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Toothless Gears Make Much More Torque Than Conventional Ones, Here's How. Cycloid Drive Explained
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- Published on Mar 11, 2026
- Bambu Lab US: tidd.ly/46hpDEj
Bambu Lab EU: tidd.ly/460tBRZ
This is a cycloidal drive, one of the most torque-dense gearboxes in existence. The one you see in the video is a simplified, very humble and small fully 3d printed cycloidal drive, but even in this form this extremely compact little unit has an 8:1 gear ratio.
The orange eccentric shaft is our input and the blue load plate is our output.
As you can see 8 rotations of the input give us 1 rotation of the output. An 8:1 gear ratio. Even a planetary gearset struggles to achieve such a gear ratio in so little space.
8:1 is actually pretty conservative by cycloidal drive stamdards with gear ratios of anywhere between 30:1 to 100:1 or even higher in some cases being common in cycloidal drives.
But before I show you what a cycloidal drive can do and why it’s the go to gearbox for the most capable robots out there, I’d like to tell you about my progress in the world of 3d printing. I got into 3d printing 6 months ago with my Bambulab H2D, which has also printed all the stuff for today’s video.
But cycloidal drives aren’t just about maximum torque increases in minimal packages. For something to be a torque god, it must be capable not just of increasing torque but also of surviving massive torque inputs, and this is another area where cycloidal drives make regular gears look like a joke.
If you observe gears meshing, you will notice that all the torque is usually transferred through just one or two teeth. This is why gears must be wide if they want to handle significant torque. Wider gears of course result in a larger and heavier gearbox. But when they’re thick, conventional gears can be easily destroyed by shock loads, or a sudden application of high amounts of torque. A nice example of this are tuned engines with aggressive torque curves, you can have the same peak torque and horsepower in two engines, but the one with the more aggressively rising torque curve will blow a transmission whereas the other one will not.
Electric motors are the definition of shock loads since they can output their peak torque pretty much instantly. The motors from your average EV would easily destroy the transmission of an equally powerful combustion vehicle.
But they would definitely do nothing against a cycloidal drive. In fact many cycloidal drives are operated by some very brutal electrical motors and yet they complete thousands of trouble free service hour
And that’s because there’s no teeth to break, no gears to strip. But it’s not just the toothless anatomy, it’s the fact that all the lobes of all the cycloids are in constant rolling contact with all the lobes or rollers of the housing. If we have 2 cycloids that’s 16 points of rolling contact. The pins and the ccycloidal gears again just rolling contact, there’s nothing to break.
But cycloidal drives aren’t just more compact and stronger than conventional gearboxes, they’re also more accurate. Traditional gears need a relatively large amount of backlash to prevent them from binding and to ensure proper lubrication; it is this backlash that creates rotational play at the output and input shafts. And it usually gets worse the more gears you have in a transmission.
But in a cycloidal drive we have constant rolling contact at a very large number of contact points, the result is that cycloidal drives typically have virtually zero backlash which means that robots equipped with them are capable of repeatably achieving incredible accuracy. Even a small 3d printed unit like this one with 0 bearings has surprisingly little backlash.
Ok so it’s the be all and end all of gearboxes? The best gearbox? Of course not, because there’s no such thing, impressive achievements in one field are always paid for with a compromise in another.
Yes, cycloidal drives are torque gods….but they are most certainly not speed gods. The one thing they suck at is high rpm operation. Why? Because of balance if you remember my ancient video on inline twin engines you may recall how none of these engines are actually perfectly balanced.
If we observe the gears from the side we can see that there’s an offset between the gears and thus an offset between the forces, this creates a rocking couple which is trying to spin the gears about the center. At low rpm the forces of this rocking couple are absolutely negligible and irrelevant but at as speed increases they become more and more noticeably leading to vibrations and exponentially increased transmission noise and wear.
And there you have it, the massive torque increase in minimal packages, together with shock load resistance and zero backlash make cycloidal absolutely perfect for robot arms and joints.
