1 00:00:05,982 --> 00:00:07,818 All right, the vehicle that we chose this next myth 2 00:00:07,851 --> 00:00:09,052 happens to be a two-seater. 3 00:00:09,086 --> 00:00:10,554 And if you'll see why it's not safe 4 00:00:10,587 --> 00:00:13,624 for me to even be standing on the sidelines collecting data. 5 00:00:13,657 --> 00:00:15,859 This is starting to feel like a bad idea. 6 00:00:15,892 --> 00:00:19,096 So I'm going to scope out a location for a future myth. 7 00:00:19,130 --> 00:00:20,931 And I'll see you on the flip side. 8 00:00:20,964 --> 00:00:21,732 Bye. 9 00:00:23,134 --> 00:00:25,602 TORY BELLECI: So now this is the last attempt 10 00:00:25,636 --> 00:00:28,139 to see if we can stop. 11 00:00:33,544 --> 00:00:35,212 BISI EZERIOHA: I don't know what's going to happen. 12 00:00:35,246 --> 00:00:36,980 I'm cautiously titillated. 13 00:00:37,013 --> 00:00:39,983 TORY BELLECI: [laughs] you're cautiously titillated. 14 00:00:40,016 --> 00:00:40,784 BISI EZERIOHA: Yes. 15 00:00:42,619 --> 00:00:43,987 TORY BELLECI: This is the moment of truth. 16 00:00:52,863 --> 00:00:54,831 All right, here comes our stop. 17 00:00:56,333 --> 00:00:57,301 This is it. 18 00:00:57,334 --> 00:00:58,269 This better work. 19 00:00:59,803 --> 00:01:00,671 Oh, shoot! - Oh, oh, oh! 20 00:01:07,178 --> 00:01:08,044 Yaay! 21 00:01:08,078 --> 00:01:09,045 NARRATOR: Meet the team. 22 00:01:10,381 --> 00:01:11,448 TORY BELLECI: There's a potential 23 00:01:11,482 --> 00:01:12,783 that I could get electrocuted. 24 00:01:15,319 --> 00:01:16,987 NARRATOR: With the mechanical expertise-- 25 00:01:17,020 --> 00:01:19,356 FAYE HADLEY: More oxygen, more fuel, that makes more power. 26 00:01:20,491 --> 00:01:22,092 NARRATOR: --to test all things automotive. 27 00:01:23,260 --> 00:01:24,661 BISI EZERIOHA: It's almost like surgery. 28 00:01:24,695 --> 00:01:27,063 If I make a mistake, we'll blow up the engine. 29 00:01:28,199 --> 00:01:30,667 NARRATOR: This is "Motor Mythbusters"-- 30 00:01:30,701 --> 00:01:32,203 FAYE HADLEY: This is our job! 31 00:01:33,604 --> 00:01:35,038 NARRATOR: --where science-- 32 00:01:35,972 --> 00:01:37,608 --meets the streets. 33 00:01:40,377 --> 00:01:42,078 TORY BELLECI: Stop working, Bisi, it's lunchtime. 34 00:01:42,112 --> 00:01:43,214 I'm buying. 35 00:01:43,214 --> 00:01:45,015 You're buying, [blows] don't tell me twice. 36 00:01:45,048 --> 00:01:46,250 I was just kidding. I'm not buying. 37 00:01:46,283 --> 00:01:47,484 You're buying. - Oh, come on. 38 00:01:48,552 --> 00:01:49,620 TORY BELLECI: You and these minivans. 39 00:01:49,653 --> 00:01:50,954 I-- - Look at how cool that-- 40 00:01:50,987 --> 00:01:52,223 I don't-- I don't get it. 41 00:01:52,256 --> 00:01:53,390 I don't see the allure. 42 00:01:56,560 --> 00:01:58,529 BISI EZERIOHA: Tory, I love minivans, especially 43 00:01:58,562 --> 00:01:59,796 these modern day ones. 44 00:01:59,830 --> 00:02:01,965 I mean, it's comfortable, it's spacious. 45 00:02:01,998 --> 00:02:03,334 I can modify them. 46 00:02:03,367 --> 00:02:05,001 TORY BELLECI: They're just not as cool as they used to be. 47 00:02:05,035 --> 00:02:08,439 I mean, back in the '70s, they had such cool vans. 48 00:02:08,472 --> 00:02:10,374 They had like wall-to-wall carpet. 49 00:02:10,407 --> 00:02:11,642 They had like swivel chairs inside. 50 00:02:11,675 --> 00:02:12,776 BISI EZERIOHA: Right. 51 00:02:12,809 --> 00:02:13,877 TORY BELLECI: You could have a bed in the back. 52 00:02:15,045 --> 00:02:15,846 BISI EZERIOHA: It looks like I love newer vans. 53 00:02:15,879 --> 00:02:17,481 You love old school vans. 54 00:02:17,514 --> 00:02:18,782 We both love vans. 55 00:02:18,815 --> 00:02:21,252 [clicks] Oh, you know what, do you remember 56 00:02:21,252 --> 00:02:22,253 that movie "Strange Brew?" 57 00:02:22,286 --> 00:02:23,086 Of course, I do. 58 00:02:23,119 --> 00:02:24,255 That thing is a classic. 59 00:02:24,255 --> 00:02:25,622 TORY BELLECI: Yeah, and it had such a cool scene 60 00:02:25,656 --> 00:02:26,923 where they cut the brake lines. 61 00:02:26,957 --> 00:02:30,461 In the movie, the bad guys tamper with the brake lines. 62 00:02:30,494 --> 00:02:34,765 And he said specifically, I've made it so that these guys 63 00:02:34,798 --> 00:02:35,799 will have two stops. 64 00:02:35,832 --> 00:02:38,535 And then the third time will be no brakes. 65 00:02:38,569 --> 00:02:40,571 Oh my goodness, how do you know if that's even possible? 