This is an excuse to show you a really good tunnel

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The Catesby Tunnel, in the UK, is an old Victorian railway tunnel that has a new use: a secretive car testing facility, like a wind tunnel but in reverse. So rather than just show it to the world, I thought I'd answer a question: if you stick a camera on the outside of your car, how much does the drag cost you? ■ The tunnel: catesbytunnel.com/
Camera: Jamie MacLeod www.jamiemacleod.co.uk/
Editor: Michelle Martin / mrsmmartin
This is not an advert, Catesby Projects and the tunnel team had no editorial control and I wasn't paid. (In fact, I paid quite a bit for the fire safety team!)
Thank you to the many people who suggested this over the years, but in particular to David who was able to put me in touch with them directly!
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Опубликовано:

28 май 2023

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Комментарии : 2 тыс.

@TomScottGo Год назад

There were so many possible titles and thumbnails for this video. "Does attaching a camera to your car cost money?" "It's a reverse wind tunnel." "Testing like this used to be impossible." In the end, I just decided I wanted to show you a good tunnel.

@tau9956 Год назад

Thx I guess

@claytations Год назад

Thanks for staying honest. 😊

@Spiretail Год назад

A good tunnel it was.

@Aieieo Год назад

It is a nice tunnel.

@Acre00 Год назад

I am so happy you went with the thumbnail you did. The others feel really clickbait-y

@bonelesswatermelon420 Год назад

Tom somehow manages to continue his trend of train videos despite not having a single train in sight

@NeonCoding Год назад

"The accidental train special" would be much worse in this case

@ethanhoward389 Год назад

Train adjacent

@SylviaRustyFae Год назад

And this is totes a trains vid, bcuz my train lovin arse even got to have a moment of glee when they used the turn table xD I dont think a single trainspotter wudnt be absolutely giddy to be able to ride on a turn table in a disused train tunnel, even if just to flip a u turn xD

@traviscesarone4786 Год назад

Ghost train.

@DiegoGarcia-yl3im Год назад

@@ethanhoward389 liked this reference😅

@ryanpenrod1859 Год назад

3mm in 2.7 km? That's an absurd level of precision even for today, much less Victorian England. What the hell?

@TheHobohobbit Год назад

The victorians were the best engineers in the world. much of their stuff is still in use today

@General12th Год назад

@@TheHobohobbit That's a description, not an explanation. You might as well just say "dwarves did it".

@pachychon Год назад

The techniques and skills have been lost to time and lowering of quality of material and workers. Money would be a big factor too, with governments using the cheapest options possible. There was also the factor of there being a high demand built around a whole industry for the country at large.

@modprog Год назад

@@partraiserhc9351 I understood it to mean that it is a straight line within 3 mm, but that straight line isn't actually tangential to earth at the tunnel center.

@ildarion3367 Год назад

@@partraiserhc9351 It's impossible to have a straight line running parallel to the earth's geoid so I don't know what you're smoking.

@avirubinoff7494 Год назад

I really like that the solution to the problem of "there are bats in the tunnel" was "build a bat hotel".

@654jimbob654 Год назад

Bats are a protected species in the UK. As they often make homes in abandoned buildings or other structures, it's common to see issues arising where renovations or demolitions are delayed because it's against the law to disturb/kill bats, damage their resting places or obstruct access to their shelters. Relocating them to a hotel is a great way of giving them a suitable replacement home!

@aim-to-misbehave5674 Год назад

And a reminder to people not in the UK that bats are rabies-free here! So while you don't have to worry about deadly diseases if you upset bats, you _do_ have to worry about the fine of up to £5k per bat for disturbing them

@kenmcfa Год назад

When life gives you bats...

@Sophiebryson510 Год назад

@@kenmcfa make battade…?

@snepNL Год назад

@@Sophiebryson510 make a bat hotel

@n1ppe Год назад

You don't need an excuse to show us really good tunnels

@radekt.7843 Год назад

His last excuse to show us really good tunnel was maglev train

@the21andonly Год назад

especially since he's right. This is definitely one of the best tunnels I've seen

@EvanTownsend Год назад

@Max Thrower that's your girls tunnel

@arandomcommenter412 Год назад

Is this intended to sound sexual or is that just a byproduct

@NEPAAlchey Год назад

Cool to see a professional in the automotive industry refer to it as an "Austin Powers turn".

@the_original_Bilb_Ono Год назад

I liked that

@Stexen Год назад

Hilarious reference. Always makes me laugh

@MonkeyJedi99 Год назад

The one time I got to drive a steam roller (just pulling into a repair bay) I shouted to the other employee, "Get out of the way!" and he just screamed in mock terror while 'stuck in place'. We laughed.

