Is it possible to spin the last gear? (1:65000 gear ratio)

[@dirt_dert_durt]

bro I just want one video where they go ham on the big gear and make the little gear go supersonic

[@alexandru7727]

The PLA or ABS or whatever plastic used won't be able to hold that much torque so it will break, I guess you can do that with steel gears

[@cate01a]

link please? would love to see some little thing rotating at literal mach speeds!

[@niggacockball7995]

we are gonna need a shit ton of torque

[@fishtail2616]

@@niggacockball7995 mount a ship engine to it. They should have some torque

[@shoobfloof22]

@@fishtail2616 or a train engine

[@kinangeagle133]

“I’ll use mass because it’s easier to visualize.” Proceeds to use ounces, which is the hardest unit to relate to for the rest of the world

[@3DPrinterAcademy]

hahah American / British units are.... interesting.... to say the least!

[@du42bz]

@@3DPrinterAcademy Just use normal/real units like grams

[@mfcamillus211]

The more confusing part is the 30 gram ounce he was using.

[@mahoganydoughnut6082]

USA!!! USA!!! USA!!! USA!!! USA!!! 🇺🇸 🇺🇸 🇺🇸 🇺🇸

[@DiabloDaSlaya]

@John Constantine I’m proud to be an American, where atleast I know I’m freeeeeeee

[@marriott7863]

torque seems like an added feature to stop easy energy exploits. smart of the devs to implement it!

[@Dennis19901]

Torque and RPM work proportional though. Torque does not in any way have anything to do with "energy exploits". If we assume that friction does not exist for a moment. If he would turn the last gear with some X torque, the output gear would turn with x / 65k torque. Albeit turning very fast, it has next to zero torque. That's also why heavy machinery doesn't go fast at all with massive amounts of wattage in their engines (a tank for example). It needs more torque and less rpm to be of any use.

[@droffilcc8800]

@@Dennis19901 r/woooooooosh

[@amb600cd0]

@@droffilcc8800 he's explaining that it's not exploit patching, but instead a very well thought out physics engine

[@droffilcc8800]

@@amb600cd0 ah, thanks for the clarification

[@honu2980]

@@droffilcc8800 the woosher has been wooshed

[@LilCheesyBean]

It would be amazing if you could just push the last gear as hard as you could and the first one flew off and sliced through the wall while the one you were pushing literally hasn’t moved

[@angelo9989]

Figuratively hasn't moved. It literally has moved. Just saying

[@LilCheesyBean]

@@angelo9989 I know, I just mean you can’t see that it’s moved because the distance would be so insignificant

[@angelo9989]

@@LilCheesyBean yeah I know, I was just being a dick 🤷🏻‍♂️

[@commanderhopeful]

@@angelo9989 lmao

[@fredfrancium]

The things is actually you can spin the last gear. But with very very low speed. It requires high power when you want to rotate it with same speed of the first gear. In theory you need same force for rotation the same one for last one

[@hedonisticzen]

It's also worth mentioning that if you could spin that final gear one rotation in a minute that your starting gear would be spinning 10-20 times faster that a power tool such as a drill.

[@josephamundson701]

I know he just said I can't do it, but something in my brain is still saying it should be easy

[@andrewwatts1997]

He didn't even do it properly. He sort of started off well by turnign the gears in the beginning but then just gave up or something.

[@pessinieminen4341]

@@andrewwatts1997 the gears would break because they would spin so fast

[@voxx9449]

@@pessinieminen4341 id rather see that then nothing at all boring ass video

[@wack3320]

@@voxx9449 it was probably boring because you are uneducated so hearing about mass and friction was “boring”

[@sgtjonmcc]

It would not be as the force required to rotate the last gear exceeds the maximum yield strength of the material the gear is made off. Meaning you would shear the teeth off the gear box before you could achieve any rotation.

[@victoriajenkins1424]

A version of this would be an excellent children’s toy! They’d love trying to spin the gears, watching the them spin, and trying to figure out how it works. There could be a marker on the final gear, so that you could see it move minutely by spinning the other gears.

