1 00:00:00,520 --> 00:00:03,600 Speaker 1: Welcome to brain Stop from house stop works dot com 2 00:00:03,600 --> 00:00:14,680 Speaker 1: where smart happens. Hi. I'm Marshall Brain with today's question, 3 00:00:14,920 --> 00:00:18,239 Speaker 1: how many people does it take to perform a Formula 4 00:00:18,280 --> 00:00:22,160 Speaker 1: one pit stop in just seven or so seconds? If 5 00:00:22,200 --> 00:00:25,120 Speaker 1: you've ever watched a Formula one race, or a NASCAR 6 00:00:25,239 --> 00:00:27,800 Speaker 1: race for that matter, you know that the pit stop 7 00:00:27,920 --> 00:00:31,040 Speaker 1: is an important part of winning in Formula one. A 8 00:00:31,160 --> 00:00:35,400 Speaker 1: well executed pit stop can replace all four tires, refuel 9 00:00:35,479 --> 00:00:37,839 Speaker 1: the car with many gallons of gas, and do it 10 00:00:37,880 --> 00:00:41,720 Speaker 1: all in roughly seven seconds. So how do they do it? 11 00:00:42,080 --> 00:00:46,279 Speaker 1: They use a lot of well coordinated manpower. Most of 12 00:00:46,280 --> 00:00:50,160 Speaker 1: that manpower is focused on the tires. It takes fifteen 13 00:00:50,280 --> 00:00:54,720 Speaker 1: people to replace them. Three people handle each tire, One 14 00:00:54,760 --> 00:00:57,960 Speaker 1: person takes the old tire off, one person puts the 15 00:00:57,960 --> 00:01:01,720 Speaker 1: new tire on, and one person handles the pneumatic wrench. 16 00:01:02,440 --> 00:01:05,400 Speaker 1: Then two or three more people jack the car up 17 00:01:05,480 --> 00:01:08,480 Speaker 1: and down for the couple of seconds necessary to slide 18 00:01:08,520 --> 00:01:12,280 Speaker 1: the tires on and off. Two other people handle fuelling. 19 00:01:12,680 --> 00:01:15,600 Speaker 1: The reason it takes two people is because the fuelling 20 00:01:15,680 --> 00:01:19,600 Speaker 1: hose is massive. It has to be, since nine leaders 21 00:01:19,600 --> 00:01:22,440 Speaker 1: are more than two gallons of fuel are flowing per 22 00:01:22,600 --> 00:01:25,839 Speaker 1: second through that hose. Then there are two more people 23 00:01:25,920 --> 00:01:29,639 Speaker 1: on a backup refueling rig. Now we're up to nineteen people. 24 00:01:30,240 --> 00:01:33,959 Speaker 1: The fireman is standing by with a fire extinguisher in 25 00:01:34,000 --> 00:01:37,200 Speaker 1: his hand in case something goes wrong in that fueling 26 00:01:37,240 --> 00:01:40,440 Speaker 1: process and a fire breaks out. Then there's a person 27 00:01:40,520 --> 00:01:44,280 Speaker 1: there with the engine starter. There's no built in starter 28 00:01:44,400 --> 00:01:46,640 Speaker 1: motor on a Formula one car. It's done with a 29 00:01:46,720 --> 00:01:50,279 Speaker 1: separate tool, and he's there in case the engine cuts 30 00:01:50,320 --> 00:01:53,760 Speaker 1: off while it's in the pit. The pneumatic man deals 31 00:01:53,800 --> 00:01:57,320 Speaker 1: with the pressurized pneumatic system used in place of valve 32 00:01:57,400 --> 00:02:01,720 Speaker 1: springs on F one cars. Heat checks and repressurizes the 33 00:02:01,760 --> 00:02:06,280 Speaker 1: system when necessary. Then there's also an extra person to 34 00:02:06,440 --> 00:02:10,080 Speaker 1: wipe off the driver's visor and supply water. He doesn't 35 00:02:10,080 --> 00:02:12,920 Speaker 1: come out on every pit stop, but he can be out, 36 00:02:13,560 --> 00:02:16,480 Speaker 1: and in some cases there are two people to provide 37 00:02:16,480 --> 00:02:19,560 Speaker 1: adjustments to the front and rear wings. They also don't 38 00:02:19,560 --> 00:02:23,720 Speaker 1: come out every time, but if adjustments are needed, there there. Finally, 39 00:02:23,880 --> 00:02:27,480 Speaker 1: the last person is called the lollipop Man. He handles 40 00:02:27,480 --> 00:02:30,720 Speaker 1: a big round sign that resembles a lollipop and it 41 00:02:30,840 --> 00:02:33,400 Speaker 1: tells the driver what to do at the end. Of 42 00:02:33,400 --> 00:02:36,359 Speaker 1: the pit stop. It's this guy's job to get the 43 00:02:36,440 --> 00:02:39,520 Speaker 1: driver out of the pits and as little time as possible. 44 00:02:40,120 --> 00:02:43,440 Speaker 1: That's a total of twenty six people. They're not all 45 00:02:43,600 --> 00:02:46,239 Speaker 1: used on every pit stop, but you will always see 46 00:02:46,280 --> 00:02:50,680 Speaker 1: at least twenty people making the seven second pit stop possible. 47 00:02:52,960 --> 00:02:55,320 Speaker 1: For more on this and thousands of other topics, does 48 00:02:55,320 --> 00:02:57,519 Speaker 1: that house stop works dot com And don't forget to 49 00:02:57,600 --> 00:02:59,440 Speaker 1: check out the brain stop blog on the house Stop 50 00:02:59,440 --> 00:03:02,359 Speaker 1: works dot com homepage. You can also follow brain stuff 51 00:03:02,360 --> 00:03:05,400 Speaker 1: on Facebook or Twitter at brain Stuff h s W. 52 00:03:07,360 --> 00:03:10,120 Speaker 1: The house Stuff Works iPhone app has arrived. Download it 53 00:03:10,160 --> 00:03:11,440 Speaker 1: today on iTunes.