Can DIY Jetpacks Fly? - Mythbusters

[@blankfrankie3747]

"A guy in Czechoslovakia" is the only evidence I need that pyramids are magic.

[@rnchvnc]

My reaction was like "Wohooo, we got mentioned!.... Wait...."

[@LivingCoolness]

his name is Karel Drbal and he has been assigned a patent for a pyramid that is supposed to hold the blade. In the former Czechoslovakia ("Patentní spis č. 91304" you can find via google)

[@MrWnw]

My teacher at university knows (knew) the guy in person. Sometimes, he talked about the pyramid power in class with real belief and interest. Honestly, it was impossible not to trust him... I was a freshman and he had a higher than PhD degree.

[@kyuofcosmic]

The infamous pyramid power episode. Wow that ‘expert’ is unintentionally hilarious

[@pa4tim]

He is the proof LSD really damage your brain....😄

[@tristandunn4628]

Big time. Guy couldn't even string a coherent sentence together!

[@MichaelK_]

@@tristandunn4628 that could be a PSA about the dangers of LDS. Would’ve worked way better than dare lmfao

[@borntoclimb7116]

@@kyuofcosmic good for memes

[@quantumenergysolutions9128]

You cant expect agents of the matrix to understand pyramid power lol. They could not even get the School Girl Bedini motor to work. But a little girl managed lol! What do you expect from Atheists who dont know they follow Satan?

[@marloweshowe5476]

Adam has gone on record saying that Pyramid Power was a massive waste of time and he wishes they had never done that myth

[@mysenfandei]

I am glad they did. Now I've got something to show my sister who is still convinced that it's actually a thing. In her defense though, she has three kids and a job, so she definitely does not have time binge watching MythBusters episodes on KZbin.

[@quantumenergysolutions9128]

@@mysenfandei The double slit experiment proved the observer affects the outcome! These Matrix fools did it all wrong, the same as they messed up replicating the Bedini School Girl motor, that a school girl managed LOL. Tell your Sister she is correct ! Why do Rabbits grow up to 40% bigger in a Pyramid Hutch? Why do they dehydrate meat? How do they charge water with Life Force?????????

[@OohzyJohnDow]

Perhaps pyramid power has a different function other then a couple of tooth pick pyramids out in the open air inside a workshop ;) But hey! Who am I to suggest so ;)

[@maltesefalcon85]

@@OohzyJohnDow when i heard of it as a kid in the horrible histories awesome egyptians book i always thought of an enclosed pyramid which would protect it from dust light or other stuff

[@phoenixvance6642]

On one hand, giving magical myths a platform for discussion legitimizes the BS of them in some way. on the other, it gives a good example of empiricism clashing with magical thinking which could be enlightening to people that don't really grasp the scientific method very well

[@ozztelorman7057]

"Copper is a cool metal" is enough quote for me to immediately walk away from there 😇 True challenge should've been finding out what this guy's been snuffing.

[@Altinget]

When the sun shines on it, then its a hot metal....🥵

[@Charlie_Waffles]

Yea i also thought that he must be high on something 🤣🤣🤣🤣

[@volkerracho5954]

It's not even copper, it is brass :D

[@mycroftsanchez901]

That pyramid bloke sounded like he was on drugs!

[@bokami3445]

Magic Mushrooms will do that to you 🙂

[@BigFatCone]

@@bokami3445 No, not even close. Huffing petrol will though.

[@manmaker2000]

9:20 😂😂 triangle hat 🤣🤣

[@ThatGuy-sd3zl]

Seems his head is quite messed up.

[@janhaverkamp2842]

He soznd like Ozzy Osbourne

[@fellatiacumbucket3212]

😵‍💫

[@thirdiprodigy3579]

I think that guy has lost his marbles 🤣

[@ozztelorman7057]

The OG Pyramid Head from Silent Hill :D

[@roserichardson9480]

You'd think with the Build Team doing the most implausible woo-woo myth the show's ever covered, their "expert" would be the biggest scammer in the episode, but that Skycar fellow is on another level.

[@tbas8741]

yeah but that flying car works and was built, but regulations stopped it.