[@therussiannukekid1784]

I imagine there would be too much risk of injury with things getting caught in the gears

[@gauthamarun3878]

@@therussiannukekid1784 Transparent box with levers attached maybe? This seems really fun

[@BC-hu6yq]

@@gauthamarun3878 that would be a good fix.

[@PaulMurrayCanberra]

All cool until the kids decide that it would be amusing to feed their little sister's hair into it.

[@AArrad]

@@gauthamarun3878 Levers on ever gear would still risk injury to toddlers as all levers could spin at high rates. Maybe a detachable lever to pick and choose which gear you want to spin?

[@StardustLegacyFighter]

One of these days he's going to have a crazy gear ratio, that will literally create a black hole, when he spins the first gear.

[@Santhippe]

I want to be there to see it

[@LARGO125]

There's a guy on KZbin who used Lego gears to create a googol:1 gear set.

[@lacroix1976]

i think you wanted to say the last gear , so the first gear will spin crazy fast for your blackhole ^^

[@arabianprince7508]

Plz help stop Israel (modern nazis) apartheid against Palestine, it's not your problem but your gov is funding them, spread the message cause their strongest weapon is misinformation. If we together boycotted them they will be forced to stop like South Africa

[@honaldjason]

@@arabianprince7508 dude get help, this is a normal comment section, go to another place

[@chrispham6599]

It's funny how this guy is trying to explain to us the physics of gears, and we're all just like "Ha ha! Gears go brrrr!"

[@Adam-qs5ir]

Durrrr spin, spin weeeeeee!

[@aidaubmeg459]

XD XD XD

[@scott215]

Dude spends the whole video explaining why he can't spin the last gear, top comments are all wanting him to spin the last gear.

[@arabianprince7508]

Plz help stop Israel (modern nazis) apartheid against Palestine, it's not your problem but your gov is funding them, spread the message cause their strongest weapon is misinformation. If we together boycotted them they will be forced to stop like South Africa

[@ABDULRAHMAN-sg1mx]

@@arabianprince7508 😂😂😂😂

[@definitelynotafederalagent]

I’m just saying, we get some titanium, we put a lever on the last gear and put it under a hydraulic press.

[@codyslayer6715]

That is the best bad idea I've heard in all day, I too like to live dangerously

[@arabianprince7508]

Plz help stop Israel (modern nazis) apartheid against Palestine, it's not your problem but your gov is funding them, spread the message cause their strongest weapon is misinformation. If we together boycotted them they will be forced to stop like South Africa

[@redram5150]

You’re not fooling anyone, Archimedes

[@phenixtechyt]

@@arabianprince7508 wait what

[@_Rame]

gear teeth probably won't survive, but I'm digging the idea

[@marten2857]

OK, but now I want to see you *attach a drill.*

[@vinceemery5943]

He just said he could pick up a truck with the last gear

[@deltahat880]

it would break first, possibly resulting in injury.

[@marten2857]

@@deltahat880 Probably not injury, but you have to agree that watching it break would be quite entertaining

[@johnjon4688]

@@marten2857 no more than breaking any other piece of plastic... the last wheel would just slip and snap of the teeth...

[@saphrosyn8040]

@@johnjon4688 wear some protection then

[@restorasenrisei9991]

Gotta love how he filmed it without having removed it from the build plate

[@128ajb_02_Music]

Stable base

[@lunaticfpv17]

@@128ajb_02_Music ehh debatable

[@Ruzzky_Bly4t]

@@lunaticfpv17 No. It's more stable than if he just places it on the surface. 100% true, no doubts, *FACTS*

[@lunaticfpv17]

@@Ruzzky_Bly4t it may be stuck, but it isn't all that stable

[@Ruzzky_Bly4t]

@@lunaticfpv17 "it may be stuck, but it isn't all that stable" Think about what you just wrote. It is *stuck* to the surface but isn't stable? Will you also try to debate that water is wet, or what?

