39,000 --> 00:40:41,000 There's no problem. 653 00:40:41,000 --> 00:40:44,000 Grant brings the leak under control. 654 00:40:44,000 --> 00:40:49,000 And it's pump-like mad to bring the last bottles up to 90 psi. 655 00:40:49,000 --> 00:40:51,000 Last one. 656 00:40:51,000 --> 00:40:53,000 Okay, everybody get ready, this is the last one. 657 00:40:53,000 --> 00:40:55,000 The distance markers are all in place. 658 00:40:55,000 --> 00:40:57,000 And if there's anything to go by, 659 00:40:57,000 --> 00:41:00,000 someone's expecting a long-haul flight. 660 00:41:00,000 --> 00:41:02,000 We're about to do the 15 bottle test. 661 00:41:02,000 --> 00:41:05,000 I saw it launch yesterday, and it's pretty powerful. 662 00:41:05,000 --> 00:41:07,000 I think she's just gonna go straight out there, 663 00:41:07,000 --> 00:41:09,000 go out about 20 feet up, 664 00:41:09,000 --> 00:41:13,000 and continue on total path about 40 feet. 665 00:41:13,000 --> 00:41:16,000 It might just like swing up over her head, 666 00:41:16,000 --> 00:41:18,000 and just like spin her into the water. 667 00:41:18,000 --> 00:41:19,000 She's not gonna pinwheel, 668 00:41:19,000 --> 00:41:21,000 I think she's just gonna go straight. 669 00:41:21,000 --> 00:41:24,000 This is probably more important for me than anybody else, 670 00:41:24,000 --> 00:41:26,000 because this right here is gonna tell me 671 00:41:26,000 --> 00:41:28,000 whether I want to get in this or not. 672 00:41:28,000 --> 00:41:30,000 So I'm crossing my fingers. 673 00:41:30,000 --> 00:41:34,000 Grant attaches the pneumatic trigger release. 674 00:41:34,000 --> 00:41:38,000 It's zero hour for Jane the Simulate. 675 00:41:38,000 --> 00:41:40,000 You guys ready? We've got to pull the blocks out. 676 00:41:40,000 --> 00:41:42,000 Okay. 677 00:41:44,000 --> 00:41:46,000 Okay, high speed ready. 678 00:41:47,000 --> 00:41:51,000 Three, two, one! 679 00:41:54,000 --> 00:41:57,000 Hard to tell who flew furthest, Grant or Jane. 680 00:41:57,000 --> 00:42:01,000 Good job, buddy. That looked great. Where'd she go? 681 00:42:01,000 --> 00:42:03,000 Straight down, apparently. 682 00:42:03,000 --> 00:42:05,000 Something malfunctioned, 683 00:42:05,000 --> 00:42:08,000 and the high-speed camera should hold the answer. 684 00:42:08,000 --> 00:42:11,000 Wow! 685 00:42:11,000 --> 00:42:14,000 It looked like it just shot right off her back. 686 00:42:14,000 --> 00:42:17,000 There was like one tie that held on. 687 00:42:17,000 --> 00:42:18,000 I guess those straps. 688 00:42:18,000 --> 00:42:20,000 While the team discusses harness failure, 689 00:42:20,000 --> 00:42:23,000 the safety expert catalogues pilot injuries. 690 00:42:23,000 --> 00:42:27,000 Anything from abrasions, lacerations to sprains, strains, 691 00:42:27,000 --> 00:42:33,000 possible dislocated bones, possibly broken bones, 692 00:42:33,000 --> 00:42:35,000 possibly concussions, head, neck, back injuries 693 00:42:35,000 --> 00:42:37,000 are always the most serious. 694 00:42:37,000 --> 00:42:39,000 Well, I don't want that to happen to me, 695 00:42:39,000 --> 00:42:41,000 so I think we need another test with the dummy 696 00:42:41,000 --> 00:42:42,000 and get it right before you put me in the rig. 697 00:42:42,000 --> 00:42:45,000 After the trial run, the jury's still out. 698 00:42:45,000 --> 00:42:48,000 The bottle rocket has significant thrust. 