66 00:02:40,604 --> 00:02:41,905 TORY BELLECI: That's what I'm wondering. 67 00:02:41,938 --> 00:02:43,139 What if we tested that? 68 00:02:43,974 --> 00:02:45,542 That sounds really good. 69 00:02:45,576 --> 00:02:47,110 Because in my mind I'm thinking, 70 00:02:47,143 --> 00:02:48,011 once you crack the lines-- 71 00:02:49,280 --> 00:02:50,447 --you're just-- you don't have brakes anymore. 72 00:02:50,481 --> 00:02:51,548 I think so too. So maybe-- 73 00:02:52,916 --> 00:02:54,150 --maybe there's a way we can modulate it to some extent. 74 00:02:54,184 --> 00:02:55,051 I don't know. I don't know. 75 00:02:55,085 --> 00:02:56,019 But I'm down to test this. 76 00:02:56,853 --> 00:02:57,721 All right, I'm hungry. 77 00:02:58,589 --> 00:02:59,356 Let's get some tacos. 78 00:03:01,858 --> 00:03:03,827 NARRATOR: It's a cult classic from the '80s. 79 00:03:04,961 --> 00:03:07,431 "Strange Brew" takes the familiar movie trope 80 00:03:07,464 --> 00:03:11,302 that cutting brake lines causes catastrophe and gives 81 00:03:11,335 --> 00:03:13,470 it a little twist literally. 82 00:03:16,940 --> 00:03:20,844 The myth is a calibrated slowly will sabotage the brake system 83 00:03:20,877 --> 00:03:24,014 so precisely you get two stops. 84 00:03:25,482 --> 00:03:28,652 But the hydraulics are compromised enough so 85 00:03:28,685 --> 00:03:30,587 by the time you need to break again, 86 00:03:30,621 --> 00:03:33,189 well, it turns out that the third one was 87 00:03:33,223 --> 00:03:34,224 kind of necessary. 88 00:03:40,063 --> 00:03:41,698 TORY BELLECI: And how's this for a set of wheels? 89 00:03:42,533 --> 00:03:44,034 A classic '70s van. 90 00:03:45,902 --> 00:03:47,338 Perfect for testing this myth. 91 00:03:53,644 --> 00:03:56,913 We need to find out what that PSI number is that will 92 00:03:56,947 --> 00:03:58,415 no longer stop this van. 93 00:03:59,750 --> 00:04:02,686 All brake systems operate by hydraulic pressure or PSI 94 00:04:02,719 --> 00:04:04,020 in the brake lines. 95 00:04:04,054 --> 00:04:06,923 So when you apply the brakes, it increases the pressure, 96 00:04:06,957 --> 00:04:10,561 forcing fluids in the break line to squeeze the brake pads 97 00:04:10,594 --> 00:04:12,028 and bring the vehicle to a stop. 98 00:04:13,764 --> 00:04:17,167 So Bisi has been setting up our brake lines with some sensors. 99 00:04:17,200 --> 00:04:18,802 BISI EZERIOHA: Yes, I took the liberty of rigging 100 00:04:18,835 --> 00:04:19,970 up something very clever. 101 00:04:20,003 --> 00:04:21,572 Well, we're monitoring all the brake pressure 102 00:04:21,605 --> 00:04:22,873 in our entire system. 103 00:04:22,906 --> 00:04:25,075 And what it does for us is, I have this great logging 104 00:04:25,108 --> 00:04:28,745 dash that could show us minimum, real time, average and peak. 105 00:04:28,779 --> 00:04:29,946 That's perfect. 106 00:04:29,980 --> 00:04:32,616 All we need to do is find that number of PSI that 107 00:04:32,649 --> 00:04:34,150 will no longer stop this van. 108 00:04:34,184 --> 00:04:35,386 And that data, I will have for you. 109 00:04:35,419 --> 00:04:36,553 BISI EZERIOHA: You ready for a crazy ride? 110 00:04:36,587 --> 00:04:37,388 I'm ready. 111 00:04:44,395 --> 00:04:45,796 TORY BELLECI: How will we determine the break pressure 112 00:04:45,829 --> 00:04:47,263 point when the brakes fail? 113 00:04:48,098 --> 00:04:48,865 All right-- 114 00:04:50,266 --> 00:04:51,635 --are you ready? 115 00:04:54,037 --> 00:04:55,271 I'm scared of this van. 116 00:04:57,708 --> 00:04:59,676 We'll keep gently squeezing the brake pedal 117 00:04:59,710 --> 00:05:01,945 to see how high the pressure measuring 118 00:05:01,978 --> 00:05:05,215 PSI has to reach before the brakes start to work. 119 00:05:06,049 --> 00:05:07,618 OK, are you ready, Bisi? 120 00:05:08,519 --> 00:05:09,586 Just give us 40 PSI straight up. 121 00:05:09,620 --> 00:05:10,421 OK. 122 00:05:14,290 --> 00:05:15,992 TORY BELLECI: That didn't stop it. 123 00:05:16,026 --> 00:05:17,561 Even 50 doesn't stop it. 124 00:05:17,594 --> 00:05:19,963 Yeah, 80 doesn't stop it. 125 00:05:20,964 --> 00:05:22,065 Like, let me-- let's get up to speed. 126 00:05:22,098 --> 00:05:22,866 BISI EZERIOHA: OK. 127 00:05:23,900 --> 00:05:25,035 TORY BELLECI: All right, here we go. 128 00:05:33,610 --> 00:05:34,511 BISI EZERIOHA: Wow! 129 00:05:34,545 --> 00:05:35,546 TORY BELLECI: That is not stopping. 130 00:05:39,483 --> 00:05:41,818 BISI EZERIOHA: And we got as high as 208 PSI. 131 00:05:43,019 --> 00:05:44,320 I think that's our magic number. 