[@drifter493]

There is no way the algorithm isn't picking this up.

[@theepicbruhman2254]

It did for me

[@MegaBraddaz]

it has for me :)

[@alexandru7727]

well, it did for me

[@SephectjaLeonhart]

can confirm!

[@thevenerabledoubleu1771]

It's happening

[@BravoTangoAviation]

I'm an engineer and I love experiments like these. I need to print those gears off and make my own. Great work! Thanks!

[@yankyeefan90123]

Had absolutely zero idea gears worked like this and honestly my life is changed

[@decago_1460]

Ratio

[@Geraldi-hj3pi]

for example u had 1:2 gear and 1:3 gear, u will get 1:6 ratio if combined

[@realryder2626]

Scientific engineering is a hell of a drug

[@SamsDesigns]

The fact that you ran this whole demonstration with the housing still fused to the build plate is brilliant. Good job my friend

[@arabianprince7508]

Plz help stop Israel (modern nazis) apartheid against Palestine, it's not your problem but your gov is funding them, spread the message cause their strongest weapon is misinformation. If we together boycotted them they will be forced to stop like South Africa

[@esolangsemerald6394]

@@arabianprince7508 this is a 3D printing video

[@sohail008007]

​@@arabianprince7508 go commet of a video that actually makes sense

[@matil7880]

"I just want to see you spin the last gear fast"

[@coldsoup1373]

This content is underrated

[@billybull7419]

35k people: "ummm" Edit: 130k

[@NicodemusT]

This is actually getting tired.

[@Foxjitas]

Have you seen the youtube shorts tab yet? This content is OVERRATED.

[@LassIV]

Literally just 2 days man...

[@nolanreach2088]

You meant to say undeveloped by view count.... But it's only a few days old... You ignorant sir Cold Soup. Nobody likes cold soup, unless it's a Ocrosshka!

[@spiderdorc1143]

Me: I should be asleep right more *Video pops up on my recommendation at 2 a.m. Me: I must know this information

[@jjcurry4452]

A way I like to think about it after designing a few gear trains is as, as speed increases torque decreases. The power of a gear train is constant. For those who don’t know a gear trains purpose is to modify speed, or force but inevitably is going to do both.

[@fr0237]

I can’t be the only one watching like “bet I can spin that” 😂

[@killertigergaming6762]

You aren't

[@logangraham2956]

i can spin the last gear rather easily, it would just take me a little time to get there. even if this gear box was double what it is. it would still be possible to spin the last gear.

[@sandasturner9529]

Same.

[@thebrokenmystic879]

I’ll attach my DD 16 engine. There’s no way it won’t spin.

[@bass2762]

it might be possible to spin the last gear if the gears dont break or deform from friction. my theory is that you start from one of the gears that is easy enough to spin but not too easy. then once you get up to speed, you move to another gear and you repeat.

[@i-seegaming8652]

Compressed air against the first gear seems something I would like to see

[@hbzandbergen]

It's caused by the rotation inertia of the gears. For each couple of gears it is multiplied by (reduction)^2, giving the last gear an enormous inertia

[@pauljs75]

Friction also factors in as well.

[@lilapela]

I think Its inertia in combination with friction. if there was no friction, I assume it would be possibe to spin the last gear but it would take a long time to accelerate

[@stickyfox]

@@lilapela Each stage multiplies the total torque (friction + inertia) by the gear ratio. When run in the "normal" direction, the gear ratio helps overcome both friction and inertia. If there was no friction at all, it would still require 65000 times as much torque; possibly more than the plastic gear can stand without breaking. But I'm likewise pretty sure that if you had all the time in the world and none of the friction, it would eventually get moving under otherwise reasonable conditions.

[@pawelkusmierek109]

Yes, inertia may be the biggest factor here. Also, it is worth noting that speeds multiply by the same factor. If the last gear was spun so that it's outside moves at mere 1 cm/s, the first gear's outside would move at 650 m/s, almost twice the speed of sound.

