Continuously Variable Transaxle (CVT) Operation

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Күн бұрын

See the parts of a CVT in operation:
TIMELINE:
0:00 Introduction
0:15 Drive pulley
0:20 Driven Pulley
0:23 Steel push belt
0:30 Input shaft
0:40 Reverse clutch
0:48 Forward clutch
1:03 Output shaft
1:20 CVT operational theory
1:30 Low gear ratio (pulley ratio)
1:55 High gear ratio (pulley ratio)
2:45 MUST SEE! CVT Operational demonstration
2:48 Underdrive ratio (2.6 to1) demonstration
3:00 Overdrive ratio (0.4 to1) demonstration
4:15 Variable ratio and direct drive (1 to 1) discussion
4:50 The eCVT difference
Questions for Teachers:
1. List the three major components of a CVT transmission
2. What is the purpose of the forward clutch?
Use the "," and "." keys to step frame by frame through the video as necessary for the next three questions.
3. Is the CVT shown at timestamp 2.52 in under-drive, direct-drive, or over-drive mode? How can you tell?
4. Is the CVT shown at timestamp 3.29 in under-drive, direct-drive, or over-drive mode? How can you tell?
5. Is the CVT shown at timestamp 3.34 in under-drive, direct-drive, or over-drive mode? How can you tell?
6. What are some advantages of a CVT?
7. Are CVTs used in small cars or larger cars and trucks? Why?
8. What are some disadvantages of a CVT?
9. Tell me one thing you learned or found interesting in this video.
ABOUT US:
Weber State University (WSU) - Automotive Technology Department - Transmission Lab. GM Continuously Variable Transaxle (CVT) model VT25. How a belt-driven CVT Works. Ford, GM, Honda, Chrysler (JATCO), and Nissan CVTs are similar. CVTs allow the engine to operate at the RPM for peak efficiency while increasing and decreasing the transmission drive ratio to change vehicle speed. eCVTs are different and are demonstrated in another WeberAuto video here • Understanding the Toyo...
We teach current vehicle technologies to our automotive students at Weber State University and online. For more information visit: www.weber.edu/automotive
Download the VT25 Range Reference Chart here: www.weber.edu/wsuimages/automo...
Visit my other youtube channel / vibratesoftware to see the amazing NVH app for vibration diagnosis!
This video helps satisfy 2017 NATEF MAST Task A2.C.4. "Describe the operational characteristics of a continuously variable transmission (CVT)", a priority 3 task.
This video was created and edited by John D. Kelly at WSU. For a full biography, see www.weber.edu/automotive/J_Kel...
DONATE TO OUR DEPARTMENT
Please consider a donation to the Department of Automotive Technology at Weber State University here: advancement.weber.edu/Automotive

Пікірлер: 2 900

@MrWilliam.Stewart 4 жыл бұрын

The best explanation of a Continuously Vulnerable Transmission ever.

@porkyV2 4 жыл бұрын

i see what you did there. lol!

@mrmadame28 4 жыл бұрын

Buy toyota you will never have problems with your cvt

@bennettperry4936 4 жыл бұрын

Saying that it's just blind brand loyalty. I've worked on many vehicles and I've seen many Toyotas with failed Transmissions. Yes, they have a lower failure rate then some domestics. But they still fail. The key is maintenance.

@mrmadame28 4 жыл бұрын

Bennett Perry there is no maintenance on toyota cvt

@NiggaGang69 4 жыл бұрын

mrmadame28 lmao thats bs mine blew at 100k pos

@HerculeanPearl 4 жыл бұрын

Very interesting indeed. First time I've seen a CVT demonstration without using a computer-generated animation. Really helps, thanks.

@evergreatest7644 2 жыл бұрын

Doesn't matter how good the animations are, in most cases, they can't replace the demonstration with a physical object. I watched multiple animation videos of Differentials but I can't understand it, watched an old black and white video and now I can make my own differential*. Also, I never realised that gears are just multiple levers. *Not literaly, I meant I understand the working of a differential that good.

@planetphatness 2 жыл бұрын

Anyone with a scooter or moped has this type of transmission

@arduinonewfaq7551 5 ай бұрын

@@planetphatness jaja, and chainsaw tooo... lol any CVT is bigger than motor at scooter or moped

@KevinATJumpWorks 2 жыл бұрын

The great thing about those things is that you use centrifugal forces to change the transmission ratio so that, for example, the motor always operates in a high-power rpm-band. Most non-electric scooters use such a system. You can adjust the target motor rpm by changing the weights of the centrifugal assembly.

