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.
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.
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.
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
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. 🍻 ✌️
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 RUclips suggest list. And I think that’s very good service
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 RUclips regarding that either but lo and behold this video just popped up on my feed.
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.
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.
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
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.
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.
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.
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.
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).
@@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
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.
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
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!
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
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
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.
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
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.
....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.....
*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*
@@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.
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.
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.
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”
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.
My ex drove a Nissan Micra CVT and i LOVED driving that thing around town! In sport mode it took off like a scolded cat and it absolutely howled! It was HUGE fun! The little old lady who owned it previously had actually covered up the sport mode button with tape and had put an X on it. She'd told my ex that it was broken somehow and not to use it. But nope! It worked perfectly! Hit sport mode and floor it and the engine would just sit in the power band. The car was so nimble & sorted that it'd embarrass all sorts of cars that just couldn't accelerate and corner like that beat up old Micra! It was like a kart for grown ups! 😆
@@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.
The hybrids with the planetary system are brilliant. They get infinitely variable ratio and no reliability issues in principle, and extremely simple mechanics
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.
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.
I think the CVT design is so cool. It’s so complex but so simple. I love driving a CVT vehicle. I really enjoy it’s rubber band effect when accelerating.
@@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.
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.
@@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.
@@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.
@@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.
@@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
This means you can accelerate while maintaining the same rpm to stay in the power band. But doesn’t this make it really weird? I mean the engine sound will stay the same while you’re gaining speed
Yes that's how it works. It's kinda weird but auto transmissions are weird compared to manuals, anyways. It's kinda like a moped but when you put your foot down the ecu lets the engine rev higher or when you're just cruising the ecu tries to keep the rpm down as much as possible.
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!
Спасибо, всё очень наглядно и понятно. Лучше уж механику брать. Но за вариатором будущее, с развитием технологий и новых материалов, они будут на всех машинах.
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: ruclips.net/video/PiwRUfFEc5k/видео.html
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.
I just bought toyota with CVT - and during research there was even no one bad opinion about that. They develop it more than 25 years. Hope it will work wothout issue.
Cvts are great for lighter vehicles like atvs and side by sides. You don't mind so much that the cvt is kinda loud in those type of machines. It makes those type of vehicles very responsive to throttle input. From what I have seen for automotive applications, it really inhibits performance. It might be quite fuel efficient, but its not nearly as reliable as a normal auto transmission and acceleration is painfully slow.
bigger pulleys, sheaves, and an appropriately size (this one is way under what should be used, and is not much bigger than the one on my fourwheeler) belt would make quite a bit of difference. more power could be moved, coupled with a higher ratio and more aggressive tuning for the cvt, and would result in much better performance.
It would have been cool having this on a catapult tensioner in the Middle Ages, as you crank it winds up fast at first, then more and more slower as it gets tighter and tighter....
Great demonstration! IMHO, steel belt is better than a chain, because it is capable of transmitting a "pushing" effort, not just "pulling", like a chain.
Practically what to expect from a CVT Transmission: - Delay or lag throttle response from a stop acceleration (hazardous when making a left turn at a junction). Delay or lag throttle response for clutch to grab when going to reverse (fellow motorists have to wait on you). - Sooner transmission fluid & transmission filter change intervals. If you a Do-It-Yourself, drain and drop the pan, change out the trans filter, clean out the magnets, add new and correct trans fluid with the exact same amount of old fluid that came out, damp your new trans filter with the new trans fluid, and torque everything to specs. If you're a Go-To-Dealership, than you can only hope IF your fluid is actually changed or did you pay to just have your car sit? And the magnet clean & filter change thing with the dealers, forget it! Best case scenario is just a fluid flush. - Metal chain (belt) constantly moving & rubbing up & down along the inner sidewalls (variator) of two pulleys. Let's see if most CVT can handle up to 200k miles that most standard automatic transmission could without repairs except for fluid maintenance and at normal driving stress. Only time could tell!!! I think there's a reason why some CVTs are discontinued on a same model vehicle platform, for instance, an Audi A4. - Low rpm at cruising speed (saves fuel). So does an automatic or manual transmissions with 7 8 9 10+ gears could cruise at low rev-per-minute as well. - Less cost & parts to manufacture saving auto maker companies manufacturing costs. As a result increases their profits. How about you as a consumer? Take 2 vehicles with equivalent comparisons except for one is equipped with a CVT transmission and the other with a standard automatic. Does the vehicle with a CVT selling price less, more, or same? Even though a vehicle with CVT costed less to manufacture. Do the same comparison between vehicles with a 9 speed and a 6 speed automatic transmissions. I reckon the answer is cost doesn't change for the consumers. Just more profit for the auto companies.