[@threedo1609]

I ain't no scientist but with a lever is it possible to turn the wheel

[@Emeraldog]

i’m actually surprised i found this video a few weeks ago before it blew up. congrats on being featured!

[@AndyMooreMusic]

I would love to see him start spinning the first gear, then move to the second, then third, and so on until the entire system is spinning from force applied to the final gear. It should be just like shifting gears in a vehicle's transmission, right?

[@roose1346]

In theory, yes, but I think the construction would start vibrating and fall apart. Also the resistance would still be multiplied trough the gears so you would still need a lot of force

[@AndyMooreMusic]

@@roose1346 Yes, I think as constructed, it would turn into multiple spinning, flying, gears of death and destruction lol, but I like theories. If the entire system was brought up to speed slowly, the inertia of the system should eventually be such that the motion of the final gear could be maintained with relatively little force. The only road block I see is the first gear would probably be close to the speed of light.

[@roose1346]

@@AndyMooreMusic ow jeah i didnt even think of that! Id love to try to get as fast as possible tho hahaha

[@hdddd3274]

@@AndyMooreMusic щщщщз и вдщщщзлшш в школу не могу до Михаил Александрович не могу сказать

[@arabianprince7508]

Plz help stop Israel (modern nazis) apartheid against Palestine, it's not your problem but your gov is funding them, spread the message cause their strongest weapon is misinformation. If we together boycotted them they will be forced to stop like South Africa

[@nicholasdowns3502]

Can we just take a moment to notice that he filmed the entire video on his 3D printer build plate

[@3DPrinterAcademy]

good enough bed adhesion to hold the gearbox in place, didnt need to clamp it down haha

[@coffeeandpie8181]

@@3DPrinterAcademy I’d be too afraid of putting that much pressure on it, did you have to relevel after?

[@3DPrinterAcademy]

@@coffeeandpie8181 hmm not sure, I usually check bed level at the start of every print, while the first layer is printing

[@brianfhunter]

@@3DPrinterAcademy - That is a thing i dont get it... i very rarely need to relevel my bed, using the same printer and i only print ABS with enclosure and ambient heating. Ambient temperature around 45ºC, bed 100ºC and nozzle 240ºC, to avoid any warp, its kinda of aggressive, but no problem yet.

[@3DPrinterAcademy]

@@brianfhunter I just make very minor adjustments, very quick (I never use a paper to level bed). 99% of the time its fine. Big knobs on Enders are super convenient

[@pipeqez911]

We need more of this it’s freaking awesome

[@Bwong55]

SCP-069

[@pipeqez911]

@@Bwong55 I do not particularly like 069 That’s why he’s in my belly

[@RipleySawzen]

2:44 "exponentially increases" Thank you for the proper use of the term 'exponentially'

[@TedBackus]

if youre interested in this, you should check out pulley's, & how they make lifting heavy things easier

[@thorpeychris]

Would love to see a 1:65000 gear ratio hooked up to a 65000:1, so that it would be 1:1 on either side.

[@Anon-i2z]

I may not have a brain But i have an idea..

[@ccricers]

When I was younger I actually tried to do this with Lego Technic gears but I couldn’t set them exactly right to go to ludicrous speed

[@XtreeM_FaiL]

You had no Schwartz?

[@fordprefect1587]

I did that too, but with a power drill. Some parts of it are likely still in orbit.

[@samspam1182]

@@XtreeM_FaiL I understood that reference!

[@ra_i_nbow]

@@XtreeM_FaiL Unfortunately, his schwartz got twisted. Hate it when that happens...

[@gsxerwhite]

I did it and I went plaid

[@HDgaming5]

Haven’t been able to buy my own 3D printer yet, but I bought this gearbox cause I’m a big fan of your videos and thought it would be a nice desk piece until I can build this kind of thing myself. Keep making awesome content!

[@3DPrinterAcademy]

The gearbox is on its way! Thanks for the support!

[@SylvieTheBagel]

I want to buy a printer... Do you think a 100 dollar printer would be good?

