openDog is back doing some mapping with ROS next week, Patrons and KZfaq Channel Members have it already!
@zoombahh3 жыл бұрын
TL/DR: put some vertical bars inside the tube to prevent balls from rolling back down, archimedes screw only works because its tilted and cant just flow down the screw like the balls. you're relying on the friction between the cylinder and balls, which is fine for grain or cereal that dont flow down the spiral. but with smooth atomic units like these balls a vertical bar or "cleat" in the tube would greatly increase the flowrate by preventing the balls from rolling back down. thats what i thought you were getting to with the vertical bars at 0:17 , but it never came in the whole video. please flip the red bits inside so they fill the gap between the tube ID and screw OD and youre golden.
@Bibibosh3 жыл бұрын
Put numbers on the balls
@joparsons203 жыл бұрын
So this is basically how the dough ball roller at little Caesars works.....
@gonzostwin13 жыл бұрын
Make the chute go back into the bowl and it will self feed
@purboyy3 жыл бұрын
Lazy susan
@travisknee30273 жыл бұрын
It's 100% going to work, it's called an olds elevator thank you Tom Scott!
They also usually have a stationary "wiper" in the sump, to increase efficiency.
@njorsing3 жыл бұрын
@@RiverMersey adjusted expiration to 2024
@andreyrumming68423 жыл бұрын
I remember seeing a grain farmer using this same method. If you didn't know, grain when it's powdered or freefloating is SUPER explosive and flammable. Turns out this design prevents air from building up in the screw, not only making the flammability problem go away, but also making the screw more efficient overall (Because the entire screw is filled with grain). There are pros and cons to the design, but it's interesting to do experiments like this and see what happens :) Edit: Just watched more of the video. That Tom scott one is the EXACT one I was talking about!
@SCU3A_S7EVE3 жыл бұрын
Dutch taught me this while we was rescuing Javier from them fellers in Guarma. Dutch always has a plan.
@christaphersimmons22163 жыл бұрын
I lived in a town of 350 in dead nowhere Iowa I watched first hand the concrete shoot blocks away when the olds broke and the grain bin went critical
@JKTCGMV133 жыл бұрын
I was thinking of that same video while watching this one
@Redact63Lluks3 жыл бұрын
The tube turning is useful but the bottom feed turning is the most critical feature
@HDfoodie3 жыл бұрын
Right. In fact, nothing would have to turn at all if we could somehow ensure that balls were continuously being fed in at the bottom. We just created a Giant plastic Ball Screw!!!
@stalkinghawk92443 жыл бұрын
Are you sure?. hm, here most definitely however just shoving in grain for example with a cylinder might just result in crushing. I think that the friction with the side walls becomes very important the finer the particles are.
@HDfoodie3 жыл бұрын
@@stalkinghawk9244 It could be easily tested by continuously feeding the balls at the bottom without the tube turning. The difference between this build and the Olds Elevator is the tolerances between the screw and the outer tube. In this design, there is only enough space for a single column of balls, therefore they don't require the outer tube to turn, just enough pressure from underneath to be pushed up the screw. Using smaller balls would be a better approximation. Maybe marbles?
@stalkinghawk92443 жыл бұрын
@@HDfoodie hm also should test powder of sorts, since it has massive friction problem around corners. like pushing powder through a pipe with a bend at worst it compacts itself.
@chrismofer3 жыл бұрын
yeah it would be far more effective and not need the pressure of the scoops on the bottom if the tube had ribs running up it that prevented the ball from rolling down. then it'd be like 1:1 rotation to ball movement, instead of spinning the tube much faster than the balls and hoping that some friction here and there shimmies them upward.
@tzisorey3 жыл бұрын
"If you think you know, put your comment below" +1 to the list of viewers who've seen Tom Scott's episode. ;)
@serbianspaceforce68733 жыл бұрын
where my tom squad at
@gracielaw3823 жыл бұрын
@@serbianspaceforce6873 Earth
@Braddles18023 жыл бұрын
If I had a dollar for every time James says "lazy susan"
@jaredhelder3 жыл бұрын
$10. You would be rich!!
