Large 'Pull String' Spinner
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- Опубліковано 2 чер 2020
- A 'propeller shaped' flywheel can store rotational energy, which when converted into thrust, launches it high into the sky!
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Well clearly you need to make it even bigger and faster. It's the only logical next step.
And dont forget to sharpen the edges :)
Time for Carbon Fiber and transsonic profiles ;D
Yes please! :D
Wonder how that would end if Colin Furze got on board... :o
And maybe use a lawnmower moter to spin it...
And make it out of steel for both additional weight and strength for when it inevitably tosses itself into a bush!
Great noise, terrifying blender XD
The all new Blendtec Air™
How did you post your comment hours before the video was released?
@@BlackShark-ed4jy He's probably a member, and got early access to the video
The Birdie Blender!
[Tom] Hmmm, a blender motor....
Everybody gansta til this man makes the discs from the incredibles.
Darn i used to have fear of those things
Beat me to it
And chicken little
@@jaykirkham5090 r/beatmeattoit
@@Kyo-bd4tw when I was in primary school teacher distributed kids newspaper and headline is about this movie and mentioned “four eyed chicken” in which four eyed actually meant people with glasses in chinese and I didn’t know that and I thought it’s a monster that can morph it’s face to have four eyes scared tf out of me
"do you hear a helicopter?"
*Throat suddenly slit by a metal propeller*
69 likes
Nice
Like to see this this fly though a smoke of fog bank.
YES! FLY IT THROUGH SMOKE!
a smoke of fog bank ??
@@Andrew-AF Never seen a smoke of fog bank?
Andrew Ferguson Yeah, no idea what’s he’s jabbering about.
@@sliceofbread2611 No sir but now I'm dying to see one !
Doing spectrum analysis on the sound at full power revealed that the rotational speed just after lift off is
4280 RPM (214 Hz) [listed in video 4340 RPM, within 1%]
While just before the lift off it was
4620 RPM (231 Hz)
That is a a 7% loss of energy due to the lift off mechanism.
Probably it will be more efficient when the angle of the red and blue mechanism is more favorable.
You could see in the beginning that the mechanism uses some energy to launch it straight upwards by a 'ramp'
I could tell that he is losing energy quick because of his aggressive angle just by watching the video.
Hugo you are the boss!
You're not fooling anyone. You're actually Joe Lycett.
Whoa, Joe Lycett is here! I bet Mark Silcox gave him these stats.
Why does everyone on UA-cam have absolutely beautiful homes/gardens
There are not many out there that will be letting you see the 'unmade' parts of their homes. With a few props, you can give virtually any impression you want.
We know that Tom has a nicely equipped workshop and he lives in or near the countryside. Apart from the few corners of a garden, you don't see much else though the nice weather helps a lot.
Poop
Money
*Homeless UA-camrs left the chat*
Also yes UA-camrs can be homeless, Its called a phone with mobile credit.
Production quality
The most inefficient, but also the most fun, way to mow grass.
When it's launched at 40º, at 3:58 in the video, as it glides, it flattens out and turns to the right. This is because as it starts to move forward, the blade that is sweeping forward generates more lift that the blade that is receding. Gyroscopic precession then rotates the disc flatter and to the right, causing the levelling off and turning that you see. This is something that happens to helicopters when they move forward, called "Asymmetry of lift" en.wikipedia.org/wiki/Asymmetry_of_lift. The pilot can correct for it to a certain extent, but it limits the maximum overall speed of the helicopter.
I'm glad I visited this TED talk
Isnt that the same thing as when a perfect stone skipping occurs? All the best throws ive seen have turned to one side after a few skips.
You are a badass
And then as it falls is it in an autorotation?
8ball
That was pretty cool but I bet the flat nature of the ring gives it lot of drag, would be cool to see another design where it's like the toy one. Harder to make though.
Not too much harder as long as you have access to a welder. Make the outer ring out of a strip of metal with slots to weld the tips of the blades into.
