Understanding PLANETARY GEAR set !

[@tensevo]

Teachers have spent hours trying to explain this simple concept whilst an animation does it in 2 minutes. Thank you.

[@tmike9470]

3 f***ing weeks to understand this concept at uni and in a 4.52 minutes video you explained more clearly than my teacher. :D

[@akashk1bhai862]

THIS IS BETTER THEN COLLAGE

[@anwaraisling]

Good visuals help. Also, university is not what it used to be. The internet gives far more information on demand with multiple sources. Most of the time this is for free. University just can't keep up with this.

[@mapesdhs597]

Plus, these days a lot of unis just teach identity politics, not engineering.

[@s01verdandy]

I remember one of my professors telling me "The most important thing you must learn is to study by yourself ! " It was a good advise. Internet, being probably the greatest invention of the 20'th century, helps a lot in that regard.

[@yuchengzhu7178]

I learned it when I was repairing my broken electric screw driver. University really isn't an efficient place for learning things.

[@nicewhenearnedrudemostlyel489]

1:23 "that is an impossible condition" It is very much possible, very well documented and often fun to watch from a distance. you may carry on.

[@demonking86420]

Oh it's bad for the teeth though

[@demonking86420]

Oh it's bad for the teeth though

[@wizzard4003]

tends to up the maintenance costs a bit

[@azonicrider32]

it is an impossible condition for gears to pass through gears without destruction, as shown in the video.

[@wizzard4003]

impossible conditions are a weak mindset, its only impossible when you stop trying.

[@vitroit8974]

Whoever invented this deserves a cake. Genius.

[@johngilbert1752]

It may have been Henry Ford. The model T has a planetary gear transmission

[@romane.67]

James watt invented it to get around the patent for using a crank shaft to turn reciprocating motion into rotational motion ;Watt patented it but it could be the invention of one of his employees en.m.wikipedia.org/wiki/Sun_and_planet_gear

[@ChipmunkRapidsMadMan1869]

I made inattentive driving much more popular, that’s for sure.

[@safffff1000]

I need to hold this in my hands to see work.

[@iAkariQuietly]

after differential this is the best engineering marvel i have ever seen

[@newton3010]

THE EXPLANATION OF THIS SYSTEM WAS OVERENGINEERED...

[@ClarkManorDesign]

Praise the sun gear.

[@Trident_Euclid]

Clark Manor Deus 4L60

[@WesternScienceUSA]

ahahahahahahaa

[@keshar.singh.rajputrajput333]

Clark Manor ..

[@SuperDave-vj9en]

I'm bowing down now!

[@vegamario7543]

May the sun gear shine your way , unkindled one.

[@chandansahu004]

You guys are doing very great job All animation videos are very good. I am assistant professor in mechanical engineering . I used to show my students. I hope you guys will make such knowledgeable videos related to mechanical engineering. Thanks you

[@zachweyrauch2988]

I have zero practical need for this channel. I cant stop clicking their videos though.

[@claudiomaiasantos]

Amazing! When I finally undestand it, Eletric Motors comes and render it completelly useless!

[@devadathpavithran9752]

hi i am kundu . this gear system is a wow wow. i am understanding not before,but after,now i am knowing.many many thanks and bolo jai zuban kesari

[@pauldzim]

These robot voices are getting really good!

[@matiasmov1]

Best video about this mechanism, not only for the images but for the detailed verbalization in order to understand the logic.

[@quomodoqmd]

Thanks for sharing engineering with a wide audience!

[@kpnckasni4902]

This Indian channel easily explained everything . Proud to be an Indian

[@kpnckasni4902]

@Yashsvi Dixit same 2 you

[@ATLAStheprotogen1]

I’m only 12 but managed to make an entire transmission with this video

[@Good-Enuff-Garage]

the best explanation on the Internet

[@clariona]

I learned this more easily when I was 12 years old by reading a series of carefully written car books, produced in 1957 and offered for free by GM. Specifically - "Power Goes To Work (In the Automobile)" and revised in 1969. And it does help to be in a calm state of mind. Ha ha.

[@arunk8663]

I have assembled planetary gear unit set in transit mixer however this video clearly explains a lot thank you 🙏

[@parthkayasth435]

I have cleared BE in 2017 and understood this concept in 2021 😝😝😝. God bless you Sir. Make more and more videos Sir.

[@tyagiaryan82]

You must be a disgrace to your parents

[@VenkaKoda]

Best Channel In KZbin.....For Me

[@avinashmatlani]

Venkatanaveen Kodamagundla. . .....

