1 00:00:00,000 --> 00:00:03,000 Do not try what you're about to see at home. 2 00:00:03,000 --> 00:00:09,000 We consult with experts, we take every precaution and we have years of experience in dangerous situations. 3 00:00:30,000 --> 00:00:33,000 We have duct tape all for the glory. 4 00:00:33,000 --> 00:00:37,000 Meanwhile, Cary, Grant and Tori are hitting the road. 5 00:00:37,000 --> 00:00:39,000 It took you so long. 6 00:00:39,000 --> 00:00:43,000 To find out if duct tape can keep a car from going to pieces. 7 00:00:43,000 --> 00:00:45,000 He's a mad woman. 8 00:00:45,000 --> 00:00:47,000 Then it's a race to the finish line. 9 00:00:47,000 --> 00:00:48,000 Last lap! 10 00:00:48,000 --> 00:00:54,000 To see if the sticky stuff we survive can stop a speeding car in its tracks. 11 00:00:54,000 --> 00:00:59,000 Who are the misbusters? 12 00:00:59,000 --> 00:01:00,000 Adam Savage. 13 00:01:00,000 --> 00:01:02,000 It's scientific! 14 00:01:02,000 --> 00:01:03,000 And Jamie Hideman. 15 00:01:03,000 --> 00:01:05,000 I call him my little pop gun. 16 00:01:05,000 --> 00:01:09,000 Between them more than 30 years of special effects experience. 17 00:01:09,000 --> 00:01:12,000 Joining them, Cary Byron. 18 00:01:12,000 --> 00:01:14,000 Explosives in electricity. 19 00:01:14,000 --> 00:01:16,000 Tori Bellachy. 20 00:01:16,000 --> 00:01:18,000 We're popping popcorn with lasers. 21 00:01:18,000 --> 00:01:19,000 And Grant Imahara. 22 00:01:19,000 --> 00:01:20,000 I'm sorry! 23 00:01:20,000 --> 00:01:22,000 They don't just tell them it. 24 00:01:22,000 --> 00:01:25,000 They put them to the test. 25 00:01:30,000 --> 00:01:35,000 Oh no. 26 00:01:35,000 --> 00:01:37,000 Oh yes. 27 00:01:37,000 --> 00:01:39,000 That can only mean one thing. 28 00:01:39,000 --> 00:01:40,000 Yes it can. 29 00:01:40,000 --> 00:01:46,000 It means back by popular demand it's time for the duct tape special number two. 30 00:01:46,000 --> 00:01:50,000 It was one of our most popular shows. 31 00:01:50,000 --> 00:01:52,000 I'm giving it all we got, captain. 32 00:01:52,000 --> 00:01:57,000 When the mythbusters paid homage to duct tape, fans went into a frenzy. 33 00:01:58,000 --> 00:01:59,000 More duct tape. 34 00:01:59,000 --> 00:02:00,000 Love it. 35 00:02:00,000 --> 00:02:05,000 Because you asked for it, they're putting more duct tape tales to the ultimate test. 36 00:02:05,000 --> 00:02:07,000 Oh it's for real. 37 00:02:10,000 --> 00:02:12,000 So what do you have in mind? 38 00:02:12,000 --> 00:02:20,000 I see in my mind's eye a chasm, wide and deep, spanned only by duct tape. 39 00:02:20,000 --> 00:02:21,000 A duct tape bridge. 40 00:02:21,000 --> 00:02:24,000 That you and I can walk across. 41 00:02:24,000 --> 00:02:25,000 Sounds dangerous. 42 00:02:25,000 --> 00:02:26,000 Exactly. 43 00:02:27,000 --> 00:02:33,000 A duct tape dingy's one thing, but using duct tape to replace steel and stone? 44 00:02:33,000 --> 00:02:41,000 The tape's mythical adhesive and low bearing capabilities are about to be stretched to the absolute limit. 45 00:02:41,000 --> 00:02:44,000 But we'll cross that bridge when we come to it. 46 00:02:44,000 --> 00:02:50,000 You know before we decide on a final design, I think we should run duct tape through its paces in the shop downstairs. 47 00:02:50,000 --> 00:02:53,000 It's a series of bench tests, if you will. 48 00:02:53,000 --> 00:02:54,000 Okay. 49 00:02:57,000 --> 00:03:02,000 Look, obviously we're already pretty familiar with the awesome power of duct tape. 50 00:03:02,000 --> 00:03:06,000 But if we're going to make a bridge out of this stuff that safely suspends us above a chasm, 51 00:03:06,000 --> 00:03:09,000 we're going to have to determine a couple of things right up front. 52 00:03:09,000 --> 00:03:12,000 One, how much are we going to need to support our body weight? 53 00:03:12,000 --> 00:03:17,000 Two, how are we going to anchor the duct tape to the sides of that chasm? 54 00:03:17,000 --> 00:03:19,000 That's what we're about to test and figure out. 55 00:03:23,000 --> 00:03:24,000 So where do you want to begin? 56 00:03:24,000 --> 00:03:28,000 Let's say we stretch out a single strand and see what it takes to break it. 57 00:03:28,000 --> 00:03:30,000 Sounds good. Let's do it. 58 00:03:30,000 --> 00:03:33,000 Step one, a single strand of strength test. 59 00:03:33,000 --> 00:03:37,000 Today the role of our strength testing device will be played by a digital force cage. 60 00:03:37,000 --> 00:03:44,000 I will pull on the duct tape with this hook and right here it will tell me how many pounds of force it takes before it breaks. 61 00:03:47,000 --> 00:03:49,000 Ten, twelve, thirteen. 62 00:03:49,000 --> 00:03:51,000 This is killing me. 63 00:03:52,000 --> 00:03:55,000 I don't mean it's hurting, it's just the indisimation. 64 00:03:56,000 --> 00:03:57,000 Sixty-three. 65 00:03:59,000 --> 00:04:02,000 Sixty-seven point three pounds of force to break it. 66 00:04:02,000 --> 00:04:03,000 Wow. 67 00:04:03,000 --> 00:04:05,000 That's more than I would have thought. 68 00:04:05,000 --> 00:04:06,000 Me too. 69 00:04:06,000 --> 00:04:10,000 They might be well acquainted with duct tape's awesome qualities, 70 00:04:10,000 --> 00:04:13,000 but it still has the power to surprise. 71 00:04:13,000 --> 00:04:16,000 I didn't realize the duct tape was going to be that strong. 72 00:04:16,000 --> 00:04:26,000 That means that we could in fact build a bridge in theory with like three or four strips of duct tape and nothing else. 73 00:04:27,000 --> 00:04:32,000 That little laugh means Jamie's already plotting to put that theory to the test. 74 00:04:33,000 --> 00:04:36,000 I want to stretch four across and sit on it. 75 00:04:36,000 --> 00:04:37,000 And sit on it. 76 00:04:37,000 --> 00:04:38,000 Yeah. 77 00:04:38,000 --> 00:04:39,000 Okay. 78 00:04:39,000 --> 00:04:45,000 One strand snaps at sixty-seven pounds, so four strands should hold a one hundred and eighty pound Heinemann, right? 79 00:04:46,000 --> 00:04:48,000 You ready to sit on this? 80 00:04:48,000 --> 00:04:49,000 I am. 81 00:04:50,000 --> 00:04:51,000 Alright, go for it. 82 00:04:53,000 --> 00:04:55,000 Slow down, slow down. 83 00:04:56,000 --> 00:04:57,000 So you're hanging? 84 00:04:57,000 --> 00:04:58,000 I am. 85 00:04:58,000 --> 00:05:00,000 I would say I'm off the ground. 86 00:05:00,000 --> 00:05:02,000 That's pretty stunning. 87 00:05:02,000 --> 00:05:09,000 With a combined load bearing capacity of more than two hundred and sixty pounds, the four strands support Jamie. 88 00:05:09,000 --> 00:05:12,000 But they're drooping more than his mustache. 89 00:05:12,000 --> 00:05:14,000 You're drooping like six feet over thirty feet. 90 00:05:14,000 --> 00:05:16,000 That's quite a bit. 91 00:05:16,000 --> 00:05:22,000 Yep, it's supporting me, but I have to say four pieces of duct tape does not a bridge make. 92 00:05:23,000 --> 00:05:29,000 We're now going to try a strand of eight pieces of duct tape and see if we get less droop. 93 00:05:29,000 --> 00:05:33,000 We'll doubling the amount of tape have the droop factor. 