A special thank you to my patrons:
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Bambu Lab US: tidd.ly/46hpDEj
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so instead of 2, having 4 cyclodial gears together like inline 4 would the the best ?
@abhishekdas9006no three gears middle one twice the weight of the outer ones. It would then be perfectly equaled out.
Wohoo more plastics 🥳
Man you are flying on that bike!
Wear a helmet!
Hello, good afternoon. I'll get straight to the point. A few days ago, I was working on a personal project about a homemade combustion engine, and I was wondering if you could help me with it. I have limited resources in physics and chemistry, and I don't want to burn my house down. So, if you're interested, we can talk privately. If not, thank you very much for reading.
Dude who invented the wheel: (rotates wheel once) -"Guys, this is a revolution."
Ouch
(respectfully)
So simple, it's almost illegal 😂😂
😅
You win the internet today 🎉😂🎉
My forefathers, “ that’s the most useless thing I have ever seen “
I like that you chose to branch into non automotive engineering videos. You explain topics very well and shouldn't limit yourself to one area
I would like to see videos of all kinds of mechanical things from this guy
Especially focusing on combustion engines in 2026 seems like a bad idea
all of this relates to vehicles and ice.
hybrid is the only way forward. electric only isnt great. just wont do.
it can run on just water. or blended with alchyhol or mixed e-85
your electric only cars depend on the grid
@IOUaUsername Horse powertrains and their new flat 4 that is going in many many new french hybrids would disagree.
Gone from big battery and motors to smaller battery and engine with a generator attached to power the motors. Brilliant.
@candyman9635pregnant horse runs twice as fast because it has two horsepowers
As an automotive engineer with soon 30 years career, I had never heard of these gearboxes. Every day is a school day. Thanks.
They have virtually no backlash with minimal losses compared to any other no-backlask mechanism. So, when you really, really have to be able to control rotation accurately and with a lot of torque from a small motor... That is why they are #1 in robotics, it is mainly about the lack of gaps between teeth, and then about it also being compact. It isn't so compact that it would be the main reason, but it also happens to be very compact.
the might find use in wipers, power steering or window regulators, they not really suited to propulsion.
So, automotive industry prefer planetary gear instead
Then also check out harmonic drives.
It has been used in some excavators being paired in travel motors.
So that crazy guy at the Spirograph factory was on to something.
You sparked my memory; I did notice the gear were not rotating in a ratio predictable way when Playing Spirograph!!!
Dr. S!!
He was also on something
@elec7ricyscousin756 A lot of people on something played spyrograph as well...
Machine designer here. Many years ago, I owned a 1994 Dodge Caravan and had a full size spare tire that hung from beneath the rear of the vehicle. To drop the spare, you lifted a small flap of the interior carpet to expose a hex nut. You used the lug wrench to turn that nut which through a gearbox, lowered the tire to the ground. Eventually the original gearbox jammed and I had to replace it. Naturally, I could not resist dissecting the old gearbox and so after drillign our rivets on the case, I got into the guts of it. Well, it incorporated a cycloidal drive which were stamped out of metal plate. I was so intrigued by this mechanism that I kept it, and still have it to this day. I believe the geometrics of these drives are known as trochoids.
At last, I have found a kindred soul!
I have a 1994 Chrysler Town & Country that is pretty much the same thing. It does not have the same spare tire location though. Yours is much cooler/
14:40 "I've made a machine that throws things very efficiently. Let's see what it does with open containers of water"
Thought the same thing lol
Screw that send it to the batting cages
*age restricted Guinness commercial reference* "Brilliant!!"
Let’s you know that even the brightest minds don’t think that deeply about irrelevant things such as a *massive water spill*
16:56 this is nice to see in the mind thanks for the work.
0:57 this is actually based on perspective. This is because here the wheel not only rotates, but it also revolves. From our perspective it makes two rotations, from the perspective of the stationary wheel the rotating wheel still makes just one rotation.