[@roserichardson9480]

@@tbas8741 You really believe that? That the mean ol' gubmint is the only reason you don't have a flying car?

[@arrowghost]

That Moller Skycar, which the show has been aired more than 10 years ago and still we're driving regular cars. "Where's my flying car?!"

[@bethaapple2102]

With Todays tech (drone,etc). Hobbyists build similar with bathtub or simple chair. But I think regulators won’t allow it for commercial use.

[@borntoclimb7116]

Flying cars are unrealistic for the Mainstream, Imagine 300 million cars in the USA are flying and all the accidents, collisions who happening

[@georgesos]

Yeah,and Mythbusters saying that this is a viable solution to traffic,instead of building cities that don't require you to have a car to live in. This program and the ties with the defense industrial complex makes them a mouthpieces for stupid ideas.

[@RenanDavidSoriaAhumada]

i just looked it up and they have upgrade it, now it looks like they are uing KerbalSpaceProgram for their videos, that and those 240p/144p videos

[@RenanDavidSoriaAhumada]

@@borntoclimb7116 And the Road Rage collisions falling from the Sky flying over homes

[@swedichboy1000]

10:02 Was that dude Drunk or something?

[@ApolloVIIIYouAreGoForTLI]

No just a Hippie... So he's probably high.

[@mysenfandei]

My guess would be on something psychoactive. He was not really there at all. But then I'm not experienced with drugs at all (other than the legal ones aka nicotine, alcohol and the internet), so I can''t tell for sure. Never seen someone as far past normal on weed either, so that's probably not it...

[@Qwentar]

Shopping for the engine for the flight pack, "Could I recommend this more powerful model instead?" Cue Tim Allen "Ahr ahr ahr More power!"

[@univera1111]

That was the best part of the show I watch it when it aired that year why I'm watching it now is I want them to use that more powerful engine with shaft drive not belt and see what it can do

[@jimking2692]

Things get interesting when Jamie is actually interested in the project. Also why didn't they use gears to increase the speed 🤔

[@jimhjortsberg2990]

The extra weight would probably just have negated any increase in lift.

[@Allanlbrr]

The drive shaft split already reduces like 17% of the power of the engine, putting gears on it would probably not make a difference for better.

[@user0000user]

You just would need to put a bigger pulleys on the engine for the belt.

[@Allanlbrr]

@@user0000user yep, that's the way, changing the ratio of the pulleys would work

[@MrMarinus18]

More speed doesn't actually get you anything. The engine needs to have enough torgue to spin the props. If you gear it then the engine could easily stall.

[@wilsonisme1]

Copper is a really cool material!

[@gordonmcneil0011]

The Gravity Industries Jet Suit still looks like winner when it comes to jet pack design.

[@onceuponatimeonearth]

9:36 oh my god this guy

[@aputin654]

🤣🤣

[@atvheads]

He had a bit to much of something.

[@xyz-zyx]

6:43 The dude is a blend between Adam and Jamie lmao

[@nekosarantango865]

There'll never be flying cars... people can't even drive down a straight road without crashing in to each other, imagine tonz of flying cars falling to the ground...

[@N13J]

Flying car traffic would be a nightmare to manage.

[@scottsuttan2123]

😂😂 right first master one axis never mind three ta four

[@grahammukuyu4660]

They will be AI controlled it will eventually come to pass it not impossible

[@scottsuttan2123]

@@grahammukuyu4660 you know people are F$#ked when they need AI because they fail themselves 😥🤡

[@jocax188723]

Funnily enough, with the quadcopter tech and flight electronics today, you probably COULD build an electric jetpack from plans on the internet. Gravity Industries Jet Suit aside (which, incidentally, Adam's been flying on), multiple drone based jet packs do exist.

[@john_molden]

There is still the safety concern. There is a reason personal flying devices are never going to be a commercial product. They are too steeped in liability. Remember people, if your device fails while you are in the air, you are falling to the ground with no safety net.

[@cycoholic]

They need some sort of parachute mechanism that auto deploys when it detects its falling past a certain rate. Problem with that, there is a minimum height for parachutes to work properly, and even then, what's going to help you below that minimum altitude?