@narnigrin Год назад

That little reference made me unreasonably happy

@BaldMancTwat Год назад

Everyone I know refers to anything more than a 5-point-turn as an "Austin Powers". We even use it as a verb, e.g. "I Austin Powered my way out of there." or "I might have to Austin Powers it to get out of this one."

@MoehClon Год назад

I love that last sentence "this is the closest I´ve gotten to science in a long time". I´m especially remembering the "toaster numbers don´t mean minutes" and the "I want to destroy my fingerprints with pineapple-based torture" videos as examples of Tom Scott ´doing science´.

@mistermist634 Год назад

Don't forget "throwing drums and a cymbal off a cliff"!

@lucarr1041 Год назад

meanwhile, the recommended video at the end is literally Tom standing on a science instrument. Different kind of "close", but good enough for me

@vigilantcosmicpenguin8721 Год назад

I think Tom's greatest scientific work is his audience surveying. He determined important results like the best thing, how weird his audience is, and the variations of "Jingle Bells, Batman Smells".

@MoehClon Год назад

@@vigilantcosmicpenguin8721 and how to call that owl! UN-General secretary Ban Ki-Moon

@Shaun.Stephens Год назад

He didn't say "gotten", he said "got". Tom speaks English.

@Zebra_M Год назад

Loved the editing on that cut from "we don't want to see the cameraman in the back - because he isn't there." Like a magic trick but not exactly secret as to how it works haha

@shinyagumon7015 Год назад

I liked that Tom used the fact that he uses different cameras as a way to thrown some science into the video.

@volodyadykun6490 Год назад

And some meta storytelling

@vigilantcosmicpenguin8721 Год назад

It almost feels like he's breaking the fourth wall.

@normang3668 Год назад

I love how the multi-point turn has become universally recognized as the 'Austin Powers' turn.

@markfryer9880 Год назад

It's a great universal, non offensive, easily communicated concept. Most Western people have by now seen the film or at least the short of the multi point U turn, so it now works as a shorthand description.

@leopold7562 Год назад

Me too. I used to think it was just me and my mates who used that, but it seems everyone uses it

@RCAvhstape 11 месяцев назад

Not to be confused with the old "Rockford Files" flying J turn.

@supremebuffalo6322 7 месяцев назад

I also like to use Austin Powers as a verb for getting a car stuck. "I've Austin Powers'd the car while trying to turn in the alley"

@microwave221 Год назад

As someone who used to work in notoriously more active tunnels, l can say that the procedure for turning around the wrecker/fire trucks was full lock turn until you hit the wall, full lock the other way until you hit the other, then full lock again into the wall once more if you set yourself up well and twice more if you didn't. The trucks were build with this procedure in mind, the difference those last few inches made was astounding

@JackieBright Год назад

So a well engineered Austin Powers turn

@charleslambert3368 Год назад

Reminds me of the time I had the misfortune to go down a no-through-road in Oxford.

@semurobo 9 месяцев назад

So you actually physically touched the Wall? Or you Just went as close as possible without touching anything?

@microwave221 9 месяцев назад

@@semurobo actually contact it. You didn't hit it at speed, and the trucks had bumpstops or a pushpad so there wouldn't be any damage. There wasn't all that much space on either side when the rig was perpendicular, so every inch mattered

@binbob9 Год назад

I used to work there. Jon is a great guy and a great boss. I’ve got a lot of respect for what he’s achieved and for how he’s running that place.

@bhopcsgo7172 11 месяцев назад

What was your job?

@batterietyp4059 Год назад

3mm deviation off the laser is absolutely crazy to me. How did they do that?

@hongk0ngfu3y Год назад

flat earth

@glenngriffon8032 Год назад

More stringent adherence to set measurements and probably a very accurate plumb line.

@Djorgal Год назад

If you want crazy, look up the Ligo and Virgo experiments. They are like rulers in that they are devices that measure their own length. These tubes are about 4km long, but this length is known to a precision of a tenth of the width of an atom.

@stefanmadzharov9170 Год назад

my guess would be literal thread under tension

@DanielQRT Год назад

especially when considering the fact that over 2.7 km due to the curvature of the earth the tunnel rises 57 cm (22 inches) (making some assumptions)

@g00dbyemisterA Год назад

Gonna be honest Tom, I am mostly upset that this video isnt about the Bat Hotel

@Tsudico Год назад

Hopefully that's the next one. I wonder where the largest bat hotel is on Earth?

@smeeself Год назад

@@Tsudico Transylvania?

@bonecanoe86 Год назад

Someone get the Tim Traveler to go to it!

@frzstat Год назад

@@TsudicoGotham City?