Came looking for this comment
Can you explain the tooth count? My brain says 1 tooth must equal 1 tooth
Yep, it's all about what you use as a reference point.
@MichaelBrown-wx6zq Your brain is correct, the teeth are the same amount.
However the way the teeth are arranged changed.
Imagine you walk around the planet.
From your point of view you've always stayed upright and never did a frontflip on your journey.
An outsider observing from the "side", however, would see you making a full rotation for every time you go around the world.
This is what happens when the linear gear changes to a round gear, hence the extra revolution.
Even if you change the gear ratio it will still give you exactly one extra revolution.
Correct. The first 5 minutes of this video is basically an April fool's day gag. There is no "up" on a circle.
I think this was the best video about cycloidal drives I have seen so far.
This is the first video about cycloidal drives i have seen so far.
@aurorasun-qs1pgThen you dont need to see any others, hurray!
This guy is really good at explaining engineering.
I learned about backlash when I was 11 or 12. My friend and I built a Lego car expressly for the purpose of pushing a heavy vase off a tabletop. My father had challenged us. We built our gearbox on the theory that if some reduction was good, more was better. We kept reducing until we ran out of gears. We added a box of pennies for weight (traction) turned the motor on and it spun freely but - nothing. Then we noticed that after a few minutes it appeared to move at a glacial pace. Then we placed the whole thing against the vase and waited. In about 30 seconds we heard a “Pop!”. We had broken a few of the plastic gears. Vase 1, Lego engineers 0.
I love this, lol. The best way to learn (imo) is always hands-on experience.
This isn't backlash. It's just high torque breaking weak components.
Backlash is when the initial tiny rotation of one gear doesn't move another gear at all - so you can wiggle one gear/input shaft and the other one stays completely still. Only when you spin it a bit more and overcome the backlash, the other gear/shaft starts to rotate.
@marekogarek6329that’s the part where the motor spun freely but the car didn’t move until the gears meshed - but I thought I’d go ahead and finish the story.
Time to swap to metal gear then
@senioravocado1864 sir, he was 11 years old and was playing with legos
My total admiration for this concise, clear, enjoyable video is completely without any emotional attachment whatsoever. It's totally professional.
I just want to add, to the video maker, great job, brother! Love you already. I did tear up during the video, but that was about something else lol.
5:21 Your position reminds me of teachers who cared and sat down near my desk at school to make sure I understand the explanation. Genius! Greetings from an Armenian fan.
Armenian? G'day mate!
@robertsaca3512 Yep : ) Goodday down under(?) 🦘
im very busy but that can wait 20 minutes
I was performing open heart operation so I told anesthesia to extend sedation 19:47 sec..... better for everyone.....
i didn't even realize it was 20, it felt like 5, maybe 6
For anyone who doesn't understand why the wheel rotated twice. Like I didn't. It's because relative to the wheel, it does rotate once! The marker only points to the center of the other wheel once! One wheel rotated twice to compensate for the other wheel not rotating at all! Imagine both wheels rotating opposite directions. A combined length of two wheels was travelled. If only one wheel moves, it needs to move itself, and compensate for the other one too.
you da real wheel
But what about the internal gear?
Lol buddy, we can see the video also.
@groundedmike Same thing but going along an internal track makes the gear spin the other way so it does two rotations one way and one the other resulting in one total.
My little brain just doesn't understand.
That was one of the smoothest ad plugins ever in existence. I do not mind ads like this.
There was an ad?
This is one of the best sponsored segments in a RUclips video I've ever seen in my life, and I've seen probably a hundred thousand by now.
Very well integrated and doesn't make the audience want to immediately skip like the more "obvious" / commercial feeling sponsor segments. You actually added value to the video that wouldn't have been there without the the sponsored section. Very well done mate
How can you be so delusional? This is a predatory advertising tactic that consumers (especially younger ones) should be protected from, by making it illegal. Can’t blame the RUclipsr, since contracts may force them to do this, or they get paid way more if they do these things.