@actuallyn 2 жыл бұрын

yes but you are forced to cruise on higher rpm (at least on scooter vs motorcycle) and if you want to change it’s “personally” again, you have to tear it down and modify it

@keesanker4241 2 жыл бұрын

@@actuallyn Luckily in a scooter it takes 10 minutes maximum to change it

@pmo5821 2 жыл бұрын

In cars it uses hydraulic pressure to vary the cones, not centrifugal effects.

@bullmooseathletics 5 жыл бұрын

This is one of the best, most concise, clear, and quick explanations of a very complex assembly. Great job

@AramK 6 жыл бұрын

Out of everything I’ve seen so far, this video explains the best. Thank you.

@WeberAuto 6 жыл бұрын

Thank you!

@SCD-BOY 6 жыл бұрын

I agree

@Fruitysfaction 6 жыл бұрын

Even in 2018 one of the best videos about this subject.

@davidjames666 5 жыл бұрын

You have something against cute kittens?

@shawnlynch9826 5 жыл бұрын

@@WeberAuto should have used a psi regulator, other than that top notch man

@Landrew0 10 жыл бұрын

Of all the videos and animations I've seen, this is the one that makes the most sense to me.

@HelloKittyFanMan. 10 жыл бұрын

At least... videos *including* animations.

@SergiuM42 9 жыл бұрын

Agreed. Great video.

@krankinkogs 4 жыл бұрын

where is the cute cat?

@carlossansberro1177 2 жыл бұрын

I was -thinking- how to explain cvt to a friend. Didn’t google it, didnt speak out loud, I just thought about it. And now is the second video on KZfaq suggest list. And I think that’s very good service

@jrambo7495 4 ай бұрын

Same thing exactly with me! I was thinking about it in my head when I was driving my new car but didn't say anything out loud. I didn't do any searches on Google or KZfaq regarding that either but lo and behold this video just popped up on my feed.

@Opalivian 2 жыл бұрын

I love buying the most reliable Nissan that always appreciates in value. It is such good quality and has so many features. - Literally Nobody

@WeberAuto 2 жыл бұрын

Lol. Thanks for watching

@scottallberry6713 2 жыл бұрын

my nissan altima I 6 years old and still pulls strong. wonderful transmission

@takuyatanaka5587 2 жыл бұрын

These days it’s Subaru that has all the cvt failures.

@kyleroberts6472 2 жыл бұрын

Any my little 06 Prius with 274k miles is still going strong

@breakfast7595 2 жыл бұрын

I mean it really depends on how you drive and the specific CVT. I personally don't like CVT transmissions (especially the fake shifting). But some people can get away with it if they drive like a grandma and get improvements in efficiency. However it's not worth the tradeoff to me. I'd take an auto, manual, or just a flat out electric vehicle before a CVT.

@The8BitGuy 11 жыл бұрын

I would have liked to see a close-up of that belt. I'm curious what it is made of that it can withstand the stresses it must endure both with the tension and with the bending it probably deals with between those cones.

@peterjackson2625 3 жыл бұрын

The belt is not in tension. It s called a "push belt" as the segments on the driving side push the driven pulley. Not pulled as in a fan belt.

@psychiatry-is-eugenics 3 жыл бұрын

There is a video that shows a belt taken apart

@IsaAnsharullah 3 жыл бұрын

never thought we would see you here 8-bit guy :D

@omniyambot9876 3 жыл бұрын

What the hell give me some commodore

@spol1622 3 жыл бұрын

@@peterjackson2625 although it still relies on friction to work, just like all v-belts do.

@JQuintero189 8 жыл бұрын

this is what KZfaq should be for. .. learning, not pointless videos. with that being said, very informative and well demonstrated.

@WeberAuto 8 жыл бұрын

+Janloy Quintero Thank you!

@russellr4229 5 жыл бұрын

@TheReagorBrothers 5 жыл бұрын

Janloy Quintero you should hire some help to just search the videos that you’d like to watch. Obviously you’re much too busy to type.

@iggy082 5 жыл бұрын

Janloy Quintero everybody has diferrent interests. that's what makes us unique. accept it and stop being an elitist prick!

@TheReagorBrothers 5 жыл бұрын

iggy082 I don’t think you know what you elitist means.... I was referring to your previous comment about what your expectations of what KZfaq should be. It’s not just for educational videos, it’s for whatever you want to post. Your comment made it sound like everyone that posts anything that you don’t think is educational is doing something wrong. I love you buddy and I know we can get through this.

@johnsonx2426 4 жыл бұрын

And with multiple languages in the captions, guys you are amazing.

@LuisRamirez-ln3cj 4 жыл бұрын

Wow. This is the video I needed. A CVT in action. It doesn't get more clear or simple than this. Thanks for this video. Amazing.