Large dia sewer pipe of some sort would make a nice ring for the airfoils to put into edit: you could get a (most likely even free of charge) cutoff at the next big construction site. It would most likely be the green polyethylene you can‘t glue but screw. PE would maybe lack stiffness ime but there are pvc ones too and all of them should be nice to work with.
I would like to see that too. I think he should re make it with a band around the outside like the red plastic one.
@@HrDernacht - Also sand-able to an aerofoil itself - but on the inside or outside?
Lod dude he could try both methods. Although the proven one with the ring on the outside is obviously the safer choice. Would really like to see that!
The real question is “how long would it skitter around on the ceiling of the living room for?”😂
Heretobenosey yessss
This needs to be answered
Find momentum and friction between ceiling and thing go go go
"I made a thing" made a giant beyblade, id assume itd be similar to that, just way more dangerous considering itd fall while spinning. Instead of run into your leg itd be the head, neck, chest.
Edit: made this comment a little too early, i dont think this one has enough mass to hurt like the giant sawblade top of death. Still though, dont try at home.
I had a toy given to me, it was a handle with a spiral shaft attached, you pushed a round collar that was underneath a circular ring with three blades. Tried it out at my grandmas house, it hit the ceiling and started grinding off the stipple, just raining while powder down for 10-15 seconds lol I’ll never forget how hard I laughed 😂
2:40 Shiny flying disc, spirally bent grass on a field... It reminds me something...
"X-Files music is playing on a background"
Make sure to sharpen the edges so it can cleanly take someone's head off
Probably make it bigger too?
It was a weapon in Unreal and Unreal Tournament '99
calm down there Oddjob
🤣
r/cursedcomments
And now for the world's first game of competitive aerial lawnmowing.
Lmao
William Platt for a second I thought it said anal lawnmowing
le smart boi wtf
😂😂😂😂😂😂I’m dead now
Simple trick to store more energy in the Spinner: add weights to the outer rim. maybe some lead fishing weights, covered by an (aerodynamic!) 3d-printed cover
Becomes a balancing act because then more of the lift is countering the added weight
Or a v8 engine
@@tbmx5685 made my day :D
@@jonathanstevenson8948 and distance of mass from center is also squared as well
@@jonathanstevenson8948 indeed, though I was talking about energy or moment of inertia rather than balance
Forget about the propeller! What about that lawn! You are giving me a run for my money!!! Seriously awesome video!
Lol I had to go back and look! I know if YOU say it's a nice lawn, it's going to be pretty damn nice.
lol dude
4:11 listen to how cool it sounds when its passing by, it honestly sounds like a real helicopter going past
the most interesting part to me is that it shows that the majority of the spinning noise you hear from a helicopter isnt actually from the motor, but the sounds of the blades going through the air. a similar effect happens when you swing a sword or long stick quickly through the air
That's Doppler Effect for ya.
On today’s episode of Tom Stanton: Tom accidentally makes a UFO
And tiny crop circles
Crop circle explained.
On today episode of Harry Gao: Harry Gao doesn't know what UFO stand for
redstone craft guy it’s a joke, and it’s a ufo to the other people regardless : *Unidentified* flying object. Since they don’t know what it is, it’s a ufo regardless.
@@superslimanoniem4712 It wouldn't be a UFO if we all know what it is would it?
4:14 the sound it made was amazing, almost sounded like a mini helicopter
technically is a helicopter!
Tom, years ago when when I was pretty young. For my birthday I received a helicopter that worked on a similar inertia principal. The one difference was that using a pull string launcher the blades were designed to spin up flat. In the hub there were springs that were stretched as the revolutions increased. At launch you would aim the helicopter at maybe a 30 degree angle so that it would fly away from the launcher and travel possibly 150-180 feet or so And then return like a boomerang and land at your feet. As the blades started to slow, the stretched springs would begin to relax plulling the blades into more pitch in order to keep the helicopter flying. A really cool toy. Too bad I couldn't have purchased one to put away until I was older.
I have searched far and wide but no one makes it anymore.
Gotta go, my dog is bugging me for lunch. Cheers.
At full RPM that sounded terrifying. I love it!
This happened whilst flying my quadcopter once. It did not end well.
F
Micah van Everdingen couldn’t agree more
Wait what does F mean?