Please don’t praise youtubers for doing this, I beg you
@phpARTif it adds value to the video and clearly demonstrates what the product does (and if it does it well) then I don't see the issue. I usually don't like integrated ad spots either, but I thought this one was executed particularly well. So well, I didn't skip it. So I commented that and said well done to D4A. Simple as
I need to get to sleep, time to put my phone - NEW D4A VIDEO! Sleep in 19 minutes and 57 seconds.
you have to add a couple of minutes for the comment section
My brain after the video: screw sleep, I have new toy to play with. Now what if....
Try unemployment.
You'll get tons of sleep. Very dysfunctional and non-scheduled sleep.
0:08 The Lego tire has the diameter right there on the sidewall. 62.4mm
That’s cheating….. but also, it’s sometimes good to have trust issues and measure anyways.
I didn't catch that on my small screen. Lego putting that on the sidewall is 🤌
@erinmac4750 you can zoom videos like you do with imagens, btw
These corners of the internet are profound. This is some of the best I've seen.
That was refreshing, you made it understanable, good job professor. Thank you.
That pretty much convinced me to look at 3d printing. Looks like a lot of fun.
You and INTEGZA (another great creator in YT) are showing us all how to teach science! Easy to learn and easy understand.
Congrats, mate.
That was a brilliant demonstration of the fundamental mechanism at the beginning of the video. Now I have an intuitional understanding how this works.
Happy you're getting into a new hobby. It's always better to experience new things and acquire new perspectives in life.
Fascinating your always worth watching thanks
The way that you develop the understanding of a concept from bottom-up is sooo good!
Looks like some oil pumps
oil pumps usually rotate a teethed ring and create a pressure difference by reducing the space in between the inner cogwheel and the ring gear.
Looks exactly like the crank driven oil pumps on International DT466's.
@Bloodbain88or T-444E VT365
So what if we make like a six cycloid cycloidal transmission, it would be big but balanced
This is similar to my thoughts on a 3 cycloid transmission. The two outer ones are half the thickness, and this half the mass, of the inner one. This should completely remove the rocking couple, while maintaining that primary balance. The centers of the primary forces are the same.
With an even number of identical cycloids will necessarily have the center of the primary forces slightly offset.
Perfect balance, and INSANE torque capacity.
You only need 2 or 3 to make it balanced
You only need 3 with the middle being twice as thick. It's not like engines which have secondary vibration at twice the frequency due to the piston reaching its maximum speed closer to TDC than BDC.
@nopenotmedude that's basically why the v6 is so great: mass split in multiples of two helps primary balance, while mass split into an odd number (greater than one) of locations longitudinally helps secondary balance.
With cylinders of equal mass, that requires a minimum of 2 (smallest even) by 3 (minimum odd greater than one). That's six. It also explains why a lot of performance cars use v12; by gluing two v6 engines together, they can tune each v6 to further offset any remaining imbalance by the other.
And that in turn explains why they go for a v12 instead of a v6 of equivalent displacement: the further attenuation of imbalance allows even higher RPM
I could smell the bambu labs advert miles away
Meh, let him get that bag. He has taught millions of people a lot of things
@jackengele2144 Maybe put the ad at the end of the video?
As always this video is entertaining and I learned new things.
The second set of gears is like an oil pump inside common motorcycles.
This explanation was amazing, I found many other explanations of cycloidal transmissions and found them always way too complicated for what was actually happening. Your explanation was so concise and intuitive, congratulations and the best of success
Next video must be about speed god - rotrex viscus planetary gearbox
Without a doubt. The best educational, technically excellent , precise channel on you tube. Always brilliant presentation!