@geoffroi-le-Hook Год назад

Louisville, Kentucky ?

@MikeV8652 Год назад

In case anyone is confused by the tunnel being "flat," yet having a gradient: "Flat" is not the same as "level." A level line is a curved line (constant distance from Earth's center of gravity). This tunnel is instead "flat," meaning straight, not curved. It has gradient, because one end is higher in elevation than the other (probably to facilitate drainage), and the elevation difference between the ends would have to exceed the difference of the middle from level. In the absence of gradient, all water that seeps into a flat tunnel would drain to the middle, because that's the point lowest from level.

@GRosa Год назад

What do you mean by "vertically straightly"?

@MikeV8652 Год назад

@@GRosa That's a slight editing error. I meant "vertically straight," and by that I mean not curved in the vertical axis, as a level line or a line on the surface of the earth is. A straight line is, of course, the shortest distance between two points, or the trajectory of a laser beam.

@leopold7562 Год назад

I'd have said "flat" as in there are no undulations in the surface

@PownyRider Год назад

Depends on where your tunnel start. It could also run out from one end.

@MikeV8652 Год назад

@@PownyRider Only if a flat tunnel has gradient could water run out one end or the other. If both ends of a flat tunnel had the same elevation, water would drain (or marbles would roll) to the middle, because the middle sags relatively lowest from level (deepest within a spherical earth). The effects of gravity are balanced by levelness, not by flatness. Imagine a hypothetical straight (flat) tunnel from London to New York. Both ends would emerge from the earth at an angle, and its middle would be many miles deep into the earth. Clearly, any water or marbles would pool in the middle.

@kice Год назад

Tom's obsession with tunnels or just a big hole underground is comparable to the obsession of Sam from Wendover to airplane/logistics.

@Airbourne92 Год назад

Tom Scott is a hobbit confirmed

@DarkSkay Год назад

It would also have been interesting to see the tunnel as a kind of canal, with vehicles speeding on the water surface instead of asphalt.

@somebystander9465 Год назад

This indeed is a good tunnel

@slink66 Год назад

Abracadabra

@MonkeyJedi99 Год назад

I wonder what happens if you drive a car in the tunnel up to 141.622kph?

@Mumpy Год назад

I love how Jon Paton had to remind us that the surface of the earth is curved, just in case a certain group of people unironically cite the laser light as proof the earth is flat...

@MonkeyJedi99 Год назад

"A... fifteen degree per hour drift..." - "Thanks, Bob!"

@Grim_Beard Год назад

"Interesting."

@Runescaper1357 Год назад

In principle, it's not a dumb argument; there *must* be a distance at which the curvature should be noticeable. How long of a perfectly-level run would one need to observe (or not observe) the phenomenon? I know of the canal and mast test, and that those results can be disregarded due to not factoring in refraction from air and water. I know of a test done on a frozen lake at a distance of roughly 6km that demonstrated no curvature. I recall several other long-distance shots (10+ km) of buildings and landscapes from a camera (Nikon P900 I think?) which purportedly ought not to be possible on a curved earth. What do you think about the idea? What evidence do you know of?

@ashman187 Год назад

2.7 Km is = 8 inches per mile squared, or 52 inches of curve.

@Creaform003 Год назад

@@Runescaper1357 The easiest way to see the curvature with the naked eye, is in our shadow on the moon. There is also a place in Australia you can see it quite nicely. The Nullarbor Plains, I spent a few hours going across it in a train and it messes with your head. You can't see beyond about 10-20km in any direction. It feels like the world hasn't rendered correctly and your view distance is set to medium.

@MrGreatplum Год назад

The Great Central railway main line was built to a phenomenally high standard; it’s no surprise to me that tunnel is so well engineered.

@JoshuaHill182 Год назад

As someone with a degree in physics, this work site really interests me. I love that it was built buy the victorians. Maybe i should send in my CV and see what happens

@ecospider5 Год назад

Excellent reuse of infrastructure. I feel there are a lot of old abandoned things that could be reused. It’s just that the people that could use it don’t know it exists.

@goosenotmaverick1156 Год назад

Agreed! Reuse of infrastructure could save so much in building materials alone, much less once you consider all the environmental costs that would be reduced significantly by not having to build from an empty lot. Not to mention the cool history that can be saved in ways like this!

@DJenerate Год назад

It reminds me of something similar near me in Dudley, there's a former rail tunnel that's not being used by the new tram line, so they've repurposed it into part of a test track for 'Very Light Rail'. I guess using a railway tunnel for something running on rails isn't as interesting, but it's still great to see the infrastructure being used again.