132 00:05:44,354 --> 00:05:46,657 TORY BELLECI: That's incredible, 208 PSI. 133 00:05:46,690 --> 00:05:48,725 And it's still not bringing the van to a stop. 134 00:05:48,759 --> 00:05:49,993 BISI EZERIOHA: Uh, truly. 135 00:05:51,294 --> 00:05:54,465 TORY BELLECI: So we found our magic number, 208 PSI. 136 00:05:54,498 --> 00:05:56,299 Only at that number or above will 137 00:05:56,332 --> 00:05:57,701 the brakes work enough to stop the van. 138 00:05:58,669 --> 00:06:00,003 So I think we should build a rig 139 00:06:00,036 --> 00:06:02,473 maybe on a table that had all the components 140 00:06:02,506 --> 00:06:03,540 of a braking system. 141 00:06:03,574 --> 00:06:04,941 That we can play around with. 142 00:06:04,975 --> 00:06:08,512 And then cut or crack open some parts of that system 143 00:06:08,545 --> 00:06:10,346 and see what we can do-- 144 00:06:10,380 --> 00:06:11,548 --to get to the magic number. 145 00:06:11,582 --> 00:06:15,285 --to get that magic number after two hard pumps. 146 00:06:15,318 --> 00:06:16,319 All right, I love it. 147 00:06:19,089 --> 00:06:21,157 BISI EZERIOHA: Well, I guess it's now time to build the rig. 148 00:06:21,191 --> 00:06:22,959 TORY BELLECI: Since we need to look at the brake lines 149 00:06:22,993 --> 00:06:25,496 isolated, what if we just build a complete brake 150 00:06:25,496 --> 00:06:27,197 system on top of the table. 151 00:06:30,166 --> 00:06:31,902 All right, brake one. 152 00:06:40,076 --> 00:06:41,377 BISI EZERIOHA: That looks good. 153 00:06:41,411 --> 00:06:43,113 TORY BELLECI: Cool, so we'll start doing the hard lines. 154 00:06:43,146 --> 00:06:43,880 BISI EZERIOHA: Yeah. 155 00:06:49,520 --> 00:06:51,888 These sensors as they sit now are dormant. 156 00:06:51,922 --> 00:06:53,256 They don't do much of anything. 157 00:06:53,289 --> 00:06:56,593 So we need to record what's going on and view it real time. 158 00:06:56,627 --> 00:07:00,531 So I need to program this module to read each and every sensor. 159 00:07:05,969 --> 00:07:07,538 TORY BELLECI: How is that? BISI EZERIOHA: Looking good. 160 00:07:08,605 --> 00:07:09,840 You know, I just realized something. 161 00:07:09,873 --> 00:07:11,074 How are we going to steer this thing? 162 00:07:13,910 --> 00:07:16,547 Bisi, let's just walk through what we have set up. 163 00:07:16,547 --> 00:07:18,281 Now, this front one right here, 164 00:07:18,314 --> 00:07:19,550 this is the brake caliper-- 165 00:07:19,550 --> 00:07:20,851 TORY BELLECI: Right. 166 00:07:20,884 --> 00:07:22,719 --which contains the brake pads which induces friction 167 00:07:22,753 --> 00:07:23,754 to help us stop the car. 168 00:07:23,787 --> 00:07:25,589 So when we're pressing on the pedal, 169 00:07:25,622 --> 00:07:26,990 we're actually pushing those fluids. 170 00:07:27,023 --> 00:07:28,258 Yes. 171 00:07:28,291 --> 00:07:29,726 And that fluid is pushing those calipers together-- 172 00:07:29,760 --> 00:07:30,727 Absolutely. 173 00:07:30,761 --> 00:07:32,095 - --giving us stopping power. - Yes. 174 00:07:32,128 --> 00:07:33,764 TORY BELLECI: Let's talk about the metering system 175 00:07:33,797 --> 00:07:36,299 because we want to know exactly how much pressure we have 176 00:07:36,332 --> 00:07:37,634 in each of our brake lines. 177 00:07:37,668 --> 00:07:40,303 BISI EZERIOHA: Yes, so this is a high-pressure sensor. 178 00:07:40,336 --> 00:07:42,806 And the sensor will in real time tell us what 179 00:07:42,839 --> 00:07:44,440 pressures we have throughout. 180 00:07:44,474 --> 00:07:46,977 And we will place that sensor in the van 181 00:07:47,010 --> 00:07:48,745 when we go full scale so that we can 182 00:07:48,779 --> 00:07:50,280 monitor the pressure we're getting 183 00:07:50,313 --> 00:07:51,381 when we apply the brakes. 184 00:07:51,414 --> 00:07:52,649 TORY BELLECI: Now that we have meters, 185 00:07:52,683 --> 00:07:54,918 we can dial in the pressure and see 186 00:07:54,951 --> 00:07:57,053 if we can recreate what we saw in the movie 187 00:07:57,087 --> 00:07:59,222 where they press the brakes twice. 188 00:07:59,255 --> 00:08:01,091 And then the next time, they had no braking power. 189 00:08:01,124 --> 00:08:02,158 Absolutely. 190 00:08:02,192 --> 00:08:03,760 Now, we're not going to have to replace 191 00:08:03,794 --> 00:08:05,195 the line every time we cut it. 192 00:08:05,228 --> 00:08:06,997 We just have to loosen up the connectors. 