[@RenanDavidSoriaAhumada]

Yeah What Happened to the GAGAcopter?

[@flemmingsorensen5470]

You need to he able to autorotate, or it will be a death trap (unfortunately...).

[@borntoclimb7116]

@@jocax188723 or a flying bathtub like the guys from Germany

[@nobodycares85]

Of course, there's Colin Furse's flying bike. Unstable as anything but, if you believe the video, does fly

[@nonegone7170]

That was like a 60 year old design by the time he built it.

[@babalonkie]

Mythbuster's just missed out on Gravity Industries... Jamie would of loved making that episode.

[@cycoholic]

Personally I'd love to see an update on the Williams X-Jet, also known as the flying pulpit. I know someone had bought the rights and patents for it. Thing looked amazing.

[@lool8421]

once i was bored so i got a few people to attempt some "realistic" flying in some game and ngl, humans are relatively horrible at flying and considering that we haven't evolved at all to fly and even birds tend to crash against the walls sometimes, i can easily tell that giving people an access to flight irl would have disasterous consequences, at least we would have to train people first and then be more strict than in case of cars, perhaps just as much as it is the case for planes... and even then you have to make sure that there's absolutely zero technical issues and have backup engines

[@borntoclimb7116]

The jetpack episode is legendary.

[@ChristianLanctot]

Wish mythbusters was around today so they could comment on this: kzbin.info/www/bejne/pJuQeqqsarN9gck

[@raylawrence1]

Just a comment on an interesting effort with this one-men flying machine.. The stability experienced by the Hiller machine and the De Lackner Helivector was due in main to keeping the cemtre of gravity ABOVE the rotor system. To install the engine low in the craft would make the thing VERY unstable. It might seem to be the logical thing to do but entirely wrong in this case.

[@markco_3419]

6:50 both jamie

[@SyntheticFuture]

36:48 I guess it's save to say that didn't happen 😂

[@liammcnair6831]

Why did they decide to move the engine lower on the frame? I thought the pendulum effect didn't work on helicopters because the thrust is not vertical like a fixed hinge.

[@ThePlacehole]

It doesn't. The Mythbusters aren't aerospace engineers, they're winging it

[@HalNordmann]

It definitely can't make things worse, no?

[@ThePlacehole]

@@HalNordmann It can, he had to deviate from the plan even more and make the thing heavier too.

[@themonsterunderyourbed9408]

​@@ThePlacehole Because... SCIENCE!

[@damonullerick6572]

6:50: One of the best quotes on the show ever. 👌

[@twinsen1949]

"Copper is a really cool metal" LMAOOOOOOO YEAH DUDE I TOTALLY TRUST YOU THAT PYRAMIDS HAVE MAGIC POWERS

[@johnquirk4896]

9:25 Imagine being a myth buster looking for scientific proof and you end up talking to Jerry!

[@92xsaabaru-]

7:00 I love how that line made it in the intro sequence from this really mundane context.

[@motelghost477]

36:46 Ten years huh? How did that prediction work out?

[@allanshpeley4284]

Not good, motel, not good.

[@stanislavczebinski994]

Even if those things were working great, be safe - and affordable (spoiler: They're not) - they still have the big problem of terrible fuel efficiency. Unless we have loads of free energy - these things will never be real. But hey - if I'd dumped 200 million USD into this - I'd probably believe that, too.

[@stanislavczebinski994]

And the idea isn't new. The whole "flying cars" idea is around since the 50ies - at least. And it still all comes down to efficiency. Unless you're able to build a VTOL glider - it won't happen.

[@themonsterunderyourbed9408]

​@@stanislavczebinski994 not true. All we need to come up with is some type of gravity manipulation technology.

[@stanislavczebinski994]

@@themonsterunderyourbed9408 Yeah - right. Where did I left it? Behind the time machine, left of the warp drive - or near the trans-dimensional travel device?

[@fookutube501]

Wow this was 19 years old,so much has change sense then

[@AsheCraftingCorner]

I know Torey and Kari never had a thing,but as a kid,and even now..I always thought,there was some spark there

[@TheStygian]

Yeah, there's a little.