[@metro-v8]

Couldn't you send the files of to somewhere to be printed for you

[@xmo552]

@@3DPrinterAcademy How long would it take to get the last gear to rotate once?

[@avananana]

@@xmo552 ~18 hours and 12 minutes roughly if you spin the first gear once per second. I think I did the maths correct, probably not since I'm me but can always hope.

[@DIMM4_]

A ton of people make this huge gear ratio thing and when people say, "spin the last gear" they just say "I can't." You are the first one that actually gave me an understandable explanation as to why.

[@kezcrider6694]

I love when I get to see these kinds of videos in my recommendations

[@lanceyourlot]

You explained this really well to us laymen. Thank you!

[@TheNeoCubest]

Amazing video!

[@carterlantz8852]

I love you’re build guides!

[@zentoxe3608]

you're here?

[@NoCake]

I used to watch your tutorial videos for underground bases a long time ago. Kinda cool to find you randomly. I think one of the last videos of yours I saw was you talking about how you collect watches? How's that going?

[@noxtempest5649]

Oh hello

[@lucid_god]

KZbin featured you in an ad

[@avananana]

Dude just hit gold when it comes to being picked up by the algorithm

[@therealnoofle5330]

If it took 1N-M to turn the first gear, and you wanted to use a really long crank and your own weight to turn the last gear. If you weigh 150 lbs. you'd need an at least 97.5 meter-long (massless) crank which is about the length of a football field

[@cate01a]

haha, classic americanisms: describing length as football fields (just poking fun. not meant to be rude :) )

[@DigitalOsmosis]

I think your math is good, but he's talking about applying 30 grams (~0.3N) to the inner gear that has maybe a diameter of 15 cm (0.15m), leading to only needing 0.045 N-M of input torque. You still need about a 4.5 meter long crank to back drive it which is silly for a 3D printed gear box, but not quite football field silly :D

[@therealnoofle5330]

@@DigitalOsmosis Yeah, I figured 1Nm of torque wasn't the minimum required to turn the first wheel, but I went with the assumption anyways because it still shows how impressive the gear ratio is 😗

[@oracle8048]

so usain bolt could get the last gear spinning in 9.58 sec?

[@Smoshylife]

@@cate01a football is the biggest sport in the world

[@alexeatonexploresamerica5511]

That would be a good concept for a hight torque TRANSMISSION

[@kllafothaskrilla]

You signed it on my birthday. May the 4th be with us

[@ugudbro_xd]

This was actually really fun to watch

[@ashleylycan9335]

This is awesome. This also debunks a project i wanted to work on when i was a kid. i wanted to use a gearbox like that (probably with even more gears) conected to a pneumatic piston engine to run a generator and a air pump to keep the engine going and generate electricity. 8 year old me was definitely more creative than me now lol.

[@flaplaya]

Everyone who had Lego Mech as a kid definitely is passing by for these videos. I always tried to make induction gear boxes. Melted through blocks a few times:)

[@fordprefect1587]

I used gears and a power drill to send to first LEGO brick to space.

[@maps5299]

@@fordprefect1587 don't tell anyone. Over-unity is possible with gravity, gears and legos.

[@krisztianszuromi3484]

Wow that was very helpful now I understand how gear ratio actual work 👍

[@JustARandomYeListener]

idea:find the gearbox with the biggest ratio you have ever made then spin it from the last gear and see how fast the first gear spins

[@mityab20]

I love how everything in this video is in 4s even the time

[@metro-v8]

Wait what do you mean

[@metro-v8]

@Aaditya Yanamandra (ay4488) no it's 4:01

[@principal_optimism]

What if you spin the first one, then when its momentum increases, you begin spinning the next one, and as the energy in the system continues to increase, you keep going up to the last gear? It seems to me like this would make things a lot easier.

[@patrickchou9159]

dude's print adhesion so good he can do it on his print bed

[@lunaticfpv17]

Umm... is yours NOT like that?