@goosenotmaverick1156 Год назад

@@DJenerate in my opinion, anything like that is interesting, I see any reuse of large scale anything, interesting. I mean, bringing back anything as even the same thing as it was, can be a process. Plus, anything developing in rail transport is also interesting 😎

@garganchua Год назад

reusing train tunnels for cars is such an amazing idea its a shame we dont do it more often. most people who drive cars like to go out of their way just to use the path with tunnels because vroom

@DarkSkay Год назад

Well-built stuff can save so much time, money, resources.

@glenngriffon8032 Год назад

"Austin Powers 37 point turn" had me rolling

@wanderingrandomer Год назад

I love how "doing an Austin Powers" is immediately recognisable as a term. I and a lot of people I know refer to that when botching a 3-point turn

@uumlaut- Год назад

1:07 made me unbelievably happy. I'm glad that they opted to relocate the bats while still getting access to the tunnel

@sarahlouisebutler Год назад

I love that too, but legally they cannot disturb the bats. Bats and their roosts are protected under law in the UK (possibly internationally but I'm not sure).

@uumlaut- Год назад

@@sarahlouisebutler happy non the less. The last thing we need is more meddling with bats, haha

@binbob9 Год назад

I used to work there and it was the biggest hurdle before starting work, more so than any of the engineering bits. Took a looooong time to get sorted.

@izzieb Год назад

I've heard of this tunnel before, it very much seems they were inspired by Chip Ganassis's testing tunnel (the Laurel Hill Tunnel in Pennsylvania) which was used by his various race teams for testing. I believe Chip Ganassi began using it for testing in 2004.

@davidz2690 Год назад

And this one is in Northamptonshire, at the heart of world motorsport

@SmD-ff5xd Год назад

I don't think so. This tunnel is much larger and is available for hire, I believe the only one in the world. used not just for aerodynamics & emissions testing they also have Sunday's where it's available to the public for cycling and the like

@McAdamSandwich Год назад

@@davidz2690 Fairly certain Red Bull's F1 team has/does use it.

@davidz2690 Год назад

@@McAdamSandwich Not surprised - seven F1 teams are based nearby

@gilly_the_fish Год назад

With all the times Tom and crew have mentioned Thunderbirds over the years, I feel like I've watched the whole thing by now.

@vigilantcosmicpenguin8721 Год назад

100% of what I know about Thunderbirds comes from Tom Scott.

@abarratt8869 Год назад

That's a fabulous facility. It strikes me that it's the kind of thing that nobody thought they needed, until someone built it. And then they all realise they need it. And there's not many dead straight, long, spare tunnels around the world... Reminds me of the road testing facility Tom went to in France, with a massively heavy high speed merry-go-round on lorry tyres. Crazy, until you see the results.

@zr4937 Год назад

I live near this facility, and only just now realised what it was for. Growing up in Northampton, saw lots of random places which had abandoned railway tracks from the old railway line that was abandoned in favour of the Northampton-Milton Keynes/London line. We also have a lift tower that, well, was used to test lifts. Now we just abseil down it because we don't need to test lifts here anymore apparently, and at Christmas time we put a tree on top of it. Midlanders are weird.

@abarratt8869 Год назад

@@zr4937 I know the lift tower - driven round it. Listed building now - that's going to cost the owner a lot of money one day. Terry Wogan used to refer to it as the Northampton lighthouse. "Why," he would muse, "are they building a lighthouse in Northampton so far from the sea?".

@rkan2 Год назад

Fittingly after watching Technology Connection's video about the Ioniq 5's brake lights :P

@garfythecat Год назад

I visited both tunnel heads about 20 years ago as I had an interest in the old GCR. A fascinating piece of engineering and it's pleasing to see you don't have to fight through decades of neglect to get to the tunnel now!

@PietroNobili Год назад

This could help answering whether it's more efficient to lower your car windows or use air conditioning, I've always wondered about that

@fireaza Год назад

The Mythbusters did an episode on that.

@TSZatoichi Год назад

Mythbusters already did that, use your AC.

@RJFerret Год назад

Mythbusters tested this via measuring fuel usage over a long time around a racetrack, obviously the exact threshold varies based on vehicle, but essentially AC more efficient at high speeds (highway), open windows at low speeds (city).

@Atlessa Год назад

Mythbusters did that in real world conditions a long time ago. Their method: Have a transparent tank on the outside of the car where they could see how much fuel they used, and drive around the perimeter of a parking lot several times in varying configurations. I believe their result was that the AC was quite a bit more efficient, but keep in mind that was more than 10 years ago so car aerodynamics and AC technology have certainly progressed since.

@benwisey Год назад

Mythbusters tested that.

