How a CVT works! (Animation)

[@vm5571]

So far the best CVT explanation I saw, many others fail to explain how the belt interacts with shaft and V shape details. Well done!

[@lexsoft3969]

You are right. Some don't explain how to move the moveable face of pulley which I want to know more detail.

[@danielmay7107]

Yeah this was a really nice illustration, but plastic kid at the end was creepy AF.

[@basedarsonist]

​@@danielmay7107the vid was made in 2016, cut them some slack

[@danielmay7107]

@@basedarsonist 😂

[@muhammadfarooqi]

the best simulation i've found to understand ---- how the moving part comes closer or moves away from the spinning part.. this is really informative. Thank you sir.

[@soilmanted]

Nice description of the distinction between rubber belts, segmented metal belts, and chains.

[@vjvinokrishnamoorthy8539]

best CVT explanation video.

[@davidpenn49]

Thanks, TS, very helpful video, well done (just cut out the music!)

[@shaleknight6224]

vj vino krishnamoorthy totally agree

[@olicapili7672]

vj vino krishnamoorthy

[@Andy-Against-The-World]

Yeah it actually explains the method of operation and construction in detail it's nice to see as before I had no clue how a cvt did it thing.

[@bekayjay2289]

Thomas I don't care about negative comments. Some people only want to hear what they think is right. You have done a splendid job of teaching something we did not know. thumbs up to you.

[@koibatnahi4683]

The simplest video on CVT that i have seen so far. Thank you.

[@keitofu]

Great video here !! By far the most complete and simplest explanation found concerning CVT. Thank you for the last part explaining also that modern cars use oil pump to adjust position of the sheaves. I came here because of that part and found the right explanation Thank you so much !!

[@zahidahmad3260]

One of the best explanation I have ever seen. Now I get how CVT actually works after watching this video, thanks to admin

[@lukerussell2990]

You are very smart!! My Nissan has a CVT and I now completely understand how it works! Well done man!

[@MrSteve280]

Short, simple, to the point with follow-up options. Well done Mr. Schwenke.

[@rickyblade1155]

Your videos are fantastic! It makes learning so much easier when one can see an animated visual of the component working. Bravo! Keep it up.. This is my new favorite channel. Waiting for a video on locking and limited slip differentials.

[@karyllhyacinthe6202]

WOW! Genuinely impressed by the explanation and animation

[@dillwizard7516]

Very good production Thomas. Clear and concise explanation. Thank you

[@Pete856]

There is a big difference between how the scooter belt works and a CVT belt. A "normal" belt pulls from the drive pulley (or sheave) to the output, a CVT belt pushes. As a result the 2 belts are built completely different, a belt that pulls is much easier to make as the tension keeps it running straight, so as long as the internal strands are strong enough, it holds together. A CVT belt has to push straight without buckling, it does this by the drive elements locking into a solid mass when under compression.

[@mark-zk9fv]

now i understand how it works, for many searches, this is the best explaination.. thanks ..

[@kckcmctcrc]

very interesting... Engineers are not unlike artist. You have to be pretty creative to conceive such things.

[@AP-bo1if]

there is a difference between engineering and innovative engineering. most true innovative engineering is dead these days. the reason comes down to is "if you have an idea then likely someone else has already come up with it in the past" 95% of engineers typically work off existing systems and designs make small adjustments in order to reach design objectives. there is that few percent that produce something really innovative and unique, that's where the art aspect comes in, and it's rare.

[@segredosdotiosam9989]

You must be an engineer . You said "are not unlike " instead of " are like"

[@brodierand4963]

But also have a special hate for millwrights

[@pernellfomby9933]

@@brodierand4963 truth!!

[@gopiramanujam1060]

@@AP-bo1if Talking about art in mechanism is bullshit. You don't know engineering

[@amandeepsinghsandhu4906]

Wonderful animation of CVT. Kudos to developers. Thanks for amazing explanation

[@nikhilkash92]

Very nice. The animation of the sheaves movement is very nice both centrifugal weights and hydraulic mechanisms

[@samc5898]

I LOVE YOUR VIDEOS. Your animations are just incredible and your explanations are concise and understandable. Keep em coming! (PS: I liked your original voice much better than this American version. It's more "soothing" and easier to listen to.)

[@TrainTrackTrav]

I always thought a CVT some how used some type of single conical gear that meshed with a single input gear that used a centrifugal device to slide the input gear up the conical gear. Huh, learn something new every day.