@T34theAmericanheavy 2 жыл бұрын

It can, go carts use this system

@Ratlins9 4 жыл бұрын

This is by far the best video, clearly showing how the cvt transmission operates. Great job

@WeberAuto 4 жыл бұрын

Thank you

@Soma-7662 8 жыл бұрын

this is the best demonstration of CVT. thank you

@WeberAuto 8 жыл бұрын

Thank you!

@TheTexican05 6 ай бұрын

For any CVT owners watching this, change your CVT fluid EARLY and often, using the dealer supplied OE fluids. I recommend every 30-35k miles for most drivers. Some OEs state longer, but they aren’t the ones paying for your $5k USD transmission if and when it fails. Keeping clean fluid with the correct formula and viscosity is about the only thing you can do to try and prolong the life of these things. Honda and Toyota, two of the most highly regarded brands for reliability, have had a hell of a time producing a CVT that can consistently make it to the 100k mile mark. Nissan’s CVTs…I won’t even comment on here. Buyer beware when you’re shopping for your vehicle. CVT is becoming the norm behind 4-cylinders, and it’s still a mixed bag with an unproven record in 2023. Thank you guys for putting this video together! I will share it with friends and customers to help them better understand. 🍻 ✌️

@Goyxrd3 2 жыл бұрын

Thank you for actually showing how a cvt functions! Most videos just explain without demonstrating!

@crochetgottaloveit 8 жыл бұрын

This is so cool! I always wondered what a CVT transmission actually looked like! I was looking for an exploded diagram but I found your video instead. Now I know why I never feel the gears shift in my automatic now. Thank you for producing this video. :) Great technology!

@WeberAuto 8 жыл бұрын

+Lee Ann CrochetGottaLoveIt Thank you!

@cesarssntos4436 8 жыл бұрын

quien eres

@scottgolden2766 6 жыл бұрын

Snowmobile's have used those transmissions for eons.

@scottgolden2766 6 жыл бұрын

grandpa5x Pulliam I'm not saying that it's a good or bad idea, I'm just saying it's been around for a long time. Non steel belts are more affordable than steel belts

@xanamontana5410 6 жыл бұрын

grandpa5x Pulliam thanks dude ,you just helped me make up my mind about getting the Dodge Caliber . I think I'm gonna stick with the original transmission cars instead of this new one that I don't know much about

@NGH99999 5 жыл бұрын

What a perfect demo of the CVT. Thanks for this. My '98 Civic has a CVT, and over the last 20 years I've been very happy with it. Definitely an evolutionary leap in trans design.

@WeberAuto 5 жыл бұрын

Thank you

@frankramirez86 5 жыл бұрын

The civic 1998 doesn't have CVT, it has a 5 speed automatic transmission 👎

@Taw3eyaa 4 жыл бұрын

شكرا جزيلا شرح ممتاز القناة الوحيدة التى شرحت عمل قير السي في تى بشكل واضح

@JJDaMan808 4 жыл бұрын

Thank you for explaining how cvt works and with an actual live example as well. Video was short and to the point!

@xn7331 5 жыл бұрын

Wow, this is the first video I've watched specifically on how a cvt works but I am glad I chose this one. That was so informative and I'm so impressed by that transmissions range of motion

@WeberAuto 5 жыл бұрын

Thank you

@superturboawesome1 7 жыл бұрын

I know the guy who held the first patent on a fully functioning CVT and demonstrated it at a World Fair a long time ago. I don't remember what year and he may have passed away now, he was already quite old when I met him in 1999. Somehow his design worked without pulleys and belts and was supposed to be far more mechanically efficient and reliable than the belt design. He had a treadmill with a manual CVT in his apartment as his remaining piece. I struggled to understand the design, and had been attempting to invent one myself for use in heavy duty situations. The man was a genius. The belt driven designs initially were not efficient because of the friction to create gear ratios and reliability was an issue. I haven't been following the auto industry as much for the last 20 years, but I think those are still the same hurdles.

@WeberAuto 7 жыл бұрын

Thanks for your feedback! Very interesting!

@ianrasmussen5380 2 жыл бұрын

I know this comment is 5 years old, so I apologize, but would you perhaps be thinking of something called a "toroidal CVT"? I remember seeing a video of it a while back, it's used for much heavier duty situations. Doesn't use a belt at all, instead it uses some kind of friction from spinning wheels, so it's much stronger. I think the Japanese military's main battle tank uses one (which means it can go just as fast backwards as it can forwards, which is neat).