@invisiblewizard2538 Год назад

Used to live near there, it was on my regular jogging route. I remember when it was just a disused train tunnel - then all the construction, then the new road layout on the A364... Nice to see the inside of it!

@NichtcrawlerX Год назад

"This needs the music from Thunderbirds" I know that feeling, it always plays in my head when I see those stair single seat elevators and the like. I also always point it out and I am quite certain by now it always annoys the people I am with...

@tapio_m6861 Год назад

Oh god I thought Tom had gone to the silly Tesla tunnel. The result is interesting, and I can only imagine that they have also done tests for those roof boxes for skis. They are known to be bad for fuel efficiency, but I would like to know how much.

@BuzzinsPetRock78 Год назад

I think the scientific answer to that would be: very. 😋

@web4639 Год назад

I do think that driving back and forth at a constant speed in a straight line would actually be an ideal situation for a computer controlled car (not a tesla, don't want to ruin the tunnel).

@SirDragonClaw Год назад

How are those tunnels silly? They seem to be used by 1000's of people per day.

@finngardiner5358 Год назад

@@SirDragonClaw single lane, no fire exits, build a tram are the main ones iirc

@tapio_m6861 Год назад

@@web4639 Make a queue out of all those cars and put more seats in them. And ditch the word "car", use something more to the point. Like an underground or a subway. Or a metro.

@rud Год назад

Legends has it that if you go in there at midnight on the shortest day of the year, you can still hear ghosts of trains past, going though the tunnel, their whistles blaring right though your soul.

@vigilantcosmicpenguin8721 Год назад

Someone's going to try trainspotting with a Ouija board.

@jaydavis2839 Год назад

I’m so glad health and safety made you wear hi-vis vests because all the traffic on that roadway

@u1zha Год назад

More like to make rescuers see them more easily, in case of a freak accident with all lights going out lots of smoke accumulating

@techdaemn Год назад

One interesting nit. Gradient aside, "perfectly flat" (or rather perfectly straight) is not flat for the purposes of coasting a car. Mentioned at the beginning, but earth's surface is curved, so if the tunnel were same elevation at both ends, but perfectly straight then effectively it's actually lower in the middle and you're going uphill slightly toward either end. If water leaked in, it would literally pool up in the middle of the tunnel eventually forming a curved surface. With the gradient and straight profile it means that the tunnel is effectively steeper at one end than it is at the other end, relative to the pull of gravity. All of this needs to be accounted for in their calculations.

@smeeself Год назад

Yes. They advertise a constant gradient of 1:176

@techdaemn Год назад

@@smeeself Cept if it's truly laser straight, then it is *not* a constant gradient in the way that gradient matters (coasting in this case). A level will measure different values at one end, center, and other end.

@quillmaurer6563 Год назад

This crossed my mind as well. Running these calculations (in a rough approximation that will at least give reasonable order of magnitude) I get a difference in angle of about 0.024°, .04%, or 1 in 2355. My guess is that this effect is so insignificant that it doesn't matter, even at the precision they are doing. Initially I figured this might be less than a rounding error for the given 1:176, but when I tried adding this new gradient I got 1:163, so it would be measurable in that given number - but still probably so insignificant they don't really care. 1:176 is probably the average through the tunnel.

@smeeself Год назад

@techdaemon Absolutely. Good point. But the gravitational difference between two ends of a 110km tunnel ( at sea level) is about 0.003m/s. For a 3km tunnel it is less than 0.000002. m/s ( I'm not sure but local gravitational somnolent might be greater than that so I'll let them pass this time) 😃

@smeeself Год назад

@@quillmaurer6563 I got 1:169 ( done very roughly too) but either way, I think your right, it's not going to factor into their work. 👍

@ericlotze7724 Год назад

1:06 I was about to be bummed, but they made them their own little bat hotel how lovely! (UF Has some MASSIVE Ones)

@otterylexa4499 Год назад

I've seen videos on the Catesby tunnel before but this was definitely the best. And a fascinating little bit of science as well, which demonstrates the advantage of the set-up. You'd need a lot more runs to get that data in the open.

@otterylexa4499 Год назад

As someone else also mentioned, you could also film a very Tom Scott video on the bat hotel. With an interview with an Environmental Conservation officer.

@tigershark2328 Год назад

As an Aerospace student who's used a Wind tunnel: THIS IS SO COOL I wanna visit!!!

@alucide Год назад

Nice to see the deviation in the measurements is the same as the resolution of the measurement: 100 fps 0,01 s. And now to be as pedantic as Tom would appreciate; the mass of the car does change, as energy in batteries has mass, it's just low enough that the wearing down of the paint on the car by air friction is probably more than the change in weight if the battery, not to mention the moisture loss of the driver or the wear of the tires.

