WEBVTT 00:00:00.500 --> 00:00:05.560 They say an Englishman's home is his castle, and this is mine. 00:00:05.600 --> 00:00:09.080 Some say it's a bit on the big side for one person, 00:00:09.120 --> 00:00:11.880 but, well, it's somewhere to lay my head. 00:00:11.920 --> 00:00:15.160 Yes, I'm just a regular guy living in a standard gaff, 00:00:15.200 --> 00:00:17.040 leading an ordinary existence 00:00:17.080 --> 00:00:20.600 and struggling to answer all of life's big question. 00:00:20.640 --> 00:00:24.320 Like, why can't I feed the dog while relaxing in the garden? 00:00:24.360 --> 00:00:26.840 Is it possible for me to boil the kettle 00:00:26.880 --> 00:00:29.440 while I perform my morning ablutions? 00:00:29.480 --> 00:00:33.760 And why can't I cook my sausages while writing my memoirs? 00:00:33.800 --> 00:00:37.760 I'm sure there are neat but dreary digital solutions available, 00:00:37.800 --> 00:00:40.520 but who wants to do this 00:00:40.560 --> 00:00:42.120 when you could do this? 00:00:48.440 --> 00:00:50.320 It's just better. 00:00:50.360 --> 00:00:52.840 So I'm holding a knockout tournament... 00:00:52.880 --> 00:00:54.680 This already feels dangerous. 00:00:54.720 --> 00:00:57.000 ..where teams of amateur engineers... 00:00:58.480 --> 00:01:01.080 ..will compete to perform my ordinary chores 00:01:01.120 --> 00:01:02.880 in extraordinary ways... 00:01:02.920 --> 00:01:04.680 I love it when a plan comes together. 00:01:04.720 --> 00:01:08.120 ..with chain reaction machines... 00:01:08.160 --> 00:01:10.083 ..crazy contraptions made famous 00:01:10.107 --> 00:01:11.760 by viral videos 00:01:11.800 --> 00:01:16.000 that involve linking up everyday objects to magical effect. 00:01:19.480 --> 00:01:23.720 Chain reaction guru Zach Umperovitch is the fearsome judge. 00:01:23.760 --> 00:01:26.080 That better work perfectly the first time. 00:01:26.120 --> 00:01:27.600 Oh, you stupid thing. 00:01:29.600 --> 00:01:34.080 Dr Shini Somara will reveal the science inside the machines. 00:01:35.120 --> 00:01:36.600 And, at the end of it all, 00:01:36.640 --> 00:01:39.800 one team will be crowned Chain Reaction Champions. 00:01:51.560 --> 00:01:53.720 It's a crisis we all dread. 00:01:53.760 --> 00:01:55.680 You're luxuriating in an early morning bath, 00:01:55.720 --> 00:01:58.120 complete with the finest essential oils, 00:01:58.160 --> 00:02:01.520 and then a familiar sense of doom descends. 00:02:01.560 --> 00:02:03.560 You've forgotten to make the bed. 00:02:03.600 --> 00:02:07.640 To do so now would involve getting out of your luxurious bath 00:02:07.680 --> 00:02:09.920 and making a soggy walk out of the bathroom 00:02:09.960 --> 00:02:12.560 and across the landing back to the bedroom. 00:02:12.600 --> 00:02:14.800 Is it possible to build a machine 00:02:14.840 --> 00:02:17.920 that would allow all of us to straighten the duvet 00:02:17.960 --> 00:02:19.800 without leaving the tub? 00:02:21.040 --> 00:02:22.280 To help me find out, 00:02:22.320 --> 00:02:24.960 I've invited three engineering siblings 00:02:25.000 --> 00:02:27.440 and a quartet from Loughborough University 00:02:27.480 --> 00:02:30.520 to the test lab in one of my many outbuildings. 00:02:30.560 --> 00:02:33.160 I may be eccentric, but I'm not completely mad. 00:02:33.200 --> 00:02:34.760 I'm not letting the teams in here. 00:02:34.800 --> 00:02:36.560 Instead, I've provided each team 00:02:36.600 --> 00:02:39.160 with their own set of rooms just like mine 00:02:39.200 --> 00:02:42.480 and workshops packed with objects they can use in their build. 00:02:42.520 --> 00:02:44.080 It's why he's so hyper the whole time. 00:02:44.120 --> 00:02:47.880 Who's in charge? Fifth member of the team we never talked about! 00:02:47.920 --> 00:02:49.720 They've got three days. 00:02:49.760 --> 00:02:52.800 On day one, they need to start at my luxurious bath 00:02:52.840 --> 00:02:54.360 and cross the bathroom. 00:02:54.400 --> 00:02:57.120 Then on day two, they need to traverse my landing, 00:02:57.160 --> 00:02:59.880 and on day three, they need to build across the bedroom 00:02:59.920 --> 00:03:01.120 and make the bed. 00:03:02.440 --> 00:03:04.040 Croquet mallets. 00:03:04.080 --> 00:03:06.640 We're just beating each other up. Could use them for something. 00:03:06.680 --> 00:03:09.320 Do you now you think it's quite funny, having the idea of, like, 00:03:09.360 --> 00:03:11.360 sewage coming out of the toilet? 00:03:11.400 --> 00:03:13.040 Right now, they're making plans 00:03:13.080 --> 00:03:15.800 under the watchful eyes of our expert judge. 00:03:15.840 --> 00:03:19.440 He's a two time chain reaction machine world record holder 00:03:19.480 --> 00:03:23.160 and creator of some of the most ambitious machines ever built. 00:03:23.200 --> 00:03:25.000 He's Zach Umperovitch. 00:03:25.040 --> 00:03:26.920 I just love chain reaction machines, 00:03:26.960 --> 00:03:29.120 the absurd, cartoonish nature of them. 00:03:29.160 --> 00:03:30.920 They're started by human touch 00:03:30.960 --> 00:03:34.320 but then each individual object triggers one after the other 00:03:34.360 --> 00:03:36.080 until the task is solved. 00:03:36.120 --> 00:03:39.520 Some of my machines take weeks, even months, to build, 00:03:39.560 --> 00:03:43.400 but we've asked our teams to build them in just three days. 00:03:43.440 --> 00:03:46.280 So who's turned up to turn down my bed 00:03:46.320 --> 00:03:48.800 for this housekeeping inspired contest? 00:03:50.960 --> 00:03:53.080 In the red corner, Technical Knockout. 00:03:53.120 --> 00:03:54.960 I'm looking forward to lifting the trophy. 00:03:55.000 --> 00:03:59.160 Yeah, trophy's good. Yeah, yeah, yeah. WHEN we win. Yeah. 00:03:59.200 --> 00:04:02.840 Alasdair, Kevin and Owen, 00:04:02.880 --> 00:04:05.600 a trio of egghead engineering students, 00:04:05.640 --> 00:04:09.040 and their lecturer, Paul, from Loughborough University. 00:04:09.080 --> 00:04:12.320 There is a competitive streak that runs through this place, and we can't help it. 00:04:12.360 --> 00:04:14.320 We're the best university in the world. 00:04:14.360 --> 00:04:16.240 We're top dogs here. Ha-ha, yeah! 00:04:18.720 --> 00:04:20.120 All right. Here we go. 00:04:20.160 --> 00:04:22.200 Paul is our creative director. 00:04:22.240 --> 00:04:24.080 Oh, I like that! He still thinks he's 20. 00:04:24.120 --> 00:04:27.520 Nice. Best thing to do now is go test it. 00:04:27.560 --> 00:04:29.200 Owen's about intricacy. 00:04:29.240 --> 00:04:31.040 He's very good with the fine details. 00:04:31.080 --> 00:04:33.040 That's a good extension. Three, two, one. 00:04:33.080 --> 00:04:35.640 Kevin loves a bit technology. He's our numbers man. 00:04:35.680 --> 00:04:37.760 Do you want to tell us what that new angle should be? 00:04:37.800 --> 00:04:40.760 I think I'm more the sort of "pull it off at the last second" sort of guy. 00:04:40.800 --> 00:04:42.440 56. 56 degrees. 00:04:42.480 --> 00:04:44.400 We ain't out here to lose this competition. 00:04:44.440 --> 00:04:45.800 We know we're good. 00:04:48.200 --> 00:04:49.400 Whoa! 00:04:49.440 --> 00:04:52.320 Morning. Good morning, Team Technical Knockout. That's us. 00:04:52.360 --> 00:04:55.760 As a building style, what can we anticipate 00:04:55.800 --> 00:04:57.600 from you guys, straight from room one? 00:04:57.640 --> 00:04:59.880 There's going to be a lot of chaos. Chaos? Yeah. 00:04:59.920 --> 00:05:02.480 With engineering undertone. How about that? That sounds good. 00:05:02.520 --> 00:05:05.280 Yeah, sliding in there a bit. Controlled chaos. Controlled chaos. 00:05:05.320 --> 00:05:09.160 Technical Knockout will need to be at their chaotic best 00:05:09.200 --> 00:05:12.400 because their opponents are a team for whom building to order 00:05:12.440 --> 00:05:13.880 is an everyday affair... 00:05:13.920 --> 00:05:15.480 ..nice hat. 00:05:15.520 --> 00:05:19.840 The Fieldhouse Brothers, Adam, Damien and Robin. 00:05:22.040 --> 00:05:26.080 We design and manufacture bespoke engineering devices. 00:05:26.120 --> 00:05:30.080 Three brothers from Somerset who see eye to eye on, 00:05:30.120 --> 00:05:31.640 well, nothing. 00:05:31.680 --> 00:05:33.120 I often fall out with these two, 00:05:33.160 --> 00:05:35.920 and I think that's going to be quite a tricky thing to navigate. Yeah. 00:05:35.960 --> 00:05:38.520 The trouble is, Damien will do something stupid and too complex 00:05:38.560 --> 00:05:39.920 that's never going to work. Yeah. 00:05:39.960 --> 00:05:43.000 And I'll have to turn up at the end and simplify it and make it actually work. 00:05:43.040 --> 00:05:45.360 And then I'm going to have to fix what Adam's done, as well. 00:05:45.400 --> 00:05:47.000 It's a competition between us, really. 00:05:47.040 --> 00:05:48.840 Oh, yeah, woohoo! 