699 00:42:50,000 --> 00:42:53,000 But can that force be harnessed safely? 700 00:42:53,000 --> 00:42:55,000 Time for another launch. 701 00:42:55,000 --> 00:42:56,000 Let's go to lunch. 702 00:43:00,000 --> 00:43:03,000 Jane, the simulate's maiden bottle rocket flight 703 00:43:03,000 --> 00:43:05,000 was less than a success. 704 00:43:07,000 --> 00:43:10,000 Without a safe test launch, carry will be grounded, 705 00:43:10,000 --> 00:43:12,000 and the myth busted. 706 00:43:12,000 --> 00:43:15,000 I have a lot of doubts about the last test. 707 00:43:15,000 --> 00:43:17,000 I just don't know what's really going to happen, 708 00:43:17,000 --> 00:43:20,000 and unless we can get this to work in a way 709 00:43:20,000 --> 00:43:23,000 that's a little bit safer, I just, I don't want to get on it. 710 00:43:23,000 --> 00:43:26,000 The team resets, and to avoid backflips, 711 00:43:26,000 --> 00:43:29,000 Jane is positioned higher on the rocket. 712 00:43:29,000 --> 00:43:32,000 The safety harness is given careful attention, 713 00:43:32,000 --> 00:43:35,000 but carries less than impressed with Tori's tether. 714 00:43:35,000 --> 00:43:37,000 This is supposed to be me. 715 00:43:37,000 --> 00:43:40,000 We cannot use this particular method on me. 716 00:43:41,000 --> 00:43:42,000 Let's see why not. 717 00:43:42,000 --> 00:43:44,000 Looks like it's working pretty good. 718 00:43:44,000 --> 00:43:47,000 Passenger comfort will come as standard on a later model. 719 00:43:48,000 --> 00:43:51,000 Get three, two, one. 720 00:43:52,000 --> 00:43:54,000 Oh. 721 00:43:55,000 --> 00:43:58,000 Maybe I shouldn't stand right behind it next time. 722 00:43:59,000 --> 00:44:00,000 That didn't look that bad. 723 00:44:00,000 --> 00:44:01,000 That was cool. 724 00:44:01,000 --> 00:44:03,000 That was just a backflip. 725 00:44:03,000 --> 00:44:04,000 Just a backflip? 726 00:44:04,000 --> 00:44:08,000 Yeah, a rocket-assisted 20-foot-high backflip. 727 00:44:08,000 --> 00:44:09,000 Oh. 728 00:44:10,000 --> 00:44:11,000 That's not very ballistic. 729 00:44:11,000 --> 00:44:13,000 It looks a lot of film. 730 00:44:13,000 --> 00:44:15,000 Oh my God, looks just going for a nose dive. 731 00:44:15,000 --> 00:44:17,000 That's a headshot right into the water. 732 00:44:17,000 --> 00:44:18,000 Oh. 733 00:44:18,000 --> 00:44:21,000 It looks a blast, but what's the official word? 734 00:44:21,000 --> 00:44:23,000 After the two experiments I've seen, 735 00:44:23,000 --> 00:44:25,000 I would not let you get on that. 736 00:44:25,000 --> 00:44:26,000 No way. 737 00:44:27,000 --> 00:44:28,000 See, Dave's pulling rank. 738 00:44:28,000 --> 00:44:29,000 I'm not getting on it. 739 00:44:30,000 --> 00:44:31,000 You're off the hook. 740 00:44:31,000 --> 00:44:34,000 I didn't want to chicken out, but I did not sleep last night. 741 00:44:34,000 --> 00:44:37,000 I kept thinking I was going to break my neck on this thing. 742 00:44:37,000 --> 00:44:38,000 Well, I'm a little bummed, though, 743 00:44:38,000 --> 00:44:40,000 that we're not going to actually launch a person on it. 744 00:44:40,000 --> 00:44:42,000 I mean, looking at the high speed, that looked fun. 745 00:44:42,000 --> 00:44:44,000 It didn't look that dangerous, 746 00:44:44,000 --> 00:44:47,000 but, you know, I guess we're all worried about breaking necks 747 00:44:47,000 --> 00:44:49,000 and people getting paralyzed. 