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
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
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.
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.
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
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.
@@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?
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
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
@@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?
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.
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
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.
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.
@@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.
@@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
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?
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
@@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.
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
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.
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!
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
@@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.
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.
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!
@@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.
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.
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?
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🙃
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
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.
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.
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
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
@@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 😗
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.
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:)
You can watch 30 seconds of this and get the idea. "Can you spin the last gear? No you can't pla will break. This is a vast oversimplification". Great video regardless
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!!!
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 Well, in that case. There's video's floating about on CZcams 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
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!!
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.
How long would that take? Let's do some quick maths. If he spun the first gear with a cordless drill, which typically gets 800 rpm, it would take just under 82 minutes for the last gear to make one full revolution.
I wish i could have gotten that because i would have made a video spinning the little one until the big one moved one or more rotations. I don’t have a 3d printer thou
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.
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?
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.
bro I just want one video where they go ham on the big gear and make the little gear go supersonic
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
link please? would love to see some little thing rotating at literal mach speeds!
we are gonna need a shit ton of torque
@@niggacockball7995 mount a ship engine to it. They should have some torque
@@fishtail2616 or a train engine
“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
hahah American / British units are.... interesting.... to say the least!
@@3DPrinterAcademy Just use normal/real units like grams
The more confusing part is the 30 gram ounce he was using.
USA!!! USA!!! USA!!! USA!!! USA!!! 🇺🇸 🇺🇸 🇺🇸 🇺🇸
@John Constantine I’m proud to be an American, where atleast I know I’m freeeeeeee
OK, but now I want to see you *attach a drill.*
He just said he could pick up a truck with the last gear
it would break first, possibly resulting in injury.
@@deltahat880 Probably not injury, but you have to agree that watching it break would be quite entertaining
@@marten2857 no more than breaking any other piece of plastic... the last wheel would just slip and snap of the teeth...
@@johnjon4688 wear some protection then
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
Figuratively hasn't moved. It literally has moved. Just saying
@@angelo9989 I know, I just mean you can’t see that it’s moved because the distance would be so insignificant
@@LilCheesyBean yeah I know, I was just being a dick 🤷🏻♂️
@@angelo9989 lmao
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
torque seems like an added feature to stop easy energy exploits. smart of the devs to implement it!
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.
@@Dennis19901 r/woooooooosh
@@droffilcc8800 he's explaining that it's not exploit patching, but instead a very well thought out physics engine
@@amb600cd0 ah, thanks for the clarification
@@droffilcc8800 the woosher has been wooshed
I know he just said I can't do it, but something in my brain is still saying it should be easy
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.
@@andrewwatts1997 the gears would break because they would spin so fast
@@pessinieminen4341 id rather see that then nothing at all boring ass video
@@voxx9449 it was probably boring because you are uneducated so hearing about mass and friction was “boring”
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.
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!"
Durrrr spin, spin weeeeeee!
XD XD XD
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.
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
@@arabianprince7508 😂😂😂😂
Had absolutely zero idea gears worked like this and honestly my life is changed
Ratio
for example u had 1:2 gear and 1:3 gear, u will get 1:6 ratio if combined
Scientific engineering is a hell of a drug
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.
I imagine there would be too much risk of injury with things getting caught in the gears
@@therussiannukekid1784 Transparent box with levers attached maybe? This seems really fun
@@gauthamarun3878 that would be a good fix.
All cool until the kids decide that it would be amusing to feed their little sister's hair into it.
@@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?
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.
I want to be there to see it
There's a guy on CZcams who used Lego gears to create a googol:1 gear set.
i think you wanted to say the last gear , so the first gear will spin crazy fast for your blackhole ^^
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
@@arabianprince7508 dude get help, this is a normal comment section, go to another place
I’m just saying, we get some titanium, we put a lever on the last gear and put it under a hydraulic press.
That is the best bad idea I've heard in all day, I too like to live dangerously
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
You’re not fooling anyone, Archimedes
@@arabianprince7508 wait what
gear teeth probably won't survive, but I'm digging the idea
I'm an engineer and I love experiments like these. I need to print those gears off and make my own. Great work! Thanks!