00:05:48.880 --> 00:05:51.840 When we were growing up, we always built treehouses, 00:05:51.880 --> 00:05:53.108 zipwires, and we dug, like, pools 00:05:53.132 --> 00:05:54.360 and stuff like that. Yeah. 00:05:54.400 --> 00:05:57.440 And we had, like, a shed with sort of loads of random things in it. 00:05:57.480 --> 00:05:59.520 And we didn't have very good internet connection 00:05:59.560 --> 00:06:01.920 so we just had to go outside and just do stuff 00:06:01.960 --> 00:06:04.000 with the materials around us. Yeah. 00:06:04.040 --> 00:06:06.280 Go! Yes! 00:06:06.320 --> 00:06:09.440 No-one likes losers, do they? So we're not going to lose. 00:06:09.480 --> 00:06:11.880 Go on! Go on, yes! Yes! 00:06:11.920 --> 00:06:14.000 Fieldhouse Brothers, very nice to see you. 00:06:14.040 --> 00:06:15.440 Do you have a plan? 00:06:15.480 --> 00:06:18.320 Do you want to hear our steps and how we're planning to connect them? 00:06:18.360 --> 00:06:20.680 Make it snappy, brief and wildly entertaining 00:06:20.720 --> 00:06:22.560 and yes, I do. 00:06:22.600 --> 00:06:24.400 So we're going to have... 00:06:24.440 --> 00:06:26.160 We're going to have a wine bottle here. 00:06:26.200 --> 00:06:27.360 It's going to fall over. 00:06:27.400 --> 00:06:29.200 It's going to fill up the scales. 00:06:29.240 --> 00:06:31.000 We're just going to lift up the candle, 00:06:31.040 --> 00:06:33.880 which is going to burn through some toilet paper 00:06:33.920 --> 00:06:35.520 that will release a weight 00:06:35.560 --> 00:06:37.760 which will dislodge one end of this dresser. 00:06:37.800 --> 00:06:39.920 There's going to be a bit of soap on top of the lamp. 00:06:39.960 --> 00:06:42.000 It's going to do an outrageous jump. Loop the loop. 00:06:42.040 --> 00:06:43.440 And then it's going to land here, 00:06:43.480 --> 00:06:45.320 which is going to open the toilet seat 00:06:45.360 --> 00:06:48.000 and then this car is going to come out with a bit of poo on it, 00:06:48.040 --> 00:06:49.680 across the floor and into the room. 00:06:49.720 --> 00:06:52.000 I'm going to be perfectly honest. 00:06:52.040 --> 00:06:54.480 I stopped listening at the word "burn". 00:06:56.240 --> 00:06:58.080 The Fieldhouse Brothers will begin 00:06:58.120 --> 00:06:59.760 by knocking over a bottle of wine 00:06:59.800 --> 00:07:01.520 to tip scales that lift a candle, 00:07:01.560 --> 00:07:04.040 which burns through a length of toilet paper 00:07:04.080 --> 00:07:06.360 that's holding up a collapsing cabinet, 00:07:06.400 --> 00:07:10.040 which releases a toilet roll that triggers a mousetrap 00:07:10.080 --> 00:07:13.160 to release a bar of soap that jumps from the sink into a bucket 00:07:13.200 --> 00:07:15.840 that lifts the toilet seat to release a kid's toy car 00:07:15.880 --> 00:07:17.160 to exit the room, 00:07:17.200 --> 00:07:19.680 complete with a "calling card" attached. 00:07:21.760 --> 00:07:23.240 Let's go. 00:07:23.280 --> 00:07:27.000 It's a complex plan that could be tough to realise. 00:07:27.040 --> 00:07:28.440 Just saw it and... 00:07:28.480 --> 00:07:32.080 But Robin's clearly got form with collapsing bathroom cabinets. 00:07:32.120 --> 00:07:33.920 Measure once, cut twice? 00:07:33.960 --> 00:07:37.440 Turns out all you need is a saw, a drill and some hinges. 00:07:38.760 --> 00:07:40.520 He must be very proud. 00:07:40.560 --> 00:07:41.800 Perfect. 00:07:43.040 --> 00:07:44.360 Meanwhile, Adam and Damien 00:07:44.400 --> 00:07:47.000 are starting on the candle and toilet transitions. 00:07:47.040 --> 00:07:48.600 Start off strong with toilet seat. 00:07:48.640 --> 00:07:50.400 I'm going to drill a hole through here, 00:07:50.440 --> 00:07:53.680 mount a spring, which will allow the toilet seat to spring up. 00:07:53.720 --> 00:07:55.880 I think there's a few hairs down this toilet as well. 00:07:55.920 --> 00:07:58.000 But hopefully I'll be done with this job pretty soon 00:07:58.040 --> 00:07:59.600 and I can move on to something nicer. 00:07:59.640 --> 00:08:01.800 You just get on with your toilet and I'll get on with my bath. 00:08:01.840 --> 00:08:03.320 They warned us there'd be bickering. 00:08:03.360 --> 00:08:05.120 We're just trying to steer clear of each other. 00:08:05.160 --> 00:08:06.760 And then when someone's step goes wrong, 00:08:06.800 --> 00:08:08.520 we'll just blame him when it doesn't work. 00:08:08.560 --> 00:08:10.800 But so soon? I'm going to have to come and sort out his bath 00:08:10.840 --> 00:08:12.280 in a minute when he's messed it up. 00:08:12.320 --> 00:08:13.840 Hot on their opponents' heels, 00:08:13.880 --> 00:08:16.520 Technical Knockout are also brainstorming a plan. 00:08:16.560 --> 00:08:18.880 So we've got step one is duck moving along the bath. 00:08:18.920 --> 00:08:21.360 Step two is the soap on a rope. 00:08:21.400 --> 00:08:24.880 Yeah. Step three is a towel rail falling, so that pulls out 00:08:24.920 --> 00:08:27.520 and then we've now got the toilet over here. 00:08:27.560 --> 00:08:31.720 So the grand plan is this thing called elephant's toothpaste, 00:08:31.760 --> 00:08:34.000 which is a chemical reaction, 00:08:34.040 --> 00:08:35.920 and we want to flush the toilet 00:08:35.960 --> 00:08:38.400 and have this eruption of foam, 00:08:38.440 --> 00:08:40.240 which should start the next thing. 00:08:40.280 --> 00:08:42.760 Just in case that wasn't clear, 00:08:42.800 --> 00:08:45.880 a giant rubber duck will pull a brick off the bath, 00:08:45.920 --> 00:08:48.280 which in turn pulls over a towel rail 00:08:48.320 --> 00:08:50.440 that yanks the plug from the full sink, 00:08:50.480 --> 00:08:53.720 that drains it into a container hanging on the toilet flusher. 00:08:53.760 --> 00:08:55.400 That will pull down the handle, 00:08:55.440 --> 00:08:57.000 adding chemicals to the bowl 00:08:57.040 --> 00:09:01.080 to unleash their explosive elephant's toothpaste reaction. 00:09:01.120 --> 00:09:03.160 It's ambitious, it's anarchic, 00:09:03.200 --> 00:09:05.760 and for now, it's as far as they've got. 00:09:05.800 --> 00:09:08.720 Shall we just go have a look at it? Let's go and have a look inside. Yeah. 00:09:08.760 --> 00:09:10.800 They're starting with the messiest job: 00:09:10.840 --> 00:09:12.520 the chemical reaction in the toilet... 00:09:12.560 --> 00:09:15.400 I'm going to need more than just a tetanus jab. Yeah! 00:09:15.440 --> 00:09:17.400 OK, piece of pipe goes on there. All right. 00:09:17.440 --> 00:09:19.040 Then we put a bolt through the end. 00:09:19.080 --> 00:09:20.280 ..and Ali looks like a pro. 00:09:20.320 --> 00:09:22.120 We can make a plug. We can make a plug. 00:09:22.160 --> 00:09:23.800 Take a toilet cistern, 00:09:23.840 --> 00:09:25.480 add a funnel, a cork, 00:09:25.520 --> 00:09:27.320 a chain and plastic pipe... 00:09:28.480 --> 00:09:31.760 ..hey, presto, you've got a chemical mixer. 00:09:31.800 --> 00:09:36.040 I reckon this funnel over here seals... 00:09:36.080 --> 00:09:38.080 Right, let's go and have a snoop around theirs. 00:09:38.120 --> 00:09:41.160 It's such a good start that Ali's feeling like upping the ante. 00:09:41.200 --> 00:09:44.120 I will make tea every single time that you ask of me... 00:09:44.160 --> 00:09:45.760 Oh, I need you on this job. 00:09:45.800 --> 00:09:48.840 ..OK, if yours works first time and ours doesn't. 00:09:48.880 --> 00:09:50.280 Well, I'll take that. Yeah. 00:09:50.320 --> 00:09:53.400 I think I'm in for that. Happy day. I am definitely in for that. Yeah. 00:09:53.440 --> 00:09:55.440 The stakes are higher than ever, 00:09:55.480 --> 00:09:59.360 so Damien's toilet stage really needs to do the business. 00:09:59.400 --> 00:10:02.560 There's a delicate balancing act here. 00:10:02.600 --> 00:10:03.840 Three, two one. 00:10:05.160 --> 00:10:06.960 Meanwhile, Adam is perfecting 00:10:07.000 --> 00:10:09.520 the opening scales and candle transition... 00:10:12.960 --> 00:10:15.160 ..before starting the jumping soap 00:10:15.200 --> 00:10:17.160 that will trigger Damien's toilet. 00:10:19.080 --> 00:10:21.000 That'll work. Sounds simple enough. 00:10:21.040 --> 00:10:23.760 Oh! I don't really want to be picking this up all the time, Adam. 00:10:27.280 --> 00:10:29.680 What was it about trying the same thing again and again 00:10:29.720 --> 00:10:31.960 and expecting different results? 00:10:32.000 --> 00:10:33.840 Mark of genius? Something like that. 00:10:35.840 --> 00:10:37.680 When do we give up on that, Adam? 00:10:37.720 --> 00:10:40.480 Teams, you have four hours left. 00:10:42.640 --> 00:10:44.120 Do you want to drill like that? 00:10:44.160 --> 00:10:45.960 With test runs approaching, 00:10:46.000 --> 00:10:48.560 Kevin and Owen are working on the start of their machine. 00:10:48.600 --> 00:10:49.800 Excellent. Does the job. 00:10:49.840 --> 00:10:51.160 Going to attach a towel to plug. 00:10:51.200 --> 00:10:53.280 Yeah, then it yanks it out. Easy as pie. 00:10:53.320 --> 00:10:54.880 I'm sure this precision work 00:10:54.920 --> 00:10:58.280 will make Loughborough Uni's engineering department very proud. 