[@inspirer4763]

Why I'm watching this at 4 AM instead of sleeping? I'm not even into engineering.

[@dannyyo7948]

because you are inspired?

[@ArnaudMEURET]

You will. Google knows.

[@andresillaconzacabana917]

Here I have my infinite reduction machine :kzbin.info/www/bejne/eYLFiWB9oJyLncU

[@epicmusic7918]

Same here

[@sangramjitchakraborty7845]

You are into engineering now. KZbin algorithm has decided that you are.

[@suleshangodoyin]

Surely, all those views are very good for learning process and also thanks goes to all production-teams! It's me, Sule Shangodoyin.

[@davenewell9137]

I love engineering

[@oneulharu780]

mee too

[@faisalmuhammad6681]

me 4

[@bretteur2legende]

me 5

[@rodrigochiozzini]

Ok

[@heythere2904]

Me 6

[@buttonman6262]

Nice touch getting Robert Forster to narrate this!👌🏻

[@aleksandrnestrato]

BMW with a transversal engine and front wheel drive? NNNOOOOOOOOO!!!

[@Luxerification]

Exactly the comment I was searching for LOL! On the spot!

[@renatoigmed]

RIP real BMW

[@cillitbang5228]

I'm afraid the nightmare had become reality since the release of the new Clio... I mean 1 series

[@andresillaconzacabana917]

Here I have my infinite reduction machine :kzbin.info/www/bejne/eYLFiWB9oJyLncU

[@marcdecock7946]

We had a 1series with rear wheel drive, now an X1 with front wheel drive... You would probably say the x stands for ex-bmw, but it's not so bad, especially with some snow on the road.

[@EngineersAcademy9204]

Superb Video, With Superb Animation !! Thanks LE !!

[@feathermerchant]

Alright got it, good video. Now what I really want to know about is an interplanetary gear set!

[@jamesmclemore9123]

This video taught me more about engineering than half of my college classes.

[@ShortArmOfGod]

Probably should have used your brain a bit more then.

[@jamesmclemore9123]

@@ShortArmOfGod it's not that I didn't understand the classes, it's that those classes had nothing to do with engineering.

[@marcdecock7946]

Also an interesting application: the hybrid drive from Toyota...

[@qwasrfg]

Yes. Toyota calls it the Power Split Device (PSD). Motor Generator 1 (MG1) is connected to the sun gear, MG2 is connected to the ring gear, which is in turn connected directly to the driving wheels, and the internal combustion engine (ICE) is connected to the planetary gear set carrier.

[@marcdecock7946]

@@qwasrfg If I understood correctly, the ratio between the ICE and the wheels when MG1 is not turning, is comparable with a classic transmission's 5th gear... driving away from stationary happens on the power of MG2 and only at a certain speed the ICE is turned on and gradually takes over... MG1 regulates the ratio between turning speeds of ICE and wheels. Cool application, and seems to be rather reliable.

[@qwasrfg]

@@marcdecock7946 Yes. You have perfectly understood how the Toyota hybrid synergy drive system works. And, as you have explained, the way the ratio of the contribution of torque from the ICE to the wheels is regulated by MG1 is why Toyota calls it an eCVT (electric continuously variable transmission). Normally, the ICE kicks in around 60km/h, unless you press the accelerator pedal hard. If the ICE is running, any excess mechanical power is converted by MG1 to electrical energy and sent directly to MG2 to drive the wheels (in which case the system becomes a series-parallel hybrid) or sent to the battery to be stored for future use. If the wheels lack power, electrical energy from the battery is dumped into MG2 to help the ICE if the computer calculates that this is the most efficient way of using the available energy (petrol in tank and electricity stored in the battery). When you lift your foot off the accelerator pedal and/or press the brake, MG2 becomes a generator and charges the battery. If the battery is full and you are running downhill, there is a B (brake) mode you can use. In this mode, the electrical power from MG2 is sent directly to MG1. This causes MG1 to spin the ICE, the latter working as a compressor since no fuel is being injected in the cylinders. Thus you still have conventional engine braking but without wasting a single drop of fuel. Beautiful technology!

[@marcdecock7946]

@@qwasrfg I agree, it's not that much additional hardware, and the result is worderful. Also recuperation of brake-energy... I did my thesis on CVT's with a V-belt, too much wear and tear . I understood Toyota is also looking to make a hybrid driveline with a double planetary gearset, even more fun, but they seem to have some difficulty to optimize it with electronics...