@mehalld Год назад

One of the few good outcomes of the Beeching cuts, though the "unnecessary duplication" of other lines sure could come in useful now when we're stuck on capacity.

@officialmcdeath Год назад

GCR was the last and best engineered mainline of the steam era and Catesby Tunnel is testament to that \m/

@Schmidtelpunkt Год назад

Aaaand there I am sucked into the rabbit hole of following the geographic patterns of a former railway line through England...

@Crosier5961 Год назад

I had a friend who would only put $20 worth of fuel in his car because his logic was "more fuel = more weight. More weight = less gas mileage" so he saw that as the perfect balance. This just made me think of that.

@paulhaynes8045 Год назад

But it would have meant gradually putting less and less fuel in his car. Keep that car long enough, and you're not even going to make it to the shops!

@edopronk1303 Год назад

He's got a point. Although it is probably negligible, 20 liters more or less.

@Robert-cu9bm Год назад

But then you waste more detouring to the petrol station.

@bubblinebee Год назад

@@Robert-cu9bm This exactly! Stopping to get more fuel costs fuel, but my mom would never listen...

@vylbird8014 Год назад

@@Robert-cu9bm The solution is to illegally keep a big tank of fuel in your garage and fill up from that as needed.

@mejiavince Год назад

That is a really good tunnel.

@emmahealy4863 Год назад

As a caver, I can appreciate a really good tunnel. Thanks Tom

@eadweard. Год назад

As an absolute gash hound, me too!

@mrlithium69 Год назад

gl spelunking to the both of you!

@nitehawk86 Год назад

Would love to see a series where Tom just visits tunnels. Nest time you are in Pennsylvania, visit the abandoned turnpike tunnel in Breezewood. :)

@euansmith3699 Год назад

Adam Something is correct, even when it comes to designing cars, railways are the answer. Another weird, entertaining and informative video from Tom and his crew. Now I want to see the same experiments being run with different breeds of dogs with their head out of the window.

@zoom3184 Год назад

pugs gotta be the least efficient is my guess

@pattheplanter Год назад

And different sizes of evil henchmen hanging on to the roof with varying weapons.

@laurencefraser Год назад

Nah, if you're saying that about cars, you're wrong. There are real world use cases where a the car is, in fact, the best option. Just a lot less of them than is assumed when designing infrastructure in most of the world these days. On the other hand, it would be entirely correct to say 'when it comes to designing Roads, railways are the answer (most of the time)'.

@joshuaburgess7727 Год назад

I bet the acoustic sound and potential in there is incredible 😅

@quillmaurer6563 Год назад

Ask Richard Hammond about loud V8s and tunnels...

@speedincooper Год назад

7:42 - "that's the closest I've got to science in a long time" Guy from earthquake tower video: *cries*

@phyphor Год назад

"how's that for timing?" - it's almost like you have been doing this for a while! Top work, Tom.

@DaLoveDonkey69420 Год назад

I always love the timing with your dialogs!

@seanehle8323 Год назад

Hey Tom! Such a random treat to "run into you" at Heathrow a few days ago. Can't believe I lost my footing like that. It's still a highlight of my trip to have met you, even if under unfortunate circumstances.

@DogsWithPurpose Год назад

Glad Tom has been reunited with his true passion.. Tunnels

@teodorrozej4344 Год назад

4:01 As soon as he said deviation, my mind could only think of: "The missile knows where it is at all times"

@kindlin Год назад

Not by knowing where it is, but by knowing where it is not.

@smeeself Год назад

@@kindlin Forgive my ignorance but where is this quote from? Thanks.

@kindlin Год назад

@@smeeself The missile knows where it is....

@smeeself Год назад

@@kindlin Does that mean that you don't know...?

@incognitoaccount7510 7 месяцев назад

@@smeeself Its an explanation of how missile guidance systems work. Google "the missile knows where it is" Essentially, the missile subtracts where it is from where it isn't to find where it's going

@dmdragonfly Год назад

Went on a couple of tours of this during its repurposing. Amazing environment inside. Of course, we walked through, so took a little longer.

@markfryer9880 Год назад

Must have taken quite a while to reconfigure the tunnel and put in the ceiling and the lighting.

@Craigels Год назад

Another great video as per! I love how, even whilst providing an interesting and informative video, Tom is still able to break the 4th wall and make you think about the filming process for thsoe whom are not in the know.

@spblz Год назад

Wild how victorians built better tunnels than Elon Musk.