00:10:59.960 --> 00:11:01.160 Hey! 00:11:03.240 --> 00:11:06.320 Paul's doing his bit, too, at the end of the machine. 00:11:06.360 --> 00:11:09.160 So the plan's to have a washing line in the bathroom, 00:11:09.200 --> 00:11:12.120 so we're going to put a big, heavy wash bag at the top. 00:11:12.160 --> 00:11:15.360 And the idea is that once our toilet's exploded, 00:11:15.400 --> 00:11:18.000 it will burst the toilet paper, which will drop a smaller weight, 00:11:18.040 --> 00:11:21.360 which will then just pull this heavy mass from this very big height 00:11:21.400 --> 00:11:23.360 and very rapidly swing our washing line 00:11:23.400 --> 00:11:25.320 across the room into the hallway. 00:11:25.360 --> 00:11:28.920 So that should be plenty heavy enough. No issues there. 00:11:28.960 --> 00:11:32.640 And as for Ali, well, he's assumed the role of foreman. 00:11:32.680 --> 00:11:35.120 So we need to find out a rigging point for the pulleys. 00:11:35.160 --> 00:11:37.720 We'll go high there. Yeah. And then we're going to mount it 00:11:37.760 --> 00:11:40.200 to the underside of the door frame. So it should... And that way 00:11:40.240 --> 00:11:42.520 it's got a really nice slope on it. It'll look really good. 00:11:42.560 --> 00:11:44.600 OK, so, Owen, how's the bath looking? 00:11:44.640 --> 00:11:46.320 Winning. OK, cool. 00:11:46.360 --> 00:11:47.760 If it's OK with Ali, 00:11:47.800 --> 00:11:50.960 I'd like to check in with expert judge Zach. 00:11:51.000 --> 00:11:52.720 It's a long build today, 00:11:52.760 --> 00:11:56.160 but you could easily spend the first half of it dreaming big dreams 00:11:56.200 --> 00:11:59.040 and then realising you haven't got time to build something similar. 00:11:59.080 --> 00:12:01.360 And they have big dreams. Technical Knockout want to do 00:12:01.400 --> 00:12:04.320 an elephant's toothpaste reaction, if you've ever heard of that. 00:12:04.360 --> 00:12:05.920 It's going to ruin your bathroom. 00:12:05.960 --> 00:12:09.520 Have you seen the Fieldhouse brothers? They've got this crazy idea. 00:12:09.560 --> 00:12:13.280 They want a bar of soap that runs down into the basin 00:12:13.320 --> 00:12:15.520 and then jumps out of there. 00:12:15.560 --> 00:12:17.280 If it were an actual cartoon... 00:12:17.320 --> 00:12:19.240 I would love to see that. I really would. 00:12:19.280 --> 00:12:22.160 But to think of that being a reliable step? 00:12:22.200 --> 00:12:23.720 There's no way. 00:12:23.760 --> 00:12:27.720 It looks like everyone is coming to the same conclusion on soapgate... 00:12:29.040 --> 00:12:32.240 ..except Adam. Why did that not work? It's so confusing. 00:12:34.840 --> 00:12:37.360 Oh! Oh! So close! Where did it go? That was so close. 00:12:37.400 --> 00:12:39.960 I can put a mesh around that bucket pretty quickly. 00:12:40.000 --> 00:12:42.640 Sometimes you just need your big brother. 00:12:42.680 --> 00:12:45.320 Double sided sticky tape. Yeah, yeah. That's good. Go and get it. 00:12:45.360 --> 00:12:48.240 Wait, are we not going to do the whole thing? Yeah, we are. We are. 00:12:48.280 --> 00:12:50.000 With no flying soap, 00:12:50.040 --> 00:12:53.240 Technical Knockout are ready to find out if their foaming toilet 00:12:53.280 --> 00:12:55.160 is as disgusting as it sounds. 00:12:55.200 --> 00:12:56.640 Go. 00:12:56.680 --> 00:12:59.760 Did it release? Yeah. Plug's gone. 00:13:01.360 --> 00:13:03.520 This is going to go on for bloody yonks now. 00:13:03.560 --> 00:13:07.160 More glory for the engineering department at Loughborough. 00:13:07.200 --> 00:13:09.640 But with less than an hour until test runs, 00:13:09.680 --> 00:13:13.840 Technical Knockout are committing a chain reaction cardinal sin... 00:13:13.880 --> 00:13:17.120 Is it that that is too boring and that needs to fall over? 00:13:17.160 --> 00:13:18.680 ..a rethink late in the day. 00:13:18.720 --> 00:13:21.160 Do you know what it is? You can't see what's happening in the sink. 00:13:21.200 --> 00:13:23.360 We just need to find a way of pulling the plug differently. 00:13:23.400 --> 00:13:26.760 Do you see how long we've got, though, guys? So the step that's missing is filling that. 00:13:26.800 --> 00:13:29.680 Just fill it somehow from here... Yeah, I like that. I like that. 00:13:29.720 --> 00:13:33.400 You can see there's been considerable change since the last time we looked at them, 00:13:33.440 --> 00:13:36.400 and I think they realised they need more variety than that toilet 00:13:36.440 --> 00:13:40.760 and that zip line. I think they're doing the right thing, but... 00:13:40.800 --> 00:13:42.600 It's quite late for redesigning. 00:13:42.640 --> 00:13:44.600 There is not long left. Oh, geez. 00:13:44.640 --> 00:13:46.400 Quick reset. 00:13:47.960 --> 00:13:51.200 Teams, five minutes. 00:13:51.240 --> 00:13:52.520 No pressure, but you have 00:13:52.560 --> 00:13:55.200 five minutes build time. Five minutes! Let's get it done. 00:13:55.240 --> 00:13:57.400 No panic. Carry on. 00:13:57.440 --> 00:13:59.360 Running. Running's good. 00:13:59.400 --> 00:14:02.920 Running with sharp things and tools, excellent. Proof of that. 00:14:04.680 --> 00:14:06.280 There's no need to panic. 00:14:06.320 --> 00:14:07.800 Why is it not full? 00:14:07.840 --> 00:14:09.160 Don't panic! 00:14:09.200 --> 00:14:11.760 You don't need to mop the floor, Damien. That's not essential. 00:14:11.800 --> 00:14:13.320 It is. We haven't got time! 00:14:14.320 --> 00:14:16.560 Ten seconds, everybody. Just ten seconds left. 00:14:16.600 --> 00:14:18.240 There are ten seconds remaining 00:14:18.280 --> 00:14:20.240 and it took me five seconds to tell you that 00:14:20.280 --> 00:14:21.680 so there's only five, 00:14:21.720 --> 00:14:23.560 four, three, 00:14:23.600 --> 00:14:25.800 two, one. 00:14:25.840 --> 00:14:28.760 Stop! Tools down, please. 00:14:30.040 --> 00:14:32.040 So, after ten frantic hours, 00:14:32.080 --> 00:14:35.720 we have what looks like two chain reaction machines, 00:14:35.760 --> 00:14:37.840 but with tomorrow's tea making at stake, 00:14:37.880 --> 00:14:39.920 can either make it out of the bathroom? 00:14:41.840 --> 00:14:44.280 First up, it's Technical Knockout. 00:14:44.320 --> 00:14:47.040 They'll be hoping that their falling duck and brick 00:14:47.080 --> 00:14:50.720 will trigger the hastily built water run to top up the sink 00:14:50.760 --> 00:14:53.520 and tip the towel rail to pull the plug, 00:14:53.560 --> 00:14:56.080 triggering the toilet flush to set off 00:14:56.120 --> 00:14:58.200 the elephant's toothpaste reaction, 00:14:58.240 --> 00:15:02.200 dissolving the toilet roll to release the first of two weights 00:15:02.240 --> 00:15:04.800 that send the shower curtain and pants 00:15:04.840 --> 00:15:09.360 across the room to knock an ironing board into the landing. 00:15:09.400 --> 00:15:13.560 Team Technical Knockout, the moment of truth for today is near. 00:15:13.600 --> 00:15:15.720 How are you feeling it's going to go? 00:15:15.760 --> 00:15:18.080 Apprehensive, nervous. I'm with Alasdair on this one. 00:15:18.120 --> 00:15:19.520 I've not seen it tested, so... 00:15:19.560 --> 00:15:21.040 Right. I'm handing it over to you. 00:15:21.080 --> 00:15:23.320 Start your machine when you're ready. Paul, are you ready? 00:15:23.360 --> 00:15:25.560 I am absolutely ready. Go. OK, ducks away. 00:15:28.200 --> 00:15:29.400 Yes, yes, yes... 00:15:29.440 --> 00:15:30.520 YES, come on! 00:15:32.600 --> 00:15:34.120 Oh... Is it going? It's going. 00:15:34.160 --> 00:15:36.880 Please foam, please foam, please foam. 00:15:36.920 --> 00:15:38.760 That sounds good. That looks good. 00:15:38.800 --> 00:15:40.080 Has it flushed? Oh! Yes! 00:15:40.120 --> 00:15:41.440 Oh, look at that! 00:15:41.480 --> 00:15:43.480 That's the best one yet. 00:15:43.520 --> 00:15:45.040 Yes! 00:15:45.080 --> 00:15:47.040 No! Oh! 00:15:49.480 --> 00:15:53.040 The last minute bucket and water run worked a treat, 00:15:53.080 --> 00:15:55.800 pulling the plug to start the chemical reaction. 00:15:55.840 --> 00:15:58.120 The toilet roll dissolved as planned, 00:15:58.160 --> 00:16:00.440 but the weighted wash bag failed to fall 00:16:00.480 --> 00:16:03.000 and set off the shower curtain. 00:16:03.040 --> 00:16:05.760 Next, it's the Fieldhouse Brothers. 00:16:05.800 --> 00:16:08.880 They're hoping that the spilt wine will tip the scales, 00:16:08.920 --> 00:16:11.440 raising the candle to burn the toilet paper 00:16:11.480 --> 00:16:13.400 that will collapse the dresser, 00:16:13.440 --> 00:16:14.960 setting off a mousetrap 00:16:15.000 --> 00:16:18.000 that releases the time-consuming soap slide 00:16:18.040 --> 00:16:21.120 to land in the bucket and open the toilet seat, 00:16:21.160 --> 00:16:23.080 releasing the toy car. 00:16:23.120 --> 00:16:24.440 Fieldhouse Brothers, 00:16:24.480 --> 00:16:26.600 firstly, can I commend you on your storytelling? 