Probably the BEST description of how a cycloidal gear works
13:11 the plug what finished here, was the most perfect plug I ever saw. I had no idea until the last words. You should get an award for it or something
Really? I could tell from the start but then forgot halfway through and remembered by the end 😂
Most illuminating explanation of the topic I've ever seen. Thx!
11:40 learn wielding. you just buy some tubes and you can have that wheel balancer for cheap and diy
Accept the cost of the welder lol, but other than that true
Nice
@collynenglish5598 The printer he's using is probably about $1500 - welders start at about $100 (although cost can go up depending on technology)
this is the best video on cycloidal drive 👏🙏thanks
You explain so well you made me feel not dumb for once
This is how mud motors for downhole drilling work in a way. The difference is fluid drives the center shaft by flowing around the lobes. It's also how alot smaller hydraulic motors are able to create the torque needed to move massive weight.
Love your videos.
God Bless,
JB
Looks eerily similar to hydraulic pump
@JarrettWilliams99unfortunately I'm all too familiar due to rebuilding them lol.
this is how I distinguish between real engineering innovations and just gimmicks / novelties. Real innovations already have been applied or on their way there, unlike gimmicks that still need promotion, advertisements, convincing, etc. Real innovations just give the raw data and just immediately get applied. This is one of those innovations. "But this isn't a new thing." No, it isn't precisely because it's already been put to use everywhere. I've seen them around but never knew why and how of them. Now I do because of this dude.
Real innovations absolutely need convincing. Just ask nikola Tesla.
16:49 no teeth to break no mind to think no voice to cry out suffering
YEEEEEESSSSSSSSSSS
Immeadiately started looking for this comment fr
-fellow Hollow Knight fan
ignorant laymen here; with that much friction on each "lobe" I would think that there would be more wear of the head(?) of each lobe?than a toothed gear.
No women no cry
This is amazing, even his 3D journey
this guy actually made me watch a sponsor without even noticing. and enjoying it. can't add anything more.
Absolutely fascinating. Thank you
and many people even own at least 4 cycloidal transmissions !
it's in your cars front seats. the part you lean your back against is held and set up by a cycloidal transmission on either end.
you rotate the knob to sit more upright or more laid back and the cycloids give the gear reduction to move your upper body with ease !
Thank you for that, now I can’t wait to go play with my car seat!
Also great vid on gear going around another gear. That was actually a SAT question that the test makers actually got wrong. And ur explanation was perfect!!!!!
Creative way to captivate people to continue watching the ad.
Thank you for this. It was very easy to watch. You are very good at what you do!
This explanation was marvelous. Your video made my day.
Thank you.
In relation to a flat panel a wheel indicator points towards that panel once.
When it goes around another wheel, it points at the wheel once too.
In relation to both, the wheel does only one rotation.
But because the wheel is also curved, from our perspective the curvature adds rotations.
That's a good way to look at it too!
I was just exploring the explanation between centripetal and centrifugal not long ago.
18:40 I think you can balance it by using 4 gears, just like crankshaft counterweight in 4 cylinder engine. When 2 gears at the ends in upper position, 2 other at the center in lower position. You can also simplify it by conecting those 2 gears at the center, so it become 3 gears; 2 thinner gears, and 1 thicker gear (same total weight).
Yeah. I think this could work. It would make sense. Wish I had a 3d printer to try this out
@toobcat24 I thought of simply "splitting" one of the gears in two, and sandwich the other one in the middle.
Let's say that you need a total width of 6cm to withstand the torque.
Starting on the left: 1.5cm cycloid and ring gear UP offset, 3cm [...] DOWN offset, 1.5cm [...] UP offset.
So you have only 3 layers, one less crank in the shaft, and still the UP weight is the same of the DOWN weight.
Could it work?
@pomodorino1766 basically it is the same concept. splitting 1 gear to 2 thinner ones, or using 4 gears and connect 2 of them, or simply make 3 gears; 2 thin & 1 thick directly.
Right! so the real compromise is adding bearings at all those points of contact. Of course, may points make light work for the bearings.