@@sparksycat F in chat is a meme that means condolences. In Call of Duty (Story) you press F after someone died. And a meme was born
Press f to pay respects :)
4:16 reminds me of that flying vehicle in the incredibles. The one that the bad guys in white suits used while chasing in the jungle. Someone help me out here
Yes cool
Yes cool 2
Yes cool 3
Yes cool 4
Yes cool 5 (yesss Ik what you’re talking about)
That camera work at 2:35! 🤘
YOOOOOO JUNKYARD DIGS
couldn't agree more. _100%_ spot on.
5:12 "A slightly more powerful, more dangerous children toy" I like how this is basically the description of every man's toy.
4:57 how catoon charaters start running...
Weeeee
_what_
*MENTAL GLITCHY GAGS*
@@ramslade
_🤔_ 🤔
GOTTA GO FAST GOTTA GO FASTER
I'd still like to see a variant of this with the outer ring edge-on to the airflow instead of flat-on as you machined it out.
Trouble with this is, it tends to quickly tilt over and do a dive
Another fun video, thanks! You had a slide about rotational energy. Another thing to consider when designing propeller driven stuff is that all other things being held constant, a prop's power goes up by RPM cubed (HP2 = HP1 (RM2^3/RM1^3). If you hold RPM constant, power goes up by diameter (D) to the fifth power (HP2 = HP1 (D2^5/D1^5)). Keep on experimenting!
4:15
It sounds like a helicopter!
no
yes
It sounds nothing like a helicopter.
I think more like a landing cessna
More like a softcore airplane
4:12 reminds me of the "Velocipods" from The Incredibles
You build such cool stuff! And plus, I learned about that self-launching "gear" mechanism. I was always curious about that.
I've always wondered what the limits were with this concept. I think you've shown that with an outer ring-wing you could achieve some considerable distance.
Tom: time for some destruction
*shoots it into leaves*
I imagine making the spinner's outer rim vertical instead of horizontal will quickly improve its aerodynamics.
Exactly what I thought as well!
Nice work Tom. In the sport of clay pigeon shooting, there is a very elite form of target, the “ helice” sometimes called “ ZZbird”. It is a spinning propellor not unlike your device here and launches in the same way. The launcher has a limited rotation powered base, and the whole machine is concealed behind a screen to the shooter has no idea of which direction it is going until it appears. The propellor has a friction fit ring on it, and if it is struck by pellets, the ring detaches and the shooter gets a point. Have a look at this, it might be interesting for you.
Those interlocking teeth are called an overruning clutch. they are often in starter motors. to keep the engine from spining the windings off the armature. after it starts.
Looks like you made the first successful flying saucer of the world, Tom... Congrats! 😬
Stay safe there! 🖖😊
Needs mass in the outer edge
This was my first thought also. Aluminum is great for CNC fabrication but not much for inertia.
@@old_guard2431 Look at the flywheel equation - speed matters more than mass.
@@waynerussell6401 we've maxed out the speed already though.
I think it would do well if it was turned it into a 'ducted' fan, but one where the outside spins too. Put some 'teeth' on the leading edge, and see what thickness of wood it can bore through from a distance.
I love how it comes down in a corkscrew. Very satisfying
I love how the vertical launch looks and sounds
The way you engage the flywheel projectile to the motor reminds me _exactly_ of the newer(?) beyblades.
Also at 4:00 I really thought that thing was going to just disappear into the horizon.
Same XD
4:11 looks almost like one of those racing drones!
Great video Tom Stanton!
Flywheels are most efficient when they have a large mass around the outer ring. You should try attaching some thick dense metal around the ring of the propeller. The best part about that is having it there won't increase friction, just inertia, so you can spin it up to just as high an rpm (though it will take longer to do) and it will maintain a high speed for longer.
I imagine the name for your lawn care company: “Tom Stanton’s Lawn Care, we use nerd technology to care for your lawn!”
Thanks to you I now know what to do with the 600 size heli motor I have laying around. This thing is going to be lethal.
Oh shit I really don't want to be near your house when you'll test it xD
don't try to hand launch it.
