Wind powered car that goes faster than wind

[@theandrebotha]

This is really very old technology, sailing boats and sailing cars can all go faster than the wind. In Australia a new record was set up, the sailing car went 225kmh in a 43kmh wind.

[@johnborton4522]

Even the fastest sailboats that you mention can't even reach windspeed when traveling directly downwind. This is where the Blackbird is different.

[@anotherperspective8263]

​@@johnborton4522 I don't believe that the Blackbird is different.. I think it is a scam...

[@Bigsupreme2000]

Ah, such adventurous efforts excite me a lot, great to watch this guy in a wind car accelerating beyond the wind speed 😎

[@synergyfiles3536]

If only there was a flux capacitor 2

[@eutopiarhythms8743]

Here after Veritasium's video

[@synergyfiles3536]

Hey wait, did Vertasium did a video on this topic?

[@eutopiarhythms8743]

@@synergyfiles3536 yes just a few hours ago, he drove it!

[@synergyfiles3536]

@@eutopiarhythms8743 Thanks. Watching it just now

[@pl2727]

@@synergyfiles3536 clown.

[@ZTenski]

What seems to hang people up about this is that they think adding friction to the axle in the form of a chain is going to somehow prevent the vehicle meeting or exceeding the windspeed when its travelling directly downwind. A sail powered car will meet windspeed whether it's travelling on ice or through molasses, whether it's on air bearings or the axle is connected to a generator, so long as the sail is large enough that it can overcome the friction. So it makes perfect sense that having a load on the axle will not reduce the top speed from wind speed, it will just take you longer to reach wind speed than it would with no load on the axle because you are introducing friction. And if you can transfer some of that load back into forward motion, then you can go faster than windspeed. It will just take you longer to get there, because of the load. In short, friction / load on the axle affects acceleration, not speed directly. If your sail is large enough, the top speed is fixed to the wind speed no matter what you have connected to the axle. And if that thing can propel the vehicle then you can exceed the wind speed. Interestingly, if there was no friction, you could accelerate literally forever by simply driving the front wheels with the back wheels via CVT and having an infinitely large sail, however we are limited by drag and friction on the wheels, in the gearboxes, in the bearings, etc. Also I've never seen an inifitely large sail lol.

[@jojolafrite90]

Here after that 10 thousands dollars bet video from Veritasium.

[@flemmingrasmussen8528]

“Sailing” faster than the wind speed is done on a regular basis in ice yachts, land yachts and even modern sailing boats. E.g the latest America’s Cup boats did. about four times the speed of wind - at any angle not dead downwind or upwind. The fastest land yacht did around 225 km/hour (electrocity )

[@wowalamoiz9489]

@@Kamadev888 It was actually proven a decade ago. Veritaserum basically gave the idea publicity. The vibrations on the vehicle were supposedly because it wasn't maintained. The inventor said in one of his videos that there were no vibrations on the original test of the large vehicle.

[@trollking202]

The year brain cells died.

[@stevekap8]

You don’t see the symmetry here? how does the propeller know which way to turn? Lets do a thought experiment… the vehicle is facing north, and the wind is going north, and let’s say the prop would go clockwise. Now, stop the vehicle, and change the wind to south, you say the prop would STILL GO CLOCKWISE! That makes sense to you? How could that happen? Hint , take a look at the original…. look at the controls that are available.

[@Rick_Cavallaro]

Nice video, but I think you lost me with the wheelchair on the conveyor belt. It seemed like you were in fact trying to harness energy from the belt to put back into the belt. Did I misunderstand?

[@synergyfiles3536]

Hi Rick, Its an honour to have you comment on the video. I was trying to say that we are trying to get the energy out of conveyor belt and into the motorized wheelchair.

[@billhampton6233]

Good point. Another thing not mentioned is the role played by atmospheric pressure. I think of it as turning the force of gravity into horizontal force. Weight of the air trying to fill the vacuum. The sun energy is causing the atmosphere, so that energy also helps propel the blackbird indirectly. You tapped into a energy that already exits. We do it all of the time. I believe that an atmospheric engine could be made using what you (Rick) discovered. My interest in this came from my windsurfing days. I have gone faster than the wind across it, so I was with you from the start.

[@jsinitials1488]

propellor-driven land vehicle? Reminds me of Mad Max.

[@ochmanek]

drag from the turbine is less than drag from a car body. The idea of mounting a turbine in front of a car is a great idea, which would reduce the drag that is currently caused by front of the car. Cars are completely inefficient, and a turbine in front would reduce the friction coeeficient overall.

[@papalegba6759]

no it wouldn't.

[@teorossi1149]

veritasiun said Yes and I do belive him. .

[@N.A._McBee]

The muzaq is quite disturbing and much too loud. Question is, what's the purpose of it in a teaching video?

[@millamulisha]

Wondering aloud whether the principles employed here could be used in other mediums, like the so-called ‘solar wind’ or even in flowing water.

[@hj8607]

If it was actually an accurate assessment of the process it would already be in use in the real world and not on some flat Earth style video platform

[@wowalamoiz9489]

@@hj8607 That's true, but this one's actually legit. Veritaserum made a video where he took this vehicle on a ride. It was actually proven true a decade ago. And obviously, it is not free energy, but I still have difficulty understanding it.