@jantschierschky3461 Год назад

Everyone can

@BloodyMobile Год назад

Nice burn xD

@barneylaurance1865 Год назад

Also wondering how that's defined. Won't it depend hugely on which exact points on the tunnel you measure at the beginning and end? I wouldn't expect the shape to be that precisely the same at both ends. Or is it based on an average of measurements from all around the top bottom and side walls of the tunnel at the two ends?

@Alex-cw3rz Год назад

@@barneylaurance1865 he literally described how they did it they used a laser that put out a beam from one end to the other and it was 3mm difference.

@wellwell7950 Год назад

That's not hard

@brianholmes1812 Год назад

I just love the thunderbirds style turntable setup they have

@mescad Год назад

I wonder how much having Tom in the car as a passenger affected the tests. Being inside of the car, of course he wouldn't add any direct wind resistance, but I would think his additional weight would affect drag. Likely more than the GoPros, I'd think.

@abydosianchulac2 Год назад

It would have been interesting since they'd have had the info from the run with the camera operator and equipment in the back, too, so they'd know how much he affected the run as well.

@toneddef Год назад

Perhaps they were doing a loaded vs unloaded run, to text the affect of weight. What you don't see are the six loaded suitcases and a bag of sand in the trunk.

@geoffroi-le-Hook Год назад

did we see him outside the car during a test at all ?

@martijn9568 Год назад

Tom being in the car would also add 70 kilograms of mass, which means that the car will coast for longer. Tom being in the car probably both negatively, as well as positively affected the test.

@listey Год назад

You had me at "Tom Scott" and "tunnel".

@belg4mit Год назад

I like this. Where possible, consider doing more "actually use the facility in some way", even if it is to test something silly.

@SockGoblin801 Год назад

You turn some of the most mundane into stuff I find fun and interesting. Your energy is great for a smile. Thanks for your work.

@billyruss Год назад

Walked through that tunnel back in the 1970s. Amazing piece of engineering.

@DaHaiZhu Год назад

I really appreciate that they were environmentally conscious enough to provide Bat Houses for those they displaced by the reconstruction. 👍👍👍

@aim-to-misbehave5674 Год назад

It's actually a legal requirement! Bats are a protected species, and you can face fines (up to £5k per bat) and jail time (up to 6 months) for disturbing their nesting sites, blocking entrances etc

@Esperologist Год назад

2:47 - Impressed me that you had to say the line about the camera operator not being in the back twice... to be able to get the shot from the camera operator of you saying that line to blend with the shot from the dash of you saying that line.

@eekee6034 Год назад

Haha! But I think there's a boring explanation: There was probably a camera stuck to the rear window or something.

@tdbla98 Год назад

The turn table at each end is brilliant! That's awesome. Also great timing Tom. Great video. Love this!

@KeppyKep Год назад

That's a nice tunnel. And I love how you gave us a little behind-the-scenes peek AND made that half the story of the video!

@davidf2281 Год назад

I'm waiting for the video in a couple of decades where Tom just sits down in front of the camera and says, "Sorry folks, I've run out of interesting things having made a video on every single one of them. Let's play cards or something."

@BunkerFox Год назад

That would, in itself, be interesting

@godzillas6301 Год назад

In 1945 in mexico 4 men sat down to play cards and each of them was delt a royal flush ........ True tale ...... now try to work out the odds which are mind boggling .

@thegurw1994 Год назад

@@godzillas6301 well, the odds of being dealt a royal flush is 4 in about 2.6 million. So the odds of 4 royal flushes dealt in one hand would indeed be astronomical.

@otterylexa4499 Год назад

He's already announced that he will be retiring in a few years time.

@kaspernbs Год назад

I think he already did a running out of ideas video.

@DirkFedermann Год назад

That reminds me of (and I had to look it up) the Laurel Hill Tunnel, where a Racing Team bought(?) the tunnel and used it to develop a race car in (almost) complete secrecy.

@gordonrichardson2972 Год назад

Was that a race car that only goes in a straight line?

@otterylexa4499 Год назад

@@gordonrichardson2972 I think it might have been a racecar that only turns left.

@AdemOmerovicBA Год назад

0:41 oh bro, the fact that you had to make that disclaimer 😅🗺️

@Oba936 Год назад

I really love it, when you show us the bits in the video where you are just happy about timing and such.

@TheFatVeganOne Год назад

The phrase "That's the closest I've got to science in a long time!" really tickled me 😅

@bastiaan1150 Год назад

Fantastic approach to measurements!

@giraffon5487 Год назад

It was a really good tunnel indeed

@DaLoveDonkey69420 Год назад

Love every video Tom!! One of my favorite journalist! Thankyou for everything you do!

@yellowblue_tt Год назад

that is a very good tunnel, 10/10

@HowlParanormal Год назад

We have one of these in Pennsylvania at the abandoned turnpike. They used F1 vehicles in it for testing .