193 00:08:07,030 --> 00:08:08,098 Good point. So-- 194 00:08:08,131 --> 00:08:09,199 - All right. - --why don't you hop on in. 195 00:08:09,232 --> 00:08:10,466 And then you'll pump. 196 00:08:10,500 --> 00:08:12,502 And we'll look at the pressures real time. 197 00:08:12,603 --> 00:08:14,605 Yeah, let's-- let's-- let's put your lines to the test. 198 00:08:16,139 --> 00:08:18,308 First, Tory, we're going to do a baseline reading. 199 00:08:18,341 --> 00:08:19,610 - Are you ready? - I am ready. 200 00:08:19,643 --> 00:08:21,477 Just-- just give me a regular break that you have. 201 00:08:21,511 --> 00:08:22,312 TORY BELLECI: This is it. 202 00:08:22,345 --> 00:08:23,747 I'm coming to like a slow stop. 203 00:08:23,780 --> 00:08:24,715 OK, slow stop. 204 00:08:26,016 --> 00:08:27,050 Oh, yeah. 205 00:08:27,083 --> 00:08:30,821 So that was like 336, 338. 206 00:08:30,854 --> 00:08:33,824 Maybe what we should start doing is disconnecting 207 00:08:33,857 --> 00:08:37,761 and see if we can get our front brakes around that 208 mark. 208 00:08:37,794 --> 00:08:39,062 BISI EZERIOHA: So it's important for me 209 00:08:39,095 --> 00:08:40,430 to stick up on the number 208. 210 00:08:40,463 --> 00:08:43,800 So I'm going to take count of how many revolutions 211 00:08:43,834 --> 00:08:46,436 I loosen this up just to give a nice crack. 212 00:08:46,469 --> 00:08:48,404 And that'll be my unit of measurement-- 213 00:08:48,438 --> 00:08:49,439 revolutions in this case. 214 00:08:50,406 --> 00:08:52,375 One full wrench rotation to start. 215 00:08:52,408 --> 00:08:53,844 OK, there we go. [music playing] 216 00:08:53,877 --> 00:08:54,645 We're set. 217 00:08:54,678 --> 00:08:55,812 Everything is at 0. 218 00:08:55,846 --> 00:08:57,247 I need you to give me that first hard pump. 219 00:08:57,280 --> 00:08:58,048 Yeah. 220 00:08:58,081 --> 00:08:59,249 And then a medium pump. 221 00:08:59,282 --> 00:09:00,917 - OK, here we go. - And let's see what happens. 222 00:09:00,951 --> 00:09:01,718 All right. 223 00:09:01,752 --> 00:09:02,853 [music playing] Oh! 224 00:09:02,886 --> 00:09:03,754 Oh, I didn't expect that. 225 00:09:03,787 --> 00:09:04,554 Oh! 226 00:09:04,655 --> 00:09:05,388 Thanks so much, sir. 227 00:09:07,824 --> 00:09:09,059 - Oh my god! - Oh! 228 00:09:10,226 --> 00:09:15,465 We're at 167 PSI on the left, 146 on the right. 229 00:09:15,498 --> 00:09:17,668 We're well below our threshold. 230 00:09:17,668 --> 00:09:19,703 And that was just with one pump not three. 231 00:09:20,671 --> 00:09:21,705 If you had done this on our van-- 232 00:09:21,738 --> 00:09:22,939 Right. 233 00:09:22,973 --> 00:09:24,040 TORY BELLECI: --we wouldn't have been able to stop. 234 00:09:24,074 --> 00:09:25,075 We wouldn't have been able to stop at all. 235 00:09:25,108 --> 00:09:28,679 The full rotation was way too much. 236 00:09:28,679 --> 00:09:30,146 So how much do you want to go? 237 00:09:30,180 --> 00:09:31,882 So I'm going to mark it and just go-- 238 00:09:31,915 --> 00:09:32,849 --half a revolution. 239 00:09:32,883 --> 00:09:34,250 --not even half, 20%. 240 00:09:34,284 --> 00:09:35,051 TORY BELLECI: OK. 241 00:09:36,386 --> 00:09:37,153 So that's it? 242 00:09:37,187 --> 00:09:37,988 BISI EZERIOHA: That's it. 243 00:09:38,021 --> 00:09:38,922 OK, here we go. 244 00:09:39,923 --> 00:09:42,893 This is stop number 1, full brake. 245 00:09:44,527 --> 00:09:45,929 BISI EZERIOHA: OK. TORY BELLECI: Wow, look at. 246 00:09:45,962 --> 00:09:47,597 BISI EZERIOHA: So some came out. TORY BELLECI: So it's dripping. 247 00:09:47,698 --> 00:09:48,899 BISI EZERIOHA: Yes. 248 00:09:48,932 --> 00:09:51,101 TORY BELLECI: That's good, 480 PSI on the front breaks. 249 00:09:51,134 --> 00:09:52,736 That's going to be enough to stop the van. 250 00:09:52,769 --> 00:09:54,537 All right, this is stop number 2. 251 00:09:55,505 --> 00:09:56,272 Yes. 252 00:09:58,374 --> 00:09:59,175 Oh, oh, oh! 253 00:10:00,711 --> 00:10:01,611 Bisi, I think we're there. 254 00:10:01,644 --> 00:10:02,412 BISI EZERIOHA: I know. 255 00:10:02,445 --> 00:10:04,547 We're at 215 PSI. 256 00:10:04,580 --> 00:10:06,016 That would be enough to stop this van. 257 00:10:06,049 --> 00:10:06,817 Yes. 258 00:10:06,850 --> 00:10:09,085 Now, the third stop-- 259 00:10:09,119 --> 00:10:10,520 OK, let me write this down first-- 260 00:10:10,553 --> 00:10:11,955 oh my goodness-- - I'm getting excited [laughs]. 261 00:10:11,988 --> 00:10:12,756 --2. 