Не. Тут система такакова что в зависимости от оборотов подается разное давлние жижи. Это у механника компрессор с одним давленем. Вот в зависимости от давления и происходят плавные изменения передаточных чисел на валах. Нету ни пинков ни подергиваний..
@@КонстантинГалимов-д5ы я думаю Виктор другое имел ввиду.он хотел увидеть как это происходит плавно а не резкое переключение.а мужикам можно было просто собрать пневматику с распределителем(ручного управления)и дросселями, тогда было бы все плавно и наглядно))))как то так)))з.ы. А я на реверс зашёл посмотреть)))
Here in the Philippines, almost all brand new cars/SUV's (Toyota, Honda..ect) have CVTs. Some have already reached 10 years or more and still display excellent performance. Proper maintenance care and responsible driving practice are the key factors for CVT to last..❤
In 2021 it is well known to some that these transmissions are junk but manufacturers still use them because they cost a lot less than a standard automatic and they usually last through the warranty.
I'm no engineer but looking at that system it seems no wonder people complain about them giving problems in their cars. Some people say Subarus feel a bit terrible on steep grades.
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.
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.
@@hazza2247 Actually with the planetary gear system of the Prius you do have the perfect gear ratio all the time without belts, but you do need a hybrid for that.
Okay thanks but I’m having trouble figuring out how a planetary gear system works?!? What decides the speed of the ring and sun gear and what powers each one of them??
scooters use them too! i've even heard of a two-stage CVT at a 900+cc scooters by piaggio that essentially kick the second cvt with longer ratios at high speed.. i think those top at 240 kph?
I have sworn off all gm products forever. They have completely bought into the xerox business model. when you have vehicles that constantly break down you shouldn't fix it, just view it as an additional revinew stream.
Jeff Sol My dad had three cars with CVT transmissions (all Nissans) and never had any issues with them. First car was a leased Maxima, second one was an Altima that ended up getting totaled, third is his 2014 Maxima. I also own a 2010 Altima myself that his been going happily about its merry way. Sounds like people really don’t know how to take care of these transmissions and are dogging the ever living shit out of them.
+D Rock 75 mopeds use them too as well as some mini bikes. Cvt transmissions are common in low horsepower engine applications like go karts and mopeds. My go kart even had a reverse gear controlled by a lever on my right side.
For the haters, the CVT is not at fault. Some manufacturers don't use a seperate oil cooler for CVT's. That kills them. Those who do have seperate oil coolers, don't have problems as long as the maintenance is done according to specifications.
The best explanation of a Continuously Vulnerable Transmission ever.
i see what you did there. lol!
Buy toyota you will never have problems with your cvt
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.
Bennett Perry there is no maintenance on toyota cvt
mrmadame28 lmao thats bs mine blew at 100k pos
Very interesting indeed. First time I've seen a CVT demonstration without using a computer-generated animation. Really helps, thanks.
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.
Anyone with a scooter or moped has this type of transmission
@@planetphatness jaja, and chainsaw tooo... lol any CVT is bigger than motor at scooter or moped
Junk.
Out of everything I’ve seen so far, this video explains the best. Thank you.
Thank you!
I agree
Even in 2018 one of the best videos about this subject.
You have something against cute kittens?
@@WeberAuto should have used a psi regulator, other than that top notch man
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.
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
@@actuallyn Luckily in a scooter it takes 10 minutes maximum to change it
In cars it uses hydraulic pressure to vary the cones, not centrifugal effects.
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. 🍻 ✌️
as a nissan owner those Jatco auto trannies have no better a reputation i can only imagine how bad a Jatco/Nissan CVT is.
CVTs are people prove (sealed and the don't even have a dipstick)!
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 RUclips suggest list. And I think that’s very good service
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 RUclips regarding that either but lo and behold this video just popped up on my feed.