00:16:26.640 --> 00:16:28.360 I mean, you've really gone for it there. 00:16:28.400 --> 00:16:31.080 It's Robin, mainly. He just loves wearing the shower cap. Yeah. 00:16:31.120 --> 00:16:32.480 Is it going to work? 00:16:32.520 --> 00:16:34.720 About 50% chance of it working first time. No, no, no. 00:16:34.760 --> 00:16:37.920 It's going to be mega. It's going to be 80% chance. 00:16:37.960 --> 00:16:40.080 I'm hoping it works. 00:16:40.120 --> 00:16:42.080 I've seen it work quite a few times. 00:16:42.120 --> 00:16:44.640 I've also seen it fail quite a few times so... Yeah. 00:16:44.680 --> 00:16:46.840 Well, boys, if you're ready, 00:16:46.880 --> 00:16:49.800 in your own time, start your machine. 00:16:49.840 --> 00:16:53.080 Come on, Robin. Tip that wine bottle. 00:16:53.120 --> 00:16:55.480 Oh! He's spilt his wine! Yeah. Oh, no! 00:16:56.920 --> 00:16:58.120 Oh, that might... 00:16:59.440 --> 00:17:00.880 It's lifted. 00:17:06.600 --> 00:17:08.120 Oh, my God! 00:17:08.160 --> 00:17:10.000 Yes! 00:17:10.040 --> 00:17:11.240 Boom! 00:17:12.760 --> 00:17:15.640 Smashed it! Don't look surprised! Sorry. Well done. 00:17:15.680 --> 00:17:17.400 Perfection from the brothers. 00:17:17.440 --> 00:17:19.960 Scales and candle, check. 00:17:20.000 --> 00:17:22.480 Collapsing dresser, check. 00:17:22.520 --> 00:17:25.240 Soap slide, amazingly, check, 00:17:25.280 --> 00:17:29.160 leaving the spring loaded toilet seat to do the rest. 00:17:29.200 --> 00:17:30.960 As day one draws to a close, 00:17:31.000 --> 00:17:33.000 there's plenty for our teams to reflect on. 00:17:33.040 --> 00:17:36.080 I think just that rush towards the end, we made a couple of simple mistakes. 00:17:36.120 --> 00:17:37.600 Yeah. Sorry, guys. That's on me. 00:17:37.640 --> 00:17:40.880 A few small tweaks and we're there. It is genuinely a few small, tiny tweaks. 00:17:40.920 --> 00:17:44.880 I've just had abuse all day about how unreliable 00:17:44.920 --> 00:17:47.560 some soap's going to be, jumping in a sink... 00:17:47.600 --> 00:17:50.800 You had enough time, didn't you? You had enough time to get it right. 00:17:50.840 --> 00:17:53.600 So the Fieldhouse Brothers will sleep easy tonight, 00:17:53.640 --> 00:17:55.640 but it could all change tomorrow. 00:18:00.320 --> 00:18:02.560 Two teams of engineering obsessives 00:18:02.600 --> 00:18:06.520 are building chain reaction machines that will allow me to make my bed 00:18:06.560 --> 00:18:10.120 without disturbing my relaxing soak in the tub. 00:18:10.160 --> 00:18:12.920 Yesterday, the teams built across the bathroom, 00:18:12.960 --> 00:18:16.440 where the Fieldhouse Brothers enjoyed a perfect run... 00:18:19.360 --> 00:18:20.640 Oh, my God! 00:18:20.680 --> 00:18:22.640 ..whilst their opponents Technical Knockout 00:18:22.680 --> 00:18:25.440 were thwarted by a weighted wash bag that failed to fall. 00:18:25.480 --> 00:18:26.960 No! Oh! 00:18:27.000 --> 00:18:29.880 Morning, teams. By the end of today, 00:18:29.920 --> 00:18:32.000 your bed making chain reaction machines 00:18:32.040 --> 00:18:34.080 need to have made it across the landing. 00:18:34.120 --> 00:18:37.560 There is a lot to do, which is why you're going to be glad 00:18:37.600 --> 00:18:39.240 I'm giving you something else. 00:18:39.280 --> 00:18:41.440 Because today, we want you to incorporate 00:18:41.480 --> 00:18:44.840 a specific scientific principle into your build. 00:18:44.880 --> 00:18:46.640 And that principle is 00:18:46.680 --> 00:18:48.920 angle of repose. 00:18:48.960 --> 00:18:53.400 Yeah. Don't mind where you employ it, but use it you must. 00:18:53.440 --> 00:18:57.240 You have ten hours to do it, so get building. 00:18:57.280 --> 00:18:59.280 Paul, what's an angle of repose? 00:18:59.320 --> 00:19:00.800 Are we talking about pivot? 00:19:00.840 --> 00:19:02.320 Change of angle? We don't know. 00:19:02.360 --> 00:19:04.120 No, no... Repose. That's pose. 00:19:04.160 --> 00:19:06.320 Oh. Then repose. 00:19:06.360 --> 00:19:08.120 There you go. That's it there! 00:19:08.160 --> 00:19:09.680 Right, this is just getting silly. 00:19:09.720 --> 00:19:11.280 But where's the angle? 00:19:11.320 --> 00:19:13.264 Hopefully Shini Somara 00:19:13.288 --> 00:19:15.720 can restore some order. 00:19:15.760 --> 00:19:19.680 Right now, at the top of this slope, I'm experiencing two major forces. 00:19:19.720 --> 00:19:22.400 One of them is because of my weight, due to gravity, 00:19:22.440 --> 00:19:25.000 that wants to drag me down this slope. 00:19:25.040 --> 00:19:28.440 And the other is a force acting in the opposite direction 00:19:28.480 --> 00:19:31.920 due to friction between the skis and the slope. 00:19:31.960 --> 00:19:34.640 When the slope is increased in angle... 00:19:36.040 --> 00:19:39.480 ..more of my weight wants to go down the slope, 00:19:39.520 --> 00:19:43.000 and there's a critical angle called the angle of repose, 00:19:43.040 --> 00:19:47.200 where gravity overcomes frictional forces 00:19:47.240 --> 00:19:49.560 and I go sliding down the slope. 00:19:51.120 --> 00:19:54.200 And that is the principle of the angle of repose, 00:19:54.240 --> 00:19:56.880 making things slide. 00:19:56.920 --> 00:20:01.520 Back at base, Technical Knockout are already planning their early stages, 00:20:01.560 --> 00:20:03.680 including the scientific principle. 00:20:03.720 --> 00:20:08.280 Part one is iron board, ladders go over. 00:20:08.320 --> 00:20:11.120 And we've got a paint can that's going to swing over here. 00:20:11.160 --> 00:20:13.080 With a trip wire. Yeah. 00:20:13.120 --> 00:20:15.960 Assuming they can fix their bathroom stages, 00:20:16.000 --> 00:20:18.640 the falling ironing board will topple a ladder 00:20:18.680 --> 00:20:20.520 that drops a paint can pendulum, 00:20:20.560 --> 00:20:22.280 which catches a trip wire 00:20:22.320 --> 00:20:23.880 that releases a weight, 00:20:23.920 --> 00:20:26.240 which lifts a zip line attached to a hat stand 00:20:26.280 --> 00:20:29.720 to create the angle of repose to send a picture frame sliding. 00:20:29.760 --> 00:20:32.560 A plan that's uncomplicated, unfussy, 00:20:32.600 --> 00:20:34.040 and unfinished. 00:20:35.960 --> 00:20:38.000 The sliding picture frame will be crucial 00:20:38.040 --> 00:20:40.440 to their demonstration of the angle of repose, 00:20:40.480 --> 00:20:43.120 so that's where Kevin and Owen are starting. 00:20:43.160 --> 00:20:45.720 OWEN: OK, this will be effectively bolted onto there. 00:20:45.760 --> 00:20:48.000 And this is going to be able to hang from the wire, 00:20:48.040 --> 00:20:50.120 and you can see, it just spins freely. 00:20:50.160 --> 00:20:52.000 KEVIN: So, yeah, nothing crazy. 00:20:52.040 --> 00:20:54.920 Next door, the Fieldhouse Brothers 00:20:54.960 --> 00:20:56.480 are back in the bathroom, 00:20:56.520 --> 00:20:59.720 but there may be method in their madness. 00:20:59.760 --> 00:21:01.800 So as long as those cars hit that mark... 00:21:01.840 --> 00:21:06.480 The car comes up here, hits into some kind of... Swinging mechanism. 00:21:06.520 --> 00:21:09.720 ..swinging broom or something in keeping with the room, 00:21:09.760 --> 00:21:12.560 and then we've got double dominoes going across the top, 00:21:12.600 --> 00:21:15.400 so it's going to go... dominoes that way, dominoes back. 00:21:15.440 --> 00:21:19.200 They're planning to use the toy car from the bathroom 00:21:19.240 --> 00:21:23.120 to release a mallet that falls on the controller for a slot car 00:21:23.160 --> 00:21:25.800 that drives up a ramp to strike a lever 00:21:25.840 --> 00:21:28.640 that starts a run of book dominoes on a book shelf 00:21:28.680 --> 00:21:32.320 that fall not once but twice before releasing a shelf, 00:21:32.360 --> 00:21:35.120 which demos the angle of repose by tipping 00:21:35.160 --> 00:21:38.600 to allow the first of two boot pendulums to swing. 00:21:38.640 --> 00:21:41.040 For now, that's all they've got. 00:21:43.320 --> 00:21:44.640 I think that's fine. 00:21:44.680 --> 00:21:48.000 Damien, who's rapidly gaining a reputation as the sensible one, 00:21:48.040 --> 00:21:50.000 is starting at the start. 00:21:50.040 --> 00:21:53.040 Normally, that increases and decreases the speed, 00:21:53.080 --> 00:21:55.600 but we just want it like full beans or nothing. 00:21:55.640 --> 00:21:57.760 So Adam's just completely soldered over all of this, 00:21:57.800 --> 00:21:59.720 and, like, I'm sure it'll be fine. 00:21:59.760 --> 00:22:02.920 After yesterday's wager... I will make tea, OK, 00:22:02.960 --> 00:22:05.680 if yours works first time and ours doesn't. 00:22:05.720 --> 00:22:08.840 ..there's one job the Fieldhouse Brothers won't need to worry about. 00:22:08.880 --> 00:22:10.960 BELL RINGS Alasdair! 00:22:11.000 --> 00:22:14.320 Is someone calling my name? Teas, please! Hot chocolate, please! 