@superturboawesome1 2 жыл бұрын

@@ianrasmussen5380 good evening, I just googled a toroidal cvt and although this is more on par with what I originally described, it isn't quite the same. Bill Glazier's CVT employed a lot of sprag shafts, or sprag clutches, and to this day I still haven't been able to "crack the code" and decipher how he incorporated them into his design, but I think there was still a lot more to it, unless the toroidal video I viewed was an oversimplification. Cheers to you

@Veter808 4 жыл бұрын

Thanks for the video! You are the first and only with a detailed video review!

@MegaGuitarpicker 4 жыл бұрын

I had one of these on a mini bike 45 years ago. Worked pretty good.

@spaceghost8995 2 жыл бұрын

Totally different design.

@013fai 9 жыл бұрын

Thanks, you've done what the other videos couldn't, which is to get me to understand what's going on with CVTs!

@WeberAuto 9 жыл бұрын

fa va Thank you!

@SeraphXT 5 жыл бұрын

Finally I understand how these things work. Thanks for the excellent demo and visualization of the workings!!

@MacTechG4 3 жыл бұрын

They don’t work….for long, that is…

@jerryg50 3 жыл бұрын

It is amazing how such a thin and small belt can transfer enough force to drive a vehicle that weighs thousands of pounds. These transmissions are amazing that they work so well. I realize there are long term reliability issues with CVTs.

@WeberAuto 3 жыл бұрын

Thanks for watching

@Jeremy.Bearemy 2 жыл бұрын

Its interesting how it's all designed. Part of the reason the belt can be so small is because it's spinning much faster than the axle. If the wheels are applying hundreds of pounds of force to the ground during acceleration, maybe there are only a few dozen pounds of force on the belt depending on what the reduction is. But all the energy going to the wheels must come through that belt, you're right. It just spins around a lot more than the wheels in order to convey that energy

@TheKnobCalledTone. 2 жыл бұрын

Long term reliability issues boil down to the manufacturer, as well as how the individual transmission is serviced by its owner (or owners). Honda CVTs can last a very long time as long as the CVT fluid is changed on a regular basis, using the correct OEM Honda fluid. On the other hand, Jatco (Nissan's transmission OEM) seems to use rubber bands in their CVTs, and no amount of maintenance can protect against that.

@thx1138guy 2 жыл бұрын

@@TheKnobCalledTone. The steel belt slips and breaks because of inadequate pulley pressures. It has nothing to do with the strength of the belt.

@samuelbekoe2354 4 жыл бұрын

This was really helpful, I now got the overview of a CVT.

@MadCarTK 2 жыл бұрын

I've only driven a GM CVT but it's was the most soulless thing I've ever experienced. It took every single ounce of joy out of driving and I honestly thought the car was broken until the dealer explained that's just the way it worked. If other manufacturers are are as bad then I will continue to only buy older used cars.

@cyrusthegreat3081 2 жыл бұрын

I bought Mazda for this very reason! They still use gears

@unwantedscrub 2 жыл бұрын

Just buy a manual. Subaru, Honda, Mazda etc. Problem solved.

@troyjollimore4100 2 жыл бұрын

You're going to LOVE Electric, then.

@MadCarTK 2 жыл бұрын

@@troyjollimore4100 Would love one but I don't have the money and I don't like care much for Tesla as a business.

@troyjollimore4100 2 жыл бұрын

@@MadCarTK Didn't specifically say Tesla. So what don't you like about CVT that isn't echoed in an EV drivetrain?

@songth1083 5 жыл бұрын

This is very straightforward. After seeing this, I understand why there are so many issues with CVT. CVT is not built for heavy torque and most likely will not last long. If something is wrong, it will be catastrophic. Avoid CVT at any cost.

@Aliencreep369 5 жыл бұрын

Its a old video subaru as the chain drive instead of belt drive make it better in alls the way.

@thinkkops853 4 жыл бұрын

Toyota and Honda pretty much perfected the CVT, especially Toyota, they have been using them on they’re Pruis’s for over 20 years now, and they’re pretty reliable cars.

@TKOfromJohn 2 жыл бұрын

It's new technology, anything new will take time to perfect. And they've been making leaps and bounds in the past decade with CVT. I had an 07 caliber that had a CVT and I was worried it would just stop working one day with how bad it ran.

@jackwhite1742 2 жыл бұрын

Almost all vehicles run a CVT now.

@endutubecensorship 2 жыл бұрын

@@thinkkops853 Is this why Honda ATV's use geared transmissions?

@jacobreezyfpv6287 2 жыл бұрын

I just had my mind blown away wow I didn't even think something like this would be possible love the video good stuff to know about

@MrJommins 2 жыл бұрын

That was extremely well done! thank you! I never understood how a cvt transmission worked.