[@tatodobien2]

I'm here after watching Veritasium Chanel 😁

[@Marigada]

Nice but it’s still a big rig pused by wind, and you are forgetting about drag, and all friction coming from wheels and bearings. Nice idea but useless

[@papalegba6759]

it would never even move forwards as the propeller is facing in the wrong direction. the wind would turn it backwards lmao.

[@bryanjackson8917]

Here’s exactly what the DWFTTW proponents say: From phys.org/news/2010-06-wind-powered-car-faster.html “Cavallaro explained the car is able to move faster than the wind because the propeller is not turned by the wind. The wind pushes the vehicle forward, and once moving the wheels turn the propeller. The propeller spins in the opposite direction to that expected, pushing the wind backwards, which in turn pushes the car forwards, turning the wheels, and thus turning the propeller faster still.” But then, the wheels are turning the propeller because…? You know the old saying, if it sounds like a duck, quacks like a duck, and most of all, flies likes a duck, it probably is a duck. So the Blackbird sounds like a duck, quacks like a duck, and most of all, flies like a duck. And that duck is known as a “perpetual motion machine”. Quack, quack!

[@papalegba6759]

@@bryanjackson8917 it is absolutely, definitely, a hoax. but 'rick cavallaro' seems to have a lot of money to throw about, cos he's bribed a lot of people into promoting it. the only real question i have about this nonsense is where he gets this money from?

[@sanjuansteve]

So if you give this thing a push on flat ground with no wind, it will keep going perpetually, like the vehicle on the treadmill?

[@Heha323]

no it slow down cause wind powers it

[@visionvtm]

@@Heha323 how can you have such a narrow mind?! It's not a question for you, you probably woudn't be able to answer...how is it possible to believe such things...people think that the windspeed relative to the propeller remains the same when the vehicle is stopped and when it's moving...that's where the theory comes from...

[@visionvtm]

@@Heha323 if the vehicle moves at a speed of 5m/s and the wind at 3m/s... how much force is the wind creating on the back of the propeller?

[@Heha323]

@@visionvtm if you put 500 pounds of weight on an L cart then you push it you dont need to push with 500 pounds of force to move it because of a little thing called mechanical advanage, which I believe is how blackbird pulls off what it does

[@visionvtm]

@@Heha323 no...it's just that you have to add the windspeed to the speed of the threadmill...the tailwind wil have no effect on you if you run faster than it...how much will you feel the wind if you are traveling at the same speed? You don't...but the fan in the threadmill case was stationary while the ground was moving

[@Froggability]

Cut to 6:07 to skip "the obvious". And why not use a "wedge" diagram to enormously simplify your explanation. Cut whole thing to 3-4 min

[@synergyfiles3536]

Good suggestion. I suppose I spent way too much time on convincing that it can be done. This was based on my own experience of people not believing when I told them

[@denbecr49]

Obvious to some is not obvious to those who most need the intro to physics that insures they get à fully logical understanding of DWFTW.

[@papalegba6759]

@@synergyfiles3536 are you surprised that people don't believe you when you claim conservation of linear momentum is wrong?

[@gardentools2553]

The propeller is at an angle ... I got the same problem with Dynamic soaring in I've been an Amex soaring for 15 years and course people don't believe me ....

[@nettlesoup]

This is a perfect video. Covers every aspect that comes up regularly in discussions. Bravo!

[@baammulmuslim299]

Sir, Franklin's Thompson FTC generator are 93 percent efficient can we use for wind car

[@rodfreess6019]

"positive feedback loop" suggests a perpetual motion machine. The energy all comes from the movement of the wind relative to the ground, or the conveyor relative to the wall in the wheelchair example. No more energy is created by the additional speed of the wheelchair or car, that only affects the gearing of the propeller. No?

[@bryanjackson8917]

Here’s exactly what the DWFTTW proponents say: From phys.org/news/2010-06-wind-powered-car-faster.html “Cavallaro explained the car is able to move faster than the wind because the propeller is not turned by the wind. The wind pushes the vehicle forward, and once moving the wheels turn the propeller. The propeller spins in the opposite direction to that expected, pushing the wind backwards, which in turn pushes the car forwards, turning the wheels, and thus turning the propeller faster still.” But then, the wheels are turning the propeller because…? You know the old saying, if it sounds like a duck, quacks like a duck, and most of all, flies likes a duck, it probably is a duck. So the Blackbird sounds like a duck, quacks like a duck, and most of all, flies like a duck. And that duck is known as a “perpetual motion machine”. Quack, quack!

[@rodfreess6019]

@@bryanjackson8917 Yes, I meant that Synergy's "positive feedback loop" is misleading and probably inaccurate. Also, lift vs pushing misses the point, a sail is being pushed if it is directly downwind, or tacking at an angle. The angle is what allows the sail to travel faster than the wind, not Bernoulli or Einstein's theories of lift.

[@ChristopherGuilday]

@@bryanjackson8917 It’s not perpetual motion. The vehicle is consuming the energy IN FRONT of the vehicle, not behind it. It will eventually stop accelerating once the friction of the wheels exceeds the energy it can consume from the wind energy.