94 00:05:33,000 --> 00:05:35,000 You ready for us sitting on eight pieces? 95 00:05:35,000 --> 00:05:36,000 I'm ready. 96 00:05:36,000 --> 00:05:43,000 With Jamie sitting pretty on his perch, Adam runs a tape over the tape and the news isn't good. 97 00:05:43,000 --> 00:05:45,000 Four feet of droop instead of five feet of droop. 98 00:05:45,000 --> 00:05:53,000 You would think that that doubling of the quantity of duct tape would, what, cut the amount of droop in half, but it didn't. 99 00:05:53,000 --> 00:05:57,000 Hopes of a successful bridge are second until Adam hits on an idea. 100 00:05:57,000 --> 00:06:03,000 He lays five eight layer strands side by side, then weaves a little magic. 101 00:06:03,000 --> 00:06:12,000 I'm trying to tease out some structural qualities in duct tape that will eventually yield for me, this is my goal, a bridge that I can actually walk on. 102 00:06:12,000 --> 00:06:16,000 And it seems they might have finally found their footing. 103 00:06:16,000 --> 00:06:18,000 It doesn't feel that bad. You want to try it? 104 00:06:18,000 --> 00:06:20,000 No, I can see. 105 00:06:20,000 --> 00:06:26,000 With his weight distributed across all five strands, the extreme sag might be solved. 106 00:06:26,000 --> 00:06:30,000 Yeah, it looks good. With handrails, you could walk right across this thing. 107 00:06:30,000 --> 00:06:32,000 And with five of those, you've got a good safety factor. 108 00:06:32,000 --> 00:06:37,000 This stuff is amazing. You know, we might just be able to build a bridge out of this. 109 00:06:37,000 --> 00:06:39,000 I think you're right. 110 00:06:39,000 --> 00:06:41,000 Look, ma, no hands. 111 00:06:43,000 --> 00:06:51,000 All right, so last time we built a cannon at a duct tape, what are we doing this time? 112 00:06:51,000 --> 00:06:58,000 So along with road flares, jumper cables, devices to smash out your windows, there's one more very important tool you should be carrying along in your car. 113 00:06:58,000 --> 00:07:00,000 Duct tape. 114 00:07:00,000 --> 00:07:05,000 Yeah, sure. If you get into a minor fender bender, you could use it to hold things together until you get to the mechanic. 115 00:07:05,000 --> 00:07:06,000 Exactly. 116 00:07:06,000 --> 00:07:09,000 Now, I hate to ruin your party, but that's actually not a myth. It works. 117 00:07:09,000 --> 00:07:12,000 I mean, I've used duct tape to fix my car in the past. 118 00:07:12,000 --> 00:07:14,000 Well, I think the myth lies in the extreme. 119 00:07:14,000 --> 00:07:16,000 Just what are you getting at? 120 00:07:16,000 --> 00:07:18,000 I have some plans for you guys. 121 00:07:21,000 --> 00:07:26,000 Everyone knows a few strips of duct tape can mend a minor automotive mishap. 122 00:07:26,000 --> 00:07:31,000 But can it really cure the most extreme car catastrophe? 123 00:07:32,000 --> 00:07:37,000 I have a plan. I'm going to tear apart a car and see if you can put it back together with duct tape. 124 00:07:37,000 --> 00:07:39,000 Good plan. Sounds like a challenge to me. 125 00:07:39,000 --> 00:07:41,000 Oh, you don't even know. 126 00:07:41,000 --> 00:07:49,000 Putting the car back together is only part of the challenge. It will also have to stay in one piece at top speed. 127 00:07:50,000 --> 00:07:56,000 And so yet another unfortunate automobile enters the driveway of doom. 128 00:07:56,000 --> 00:07:59,000 Alright, time to wreck this car. 129 00:08:00,000 --> 00:08:04,000 This little adventure is really going to put duct tape to the test. 130 00:08:04,000 --> 00:08:07,000 The boys are going to have to put this car back together after I destroy it. 131 00:08:07,000 --> 00:08:10,000 Now, they think it's going to be easy. 132 00:08:10,000 --> 00:08:13,000 I think they are underestimating my destructive powers. 133 00:08:14,000 --> 00:08:18,000 To really test the tape, she wants that car in as many pieces as possible. 134 00:08:18,000 --> 00:08:22,000 And has developed a disturbing appetite for destruction. 135 00:08:22,000 --> 00:08:25,000 I love destroying cars. 136 00:08:25,000 --> 00:08:27,000 Breaking glass. 137 00:08:27,000 --> 00:08:29,000 Crunching metal. 138 00:08:29,000 --> 00:08:31,000 It's awesome. 139 00:08:31,000 --> 00:08:36,000 But when it comes to raising the roof, even Carrie's dark side is defeated. 140 00:08:38,000 --> 00:08:43,000 Yeah, there's actually tools made for this. I think I have some friends that could help. 141 00:08:45,000 --> 00:08:52,000 Cue a crew of San Frans Finest, ready and willing to help Carrie complete her deranged dismantling. 142 00:08:52,000 --> 00:08:59,000 Just in time. That is awesome. What is that? 143 00:08:59,000 --> 00:09:03,000 These are hydraulic cutting tools. And this is a cutter spreader combination. 144 00:09:03,000 --> 00:09:06,000 These are cutters and we're going to use them to cut apart the vehicle. 145 00:09:06,000 --> 00:09:11,000 These tools are designed to quickly open up vehicles and free accident victims. 146 00:09:11,000 --> 00:09:14,000 This makes my tools look silly. 147 00:09:14,000 --> 00:09:20,000 Using hydraulic power, the blades bite down with more than 12,000 pounds of force. 148 00:09:21,000 --> 00:09:23,000 Woo! I love it. 149 00:09:24,000 --> 00:09:28,000 Thank you guys so much. This is really going to ruin their day. 150 00:09:28,000 --> 00:09:30,000 Great. 151 00:09:30,000 --> 00:09:31,000 Bye guys. 152 00:09:31,000 --> 00:09:32,000 Bye. 153 00:09:32,000 --> 00:09:34,000 Grant and Tori have no idea what they're in for. 154 00:09:34,000 --> 00:09:42,000 It took me a sledgehammer, a crowbar, a grinder, a saw, and four big firemen to destroy this car. 155 00:09:43,000 --> 00:09:46,000 See what they can do with duct tape to put it back together. 156 00:09:46,000 --> 00:09:47,000 Boys! 157 00:09:49,000 --> 00:09:51,000 Oh my god. 158 00:09:51,000 --> 00:09:53,000 You went to town on this car. 159 00:09:53,000 --> 00:09:55,000 It's a convertible now. 160 00:09:56,000 --> 00:09:57,000 Here are your tools. 161 00:09:58,000 --> 00:10:00,000 Oh my god. 162 00:10:01,000 --> 00:10:05,000 That is an impressive amount of damage to this car. 163 00:10:05,000 --> 00:10:13,000 I mean I've heard of duct tape being used to like, you know, tape on a bumper or fix a windshield or, you know, wrap a hose. 164 00:10:13,000 --> 00:10:16,000 But you know what? Not all at once. 165 00:10:17,000 --> 00:10:21,000 They're in a sticky situation. Carrie's done her job real well. 166 00:10:21,000 --> 00:10:24,000 Carrie has cut some key structural points in the car. 167 00:10:24,000 --> 00:10:27,000 Now it is important that we get it back to that straight because let's face it. 168 00:10:27,000 --> 00:10:32,000 This is what's going to hold the doors on, the roof on top, and keep the windshield in place. 169 00:10:32,000 --> 00:10:35,000 This is really where the duct tape is going to have to prove itself. 170 00:10:35,000 --> 00:10:42,000 Soon the air is filled with the sound of ripping duct tape and Carrie's thoughtful musings on the material. 