@ArtSurvivesArtist3 жыл бұрын
He reminds me of that 5th, dorky member of the Beatles who got left out. Maybe he could voice Thomas the Dorky Tank Engine.
@calvinbedell3 жыл бұрын
you would have $10
@ghostnike9013 жыл бұрын
Some where in the world, there's a woman named Susan watching this video who is very upset
@OrangeC73 жыл бұрын
@@ghostnike901 Either that or she's having a good laugh
@richardoglesby29973 жыл бұрын
Totally should design the top part to feed back into the hopper and have yourself a good piece of kinetic art like a water fountain type thing
@tjriggs46962 жыл бұрын
Dude! I was just gonna comment the same thing!
@D-S-93 жыл бұрын
I'd seen the other video so I guess I'd cheated by knowing the answer? Very cool demonstration, and if you had the top chute eject back into the basin then you could leave it running continuously at a show or something.
@jamesbruton3 жыл бұрын
The balls will go onto the next stays, coming up in a couple of weeks...
@Bean-Time3 жыл бұрын
Why does your name have a thing
@desk-kun3 жыл бұрын
@@Bean-Time he's a channel member
@tormodhag68243 жыл бұрын
I got to ask because the archimedes screw always confused me. I always wondered why doesnt the marbles roll down the spiral or the water flow down? If Im not completely wrong or stupid, dont they have to be at an angle?
@Lotharyx3 жыл бұрын
That’s actually a great fluid dynamics demonstration! Notice how the elevator loses efficiency as the “fluid” (the bulk ping-pong balls) around the inlet starts to move along with the scooper. James uses his hands as baffles, but fixed baffles inside the sump would improve the efficiency by a great deal.
@Silverwing21123 жыл бұрын
It does, Tom Scott did a video about it.
@ShamWerks3 жыл бұрын
9:54
@botonduller3 жыл бұрын
Maybe you should've watched the entire video before commenting...
@patrickgardner22043 жыл бұрын
@@botonduller he did say to comment below.
@beefy2563 жыл бұрын
"What we need is more balls" Heh.
@gonzalogutierrez5103 жыл бұрын
Heh
@kameronstogner98743 жыл бұрын
Heh
@ajme_3 жыл бұрын
Heh
@beefy2563 жыл бұрын
@Nathan Ho 😥
@79bald3 жыл бұрын
Can’t believe no one said “That’s what said”
@karyjas13 жыл бұрын
Now imagine the screw turns too, but in opposite direction. Wouldnt that be even faster?
@peitz.design3 жыл бұрын
yes
@holyravioli57953 жыл бұрын
Would that not just cancel out?
@peitz.design3 жыл бұрын
@@holyravioli5795 Only if the screw is turning in the same direction. The important thing is the relative speed between the screw and the casing. The bigger the difference the faster the outcome
@ZNotFound3 жыл бұрын
Stop him. He's too powerful.
@renrutmat3 жыл бұрын
The important point is the minimal damage to the items being transported. If the screw moves there is more damage to the items. This was first proposed by a Mr Olds to minimise damage to grains. Turning the screw as well may increase speed but may increase damage to the items being transferred.
@martindalby39413 жыл бұрын
Yes it does work, saw on Tom Scott's channel.
@Johnny5Toy3 жыл бұрын
Came here to say the same
@beans13273 жыл бұрын
Just waiting for hasbro or fishersprice to steal this
@postualin65513 жыл бұрын
This gives me a feling that You Have a new project in mind.
@RubixB0y3 жыл бұрын
Why just a feeling... he tells you that he's building a "great ball contraption" out of 3d printed parts instead of Lego.
@dragon3x5603 жыл бұрын
me in the beginning : What no of course not Me at the end: sir, it seems you've used DECEPTION
@danielbender43273 жыл бұрын
suggestion for a follow-up: the same screw and tube, but the “obvious” way with the screw turning instead. What would you have to do differently to get the balls to lifr at the same rate.