Gotta love how he filmed it without having removed it from the build plate
Stable base
@@128ajb_02_Music ehh debatable
@@lunaticfpv17 No. It's more stable than if he just places it on the surface. 100% true, no doubts, *FACTS*
@@Ruzzky_Bly4t it may be stuck, but it isn't all that stable
@@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?
There is no way the algorithm isn't picking this up.
It did for me
it has for me :)
well, it did for me
can confirm!
It's happening
Me: I should be asleep right more
*Video pops up on my recommendation at 2 a.m.
Me: I must know this information
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.
The fact that you ran this whole demonstration with the housing still fused to the build plate is brilliant.
Good job my friend
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
@@arabianprince7508 this is a 3D printing video
I can’t be the only one watching like “bet I can spin that” 😂
You aren't
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.
Same.
I’ll attach my DD 16 engine. There’s no way it won’t spin.
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.
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.
🤓 technically you are rotating the last gear, it’s just rotating at an imperceptibly slow speed 🤓
"I just want to see you spin the last gear fast"
Can we just take a moment to notice that he filmed the entire video on his 3D printer build plate
good enough bed adhesion to hold the gearbox in place, didnt need to clamp it down haha
@@3DPrinterAcademy I’d be too afraid of putting that much pressure on it, did you have to relevel after?
@@coffeeandpie8181 hmm not sure, I usually check bed level at the start of every print, while the first layer is printing
@@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.
@@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
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?
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
@@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.
@@AndyMooreMusic ow jeah i didnt even think of that! Id love to try to get as fast as possible tho hahaha
@@AndyMooreMusic щщщщз и вдщщщзлшш в школу не могу до Михаил Александрович не могу сказать
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
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.
This content is underrated
35k people: "ummm"
Edit: 130k
This is actually getting tired.
Have you seen the youtube shorts tab yet? This content is OVERRATED.
Literally just 2 days man...
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!
2:44 "exponentially increases"
Thank you for the proper use of the term 'exponentially'
if youre interested in this, you should check out pulley's, & how they make lifting heavy things easier
i’m actually surprised i found this video a few weeks ago before it blew up. congrats on being featured!
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
Friction also factors in as well.
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
@@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.
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.
I ain't no scientist but with a lever is it possible to turn the wheel
Compressed air against the first gear seems something I would like to see
I love when I get to see these kinds of videos in my recommendations
you: *busts out an ounce of silver*
me: at first you had my attention, but now you have my interest
We need more of this it’s freaking awesome
SCP-069
@@Bwong55 I do not particularly like 069
That’s why he’s in my belly
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!
The gearbox is on its way! Thanks for the support!
I want to buy a printer... Do you think a 100 dollar printer would be good?
Couldn't you send the files of to somewhere to be printed for you
@@3DPrinterAcademy
How long would it take to get the last gear to rotate once?
@@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.
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
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.
Amazing video!
I love you’re build guides!
you're here?
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?
Oh hello
CZcams featured you in an ad
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
You had no Schwartz?
I did that too, but with a power drill. Some parts of it are likely still in orbit.
@@XtreeM_FaiL I understood that reference!
@@XtreeM_FaiL Unfortunately, his schwartz got twisted. Hate it when that happens...
I did it and I went plaid
You could've put 65536 but instead you put 65000 in the title :(
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🙃
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
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
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.
Dude just hit gold when it comes to being picked up by the algorithm
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.
He’s busy moving the world. Haven’t you noticed that we have day and night now? That’s the guy....
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
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.
This was actually really fun to watch
You signed it on my birthday. May the 4th be with us
1:18 inepossible??
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
haha, classic americanisms: describing length as football fields
(just poking fun. not meant to be rude :) )
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
@@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 😗
so usain bolt could get the last gear spinning in 9.58 sec?
@@cate01a football is the biggest sport in the world
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.
You explained this really well to us laymen. Thank you!
I just like seeing Gear contraptions like these, turn
It's oddly satisfying and calming
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:)
I used gears and a power drill to send to first LEGO brick to space.
@@fordprefect1587 don't tell anyone.
Over-unity is possible with gravity, gears and legos.