@simonjohncasey Год назад

I love the concept of taking something from history and using it for advanced science

@simonjohncasey Год назад

I actually watched their marketing video on RU-vid and their tagline is “The future is here, and it’s 125 years old” 😊

@Soundhound101 Год назад

Absolutely nuts. I love the science you do Tom. Thank you kindly for sharing this.

@goatcat2737 Год назад

Ok I love the tunnel but I want to hear more about the bat hotel at the end?

@commodoresixfour7478 Год назад

Everything about this is cool. Including a old historic tunnel still being used and the fact they still care about the bats.

@procrastinathor4594 Год назад

Yes, Tom this is great! Love your content ❤ I never knew I was in a mood for tunnel today, but here we go.

@jlaortheshaman1451 Год назад

Everyone of your videos are amazing, I know more about the world, thanks to your work.

@noelward8047 Год назад

This is intriguing. I have spent many hours in wind tunnels investigating things such as wind noise in vehicles.

@minprez Год назад

yesterday i didn't know that it would cost you roughly 10 cents per 100 miles in added fuel consumption if you stick a go-pro to a car. but today i do, this is knowledge that I will carry with me for the rest of my life (or until gas prices change)

@DigitalDiabloUK Год назад

Id heard about this a few months ago; great to see Tom give more details.

@jamwil200 Год назад

Nice to see Tom covering this, having seen Motorbase and Team HARD test in it for BTCC!

@Craig-wp3pz Год назад

Always thought it was still disused, I often stare at the very fine ventilation towers by the A5 and M45

@LittleMountain90 Год назад

I was not ready for the phrase "Austin Powers 37-point turn" midway through the video 😂

@fsj197811 Год назад

That was cool, especially the end results. Thanks for sharing!

@ham1672 Год назад

There's also another nice abandoned train tunnel up in Market Harborough, which is now a walk and bike trail.

@mheermance Год назад

The tunnel has bats and a turntable. It is obviously a superhero lair.

@eekee6034 Год назад

Ooh! Yes, it must be! 😂 (by the way, it's "lair")

@mheermance Год назад

@@eekee6034 thanks for pointing it out. I fixed it.

@RayquaSr. Год назад

Tom, bustinh through the door shoort of breath, "I just found a really cool tunnel" Every sane human on earth, " I'm listening".

@brighturuloki Год назад

This is absolutely fascinating. And now I want to go for a drive down this tunnel ...

@thegentleartoffisticuffs6983 Год назад

Another week, another Tom Scott video making me invested in topics I have never cared about before.

@SauronsEye Год назад

I'd like to see the Bat motel and then the golf ball dimples on a car versus no dimples experiment to see if Myth Busters' got it right. Then an episode on how the engineers got the tunnel so level when it was made in the 1800s.

@smeeself Год назад

Yes to the bats and the interesting tests, but the flat ( not level) part is the modern test tunnel, not the Victorians

@andrewalexander9492 Год назад

@@smeeself Yes, I guarantee you that when they started rehabilitating the tunnel, the railbed whcih had been abandoned for 4 decades was not flat, +/- 3mm.

@smeeself Год назад

@@andrewalexander9492 Indeed.

@u1zha Год назад

@@andrewalexander9492 They weren't talking about roughness of the surface. Of course every dimple in the wall is also deeper than 3 mm, railbed matters equally little. Flatness as they refer to it means something like straightness, or - take the centroid of cross section at entry, take the centroid of cross section halfway in, take the centroid of cross section at the far end - and they would be on one line +/- few mm.

@smeeself Год назад

@Uldis Barbans The flatness means that if you shine a laser up the road, the surface ( not the 'direction') varies from the true straight laser by less than 3mm.

@DrBluefox Год назад

This is how you make an empty tunnel interesting

@yikes6758 Год назад

"we don't want to see the camera operator in the back, because he's... not there" was such a simple trick but it still got me. unmatched video editing the fact that you were doing that line in both shots must have been really funny for the shot where the camera operator was actually there

@smeeself Год назад

Are you sure that there ever was a cameraman? 😮

@spokehedz Год назад

I love that there is a constant "Oh, of course! Right! [you make the connection] That would make a difference!" in this whole video. Even the little thing for the turntable and the remote button, you'd think might not make a difference, but then they talk about the ICE versus the EV and then my brain goes: "Oh, of course! Right! That burns fuel... And if they had to turn around the car that would be wasted fuel. And now the turntable is the same time/distance between each run, so you eliminate one more potential variation. The remote is nice and flashy, but even getting out of the car to hit a button would add more time/variables to the overall data... That would make a difference!"