[@jaykay1491]

I am convinced they did the deed at least once or tpry rly wanted to but was friendzoned

[@leobrent7926]

They absolutely did it! But they will never speak of it. Kinda like all my ex’s lol 😂

[@CarlosPCmx]

You can see when Kari looks at Tory or stands very near to him that she likes him A LOT.

[@allanshpeley4284]

@@CarlosPCmx Uh, no.

[@joedo8052]

7:04 In one of Jamies recent videos he said, that the "this is the 2nd biggest ... I've ever seen" was a joke regulary made by Tory, no matter how big something was you showed him. I love to see, how happy Adam is after saying it. (He mentions it at the beginning of [Origin of "Well, There's Your Problem" on MythBusters] on the Adam Savage's Tested Channel)

[@michaelhuntly-ball2474]

Really great episode and power to you Jamie for strapping in and trying!

[@CerberaSagaris]

And some plumber from GB made a hoverbike in his shed,… I guess for a lot less money. Go Colin Furze!

[@wolfgangkranek376]

"But it was too noisy." I believe, noise was the least problem the military had with it.

[@RonPiggott]

That flying machine duct fans reminds me of my sump pump when it jammed with sand and talking to a wonderful DeWalt tech about the tolerances. I think it would need precision measurement of the blue foam. I am not in any way blaming Adam. I expect you need to spend in excess of $50,00 to make this accurate to 1/16"

[@Randolph_M]

I speculate that the jetpack test failed because the propellers were not spinning fast enough. Someone building a machine like that would first check the specs of the propellers, in particular the fastest speed at which they generate thrust efficiently. Then the builder would select a gear ratio that would make the propellers spin at the highest speed allowed at the engine speed with the highest level of power output. It's possible that the engine would not be strong enough for that, so there might have to be experimentation with gear ratios. With no professional background in aeronautical engineering, I speculate that the main purpose of the cowling ducts is to prevent turbulence, as well as directing the thrust. Drones fly well enough without them. The Mythbusters made a good presentation, but I'm not fully convinced that the myth was busted.

[@MrMarinus18]

The myth though was that someone without a background in aeronotics can do this and the mythbusters do have a lot of experience in engineering and a lot of contacts. If they can't do it then it's pretty clear some middle class guy in his garage can't do it either and that was the myth. That a ducted fan machine can lift a human is no myth, I mean all you have to do is scale down a helicopter. The question is can an average Joe with only a lose idea of mechanics and a single trip to the hardware store do it?

[@MrMarinus18]

Cowlings are about scale and also compactness. For this application they wanted a lot of lift in a small form factor. With a helicopter you would just put bigger rotor blades on it and with a drone you can get more thrust for less additional weight by just adding an additional propeller. With this design though using a single engine having like 4-5 fans would require so much mechanical complexity it would not be reliable and would have added too much weight. They didn't yet have the powerful batteries and electric motors that allow drones to have up to a dozen rotor blades without being too heavy or become too unreliable. So if you can only use 2 rotors and they can't be too long then you have to add cowlings to maximize the thrust from them.

[@ossipeltonen397]

I was thinking maybe because they were testing the thing inside the shop. It there enough air to pass through in order to generate lift?

[@zarghamsaif941]

I'm going the tin foil hat route on this one. With it being TV and the FAA involved probably had the biggest hand in why this wasn't a successful experiment. Adam and Jamie are waay too smart to not be able to figure it out especially when smart guys like them are actually interested in the project.

[@MeaHeaR]

ALOOOOOOOMIN-NUMB 😂😂😁😂😂😃😃😃

[@simontay4851]

AluminIum! There are 2 i's.

[@Steve-ei2vh]

It's a shame they didn't research outside the US. In NZ the Martin company created a workable jet pack. Similar to what they did, only it worked. Could fly to 5000 ft at 60 mph tested and was quite stable with a parachute return system. But hey. If it's not invented in the US, it's just not invented...

[@bokami3445]

32:47 --> Is that 7 toes on one foot or two feet overlapping and missing toes?