[@lucifermorningstarLMX]

You are the best to explain things like this bro. outstanding animations and narration.

[@kampkrieger]

nice graphics, clear and understandable explaination, I also like that you pause a lot for several seconds

[@louisswanepoel695]

excellent, short and sweet. direct info, no wasted fluff.

[@DoomFinger511]

Damn, this was some good animation and explanations. You earned my like.

[@eazybrezzy]

I never understood the CVT at first but after seeing how it runs and how the oil creates thru the oil pump and how it's made from a variable stand front now I see it . Thanks for explaining it really helps

[@jagsproduction]

Thankyou so much sir, i was searching for the reason ,how sheaves moves since months, amd today i got my answer, well excellent explanation!

[@stevemitchell2252]

This is a very good video explaining how CVT transmissions work....

[@PeteHottois]

Speed Selector makes variable speed pulleys that replace the Reeves and Hi-Lo pulleys. I think they went out of business. A lot of them are in stock or they can make a custom if needed. They have an actual engineer to help you if needed. Very helpful.

[@Brewsterblock]

Great depiction of how it works!

[@NoorquackerInd]

I like your original voice better than the new ones.

[@gmacreef]

+Noorquacker Ind. Totally. Guy has clearly never read the word "centri-fugal" before.

[@ashGT40]

Me too

[@studid55]

I agree :(

[@nickcook3948]

Yeah. What's an "onomobil"? kzbin.info/www/bejne/rnm6op-ceb-ho7Mm

[@jelle4765]

CVT, ( Continuously Variable Transmission) a dutch invention in the '50 (1953-1958). Made by Hub van doorne the founder of the dutch truck brand DAF. In Holland whe call the CVT: Variomatic

[@Dbassman999]

Absolutely. Inventing old solutions. DAF were ahead of their time

[@xXadambXx]

thank you. First time someone show in easy way how it works !

[@avanb8818]

A fantastic explanation of how the CVT operates.Well done producer

[@sungn4512]

great simple explanation of the CVT. Thanks for putting this together

[@Amitkumar-ur2ly]

thank you for such an amazing animation. It really helped me a lot to understand better.

[@rosnipd4229]

Now i knew how its work... simple n straight forward explanation..

[@scootersdenver]

Exceptionally well done visuals. Downright impressive.

[@adeboyegrillo3408]

All I really cared to know was how the pulley sheaves moved towards each other and vice versa. All the animations I watched earlier represented them as shape morphing solids, as if being inflated and deflated by air. Of course that's likely not practical. This video explains that well. I'm both impressed and enlightened, and inspired as well. Now that I know how it works, how do the steel plates of the belt not wear as they slide along the moving sheaves? Don't tell me the whole system is bathed in transmission oil.

[@Retromansite]

Great video and explanation. I find the metal push belt working metal pullies hard to fathom. I gather there’s no slip involved. What happens when the transmission is in neutral or at traffic lights?

[@ivanivy1011]

good video, really helps out people like me that own a car that has a cvt but don't know the first thing about it.

[@mofadin1236]

Best explanation so far...keep it up👍

[@wakeelmohammed2473]

Today only I got the perfect idea about how scooter cvt works! Thank you very much

[@beyondcompute]

Amazing video! One of the most interesting ones I have seen in a while!

[@okterb]

it the best cvt explaniton video i ever seen. thank you so much

[@pardhevini1972]

Thankyou my dear friend... Your video... It just cleared out my doubt... Thanks ... I'd subscribed at that second... Loved it man... Continue to do such job... And these 3d animations.. hats off..!!!

[@chantiyalla9263]

Excellent graphic work and good explanation ,keep going, All the best

[@sanjaysrinivaasmr9750]

could you explain cvt's have constant engine rpm while other transmissions have variable engine speeds?

[@DJDeathRevenant]

They do not, the engine rpm will increase and therefore the sheaves move in reaction changing the 'gearing' and outputting the correct power.

[@mohamedlatheef8643]

Superb video and superb explanation

[@Chook55]

A simple solution to limiting slippage in a high torque requirement would be to increase the rotational velocity of the input side of CVT gearbox and then gear it down on the output side. Sun gears could easily provide a 8:1 step up and step down ratio. Therefore reducing the torque required to be transmitted via the belt by the same ratio. Of course the CVT gearbox will need to run at very high rpm which may compromise the life of the gearbox. Thoughts?