This a fascinating. You are very good at explaining complex things in a simple way.
I wish my mechanics teacher in faculty was that straight forward and intuitive.
7:15 before you added the shaft and later pin plate, your demonstration reminded me of the inside of an oil pump I once saw (rotor type I think). Do oil pumps also operate in a similar way to cycloidal drives or are they only similar in their motion? Apologies if it’s a dumb question and thanks for the video!
I think those pumps are giust two gears pushing oil (or hydraulic fluid) on one side.
The cycloidal gears would compress the liquid between the lobes and that could be a problem. Unless it has valves and acts more like a vane pump.
@8:00 that also makes a very good pump once the sides are closed. thats how oil pumps usually work.
Or try making an engine out of that.
What if you balanced it by having 3 gears in line where the center one is the same mass as the 2 outer ones, either just thicker or having less extra mass carved out
Well now you're sacrificing material cost, weight, and size. There's always a tradeoff
I've made the same consideration... one day later.
I think it's the most effective way.
One of the best channels on RUclips. So informative!
Thank you for explaining how well pumps work
6:39 to be same as with teeth, it would be 100 and 88 teeth. Its about ratio not amound of teehts/lobes
Why not 1 gear at 0, 2 gears (double thick) at 19:57 180, 1 gear at 0 again? Mostly balanced.
My thoughts exactly! How about a 6-pack cycloidal, an inline C6 of sorts 😂
14:51 have you thought of using plasticine instead of water
I didn't think of that and I didn't have any, but good idea for future! Tthe lifting test was a bit of a spur of the moment idea, so the arm is just a square since I originally thought about putting bolts in there, but all the bolts I had were different and dirty and so I woul need to include shots of me weighing them and it just looked lame so I put a round jug on a square arm which looks even lamer 😅
As always the master explainer! Thanks for sharing!
I absolutely love simple physics! It's all I see in every breath I take, simple physics..
I know this illusion at the start, I showed my family. It's because there's an extra turn as the wheel goes upside-down and back - so it only does an extra turn from your perspective. From the perspective of the inner wheel, it does one turn!. Show your family with coins, they'll be amazed!
Balance problem potential improvement.
Towards the end of the video, you show the problem of Balance after adding the second gear.
Could this be minimised by splitting the second gear and placing one either side of the main gear with a crankshaft to match?
This should then equalise the lateral forces around the then central gear.
R
Exactly what I was wondering. I'm sure there's an "obvious" reason why not which I just can't see. Maybe it starts getting sufficiently more complex when you do that sort of thing that other solutions become more effective? If anyone knows why it wouldn't work I'd love to hear.
I have been 3d printing for about a decade now. And it definitely changes how you think of things. I never have to buy an adapter anymore because I just print one. Have a 1in vacuum hose and need to connect 1.5in accessories no problem simple print and you have what you need in no time. Bambu Labs has made an entire eco system and you really can not beat their system. No other printers allow you to open their app scroll to some model you like and print from your phone! I hope other printer manufacturers start doing this because its kind of a captured market at the moment. The ease of scrolling and clicking print from the phone is a huge game changer because it definitely makes it super easy and it definitely causes you to mindlessly scroll for hours! And the speed of their printer is amazing as well. Gone are the days of 60mm/s prints lasting days.
All true. I think what bambu did is that I took a market that was previously only for serious tinkerers/diyers with substantial skill and made it approachable for people with little to no skill. When you think about it ,it almost seems weird it didn't happen before. There were several big players in the field before bambu got in. What impresses me more is how little maintenance the printer actually needs. Coming from the world of project cars and bikes I almost feel guilty :) I've done hundreds of hours already and all I had to do was to lubricate the rods once. Somehow seems wrong :))
@d4aexcuse me do you know is it possible to use this cycloid drive in a watch instead gear train? I am not engineer, physicist, but just think about it)) what happen with watch characters if install this😅
Always an absolute pleasure to be edumacated by you.