I love how everything in this video is in 4s even the time
Wait what do you mean
@Aaditya Yanamandra (ay4488) no it's 4:01
You can watch 30 seconds of this and get the idea. "Can you spin the last gear? No you can't pla will break. This is a vast oversimplification". Great video regardless
i'd totally buy one to put on my desk, this should be merchandise "65,000:1 Gear Ratio Classic Desk De-stressor"
1:23 Microsoft usb device disconnected sound enters the background music.
Part of the music
@@andricode i know, im not stupid.
dude's print adhesion so good he can do it on his print bed
Umm... is yours NOT like that?
@@lunaticfpv17 not realy like after 3 min i can flick my parts off
I wonder if we could reach the speed of light with a gear ratio much bigger than this
"Here's an ounce of silver to help you visualize..." Not what I think of when I use the word ounce, but sure.
Cronchy gear njum njum nom 😋, crispy cronchy🥴 gear crisp crisp 🤤
Delicious 😐
@@tuneboyz5634 *hits joint* good point
As I saw a comment from a guy on another video like this one: "My disappointment is immeasurable, and my day is ruined"
This is the type of video when I realize that I am too stupid, at least I accept it. Great video btw
65536 ... oldskool programmers be like: "I know that number".
2^16
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!!!
not really, without eletronics or a car
Great video... I'm still waiting for someone to actually try to lift a truck with a gearbox like this, lol
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.
@@Dennis19901 Understood. I have 4 hoists of my own. I meant a plastic 3D printed model. lol
@@sky173 Well, in that case.
There's video's floating about on CZcams 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
Alternative title: Are you worthy enough to spin the last gear ?
The science behind gears is way crazier than I thought
This deserves a 24/7 live stream
I might be able to get up hills on my bike with this!
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 🤣
0:32 9*
Here is a solution start by moving each gear slowly and greatly move to the second gear each time making it easier for you.
if the last gear spins very fast manually, the red gear’s going to spin more than hyperspeed, creating a space vortex
And maybe by shaping the first gear like a fan blade, you could create tornadoes ! 🌪🌪🌪🌪
I think it's more likely the mechanism would break
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
surely you'd have to define how quickly you spun the last gear?
@@Kington99 you would indeed
Probably 1 revolution per second I guess?
@@Kington99 no, it does not matter as a speed was no defined, just a number of revolutions
@@nathanielbean3119;
exactly;
1 RPS = 60 RPM;
60RPM * 65000 = 3.9M RPM
That would require quite a bit of force.
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
I didn't learn anything but still found this 32 speed transmission video interesting....
I love how he did the while video with the base attached to the printer bed
When the last gear completes 10¹⁰⁰ spins, this channel will upload a boring video
Or will it?
A googol amount of spins, CZcams is owned by google. coincidence I think not
Wow that was very helpful now I understand how gear ratio actual work 👍
Imma gonna need a video of all those gears spinning before I can ever sleep again...........ever.
"Spinning the last gear would break the gearbox" do it. break the gearbox
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!!
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.
@@peppermintgal4302 it can handle the weight of a truck
I know nothing about this but I find it interest idk why
I keep getting recommended these kinds of videos
“Watch me not try anything at all to spin the last gear”
Biggest dissapointment, really. He keeps saying it's impossible, but he doesn't even give it a decent try.
so now do a timelapse of spinning the gears until the last one does a full rotation :D
How long would that take? Let's do some quick maths.
If he spun the first gear with a cordless drill, which typically gets 800 rpm, it would take just under 82 minutes for the last gear to make one full revolution.
@@SirPhysics that’s doable
Thanks for them thar mathifications
Thanks for my engineering final project
I wish i could have gotten that because i would have made a video spinning the little one until the big one moved one or more rotations. I don’t have a 3d printer thou
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
Nice!
This channel is gonna boom
Hold my beer...
Activate secret weapon
wow
Wow, this is really cool
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.
Always fascinating to see how different forms of energy work.
Damn nice explanation..
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?
the algorithm has smiled on this channel
YO HE BE FLEXING HIS SVILVER BE LIKE LOL 2:17
Imagine the speed of the first one if you spinned the last with 1 rep per second
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.