171 00:10:42,000 --> 00:10:44,000 Duct tape is essentially made of three layers. 172 00:10:44,000 --> 00:10:48,000 We have a vinyl layer on the outside that contributes to its waterproofing qualities. 173 00:10:48,000 --> 00:10:53,000 A fabric structure that gives it its core strength and a natural rubber pressure-sensitive adhesive. 174 00:10:53,000 --> 00:10:58,000 Generally comes in black or silver and is about 1-7th-8th inches. 175 00:10:58,000 --> 00:11:03,000 It's known as duct tape, but also it can be called duct tape, hurricane tape, gaffers tape, 176 00:11:03,000 --> 00:11:06,000 100-mile-an-hour tape, tank tape, and riggers tape. 177 00:11:06,000 --> 00:11:08,000 Thus, just part of the team. 178 00:11:11,000 --> 00:11:15,000 The carved-up car is coming back to life. Much to Carrie's surprise. 179 00:11:15,000 --> 00:11:19,000 I can't believe how quickly you're getting this car together. 180 00:11:20,000 --> 00:11:23,000 Just wait. We've made a few improvements. 181 00:11:23,000 --> 00:11:25,000 Is that a window from the door? 182 00:11:25,000 --> 00:11:28,000 Yep. Don't drive too fast. 183 00:11:28,000 --> 00:11:32,000 With the rebuild complete, Carrie can't hide her admiration. 184 00:11:32,000 --> 00:11:36,000 I'm going to drive this car to give the duct tape car a true test. 185 00:11:36,000 --> 00:11:41,000 Now, the guys, if they drove the car, would drive somewhat gingerly because they don't want to see their work fail. 186 00:11:41,000 --> 00:11:43,000 They don't want to see the doors fly off. 187 00:11:43,000 --> 00:11:45,000 I, on the other hand, do. 188 00:11:45,000 --> 00:11:49,000 I'm the wrecking ball in this situation and I want to see things fly. 189 00:11:49,000 --> 00:11:57,000 Later, the highs and lows of a bouncy bridge and next can Carrie demolish the duct tape car. 190 00:12:04,000 --> 00:12:09,000 Carrie Torian Grant's duct tape car fix is ready for the ultimate test. 191 00:12:09,000 --> 00:12:12,000 Oh, sorry. I might have gotten a little carried away. Hey now. 192 00:12:12,000 --> 00:12:17,000 And so it's off to a place where the mythbusters have performed many crimes against inanity. 193 00:12:17,000 --> 00:12:19,000 What took you so long? 194 00:12:19,000 --> 00:12:23,000 What we're going to do now is set up a course here at the Alameda runway. 195 00:12:23,000 --> 00:12:35,000 Start, go through a little less curve, around a turn, hairpin turn, and then through a bump, a bump, a bump, and then a really tight turn. 196 00:12:35,000 --> 00:12:41,000 The idea here is to subject the car to as much stress as possible in the form of G-Force. 197 00:12:43,000 --> 00:12:48,000 This is duct tape car on the duct tape classic Grand Prix. 198 00:12:48,000 --> 00:12:50,000 Lap one, go ahead. 199 00:12:50,000 --> 00:12:55,000 Okay, here we go. Car number 17 with firing at the wheel into turn number one. 200 00:12:55,000 --> 00:12:56,000 Look at that. 201 00:12:56,000 --> 00:13:00,000 Carrie drives as though the accelerator is duct taped to the floor. 202 00:13:00,000 --> 00:13:04,000 Now in turn number three, Silverstone. 203 00:13:04,000 --> 00:13:09,000 Through her crazy cornering, the car is subjected to tremendous G-Force. 204 00:13:09,000 --> 00:13:13,000 The bump! Indianapolis, and back to the beginning. 205 00:13:13,000 --> 00:13:15,000 We're going to die. 206 00:13:16,000 --> 00:13:21,000 Okay, lap number four. Go, go, go, go. 207 00:13:21,000 --> 00:13:24,000 I got to say right now, the car is looking perfect. 208 00:13:24,000 --> 00:13:29,000 That's five laps so far. You are looking great. Even your hood detail is still on. 209 00:13:31,000 --> 00:13:35,000 Carrie's doing between 40 and 60 miles per hour. 210 00:13:35,000 --> 00:13:43,000 In a car with no structural integrity, everything from the roof to the doors is being held on only by tape. 211 00:13:43,000 --> 00:13:47,000 One wheel in the air. Take it easy there, Carrie. 212 00:13:51,000 --> 00:13:54,000 Last lap. And for the checkered flat. 213 00:13:54,000 --> 00:13:57,000 At least I think I would have. It's a duct tape classic. 214 00:13:59,000 --> 00:14:02,000 Why do you know that duct tape car has stayed the course? 215 00:14:02,000 --> 00:14:07,000 Alright, that was ten laps. 216 00:14:07,000 --> 00:14:11,000 Woo! You know what? It actually made it. 217 00:14:11,000 --> 00:14:12,000 We survived. 218 00:14:13,000 --> 00:14:21,000 Hairpin turns, S-curves, bumps, I go over sandbags, I get air. Still, duct tape is holding up. 219 00:14:21,000 --> 00:14:26,000 That was on flat ground. Now it's time to take it to the next level. We're sending it off-road. 220 00:14:26,000 --> 00:14:30,000 And in addition, it looks like it's going to rain. 221 00:14:31,000 --> 00:14:32,000 Let's go. 222 00:14:33,000 --> 00:14:37,000 Maybe getting off the beaten track will bring this myth unstuck. 223 00:14:38,000 --> 00:14:40,000 Mad Maxine floors it. 224 00:14:40,000 --> 00:14:42,000 Over there, turns the brush. 225 00:14:50,000 --> 00:14:56,000 After several soggy minutes thumping and bumping, this duct tape myth suddenly stalls. 226 00:14:56,000 --> 00:14:58,000 Car's dead. 227 00:15:00,000 --> 00:15:03,000 Only on MythBusters. Everyone's worried about the duct tape. 228 00:15:03,000 --> 00:15:08,000 But the only thing that's busted is the engine. The tape hasn't budged. 229 00:15:08,000 --> 00:15:13,000 The G-Force alone should have torn that thing apart. But look at that. The hood ornament did not fall off. 230 00:15:13,000 --> 00:15:17,000 I gotta say, I think we're going to have to call this one confirmed. 231 00:15:17,000 --> 00:15:19,000 Absolutely confirmed. 232 00:15:19,000 --> 00:15:21,000 Totally confirmed. 233 00:15:30,000 --> 00:15:35,000 Jamie and Adam have worked out the amount of duct tape they'll need to build a bridge. 234 00:15:35,000 --> 00:15:41,000 But before they decide on a design, they need to know exactly what space they'll be spanning. 235 00:15:41,000 --> 00:15:48,000 This is our chasm. 108 feet from this wall to that wall. It is this distance that we have to span. 236 00:15:48,000 --> 00:15:56,000 This 50-foot drop last featured in the Seasaw Saga, when it became the launching pad for a little girl. 237 00:16:01,000 --> 00:16:07,000 After sizing up the gulp-inducing gap, 238 00:16:07,000 --> 00:16:11,000 Inside is 104 and 2 inches. 239 00:16:11,000 --> 00:16:12,000 Awesome. 240 00:16:12,000 --> 00:16:16,000 They return to base for the plan to span. 241 00:16:16,000 --> 00:16:19,000 Alright. How do you want to do this thing? 242 00:16:19,000 --> 00:16:24,000 Well, I figured this is basically a rope bridge, so let's make a bunch of rope out of duct tape. 243 00:16:24,000 --> 00:16:28,000 Okay, I can see that. We make a bunch of ropey strands. 244 00:16:28,000 --> 00:16:31,000 We could bind a bunch of them together to make the floor. 245 00:16:31,000 --> 00:16:37,000 And then another couple of probably thick strands for a railing. That would actually be pretty stable. 246 00:16:37,000 --> 00:16:42,000 And then we can have some big ones along the side that are stretched top to make it stable. 