262 00:10:14,057 --> 00:10:15,458 TORY BELLECI: So this is the third stop. 263 00:10:16,626 --> 00:10:19,529 If it doesn't reach 208 PSI on this final pump, 264 00:10:19,562 --> 00:10:22,298 there won't be enough pressure to stop the van. 265 00:10:22,332 --> 00:10:25,101 Which means it'll be right on the money for this myth. 266 00:10:25,135 --> 00:10:26,602 Oh, I wonder what's going to happen. 267 00:10:28,571 --> 00:10:29,940 Oh my gosh, right there. TORY BELLECI: 208. 268 00:10:30,774 --> 00:10:31,908 208 and 207. 269 00:10:33,209 --> 00:10:34,610 We've-- we've done it. - It's right there. 270 00:10:34,644 --> 00:10:35,611 TORY BELLECI: We've done it. [laughs] 271 00:10:35,645 --> 00:10:36,346 BISI EZERIOHA: I can't believe it. 272 00:10:37,714 --> 00:10:40,650 We were able to turn the nut just 20% of a full rotation. 273 00:10:41,818 --> 00:10:44,487 And our first ring was 480, second ring was 215 274 00:10:44,520 --> 00:10:46,857 and the third, right at 280. 275 00:10:46,890 --> 00:10:48,925 Which means the van would not stop. 276 00:10:50,193 --> 00:10:52,295 First of all, it's frightening how easy this was. 277 00:10:52,328 --> 00:10:57,133 But just that tiny crack is all we needed to get two stops. 278 00:10:57,167 --> 00:10:58,869 And then the third stop won't happen. 279 00:10:58,902 --> 00:11:01,204 Now, we just have to do this on our van 280 00:11:01,237 --> 00:11:03,106 and see if we can get the same results. 281 00:11:03,139 --> 00:11:05,041 There might be some validity to this myth. 282 00:11:10,646 --> 00:11:12,482 OK, you know, I had a thought about this. 283 00:11:12,515 --> 00:11:15,151 This could be a death trap considering we're trying 284 00:11:15,185 --> 00:11:17,687 to make the brakes not work. 285 00:11:17,788 --> 00:11:20,390 And if we're driving, and the brakes no longer work, 286 00:11:20,423 --> 00:11:22,158 there's a possibility that we could crash. 287 00:11:22,192 --> 00:11:23,459 And we could be in trouble because we 288 00:11:23,493 --> 00:11:26,429 have this crazy engine right here next to us. 289 00:11:26,462 --> 00:11:28,865 Yeah, and we have to be driving this 290 00:11:28,899 --> 00:11:31,401 and pushing the brakes the way they did in the movie. 291 00:11:31,434 --> 00:11:32,668 And that could be a big problem. 292 00:11:32,702 --> 00:11:34,270 I mean, we have so much room back here. 293 00:11:34,304 --> 00:11:35,271 Yeah. 294 00:11:35,305 --> 00:11:36,506 What if we just push everything back. 295 00:11:36,539 --> 00:11:39,509 So that way, if we do crash, we have a huge crumple 296 00:11:39,542 --> 00:11:40,844 zone in the front. 297 00:11:40,877 --> 00:11:44,147 And then we'll be OK. 298 00:11:44,180 --> 00:11:45,248 I think that'll work. 299 00:11:45,281 --> 00:11:46,582 You know, we'll just have, like, a really 300 00:11:46,616 --> 00:11:48,018 long ridiculous steering wheel. 301 00:11:48,051 --> 00:11:50,386 And like the pedals, we can just have extenders. 302 00:11:50,420 --> 00:11:51,187 Let's do it. 303 00:11:53,556 --> 00:11:54,457 Wow, that is cool already. 304 00:11:54,490 --> 00:11:55,558 It's kind of like you're driving. 305 00:11:55,591 --> 00:11:56,659 Yeah, that-- that feels good. 306 00:11:56,692 --> 00:11:57,460 Yeah. 307 00:11:59,863 --> 00:12:03,834 So we have right now just this pipe that extends. 308 00:12:03,834 --> 00:12:06,236 And that's going to be where we put 309 00:12:06,269 --> 00:12:08,104 pressure on to use the brake. 310 00:12:08,138 --> 00:12:11,507 But what we wanted to do is, in case we crash, 311 00:12:11,541 --> 00:12:14,610 we're using nylon threaded rod in here. 312 00:12:14,644 --> 00:12:17,680 So if we do crash, this sheers. 313 00:12:17,713 --> 00:12:21,151 And then we don't get impaled by our brake 314 00:12:21,184 --> 00:12:23,286 and steering extensions. 315 00:12:23,319 --> 00:12:24,855 All right, we're going to test that. 316 00:12:25,856 --> 00:12:26,857 BISI EZERIOHA: Oh, that feels good. 317 00:12:26,857 --> 00:12:27,891 TORY BELLECI: Perfect, all right. 318 00:12:27,924 --> 00:12:28,925 And it returns beautifully. 319 00:12:28,959 --> 00:12:29,960 Good. 320 00:12:29,993 --> 00:12:31,694 Here, this is the pedal for you there. 321 00:12:34,564 --> 00:12:36,132 Here, it slides up. 322 00:12:39,502 --> 00:12:41,071 Now, this is the most dangerous one. 323 00:12:41,104 --> 00:12:43,173 This is the one that really needs to be able to collapse. 324 00:12:43,206 --> 00:12:44,207 Yes. 325 00:12:44,240 --> 00:12:45,408 That's just going to be a big harpoon 326 00:12:45,441 --> 00:12:46,076 right through your chest. 