@marcelogouveia9614 5 жыл бұрын

Best demo ever. Thank you gentleman!

@jhyland87 6 жыл бұрын

Thats awesome. I love working on cars, and im always blown away at the brilliance behind the transmissions. Mainly the automatic transmission.

@WeberAuto 6 жыл бұрын

Thanks for your feedback!

@radicalron65 3 жыл бұрын

....well then stick with basic automatic transmissions cuz the CVT is not perfected to this day absolute garbage and trouble within Forty-Eight thousand miles.....

@pubuduweerakoon7174 3 жыл бұрын

Best explanation with clear and correct language. Thanks !

@caterpillarslim1288 2 жыл бұрын

Thank you for sharing this! I knew how a continuously variable transmission works on a Polaris four wheeler but I was curious how it worked on a car. This video told me what I wanted to know!

@83041562 7 жыл бұрын

Your videos are very good and informative. Thanks.

@WeberAuto 7 жыл бұрын

Thank you!

@sivabalaji5341 10 жыл бұрын

a very good explanation and easy to under stand thanks alot

@swimmerthon 4 жыл бұрын

What a brilliant explanation and demonstrating. Thank you!

@walkeronegaming 4 жыл бұрын

Always wondered how these worked. Thanks for sharing

@crazytech5755 3 жыл бұрын

*And the best part about a CVT is that it costs around 8-9 thousand dollars to get it replaced when it lives its very short life, as much as your cars worth*

@crazytech5755 3 жыл бұрын

@Gods Man Wrong idiot, it's 8-9k.

@vacuumlover1 3 жыл бұрын

Actuallllyyyyyy they’re 2-3 grand for most cars and cost maybe 1 grand to put in. But don’t take it from me I just do this for a living 🙄

@trumptookthevaccine1679 3 жыл бұрын

My cvt died and it was quoted at 5k including labor. Thankfully I reported shudder before warranty ran and they covered it. I sold it right after.

@Neildo430ci 3 жыл бұрын

They should team this trans up with Nissan's the mid 2000's 3.5L.

@robertbigler7743 2 жыл бұрын

@@vacuumlover1 Hi, Thanks for posting... Do you see any current improvements in CVT's? I imagine they'll get better as the technology improves, but Toyota and Honda are starting to use them, and this disappoints me.

@abrahimyehia9546 7 жыл бұрын

great videos buddy really learnt alot mate appreciate it.

@WeberAuto 7 жыл бұрын

Thank you!

@leocolorado5 3 жыл бұрын

Fantastic demonstration of how CVT works

@paulmorphy6638 4 жыл бұрын

I just had to add to all the positive reviews that this really is the best video explaining the CVT and I've see 4 already. Great job.

@phazonxl 5 жыл бұрын

My 05 Prius is at 270,000 miles and I've towed packed 5x8 u haul trailers over a 1000 miles. The car still drives and accelerates fast with no slipping or transmission problems. Toyota makes this CVT stuff a lot better from what I've heard.

@kenjohnson7214 5 жыл бұрын

The Prius has an eCVT. It doesn't have a belt like a CVT.

@Ichibuns 2 жыл бұрын

The eCVT is near bullet proof. Luckily, you don't have a belt driven. You have a planetary gear set and an electric motor. Possibly even more reliable than a traditional automatic

@chadgdry3938 7 жыл бұрын

outstanding demonstration.. thank you for this..

@WeberAuto 7 жыл бұрын

Thank you!

@mayhanamin3538 2 жыл бұрын

This video makes me apreaciate the regular geared transmissions even more

@Receipt 2 жыл бұрын

Perfectly clear, and well demonstrated, thanks.

@intjonmiller 7 жыл бұрын

Greetings from Riverdale! :) Just found this channel. Definitely subscribing because I hope you're still putting out videos as good as this one. :-D

@WeberAuto 7 жыл бұрын

Thank you! Hello from Weber State University Automotive. There are 90 more automotive videos on this channel with many more to come. Have a great day.

@daddyo6493 3 жыл бұрын

Eee

@ricebowl3 8 жыл бұрын

Awesome demo

@WeberAuto 8 жыл бұрын

+ricebowl3 Thank you!

@matthewh8005 2 жыл бұрын

Brilliant! You made this insanely simple to understand.

@abhishekbhide86 3 жыл бұрын

Best ever demonstration of CVT transmission :)

@arkansasmountainman 5 жыл бұрын

When I was a teenager, in the early '60s, I had a Rockford motorscooter that had an automatic transmission based on this principle. The faster the engine turned, the V belt went outward on the engine side and in on the drive side. No shift points just smooth starting and driving. It worked with weights and springs and was base on centripetal force on everything. Not nearly as complicated as this but very similar. As the RPM increased on the engine shaft, weights were pushed outward on the variable pulley and the V belt moved closer to the spindle, this pulled the other end of the V belt into the variable pulley on the wheel. A complete transmission rebuild consisted of replacing a very easy to access V belt.