Got vaccinated? 😐
I love buying the most reliable Nissan that always appreciates in value. It is such good quality and has so many features. - Literally Nobody
Lol. Thanks for watching
my nissan altima I 6 years old and still pulls strong. wonderful transmission
These days it’s Subaru that has all the cvt failures.
Any my little 06 Prius with 274k miles is still going strong
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.
This is one of the best, most concise, clear, and quick explanations of a very complex assembly. Great job
And with multiple languages in the captions, guys you are amazing.
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.
It can, go carts use this system
Of all the videos and animations I've seen, this is the one that makes the most sense to me.
At least... videos *including* animations.
Agreed. Great video.
where is the cute cat?
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.
Thanks for watching
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
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.
@@TheKnobCalledTone. The steel belt slips and breaks because of inadequate pulley pressures. It has nothing to do with the strength of the belt.
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.
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.
There is a video that shows a belt taken apart
never thought we would see you here 8-bit guy :D
What the hell give me some commodore
@@peterjackson2625 although it still relies on friction to work, just like all v-belts do.
I had one of these on a mini bike 45 years ago. Worked pretty good.
Totally different design.
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.
I bought Mazda for this very reason! They still use gears
Just buy a manual. Subaru, Honda, Mazda etc. Problem solved.
You're going to LOVE Electric, then.
@@troyjollimore4100 Would love one but I don't have the money and I don't like care much for Tesla as a business.
@@MadCarTK Didn't specifically say Tesla. So what don't you like about CVT that isn't echoed in an EV drivetrain?
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.
Thanks for your feedback! Very interesting!
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).
@@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
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.
The Prius has an eCVT. It doesn't have a belt like a CVT.
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
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!
+Lee Ann CrochetGottaLoveIt Thank you!
quien eres
Snowmobile's have used those transmissions for eons.
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
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
شكرا جزيلا شرح ممتاز القناة الوحيدة التى شرحت عمل قير السي في تى بشكل واضح
Thank you for actually showing how a cvt functions! Most videos just explain without demonstrating!
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.
Thank you
The civic 1998 doesn't have CVT, it has a 5 speed automatic transmission 👎
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
Thank you
this is the best demonstration of CVT. thank you
Thank you!
This is by far the best video, clearly showing how the cvt transmission operates. Great job
Thank you
This video makes me apreaciate the regular geared transmissions even more
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.
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
do you one better the first car to use it was designed in 1958 as the DAF Variomatic
en.wikipedia.org/wiki/Variomatic
@@dawnmaster68 en zo is het! Voordat die Amerikanen weer met de eer gaan strijken!
Van Doorne’s Automatische Transmissie!
Thats awesome. I love working on cars, and im always blown away at the brilliance behind the transmissions. Mainly the automatic transmission.
Thanks for your feedback!
....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.....
*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*
@Gods Man Wrong idiot, it's 8-9k.
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 🙄
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.
They should team this trans up with Nissan's the mid 2000's 3.5L.
@@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.
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.
My 2000 outback came with the CVT and it has 215000 miles.
It only hesitates when it's cold. Let it warm up and it's just fine!
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.
They are lightning fast transmissions and time will only make them better
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”
Finally I understand how these things work. Thanks for the excellent demo and visualization of the workings!!
They don’t work….for long, that is…
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.
You were..
I've never seen this before. Just bought a 2021 vehicle and wondered why it never changed gears. Now I get it!
My ex drove a Nissan Micra CVT and i LOVED driving that thing around town! In sport mode it took off like a scolded cat and it absolutely howled! It was HUGE fun!
The little old lady who owned it previously had actually covered up the sport mode button with tape and had put an X on it. She'd told my ex that it was broken somehow and not to use it.
But nope! It worked perfectly! Hit sport mode and floor it and the engine would just sit in the power band. The car was so nimble & sorted that it'd embarrass all sorts of cars that just couldn't accelerate and corner like that beat up old Micra!
It was like a kart for grown ups! 😆
Thanks, you've done what the other videos couldn't, which is to get me to understand what's going on with CVTs!
fa va Thank you!
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.
Thank you for the feedback
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....
I remember my mini bike, forty years ago, had one of these. lawnmower engine, CVT, bit of petrol and off you go.
Yes, it uses the same idea
@@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.