247 00:16:42,000 --> 00:16:48,000 The small-scale tests showed just five strands of duct tape, eight layers thick, 248 00:16:48,000 --> 00:16:51,000 can support their weight without major droop. 249 00:16:51,000 --> 00:16:55,000 But just to be safe, they'll make their walkway ten layers thick. 250 00:16:55,000 --> 00:16:58,000 Adam's anxious to speed up the taping process. 251 00:16:58,000 --> 00:17:04,000 I'm about to construct what I hope will be the ultimate automatic duct taping machine. 252 00:17:04,000 --> 00:17:08,000 Look out. Adam's just itching to invent. 253 00:17:08,000 --> 00:17:13,000 Step one, some cylinders which fit together, Russian doll style. 254 00:17:13,000 --> 00:17:15,000 Ha ha ha! 255 00:17:15,000 --> 00:17:16,000 Alright. 256 00:17:16,000 --> 00:17:18,000 Attached to a metal strut. 257 00:17:18,000 --> 00:17:19,000 Okay. 258 00:17:19,000 --> 00:17:21,000 Which is welded to a support frame. 259 00:17:21,000 --> 00:17:22,000 It's looking great. 260 00:17:22,000 --> 00:17:29,000 Just add duct tape and, behold, the duct-o-matic, dispensing ten strands simultaneously. 261 00:17:29,000 --> 00:17:30,000 Wow. 262 00:17:30,000 --> 00:17:33,000 It's a new kind of duct tape. Duct tape cables. 263 00:17:33,000 --> 00:17:36,000 Honestly, at this point, I trust my life to that. 264 00:17:36,000 --> 00:17:38,000 I can't wait to show this to Jamie. 265 00:17:38,000 --> 00:17:41,000 He's going to be like, oh, it's a little over a labyrinth. 266 00:17:41,000 --> 00:17:43,000 Don't you think? 267 00:17:43,000 --> 00:17:48,000 Hey, check it out. My ten-roll single-pull duct tape cable maker. 268 00:17:48,000 --> 00:17:54,000 Now that seems to work. I mean, a lot of different ways you could do it, but six to one-half dozen the other, huh? 269 00:17:54,000 --> 00:17:55,000 Yeah. 270 00:17:56,000 --> 00:18:03,000 With Adam basking in Jamie's effusive admiration, they measure out the required distance. 271 00:18:03,000 --> 00:18:05,000 Okay, that's 104 feet to right here. 272 00:18:05,000 --> 00:18:10,000 And get down to some serious bridge building, starting with the floor. 273 00:18:10,000 --> 00:18:13,000 It's like we're making the world's biggest sweater. 274 00:18:13,000 --> 00:18:14,000 Yeah! 275 00:18:14,000 --> 00:18:15,000 Whoo! 276 00:18:16,000 --> 00:18:18,000 Hold on, slow down. 277 00:18:19,000 --> 00:18:21,000 That's a workout. 278 00:18:24,000 --> 00:18:26,000 Yeah! 279 00:18:26,000 --> 00:18:28,000 Best number five. Let's bind them together. 280 00:18:29,000 --> 00:18:35,000 Those five strands, each one ten layers thick, are stuck together to form a narrow walkway. 281 00:18:35,000 --> 00:18:39,000 It may not look like much, but it might just save my life. 282 00:18:39,000 --> 00:18:43,000 Next, Jamie produces a pair of handrails with a twist. 283 00:18:43,000 --> 00:18:44,000 Perfect. 284 00:18:44,000 --> 00:18:47,000 The rope-like cable should give them a good grip. 285 00:18:47,000 --> 00:18:50,000 I like the way that it seems kind of nice and old, don't you? 286 00:18:50,000 --> 00:18:52,000 Yeah, I totally agree. 287 00:18:52,000 --> 00:18:55,000 That's ten strands. 288 00:18:55,000 --> 00:19:01,000 With the walkway, handrails, and stabilizing rails complete, they're all set. 289 00:19:01,000 --> 00:19:04,000 That's the great thing about a duct tape bridge. 290 00:19:04,000 --> 00:19:06,000 It's so portable. 291 00:19:06,000 --> 00:19:08,000 Just fold and roll. 292 00:19:08,000 --> 00:19:10,000 That's not bad. Shall we go build a bridge with it? 293 00:19:10,000 --> 00:19:11,000 I think so. 294 00:19:11,000 --> 00:19:12,000 Okay. 295 00:19:17,000 --> 00:19:20,000 It's the Mythbusters second duct tape special. 296 00:19:23,000 --> 00:19:25,000 Alright, Carrie, why do you look so happy? 297 00:19:25,000 --> 00:19:27,000 Because I love the next duct tape myth. 298 00:19:27,000 --> 00:19:28,000 And what is that? 299 00:19:28,000 --> 00:19:30,000 Well, this was sent in by tons of viewers. 300 00:19:30,000 --> 00:19:33,000 It's that you can stop a car using only duct tape. 301 00:19:33,000 --> 00:19:34,000 What? 302 00:19:34,000 --> 00:19:36,000 Well, the beauty of this is there's two parts of the myth. 303 00:19:36,000 --> 00:19:39,000 The first one is based on a practical joke. 304 00:19:39,000 --> 00:19:43,000 That you can duct tape a car to a telephone pole, and it won't go anywhere. 305 00:19:43,000 --> 00:19:47,000 Technically not stopping a car, but actually preventing it from moving. 306 00:19:47,000 --> 00:19:48,000 Well, technically. 307 00:19:48,000 --> 00:19:50,000 But the second part of this is definitely stopping a car. 308 00:19:50,000 --> 00:19:54,000 It's that you can use one roll of duct tape, build a barrier, 309 00:19:54,000 --> 00:19:56,000 and catch a car going 60 miles an hour. 310 00:19:56,000 --> 00:19:58,000 Now that one I like. 311 00:19:58,000 --> 00:19:59,000 Right? 312 00:19:59,000 --> 00:20:00,000 Right. 313 00:20:00,000 --> 00:20:04,000 The first part of this myth is a prank par excellence. 314 00:20:04,000 --> 00:20:08,000 A devious dude duct tapes his friend's car to a pole. 315 00:20:08,000 --> 00:20:12,000 The victim steps on the gas, but can't escape the grip of the tape. 316 00:20:12,000 --> 00:20:16,000 We all know if we use enough duct tape, you can pretty much stick anything to a pole. 317 00:20:16,000 --> 00:20:20,000 I think the whole point of this is see how we can keep the car stationary 318 00:20:20,000 --> 00:20:22,000 with the least amount of duct tape. 319 00:20:22,000 --> 00:20:25,000 All they need for this one is a car and a convenient pole. 320 00:20:25,000 --> 00:20:27,000 We're not supposed to destroy this one. 321 00:20:27,000 --> 00:20:31,000 That is the last time we carpool together. 322 00:20:31,000 --> 00:20:38,000 Thanks to Adam's earlier test, the team already knows the breaking point of a single strand of tape. 323 00:20:38,000 --> 00:20:42,000 67.3 pounds of force to break it. 324 00:20:42,000 --> 00:20:45,000 All they have to do is determine the car's pulling power 325 00:20:45,000 --> 00:20:49,000 and work out how much tape it'll take to counter that force. 326 00:20:49,000 --> 00:20:53,000 So what we're going to do is get the force meter so that it's not going to move. 327 00:20:53,000 --> 00:20:57,000 So what we're going to do is get the force meter, strap it to the car and attach it to the pole. 328 00:20:57,000 --> 00:20:59,000 Then Grant's going to drive forward. 329 00:20:59,000 --> 00:21:02,000 At the point it stops moving forward. 330 00:21:02,000 --> 00:21:05,000 That is how much force this car pulls with. 331 00:21:05,000 --> 00:21:10,000 Okay, that's 1,300 pounds. It maxed at 1,300. 332 00:21:10,000 --> 00:21:13,000 Let's do the math. The car pulls 1,300 pounds. 333 00:21:13,000 --> 00:21:17,000 One strand of duct tape breaks at 67 pounds. 