@dan-5678 2 жыл бұрын

You know exactly what year it was or anything? I'd like to look that up cuz that sounds like an interesting way of doing things

@dawnmaster68 2 жыл бұрын

do you one better the first car to use it was designed in 1958 as the DAF Variomatic en.wikipedia.org/wiki/Variomatic

@flinch9748 2 жыл бұрын

@@dawnmaster68 en zo is het! Voordat die Amerikanen weer met de eer gaan strijken! Van Doorne’s Automatische Transmissie!

@darkrulier 10 жыл бұрын

humm preety simple concept, can you give an estimate on how many miles the steel belt last on a normal car? Also what kind of lubricant does it use?

@DM-hd4xm 5 жыл бұрын

Very good explanation and demonstration as well, thank you.

@sabiqoon 3 жыл бұрын

Best CVT explanation across KZfaq. Many thanks for your effort sir. I have subscribed.

@WeberAuto 3 жыл бұрын

Thanks and welcome

@dyllman98 4 жыл бұрын

This reminds me of those old go kart torque converters..they are also CVTS

@GodsMistake 7 жыл бұрын

I remember my mini bike, forty years ago, had one of these. lawnmower engine, CVT, bit of petrol and off you go.

@WeberAuto 7 жыл бұрын

Yes, it uses the same idea

@spol1622 3 жыл бұрын

@@WeberAuto there are industrial machines at least from 1960' s that use this same principle, except with ordinary v-belts. All -metal v-belts is the only new idea in the CVT that I see.

@saqibnawaz5139 4 жыл бұрын

Very meaningful demonstration of continuous varying transmission gear ratios,quite ingenious system

@prakashsam6968 3 жыл бұрын

The best demo of CVT sir, well understood thank you.

@kanoamisawa9901 2 жыл бұрын

At first I didn’t like the idea of a CVT and heard countless horror stories about them. Now after having one I couldn’t be happier. I get great performance and as it varies going up and down in speed it’s as smooth as butter. I will always choose CVT now in a car. In a truck no way but being an average driver who doesn’t care about speed I’m happy with it.

@thathondaguy9670 2 жыл бұрын

They are lightning fast transmissions and time will only make them better

@cai9199 2 жыл бұрын

Smooth? Mine must be messed up or maybe it’s just cheap. In my Chevy spark, at around 45 MPH I lose all power for a second while it changes into a higher “gear”

@ram-ham 6 жыл бұрын

Thanks for the explanation! Best description on KZfaq! Driving a CVT is the saddest thing ever and it seems everyone is using them. I guess I'll be driving manual for life.

@WeberAuto 6 жыл бұрын

Thanks for your feedback

@5punkybob 3 жыл бұрын

Thank you for this demonstration. CVT is a fascinating transmission.. i knew the theory but never actually seen how it works.

@WeberAuto 3 жыл бұрын

My pleasure

@HPG747 4 ай бұрын

Excellent presentation. Thanks for the mechanical demo.

@Fau8 3 жыл бұрын

Перед экзаменом по геодезии самое время узнать как работает вариатор👍

@lol4ik784 3 жыл бұрын

Скажешь как сдашь

@autovozstyle6924 3 жыл бұрын

Удачи

@alikstr 3 жыл бұрын

ну что, сдал экзамен?

@user-qw1lp1vy7y 3 жыл бұрын

Ну как экзамен?

@autovozstyle6924 3 жыл бұрын

Ну что там? Народ волнуется))

@Polynuttery 8 жыл бұрын

Wow, totally great video... just would have like to have seen the change take place a lot more slowly.

@WeberAuto 8 жыл бұрын

+Rob Ward Thank you! good idea.

@aaronlajiness72 2 жыл бұрын

I had a 1984 Toro lawn tractor that had this very same setup. The transaxle only had forward and reverse, there was no gears, or speeds. The clutch was the control - the further you let the pedal out, the faster the tractor moved. If i remember, the more tension in the idler (driven) variable pulley, it would open up making the driven center smaller, and directly changing the speed the transaxle was spun. It had a really wide V-belt, the whole mechanism looked just like this.

@padyyiustanding 4 жыл бұрын

Great explanation I never understood the ratio means but after this demon I understood. Thx man

@east_tex_will8264 5 жыл бұрын

I see the comments, and I understand the reasoning. My wife drove a 2010 nissan Altima for 160k miles before trading it in with no transmission issues ever occurring. Maybe we were lucky.