I had one of these transmissions in a Saturn, belt was replaced twice in 180,000 miles under lifetime warranty. The only problem the car ever had.
About how much does it cost? That is my only concern with having a CVT Trans...
The hybrids with the planetary system are brilliant. They get infinitely variable ratio and no reliability issues in principle, and extremely simple mechanics
No reliability issues? Their entire service life is about 125K miles. They are the part most likely to fail on any vehicle they are installed in.
Перед экзаменом по геодезии самое время узнать как работает вариатор👍
Скажешь как сдашь
Удачи
ну что, сдал экзамен?
Ну как экзамен?
Ну что там? Народ волнуется))
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.
Thanks for your feedback!
Are you a mechanic?
Agree
Agreed, manuals rule!
Save the Manual!
Ilove my cvt on my moped 😘😘
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.
And just as weak
@@mrofnocnon True but it takes 15 minutes and a couple hand tools to change the belt on a snowmobile.
@@jeremypilot1015 True but a complete rebuild or replacement gearbox for a car.
Thank you for this demonstration.
CVT is a fascinating transmission.. i knew the theory but never actually seen how it works.
My pleasure
I think the CVT design is so cool. It’s so complex but so simple. I love driving a CVT vehicle. I really enjoy it’s rubber band effect when accelerating.
Just wait until you have to replace your rubber band trasmission. There is no better trasmission than one that has actual gears.
@@4376ED We do not have to change transmission when we can change car
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.
John Gengelbach Thank god you didn’t get a Nissan, would’ve been the worst decision you have made in your life lol
Good luck with that crap buddy!
Yeah you're going to regret it. Had mine replaced several times times because CVTs are terrible.
Awesome, but you forgot about the “fails constantly” part, all Nissan’s have it and are required to have it.
The stepper motor?
@@c4prlm4st3r No, the Nissan engines are good. But all their CVTs are crap.
@@destruxandexploze2552 am using cvt also & just got p1777 error.
@@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.
@@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.
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.
Is Honda cvt reliable?
@@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.
@@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.
@@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.
@@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
I am Using CVT Looks like simple Mechanical system However Never have been a problem with CVT. Its a quite seamless. best regards for CVT users
Thanks for watching
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.
Your videos are very good and informative. Thanks.
Thank you!
This means you can accelerate while maintaining the same rpm to stay in the power band. But doesn’t this make it really weird? I mean the engine sound will stay the same while you’re gaining speed
Yes that's how it works. It's kinda weird but auto transmissions are weird compared to manuals, anyways. It's kinda like a moped but when you put your foot down the ecu lets the engine rev higher or when you're just cruising the ecu tries to keep the rpm down as much as possible.
That's what the do and sluggishness
@@fullmetaljacket7 auto transmission is the best because it does everything precisely and u hear it shift gears
Best demo ever.
Thank you gentleman!
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!
Спасибо, всё очень наглядно и понятно. Лучше уж механику брать. Но за вариатором будущее, с развитием технологий и новых материалов, они будут на всех машинах.
Самая лучшая демонстрация работы трансмиссии!!!
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: ruclips.net/video/PiwRUfFEc5k/видео.html
Yes it is, that is a video I made 2 years ago. Thank you
Its about 399 elements
Great video! It would've been neat to see the air pressure regulated a little better and see a slower transition in the ratios.
Thank you, I agree
Самое лучшее видео по демонстрации работы вариатора.
Спасибо
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
This reminds me of those old go kart torque converters..they are also CVTS
great videos buddy really learnt alot mate appreciate it.
Thank you!
I'm surprised the cvt didn't break under the torque of the air ratchet
🤣🤣🤣🤣🤣truth🤓
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.
Thats a drill i think
@@weragewr828 CVT transmission can't handle high loads for long periods of time. They break down
The rachet is much less powerful than an engine. It can handle that load easily
I just bought toyota with CVT - and during research there was even no one bad opinion about that. They develop it more than 25 years. Hope it will work wothout issue.
Best wishes, Thanks for watching
Thank you for explaining how cvt works and with an actual live example as well. Video was short and to the point!
Cvts are great for lighter vehicles like atvs and side by sides. You don't mind so much that the cvt is kinda loud in those type of machines. It makes those type of vehicles very responsive to throttle input. From what I have seen for automotive applications, it really inhibits performance. It might be quite fuel efficient, but its not nearly as reliable as a normal auto transmission and acceleration is painfully slow.