[@pentatron3127]

18:40."nononono were going for that tower!'

[@Cleberdeolis]

OH MY GOD, Lester Crest 6:50

[@quantumenergysolutions9128]

They are so clever they could not replicate the School Girl Bedini convertor, that a school girl got a A doing lol!

[@daemonburns-waight2421]

Anyone know what the graphic is on Scottie's shirt at 8:42? I've definitely seen that character in the purple dress before and it hit with unexpected nostalgia

[@Ellerion2]

Where South went with North E. West? Where all his working plans went - south 😁

[@RonPiggott]

This was fascinating

[@daemonburns-waight2421]

14:54 Adam reminds me of a monkey witnessing a magic trick lol

[@audiencesmember]

What a great build! Loved this episode!

[@ewanbaxter9199]

This was a good episode, they were very close. Could the ratio be changed to spin the rotors faster, it looked like 2:1 reduction. Maybe if constructed of tubing like aeroplanes are rather than girders the weight would be significantly reduced.

[@KanuckStreams]

I remember in my highschool science book having to repeat the experiments with the pyramid shapes.

[@michaelmay5453]

It's kind of amusing because with current electrical engines this isn't a problem at all. Have you seen the platform ones with the small propellers that people get off into the air with these days? Turns out that what you really need is a better motor because ICE's efficiency is ~40% at the very best and have a rev limit, electrical engines ... not so much.

[@luizmattos9031]

I think that if you could increase the diameter of the central pulley that is on the central axis of the jet pack, it would considerably increase the rpm of the propellers. There was just one thing missing from the video and descriptions. Where did you get the source for this project file?

[@reyalPRON]

that cellphone belt clip on the hyneman is so retro :)

[@chrischarron6868]

This episode aired in 2005, its now 2024 we still infact do not have flying cars.

[@jakubpluhar4914]

37:18 Jamie: What do you want to do? Pave the whole planet with roads. Highways are getting full. Americans will literally try everything to solve traffic instead of actual public transportation lol

[@LeonardoMastrogiovanni]

blame capitalism and people like Musk who try everything to fuck with functional infrastructure just to make more money.

[@nonegone7170]

Anything but a big fat truck is sacrilege in their wal-mart parking lots.

[@themonsterunderyourbed9408]

Public transport is 🤮 Too many freaks stabbing people on there. I prefer my freedom to move around on my time anyway.

[@misstelanious2025]

Sorry but got to ask....... Wich 3d printer is you go too printer. Ive a neptune 4pro (all your fault😊) but at the time was looking at the bamboo range. Any chance of doing video with your thoughts on all your printers . Always great videos . Thanks

[@SmilingDevil]

Did you get the build over to the Nice Mr North E. West to accompany his drawers full of plans?

[@user-fm7db6ko4t]

Did the jet-pack reappear in the later episodes? Like the pneumatic actuators from the marching bridge myth EDIT: Found one in the build team using it as a windblower, and in the Mythbuster exhibition

[@torstenmautz195]

That private Helicopter would maybe fly easier If you increase the Diameter of the Rotors (and ducts). You get way more airflow/mass and dont get too mich weight ontop

[@blackstone3469]

Perfect for big cities and there traffic jam problems..... go for it!

[@ChristianLanctot]

Seems to work in Dubai. LOL kzbin.info/www/bejne/pJuQeqqsarN9gck

[@fabycho6791]

That pyramid one was borderline insulating

[@GryffieTube]

Obviously Jamie's moustache is too heavy, if he shaved it off, that contraption would easily fly!

[@babotobati2745]

Now, there's real personal drones

[@ChristianLanctot]

And jet packs. kzbin.info/www/bejne/pJuQeqqsarN9gck

[@twinsen1949]

Bro revived Czechoslovakia to prove pyramid woogabooga is real

[@ashleyobrien4937]

11:13 "don't point it at me !" that's what she said.....

[@CUMBICA1970]

LOL I remember seeing this "pyramid power" thing on Brazilian TV back in the days and I did put a banana for a month inside a paper pyramid. I dunno it did rot but not so much so kinda worked? Or was it a placebo effect of sort? Anyway it was quite unimpressive.