334 00:21:17,000 --> 00:21:23,000 So in theory, wrapping the car 20 times should be just enough to stop it driving away. 335 00:21:23,000 --> 00:21:25,000 I think we just go for 20 and see if it'll work. 336 00:21:25,000 --> 00:21:28,000 You know, I think this duct tape might actually stop this car. 337 00:21:28,000 --> 00:21:32,000 Tori and Carrie play a prank. For science, you understand. 338 00:21:32,000 --> 00:21:35,000 Hey you kids, what are you doing to my car? 339 00:21:37,000 --> 00:21:45,000 I have the sneaking suspicion that there are going to be prankster victims everywhere that are going to be blaming mythbusters for this myth being true. 340 00:21:45,000 --> 00:21:53,000 And so we say, in the vain hope of pranksters paying the slightest attention, please don't try this at home. 341 00:21:53,000 --> 00:21:54,000 What's this? 342 00:21:54,000 --> 00:21:56,000 In case pole falls on your head. 343 00:21:56,000 --> 00:21:59,000 Okay, Grant, time to rev up this myth. 344 00:21:59,000 --> 00:22:01,000 Wow! 345 00:22:01,000 --> 00:22:02,000 Wow! 346 00:22:02,000 --> 00:22:03,000 100 RPM. 347 00:22:03,000 --> 00:22:05,000 It's 3,000. 348 00:22:05,000 --> 00:22:10,000 We're getting a few breaks there, but it's actually holding the car in place. 349 00:22:10,000 --> 00:22:11,000 Tori! 350 00:22:12,000 --> 00:22:14,000 Woohoo! 351 00:22:16,000 --> 00:22:18,000 He stopped the car, we got you! 352 00:22:18,000 --> 00:22:19,000 Yes! 353 00:22:19,000 --> 00:22:21,000 That's incredible! 354 00:22:21,000 --> 00:22:23,000 With the smoke clears, let's talk about this. 355 00:22:23,000 --> 00:22:25,000 I think it's confirmed! 356 00:22:27,000 --> 00:22:32,000 Just five rolls of tape were enough to keep the car in its pole position. 357 00:22:32,000 --> 00:22:34,000 One strand broke, that was it. 358 00:22:34,000 --> 00:22:35,000 Look at that. 359 00:22:35,000 --> 00:22:37,000 I cannot believe this myth is confirmed. 360 00:22:37,000 --> 00:22:38,000 Confirmed! 361 00:22:38,000 --> 00:22:40,000 Woohoo! 362 00:22:40,000 --> 00:22:41,000 Yeah! 363 00:22:41,000 --> 00:22:42,000 Woohoo! 364 00:22:42,000 --> 00:22:43,000 Woohoo! 365 00:22:43,000 --> 00:22:44,000 Woohoo! 366 00:22:58,000 --> 00:23:02,000 Adam and Jamie are rolling out their duct tape bridge. 367 00:23:02,000 --> 00:23:05,000 These five strips of duct tape are our bridge. 368 00:23:05,000 --> 00:23:09,000 We've got our walkway, we've got two hand rails, and two stabilizing rails. 369 00:23:09,000 --> 00:23:11,000 Why are we hooking them up to these trucks? 370 00:23:11,000 --> 00:23:16,000 Well, we think this stuff is going to stretch, and if it stretches, it droops, and we can't have that. 371 00:23:16,000 --> 00:23:22,000 So we're going to pre-assemble it up here on the trucks and pre-stretch it before we put it across the span. 372 00:23:23,000 --> 00:23:29,000 They'll attach the walkway, hand rails, and stabilizing ropes to heavy-duty steel anchor points. 373 00:23:29,000 --> 00:23:37,000 When it comes time to walk, those frames will anchor either end of the bridge and help keep the duct tape under tension. 374 00:23:37,000 --> 00:23:41,000 Pre-stretching the duct tape should prevent any sudden sag. 375 00:23:42,000 --> 00:23:49,000 With the bridge suspended between the pickups, Adam and Jamie go through their pre-walk stretching routine. 376 00:23:51,000 --> 00:23:53,000 I think this is going to work! 377 00:23:53,000 --> 00:24:00,000 Hoping to take all the elasticity out of the duct tape before they venture out over a 50-foot drop. 378 00:24:01,000 --> 00:24:04,000 Pre-stretching this bridge is turning out to be a little trickier than we thought. 379 00:24:04,000 --> 00:24:08,000 The different components are stretching at different rates under different loads. 380 00:24:09,000 --> 00:24:11,000 We're just going to do the best we can and hope that it works. 381 00:24:16,000 --> 00:24:19,000 When they take their first few practice steps... 382 00:24:19,000 --> 00:24:21,000 That's kind of how you used to go to grade school, right? 383 00:24:24,000 --> 00:24:25,000 I don't want to do that. 384 00:24:25,000 --> 00:24:28,000 It's immediately clear they're going to need more tape. 385 00:24:28,000 --> 00:24:29,000 Oh my gosh. 386 00:24:29,000 --> 00:24:33,000 Yeah, I think we do want to add in some stringers between these things on the floor. 387 00:24:34,000 --> 00:24:38,000 Because you could be all like, whoa, good on your matamale! 388 00:24:38,000 --> 00:24:41,000 Dude, whoa, yeah, see, I... whoa! 389 00:24:50,000 --> 00:24:52,000 This is going to be terrifying. 390 00:24:53,000 --> 00:24:58,000 Duck tape crust ruts between the walkway and handrails will minimize wobble. 391 00:24:58,000 --> 00:25:03,000 And with those last-minute structural improvements, the bridge is ready to go. 392 00:25:03,000 --> 00:25:07,000 196 rolls of duct tape, almost 400 pounds of the stuff, 393 00:25:07,000 --> 00:25:11,000 and our bridge is pretty much ready to string across the chasm. 394 00:25:11,000 --> 00:25:18,000 Now, I've marked the midpoint here because, in my opinion, it's once we pass this point that I think we're home free. 395 00:25:18,000 --> 00:25:23,000 See, this point, being the farthest from both ends, is actually where this bridge could cause us the most trouble. 396 00:25:23,000 --> 00:25:28,000 It could possibly turn turtle and flip us over when we get here. 397 00:25:28,000 --> 00:25:33,000 Getting the pre-assembled bridge across the chasm is a feat in itself. 398 00:25:33,000 --> 00:25:38,000 They lower one end into the dry dock, haul it 100 feet to the other side, 399 00:25:38,000 --> 00:25:45,000 then use some heavy machinery to do some heavy lifting, all without damaging the duct tape. 400 00:25:46,000 --> 00:25:48,000 It's one thing to see it on the ground. 401 00:25:48,000 --> 00:25:52,000 Quite another, watching it go up across the chasm. 402 00:25:52,000 --> 00:25:56,000 Not many people know that Jamie has actually performed surgery with a forklift. 403 00:25:57,000 --> 00:26:06,000 With the aggro points locked down, Adam and Jamie finally bridge the gap between duct tape fantasy and duct tape reality. 404 00:26:06,000 --> 00:26:08,000 You know what that is, my friend? 405 00:26:08,000 --> 00:26:10,000 That's a bridge. 406 00:26:10,000 --> 00:26:12,000 That is a bridge. 407 00:26:18,000 --> 00:26:24,000 It's always a good day for us when we're able to use tools and materials in ways for which they were never intended. 408 00:26:24,000 --> 00:26:32,000 The duct tape bridge, well, I daresay the guy that invented this stuff had no intent whatsoever to use it to make bridges with. 409 00:26:32,000 --> 00:26:36,000 Will it work? There's only one way to find out. 410 00:26:40,000 --> 00:26:42,000 Don't try anything you've seen on the show at home. 411 00:26:42,000 --> 00:26:44,000 We are what you call experts. 412 00:26:47,000 --> 00:26:51,000 Just five rolls of duct tape can keep a car parked. 413 00:26:51,000 --> 00:26:56,000 Now, Grant, Tori and Carrie want to supersize this automotive myth. 414 00:26:56,000 --> 00:27:01,000 How crazy is this myth that you can catch a car using a single roll of duct tape? 415 00:27:01,000 --> 00:27:03,000 Yeah, that does seem a little ridiculous. 