[@OldCrowsClassicCars]

Great vid! I wish you had one specifically for the Borg warner overdrive, that used the same setup to simply add a gear to a manual transmission and at the same time make it automatic!

[@Splarkszter]

This videos are way better than the today ones.

[@vaishakhsudhakaran1515]

I've been waiting for this video for a very long time 👏

[@truongtruong817]

Why did you waiting?

[@screwsnutsandbolts]

Brilliant video ! 👍

[@microwavedbread1591]

You lost me at 00:01

[@orglancs]

Me, too. This 'explanation' is totally impenetrable to me. In my experience, technical experts are quite unable to explain a concept like this to a non-scientist, non-mathematician, non-technical person. They just do not know where to start. I have just watched it again and it was even more confusing a second time. It reminds me of science at school.

[@tracypanavia4634]

🤣

[@sangramjitchakraborty7845]

@@orglancs maybe you just don't have the aptitude for science? Different people have different types of aptitude.

[@orglancs]

Sangramjit Chakravorty Thanks for your reply. yes, of course, and that is probably true. But I would certainly be able to understand how it works if I had one in my hand and could rotate the gears and work out how they fit together. But technical people definitely do not seem to be very good at explaining things to non-technical people. I have watched many explanatory videos on YT on scientific and mathematical topics and haven't found a single one that is simple and clear. They always move far too quickly an d assume you know all sorts of things that they take for granted, which you don't actually know. The worst are the mathematical videos. With a practical item like a gear, you can at least imagine its reality, but as for calculus or anything with equations in it, well .... I gave up long ago. I would just love to pin down a mathematician, face to face, and ask questions. Where does that new quantity come from. Where is that x squared from? It has just appeared out of the blue without explanation. Everything is so abstract. How does one know that the items in an equation refer to something real? Maybe be the mathematician has just made them up?

[@calyps0man]

@@orglancs I feel exactly the same about all of these scientific topics. Technical people seem to live in their own world and are incapable of thinking like a non-expert. Sadly there are teachers like this as well, and they just skip over a lot of steps and expect you are able to follow... It's rather frustrating.

[@spelunkerd]

Elegantly simple, classic engineering thought.

[@FlameBlueNova]

kind of feel like the narrator tone is pat-ronizing me because I don't know shit about gears and am watching this for fun.

[@yru435]

I am surprised that he is still alive: he MUST be the guy who did all of the voice-overs in 1950's feel-good newsreels!

[@John_C_J]

Dare not judge a helping hand.

[@bobgatewood5277]

Gears are quite easy to understand, once you get 2 points: 1. Perimeter: a gear with 2* perimeter will make an adjacent 1* perimeter gear, spin twice as fast. 2. Clockwise (C) and counterclockwise (CC): very important to see spin (or as it is called in science and engineering "angular momentum") as going C or CC, not spinning "to the right" or "to the left" (confuses things). So a 'C' spin will go: - downwards on the right edge - upwards on the left edge - rightwards on upper edge - leftwards on the lower edge 'CC' spin will be the exact opposite. If you see a complex gear system, just break it down to its component gears and observe their individual behaviors (you may wanna start where the power comes).

[@IhsanMujdeci]

My brain is exploding.

[@rodrigochiozzini]

Nice

[@jcrosslin8]

I know! I'm trying real hard to keep up too! Lol

[@kucaistil]

Haha

[@dailyupdateswithshivam5437]

@dex dipa hahahahahaha

[@pedrovargas4734]

. ....

[@soundkit]

영상으로 보니 확실히 한방에 암기가 되네요 감사드립니다

[@joeshmoe452]

You could make an equal wheel spin differential with 2 of these. Awsome!

[@myctaqmaqnomad6819]

Адамнің мійі электрон әлемыне кіріп осіндай видиоларді құрастіріп өте түснікті. Жарайсың дар өте мақтаніш!!

[@rogerjohnpalabrica9825]

This gear also used in cordless drill

[@DavideBaccolini]

You couldn't be more clear ! Thanks. Please go on posting

[@davidherrera2465]

Se ve exelente así es gran funcionamiento interior de el diferencial 👍

[@1992jamo]

I think this is so much less obvious when you show the ring gear moving for both first examples. Much easier to understand if you see the sun gear being driven with the ring gear still, and the carrier being rotated by the planetary gears revolving

[@SergeySuper_Silver]

Thanks for the lesson! It's very useful :) Also I would appreciate if you made a video on how to calculate the planetary gear ratio.