00:22:14.360 --> 00:22:16.760 Yeah, three hot chocolates. Coming right up. 00:22:16.800 --> 00:22:19.600 Let's go and deliver some hot chocolate. 00:22:19.640 --> 00:22:22.680 Look on the positive side, Ali - if the engineering doesn't work out, 00:22:22.720 --> 00:22:25.040 you'll be a shoe in for a job in a cafe. 00:22:25.080 --> 00:22:26.400 Blue team! 00:22:26.440 --> 00:22:29.080 Need to smile more, though. 00:22:29.120 --> 00:22:31.600 Whilst Ali has been on catering duties, 00:22:31.640 --> 00:22:34.760 Paul and Owen are experimenting with the pendulum system 00:22:34.800 --> 00:22:37.600 that will trigger their sliding picture frame. 00:22:37.640 --> 00:22:41.560 Results are...suboptimal. 00:22:41.600 --> 00:22:44.160 That should be lower, that. It's even worse, that's worse. 00:22:44.200 --> 00:22:48.280 But then again, they've not had the benefit of a Zach masterclass. 00:22:48.320 --> 00:22:51.440 Is it pendulums or penduli? What do you like? 00:22:51.480 --> 00:22:54.360 Penduli. I like penduli as well. Sounds posher. 00:22:54.400 --> 00:22:57.160 Pull it up to your nose and see what happens when you release it. 00:22:57.200 --> 00:22:59.200 I know what you're going to demonstrate, 00:22:59.240 --> 00:23:01.720 cos I've had this done to me before. 00:23:01.760 --> 00:23:04.080 Don't worry, it won't hit you in the face... Yes. 00:23:04.120 --> 00:23:06.960 It's got to fight gravity, it's got to fight wind resistance. 00:23:07.000 --> 00:23:08.640 All of that is losing energy, 00:23:08.680 --> 00:23:11.080 and thus it will never travel back to the same point. 00:23:11.120 --> 00:23:12.880 Try not to flinch. 00:23:14.840 --> 00:23:16.880 Oh! Yeah. That was close. 00:23:16.920 --> 00:23:19.440 In chain reactions, you can fail very easily 00:23:19.480 --> 00:23:22.840 because you drop it and it doesn't hit its target - 00:23:22.880 --> 00:23:25.760 it'll never reach it again, and you've failed. 00:23:25.800 --> 00:23:27.720 If you want to make it more reliable, 00:23:27.760 --> 00:23:29.880 if you want to make it more interesting, 00:23:29.920 --> 00:23:31.680 give it a little bit of side translation, 00:23:31.720 --> 00:23:34.040 give it a drop from the edge. 00:23:34.080 --> 00:23:37.760 Right, so that's missed but... Almost hit me in the face. 00:23:37.800 --> 00:23:40.880 ..it's going to keep working round. Until finally... 00:23:40.920 --> 00:23:43.160 You don't know when it's going to hit... 00:23:43.200 --> 00:23:47.400 But you do know that as it swings, it will collide. 00:23:47.440 --> 00:23:50.360 It needs more circular motion, doesn't it? Yeah. 00:23:50.400 --> 00:23:53.520 Have Technical Knockout been listening in? 00:23:53.560 --> 00:23:55.280 Go for it. 00:23:55.320 --> 00:23:57.640 That was better. Whoa. We like that. 00:23:58.800 --> 00:24:00.680 Next door, the Fieldhouse Brothers 00:24:00.720 --> 00:24:03.400 are working on the most complex part of their build... 00:24:03.440 --> 00:24:07.080 There we go. ..the ambitious book shelf. 00:24:07.120 --> 00:24:08.760 It's gonna work. 00:24:12.520 --> 00:24:14.320 It's a double domino. 00:24:14.360 --> 00:24:17.680 So, initially, the books all fall down, as you would expect. 00:24:17.720 --> 00:24:22.120 So they then lay down like this, until the last one goes down, 00:24:22.160 --> 00:24:24.200 which sends a wave back the other way, 00:24:24.240 --> 00:24:27.120 which is the final little step of the book dropping down like that. 00:24:30.360 --> 00:24:31.400 Yes! 00:24:31.440 --> 00:24:34.280 Brilliant, but potentially controversial. 00:24:34.320 --> 00:24:37.240 Have we seen the opposition? No. 00:24:37.280 --> 00:24:40.960 Is Hammond a fan of the reclaimed wood? Dunno. 00:24:41.000 --> 00:24:42.640 I am, as it happens. 00:24:42.680 --> 00:24:44.960 Is this an everyday object you're making here? 00:24:45.000 --> 00:24:47.880 Yeah, use it every day. Do you? Find it lying around the house. 00:24:47.920 --> 00:24:49.840 Books need to be stored every single day. 00:24:49.880 --> 00:24:51.280 Would Hammond put it in his house? 00:24:51.320 --> 00:24:53.640 Oh, yeah, it's rustic. He loves this. 00:24:53.680 --> 00:24:56.640 Any object you find lying round the house - but I'll make my own. 00:24:56.680 --> 00:25:00.520 Jealousy is a very unattractive quality, Paul. 00:25:00.560 --> 00:25:02.360 Teams! 00:25:02.400 --> 00:25:04.840 You have two and a half hours left. 00:25:04.880 --> 00:25:08.600 With time ticking, Paul's resorting to desperate measures... 00:25:08.640 --> 00:25:10.280 Oh, this is heartbreaking. 00:25:10.320 --> 00:25:13.040 ..to give Technical Knockout's machine an end. 00:25:13.080 --> 00:25:15.960 Dogs aren't easy to screw, actually, it's quite tricky. 00:25:16.000 --> 00:25:18.960 Well, you don't see that at Crufts. 00:25:19.000 --> 00:25:20.240 To exit the landing, 00:25:20.280 --> 00:25:23.160 the sliding picture frame will trigger a lever system 00:25:23.200 --> 00:25:25.880 to roll a crystal ball - every landing has one - 00:25:25.920 --> 00:25:28.480 along the banister to topple a falling book 00:25:28.520 --> 00:25:31.800 that tips a chair to release a dog on a skateboard. 00:25:31.840 --> 00:25:33.520 Obviously. 00:25:34.840 --> 00:25:36.920 Oh, that was a bit hairy, weren't it? 00:25:36.960 --> 00:25:38.480 It's a bold plan, 00:25:38.520 --> 00:25:43.120 but making the clever elements join together as an actual chain 00:25:43.160 --> 00:25:44.480 could be tough. 00:25:44.520 --> 00:25:46.000 He's actually going on his own now. 00:25:46.040 --> 00:25:47.920 It's good, though, happy with that. 00:25:47.960 --> 00:25:50.280 Next door, progress is smoother. 00:25:50.320 --> 00:25:51.880 Oh, that's slick, isn't it? 00:25:51.920 --> 00:25:54.440 Damien is onto the boot pendulum system. 00:25:54.480 --> 00:25:56.640 So this one would be initially stationary, 00:25:56.680 --> 00:25:58.320 this one will be swinging, 00:25:58.360 --> 00:26:00.360 and over time, that one will slow down, 00:26:00.400 --> 00:26:03.080 and this one will steal all the energy from that one, 00:26:03.120 --> 00:26:05.040 and this will kick into something else here. 00:26:05.080 --> 00:26:07.640 But just as things seem to be going to plan, 00:26:07.680 --> 00:26:11.080 Adam appears to be having another one of his moments. 00:26:11.120 --> 00:26:13.480 Adam, it's not time for playing around. 00:26:13.520 --> 00:26:15.520 I haven't played with Brio for so long! 00:26:15.560 --> 00:26:18.480 I want to make some track that falls into position. 00:26:18.520 --> 00:26:21.240 Ideally, in my head, the ball rolls down, 00:26:21.280 --> 00:26:24.680 and it rolls round the track and it nudges it, 00:26:24.720 --> 00:26:26.560 and then the train will go down. 00:26:26.600 --> 00:26:29.440 Oh, this might be a bit ambitious. Yeah! 00:26:31.080 --> 00:26:32.480 Fieldhouse Brothers. 00:26:32.520 --> 00:26:35.200 Why, Adam, are you playing with the train set? 00:26:35.240 --> 00:26:36.920 We just had a bit of free time. 00:26:36.960 --> 00:26:38.600 Is it the one potential 00:26:38.640 --> 00:26:41.760 for catastrophic failure in the whole machine? 00:26:41.800 --> 00:26:44.000 It's not working at the moment and all afternoon. 00:26:44.040 --> 00:26:46.920 We saw how it played out yesterday, it worked yesterday... 00:26:46.960 --> 00:26:49.440 There is simply a pattern here. 00:26:49.480 --> 00:26:52.680 Yesterday, you insisted on letting loose a bar of soap 00:26:52.720 --> 00:26:55.000 in the hope it would land in a bucket, 00:26:55.040 --> 00:26:57.520 and today you're playing with a collapsed train set. 00:26:57.560 --> 00:27:00.160 Well, good luck, chaps. Thanks! 00:27:00.200 --> 00:27:03.800 Technical Knockout don't have to contend with the Adam factor 00:27:03.840 --> 00:27:05.680 but are facing an uphill struggle 00:27:05.720 --> 00:27:08.320 to connect the disparate parts of their machine. 00:27:08.360 --> 00:27:11.320 And they're facing an old enemy. 00:27:11.360 --> 00:27:16.280 Teams, the great Stephen Hawking said you cannot predict the future. 00:27:16.320 --> 00:27:18.560 But he was wrong - I can. 00:27:18.600 --> 00:27:22.920 I predict I'm going to witness another five minutes of abject panic 00:27:22.960 --> 00:27:24.760 and then we'll see what happens. 00:27:24.800 --> 00:27:26.040 What I'm trying to say is 00:27:26.080 --> 00:27:28.040 you've got five minutes' build time left! 00:27:28.080 --> 00:27:30.160 I'm in panic mode now. Yeah! 00:27:30.200 --> 00:27:32.840 That's where ambition gets you - that's why I've never had any. 00:27:35.160 --> 00:27:38.280 Just rotate this? Yeah, that's what we're scared of, that happening. 00:27:38.320 --> 00:27:40.400 So I did a contingent one from, like, there... 00:27:40.440 --> 00:27:43.160 Robin's just taking ages on one little catch. 00:27:43.200 --> 00:27:44.480 We can't do a full run-through. 00:27:44.520 --> 00:27:46.120 Come forward about two foot. 00:27:50.600 --> 00:27:52.680 Come on, please. 