@gfloyd20023 жыл бұрын
I would love to see the upper chute feed the balls back into the hopper at the bottom, making a self-feeding machine once you get it started.
@jdhannan3 жыл бұрын
No it's much better to direct the balls away and then put them back in by hand 😂
@alexstone6913 жыл бұрын
I havne't seen anyone 3d print stuff so professionally looking and with such volume
@icingdeath3 жыл бұрын
I liked how you narrated and built it as if winging it as you go without a plan, and everything admirably just fitting and ending up working together. Literally build as you go. Well done!
@mentalmelt3 жыл бұрын
Guess you like being deceived ;)
@shadowcard69233 жыл бұрын
It works with enough friction with the medium being transported or it’ll be highly inefficient. Edit: The sump added later in the video acts as the screw in this case, with less screw threads so to speak, which uses the other balls as the delivery
@TheAstronomyDude3 жыл бұрын
It's fascinating that in the thousands of years since Archimedes it took an Australian in 2009 to figure out you can spin the cylinder.
@niallmorland3 жыл бұрын
He's English...
@haack903 жыл бұрын
@@niallmorland The Olds Elevator inventor, not James Bruton.
@niallmorland3 жыл бұрын
@@haack90 ohh my bad dude it's been a long day
@yannickurbach56543 жыл бұрын
Well you can't in an Archimedes' screw. A proper Archimedes' screw works with gravity rather than friction, so you'd have to spin the gravity field.
@Gottenhimfella3 жыл бұрын
@@yannickurbach5654 Indeed. The beginning of the video misrepresents what an Archimedes' screw is, and how it works. It is NOT fitted in a tube, and it has to lie tilted, at more than the helix angle of the thread, or the water will flow downhill and out the bottom. In this (vertical) case with balls, the balls would roll downhill in the absence of a tube.
@swamihuman93953 жыл бұрын
Great stuff. Was hilarious seeing your test apparatus keep getting more and more involved! :D Zero resale value, though :D Keep up the awesome content. Looking forward to seeing your 'great ball contraption'...
@isthissiddh3 жыл бұрын
just add a thin vertical extrusion on the internal circumference of the tube and it will push the balls physically, preventing them from rolling back down
@JeroenBouwens3 жыл бұрын
My thought exactly. Without extrusions like you propose it's impossible to empty the sump, as the balls only rise up due to back pressure from new balls being pushed into the tube, which only works with very light balls like those ping-pong balls, but not with heavier ones such as golf-balls.
@cheeto44933 жыл бұрын
I came looking the comments to see if any other had mentioned it.
@kal90013 жыл бұрын
@@cheeto4493 I just said it myself in a reply to someone. I'm amazed how far I needed to scroll to find it, and I'm amazed James didn't do this already. Seems SO obvious, and it was even shown in the CAD model. We're either being played with, or James got tunnel vision on this and couldn't see it.
@sawyerklegr3 жыл бұрын
Was thinking the whole time that it is quite similar to a lego GBC, when you showed it at the end I was so happy! 😂 You will definitely enjoy making it, I personally build lego GBC modules and it is so enjoyable to try to solve the challenges involved with creating them.
@avejst3 жыл бұрын
Great project, just for the new year. Thanks for sharing you experience in this time🎆👍😀
@zfxpedals3 жыл бұрын
Dear KZfaq, Why did you recommend this video for me? I'm fascinated and grateful for the recommendation
@melcrose3 жыл бұрын
3d Fuel ROCKS. The pla-pro is insanely good.
@oddjobbobb3 жыл бұрын
You might have let the “catcher” at the top feed the balls into the reservoir and it would go and go and go and...
@verargertesspielen46293 жыл бұрын
Reminds me of the german based rollercoaster "Euro Mir" with its special lifthill. Nice to Ride!