327 00:12:46,109 --> 00:12:46,877 That's very true. 328 00:12:48,578 --> 00:12:50,180 All right, try that. 329 00:12:50,213 --> 00:12:52,015 Oooh, it looks good to me. 330 00:12:52,048 --> 00:12:52,883 Yep! 331 00:12:53,884 --> 00:12:55,118 How are we going to shift this thing? 332 00:12:55,151 --> 00:12:57,287 Maybe something when we triangulate down to the floor. 333 00:12:57,320 --> 00:12:58,088 Yeah. 334 00:13:01,791 --> 00:13:02,558 Oh, yeah. 335 00:13:03,726 --> 00:13:04,494 Oooh! 336 00:13:05,361 --> 00:13:07,130 This-- [cranking] 337 00:13:11,334 --> 00:13:13,269 BISI EZERIOHA: In all my years of building cars, 338 00:13:13,303 --> 00:13:17,473 I've never seen or done anything as intricate as this. 339 00:13:22,345 --> 00:13:25,181 TORY BELLECI: All right, I think we're ready to test this baby. 340 00:13:26,549 --> 00:13:27,417 BISI EZERIOHA: I'm excited. 341 00:13:27,450 --> 00:13:28,551 I'm ready. 342 00:13:28,584 --> 00:13:30,420 Look at everything that we've accomplished here. 343 00:13:30,453 --> 00:13:31,221 TORY BELLECI: Yeah. 344 00:13:33,056 --> 00:13:34,124 BISI EZERIOHA: Oh! 345 00:13:34,157 --> 00:13:35,391 This is good. TORY BELLECI: Oh, yeah! 346 00:13:35,425 --> 00:13:36,626 BISI EZERIOHA: This is the life. 347 00:13:36,659 --> 00:13:39,262 TORY BELLECI: This is going to be so weird driving. 348 00:13:43,199 --> 00:13:45,101 So to test this myth safely, we've come out to a parking lot 349 00:13:45,135 --> 00:13:47,370 where there's hardly anything to crash into. 350 00:13:47,403 --> 00:13:49,272 We're going to drive around the course a couple of times, 351 00:13:49,305 --> 00:13:50,406 make two stops. 352 00:13:50,440 --> 00:13:52,475 And then hopefully, that third stop won't work. 353 00:13:52,508 --> 00:13:55,511 So in order to stop, we've set up some water barrels that 354 00:13:55,545 --> 00:13:57,613 will stop the van safely, similar 355 00:13:57,647 --> 00:13:58,781 to what you would see on a freeway. 356 00:13:59,615 --> 00:14:00,516 We have our braking system. 357 00:14:01,717 --> 00:14:03,819 We've got our steering and our accelerator. 358 00:14:03,853 --> 00:14:05,521 We have this emergency brake here. 359 00:14:05,555 --> 00:14:07,390 Plus, we have our shifter. 360 00:14:07,423 --> 00:14:08,992 And the best part is we have a kill 361 00:14:09,025 --> 00:14:10,360 switch to shut off the engine. 362 00:14:10,393 --> 00:14:12,262 And in order to start the engines, 363 00:14:12,295 --> 00:14:13,429 we got our start switch right here. 364 00:14:14,730 --> 00:14:16,299 BISI EZERIOHA: Now, above and beyond that, this myth 365 00:14:16,332 --> 00:14:17,968 is chock-full of data. 366 00:14:17,968 --> 00:14:19,769 So just like we did on our test rig, 367 00:14:19,802 --> 00:14:21,837 we are going to monitor the tire pressure 368 00:14:21,871 --> 00:14:24,140 in the hydraulic system at all times. 369 00:14:24,174 --> 00:14:26,209 So we'll know exactly at what point-- 370 00:14:26,242 --> 00:14:27,677 which was 208 PSI-- 371 00:14:27,710 --> 00:14:28,678 Understood. 372 00:14:28,711 --> 00:14:30,280 --where this van won't stop anymore. 373 00:14:30,313 --> 00:14:31,982 Yes, but you know what, I may just 374 00:14:31,982 --> 00:14:33,583 stay here because this is so-- 375 00:14:33,616 --> 00:14:34,550 Yes, very plush. 376 00:14:37,387 --> 00:14:38,821 BISI EZERIOHA: Well, in our small-scale test, 377 00:14:38,854 --> 00:14:43,093 I have the opportunity to crack open just about 20%. 378 00:14:43,126 --> 00:14:45,361 So for safety's sake, let's just ease 379 00:14:45,395 --> 00:14:48,731 into this by cracking the line just 10% of a whole turn. 380 00:14:48,764 --> 00:14:50,600 TORY BELLECI: We're at the starting line right now. 381 00:14:50,633 --> 00:14:53,003 We're going to go down, make a hard stop like in the movie. 382 00:14:53,036 --> 00:14:54,637 I'll come around here. 383 00:14:54,670 --> 00:14:57,240 But on the second brake, give us a little bit eased off. 384 00:14:57,273 --> 00:14:59,442 But if you recall in the movie, 385 00:14:59,475 --> 00:15:01,177 they turned the vehicle off. 386 00:15:01,211 --> 00:15:02,112 So we'll do that. 387 00:15:02,145 --> 00:15:03,246 And then we'll sit there and wait. 388 00:15:03,279 --> 00:15:04,347 But then we'll start it up again. 389 00:15:04,380 --> 00:15:05,681 Right. 390 00:15:05,715 --> 00:15:07,483 And then we'll come around again and see whether or not 391 00:15:07,517 --> 00:15:08,384 we have braking power. 