[@johnborton4522]

//""positive feedback loop" suggests a perpetual motion machine. "// When you put a microphone in front of an amplified speak, you get a loud squawk. This is because of the "positive feedback loop" in the system. Unplug the amp from the wall however and the squawk stops. Unplug the Blackbird from the wind and the motions stops. Positive feedback loop -- with an outside energy input. Not perpetual motion.

[@techhie1302]

What is NEVER stated in these explanations is the angle between the direction on the vehicle and the direction of the wind. It makes a huge difference to the argument. A vehicle travelling DIRECTLY downwind will NEVER exceed the velocity of the wind. There is NO differential air movement under that condition, hence the vehicle will get zero further energy to propel the craft. Think about it! In relative terms the vehicle is sitting in still air. Explain that one if you can.

[@johnborton4522]

//"A vehicle travelling DIRECTLY downwind will NEVER exceed the velocity of the wind. "// Except with the proper design this isn't true. Happy to make you the same wager the professor lost ($10,000) over on the Veritasium channel. He made the same claim you do and then had to pay up.

[@techhie1302]

@@johnborton4522 OK. I'll bite. Just for the clicks, of course. So just who is this mysterious professor? Name? College or University he works at. Can he be contacted? Perhaps he is too shy to come out and play? I believe you also got some cash out of Neil deGrasse Tyson? Are these people willing to confess their sin of doubt? Do let everyone out there know. Unless, of course, all this is a scam.

[@papalegba6796]

@@techhie1302 Linear momentum equations where v2 exceeds v1 are impossible. It's a hoax, hidden electric motors in the wheel hubs.

[@anotherperspective8263]

​​@@techhie1302 Isn't it odd that he never responded back.. He did the same with me when I called him out...

[@ionkon]

This vehicle is not powered exclusively by wind. There is only a finite wind speed required to make it go faster than the wind because the rotation of the wheels creates additional thrust.

[@bryanjackson8917]

In simple, plain, everyday English, here’s exactly how Tom Cavallero explains how the DWFTTW vehicle called the Blackbird works: From phys.org/news/2010-06-wind-powered-car-faster.html “Cavallaro explained the car is able to move faster than the wind because the propeller is not turned by the wind. The wind pushes the vehicle forward, and once moving the wheels turn the propeller. The propeller spins in the opposite direction to that expected, pushing the wind backwards, which in turn pushes the car forwards, turning the wheels, and thus turning the propeller faster still.” But then, the wheels are turning the propeller because the propeller turns the wheels which turn the propeller which…? You know the old saying, if it sounds like a duck, quacks like a duck, and most of all, flies likes a duck, it probably is a duck. So the Blackbird sounds like a duck, quacks like a duck, and most of all, flies like a duck. And that duck is known as a “perpetual motion machine”. Quack, quack!

[@Owen_loves_Butters]

But the wheels only turn because of the wind

[@ionkon]

@@Owen_loves_Butters Yes they move because of the wind but they require a certain amount of wind thrust to be able to create thrust themselves through the propeller.

[@bobbyhill6964]

Huh?

[@kungfreddie]

How would it work on a train? A train is not pushed by wind so u have to add energy.. so u would have to add the energy to drive to propeller.

[@peterworsley4699]

At 7.11 should be DWFTW not DWTFW ?

[@Marigada]

Maybe it’s WTF

[@stevekap8]

You have the wheels driving the propeller, and the propeller pushing the vehicle. That’s a perpetual motion machine. No, the force come from the wind. Now the challenge is to explain how the wind can move this thing down (apparent) wind, when it is going less than the wind speed, and also up wind (apparent wind, that is), when the vehicle is going faster than the wind. There is an explanation, but you missed it. What the video again, and pay close attention to the controls.

[@johnborton4522]

//"You have the wheels driving the propeller, and the propeller pushing the vehicle. "// Which is exactly how the Blackbird works. //"That’s a perpetual motion machine."// Nope. It's wind powered. When the wind stops, it stops.

[@michaelsprague5642]

Is there a way to use this idea for like a wagon you pull or a wheel barrow to push the handles of the wheel barrow alternately where the go around like a bike chain so you can keep pushing from one to the other while the opposite retracts.

[@alec-s]

The new flat earthers

[@papalegba6759]

yup. another massively obvious hoax/psyop being pushed by YT/google. btw google sponsored the stupid fake blackbird contraption in the 1st place. weirdos.

[@haroldwestrich3312]

DISBELIEF: why doesn't anyone seem to know about a thing called "DEFLECTION" ? It's similar to "PUSH" but it happens at an angle to the wind and it's what drives a propeller...... "LIFT" is a cool magical term but doesn't mean J - Sh oot because ANY AND EVER system that includes "LIFT" also includes "PUSH" or "DEFLECTION" ... to say "Lift" is powering a propeller is like saying "Positive electricity is powering my house" or "I have a great magnet that has an awesome NORTH side" WHAt the hell do you people think is happening on the bottom of an airplane wing??? Didn't you have those balsa wood airplanes when you were a kid? there was no Curve to those things - they just deflected the air in the correct direction. WAKE UP PEOPLE -----> THERE IS NO MAGICAL "LIFT" IT'S like none of you have ever dropped a piece of typing paper before ! it slices through the air like a razor and turns on a dime NOT just because of "LIft" but also and equally because of "DEFLECTION" WTF IVE NEVER seen such a strong prejudice as the denial of "Deflection" in favor of "LIFT"

[@msingh6208]

just found about your channel ..its so heartbreaking that you have so less views for such great content.