@littlepastelkitten3 жыл бұрын
I love 3d printing because you can just make cool and random stuff like this
@CooperDuper30003 жыл бұрын
*pff* look at this guy... his videos are amazing! Thank you james bruton for making these educational, inspiring and fascinating videos! ❤👍
@Forcemaster20003 жыл бұрын
You should have had your "output" at the top feeding back into the tray at the bottom, that way you wouldn't have had to keep refilling it yourself!
@bairnonessie3 жыл бұрын
Olds Elevator, made in what is now a museum(I believe) in the city I live in.
@majorjohnson80013 жыл бұрын
I'd forgotten I'd seen the Tom Scott video but my initial reaction was "well if the screw turns and it works, then yeah, turning the housing instead would also work. Because which one's moving is relative."
@RichardGray3533 жыл бұрын
I'm pretty sure my grandma gave me a toy when I was a kid that did something similar to this. I remember being a little fascinated that the screw didn't move.
@AlRoderick3 жыл бұрын
While it doesn't seem like it, this was invented so recently that Mr Olds still holds a patent, so if anybody's thinking of incorporating a mechanism like this into anything you sell watch out. With either this style or a conventional screw conveyor, when it's perfectly vertical it's hard to deal with free rolling material like ping pong balls or ball bearings, ideally you want something that would sit still if you placed it on a ramp the same angle as your screw. it's the introduction of new material under pressure at the bottom that's pushing everything up, the screw just supports the weight of the material already on its way up the tube, because otherwise you'd have to work against the weight of the entire column of material to keep those scoops moving.
@NinoJoel3 жыл бұрын
How the hell is he holding a patent to somthing that is literaly over 2000 years old ?
@daanlutkewillink38933 жыл бұрын
@@NinoJoel Because the original invention had the screw turning instead of the tube around it. It's really weird that nobody thought of it earlier, but yeah. lol
@EvileDik3 жыл бұрын
@@daanlutkewillink3893 I question its patent-ability (unless Olds has some special non Archemedian feature) , all 4 designs* have been in use for millennia in the middle east, outer tube rotating is popular as it's easier to attach motive force(aka donkey)to the outer cylinder than the inner screw. But the US will patent/copyright anything that isn't bolted down. *Moving screw, moving cylinder, counter rotating cylinder screw, and co-rotating cylinder screw. I went and read the patent application, and the Olds elevator is a very specific variant, with particular reference to vertical orientation, a sweeper arm and specific clearance between screw and tube. The patent itself quotes prior art patents going back to at least 1988. It is not a patent for the concept of a motive tube with a stationary screw.
@robo15403 жыл бұрын
im gonna say itll work just because everything functions relatively to each other and who cares if its the tube rotating or the screw
@ABRBD3 жыл бұрын
For a school project in grade 4??? 5??? I made an Archimedes screw with PVC pipes and some tubing to make the screw part, and it actually worked. I'm pretty sure I got an A+
@tenchuu0073 жыл бұрын
*stares hungrily in hippo
@drsmegs3 жыл бұрын
Your gonna get much better results if you tilt the screw and tube even just a little.
@AndrewBlack3433 жыл бұрын
You do with the original Archimedes screw design (where the screw turns) I don't see an advantage of doing so when you rotate the cylinder.
@sprocket2cog3 жыл бұрын
Wintergarten " I'm building a musical marble machine " James "hold my beer"
@abyss94473 жыл бұрын
youtube subtitles: [applause] the video: balls moving up the screw
@nattsurfaren3 жыл бұрын
7:48 This is probably how an ice cream maker work. When it starts to harden only then it gets pushed up. Please make an ice cream maker video James :)
@w0lf-m4n3 жыл бұрын
Whel yes it's simple physics turning the screw or tube is ultimately the same thing in perspective of the thing tour trying to lift up.