Thanks for your feedback!
bigger pulleys, sheaves, and an appropriately size (this one is way under what should be used, and is not much bigger than the one on my fourwheeler) belt would make quite a bit of difference. more power could be moved, coupled with a higher ratio and more aggressive tuning for the cvt, and would result in much better performance.
Why don't the car manufacturers take the torque converter type of system that was used on gas powered golf carts and make it work in a car?
It would have been cool having this on a catapult tensioner in the Middle Ages, as you crank it winds up fast at first, then more and more slower as it gets tighter and tighter....
That would be cool!
My great grandfather invented this on a motorcycle in the early 1900s
Right
That was extremely well done! thank you! I never understood how a cvt transmission worked.
Great demonstration! IMHO, steel belt is better than a chain, because it is capable of transmitting a "pushing" effort, not just "pulling", like a chain.
Thanks for watching
Practically what to expect from a CVT Transmission:
- Delay or lag throttle response from a stop acceleration (hazardous when making a left turn at a junction). Delay or lag throttle response for clutch to grab when going to reverse (fellow motorists have to wait on you).
- Sooner transmission fluid & transmission filter change intervals. If you a Do-It-Yourself, drain and drop the pan, change out the trans filter, clean out the magnets, add new and correct trans fluid with the exact same amount of old fluid that came out, damp your new trans filter with the new trans fluid, and torque everything to specs. If you're a Go-To-Dealership, than you can only hope IF your fluid is actually changed or did you pay to just have your car sit? And the magnet clean & filter change thing with the dealers, forget it! Best case scenario is just a fluid flush.
- Metal chain (belt) constantly moving & rubbing up & down along the inner sidewalls (variator) of two pulleys. Let's see if most CVT can handle up to 200k miles that most standard automatic transmission could without repairs except for fluid maintenance and at normal driving stress. Only time could tell!!! I think there's a reason why some CVTs are discontinued on a same model vehicle platform, for instance, an Audi A4.
- Low rpm at cruising speed (saves fuel). So does an automatic or manual transmissions with 7 8 9 10+ gears could cruise at low rev-per-minute as well.
- Less cost & parts to manufacture saving auto maker companies manufacturing costs. As a result increases their profits. How about you as a consumer? Take 2 vehicles with equivalent comparisons except for one is equipped with a CVT transmission and the other with a standard automatic. Does the vehicle with a CVT selling price less, more, or same? Even though a vehicle with CVT costed less to manufacture. Do the same comparison between vehicles with a 9 speed and a 6 speed automatic transmissions. I reckon the answer is cost doesn't change for the consumers. Just more profit for the auto companies.
Awesome demo
+ricebowl3 Thank you!
Я ожидал увидеть плавное изменение передаточного числа, а здесь 2 фиксированные передачи.
Не. Тут система такакова что в зависимости от оборотов подается разное давлние жижи. Это у механника компрессор с одним давленем. Вот в зависимости от давления и происходят плавные изменения передаточных чисел на валах. Нету ни пинков ни подергиваний..
@@КонстантинГалимов-д5ы я думаю Виктор другое имел ввиду.он хотел увидеть как это происходит плавно а не резкое переключение.а мужикам можно было просто собрать пневматику с распределителем(ручного управления)и дросселями, тогда было бы все плавно и наглядно))))как то так)))з.ы. А я на реверс зашёл посмотреть)))
Ты ничего не понял. Не знаешь как вариатор работает?
Here in the Philippines, almost all brand new cars/SUV's (Toyota, Honda..ect) have CVTs. Some have already reached 10 years or more and still display excellent performance. Proper maintenance care and responsible driving practice are the key factors for CVT to last..❤
In 2021 it is well known to some that these transmissions are junk but manufacturers still use them because they cost a lot less than a standard automatic and they usually last through the warranty.
outstanding demonstration.. thank you for this..
Thank you!
I'm no engineer but looking at that system it seems no wonder people complain about them giving problems in their cars. Some people say Subarus feel a bit terrible on steep grades.
Thanks for the feedback!