[@synergyfiles3536]

I suppose I would be better of opening mobile phone boxes and making videos of them. Its become better than what it was

[@msingh6208]

@@synergyfiles3536 you are inspiring many of us.just keep up the good work!

[@jkhan1969]

I use the wind to conquer the wind

[@Heathbarbcrunch2]

DWFTW. Oops You spelled it wrong

[@bernhardtmitdt2586]

Could be a good video, without the annoying loud background music

[@jounik8980]

U can charge electric car with wind turbine

[@hj8607]

Yes the ground is a fixed surface . The wheel is being turned by the motion of the cart . The cart is in motion by the force of the wind . The power of the wind is being transferred to the cart by friction . (wind must go around not easily straight and through the cart thus resistance and friction transfer of energy, some lost as just heat). IF there was some kind of sail to take side draft energy from the wind , not just from body wind drag . But not . Any more momentum requires more energy going in on a constant basis . At the speed of the wind the cart's DIRECT energy from friction is at its limit . The wheel rolling over the ground can provide energy but that energy comes from the momentum of the cart . END GAME . No propeller has ever been designed or exhaustively tested that can convert energy at even 100% , and never more than 100% no matter what smoke an mirrors you employ . Free energy from gearing would be the very first perpetual motion system . (and the forward motion speed and resulting head wind speed ,,,,, the hea wind speed would be TINY compared to the speed of the wind through the propeller blades that would be required to 'throw ' momentum into a rear air momentum that would equal the momentum forward the propeller would have to produce . SPEED of air through the propeller would be MANY (dozen) times faster than the headwind .

[@whatelseison8970]

A very simple analog of this principle is winding a yo-yo by pulling the string as it rolls along the ground without slipping. The yo-yo will start rolling at nearly the same speed as the string wrt the ground because the axle is small compared to the rim. As the string winds onto itself and its effective radius grows the yo-yo speeds up but it's always moving faster than the string. At a given instant, the ratio between the speed of the yo-yo and the speed of the string (both relative to the earth) will depend on the difference between that effective winding radius and the radius of the yo-yo itself. With a bit of thought it can be seen that the energy to accelerate the yo-yo or the vehicle is coming from the relative motion between the string or the air, respectively, and the ground, but the ratio between the speed of the object and the wind/string from a stationary reference frame depends only on how it's mechanically applied to the wheels, assuming the power is being extracted efficiently.

[@bryanjackson8917]

Here’s exactly what DWFTTW proponents such as Cavallero say: From phys.org/news/2010-06-wind-powered-car-faster.html “Cavallaro explained the car is able to move faster than the wind because the propeller is not turned by the wind. The wind pushes the vehicle forward, and once moving the wheels turn the propeller. The propeller spins in the opposite direction to that expected, pushing the wind backwards, which in turn pushes the car forwards, turning the wheels, and thus turning the propeller faster still.” But then, the wheels are turning the propeller because…? You know the old saying, if it sounds like a duck, quacks like a duck, and most of all, flies likes a duck, it probably is a duck. So the Blackbird sounds like a duck, quacks like a duck, and most of all, flies like a duck. And that duck is known as a “perpetual motion machine”. Quack, quack!

[@whatelseison8970]

​@@bryanjackson8917 The wheels are turning the propeller because they're linked by a transmission. It goes Down _WIND_ Faster Than The _WIND_ . That should be a clue as to where the energy is coming from; namely, the wind. It seems you're getting lost at the point where the vehicle matches the speed of the wind, yet continues to accelerate. I get it, this stuff is counterintuitive and since you apparently can't be bothered to find a yoyo and see for yourself what I'm talking about I'm not sure what else to tell you except: No, it's not perpetual motion. It bears no semblance to perpetual motion, and unlike a perpetual motion machine it's real and works. The energy comes from the relative motion between the air and the ground, NOT the relative motion between the car and the air. _With sufficiently low losses _*_any_*_ vehicle speed is possible _*_in principle_* . If you're watching this, I'm certain KZbin has recommended this Veritasium video about a 1000 times: kzbin.info/www/bejne/oKq0qJp4dsZ1l8k (Part 1) kzbin.info/www/bejne/r3TWmKKCmMSZsKs (part 2). If not, go watch them. Derek gives a better explanation than I probably can, his friend builds a mini demo version that's fully 3D printable, and he even gets to drive Blackbird ffs! Oh yeah and in part 2 a university physics prof bets him $10k it's not DWFTW and *loses* . Your own source even contradicts what you're saying. You're making a very bold, baffling claim, and backing up with nothing but an old saying. That's like, flat-earther level ignorance. Weak dude. Lame.