[@jetcarq6048]

much better design than default gearbox, but bad thing that belt can slide at some point when high torque is applied and pulley is moving

[@satibel]

+jetcarq that's the problem of most CVTs

[@Rico24337]

Yes, the concept of the CVT is much more efficient than automatics and manuals. Problem is, all those on the market as of now have issues sizing correctly according to the speed of the engine and driver's foot.

[@genius1a]

Nice Video, good explanation! Just a little thing: at 2:40 (exaktly at 2:57 ) you state zentrifugal weight movement for the pulleys won't work for automobiles. That is not fully correct, because all DAF 33, 44, 55, 66 and all VOLVO 66 and all VOLVO 343 Versions equipped with CVT worked with centrifugal weight as main shifting mechanism. Powered up to 70 hp they worked like a charm in my experience. They had an additional negative pressure switch to make some shifting control possible (for engine breaking downhills, for accelerating with high engine rpm and for overdrive at medium speeds) but they still drive great when this switch mechanism fails completely.

[@ThomasSchwenke-knowledge]

+Maximilian Hacker Yes, but today, you won't find these in modern automobiles ;)

[@lexsoft3969]

+Thomas Schwenke The idea of utilizing centrifugal forces acting on clutch pads is excellent for moving the moveable face of pulley. I wonder why car manufacturers don't apply it anymore for modern cars. Is it unreliable, hard to maintain ?

[@9700784176]

Lucid and precise. Thank you.

[@ohio_dino]

Comments say it already. Very good explanation

[@ashwarya0]

you just earned a subscriber. great video pal

[@briliankamil4594]

very clear explanation, good job guys..

[@avinshetty5363]

LEARN ENGINEERING told to watch ur videos and VICE VERSA... its really worked bro... ;)

[@ThomasSchwenke-knowledge]

Excellent :)

[@vincentlee2460]

Produces lots of metal shavings under constant aggressive driving conditions. Also when full torque is applied, the belt suffers. Belt is driven by friction alone. Still a long way to perfection.

[@stansaju4392]

Good Explanations of the CVT

[@danieldonoso5371]

Thank you for the video, my inglish is not very well but i understand the idea, its look simple and efective as i like, hi from Chile

[@avinshetty5363]

no ur inglish is lit bro.. ;)

[@edwardarakelian8315]

Very well explained. Great work!

[@mchammer5592]

Bahaha , some of these comments are crazy, "I don't like music, you said my favorite word wrong" 😂that's the internet I guess. But this is an amazing video, extremely well done. You've got another subscriber!

[@Teorisma]

How does this conical pulleys increase and expand? Is there an electronic processor that manage them for acceleration?

[@jitendraitankar]

superb animation, keep it up ! thanks

[@ThomasSchwenke-knowledge]

Excellent. Thank you. Please share with friends and family!

[@soldiers303]

This is very good. Understood first time

[@andrewsantopietro3526]

I never would have thought that I would be learning about CVT from a Sim

[@firdausravindar977]

Great job. All the best to you.

[@arandabad1]

Ur teaching ppl alot. You should keep going

[@deluxeassortment]

It seems to me like the sheaves would put a lot of undue stress on the chain compared to the opposing cones of old CVTs?

[@Motorzest]

amazing video! great work Thomas

[@harikrishnan9850]

Very simple and perfect explanation.....❣️

[@twisterwiper]

So all of the power is transmitted by that belt? It would seem that the belt is subjected to lots of friction and wear since it travels up and down between the pulleys? Also the power is exerted on the side of the belt as opposed to underneath like a normal belt/pulley system. How long does a belt last?

[@julioestanislaoskoropada7992]

congrats, very understandable explanation.

[@exxodas]

This is so much simpler than normal automatic transmission

[@eagle___empire3175]

Is it though?

[@DozIT]

Yes, very much so. Manufactures have not figured out how to make a reliable CVT yet. If you are going to reliability, simplicity, and low maintenance manual is the way to go!

[@TactileCoder]

The belt tends to snap off,

[@TheScoutGuyYTPs]

belts tend to slip

[@eagle___empire3175]

Do I even need to bring up the flures on a traditional auto transmission? If you want go go by statistical failure rate CVT are vastly more reliable. Dont just blinded throw out accusations

[@masyantokates1427]

good animation, its make more easy to understand.