@ohger1 5 жыл бұрын

You were..

@dueyjones4369 7 жыл бұрын

I'll stick to the clutch change every now and again vs this. it's very good for a powerband but not for me. Thanks for the demo.

@WeberAuto 7 жыл бұрын

Thank you for the feedback

@radicalron65 3 жыл бұрын

Powerband ? you're right about the clutch though cuz this video is 10 years old and these junk ass transmissions still aren't perfect to this day....

@qdllc 4 жыл бұрын

Wow. Thanks for the demo. Never saw one in action.

@ndvsss1 5 жыл бұрын

Great demo. I can finally understand how my car works. Thanks.

@MaynardGKrebs-gv4vy 5 жыл бұрын

Start saving your money because you WILL have problems with it. Better yet, trade for a Toyota.

@MetaView7 7 жыл бұрын

Do you have a video on the latest Subaru CVT? I can't find any using the search button. I am interested in comparing their belt construction vs this push belt method.

@WeberAuto 7 жыл бұрын

Not yet, but I hope to soon

@MetaView7 7 жыл бұрын

Thank you

@RCTPatriot75 5 жыл бұрын

I'm surprised the cvt didn't break under the torque of the air ratchet

@mynaimrie 5 жыл бұрын

🤣🤣🤣🤣🤣truth🤓

@weragewr828 4 жыл бұрын

With any new tech it takes time. They are getting better engineered every day. F1 banned them because they are to good but expect performance cars of the future that are non electric to use this as they are able to handle higher loads. They are faster than any other transmission system when it comes to drag times.

@thitran2098 4 жыл бұрын

Thats a drill i think

@dieselgeezer18 4 жыл бұрын

@@weragewr828 CVT transmission can't handle high loads for long periods of time. They break down

@dieselgeezer18 4 жыл бұрын

The rachet is much less powerful than an engine. It can handle that load easily

@115zombiees 3 жыл бұрын

Always wondered how they worked, Got this in my audi 110k miles never had an issue good stuff👍

@siavosh330 Ай бұрын

thank you for best explanation I have ever seen aout CVT.

@alanmartinez488 7 жыл бұрын

Great for mopeds... weak for any horsepower... but, they will get better as time goes on. Personally, I'd run to the hills and use a nice conventional transmission.

@WeberAuto 7 жыл бұрын

Thanks for your feedback!

@sliderdrago8189 5 жыл бұрын

Are you a mechanic?

@lackyparker7799 5 жыл бұрын

Agree

@MacTechG4 4 жыл бұрын

Agreed, manuals rule! Save the Manual!

@deanagoes2791 4 жыл бұрын

Ilove my cvt on my moped 😘😘

@joevignolor4u949 5 жыл бұрын

The belt is actually an assembly with about 400 individually stacked elements and something like 9 or 12 ring straps to hold it all together. Here is a video showing how it's constructed: kzfaq.info/get/bejne/hs-nhbiXq6vHZZ8.html

@WeberAuto 5 жыл бұрын

Yes it is, that is a video I made 2 years ago. Thank you

@zaibdarbaloch4533 3 жыл бұрын

Its about 399 elements

@Fthrof7 4 жыл бұрын

Thank you - best video explaining CVT!!

@ricardofelippe834 4 жыл бұрын

Thank you Prof. It's a very good explanation. Great. Thanks for the guy too. Congratulation.

@tanayagarwal6670 4 жыл бұрын

So does overdrive happen when car runs on higher gears?

@timothylloyd4625 2 жыл бұрын

You can think of the CVT part of the transmission as a variable overdrive/underdrive selector for each gear on the input shaft, adjusting as needed to provide the optimal gearing for the driver's input, the engine's power band, and the currently selected gear. An example is if at the lowest CVT gearing for gear 3 is 0.9:1 and the CVT can adjust by 0.2:1 then the range of gear 3 is 0.9-1.1:1.

@Johngengelbach2 4 жыл бұрын

I noticed my 2020 Honda Accord has the CVT, it's interesting how it works. It seems like that's what the new cars are going to.

@thinkkops853 4 жыл бұрын

John Gengelbach Thank god you didn’t get a Nissan, would’ve been the worst decision you have made in your life lol

@OverG88 3 жыл бұрын

Good luck with that crap buddy!

@DavidJones-mv5qk 3 жыл бұрын

Yeah you're going to regret it. Had mine replaced several times times because CVTs are terrible.

@zacharyayaga6661 3 жыл бұрын

This is a very unique explanation 👌. I love this channel already

@hroman5 2 жыл бұрын

Better to see it actually working! Thanks!