[@bryanjackson8917]

@@whatelseison8970 The Blackbird failed to produce the thrust predicted by the DWFTTW theory by a considerable ratio of 4:1. Full stop. DWFTTW theory claims that it is that thrust that makes it go faster than the wind directly downwind. Full stop. No resort to toy cars or yo-yos can explain that discrepancy, and until it is explained then the DWFTTW must remain in doubt. Full Stop!

[@whatelseison8970]

@@bryanjackson8917 "The Blackbird failed to produce the thrust predicted by the DWFTTW theory by a considerable ratio of 4:1." [Citation Needed] "DWFTTW theory claims that it is that thrust that makes it go faster than the wind directly downwind." Experiments show this too. 😁 Does physics apply differently to a toy or a scale model vs something a human can fit into? If someone built a gigantic version would that finally convince you? Perhaps you can explain why it appears to be so unambiguously possible. What's wrong with our methods, or our assumptions? What exactly are yours? It seems like you're simply assuming it's impossible because you don't understand how it works. I encourage you to prove me wrong; I love being proven wrong. Happens all the time. You're not even trying. Full stop. "The best that most of us can hope to achieve in physics is simply to misunderstand at a deeper level." - Wolfgang Pauli

[@bryanjackson8917]

@@whatelseison8970 I asked Cavallero for the amount of thrust produced by the Blackbird, as that was obviously critical to the workings of the DWFTTW theory. He couldn't produce that number. All he could tell me was that the Blackbird had dragged a "dyno across a parking lot"! Therefore, based on video, including data presented in the "physics prof loses $10,000 bet" video in graph at 9:32 in that video, as well as information re propelIer thrust in DWFTTW papers and web sites, I made my own calculations. Just basic stuff, not too fancy, nothing a high school student in a physics class couldn't do, follow, and understand. I represented them to Cavallero. He did not attempt to refute them, just called me names and said I didn't understand the theory behind DWFTTW. FWIW, yes I too understand the theoretical principles behind DWFTTW. I also believe that if a critical aspect of your theoretical calculations is at odds with your theoretical calculations, then it is likely that at least one of two things is happening: 1. Your basic theory as to how the observed phenomenon works is wrong, or 2. Your basic theory as to how it works is correct, but your calculations as to how it should work are wrong. Again, if DWFTTW predicts that a certain amount of thrust will be produced by the propeller which is being powered by wheels and said thrust will be sufficient to drive the vehicle down the track, but the propeller doesn't produce anywhere near that amount of thrust predicted and needed by that theory to work, then maybe something else is driving the car down the track. Maybe it is the propeller turning the wheels, and not the wheels turning the propeller. Or maybe the lift produced by the propeller is "pulling" the vehicle down the track. If you want, I'll post here what I calculated.

[@gliderarts3573]

Next lex cover dynamic sewing and thermals using a glider which is supposed to be impossible...... Or we can't do that because They don't actually have a glider and they can't Make Make a KZbin video about it with 8,000,000 views lol

[@buccleuch7621]

Thanks for your explanation: I just need to go into a quiet corner and mull it over. Before doing that, I would point out that, although your figure of 90% for the downtime of conventional cars is probably about right, some pretty well informed futurologist predict that the advent of autonomous (self-driving) vehicles will reduce this figure greatly as car owners will be able to share (hire out) their vehicles when not needed. Just sayin'.

[@logan-kf6nl]

it can't work at all.

[@infinitehexington]

@@logan-kf6nl shut up

[@papalegba6759]

@@infinitehexington no he's right. it can't work at all. in fact, as designed, it would move backwards. you can buy models off ebay for $5 that prove it.

[@bryanjackson8917]

Here’s exactly what the DWFTTW proponents such as Cavallero say: From phys.org/news/2010-06-wind-powered-car-faster.html “Cavallaro explained the car is able to move faster than the wind because the propeller is not turned by the wind. The wind pushes the vehicle forward, and once moving the wheels turn the propeller. The propeller spins in the opposite direction to that expected, pushing the wind backwards, which in turn pushes the car forwards, turning the wheels, and thus turning the propeller faster still.” But then, the wheels are turning the propeller because…? You know the old saying, if it sounds like a duck, quacks like a duck, and most of all, flies likes a duck, it probably is a duck. So the Blackbird sounds like a duck, quacks like a duck, and most of all, flies like a duck. And that duck is known as a “perpetual motion machine”. Quack, quack!

[@papalegba6759]

@@bryanjackson8917 'cavallaro' is an utter crackpot. it's like he's establishing a DWFTTW cult or something. very odd behaviour.

[@apkungen89]

Was the car with the wind turbine driving directly towards the wind?

[@synergyfiles3536]

Yes

[@denbecr49]

It went directly downwind at 2.7 times windspeed with the propeller used in the configuration shown here. Much later, for directly into the wind operation, the propeller had to be switched to turbine twist rather than propeller twist. Due to greater drag, it achieved 2.3 times windspeed.

[@baris5404]

@@denbecr49 it is a hoax

[@papalegba6759]

@@baris5404 it's the new flat earth.

[@Stellectis2014]

can you turn up the music more. It's got this really annoying guy trying to explain things.