[@motelghost477]

It flies without a pilot, so they made a giant heavy drone.

[@mdnpascual]

Any KZbinrs who attempted to make a DIY jetpack or similar yet?

[@kamilZ2]

Wing rotation speed was to law. The gear ratio was wrong - it should be the opposite. The common gear (on engine) should be larger, and gears on wings smaller.

[@gdutfulkbhh7537]

Ah, the good old days, when the FAA inspected aircraft while they were under construction. (Boeing, I'm looking at you...)

[@aviator_king]

feeling younger watching this

[@frankonabigon2974]

Really tho lol

[@aviator_king]

@@frankonabigon2974 honest to God

[@Fruitcupper]

Forget a jetpack, get a power glider. Fan on your back and a paragliding chute

[@themonsterunderyourbed9408]

And then parachute into a stadium in Israel and run for the nearest baby?

[@Nivola1953]

We have a say in the RC plane flying community, “Take offs are optional, but landings are compulsory”, landings ….that’s your problem!

[@raindog6852]

It's me, the guy from the future. If only you knew what people are flying on in 2024.

[@esheppshepard]

10 mil dollars?! Sure not

[@Vision_Thing599]

Those props dont look to be counter rotating which imho is a rotational torque reaction challenge looking for a place to happen

[@michaelappleseed1993]

And I am not drunk 10:15

[@edgarcastro8587]

The first big design mistake is not to use rotary colt propellers, we need too much power and the lack of carbon fiber makes it unfeasible ...... I love this program the most

[@ChristianLanctot]

Jet engines! Modern compact jet engines seem to work. If only for 15 minutes. kzbin.info/www/bejne/pJuQeqqsarN9gck

[@Johny40Se7en]

I do still wonder if there'll ever be a backpack based jetpack like the Rocketeer... 🙃😅

[@CY3ERD0G]

Im sure the first jet pack was made by someone at home

[@donwest5387]

the Bell jet-pack was in one of the early James Bond movies

[@yo-yoyo5035]

triangle dude is.. well. He just is.

[@broo_sh]

i would use a heated string to get it right shape on those fans duckt.

[@christophermarshall5765]

The real problem with this is the props were not spinning fast enough to generate lift. The engine driven pulley needs to be 10% larger than those driving the propellers. Another way is to use propellers with more blades.

[@WilFredWave]

3:20 "Extremely dangerous" 2024 with available ones on the market, police using them and taxis ready to be deployed XD

[@allanshpeley4284]

Huh, where are police and taxis using jetpacks?

[@mortenhansen3455]

41:02 ... He couldn't just have used a.... I don't know.... A clean knife?

[@wayfarer13]

Where’s our flying cars!

[@ashleyobrien4937]

I wonder if they realize that with slightly larger props and possibly slightly more aggressive pitch angle their thrust would increase dramatically, and oh those belts..no no no....

[@_Molecule]

i appreciate the timestamps

[@nickyoung9108]

41:46 why does Adam have a Jafar knife (for all you Stargate fans, you know what I mean)?

[@iwasthererecording]

I think a paramotor seems a better way these days

[@joeredebom]

The pyramid guy sounds like Ozzy Osbourne

[@soundtrancecloud5101]

7 years and 10million 😂 sounds like the guys had some fun wasting time at the office. Drone setup can now be done for 20k

[@weorldedit]

Its now 20 year after this episode was shot and I dont think many households have a flying car yet.

[@ChristianLanctot]

We're getting closer to jetpacks : kzbin.info/www/bejne/pJuQeqqsarN9gck

[@johnskinner9697]

hell yeah love this ep

[@n0e0]

They didn't get pyramid myth right. Idea is that pyramid is somehow affecting how the water is having influence on other matter. So it is supposed not to sharpen the blade but rather slow blunting caused by water.

[@MultiNumenor]

It's still stupid either way

[@Legion563]

MB really scraping the bottom of the barrel with that pyramid of power shite...

[@steffanjansenvanvuuren3257]

Toon noisy??? And yet today the military make use of a jet pack with 5 jet engines on it.