00:27:54.560 --> 00:27:55.920 Oh, go on, car! 00:27:55.960 --> 00:27:57.000 Teams, one minute! 00:27:57.040 --> 00:27:58.680 One last run. OK, down, down. 00:28:04.080 --> 00:28:06.080 It's ten seconds now. 00:28:06.120 --> 00:28:08.200 Ten seconds! Let's go! 00:28:08.240 --> 00:28:10.080 Five seconds left. One more, one more... 00:28:10.120 --> 00:28:12.080 Two, one... 00:28:12.120 --> 00:28:15.120 And that's your build time up, tools down! 00:28:15.160 --> 00:28:17.360 Good. Happy with that. 00:28:18.400 --> 00:28:21.680 First up for their test run are Technical Knockout. 00:28:21.720 --> 00:28:24.880 Will their falling ladder start the pendulum swing 00:28:24.920 --> 00:28:28.160 to raise the cable and allow the picture frame to slide 00:28:28.200 --> 00:28:30.680 and roll the crystal ball with enough force 00:28:30.720 --> 00:28:33.040 to dislodge the book to knock over the chair 00:28:33.080 --> 00:28:36.000 and release the skateboarding dog? 00:28:36.040 --> 00:28:39.720 Team Technical Knockout, are we looking at something now, 00:28:39.760 --> 00:28:42.280 after all that absolute bedlam, that's going to work? 00:28:42.320 --> 00:28:45.200 Yeah, I think our blind panic has produced something 00:28:45.240 --> 00:28:48.320 that I'm more confident to work than the first rig. 00:28:48.360 --> 00:28:50.280 My fingers are definitely crossed. Thank you. 00:28:50.320 --> 00:28:53.360 I'm predicting total chaos. Well, yeah, but will it work? 00:28:53.400 --> 00:28:56.480 I can only hope so. We don't know, you don't know, I don't know! 00:28:56.520 --> 00:28:58.440 I don't think they know. 00:28:58.480 --> 00:29:01.000 In your own time, start your machine, let's see what it can do. 00:29:01.040 --> 00:29:02.920 This'll work. May chaos reign! 00:29:06.680 --> 00:29:09.320 Ball is going. Come on, please. 00:29:09.360 --> 00:29:10.920 Yes! 00:29:10.960 --> 00:29:13.800 Oh-ho! CHEERING 00:29:13.840 --> 00:29:17.920 The build may have gone to the wire, but what a test run. 00:29:17.960 --> 00:29:20.160 The pendulum swing was perfect, 00:29:20.200 --> 00:29:22.280 triggering the sliding picture frame. 00:29:22.320 --> 00:29:24.640 The crystal-ball run was flawless, 00:29:24.680 --> 00:29:26.960 and if there's been a better skateboarding dog, 00:29:27.000 --> 00:29:28.600 I've not seen it. 00:29:29.880 --> 00:29:32.040 Time for the Fieldhouse Brothers. 00:29:32.080 --> 00:29:34.640 They hope the mallet will start the slot car 00:29:34.680 --> 00:29:37.120 to trigger the double dominoes to drop the shelf 00:29:37.160 --> 00:29:40.360 and swing the boot pendulum - sorry, penduli - 00:29:40.400 --> 00:29:44.280 releasing the ball to set off Adam's risky train-track transition. 00:29:45.600 --> 00:29:48.080 Your approach today has been calm. 00:29:48.120 --> 00:29:51.760 You've tested again and again, and sometimes it's gone wrong. 00:29:51.800 --> 00:29:55.440 Yes, I think every single step has gone wrong at some point today. 00:29:55.480 --> 00:29:57.520 Zach? I don't know if it's going to work. 00:29:57.560 --> 00:29:59.440 I hope it works, it might work, who knows? 00:29:59.480 --> 00:30:01.320 Well, there is only one way to find out. 00:30:01.360 --> 00:30:03.840 In your own time, start your machine, let's see what it does. 00:30:03.880 --> 00:30:05.640 Damien, fire it up. 00:30:10.960 --> 00:30:12.240 Single dominoes. 00:30:12.280 --> 00:30:13.400 Double dominoes. 00:30:14.640 --> 00:30:15.960 Single pendulum. 00:30:18.560 --> 00:30:22.120 Suspense, double...suspense, double pendulum. 00:30:22.160 --> 00:30:24.000 Yeah, go on, train, go on, train! 00:30:24.040 --> 00:30:25.880 Yes! Yes! 00:30:25.920 --> 00:30:27.840 First time and every time. 00:30:27.880 --> 00:30:30.680 The slot car release was faultless, 00:30:30.720 --> 00:30:33.720 the double book dominoes spectacular, 00:30:33.760 --> 00:30:36.200 the boot penduli delightfully daft 00:30:36.240 --> 00:30:38.440 and the potentially ruinous train gag 00:30:38.480 --> 00:30:41.600 ran like it was, well, on tracks. 00:30:41.640 --> 00:30:43.400 Brilliant! 00:30:43.440 --> 00:30:46.240 Every day, like, an hour before the deadline, 00:30:46.280 --> 00:30:47.760 like, nothing works. 00:30:47.800 --> 00:30:50.800 It's all come together in the last 30 minutes for two days in a row. 00:30:50.840 --> 00:30:53.000 That's what this show is all about. 00:30:53.040 --> 00:30:54.840 How about that, TKO? Great. 00:30:54.880 --> 00:30:57.640 And you know what? Tomorrow is going to be one of our simpler days. 00:30:57.680 --> 00:31:00.320 Hopefully - less construction, that's the hope, really. 00:31:00.360 --> 00:31:02.520 It's been a dream day for both teams, 00:31:02.560 --> 00:31:05.360 but tomorrow could still be a nightmare. 00:31:08.840 --> 00:31:10.000 Welcome back. 00:31:10.040 --> 00:31:14.480 There is serious engineering afoot because, like many, I've dreamed 00:31:14.520 --> 00:31:19.760 for years of a world where I can make my bed without leaving my bath. 00:31:19.800 --> 00:31:22.760 And by the end of today, we shall know whether either of our two teams 00:31:22.800 --> 00:31:25.400 have turned that dream into reality. 00:31:25.440 --> 00:31:28.960 On day one, both Technical Knockout and their opponents, 00:31:29.000 --> 00:31:30.400 the Fieldhouse Brothers, 00:31:30.440 --> 00:31:33.120 built across the bathroom with varying results. 00:31:33.160 --> 00:31:35.960 Boom! No! Oh! 00:31:36.000 --> 00:31:40.120 Yesterday, both enjoyed perfect runs across the landing and there's 00:31:40.160 --> 00:31:41.800 everything to play for... 00:31:43.360 --> 00:31:45.000 ..on the third and final day. 00:31:45.040 --> 00:31:47.400 Today, you must build across the bedroom 00:31:47.440 --> 00:31:49.600 and figure out how to make the bed. 00:31:49.640 --> 00:31:53.560 It's a tall order and what you don't need is any further complications. 00:31:53.600 --> 00:31:57.000 So, here's a further complication. On your workbench you will find 00:31:57.040 --> 00:32:01.320 a mystery object, which must be incorporated into your build today. 00:32:01.360 --> 00:32:05.080 Use it as you will, but use it you must. 00:32:05.120 --> 00:32:07.440 OK? Go find your mystery object, 00:32:07.480 --> 00:32:08.880 make your plans and build. 00:32:08.920 --> 00:32:12.080 Good luck. Let's go, boys. What is it? What is it? What is it? 00:32:12.120 --> 00:32:14.160 Is it WD-40? Oh, it's a fan. 00:32:14.200 --> 00:32:15.720 Oh, here it is, look. It's got a bow on it. 00:32:15.760 --> 00:32:19.240 Oh, actually, this works. It's quite an exciting one today actually. 00:32:19.280 --> 00:32:21.200 Lots of ways this could be used. 00:32:21.240 --> 00:32:23.760 I'm a fan of that. Oh, yeah, I can see. That's cool. 00:32:23.800 --> 00:32:26.440 Whilst the team gets to grips with their mystery object, 00:32:26.480 --> 00:32:30.520 Shini Somara is exploring the science of the humble fan. 00:32:35.200 --> 00:32:36.640 Whoo! 00:32:36.680 --> 00:32:40.000 Also, impossible to breathe 00:32:40.040 --> 00:32:43.440 standing in front of this industrial wind turbine. 00:32:43.480 --> 00:32:48.800 Inside it, a fan that looks really similar to a household fan, 00:32:48.840 --> 00:32:53.040 and they actually work in the same way to propel air forward, 00:32:53.080 --> 00:32:54.640 otherwise known as thrust. 00:32:54.680 --> 00:32:58.160 The principle is that air is sucked in through the back 00:32:58.200 --> 00:33:00.440 and then accelerated through the front. 00:33:00.480 --> 00:33:05.200 And our teams could use that thrust to maybe move something else, 00:33:05.240 --> 00:33:10.240 but they could also use the oscillating head to maybe give 00:33:10.280 --> 00:33:12.920 something a directional nudge. 00:33:12.960 --> 00:33:17.360 So plenty of choices for our teams, but the Fieldhouse Brothers seem 00:33:17.400 --> 00:33:19.200 to have made up their minds already. 00:33:19.240 --> 00:33:22.520 This needs to push the hairdryer across the table and the hairdryer 00:33:22.560 --> 00:33:25.080 will have a sail on it to protect the ping pong ball. 00:33:25.120 --> 00:33:28.280 You just need a big bit of cardboard on the back of that. 00:33:28.320 --> 00:33:30.200 It's fine. Easy. 00:33:30.240 --> 00:33:33.360 Yeah, and... Yeah. OK. I can, I can do that. Yeah? 00:33:33.400 --> 00:33:35.200 Say it like you mean it, Robin. 00:33:35.240 --> 00:33:37.240 We're definitely going to need that, 00:33:37.280 --> 00:33:39.520 so we're going to trigger it to come down 00:33:39.560 --> 00:33:42.160 and then, this will be inside the duvet cover and it will roll out 00:33:42.200 --> 00:33:44.360 like that, making the bed. 00:33:44.400 --> 00:33:47.680 The Fieldhouse Brothers plan to use the train from the hallway 00:33:47.720 --> 00:33:52.000 to turn on a fan that will blow a sail attached to a rod that pushes 00:33:52.040 --> 00:33:55.560 a hairdryer on wheels to deliver a hovering ping pong ball 00:33:55.600 --> 00:33:59.400 onto a track that will drop it onto a mousetrap that will drop 00:33:59.440 --> 00:34:02.960 a standing drawer that triggers pulleys to not only pull a doll 00:34:03.000 --> 00:34:06.800 to safety, but also collapse a hinged mattress before the 00:34:06.840 --> 00:34:09.880 lilo-filled duvet cover unfurls to make the bed. 00:34:14.080 --> 00:34:18.080 Adam's hard at work on the doll retrieval mechanism. 