416 00:27:03,000 --> 00:27:06,000 But I mean, you saw how well it held the car together when you were driving around like a maniac. 417 00:27:06,000 --> 00:27:08,000 Maybe we just wrap it around two telephone poles. 418 00:27:08,000 --> 00:27:10,000 Versus a car going 60? 419 00:27:10,000 --> 00:27:13,000 I have seen crazier things on this show. Let's do it. 420 00:27:13,000 --> 00:27:16,000 Tori, Carrie and Grant are on the road again. 421 00:27:17,000 --> 00:27:23,000 Telephone poles are few and far between out here, so they'll use something a little more concrete. 422 00:27:23,000 --> 00:27:28,000 We're setting up K-Rail in an arrow formation. This is going to serve two purposes. 423 00:27:28,000 --> 00:27:37,000 One, it's going to hold our single roll of duct tape car catcher, as well as serve as a barrier for anything that may go out of control. 424 00:27:37,000 --> 00:27:44,000 The tape is wound around half-inch thick steel rods, forming a single strand, five layers thick. 425 00:27:45,000 --> 00:27:51,000 And at this point, this fan fable doesn't just look dubious, it looks patently ridiculous. 426 00:27:51,000 --> 00:27:52,000 And then some. 427 00:27:52,000 --> 00:27:59,000 Duct tape can do a lot of things, but stopping a car at 60 miles an hour with one roll, I seriously doubt it. 428 00:27:59,000 --> 00:28:01,000 Ready to put your life on the line for science? 429 00:28:01,000 --> 00:28:04,000 Oh, I'm ready. Do we really need helmets on? 430 00:28:04,000 --> 00:28:06,000 Yes. I'm going to go watch from a safe place. 431 00:28:08,000 --> 00:28:10,000 Okay, I'm ready. Are you in position? 432 00:28:10,000 --> 00:28:11,000 Stand by. 433 00:28:12,000 --> 00:28:15,000 Okay, this is single roll of duct tape on your go. 434 00:28:15,000 --> 00:28:17,000 Okay, here we go. 435 00:28:17,000 --> 00:28:19,000 Tori hits the gas. 436 00:28:22,000 --> 00:28:24,000 The car hits the duct tape. 437 00:28:26,000 --> 00:28:28,000 And the myth hits the mech atom. 438 00:28:28,000 --> 00:28:31,000 Okay, so maybe you didn't need the helmets. 439 00:28:31,000 --> 00:28:34,000 I didn't even get up to 60 miles an hour. That was like 40. 440 00:28:34,000 --> 00:28:35,000 Oh well. 441 00:28:35,000 --> 00:28:36,000 I can't believe it, bro. 442 00:28:36,000 --> 00:28:39,000 We couldn't stop a car with a single roll of duct tape. 443 00:28:39,000 --> 00:28:42,000 All right, well, let's do what we do on this show and supersize it. 444 00:28:42,000 --> 00:28:46,000 Yeah, but I mean, we could build a wall 10 feet thick with duct tape, and that should stop a car. 445 00:28:46,000 --> 00:28:47,000 I mean, where do we draw the line? 446 00:28:47,000 --> 00:28:51,000 Well, that's kind of totally impractical. Let's see what we could do in a day. 447 00:28:51,000 --> 00:28:53,000 I mean, maybe 100 rolls of duct tape. 448 00:28:53,000 --> 00:28:54,000 All right, sounds great. 449 00:28:54,000 --> 00:28:55,000 So this is how we're going to do it. 450 00:28:55,000 --> 00:29:03,000 We have two pipes on either side here, and we're going to wrap the duct tape around it until it's thick enough to the point where we think it's going to stop the car. 451 00:29:04,000 --> 00:29:12,000 Back at Alameda, they've got a solid wall three inches thick made from a hundred rolls of duct tape. 452 00:29:12,000 --> 00:29:15,000 Well, that is one thick wall of duct tape. 453 00:29:18,000 --> 00:29:22,000 No one's willing to drive into this duct tape barrier, so they've got a plan. 454 00:29:22,000 --> 00:29:26,000 Now, in order to get the car to hit the barrier, we're going to tow it. 455 00:29:26,000 --> 00:29:31,000 And Tori's made a tow bar that's going to keep the car going in exactly the direction we want it to go. 456 00:29:31,000 --> 00:29:37,000 Now, at the bottom of the wall, right dead center is a steel plate, and connected to that plate is a pulley. 457 00:29:37,000 --> 00:29:47,000 The tow cable is going to go through that pulley so that as we tow the car towards the barrier, it's going to want to center right on that pulley and aim right for the wall. 458 00:29:47,000 --> 00:29:51,000 And just in case the cable comes loose, the car goes AWOL. 459 00:29:51,000 --> 00:29:53,000 How I've missed you so. 460 00:29:53,000 --> 00:29:56,000 Grants brought along an old friend. 461 00:29:57,000 --> 00:30:01,000 What this radio is doing is sending a signal to a receiver on the roof. 462 00:30:01,000 --> 00:30:04,000 The receiver on the roof controls a solenoid valve down here. 463 00:30:04,000 --> 00:30:07,000 Solenoid valve provides air to this cylinder. 464 00:30:07,000 --> 00:30:14,000 Now, when I turn this off, it actually takes the foot off the brake and allows the car to roll. 465 00:30:14,000 --> 00:30:19,000 When I go safe, it deploys the brake automatically and the car stops. 466 00:30:19,000 --> 00:30:22,000 With the car under Grants control, they're good to go. 467 00:30:22,000 --> 00:30:29,000 It's got the car right here. It's running. The brakes are on. All they need to do is flip this switch and it disengages the brakes and it's ready to go. 468 00:30:29,000 --> 00:30:38,000 And at that point, the tow vehicle will hit the accelerator pulling that car down the track through the pulley system headed straight for our wall of duct tape. 469 00:30:38,000 --> 00:30:41,000 Alright, here we go. Carrying brake is off. 470 00:30:41,000 --> 00:30:45,000 He's into it in three, two, one, go. 471 00:30:45,000 --> 00:30:52,000 Here it comes. 472 00:30:52,000 --> 00:30:57,000 The pickup picks up speed. 60 miles per hour. 473 00:30:57,000 --> 00:31:02,000 The test car hurdles towards a date with duct tape destiny. 474 00:31:02,000 --> 00:31:08,000 But at the last second, the experiment hits a bit of a snag. 475 00:31:08,000 --> 00:31:15,000 Somehow, the car hit everything except the wall of duct tape. What happened? 476 00:31:15,000 --> 00:31:22,000 I thought I saw the tow cable slip off of the guide car, but it was just a car length before the K-rails. 477 00:31:22,000 --> 00:31:27,000 The cable came through so late, Grant didn't even have time to hit the brakes. 478 00:31:27,000 --> 00:31:31,000 But there is some good news. The duct tape barriers undamaged. 479 00:31:31,000 --> 00:31:34,000 So we are going to go for a ride. 480 00:31:34,000 --> 00:31:41,000 We're going to take this failure, figure out how to fix it, and we're going to try it again because we are not giving up here. 481 00:31:41,000 --> 00:31:43,000 Looking great. Right on target. 482 00:31:43,000 --> 00:31:48,000 Still ahead, more duct tape demolition. 483 00:31:48,000 --> 00:31:54,000 Carry, Tori and Grant want to see if a duct tape super barrier can stop a speeding car. 484 00:31:54,000 --> 00:31:58,000 But on their first attempt, failure won't stop. 485 00:31:59,000 --> 00:32:05,000 We lost the connection between our tow vehicle and this vehicle and it veered to the right and crashed. 