392 00:15:08,418 --> 00:15:09,252 Yes, sounds good. 393 00:15:09,285 --> 00:15:10,053 OK. 394 00:15:11,187 --> 00:15:13,223 So it was just like a tiny, little crack. 395 00:15:13,256 --> 00:15:14,357 Yeah, it wasn't so bad. 396 00:15:14,390 --> 00:15:18,561 It was just-- maybe just one digit on this nut. 397 00:15:18,594 --> 00:15:19,362 OK, that's it. 398 00:15:19,395 --> 00:15:20,496 It was that simple. 399 00:15:20,530 --> 00:15:22,132 And this is starting to feel like a bad idea. 400 00:15:23,733 --> 00:15:25,335 All right, Bisi, here we go. 401 00:15:28,938 --> 00:15:30,173 BISI EZERIOHA: Are you pretty excited? 402 00:15:30,206 --> 00:15:31,041 Yes. 403 00:15:31,041 --> 00:15:32,642 This is our maiden voyage. 404 00:15:32,675 --> 00:15:35,578 This is the most ridiculous vehicle I've ever seen. 405 00:15:35,611 --> 00:15:37,080 [music playing] - Oh, wow. 406 00:15:37,113 --> 00:15:38,281 Oh, this is strange. 407 00:15:39,749 --> 00:15:41,084 It's like driving a boat. 408 00:15:41,117 --> 00:15:42,952 There's like a lot of leeway. 409 00:15:43,053 --> 00:15:44,087 Look how much play I have-- 410 00:15:44,120 --> 00:15:44,854 That much play, you're still going straight. 411 00:15:44,887 --> 00:15:45,721 --in the steering wheel. 412 00:15:47,057 --> 00:15:48,491 We are literally backseat drivers. 413 00:15:48,524 --> 00:15:49,292 This is ridiculous. 414 00:15:51,461 --> 00:15:55,431 TORY BELLECI: Strange road test, two stops, and then no brakes. 415 00:15:56,866 --> 00:15:58,668 BISI EZERIOHA: OK, so this first one, once again, it was abrupt. 416 00:15:58,701 --> 00:15:59,969 Yeah. 417 00:16:00,070 --> 00:16:02,272 BISI EZERIOHA: You are at 25 miles an hour. 418 00:16:04,674 --> 00:16:06,509 OK, oh, that's good. 419 00:16:06,542 --> 00:16:07,877 - We've got one stop. - That's good. 420 00:16:07,910 --> 00:16:09,845 And let's take a look at how much-- how much we had there. 421 00:16:09,879 --> 00:16:11,147 TORY BELLECI: OK. 422 00:16:11,181 --> 00:16:12,648 BISI EZERIOHA: We are at 7-- wow, that's a lot of PSI. 423 00:16:12,682 --> 00:16:13,783 TORY BELLECI: 784 PSI. 424 00:16:13,816 --> 00:16:14,650 OK, 22 miles an hour. 425 00:16:14,684 --> 00:16:15,651 So I'm going to clear that up. 426 00:16:15,685 --> 00:16:16,586 Keep on trucking. 427 00:16:17,920 --> 00:16:19,189 OK, nice. 428 00:16:19,222 --> 00:16:20,556 TORY BELLECI: OK. 429 00:16:20,590 --> 00:16:22,892 BISI EZERIOHA: So this second one is a not-so-abrupt stop. 430 00:16:22,925 --> 00:16:24,594 Right, if they eased into it. 431 00:16:24,627 --> 00:16:26,662 And then they actually stop the engine. 432 00:16:29,865 --> 00:16:32,235 BISI EZERIOHA: OK, that's good. 433 00:16:32,268 --> 00:16:34,270 Let's see how much we had there. 434 00:16:35,471 --> 00:16:36,539 260, so now-- 435 00:16:36,572 --> 00:16:37,740 TORY BELLECI: OK, so now what I'm going to do 436 00:16:37,773 --> 00:16:39,008 is, I'm going to turn off the engine. 437 00:16:39,109 --> 00:16:40,643 [music playing] BISI EZERIOHA: How does it feel? 438 00:16:40,676 --> 00:16:42,112 Does it-- does it-- so it's spongy or-- 439 00:16:42,112 --> 00:16:43,146 TORY BELLECI: It does. It feels good. 440 00:16:43,179 --> 00:16:44,114 All right-- - That's good. 441 00:16:46,849 --> 00:16:48,118 - Oh! - Oh! 442 00:16:48,118 --> 00:16:49,018 - Oh, boy-- - Here we go. 443 00:16:49,119 --> 00:16:49,819 --she wants to go. 444 00:16:52,888 --> 00:16:53,889 I'm kind of afraid. 445 00:16:57,460 --> 00:16:58,728 TORY BELLECI: All right, so this is it. 446 00:17:09,639 --> 00:17:12,708 BISI EZERIOHA: Oh, it stops, uh-uh. 447 00:17:12,742 --> 00:17:15,411 All right, well, let's go back to the starting line. 448 00:17:16,646 --> 00:17:18,348 In that first run, we didn't open the brake line 449 00:17:18,381 --> 00:17:19,949 enough to make the brakes fail. 450 00:17:19,982 --> 00:17:21,851 Let's crank it up a little bit more this time. 451 00:17:21,884 --> 00:17:23,686 BISI EZERIOHA: And see if we can bleed it some more. 452 00:17:24,820 --> 00:17:25,688 And we'll bleed it some more, all right. 453 00:17:26,722 --> 00:17:27,990 BISI EZERIOHA: By turning our wrench 454 00:17:28,023 --> 00:17:30,826 the same amount as our bench test, 20% of a full turn. 455 00:17:31,794 --> 00:17:33,296 And I will top off the brake fluid. 456 00:17:39,202 --> 00:17:40,002 I'm kind of nervous. 457 00:17:40,035 --> 00:17:41,637 I just get a little nervous. 