Gives me flashbacks of those ufo’s from the incredibles
It's not just me.
You can do something similar by locking the bearings on a bicycle wheel, and loosely attaching the axle to a power drill... when the wheel slips out from the drill, it goes incredibly fast, and it's funny to watch it jump a ramp.
4:13
It actually sounds like a helicopter.
technically is a helicopter!
I love watching these vids. That would be nice with lights on. So when it rotates in engages the lights and turns them on. Abit like them light up yo-yos . Stay safe bro👍🏽
I feel like we'll se an UFO sightings increase
(Also, I need to build one of these🤪)
Also they will find "mysterious" circles on the ground
I think part of the reason this doesn't fly so high is the geometry of that outer disk. You mentioned in the horizontal test that the plastic versions have that outer ring that acts as a bit of an airfoil; this same idea applies to the vertical test too. The plastic versions have the outer ring presenting a point towards the leading edge, while yours has a flat band presenting towards the leading edge. You should try 3d printing a sort of molding that screws against your outer ring to give it a more aerodynamic shape and revisit the vertical tests!
Alternative title: Man builds dangerously fast spinning flying lawn mower
What have we learned? Never hop Tom's fence, otherwise there's probably a spinning object in your Face🙃
It reminds me of these flying Discs in "The Incredibles"
Used to launch 12 inch model airplane propellers off a sewing machine motor using a variac. Actual propellers fly very well. Use a good anchor to keep from launching the motor too.
This channel is a treat. Thank you :)
Next time, just make a wheel, and se how far it goes along the ground!
And them add another wheel with a saddle to ride on
3:39 "*wow that's a lot of RPM*"
3:50 *_HOLY JESUS FREAKING CHRIST THAT IS FAST_*
Oh man! I was hoping you would put it on a glider in the end. Still fun stuff. Thanks for your time and energy :)
It would be nice to see something with some kind of mechanics(could be a servo or even a spring, but it might be hard to find the perfect strength) that can pull weight closer to the center, so if you can spin it up to some speed and launch, it can accelerate(with servos), or maintain its speed for longer(when using springs, and they start pulling the weight in as it starts slowing down).
Keep up the good work, love your videos
that something straight from the incredibles movie
That's exactly the thing I thought of as well.
4:15 the Incredibles, forest chase. Colorized.
I might be wrong ~ or you might be, but at 3:31 the smaller spinner moves in a straight line for two reasons. (1) The three aerofoils make an "airscrew" (which is basically a propeller) which pulls the body forward in atmosphere. (2) When a body spins in free space, it generates a force 90° from it's angle of spin (picture a line going through it's axis of rotation). This force developed is great enough to overcome anything that acts against it from other angles not on that straight line axis.
If you fired it parallel to the ground, acceleration due to gravity acts 90° off axis from it's axis of rotation and as long as the torque from it's rotation is high enough, it WILL NOT yield to gravity and pitch downwards until most of the rotational energy has been expended due to air friction. This same torque effect is used to stabilize satellites and is used in gyroscopic boat stabilizers.
4:16 love this sound! Sounds like a sci-fi drone or a tiny helicopter without turbine noise
Tom: *monotone* Wow that's high.
Me: *cringing* Don't hit the drone!
The noise is everything but how could one make it steerable? With that amount of travel horizontally couldn’t you try to steer it away from ground and start trading speed for altitude?
Problem is, it's basically one giant gyroscope. It would be quite tricky to make it change orientation
It spins too fast to put effective control surfaces on it. It would just cancel itself out constantly as it spins to the other side of the disk.
Nice design and work.
Another excellent video. Thank you.
3:50 this sound reminds me with the scream of the bear in "SCP containment breach"
You must have atleast 20 ticks after walking true that grass
No real dangerous ticks in the UK. Don't wear shorts walking through it though, you end up with legs cut to ribbons by the 'blades' of grass. I made that mistake as a child, and it hurt for hours.
No real dangerous ticks in the UK. Don't wear shorts walking through it though, you end up with legs cut to ribbons by the 'blades' of grass. I made that mistake as a child, and it hurt for hours.