Is a manual transmission better than a CVT?
yes
Someguyto mainsail is fun but the CVT is a thousand times better on fuel efficiency
Ichini Shichi define “better”. Manuals are way more fun sure
So does overdrive happen when car runs on higher gears?
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.
Amazing, rocking a 2021 Hyundai Elantra with an IVT (close to the same) but this really helps getting my head around how these CVT's work! THANKS!
Thanks for watching
These are so much more fascinating than the rubber-band centrifugal CVT designs.
Continuously Vulnerable Transmission if made by Nissan,
They'll break even if the car isn't being driven 😂
Facts
I like my transmissions without belts
So clutch bands, then? Or just a regular clutch.
They all have weak points.
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.
Not yet, but I hope to soon
Thank you
Thanks for the video! You are the first and only with a detailed video review!
I like at the end when the guy with the drill trys to remove it and cant without too much effort so he just sticks around for the rest of the video
about how long does that belt last??and how do i know when i need to replace it??
the vehicle will quit moving when it needs replacing. Thank you!
@@WeberAuto holy smokes
Lol, GM. no matter how many times i hear that it always makes me laugh
Thanks for your feedback!
Shows you how important it is to keep the cvt fluid clean. Tons of friction.
People who buy Nissans cant afford a car and have lower education. Keeping oil clean is definitely nonexistent.
This is the most in depth explanation for a CVT’s full range of operations. I’ll never buy another car with this transmission. Let alone an SUV😩😂
Always wondered how they worked, Got this in my audi 110k miles never had an issue good stuff👍
I was worried it was gonna break during the demo - LOL
I'm surprised it didn't.i know from experience those things are junk.
Belt driven sounds like a bad idea.
If the belt breaks replacing it is a very expensive proposition.
Thanks for your feedback
Peppe Ddu .,
But it means you can have the perfect gear ratio *all the time*
@@hazza2247
Actually with the planetary gear system of the Prius you do have the perfect gear ratio all the time without belts, but you do need a hybrid for that.
Okay thanks but I’m having trouble figuring out how a planetary gear system works?!? What decides the speed of the ring and sun gear and what powers each one of them??
The most efficient and boring transmission ever made. CVT. Video is A+ though.
And most unreliable. Its usually require maintenance after 40k miles.
@@A7ibaba not really cvts have been in farm equipment for years now.
12 years later and CVT transmissions still suck. Great explanation, thank you!
Well explained. Now l know why my Dad always preferred manual gear boxes.
Thank you
This is why the HHR is garbage. Much like all GM junk these days. Tired of working on them. Btw snowmobiles have used this for decades.
Thank you for the feedback
scooters use them too! i've even heard of a two-stage CVT at a 900+cc scooters by piaggio that essentially kick the second cvt with longer ratios at high speed.. i think those top at 240 kph?
I have sworn off all gm products forever. They have completely bought into the xerox business model. when you have vehicles that constantly break down you shouldn't fix it, just view it as an additional revinew stream.
K. beta
Where have you seen 900 cc scooters?
Honda discontinued their silver-wing.
So have Bridgeport milling machines!
That thing looks very fragile considering what it has to do and the forces it takes.
dont worry, for toyota 80k km oil change and at 160k km oil+belt change. Belt handel brutal force very well
Jeff Sol My dad had three cars with CVT transmissions (all Nissans) and never had any issues with them. First car was a leased Maxima, second one was an Altima that ended up getting totaled, third is his 2014 Maxima. I also own a 2010 Altima myself that his been going happily about its merry way. Sounds like people really don’t know how to take care of these transmissions and are dogging the ever living shit out of them.
I used to have a go kart that had a cvt.
+Jonathan Javier don't talk to me like that!
+Jonathan Javier don't talk to me like that!
I know the use them in Karts and snowmobiles, but is there anything else you know of?
+D Rock 75 mopeds use them too as well as some mini bikes.
Cvt transmissions are common in low horsepower engine applications like go karts and mopeds.
My go kart even had a reverse gear controlled by a lever on my right side.
***** , Right on. Thanks.
Best CVT explanation across RUclips. Many thanks for your effort sir. I have subscribed.
Thanks and welcome
For the haters, the CVT is not at fault. Some manufacturers don't use a seperate oil cooler for CVT's. That kills them. Those who do have seperate oil coolers, don't have problems as long as the maintenance is done according to specifications.
Thanks for watching