00:34:18.120 --> 00:34:20.480 It's going to work. If you say so, Adam. 00:34:20.520 --> 00:34:24.640 One thing that's already working is the hinged mattress. 00:34:26.640 --> 00:34:29.800 Good start, Fieldhouse. Nice. 00:34:29.840 --> 00:34:34.640 Next-door, Ali is sticking with his lucky whiteboard from yesterday. 00:34:34.680 --> 00:34:36.560 Erm... Go from the top. Step one. 00:34:36.600 --> 00:34:39.960 We've got dog coming in, so this is going to hit a fan 00:34:40.000 --> 00:34:42.840 and that's going to move the arm across. 00:34:42.880 --> 00:34:45.280 This is going to go round, what, ten times, something like that. 00:34:45.320 --> 00:34:46.920 It's going to pull something across here. 00:34:46.960 --> 00:34:48.480 Technical Knockout want their 00:34:48.520 --> 00:34:50.888 skateboarding dog to hit a trip wire 00:34:50.912 --> 00:34:53.280 to trigger a mouse trap and lever 00:34:53.320 --> 00:34:58.120 that turn on the fan, which blows a sail that starts a record deck 00:34:58.160 --> 00:35:02.320 that reels in a candelabra on a trolley to burn through a string 00:35:02.360 --> 00:35:05.160 that releases a bungee-propelled duvet. 00:35:06.320 --> 00:35:08.400 What do you reckon? Is that unmade? 00:35:08.440 --> 00:35:11.280 Kevin and Ali are making headway with the bungee-powered 00:35:11.320 --> 00:35:12.360 bed making system. 00:35:12.400 --> 00:35:15.600 Question is, does it become made? 00:35:17.520 --> 00:35:19.760 And Kevin clearly has high standards. 00:35:19.800 --> 00:35:22.560 I mean, we're definitely being judged on the way this bed 00:35:22.600 --> 00:35:23.760 looks like at the end. 00:35:23.800 --> 00:35:25.720 Ali clearly hasn't. 00:35:25.760 --> 00:35:27.480 That looks pretty made to me. Erm... 00:35:27.520 --> 00:35:29.240 Cos that side I'm really happy with. 00:35:29.280 --> 00:35:31.200 Typical student. 00:35:31.240 --> 00:35:34.360 Both teams seemed unfazed by the introduction of the mystery object. 00:35:34.400 --> 00:35:35.720 How are they get on with them? 00:35:35.760 --> 00:35:39.000 Both teams really looked at it, came up with a plan quite quickly. 00:35:39.040 --> 00:35:42.960 TKO, they decided that they wanted to have the fan blow a dust pan 00:35:43.000 --> 00:35:46.320 and then, that's going to knock a record needle onto a record. 00:35:46.360 --> 00:35:48.400 What, the needle onto the...? 00:35:48.440 --> 00:35:51.640 Yeah. For Fieldhouse brothers, they wanted to do 00:35:51.680 --> 00:35:55.120 the fan hits a sail and that's going to start a ping pong ball 00:35:55.160 --> 00:35:57.000 from the hairdryer. If you think about it, 00:35:57.040 --> 00:35:58.600 that's two different air streams. 00:35:58.640 --> 00:36:01.240 You have the fan and the hairdryer blowing up. 00:36:01.280 --> 00:36:03.800 But if you introduce wind across it... Right. 00:36:03.840 --> 00:36:05.800 With just three hours left, 00:36:05.840 --> 00:36:09.760 the complexity of their grand fan plan is beginning to dawn 00:36:09.800 --> 00:36:11.920 on the Brothers Fieldhouse. 00:36:11.960 --> 00:36:14.560 Right, I'm giving up with the hairdryer. OK, fine. 00:36:14.600 --> 00:36:16.400 Scrap it completely. 00:36:16.440 --> 00:36:19.240 You're just going to knock the ball with the lance or something? 00:36:19.280 --> 00:36:20.920 Yeah. Lance. Got my lance. 00:36:20.960 --> 00:36:23.080 And that's not the only change of plan. 00:36:23.120 --> 00:36:27.040 There have been complaints from Doll Lovers UK. 00:36:27.080 --> 00:36:31.440 So we used to have it on a chain, being saved from underneath the bed, 00:36:31.480 --> 00:36:36.240 but we've replaced it with a little marmot slash beaver thing. 00:36:36.280 --> 00:36:38.800 If you are a stuffed marmot lover, please, 00:36:38.840 --> 00:36:41.040 keep your opinions to yourself. 00:36:41.080 --> 00:36:44.480 But doll or no doll, it's not working. 00:36:44.520 --> 00:36:46.160 Not enough force. No way. 00:36:47.400 --> 00:36:52.040 Progress is smoother for Technical Knockout. Owen is repurposing 00:36:52.080 --> 00:36:56.200 a basketball backboard to create their candelabra trolley. 00:36:56.240 --> 00:36:58.360 With the last major component complete, 00:36:58.400 --> 00:37:03.280 it's now a case of fitting the switch mechanism to the fan... 00:37:03.320 --> 00:37:06.440 and rigging the quick-release burning string. 00:37:06.480 --> 00:37:08.320 No, look. 00:37:08.360 --> 00:37:11.200 Ready? Leave it, leave it. Ohhh. 00:37:12.360 --> 00:37:13.400 I like it. 00:37:13.440 --> 00:37:15.640 I wonder how they're getting on next-door? 00:37:15.680 --> 00:37:17.960 Don't have time to worry about this any more. No, we don't. 00:37:18.000 --> 00:37:20.160 We've got to be, we've got to be... This has got to work. 00:37:20.200 --> 00:37:22.120 It's all about making, just making the bed. 00:37:22.160 --> 00:37:23.600 Pull that pin out with the draw. 00:37:23.640 --> 00:37:26.040 Surely you just get this bit really tense? 00:37:26.080 --> 00:37:27.520 No, we literally don't have time. 00:37:27.560 --> 00:37:31.040 Yeah, pressure not helping relationships there. 00:37:31.080 --> 00:37:33.400 If we just keep trying the same thing again, it's not going to work. 00:37:33.440 --> 00:37:35.640 We need to do something slightly different. We've got less 00:37:35.680 --> 00:37:38.720 than an hour, we've got 55 minutes. We should be testing it now. 00:37:38.760 --> 00:37:41.440 Which is what's happening next-door. 00:37:54.080 --> 00:37:57.560 Hey! Chaps, well done. That was a good run. Whoo! 00:37:57.600 --> 00:37:59.440 Right. Checklist. Right. 00:37:59.480 --> 00:38:02.000 Duck. String not tied. Yeah. 00:38:02.040 --> 00:38:03.160 This is on kilter? 00:38:03.200 --> 00:38:05.028 Yes, it is. Soap not. 00:38:05.052 --> 00:38:06.880 Phew! Are we all done? 00:38:06.920 --> 00:38:08.880 The bed's not going to go down, but, yeah. 00:38:08.920 --> 00:38:11.160 Carry on. Don't let me interrupt. 00:38:11.200 --> 00:38:14.040 OK. We'll take last... Two, two seconds. 00:38:14.080 --> 00:38:17.680 I'm just... The marmot should be dragged off the bed. 00:38:19.240 --> 00:38:20.280 And it doesn't work. 00:38:20.320 --> 00:38:22.720 It's quite intense in the bedroom here. 00:38:22.760 --> 00:38:24.640 Yeah, we've got a lot to do. 00:38:24.680 --> 00:38:26.400 Your usual technique of build it 00:38:26.440 --> 00:38:28.720 and then test it, test it, test it, test it. 00:38:28.760 --> 00:38:32.240 You haven't built it yet. No. Bad time. 00:38:32.280 --> 00:38:36.200 Uh-oh. Uh-eh. Are we ready? 00:38:38.600 --> 00:38:40.920 Latch didn't work. 00:38:40.960 --> 00:38:43.760 Teams. Teams. 00:38:43.800 --> 00:38:49.200 I'm trying to find a gentle, calming way of telling you 00:38:49.240 --> 00:38:52.880 you've only got three minutes left, but I can't. 00:38:52.920 --> 00:38:54.920 YOU'VE ONLY GOT THREE MINUTES LEFT! 00:38:54.960 --> 00:38:56.600 Let's go, let's go. Let's go, let's go. 00:38:56.640 --> 00:38:58.840 See? It's impossible. I can't do it. 00:38:58.880 --> 00:39:01.560 Oh, my God. This it not where we want to be right now. 00:39:01.600 --> 00:39:04.080 First D-ring in position. Nut. Check. 00:39:06.480 --> 00:39:09.360 30 seconds, team. 30 seconds. 00:39:10.560 --> 00:39:13.640 This is down to the wire, lots of wires. 00:39:13.680 --> 00:39:16.960 Ten seconds until build time is over. 00:39:17.000 --> 00:39:21.480 Five, four, three... Can't do anything now, sorry. ..two, one. 00:39:21.520 --> 00:39:24.080 Teams, tools down. No more building. 00:39:24.120 --> 00:39:26.800 Time to get set for the full run. 00:39:26.840 --> 00:39:29.200 It's never worked. It's not actually worked yet, has it? 00:39:33.560 --> 00:39:35.520 After three intense days, 00:39:35.560 --> 00:39:37.400 and the Fieldhouse Brothers' mad dash 00:39:37.440 --> 00:39:39.280 to complete yesterday's build, 00:39:39.320 --> 00:39:42.840 both teams are waiting to see if their chain-reaction machines 00:39:42.880 --> 00:39:46.760 will allow bath lovers to make the bed without leaving the tub. 00:39:46.800 --> 00:39:49.720 At stake - a place in the semifinal. 00:39:49.760 --> 00:39:54.240 The final decision on who makes it through will fall to judge Zach. 00:39:54.280 --> 00:39:57.720 Once started, the team's machines will, ideally, complete their task 00:39:57.760 --> 00:39:59.320 without ever being touched again. 00:39:59.360 --> 00:40:01.480 Of course, that doesn't always happen. 