[@khirod84]

But look is not good.. It needed further design

[@Marigada]

And wheel witch drives the propeller won’t slow the vehicle down? Friction and drag produced by the propeller? Let’s all go and put a generator on one wheel in our car and a motor in other wheel!!! Free energy dude!!!

[@silvertongue1144]

There's no free energy veritasium made it clear how the wind powered car work this is the link if you hadn't watch it yet kzbin.info/www/bejne/r3TWmKKCmMSZsKs

[@Albertkallal]

Yes, the wheels turn, and they turn the blades. And yes, that does take energy. And that does cause resistance. The only real question is can you for that given mechanical entery travel FARTHER then the inputs? And the answer is yes, you can. I mean, you can gear your bycycle that for one pedal turn, it would go 10km! But it would be VERY hard to turn such pedals. In the MOST simple basic concpet here? They are trading a given mechanical force (the wind) to make the cart move MORE and a LARGER distance. But, you have to have low resistance to do this. Boats (and those lake bed ice racers) for a a long time can travel faster then the wind. (not a surprise when you think of the angles at play here). However, going (moving) the SAME direction as the wind and going faster is a whole different matter. Those lake bed ice racers have been able to do that also (not only move faster then wind, but move faster then in the DIRECTION of the wind). When a ICE racer does this, it is still using a zig zag pattern to do this. And sail boats while able to go faster then wind? I believe it was only around the 1980's that such boats could ALSO move FASTER then the wind in the same direction of the wind. And again, with those boats, they again are using a zig zag pattern to do this. (often called tacking down wind). However, this cart can acheive this same effect, and not have to tack back and forth (zig zag), and it also can go faster down wing. In a 20 km wind? It will go 3 times faster (60km). So, it does not just exceed wind speed by a little bit, but by a whopping 3 times the speed of the wind!! In this mode, the rotation of the wheels drives the blades - not how you would expect (blades drive wheels). You can also have this cart go directly up-wind (against the wind). In this mode, they reverse the gears. In this mode the blades work exactly how you expect (like a wind mill, or wind turbine). In this mode, the wind turns the blades, and the gears turn the wheels. And in this mode they can achieve double the wind speed. (2x). So the cart in a 20km wind speed can go directly against the wind at 40km. But in down wind mode? It goes about 3 times the speed of the wind. And yes, this is remarkable effect - and surprise at first glance and thought.

[@papalegba6759]

@@silvertongue1144 veritasium described drag on the prop as creating thrust. he's a flat earther now.

[@bryanjackson8917]

In simple, plain, everyday English, here’s exactly how Tom Cavallero explained how the DWFTTW vehicle called the Blackbird works: From phys.org/news/2010-06-wind-powered-car-faster.html “Cavallaro explained the car is able to move faster than the wind because the propeller is not turned by the wind. The wind pushes the vehicle forward, and once moving the wheels turn the propeller. The propeller spins in the opposite direction to that expected, pushing the wind backwards, which in turn pushes the car forwards, turning the wheels, and thus turning the propeller faster still.” So the wheels are turning the propeller because the propeller turns the wheels which turn the propeller which generates thrust which drives the wheels even faster which causes the propeller to spin faster producing even more thrust and eventually the Blackbird goes faster even than the speed of sound! You know that old saying, if it swims like a duck, quacks like a duck, and most of all, flies likes a duck, it probably is a duck. So the Blackbird swims like a duck, quacks like a duck, and most of all, flies like a duck. And that duck is known as a “perpetual motion machine”. Quack, quack! P.S. - Cavallero says that the "propeller spins in the direction opposite to that expected". Actually, to tell you the truth, I didn't expect it to turn in any particular direction at all, and that wouldn't make any difference in the final analysis anyways.

[@Albertkallal]

@@bryanjackson8917 >>because the propeller turns the wheels which turn the propeller which… No, the propeller does NOT turn the wheels. Un-hook the gearing. Blow wind on the cart - it going to roll down wind is it not? (assume the prop is not geared). Wind blowing on the cart will cause it to roll, will it not? (of course!). Ok, so wind blowing from behind causes the cart to roll - the wheels turn, right? Now, hook the gears from the wheels to turn the prop? Again, perfectly legal and possible. the ONLY hard part? Can I gear the wheels from that wind force to TURN the prop blades the WRONG way (by wrong way, we mean if the blades were acting as a wind mill). And the answer is yes, I can do this by selecting the correct gear ratio. In fact, I can choose ANY gear ratio I want - I could gear the blades to produce 1 million tons of force (but they would rotate SUPER SUPER slow). So I can dial in ANY force I want to the prop - and I can gear the props to turn any direction I want (at this point, that does not prove the cart can work or not). But at least we have to agree that its possible to gear the wheels to turn the prop EITHER direction we choose. >which... It is the wind blowing on the cart that causes it to roll. that roll turns the wheels. Now with rolling wheels, I can then gear them to turn the prop! and I can gear the wheels to drive the prop EITHER direction. And in this case, we geared the wheels to turn the prop the WRONG way (wrong way as compared to wind mill effect on those blades). So watch this video: he turns on a fan - watch VERY close - the blades spin the wrong way. So, no, the blades acting as a wind mill NEVER occurs here - NEVER in down wind mode. They are ALWAYS turning the wrong way as to which they normally would. Since they are turning the wrong way, then the prop NEVER turns the wheels via gear. Now the wind hitting the cart DOES however make the cart roll forward. note VERY close when he is holding the model - the fan starts turning the blades (as we expect - wind mill effect). Now watch what happens when he puts the cart on the ground: kzbin.info/www/bejne/a4qxm4uBpcafmZI (I time stamped the start). I start at 4:16 - slow the video down - to 0.25 if you want in (you-tube has speed play option). And here is an example from the inventor: kzbin.info/www/bejne/pKbHc52ohKtmgqc again: blades turn WRONG WAY. So, the wind is pushing on cart - wheels roll, gears drive prop - So no, in this mode, wheels ALWAYS drive the prop rotation. Ok, at this point, the above does NOT prove the cart can work - but it DOES show how the blades spin the wrong way, and it shows how I am most free to gear the wheels to drive the prop EITHER direction. And that includes gearing to spin the prop the WRONG way as to what they normally would do. That's not free energy - it simply gears turning the prop the direction I choose - the force of the wind blowing on cart turns the wheels - the wheels thus then are geared to turn the prop. in all cases, the blades spin the wrong way. in all cases, the blades do not spin on wind mill effect. in all cases the wheels drive the prop. Now, as noted, once you get past above, we then can move on to the next part of the debate.