486 00:32:05,000 --> 00:32:09,000 Now what we're going to do is just put a rope clip on there so it's not going to come off. 487 00:32:09,000 --> 00:32:13,000 And we've moved our breakaway line up to the tow vehicle itself. 488 00:32:13,000 --> 00:32:19,000 So if anything gets caught in the pulley, that breakaway cable will break away and everybody will be safe. 489 00:32:19,000 --> 00:32:21,000 And we're going to go for a ride. 490 00:32:21,000 --> 00:32:27,000 So if anything gets caught in the pulley, that breakaway cable will break away and everybody will be safe. 491 00:32:27,000 --> 00:32:32,000 They're not about to let rain dampen their quest for duct tape data. 492 00:32:32,000 --> 00:32:33,000 Here we go. 493 00:32:33,000 --> 00:32:39,000 The test car is soon taxing down the runway with Tori and Grant in hot pursuit. 494 00:32:39,000 --> 00:32:42,000 It's got it, it's got it, it's got it. 495 00:32:42,000 --> 00:32:53,000 That was awesome! Yeah! 496 00:32:55,000 --> 00:33:01,000 Once again, the car brought the K-Rank but it also wiped out the duct tape wall, didn't it? 497 00:33:01,000 --> 00:33:05,000 So it looks like the duct tape wall wasn't strong enough to stop the car. 498 00:33:05,000 --> 00:33:06,000 Dude, check it. 499 00:33:07,000 --> 00:33:11,000 Oh no! The wall is still together. 500 00:33:11,000 --> 00:33:13,000 I think we've got a problem. 501 00:33:13,000 --> 00:33:15,000 It just broke away from the K-Rail. 502 00:33:15,000 --> 00:33:18,000 You know what? I think we better take a look at the high speed and see what happened. 503 00:33:18,000 --> 00:33:19,000 Alright. 504 00:33:19,000 --> 00:33:25,000 The duct tape wall stayed intact and it ripped it out of the K-Rail. 505 00:33:25,000 --> 00:33:30,000 I can't believe that. I mean that's a huge amount of shock that absorbed right there. 506 00:33:30,000 --> 00:33:34,000 While the guys are absorbing the shock of another failed test, 507 00:33:34,000 --> 00:33:38,000 the fact that the wall is still in one piece after being hit by the car 508 00:33:38,000 --> 00:33:42,000 means this myth has a definite whiff of plausibility. 509 00:33:47,000 --> 00:33:53,000 We're about to find out if Jamie and Adam can walk the walk on the world's most unusual bridge. 510 00:33:53,000 --> 00:33:57,000 We have spanned a hundred foot chasm with nothing but duct tape. 511 00:33:57,000 --> 00:34:03,000 Soon we will take that long walk into duct tape history. 512 00:34:04,000 --> 00:34:08,000 And just in case that walk becomes a plunge, 513 00:34:08,000 --> 00:34:12,000 a crane mounted safety rig will turn them into human tignatas. 514 00:34:12,000 --> 00:34:13,000 Yeah, this will work. 515 00:34:13,000 --> 00:34:14,000 I'm having a great time. 516 00:34:15,000 --> 00:34:17,000 Here's the thing about the safety system. 517 00:34:17,000 --> 00:34:20,000 I know that this yoyo fall arrestor will save my life, 518 00:34:20,000 --> 00:34:24,000 but if this bridge should fail and it has to save my life, 519 00:34:24,000 --> 00:34:27,000 I'm going to be swinging, I'm going to fall and get pulled up short. 520 00:34:27,000 --> 00:34:31,000 Either way, it's going to be terrifying and it's going to hurt. 521 00:34:31,000 --> 00:34:34,000 It's not just pride that makes me not want this bridge to fail. 522 00:34:34,000 --> 00:34:36,000 Our small scale tests say it should hold. 523 00:34:36,000 --> 00:34:40,000 We've done the math, everything should be fine, but it's duct tape. 524 00:34:40,000 --> 00:34:41,000 What are you going to do? 525 00:34:42,000 --> 00:34:45,000 Adam's a little lighter than Jamie, so he's going first. 526 00:34:45,000 --> 00:34:47,000 It'll be less stress on the tape. 527 00:34:48,000 --> 00:34:54,000 Just remember, if you hear a ripping sound, run really fast for the other side. 528 00:34:54,000 --> 00:34:55,000 Thanks for nothing. 529 00:34:55,000 --> 00:34:56,000 Good luck. 530 00:34:56,000 --> 00:34:57,000 Thanks. 531 00:34:58,000 --> 00:34:59,000 Here we go. 532 00:34:59,000 --> 00:35:06,000 Nearly 200 rolls of duct tape, a 50-foot drop and one 175-pound myth buster. 533 00:35:06,000 --> 00:35:07,000 All for the glory. 534 00:35:08,000 --> 00:35:09,000 All right. 535 00:35:10,000 --> 00:35:11,000 Here we go. 536 00:35:13,000 --> 00:35:14,000 Oh. 537 00:35:19,000 --> 00:35:20,000 Oh. 538 00:35:21,000 --> 00:35:23,000 Hey, I don't mind saying I'm kind of freaked out. 539 00:35:24,000 --> 00:35:25,000 Oh. 540 00:35:26,000 --> 00:35:30,000 All right, it feels pretty solid and it's not hard for me to stay upright. 541 00:35:30,000 --> 00:35:32,000 The handles are working just great. 542 00:35:32,000 --> 00:35:35,000 My heart's beating about 175 times a minute though. 543 00:35:35,000 --> 00:35:36,000 Whoa. 544 00:35:38,000 --> 00:35:41,000 People walk on bridges like this every day? 545 00:35:42,000 --> 00:35:44,000 This is terrifying. 546 00:35:44,000 --> 00:35:48,000 Nearing the middle of the bridge, he enters the real danger zone. 547 00:35:48,000 --> 00:35:53,000 This is where the duct tapes most likely to fail and flip Adam into thin air. 548 00:35:53,000 --> 00:35:55,000 I'm passing halfway. 549 00:35:55,000 --> 00:35:58,000 So, I've passed the danger of turtling. 550 00:36:00,000 --> 00:36:03,000 Oh dude, this is rough. 551 00:36:05,000 --> 00:36:07,000 You've got about 10 feet to go. 552 00:36:07,000 --> 00:36:09,000 Oh, now it feels much more stable. 553 00:36:09,000 --> 00:36:10,000 Now I feel okay. 554 00:36:11,000 --> 00:36:16,000 Two and a half minutes after starting out, Adam sets foot on solid ground. 555 00:36:16,000 --> 00:36:18,000 Hey, good to see you. 556 00:36:18,000 --> 00:36:21,000 Oh, land feels good. 557 00:36:21,000 --> 00:36:23,000 Good land, good solid ground. 558 00:36:23,000 --> 00:36:25,000 It's another world first. 559 00:36:25,000 --> 00:36:30,000 He's just crossed a hundred foot chasm on a bridge made of duct tape. 560 00:36:32,000 --> 00:36:35,000 I wouldn't have called this, but I actually felt quite stable out at the center. 561 00:36:35,000 --> 00:36:37,000 And for the first 15 or 20 feet. 562 00:36:37,000 --> 00:36:44,000 But the first third and the last third were really the roughest patch where the thing moves around a lot more than feels good. 563 00:36:44,000 --> 00:36:46,000 All right, your turn. 564 00:36:47,000 --> 00:36:50,000 Jamie steadies himself to make the return journey. 565 00:36:50,000 --> 00:36:52,000 Adam found it terrifying. 566 00:36:52,000 --> 00:36:56,000 I'm going to find it a lot worse than terrifying because I really don't like heights. 567 00:36:58,000 --> 00:37:02,000 His slightly heavier frame will put added stress on the duct tape. 568 00:37:02,000 --> 00:37:05,000 Oh gosh, here we go. 569 00:37:05,000 --> 00:37:11,000 And as soon as he puts his best foot forward, it's clear this won't be a smooth crossing. 570 00:37:11,000 --> 00:37:14,000 Now I know what it feels like to be a spider. 571 00:37:14,000 --> 00:37:17,000 Or maybe is it a bug in a spider web? 572 00:37:21,000 --> 00:37:23,000 That really is quite hairy. 573 00:37:27,000 --> 00:37:32,000 A third of the way across and Jamie's struggling to maintain his balance. 