@buggsy53 жыл бұрын
Similar, but not identical. For example: When the screw turns, the balls resting on the screw have momentum due to the screw rotation. When the tube turns, the balls in the base have momentum from the rotation. Another example: When the screw turns, the friction between the balls and screw resist the movement of the balls upwards, while the friction between the balls and the tube aid the movement. When the tube turns, the opposite is true. In both cases, the balls entering the base have to contain enough kinetic energy to overcome any momentum fighting against the balls being moved upward. You can see what happens when a new ball is not trying to enter the cylinder - the balls start to roll/slide down the screw under the force of gravity. The physics is simple, but calculating the magnitudes of the forces involved (even as a general equation) is much more complex. Note that the balls can only go so high, before balls can no longer be forced into the tube.
@medlimakar3 жыл бұрын
The LEGO Great Ball Contraption community has been using a similar mekanism for just shy of ten years; it has a stationary screw on the outside and a rotating column with vertical bars on it on the inside. It's known as a 'Spiral Lift module'.
@iopfarmer3 жыл бұрын
The contact angle between the screw flank and the balls (relatively to the pipe surface) is important. I think it would raise the effectiveness if the tangent at the contact point tend to line up with the pipe axis (30° for example, instead of 70° here?). this way will the driving force at the contact point be higher.
@iPrint3D3 жыл бұрын
Love the "simpler" videos James!
@wscamel2262 ай бұрын
My answer to question at the begining: Definitely yes, it turns really fast.
@jordanabendroth64583 жыл бұрын
I've seen the Tom Scott video on this so I'm going to go with yes
@Micksoffthings3 жыл бұрын
I leave this under every video I watched, it helps the algorithm.
@bowieinc3 жыл бұрын
My favorite. Please do more like these.
@aidenbagshaw55733 жыл бұрын
Thank you so so so so so so so so so so so so so so much for being one of the few people to realize that an STL on it's own isn't that useful.
@RussellNelson3 жыл бұрын
Wow, you have some balls to do that!
@nitor53983 жыл бұрын
Depends your tolerances and what you're moving on if it would work or not
@PalmettoMoon3 жыл бұрын
This gives new meaning to, No screwing around.
@AndrewDeLong3 жыл бұрын
I never knew that it would be possible for one to screw around with ones balls and be so productive about it.
@GeorgeBobeck3 жыл бұрын
This is a crude version of an Olds Elevator
@rdoes66963 жыл бұрын
Ball contraption plus engineering lessons. I like it!
@MrTacoSr3 жыл бұрын
“Will rotating the tube make it work?” rotating screw compressors: “Am I a joke to you?”
@GoldKnightProduction3 жыл бұрын
So the thing stopping this design from being extra efficient is that there's no groove on the tube for the balls to slot into. If the balls could only slide vertically upwards along the track, then the screw would provide the upwards force as it spun.
@WakarimasenKa3 жыл бұрын
Aah thanks for finishing the video with the Tom Scott clip.. I had paused the video to search for it since I remembered seeing some video about it.. But I thought it was Smarter Every Day talking about grain bins.. But nope.
@redactedbananas3 жыл бұрын
It would be cool if there was a larger tube on the outside, so they all fall back down and start over. And then use a way more ping pong balls.
@faytaliti3 жыл бұрын
Well, looking at it from the ball's perspective, all that would matter is the relative motion between the screw and the tube wall, so it's going to work just fine regardless of which one is moving from our reference frame.
@williamheckman45973 жыл бұрын
You could have probably figured this out with a simulation or with basic math, but your construction efforts are quite impressive.
@TheHengeProphet3 жыл бұрын
Well, this is half a screw drive and half an impeller drive. A significant part of the motive force is provided by the pressure caused by the impeller at the bottom drawing material into the screw. The screw provides a low-angle path which reduces gravitational influence on the material. The material is also aided by the wall to move around the screw. A pretty neat design in all.