[@namisali]

So Derek was too late

[@gimabihc2854]

Not to late to win a 10.000 dollars bet, about this topic.

[@imrankharadi6733]

Sir solar data sheet pa video banaye us mea kuch cheze samaj nahi aati

[@wowalamoiz9489]

Bhai dunya English bolti hai, urdu/hindi nahi!

[@MrWEI55]

Land yachts have been sailing faster than the wind for decades. Current record is 202.9 km/h (126.1 mph).

[@denbecr49]

Faster than the wind, yes; on a reach. This is about going faster directly downwind, by arranging for airfoils to be reaching but confined to a circle (rotor) so the vehicle itself doesn't have to tack.

[@seblewongelminlargh5060]

it is so fantastic .tanks more

[@coherentproductions7620]

Most ridiculously successful hoax ever.

[@baris5404]

Yes, at least it exposed a lot of fake scientists.

[@coherentproductions7620]

I take it back - after much deep thought, and considering the evidence, I've figured out how it works - which it definitely does.

[@johnborton4522]

@@coherentproductions7620 It's greatest value has turned out to be as a demonstration that people often emotionally just to intuitive conclusions that turn out to be wrong. Congrats on an open mind from the designer/builder of the Blackbird.

[@papalegba6759]

@@johnborton4522 lmao models of your contraption go backwards. what a fool you are.

[@KirosanaPerkele]

@@papalegba6759 Instead of spamming about this here on KZbin, why not expose the hoax in, say, Physical Review Letters? You seem like a smart guy and judging by your persistence and confidence I'm sure you have irrefutable evidence. Before you respond with a "they only publish serious work", I would like to draw your attention to the article "Physics of Beer Tapping" (Phys. Rev. Lett. 113, 214501, 2014). Roll up your sleeves and start preparing the manuscript. I'm looking forward to it with great anticipation.

[@raybrensike42]

So let me get this straight. The car needs wind to go, but it goes faster than the wind by a propeller driven by what, the wheels, and it can go as fast as 2.8 times the speed of the wind. Let me check my math. 2.8 x 0=? (this is with no wind) Yep, it needs wind to work.

[@howardbaxter2514]

Yes, it needs wind, but it is designed so that it will go faster than the wind. Veritasium’s video proved that it works.

[@klokoloko2114]

@@howardbaxter2514 Why we do not have science papers about this?

[@howardbaxter2514]

@@klokoloko2114 I mean, the actual invention proves that it works. Don’t need a scientific paper if there is a proven large scale replica of it working.

[@howardbaxter2514]

@@klokoloko2114 also, there is this paper: www.researchgate.net/profile/Nizam-Uddin-2/publication/276175512_Analysis_of_Down-Wind_Propeller_Vehicle/links/5551d54d08ae739bdb924310/Analysis-of-Down-Wind-Propeller-Vehicle.pdf?origin=publication_detail

[@howardbaxter2514]

@@klokoloko2114 and don’t you dare come back with a whole, “it’s not a scientific paper” response. Engineering research papers are just as valuable if not more valuable, as they come from an actual design and carry raw data, an analysis, and equations to back it up.

[@stormdog6855]

Good explanation. A made a short video explaining another argument in favor of DWTFW. See channel if interested. The argument starts with the idea that the wind will blow an object downwind if the object is moving slower than the wind. We all agree with this. Next I proposed a vehicle with a sail (fins actually) that move slower than the vehicle travels. The fins go about half the speed of the vehicle. The fins move backwards relative to the motion of the vehicle. So the vehicle goes faster than the wind, but the fins go slower than the wind. The wind pushes the fins and the fins push the vehicle. This vehicle could kind of fit between the Greenbird in your video and the Blackbird. It doesn't require an energy based argument, only a drag related argument. I like how you mention that it doesn't work without relative motion between the wind and something else. It would not work for an airplane. I enjoyed your video.