[@patrickchou9159]

@@lunaticfpv17 not realy like after 3 min i can flick my parts off

[@lilhotdog7011]

I really liked this video. Very well presented.

[@n4tefish970]

I’ve seen one of these where in order to rotate the final gear once it would take more than all the energy in the universe

[@Bwong55]

1:23 Microsoft usb device disconnected sound enters the background music.

[@dwdadevil]

Part of the music

[@Bwong55]

@@dwdadevil i know, im not stupid.

[@zzamzza]

This is the type of video when I realize that I am too stupid, at least I accept it. Great video btw

[@Zeuat]

As I saw a comment from a guy on another video like this one: "My disappointment is immeasurable, and my day is ruined"

[@iulian_98]

Thank you from the bottom of my heart and the 3D printer is extremely helpful. I understand .

[@lavaismyname]

Here is a solution start by moving each gear slowly and greatly move to the second gear each time making it easier for you.

[@izzrunning]

if the last gear spins very fast manually, the red gear’s going to spin more than hyperspeed, creating a space vortex

[@DarkSerris]

And maybe by shaping the first gear like a fan blade, you could create tornadoes ! 🌪🌪🌪🌪

[@xenasBS]

I think it's more likely the mechanism would break

[@CoolDudeClem]

I might be able to get up hills on my bike with this!

[@brag0001]

Or not, by the time your wheel actually spins enough to get up there, you will have slid down again or died of old age 🤣

[@jakelake8113]

Would it be practical to jumpstart the last gear (or multiple gears) with a pull rope so that the resistance isn't so great? Btw I love your videos and you are amazing with breaking this all down!!!

[@c3kile]

not really, without eletronics or a car

[@143Support]

I hate you for having such an amazing signature. Subscribed

[@ethannorton564]

If you spin up each gear individually moving up when it becomes easier you can spin the last one and make the first one go over 65,000 rpm

[@dwayne1859]

This deserves a 24/7 live stream

[@sky173]

Great video... I'm still waiting for someone to actually try to lift a truck with a gearbox like this, lol

[@Dennis19901]

These exist already. Google "Hand chain hoists". It's a simple mechanism that allows you to lift, for instance ~4.500 kg (or 10.000 lbs) just by pulling a chain.

[@sky173]

@@Dennis19901 Understood. I have 4 hoists of my own. I meant a plastic 3D printed model. lol

[@Dennis19901]

@@sky173 Well, in that case. There's video's floating about on KZbin of someone making hoist-like contraptions from Lego. It can lift quite a lot (given that it's Lego), but nothing even near 50kg's

[@aurilio5633]

What if like, the first gear is made out of steel to handle the force, then you attach a wrench or whatever to give leverage and you put that under a hydraulic press? The last gear would go nuts!!

[@peppermintgal4302]

At a certain amount of force, something will bend, break, or otherwise deform sooner than get that last gear spinning. In this case, I'd bet on the wrench bending or the housing for the gears deforming until a couple of the gears come uncoupled. After all, even steel can only handle so much force.

[@JudaLadiye]

No idea what he's talking about but its very interesting to watch😁

[@AllenandLorie7733]

Imma gonna need a video of all those gears spinning before I can ever sleep again...........ever.

[@SamSamuylik]

Ok I'm printing it at the moment, but 1 gear has taken 5 hours. I need 9 of them plus the base. Then just cut down some metal rod. So in about a week I will have my very own in ABS🙃

[@3DPrinterAcademy]

Very cool! To get faster prints I use: 0.8mm nozzles, and print at 0.32 layer height, and 70mm/s, (100% infill for these is fine because everything is thin) you can get a decent gear in 1 hour. For the base I use a 1mm nozzle

[@tselios16]

i'm also printing them right now. One gear takes 1.30 hours. 0.4 nozzle, 0.2 layer height, 20% gyroid infill, 3 walls, outer wall 25mm/s, infill 55mm/s, inner wall 45mm/s

[@TheStripeTailedFiend]

🤓 technically you are rotating the last gear, it’s just rotating at an imperceptibly slow speed 🤓

[@FAQ_SiLV]

Last gear is underrated

[@robertmcknightmusic]

"Here's an ounce of silver to help you visualize..." Not what I think of when I use the word ounce, but sure.