@bashkillszombies3 жыл бұрын
"There's quite a few advantages," inserts main problem with silos. Yet is still not used in silos. :P I'm guessing the cost is prohibitive, and people prefer to risk the explosions. ;)
@shykitten553 жыл бұрын
I'm not a rocket scientist, but here's my theory: The balls are spun and gain energy. They are moved IN and so as with the conservation of angular (something) they will move faster. Repeat as the next one comes in behind. Also, friction from the outside all and the ball will make the ball move "forward" and thus up. Oh, and I love your toys behind you.
@FifthConcerto3 жыл бұрын
It should take some effort to get the first ball in, and I don't know if one ball could easily make it up the screw. However, once the tube is seeded, turning the tube knocks the balls around in a way that simultaneously has them pushing against each other, pushing against the wall of the screw and the wall of the tube, and the floor of the screw. This means the balls will be pushed to roll between the screw wall and the tube wall, and the incline of the floor will cause this rolling to be uphill. This will be helped by the balls pushing from behind, or at least helping to prevent backsliding once a critical mass of balls within the tube is obtained. In short, relative to the frame of reference of the balls, it should be essentially identical for the screw to turn, or for the tube to turn because the same forces are exerted on the balls in either case.
@sgavy3 жыл бұрын
You should put stripes on the screw to show its stationary, might puzzle some onlooker's who dont immediately see the tube spinning.
@markhorstmeier87343 жыл бұрын
I would love to see you take some of the mechanisms from "507 mechanical movements" and 3D print them. There are several accounts that have animated the CAD but it would be great to see them in action. I would pay to have those especially if they were parametric or scalable
@salec75923 жыл бұрын
Now I am wondering if this could be made flexible, similarly to flexible shafts in sleeves, making "active pipelines" to transport small grain materials and fluids. Also, what if the design was reversed, so that inner core was smooth and cylindrical, and the spiral ridge (path) was attached to outer wall? For my former idea, that would mean using almost every part of existing flexible shafts, replacing only the sleeve and adding side ports for transported material at endpoints.
@eththe3 жыл бұрын
me: reads title also me: its the tube around it
@snagh3 жыл бұрын
You surely have balls for that design
@douglasmaclean58363 жыл бұрын
awesome video James !
@superjimnz3 жыл бұрын
The scoops are the key addition, as they force the material into the system. The friction with the sidewall does also help, but it's mostly about the scoops.
@NomaddUK3 жыл бұрын
James, what a load of balls mate!
@ws60023 жыл бұрын
It could work, but a couple of factors are can have a significant negative effect. 1) Obviously, nothing is going to happen unless the spin of the outer tube causes the ping pong balls to spin. Let's call the rotation of the tube (s1) and the induced spin that of a given ping ping ball (s2). The ratio c1 = s2/s1 is going to be between 0 and 1. 2) If the ping pong balls are induced to spin, and there is no slip between the balls and the ramp, the balls will climb up the ramp. But there is going to be slip between the two, so the efficiency c2 is again going to be somewhere between 0 and 1.
@crawkn6 ай бұрын
I was surprised that the "Olds Elevator" works, but since it seems to rely to some degree on friction, I can't imagine it is very energy efficient. You could elevate grain by any number of inefficient means, but I'm not sure why you wouldn't choose a more efficient one.
@WistrelChianti3 жыл бұрын
Great to hear more engineering concept stuff on the way. My most recent project has been on trying to get as many different actuators going off a single motor. Been a really fun design challenge just to get the motion down. Still going on the design though to turn it into something that is actually printable/assemblable
@Rob_653 жыл бұрын
I think that if there are no more balls in the reservoir, the "pump" will stop pumping. I also think this does not count as an Archimedes screw. But this is a very nice feature for something like a marble machine that uses ping-pong balls. In an Archimedes screw pump, the medium is pumped up due to the fact that is is trapped in a small pocket where the medium cannot flow back down again because the screw is angled. This system uses a combination of balls being pushed up because of the force of the balls entering the scoops combined with a bit of friction from the tube on the balls. This only works while the balls are light enough and have enough friction. This will not work with tennis balls or glass marbles.