Thank you. I always learn new things from your videos.
WooOoOoO
Great video, but around 18:00 your “rolling contacts” are sliding in your 3d printed gearbox. The real ones just have bearings there, but I found that to be confusing
i saw this with pennies rotating but could not understand the explanation here is really easy to follow
You simplified that, couldn't imagine understanding without your props.
19:28 So why not double it and make it have balance of inline 4? I would assumed it's no longer compact and driven up the cost. But hey it still torque god right?
And is maintenance free
19:22 Can the rocking couple be reduced by having more, thinner cycloids? Like 6 cycloids that are each 1/3 the thickness?
Technically, yes, you could, but still a considerable big transmission for a single ratio.
@Rrgr5The part count would go up, and the complexity of the shaft would go up, but the physical form factor wouldn't need to grow beyond possibly a few fractions of a millimeter if the cycloids don't lie perfectly flat against each other.
I was thinking that you could just put two cycloids of half the mass on each side of the central cycloid.
@codysteeleThat sounds better than my idea
This man is a great teacher, I wish I had him in my school.
What a fascinating and easily understandable video. Many thanks for your work. 👍
0:49 NOT the same distance! 2x the radius! (Track the center of the moving wheel.) ATC test had the same error. Veritasium-42 has a whole episode on this!
thanks chatgpt 👍
It’s always nice to see who doesn’t watch a video
Bro you're never going to believe what he says literally right after that
Yea, he covers it.
Nice video. But, you lost me at 6:30 when you describe and demonstrate that the 99 tooth gear does not fit within the 100 tooth container gear. The change at that point is from pointy, to curvy teeth in your demo model. The argument seems successful only because the comparison model has just 9 'teeth', while the immediately prior model has 100. A little sleight of hand? The new model should have also had the same density of teeth; 99 and 100 curvy teeth for a more perfect comparison, at which point the argument probably would fail.
Don't focus on the amount of teeth but on the ratio of input to output rotation. What he demonstrated beforehand is that when the wheel gets close to the number of teeth of the outer circle, the angle of rotation gets smaller, meaning the ratio input/output gets smaller too. With the new shape, he conserved the ratio (8/1) while avoiding superposition 👍
The ratio of 8/9 is different from 99/100 @mioki-leaf2
He pointed out the teeth anatomy for gears didn't allow for a 99/100 teeth ratio. Tho it would be cool, you'd probably be stuck to a 90/100 teeth ratio which is only a 9:1 ratio of resolutions. With the other model, you can go higher than that, as he mentioned you could even go for a 100:1 ratio (which is greater than what you could get with a 99 teeth gear on a 100 teeth container anyway)
You can make a cycloidal drive with any ratio. That’s the nature of cycloids
I think the correct comparison would've been the radii of the two gears, after averaging out teeth / bumps.
i clicked this video because i was bored, but i started paying attention and learned something. great video
Wow, what a lovely explanation! Great video, thanks!
This is a good video for anyone learning about Planetary gears in transmissions
MAN! egal a GREAT video! You explain extremely well!
Your explanation and demonstration of the circular paths thing was excellent.
This might be one of the best explanation’s I’ve ever seen on a topic I’m no where near an expert on. 10/10
I love this! A beautiful presentation.
You are amazing! This deserves a follow.
I wish your videos would pop up more often in my timeline. They're just superb.
very detailed and interesting explanation, thanks!
This explanation is so CLEAN that while I was watching my laundry got done by itself 😂
Thx for another brilliant video.
You had a really good pitch for your sponsor this time🎉 good job!! Very well said👍
This was really well done. Even I was able to follow along!
This video was so well done that I sent it to two of my sons.
I always learn something from this guy!
Brilliant work, and well explained. They improve the situation but not in every case.
Really nice video. I learned something, and it was explained very well and in detail.
You blow my mind with this gears rotation expalantion, very good material!
Superbly presented