[@tuneboyz5634]

Cronchy gear njum njum nom 😋, crispy cronchy🥴 gear crisp crisp 🤤 Delicious 😐

[@robertmcknightmusic]

@@tuneboyz5634 *hits joint* good point

[@Evolved_Skeptic]

Always fascinating to see how different forms of energy work.

[@alphamuplays1669]

Man i miss my 3d printer. It broke down right before i moved and i didnt have space for it at the new place. Whenever i see one of these types of videos it reminds me all the cool stuff you can make with one

[@vsus42]

I wonder if we could reach the speed of light with a gear ratio much bigger than this

[@andy0x48]

If you were to hypothetically spin the last gear to complete one revolution, it would cause the first gear to spin at roughly 3.9 million RPM

[@Kington99]

surely you'd have to define how quickly you spun the last gear?

[@RedHair651]

@@Kington99 you would indeed

[@nathanielbean3119]

Probably 1 revolution per second I guess?

[@aukustihaho8284]

@@Kington99 no, it does not matter as a speed was no defined, just a number of revolutions

[@chri-k]

@@nathanielbean3119; exactly; 1 RPS = 60 RPM; 60RPM * 65000 = 3.9M RPM That would require quite a bit of force.

[@kitkat4189]

you: *busts out an ounce of silver* me: at first you had my attention, but now you have my interest

[@shreeeewd6785]

the algorithm has smiled on this channel

[@ant_mk3596]

This is cool, can you try using an air gun or something along those lines to try and turn the final gear and get some high speed cameras to record how fast the first gear is spinning?

[@spacecupcake4779]

Can you do a gearbox like this but with another section that goes back down to 0 so basically 1:1 but on hard mode

[@ArchangelExile]

I know that it would've had no effect and it would've been a waste of time but you barely even tried to interact with the last gear. That is messing with my OCD.

[@matthijsvanemous7046]

Imagine the speed of the first one if you spinned the last with 1 rep per second

[@willoverman2093]

Doing some quick and dirty math, assuming the gears are 6" in diameter, if the last gear were moved at 1 revolution per second, the outer rim of the first gear would be going a little over 70,000mph.

[@daniellclary]

I made something like that with my Knex set. Its not that powerful, but in essence, it does the same thing.

[@TheoneandonlyGrumble]

I keep getting recommended these kinds of videos

[@muhammadjidan8280]

0:13 what is the name of the tool?

[@maximvelkomozny8775]

3d printer?

[@jeheysiii]

@@maximvelkomozny8775i think hes talking about the brand

[@alexabadi7458]

A guy told me one day "give me a lever long enough and I will move the world", a gave him a very long lever and he never came back.

[@baca360]

He’s busy moving the world. Haven’t you noticed that we have day and night now? That’s the guy....

[@kishans9894]

Damn nice explanation..

[@Alberta1stPodcast]

i'd totally buy one to put on my desk, this should be merchandise "65,000:1 Gear Ratio Classic Desk De-stressor"

[@OrbInDaFrame]

I just like seeing Gear contraptions like these, turn It's oddly satisfying and calming

[@ismahelo]

When the last gear completes 10¹⁰⁰ spins, this channel will upload a boring video

[@luizquevedo6580]

Or will it?

[@alphazetavr1888]

A googol amount of spins, KZbin is owned by google. coincidence I think not

[@VM-cw3iv]

Great video!!!