@marcanthonykami54733 жыл бұрын
All these years on and you still have the trusty old Taz 3d printer 👍 keep up the great work buddy 👌
@nottelling65983 жыл бұрын
The only reason I knew this before the video is because it's a surprisingly recent innovation in moving grain around without causing explosions. It's also great because driving the outside is mechanically more simple than driving the shaft. Just put some gear-teeth on it.
@VoprotheGamer3 жыл бұрын
Begining video: I think it can work if the walls are pressed up enough to touch the balls. End video: I knew it would work.
@avada0 Жыл бұрын
Well, the catcher part at the bottom pushes the balls in and the balls push each other up. So the usefulness is limited it wouldn't work with water, or grains. Also I'm not sure if it counts as an Archimedes screw, which is always at an angle and carries water/grains up in pockets. (Water just flows away, and the grains friction would be too much beyond some point) It's a helix on which balls are pushed up.
@TurkishKS3 жыл бұрын
Really nice build. Since it's demonstrative, a clear catch and channel/tube that returns the balls to the feed would've been a nice touch, saving you the hassle of reloading.
@SmokyFrosty3 жыл бұрын
James meets GBC? I thought Christmas came only once a year!
@gagreflex94043 жыл бұрын
you should 3D print a final slide so the ping pong balls drop back into the base - for fun make it look like a helter skelter :)
@patrickwinterbourne85163 жыл бұрын
Awesome project
@stens78203 жыл бұрын
This behaviour is well known. Many applications already exists - elicoidal pump to pump up water (just replace the small balls with water) -continuous flow turbocharged engines (ex Mercedes Kompressor)
@Shadow_Architect3 жыл бұрын
I’ve seen something like this made in LEGO ball contraptions where they would go up the screw being pushing by sticks
@MrAtalon3 жыл бұрын
As an individual piece you could just attach a slide to the top catcher to feed the bottom but if it is going to be part of a larger system than that works to. Can't wait to see what you come up with.
@jonathanfoss78252 жыл бұрын
I think it'd be neat to have a desk toy of a miniaturized version of this that fed the balls back into the resevoir.
@toxicgamer28353 жыл бұрын
For the final slide part I would have made it to where it loops back around to the bucket with the balls and make it like a infinite loop
@XxCauzhavokxX3 жыл бұрын
It’s like an automated paintball hopper.
@semegraph Жыл бұрын
Some vertical stripes on the yellow screw would make the illusion far more effective.
@spaghettisama3 жыл бұрын
Had a feeling this type of screw was already in use in either farming or tunnel digging, looking at other comments it turns out my guess was correct! Slight confidence boost: gotten.
@FlyingAroundOz3 жыл бұрын
With the ball feed in scoop and the weight of the ball supply, you don't even need the screw in the tube. A simple tube fed from the scoops would do the same thing if it had a sloping entrance to reduce the entry resistance.
@Alphoric3 жыл бұрын
Couldn’t you make the ping pong balls fall back into the area feeding the balls like an endless loop kinda thing
@WernerBeroux3 жыл бұрын
13:30 It works because they spin isn't explaining anything. The reason they spin (relative to the screw) is because of mostly 3 forces: 1. The opening at the bottom which are inclined and especially with the pressure if all the balls in the basket, actually strongly push all the other balls up. If instead you had a flat opening, the whole thing wouldn't work. 2. Friction of balls against acrylic cylinder, helping a lot to makes them spin 3. Pressure equilibrium: It'd work with water as well and there it's easier to understand that you'd get the balls in the basket and in the tube to be at the same level (supposing there are no frictions or you just make the whole thing shape to achieve the same) Note that the Archimedes' screw that you referenced in the beginning only works because it's inclined. This mean that due to gravity even stopping it would keep most of the water in the tube. It'd only work vertically with a LOT more speed. This is important because turning an inclined tube isn't the same here. In you turn the tube of an Archimedes screw, without turning the gravity vector (Earth), then you only have the friction of the cylinder. Supposing a perfect screw and cylinder, it would actually not work anymore.