00:40:01.520 --> 00:40:05.520 So if a machine stops mid-run, one of the team members can step in 00:40:05.560 --> 00:40:07.680 and move it to the next transition. 00:40:07.720 --> 00:40:10.000 That's known as an intervention. 00:40:10.040 --> 00:40:14.120 I'll be judging on their creativity, ingenuity, number of transitions, 00:40:14.160 --> 00:40:16.200 number of interventions and the incorporation 00:40:16.240 --> 00:40:19.280 of the scientific principle and the mystery object. 00:40:19.320 --> 00:40:21.480 First, it's Technical Knockout. 00:40:23.080 --> 00:40:26.720 In the bedroom, they'll be hoping that the skateboarding dog triggers 00:40:26.760 --> 00:40:31.000 the mouse trap to turn on the fan to blow the needle onto the record, 00:40:31.040 --> 00:40:34.520 winding in the candle to burn through the string to release 00:40:34.560 --> 00:40:36.120 the duvet catapult. 00:40:36.160 --> 00:40:39.560 But that will all be irrelevant if the bathroom and landing stage 00:40:39.600 --> 00:40:42.080 with the unreliable pendulum fail. 00:40:42.120 --> 00:40:46.160 TKO, three days of thinking, planning and working, 00:40:46.200 --> 00:40:48.560 and there it is before us now. She's beautiful, isn't she? 00:40:48.600 --> 00:40:52.280 It's a beautiful thing, if it works. Is it going to? 00:40:52.320 --> 00:40:53.600 Yes. Of course it will. 00:40:53.640 --> 00:40:56.400 Right. Zach. 00:40:56.440 --> 00:40:57.800 Is it going to work? 00:40:57.840 --> 00:41:01.240 I've seen them do a checklist today, so who knows? 00:41:01.280 --> 00:41:02.360 Yeah. Right. 00:41:02.400 --> 00:41:06.040 If you are ready, TKO, this is your moment to shine. 00:41:06.080 --> 00:41:09.360 All right, Paul. On three, two, one. 00:41:09.400 --> 00:41:11.440 Go, go, go! 00:41:14.600 --> 00:41:17.160 Ooh! Yes, OK. 00:41:17.200 --> 00:41:19.600 Go on. We want to see that foam. We want to see that foam. 00:41:21.200 --> 00:41:23.200 Oh, my goodness me! Oh, there it is, look at that. 00:41:23.240 --> 00:41:27.080 That's... Oh! You're out of that room! 00:41:27.120 --> 00:41:30.440 Oh, no. Oh, no. Oh, come on! 00:41:30.480 --> 00:41:34.120 Keep going, keep going. Oh! It's not triggered the pin. 00:41:34.160 --> 00:41:38.440 Under the rules, you are allowed interventions. 00:41:43.800 --> 00:41:46.320 Just... You can intervene. 00:41:46.360 --> 00:41:48.840 Try not to get killed in there. It's possible. 00:41:58.280 --> 00:41:59.640 Oh, for... You're joking me. 00:41:59.680 --> 00:42:02.560 I literally don't understand. It's just gone, like, ten times in a row. 00:42:02.600 --> 00:42:04.960 That's the nature of these machines. 00:42:10.920 --> 00:42:14.320 Oh! It's going to go! Oh, something's gone wrong 00:42:14.360 --> 00:42:16.760 with the bed mechanism at the end! 00:42:16.800 --> 00:42:20.520 Yeah... There! CHEERING AND APPLAUSE 00:42:20.560 --> 00:42:22.440 And there it is. 00:42:22.480 --> 00:42:24.480 It is a hard, cruel world. 00:42:24.520 --> 00:42:26.880 One made bed. 00:42:26.920 --> 00:42:28.960 Gutting for Technical Knockout. 00:42:29.000 --> 00:42:31.280 The previously troublesome wash bag 00:42:31.320 --> 00:42:33.720 fell and released the shower curtain, 00:42:33.760 --> 00:42:36.520 but the redesigned pendulum trigger failed. 00:42:36.560 --> 00:42:41.000 And from then on, disappointment followed disappointment. 00:42:41.040 --> 00:42:44.880 Guys, it is cruel. What can I offer, other than that? 00:42:44.920 --> 00:42:46.600 It was an amazing machine. 00:42:46.640 --> 00:42:47.960 So, well done. 00:42:48.000 --> 00:42:50.360 Next up, it's the Fieldhouse Brothers. 00:42:50.400 --> 00:42:54.720 After flawless runs in the first two rooms, they descended into panic, 00:42:54.760 --> 00:42:58.200 and with no testing in the bedroom, will be hoping the fan blows 00:42:58.240 --> 00:43:02.480 the sail and moves the rod to start the ball run, triggering the falling 00:43:02.520 --> 00:43:05.920 drawer to release the hinged mattress and lilo-filled duvet. 00:43:05.960 --> 00:43:07.600 Fieldhouse Brothers. 00:43:07.640 --> 00:43:09.240 How are you feeling? 00:43:09.280 --> 00:43:12.200 Very stressed. Yeah. But not had a successful run yet, so... 00:43:12.240 --> 00:43:13.600 Right. 00:43:13.640 --> 00:43:15.400 Well, there's a first time. 00:43:15.440 --> 00:43:17.520 It was nice of you to at least have the decency to dress 00:43:17.560 --> 00:43:20.640 for the occasion and turn up. Your brother is... What's going on? 00:43:20.680 --> 00:43:22.160 Yeah. Any opportunity. 00:43:22.200 --> 00:43:25.440 OK, enough said. We'll leave that there. Zach. 00:43:25.480 --> 00:43:27.448 I've seen it work two days in a row 00:43:27.472 --> 00:43:29.440 now, but I also only saw them 00:43:29.480 --> 00:43:32.400 in the bedroom today and not leave a lot of room for testing. Right. 00:43:32.440 --> 00:43:36.840 Well, this is your first and only opportunity to run the whole machine 00:43:36.880 --> 00:43:39.480 to see if you can make my bed from my bath. 00:43:39.520 --> 00:43:41.880 And good luck. All right, Robin. 00:43:41.920 --> 00:43:44.400 Oh, Robin dropped it. Oh, no, he's spilled the wine. 00:43:44.440 --> 00:43:46.800 What a shame. That's a bit annoying. 00:43:51.640 --> 00:43:54.840 Yes! Come on! Come on, soap. Ooh! 00:43:57.280 --> 00:43:59.560 Come on, come on. Sunshine. 00:43:59.600 --> 00:44:02.920 Double domino. Double domino. Dominoes. So tense. 00:44:02.960 --> 00:44:05.760 What is going on? You do have to appreciate dominoes 00:44:05.800 --> 00:44:06.880 that are like that. 00:44:06.920 --> 00:44:09.240 Come on. Come on. 00:44:09.280 --> 00:44:12.200 Yes, yes. Yes. Yes. 00:44:13.200 --> 00:44:15.400 Oh, you're in the final room. 00:44:22.440 --> 00:44:24.440 Oh, what happened? No! 00:44:24.480 --> 00:44:27.240 It's the last one! On the last transition, 00:44:27.280 --> 00:44:30.440 it's stuck. Well, you are allowed one intervention. 00:44:30.480 --> 00:44:31.880 Just go and trigger it. 00:44:31.920 --> 00:44:35.240 Go on, Robin. Looking * as ever. Go on. 00:44:35.280 --> 00:44:38.520 And we made the bed! And the bed is made. There it is. 00:44:38.560 --> 00:44:41.160 Well done. One intervention. 00:44:41.200 --> 00:44:43.280 So close to perfection. 00:44:43.320 --> 00:44:47.280 Both the bathroom and landing sections of the Fieldhouse machine 00:44:47.320 --> 00:44:51.480 were as reliable as ever, and even the reworked fan stage released 00:44:51.520 --> 00:44:55.760 the ball as planned, triggering the falling drawer, 00:44:55.800 --> 00:44:58.640 only for the final release to fail. 00:44:58.680 --> 00:45:03.680 So, plenty for both teams to ponder as they await Zach's judgment. 00:45:03.720 --> 00:45:08.280 Surely, as judge, this one is easy to call, because the Fieldhouse 00:45:08.320 --> 00:45:11.400 brothers did it with one intervention, TKO had four. 00:45:11.440 --> 00:45:15.120 But I do think Technical Knockout took more risks than Fieldhouse. 00:45:15.160 --> 00:45:18.720 The angle of repose, I think Technical Knockout did it better. 00:45:18.760 --> 00:45:21.720 I also think they used their fan better as well. 00:45:21.760 --> 00:45:24.040 What about the number of transitions? 00:45:24.080 --> 00:45:25.880 Each team did 40 transitions. 00:45:25.920 --> 00:45:27.800 Same number of stages in both machines. 00:45:27.840 --> 00:45:30.480 It's a lot closer cut than it first appears. 00:45:30.520 --> 00:45:33.240 You do your judging, I'll assemble the troops and deliver your verdict. 00:45:33.280 --> 00:45:35.400 Sounds good. It's all official. 00:45:38.760 --> 00:45:41.360 Teams, what a competition. Fieldhouse Brothers, 00:45:41.400 --> 00:45:42.960 your build was neat, 00:45:43.000 --> 00:45:47.040 contained great storytelling. Technical Knockout, your build 00:45:47.080 --> 00:45:50.360 was big, bold, dramatic and exciting. 00:45:50.400 --> 00:45:54.040 Ultimately, though, this week's winners have to be... 00:45:57.280 --> 00:46:00.280 ..Fieldhouse Brothers. Well done, boys. And well done, both teams. 00:46:00.320 --> 00:46:04.000 Well done, both teams. Really. Well done. 00:46:04.040 --> 00:46:05.880 I'm really proud of the machine. 00:46:05.920 --> 00:46:08.600 I'm proud of what we've made and I'm proud of us as a team, 00:46:08.640 --> 00:46:09.920 how we've made it. 00:46:09.960 --> 00:46:12.520 It's a shame it didn't work all the way, because we did have it 00:46:12.560 --> 00:46:14.160 running at points where it did. 00:46:14.200 --> 00:46:15.920 Relieved, very relieved. 00:46:15.960 --> 00:46:18.480 Very relieved and, yeah, I feel like it was so close. 00:46:18.520 --> 00:46:20.880 It was so close. Anything could have happened. 00:46:20.920 --> 00:46:23.559 Next time - engineering students... 00:46:23.583 --> 00:46:25.560 I forgot to hold it. 00:46:25.600 --> 00:46:28.400 ..and social media stars... Soap on a rope! ..are neck-and-neck 00:46:28.440 --> 00:46:31.080 as they tried to boil my kettle.