I really enjoy your experiments
When you started describing the physics behind it all, I had to pull my pants back up. Subbed for some good content and was blown away.
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patreons man
we needed this, thanks
Regarding the semi-horizontal launches: The thing will eventually turn vertical due to rotor dynamics if it has sufficient launch altitude for this to happen before it hits the ground. As it begins to "slide" downward after lauch, advancing blades gain airspeed, while retreating blades lose airspeed. This causes the advancing blades to increase lift (and retreating ones to decrease). Due to precession, this causes the forward edge of the rotor to lift, causing it to transition to a vertical direction. This is the same thing that causes a boomerang to turn, and why they go upward and stall if you throw them sidearm.
At a young age of building things I was given a dremmel tool set. Did not take me long to put one of the toy rotors like that on the dremmel, wind up to high speed. Now I did understand centrifugal force so I never spun up to the full RPM, and i had to stop the chuck by hand cause I knew would destroy the chuck lock. But dam they launched very high, and I lost the rotor in a field. End of experiment. Lucky didn't explode in my face.
pretty cool i wanted to do that to last summer and here u are with an even extremer version :d
That was very enertaining! Thank you.
This is the kind of thing that will pull kids and adults away from their computers. Entertain and Educate...you can make a real difference here. This is way too fun. Don't ever stop!
I really want to make one of these now, super fun!
You need an angle the propellers down a little more. That way you would get maximum thrust it will go so much higher. Because as it stands the little toys are going higher than this thing.
This was amazing to watch! The large spinner, when it hopped the fence and just kept going, reminded me of those dual blade spinning drones the bad guys flew in the Incredibles movie! Maybe you could adapt the design to have one prop spin one way, and another prop geared to spin the opposite way, and have it self stabilise, but still launched off the single motor?
Either way, great video, and makes me want to go out and buy a spinner now 🙈
Back in the USSR, we had such toys with a manual starter and a plastic spinner, if you start it at home, then the spinner rested with a cone against the ceiling and spun there and then descended to the bottom :-)
I think like a first one is vertical corner to help it going to more hight but which you made you spinner has horizontal corner the horizontal corner has resist more air then the first one which have vertical corner ( means which spiner has vertical corner is going to hight )
Only way I can think of improving it is making it more similar to the plastic ones. The outer surface is probably slowing it down a bit, and like you mentioned in the video, with the smaller ones, the outside surface acted as a wing to a certain degree
When I was a kid, 60 years ago, I had a small version of this.
Even if I'd had access to smartphones, computers, etc - you wouldn't have got me to swap. It was the bee's knees. I played for hours on a summers day, though to be honest I spent more time looking for it than flying it.
I'd have killed for this big version.
Mind blowing stuff right there
I love the video. Greatly enjoyed it
Gives me memories from when I had one of these toys as a young child. It met it’s unfortunate end when it hit the ceiling too hard though
Try loading the blades in a very short tube, instead of in a flat ring ! You'll be amazed at the differences in flight characteristics ! It'll really go !
Also the blade tips will go supersonic so have a look at lynx helicopter blades and copy with pride.
A vertical tip ring like your smaller model will reduce tip vortex drag.
Commercially the great thing is it’s reusable! I’m thinking LED Firework display! Or a bird scarer etc!
A really cool sound !
man I just love your backyard
В моем советском детстве, помню такие игрушки. От вертолетов до подобного "спинера". Раскручиваешь на веревке, и GO! Только осторожно, спокойно пальцы могло оторвать
tom if you curve the rim out to make a deducted fan you receive much more lift as fast air passing over the sloped surface creates a lower pressure than the area underneath the curve
Pull string spinners are just beyblades that have attained heaven.
You shoud do this same project, but have another one counter-rotating to cancel out the yawing it would also effectively double the trust or kinda double the flight time.
great video, wish I had time to make stuff I have work then relaxing, if I were to make some of my projects it'd take a a week spread out across a decade
What would be cool is if the spinner had pitch control on the blades with some kind of locking mechanism, then it could be spun up to super high rpm before the blade pitch was changed, could go very high