[@FalloutUrMum]

What blows my mind is that it doesn't just work the same way in reverse

[@bradolson8022]

TL;DR The front generates more force because it's a bigger gear, the back starts with a smaller gear so it generates less force. Full Explanation: Trust me, I was going through the same motions when I started to think about it. I had to watch the video a couple times and do a little research to refresh myself, (I'll drop the link at the bottom). Why doesn't it work in reverse? Why aren't the gears just all moving at the same speed if they're locked (I mean they literally have to!)? Does it work rotating clockwise and counterclockwise? Etc. Etc. Finally I think I figured it out. The trick is in all these parts being linked big gear to small gear. Big gears produce large amounts of torque (force) at the cost of slow speed, and small gears produce large amounts of speed at the cost of low torque (force). So think of each big gear to small gear point as a currency exchange, force into speed, speed into force. The only issue is that doing this over and over is going to water down what you started with because, again BIG gears are for TORQUE and SMALL gears are for SPEED. At each point you're essentially having each gear produce what it sucks at the most. In this set up the small gears are pushing torque and big gears pushing speed. It's bound to run out at some point. This is exactly why it's so much more difficult in reverse. You're trying to start the system with high speed low torque whereas it's much easier to start with high torque low speed, (look at the gear arrangement in the front vs. back). None of this would be an issue if all the gears were the same size, they'd all move synchronously. So what's the point then? Why build such an energy loss of an item? Let's circle back to both our question "why doesn't it work in reverse?". It does. WE'RE just LOOKING AT IT REVERSED. We use mechanics like this all the time, like in bicycles. The whole point though is for the force to be applied on that 'last gear', and having your working gear be that 'first one', so that in one rotation you've made 4 or in this case 65,000. These DO WORK in reverse, that's their design, the video is what's in reverse. www.princeton.edu/~timeteam/gears.html

[@vistakay]

@@bradolson8022 Was a pleasure reading that

[@mjcanuel2359]

idk why but i learn more by watching random vids like this hope to learn more my dud

[@todayonthebench]

A fun thing with the friction is that the force doesn't increase with 65536x by the time we reach the last gear. That would require all intermediate gears to be frictionless, something they aren't. If we assume that all gears have equal friction losses. Then our first gear needs a torque of 1 to move. Our second needs to apply 4x that torque + 1 for its own resistance. And our third gear needs 4x(4x(1)+1)+1 to move, and so forth. This results in our last gear needing: 4x(4x(4x(4x(4x(4x(4x(4x(1)+1)+1)+1)+1)+1)+1)+1)+1 to move, or only 87381 times the force. The net increase will steadily approach (1/y+1)x(y^(z-1)) as we add more gears. (z being the number of gears, and y being the gear ratio.) But realistically friction losses aren't static, both axel and tooth pressure as well as surface speed ("RPM") and material does affect the resulting friction losses.

[@akeenengineeringmind]

"Is it possible?" proves there is such a thing as a stupid question, or at least, a stupidly worded question. Of course it is possible. Barring any errors in construction, it's absolutely not IMpossible. It happens almost immediately. It happens as soon as all teeth are engaged.

[@GIRGHGH]

Could you maybe go down the line spinning each faster and faster so the next one is easier to start? Sort of using momentum in the place of weight as your force?

[@EaglePicking]

65536 ... oldskool programmers be like: "I know that number".

[@mr.k5550]

2^16

[@job38four10]

I didn't learn anything but still found this 32 speed transmission video interesting....

[@asecamp]

Interesting concept. I subscribed.

[@apoorwadhammadewa]

Nice!

[@ballinbellow]

“Watch me not try anything at all to spin the last gear”

[@thenonexistinghero]

Biggest dissapointment, really. He keeps saying it's impossible, but he doesn't even give it a decent try.

[@kaanyeter4798]

You still haven't attached a drill to the last gear you could rotate via your fingers😔🥴

[@Eluvyel]

He literally just spent an entire video explaining to you why that's not possible.

[@ameliabuns4058]

Lubrication is insanely important specially if you don't use bearings or proper bushings for the shaft

[@1casper234]

Could you: if you spin one, use that rotation to eleviate some force and use the momentum to make the second one spin and so on until u can spin the last one?

[@shahrukhahmed484]

If you are talking about the last one, he physically can't, the force required to move last the one manually is greater than the strength of the plastic used in the gearbox and the gear would break before the last one can even nudge.