574 00:37:33,000 --> 00:37:44,000 This wiggling around is kind of something I don't want to be doing. 575 00:37:50,000 --> 00:37:52,000 Honestly, I'm not sure he's going to make it. 576 00:37:52,000 --> 00:37:56,000 Both Jamie and the bridge are teetering on the brink of failure. 577 00:37:56,000 --> 00:37:59,000 Oh, there's more ripped tape. 578 00:38:03,000 --> 00:38:05,000 TORRY GRANT AND CARRIER 579 00:38:11,000 --> 00:38:17,000 Torry, Grant and Carrie are hoping it'll be third time lucky for their duct tape roadblock. 580 00:38:17,000 --> 00:38:21,000 It's the same setup with one or two heavy duty add-ons. 581 00:38:21,000 --> 00:38:27,000 We have shackles rated at 30,000 pounds connecting our duct tape barrier to our carials. 582 00:38:27,000 --> 00:38:29,000 This should do the job. 583 00:38:29,000 --> 00:38:36,000 With Torry's tow bar and Grant's RC braking system good to go, car number three is ready for takeoff. 584 00:38:36,000 --> 00:38:38,000 Great, you ready? I'm ready. 585 00:38:38,000 --> 00:38:45,000 Okay, brake is off. Here we go. In three, two, one, hit it. 586 00:38:47,000 --> 00:38:51,000 Good, got a good start. Just getting up good speed. 587 00:38:51,000 --> 00:38:52,000 20. 588 00:38:52,000 --> 00:38:54,000 Carrie picks up the pace. 589 00:38:54,000 --> 00:38:56,000 Looking great. Right on target. 590 00:38:56,000 --> 00:38:58,000 Really good. Really good. 591 00:38:58,000 --> 00:39:00,000 Oh, we're going to do it this time, dude. 592 00:39:00,000 --> 00:39:01,000 This is it. 593 00:39:06,000 --> 00:39:08,000 The car hit the duct tape dead on. 594 00:39:12,000 --> 00:39:14,000 That was worth all that suffering. 595 00:39:16,000 --> 00:39:18,000 Oh my gosh. 596 00:39:19,000 --> 00:39:20,000 Look at that. 597 00:39:20,000 --> 00:39:22,000 That was right through. 598 00:39:22,000 --> 00:39:25,000 What would you say? Three inches? Two and a half inches of duct tape? 599 00:39:25,000 --> 00:39:26,000 Easily. 600 00:39:26,000 --> 00:39:28,000 Oh, that's three inches for sure. 601 00:39:28,000 --> 00:39:31,000 But the duct tape didn't give up without a fight. 602 00:39:31,000 --> 00:39:35,000 Despite being hit with a force totaling nearly 300,000 foot-pounds, 603 00:39:35,000 --> 00:39:41,000 the barrier still stretched like a piece of elastic before finally snapping. 604 00:39:43,000 --> 00:39:47,000 The wall stretched four to six feet before it gave up, 605 00:39:47,000 --> 00:39:50,000 just like it's supposed to all that time absorbing energy. 606 00:39:50,000 --> 00:39:54,000 Still an amazing product, but nope, not able to stop the car. 607 00:39:54,000 --> 00:39:57,000 Now sure we could have made one that was two feet thick, 608 00:39:57,000 --> 00:40:02,000 but let's face it, we bust up the K-rail and that stuff is made to stop cars. 609 00:40:02,000 --> 00:40:04,000 Looks like this one's busted. 610 00:40:04,000 --> 00:40:06,000 We found something duct tape finally can't do. 611 00:40:12,000 --> 00:40:13,000 Man. 612 00:40:13,000 --> 00:40:15,000 We got enough duct tape left over to fix that thing. 613 00:40:15,000 --> 00:40:16,000 Man. 614 00:40:22,000 --> 00:40:25,000 Meanwhile, Jamie's trapped in a nightmare. 615 00:40:25,000 --> 00:40:29,000 He's finding out the hard way that one of duct tape's main features, 616 00:40:29,000 --> 00:40:34,000 its elasticity, isn't so great when you're 50 feet off the ground. 617 00:40:37,000 --> 00:40:40,000 Every movement triggers more vibration. 618 00:40:40,000 --> 00:40:43,000 It's taking all his strength just to stay upright. 619 00:40:43,000 --> 00:40:45,000 I'm going to sit here and rest a second. 620 00:40:45,000 --> 00:40:46,000 Okay. 621 00:40:47,000 --> 00:40:50,000 Despite pre-stretching the tape's losing tension, 622 00:40:50,000 --> 00:40:53,000 Andy hasn't even made it to the perilous midpoint. 623 00:40:53,000 --> 00:40:56,000 Man, you passed that halfway point. 624 00:40:56,000 --> 00:40:58,000 Is that all? 625 00:40:58,000 --> 00:41:01,000 It feels like I've been going for a mile. 626 00:41:03,000 --> 00:41:06,000 I don't mind saying I'm hyperventilating. 627 00:41:08,000 --> 00:41:12,000 The bridge is so unstable, he must inch his way to safety. 628 00:41:14,000 --> 00:41:18,000 It's taken him four times longer than Adam, 629 00:41:18,000 --> 00:41:22,000 but Jamie finally makes it back to Terra Ferma. 630 00:41:22,000 --> 00:41:24,000 Ladies and gentlemen, they are made of brass. 631 00:41:24,000 --> 00:41:26,000 James Heineman, congratulations! 632 00:41:28,000 --> 00:41:30,000 That is absolutely awful. 633 00:41:31,000 --> 00:41:33,000 That's really saying something, 634 00:41:33,000 --> 00:41:36,000 given the other fears he's faced in the name of myth-busting. 635 00:41:37,000 --> 00:41:38,000 I've been buried alive. 636 00:41:38,000 --> 00:41:41,000 I've been charged by great white sharks. 637 00:41:42,000 --> 00:41:46,000 This thing here is terrifying in a totally different way. 638 00:41:48,000 --> 00:41:51,000 It's not so bad walking across something like this, 639 00:41:51,000 --> 00:41:53,000 just like going over the heights with it. 640 00:41:53,000 --> 00:41:57,000 The problem is that you're just on the verge 641 00:41:57,000 --> 00:42:02,000 when you get a little ways out into it of losing balance. 642 00:42:02,000 --> 00:42:06,000 It's like there's nothing solid to hold on to. 643 00:42:07,000 --> 00:42:12,000 Walking across it is this constant, intense correction 644 00:42:12,000 --> 00:42:16,000 to try and dampen out the wiggly waves 645 00:42:16,000 --> 00:42:18,000 that you're setting up on these ropes. 646 00:42:18,000 --> 00:42:23,000 Viewing both walks, it's clear Adam was on a much firmer footing. 647 00:42:23,000 --> 00:42:26,000 Why was the bridge so wobbly for me? 648 00:42:26,000 --> 00:42:29,000 Could be me, could be the material, though. 649 00:42:29,000 --> 00:42:32,000 We do know that it stretches out quite a bit under a load, 650 00:42:32,000 --> 00:42:35,000 and Adam did in fact put a load on it. 651 00:42:35,000 --> 00:42:37,000 One way or another, it worked, 652 00:42:37,000 --> 00:42:40,000 but it's not an ideal material for a bridge. 653 00:42:44,000 --> 00:42:46,000 I gotta say I'm pretty impressed with this stuff. 654 00:42:46,000 --> 00:42:50,000 It's a bridge, it's a rope, it can shoot, it can float. 655 00:42:50,000 --> 00:42:54,000 Just two sides and infinite possibilities. 656 00:42:56,000 --> 00:42:59,000 Verdict, is there anything duct tape can't do? 657 00:42:59,000 --> 00:43:02,000 Two episodes and counting, almost nothing. 658 00:43:02,000 --> 00:43:04,000 You know we're far from finished, 659 00:43:04,000 --> 00:43:07,000 we're going to find crazier crap to do with this stuff. 660 00:43:07,000 --> 00:43:10,000 Yeah, but that's another episode. Let's go. 661 00:43:13,000 --> 00:43:16,000 I think we need to get airborne with this stuff. 662 00:43:16,000 --> 00:43:18,000 Absolutely. 663 00:43:26,000 --> 00:43:27,000 Want more? 664 00:43:27,000 --> 00:43:31,000 Log on to Discovery.com slash MythBusters. Go!