[@mathewmclean9128]

Another great video! Thank you, Thomas!

[@joash480]

so when talking about electrical issues like short circuit damaging CVT vehicles like scooters, the only thing to worry about a scooter like all motor bikes is the ECU and not the transmission as they are mechanical? is that right?

[@ellieprice3396]

I agree with the posts that prefer videos without music. The music is annoying, usually much too loud and add nothing to the content. Most are the bump-bump, bumpty-bump type that's extremely distracting. If I select a video and hear this type of music I turn it off immediately and seek another with clear narration and interesting content. mrpete222 is one of the very best that uses no music with his interesting "Jimmy Stewart" voice and useful information.

[@ThomasSchwenke-knowledge]

Hi, excellent. Thanks for your comment. I just like the music and it will still be part of my animations in the future. So, feel free to look for other content. Best wishes :)

[@jeetendrarajput1170]

best cvt explanation

[@motosmercurio6128]

I like the voice and also de quality of the video, its expectacular!

[@Roman-mv3gv]

Thank you. Very clear explanation!

[@sparshmeshram4940]

very nice animation and explanation ...

[@skeetermcswagger0U812]

The way the word 'centrifical' is pronounced by the narrator is very unusual to me.

[@adityaputrairzan8775]

helo Thomas Schwenke What's up? I hope that I will always be healthy, introduce my name Adi from Indonesia, I want to ask, My car uses its CVT transmission technology, so when I stop for about 10 minutes which position do I have to put the transmission panel D? or in N? maybe you can help me answer so that I can prevent even more damage if I am wrong in using Aoutomatic CVT transmission.

[@aarinteich]

excellent tutorial. Thank you. Can I ask; why are these not used in motor boat engines? I would love an answer - I think about it all the time (sadly...lol)

[@MB-lh9xo]

Thank you for explaining how CVT work now I know why so many people hate CVT Because when it comes down to it it sucks it’s a cheap way for people to save money or companies have everyone look at it

[@saurabhwalzade9954]

Best explanation man I understand concept in 3 minute

[@AJ1990.]

Great job. You can tell a lot of effort went into this.

[@HanifEFIMechanical]

Good work air

[@vinaykumar-ce2wj]

Better than all other videos

[@federicomoretto2780]

Great explanation thanks especially for someone who was already familiar with the scooter cvts.

[@tonyhamilton7785]

"The length of the belt must always be the same" So if either the transmission or engine pulling mechanism fails, the belt pops

[@Akyomi777]

yep

[@ujjwalseth5868]

Wow what an amazing animation

[@sparkss4]

Really great animation and clear explanations! One question: what kind of clutching mechanism do CVT's use (how do they handle the engine running while the car is at rest)?

[@chain3519]

If you look at the learn Engineering video, they mentioned that two sets of clutch packs were used on a standard planetary gear set to engage the drive shaft.

[@zilcdy2752]

nice video. simple and concise

[@BobbyL80123]

What prevents the belt from slipping? there are no gears? is it all friction?

[@Amal-qf7ip]

can u please suggest a mechanism for the axial movement of the sheaves?? how is it practically made adjustable??

[@lexsoft3969]

It uses hydraulic pressure which is supplied by a chain-driven pump. This chain-driven pump is driven by transmission input shaft that is connected directly to the engine's crankshaft. So, practically our actions of pressing and releasing the throttle pedal have final effect on the axial movements of the sheaves.

[@futurestig17]

I can't help but ask this: Why do you not have Staff working with you on this KZbin matter so that the channel video output can be far greater? I mean, the video quality is inexplicably great, but every month or so that I check there are no new videos when there should be for such an already so well developed channel. I am saying this for the fact that other channels such as Learn Engineering are great as well(but not quite as much!) and have very good consistency to help me with my matter that is developing a mass of information prepping me for several future individual projects at my High School.

[@ThomasSchwenke-knowledge]

Well, I have to eat and sleep, so it's a matter of "money" :) / KZbin cut alot of money in 2016; perhaps you have heart this from other KZbinrs. So, first, these animations are really hard to make; and, second, I create a lot of animations for other people to pay my rent ;)

[@abhisheklad2621]

speechless..... gr8 efforts....

[@ragulragul2189]

It's really useful,thanks man

[@sriharinandan4981]

Very descriptive. Nice