[@Shadethewolfy]

Theoretically, the Planetary Gear can also be used for infinite energy, assuming you can - find a Synchro powerful enough to get the gears spinning fast enough - find a way to keep the gears from breaking before they reach that speed - find a way to avoid Inversion (the gears getting so fast that they end up getting in the way of THEMSELVES and the entire thing locks up as the gears pingpong back and forth between themselves and themselves until the entire thing just explodes)

[@2003AudiS3]

But you forget friction and the heat generated by it

[@Shadethewolfy]

@@2003AudiS3 True. It's entirely theoretical, but I wonder if hard light constructs would be subject to friction and heat? It wouldn't break down, so if friction isn't a thing impeding speed, the biggest threat would be Inversion.

[@Rolnick666]

BMW with FF layout model xDDD

[@Sherlock5109]

I don't understand anything, how many times do I have to watch this video to understand?🤔🤔🤔🤔🤔

[@nirajburnwal9662]

Sir, can you please tell me which software did you use to design these animations. Your videos are awesome.

[@kulturfreund6631]

Brain challenging. Have to watch it again. Thanks for the brilliant lessons.

[@michellegibbs6907]

What causes the planetary gear set to become damaged?

[@LexusGX460-OFF-ROAD]

nothing. It is constantly meshed. Clutches and brakes can wear out though... alsong with hydraulics

[@michellegibbs6907]

@@LexusGX460-OFF-ROAD I have a 2022 Tahoe with 7000 miles on it and the transmission started making a noise. The service department said the planetary gears were damaged. What other part malfunctioning would have caused them to become damaged?

[@LexusGX460-OFF-ROAD]

@Michelle Gibbs just trade the Chevy for a Toyota or Lexus... 😃

[@Isjix4410]

@@michellegibbs6907 lack of lubrication from insufficient oil pump pressure will cause the gears and/or the bearings inside the planet gears to overheat, burn out bushings, etc. or serious abuse can damage the planetary gears.

[@michellegibbs6907]

@@Isjix4410 thank you for that information. I want to make sure whatever caused the planetary gears to become damaged is fixed.

[@LukTzeChing]

This shows the power of graphical explanation!

[@aliqazilbash5231]

wheel within wheels 🥺🤤👽

[@ChipmunkRapidsMadMan1869]

In the corner of your mind

[@jonathanhart54]

A phrase I learned to help determine what’s gonna happen, depending on what the carrier is doing: Oh I Really Hate Ugly Oldsmobile’s Over drive (Oh) is created when the carrier is the Input (I) Reverse (Really) is created when the carrier is Held (Hate) Underdrive (Ugly) is created when the carrier is the Output (Oldsmobile’s) And from there you can know by if you know which gears are the input and which are the output (bigger gear driving a smaller gear = more speed and less torque, smaller driving a bigger is the more torque but less speed)

[@usernew4945]

Ага. Теперь все понятно. Осталось выучить английский язык

[@timurmurzabekov3821]

😂😂😂

[@harshalghanate3681]

Seriously helpfull Previously i was confused and after watching the video im completely satisfied

[@arseniy6800]

Спасибо за ,,обьяснение,, принцип работы- сам додумал

[@AncientWisdom222]

A complex concept explained simply !

[@jaxxbrat2634]

Should be titled: How to complicate simple

[@rolandmousaa3110]

Educational Service... GREAT! Thanks..

[@shubhamkumbhar2172]

all the animations are good. I want more learning videos on carburetor because no such a explaining video on KZbin that explain working of solex,su,or Carter carburetor . please create animation video on above type of carburetor

[@briiandee]

pay the man

[@1979Spica]

These comments make me feel smarter. I was a bit worried for a minute

[@rcomascat]

Front-wheel drive BMW?

[@niklasohlsson]

The BMW 2 Series Active Tourer is a FWD....

[@РоманСойфер]

Niklas Ohlsson active tourer is not true bmw

[@rolyfisher9137]

rcomascat Every Mini is a BMW. Every Mini is fwd.

[@marcdecock7946]

@@rolyfisher9137 we had a 1 series RWD before, and an X1 FWD now... both 136 hP The 1 series was more fun... for us with good weather, for others with snow on the road... We also have a smart with RWD, but that has no comparison with the 1 series. It's more likely to flip over (than to give you more grip for the driving real wheels when accelerating).

[@adityayadav6712]

Stunning Explanation.

[@frankcrawford416]

Don't understand this mumbo jumbo. Great video though!