748 00:44:49,000 --> 00:44:50,000 I'm really, really relieved. 749 00:44:50,000 --> 00:44:52,000 I don't have to do it. 750 00:44:52,000 --> 00:44:57,000 So no aerial acrobatics or a trip to the chiropractor for Carrie. 751 00:44:57,000 --> 00:44:59,000 But what about the myth? 752 00:44:59,000 --> 00:45:03,000 This myth is about strapping 15 soda bottles to a person's back 753 00:45:03,000 --> 00:45:06,000 and having them fly in a ballistic trajectory. 754 00:45:06,000 --> 00:45:09,000 Based on what we've seen here, it's totally busted. 755 00:45:09,000 --> 00:45:11,000 And busted on two counts. 756 00:45:11,000 --> 00:45:15,000 First, neither the height nor distance match those of the myth. 757 00:45:15,000 --> 00:45:21,000 And second, this rig isn't close to being safe for a human passenger. 758 00:45:21,000 --> 00:45:25,000 Oh! This being myth busters, now that the myth is busted, 759 00:45:25,000 --> 00:45:27,000 we need to ramp this up. 760 00:45:27,000 --> 00:45:29,000 So we're going to go to Torrey's 50 bottle rig. 761 00:45:29,000 --> 00:45:32,000 I just finished it maybe a few hours ago. 762 00:45:32,000 --> 00:45:36,000 I stayed up till two in the morning last night trying to get it finished. 763 00:45:36,000 --> 00:45:40,000 So I haven't actually tested it, so I don't know if it's going to work. 764 00:45:40,000 --> 00:45:42,000 I'm hoping. I'm very hopeful. 765 00:45:42,000 --> 00:45:44,000 With Carrie off the hook, 766 00:45:44,000 --> 00:45:46,000 I'm going to go to the chiropractor. 767 00:45:46,000 --> 00:45:48,000 I'm going to go to the chiropractor. 768 00:45:48,000 --> 00:45:50,000 I'm very hopeful. 769 00:45:50,000 --> 00:45:52,000 With Carrie off the hook, 770 00:45:52,000 --> 00:45:56,000 Jane's safety is now in Torrey's sleep deprived hands. 771 00:45:56,000 --> 00:46:00,000 I like to call this my safety friend. 772 00:46:00,000 --> 00:46:02,000 This is what happens when I don't get enough sleep. 773 00:46:02,000 --> 00:46:05,000 All 50 bottles are filled with one liter of water, 774 00:46:05,000 --> 00:46:08,000 then loaded onto the O-rings for a pressure test. 775 00:46:08,000 --> 00:46:11,000 All right, the moment of truth. 776 00:46:11,000 --> 00:46:14,000 I don't hear any hissing. 777 00:46:14,000 --> 00:46:16,000 I don't either. That's a good sign. 778 00:46:16,000 --> 00:46:18,000 A word of warning. 779 00:46:18,000 --> 00:46:22,000 Simultaneous triggering, as seen on 360 swing set, 780 00:46:22,000 --> 00:46:24,000 is a very tall order. 781 00:46:31,000 --> 00:46:35,000 With 50 rockets to trigger, there's plenty of scope for failure. 782 00:46:35,000 --> 00:46:36,000 Get on. 783 00:46:36,000 --> 00:46:40,000 Which, on this show, is par for the course. 784 00:46:40,000 --> 00:46:43,000 This is 50 bottle blast off. You guys ready? 785 00:46:43,000 --> 00:46:44,000 Ready. 786 00:46:44,000 --> 00:46:46,000 Opening the valve. 787 00:46:48,000 --> 00:46:50,000 All right, pulling out the safety blocks. 