@fostytou 5 жыл бұрын

Great video! It would've been neat to see the air pressure regulated a little better and see a slower transition in the ratios.

@WeberAuto 5 жыл бұрын

Thank you, I agree

@fearofthedark1229 3 жыл бұрын

Самая лучшая демонстрация работы трансмиссии!!!

@davefikel4359 4 жыл бұрын

Good videos guys! Right amount of teaching without useless fluff!

@joselezcano1391 4 жыл бұрын

Awesome, is the best explanation ever, hi from Argentina!!!

@doenjangstew4438 5 жыл бұрын

CVT is the best and smooth in city urban area.

@WeberAuto 5 жыл бұрын

Thanks for your feedback!

@mr.anonymous3103 4 жыл бұрын

At this point with the current technology I would recommend to either go with a normal automatic or a hybrid with the e-cvt’s since they are more reliable than a normal cvt.

@gutadin5 4 жыл бұрын

Is Honda cvt reliable?

@thatroarboi2788 4 жыл бұрын

@@gutadin5Toyota makes the best transmissions, cvt, traditional automatic, and standard. they're built by Aisin. however, in all honesty for Honda, yes and a little no, Honda makes their own engines and they put out a lot of power sometimes with very little displacement as low as 1.5 liters, and around 180 hp, paired up with their built in house CVTs, they're weak to handle all that power and they may fail sooner. hondas traditional transmissions are also built in house, and they too are a little on the weak side too but will outlast their cvts, with normal driving. and if you can drive a standard transmission, you dont have to worry about nothing, honda builds them really strong. that being said, Nissan has the worst cvt and traditional automatic transmissions they are built by Jatco, and history shows those transmissions are trash, some start failing at early as 50k miles.

@thatroarboi2788 4 жыл бұрын

@@gutadin5 also i should add, if your transmission, (cvt, traditional automatic, or standard i.e manual) has less than 60 thousand miles its safe to change its oil out, and you should at every 60 thousand miles at least. take care of them and they shouldn't be a problem, also dont slam on the gas all the time.

@gutadin5 4 жыл бұрын

@@thatroarboi2788 I'm thinking of buying my wife a Honda City cvt, it's a subcompact and this Honda model is in Asia, Honda City, this model is not a available in the US.

@thatroarboi2788 4 жыл бұрын

@@gutadin5 i see, do your research,check where the car you're looking at was made. a quick Wikipedia researching says japan assembles them in Yorii, Saitama. preferably hondas made in Japan are the most reliable. cvt or not

@russzandbergen2021 2 жыл бұрын

Thank you ! VERY INFORMATIVE.

@blakejanischh3091 2 жыл бұрын

Well explained cvt action and demonstration.

@algrayson8965 4 жыл бұрын

The principle of operation of the automotive CVT is easily visible on a gas golf car or snowmobile. They have open CVTs using rubber belts. They operate by the same principle. Of course automotive CVTs use steel block belts running in oil inside a sealed case. They are hydraulically operated and computer controlled.

@mrofnocnon 4 жыл бұрын

And just as weak

@jeremypilot1015 2 жыл бұрын

@@mrofnocnon True but it takes 15 minutes and a couple hand tools to change the belt on a snowmobile.

@mrofnocnon 2 жыл бұрын

@@jeremypilot1015 True but a complete rebuild or replacement gearbox for a car.

@onajurecjhay1 7 жыл бұрын

about how long does that belt last??and how do i know when i need to replace it??

@WeberAuto 7 жыл бұрын

the vehicle will quit moving when it needs replacing. Thank you!

@JomsF 4 жыл бұрын

@@WeberAuto holy smokes

@garyr7027 4 жыл бұрын

Great demonstration.

@snakesoffgcc 4 жыл бұрын

very beautifully explained.

@destruxandexploze2552 3 жыл бұрын

Awesome, but you forgot about the “fails constantly” part, all Nissan’s have it and are required to have it.

@c4prlm4st3r 3 жыл бұрын

The stepper motor?

@destruxandexploze2552 3 жыл бұрын

@@c4prlm4st3r No, the Nissan engines are good. But all their CVTs are crap.

@c4prlm4st3r 3 жыл бұрын

@@destruxandexploze2552 am using cvt also & just got p1777 error.

@destruxandexploze2552 3 жыл бұрын

@@c4prlm4st3r Oh, well they’ll say you need a new transmission at a shop but there’s a video showing you how to change the stepper motor.

@c4prlm4st3r 3 жыл бұрын

@@destruxandexploze2552 exactly. The shop that help me scan and clear dtc code said they not selling any stepper motor. But they do have use transmission if i would like to change it. I will go for same option as you. Change the stepper motor.