[@mohanakannanm1563]

Animation is most helpful for understanding

[@sandipanbaruah3179]

2:47, How do you rotate the ring gear? There is no shaft connected to the ring gear for torque input.. please explain

[@samovarmaker9673]

If you want, the ring gear can be it's own wide shaft.

[@anthonypape6862]

@Mr Sunshines wow harsh reply. At the risk of sounding like a moron myself I have to take it. Can I have a Ring gear be the drive gear. For example it would have teeth on the outside as well as inside. The outside teeth are rolling down a rack gear like a wheel on a railroad track. I would make the planets stationary and the sungear is my output gear. I basicaly need an 8" diameter wheel that is rolling at 20mph or 840rpm to turn a shaft 3,000 rpm. I thought planetary gear set up would work well. Thoughts?

[@briiandee]

@Mr Sunshines u could just say refer to 41 seconds into the video when the animation is complete.. and also mention the power input turning the planet carrier turning the pinion gears which turn the ring gear? Instead of just calling someone a dumbass..

[@briiandee]

@Mr Sunshines lmfao you are a joke of man

[@briiandee]

@Mr Sunshines no counterarguments in any of his replies.. just the word "dumbass" Look everybody!! We found someone who thinks they're cool because they understand simple gears! Lmfao

[@Underpowered3719]

got an uni essay due in tomorrow about regional development in business.... but nah... this is actually really interesting

[@TheRealXartaX]

Welcome back, fakest of fake voices!

[@JayMiV]

Pat-reon lol

[@gotthisusername]

Is it software? If yes which one?

[@threepointonefour607]

John Leo RTFD: READ THE F***ING DESCRIPTION

[@arthurgreiser]

Да, несомненно это одно из величайших достижений инженерной мысли!))))

[@mr.x6409]

Its hard for me to understand this shitness!!!

[@mortiferum87]

so, you are dumb

[@ZhengZZZ]

great video which help me understand the principle quickly :D

[@armenbabikian94]

best video about the planetary gear!!

[@СергейЕхамов-х4и]

В СССР планетарные редукторы работали с конца 50-х. Карандашем, на ватмане вычертил готовый проект такого чуда и было это в 1978-м...

[@pran0808]

The best explanation with all fundamental concepts . Just loved your work @LearnEngineering .Love u

[@davidkatuin4527]

Using the right words to describe a specific idea or action is critical to conveying information that is measured physical action.

[@elegantespace0]

wonderfully simplified, ..that too,with exact clarity

[@IainDavies-z2l]

You have your sun wheel, your planet wheels, your anulas and that's it. They were used mainly in gearboxes on trains and busses.

[@lelekelelep]

Cool knowledge there dude. I just wanna give a little suggestion tho, I think you should add a background music to make the video less boring. Keep up the good work, man!

[@CIorox_BIeach]

Holy crap, makes perfect sense.

[@krisc1243]

awesome video. Thanks for saving our planet!

[@siddharthgandhi6342]

I have imagined whole day, it was hard but finally your video cleared the concept. Thanks to your team.

[@myuniversitymuet6598]

Love Industrial Engineering💚

[@gittigold4377]

Danke, genau so dachte ich auch seit langem.

[@bitcoindaddy748]

So somple yet so smart 🤓

[@Красныйсмех-с9к]

Как я раньше жил без этого😂

[@actorzone856]

I am now fascinated with planetary gears, invented in 20BC to predict the movement of the planets and the moon, I see them all the time in the gearbox repairers scrap bin, good for making reduction drives for limited space, the maths involved is mindboggling, also this is a basic idea, they get a lot more complicated when more gears are added.

[@isaacbjorgan1829]

Im in school to be a millwright and the maths for this shit kill me .

[@mohammedashique6236]

Very good explanation

[@TheSupertecnology]

I need a video like this, explaining the power split mechanism from a Prius 3rg gen.

[@catmanflorida8545]

Thank you, I just found your channel and subscribed. I love this type of info. !!!

[@user-omkumar510]

It is easily explained so nice.

[@beastmaster645]

maybe i shouldnt be watching this while im half asleep. my brain cant process it.

[@peterausburn3942]

A ring gear is an external gear and normally mated to a bull gear, an internal gear normally mated to a planetary gear IS an annulus.

[@farloux]

I'm watching this (3:28) with my own eyes and my brain doesn't want to accept it as real that a gear can have different velocities at different edges.

[@satishsahu123]

good explanation in short.....love it..

[@johndoyle4723]

Thanks, now my brain hurts, and I am an engineer. All credit to those who designed these devices.

[@evaristobwalya5901]

You are excellent engineers 🙌