[@synergyfiles3536]

Thank you. That was informative

[@bryanjackson8917]

Interesting explanation, the only problem is that the blades of the Blackbird's propeller are moving faster than the wind, much, much faster! (just considering their velocity and not the direction they are traveling in, that is)

[@donbrutcher4501]

All things are perpetually in motion.

[@anotherperspective8263]

There are scamners everywhere...

[@thebentley71]

Hello, welcome to 7/eleven.

[@trevorquinnell8515]

I have the best idea for maximum power and speed outa wind generator engines i just need to be backed up or funded

[@lyrimetacurl0]

If you just slow the car down to the wind speed then it will have infinite acceleration 😎

[@richardcloudbase]

I am sorry but thee are too many holes in your description! In the wheel chair example, you don't mention that is is not just the friction losses that you have to overcome. You allsow have to overcome the load that the generator puts on the wheelchair. it is no different to putting fans on the roof of a car, that you already dismissed. As for the description of how the propeller land vehicle - This makes little sense at all. Are you a flat earther too?

[@denbecr49]

Find Rick Cavallaro's completely accurate, more understandable explanations of how this works. It has been completely certified by NALSA using well calibrated electronics to verify it operates as claimed (and has established a new record category IIRC). It is not perpetual motion. It uses wind energy routed through wheels connected to the prop at the right ratio to achieve the same as a high gear in a transmission.

[@papalegba6759]

@@denbecr49 i've already seen a model replica of this being tested in the wind. it went backwards lmao. enjoy your flat earth hoax physics, crackpot.

[@papalegba6796]

The blackbird has never been checked for hidden electric motors. It is also the only vehicle to achieve the feat, not even a scale model has done so. It is a very obvious hoax.

[@abdulahadgujjar8208]

Haron bahi Urdu man bahe video banya.

[@synergyfiles3536]

Bhai Urdu main banai jo video uskay views saal baad bhi 300 ya 400 hotay hain. Main inshallah koshish ker raha hoon alag urdu channel kholon

[@abdulahadgujjar8208]

Thanks

[@arnastubuttwehak994]

The wheelchair on the conveyor belt only gets additional energy up to the point where it is going at the speed of the conveyor belt. It can generate power by slowing itself down against the wall, but it can't make power to go faster than the conveyor belt. When it reaches the speed of the conveyor belt there is no more energy input. It is in a static reference frame. It cannot be going faster than the conveyor belt, by taking power from the conveyor belt. That is perpetual motion. The ground and the ocean can be used to divert wind force. A ball on a track wants to fall directly down, but there is a normal force preventing that. However, it can go sideways on an angle and it will give up the same potential as it reaches the same elevation as it would have if it fell freely. It will never beat the free-falling ball. In a wheeled or sailing vehicle the normal force resisting the wind's push is provided by the water or the land. The wind finds that there is less resistance to moving you some amount laterally that is "borrowed" from the amount you move in a single plane. In a perfectly efficient zero-friction, zero-mass system, racing between two parallel lines of any length you would always get to the finish line at the same time, whatever angle you sailed to the wind. You would always have the wind-direction component of force the same, over the same period of time. And that is the only accelerating force there is. If you are going 45 degrees to the wind, your through-the-water speed will be 1.4 times wind speed. If you sail 89 degrees to the wind your speed will be enough to launch you into orbit. but you'll still get to the finish line at the same time as any molecule of air passing between the two lines. When you are going at the speed of the wind in the component of your vector that is lined up with the wind, the wind stands still relative to you. If the wind is going 12kt north, and you are going 17kt northwest, then you are going 12kt in your north-south plane, and there is nothing to drive you anywhere. You are in equilibrium, inert in the reference frame of you and the wind. There is no way to accelerate out of that frame of reference, no force that could make it happen. If there were, you would be able to set a propeller up in a windless room and have it generate energy. When your speed is the same as that of the wind, you can't extract kinetic energy from it. Everything else is sleight of hand.

[@kungfreddie]

You use a gearing system to get the high torque of the treadmill to drive a propeller to drive the cart faster than the treadmill. Sure the treadmill goes a certain speed but u also have to consider the torque.

[@kungfreddie]

But u are getting the energy from the ground. It's the wind that pushes the whole thing, then u drive the propeller with wheels via gears. And then u have the propeller, in its reference frame, pushing the cart forward. So u get all the power from the wind. It's just a trick that makes u think something strange is happening when it really isn't.

[@rodfreess6019]

Wrong. This has nothing to do with perpetual motion. The wind is supplying the energy. In the wheelchair on the conveyor belt, the conveyor belt is supplying the energy. If the wheelchair was anchored to the belt, the energy it could obtain from the wall is limited only by the strength of the apparatus or the power of the belt. The force applied by the wheelchair to the belt can be varied by whatever gear ratio you'd like. The wheelchair will never apply more POWER to the belt than it gets from the wall, but it CAN apply much more force at a lower speed. Try to understand that before shouting perpetual motion.

[@arnastubuttwehak994]

@@rodfreess6019 Oh well, that comment was quite a while ago. Sorry I offended you as I picked through the explanatory analogies.