458 00:17:41,671 --> 00:17:45,308 Oh, it's like wait, we are intentionally 459 00:17:45,341 --> 00:17:46,676 making our brakes fail. 460 00:17:46,709 --> 00:17:47,477 BISI EZERIOHA: Fail. 461 00:17:51,781 --> 00:17:53,183 Why are you revving? - I don't know. 462 00:17:53,183 --> 00:17:53,916 Oh my god! 463 00:17:53,949 --> 00:17:54,917 I'm excited. 464 00:17:54,950 --> 00:17:55,918 Here we go. 465 00:17:55,951 --> 00:17:56,719 OK. 466 00:17:58,288 --> 00:17:59,255 So the first stop is abrupt. 467 00:18:02,925 --> 00:18:04,327 All right, we've got to stop. 468 00:18:04,360 --> 00:18:05,761 OK, 569. 469 00:18:08,931 --> 00:18:10,233 So the second one, it wasn't so abrupt. 470 00:18:10,266 --> 00:18:11,767 TORY BELLECI: Yeah, it was more of a feather-- 471 00:18:11,801 --> 00:18:12,568 Yeah. 472 00:18:12,602 --> 00:18:13,569 --regular stop. 473 00:18:15,471 --> 00:18:16,606 What was that? 474 00:18:16,639 --> 00:18:17,807 Oh! 475 00:18:17,840 --> 00:18:21,211 We're at 223, just 15 PSI above the failure point. 476 00:18:21,244 --> 00:18:22,011 BISI EZERIOHA: Yeah. 477 00:18:22,912 --> 00:18:23,713 How does that feel? 478 00:18:23,746 --> 00:18:24,514 It feels pretty good. 479 00:18:24,547 --> 00:18:25,615 It feels good still. 480 00:18:25,648 --> 00:18:29,018 Yeah, so-- and then they stop their engine. 481 00:18:29,051 --> 00:18:30,119 BISI EZERIOHA: Right. 482 00:18:30,220 --> 00:18:32,488 TORY BELLECI: So now this is the last attempt 483 00:18:32,522 --> 00:18:35,325 to see if we can stop. 484 00:18:40,430 --> 00:18:42,097 BISI EZERIOHA: I don't know what's going to happen. 485 00:18:42,932 --> 00:18:44,234 I'm cautiously titillated. 486 00:18:45,635 --> 00:18:47,237 You're cautiously titillated. 487 00:18:47,237 --> 00:18:47,970 Yes. 488 00:18:49,805 --> 00:18:51,241 TORY BELLECI: This is the moment of truth. 489 00:18:52,675 --> 00:18:54,244 Here we go into our last stop. 490 00:19:00,115 --> 00:19:02,252 All right, here comes our stop. 491 00:19:03,619 --> 00:19:04,587 This is it. 492 00:19:04,620 --> 00:19:05,588 This better work. 493 00:19:05,621 --> 00:19:06,622 24 miles an hour. 494 00:19:07,723 --> 00:19:08,591 Oh, shoot! 495 00:19:25,408 --> 00:19:27,577 TORY BELLECI: Yeah, I forgot about the emergency brake. 496 00:19:30,513 --> 00:19:33,048 Oh my god, well, guess what? 497 00:19:33,082 --> 00:19:34,417 Myth is confirmed. 498 00:19:37,186 --> 00:19:39,088 And we were going 25 miles an hour 499 00:19:39,121 --> 00:19:40,390 when we hit those water barrels. 500 00:19:40,423 --> 00:19:42,392 That water barrel, it was like almost hitting a wall. 501 00:19:44,294 --> 00:19:45,395 Why are you so excited? 502 00:19:45,428 --> 00:19:46,195 Because we survived. 503 00:19:46,296 --> 00:19:47,297 It was terrifying. 504 00:19:47,297 --> 00:19:49,164 And better yet, we confirmed the myth. 505 00:19:49,198 --> 00:19:50,433 Yeah, but-- 506 00:19:50,466 --> 00:19:52,535 You-- you can open the brake line just enough to get 507 00:19:52,568 --> 00:19:54,304 two stops and then nothing. 508 00:19:54,304 --> 00:19:55,738 We did it Bisi. 509 00:19:55,771 --> 00:19:58,007 I have no idea why he's so excited. 510 00:19:59,108 --> 00:20:00,876 So look at the pressure that we generated 511 00:20:00,910 --> 00:20:03,446 in our hydraulic system after the second-- 512 00:20:03,479 --> 00:20:04,580 TORY BELLECI: Ah, 191 PSI. 513 00:20:04,614 --> 00:20:07,350 BISI EZERIOHA: 191 PSI, which is below our 208 514 00:20:07,383 --> 00:20:08,250 that we saw on the bench. 515 00:20:08,284 --> 00:20:09,118 That's beautiful. 516 00:20:09,151 --> 00:20:10,653 The barrels were a good idea, no? 517 00:20:10,686 --> 00:20:11,921 Yeah, a very good idea. 518 00:20:11,954 --> 00:20:13,255 But at least our van is still intact. 519 00:20:13,289 --> 00:20:14,457 And you know what that means? 520 00:20:14,490 --> 00:20:15,358 We'll get burgers. 521 00:20:15,391 --> 00:20:16,459 I'm actually quite hungry. 522 00:20:16,492 --> 00:20:17,960 Yeah, all that adrenaline makes me hungry. 523 00:20:17,993 --> 00:20:19,495 Oh, no, no, we have to fix the brakes first. 524 00:20:19,529 --> 00:20:22,031 Uh, good-- good-- good plan-- good plan. 525 00:20:22,865 --> 00:20:23,633 All right. 526 00:20:24,767 --> 00:20:26,669 BISI EZERIOHA: This is my dream come true. 527 00:20:29,138 --> 00:20:32,742 Yeah, could I get a French fries and a small milkshake. 528 00:20:40,850 --> 00:20:41,884 How much? 529 00:20:41,917 --> 00:20:45,187 [laughs] What do you think of our van?