788 00:46:51,000 --> 00:46:52,000 Okay. 789 00:46:52,000 --> 00:46:55,000 Three, two, one. 790 00:46:59,000 --> 00:47:01,000 What do we do? 791 00:47:09,000 --> 00:47:11,000 That was great. 792 00:47:11,000 --> 00:47:12,000 Wow. 793 00:47:14,000 --> 00:47:16,000 Well, something happened. 794 00:47:16,000 --> 00:47:19,000 It didn't work exactly the way I thought it would, 795 00:47:19,000 --> 00:47:22,000 but hey, no, it was perfect. 796 00:47:22,000 --> 00:47:25,000 Did you see my trigger mechanism? 797 00:47:27,000 --> 00:47:29,000 That was pretty cool. 798 00:47:29,000 --> 00:47:31,000 No backflips this time. 799 00:47:31,000 --> 00:47:34,000 Just some crash test dummy yoga. 800 00:47:34,000 --> 00:47:35,000 But what went wrong? 801 00:47:35,000 --> 00:47:38,000 It might just be the collective, because look out. 802 00:47:38,000 --> 00:47:40,000 Yeah, these guys are tight. 803 00:47:40,000 --> 00:47:42,000 Okay, how do you like my O-rings now? 804 00:47:45,000 --> 00:47:49,000 The high angle footage shows the rockets on the left releasing cleanly, 805 00:47:49,000 --> 00:47:53,000 but on the right, the O-rings hold them back. 806 00:47:53,000 --> 00:47:55,000 Sticky O-rings, eh? 807 00:47:55,000 --> 00:47:58,000 Tired to put Jamie's shop motto into action. 808 00:47:58,000 --> 00:48:00,000 When in doubt, lubricate. 809 00:48:00,000 --> 00:48:02,000 So we had two problems with our last launch. 810 00:48:02,000 --> 00:48:04,000 One, it didn't release cleanly. 811 00:48:04,000 --> 00:48:07,000 We dealt with that by lubing up, and two, 812 00:48:07,000 --> 00:48:10,000 the bottom bottles filled up with water because of our angle. 813 00:48:10,000 --> 00:48:13,000 So what we're going to do now is have a more flat launch. 814 00:48:13,000 --> 00:48:15,000 We've got our lube, and we're ready to go. 815 00:48:16,000 --> 00:48:21,000 Lucky last, the team has one more chance to get Jane airborne. 816 00:48:21,000 --> 00:48:25,000 It seems like more soda bottles should mean more thrust. 817 00:48:25,000 --> 00:48:28,000 Okay, I'm pressurizing to 100. You guys ready? 818 00:48:28,000 --> 00:48:29,000 In one, in one. 819 00:48:29,000 --> 00:48:32,000 In three, two, one. 820 00:48:34,000 --> 00:48:35,000 Hang on. 821 00:48:40,000 --> 00:48:42,000 I wouldn't have been scared of doing that. 822 00:48:44,000 --> 00:48:45,000 Well... 823 00:48:45,000 --> 00:48:47,000 It wasn't impressive, but it sure was fun. 824 00:48:47,000 --> 00:48:54,000 I just do not see soda bottles and water and air being any means of a jet pack whatsoever. 825 00:48:54,000 --> 00:48:59,000 Yeah, it seems like we should have more soda bottles that mean more thrust. 826 00:48:59,000 --> 00:49:01,000 More bottles means more complications, 827 00:49:01,000 --> 00:49:07,000 and simultaneous release is one of our hugest problems in any experience we do. 828 00:49:07,000 --> 00:49:10,000 You know, we didn't get her too high, but... 829 00:49:10,000 --> 00:49:11,000 I'm still happy. 830 00:49:11,000 --> 00:49:14,000 I would say we can call this one busted. 831 00:49:14,000 --> 00:49:15,000 And call it a day. 832 00:49:15,000 --> 00:49:16,000 Yeah, busted. 833 00:49:16,000 --> 00:49:17,000 Let's get out of here. 834 00:49:17,000 --> 00:49:18,000 We're only going to bed. 835 00:49:18,000 --> 00:49:19,000 I'm tired. 836 00:49:41,000 --> 00:49:52,000 Thanks for watching.