How a Scooter Transmission works
2020 ж. 23 Там.
7 012 759 Рет қаралды
This video explains the working of a Gearless Scooter’s Transmission System with relevant animations.
Gearless scooters have automatic transmission known as Continuously Variable Transmission (CVT) which enables it to automatically shift from low to high drive ratios using centrifugal systems.
The fact that these scooters are eubiquitous and very common does not take away from how absolutely brilliant this engineering is.
Not brilliant at all as it is wasted energy due to the constant friction.
😂😂😂
@@receptayyip1410 The gasoline motor is only 15% efficient, so no problem :)
@@receptayyip1410 everything wastes energy
@@ShivKamalUpadhaya My chain driven bike uses only 1.5 liter per 100 kilometer but my scooter uses 2.2 liter per 100 kilometer although my motor bike hits 80 kilometer per hour and my scooter only 45 kilometer per hour.
One of the best explanations bout scooter CVTs so far.
i would say - the best
@@dzintarinch how r u, its been a year of comment
@@snappyloop7489 how are you man
@@archon4332 lol
Wow, that’s actually a good explanation. Especially liked the centrifugal clutch part, always wondered how some go-karts can keep engines running at low speeds.
go kart cvts have the drive pulley open slightly wider than the belt at idle and have a brass bushing at the center that acts as a bearing for the belt. but when the drive pulley closes it squeezes the belt, engaging the cvt. a lot of go karts also use a just a centrifugal clutch, running at one gear with no way to change them.
Wow, ive always wondered how scooters ran without gears.
not true....they have gears.4 of them....
vjeran vlahovic ?!?!
@@Robin-kn6pn maybe he is talking about the gear train shown at the end of this video
@@zagrepcanin82 not really. They usually have another 2 for the starter motor and his clutch, and if 2 stroke, another 2 for the oil pump and his driver.
Вов, иве алвайс вондеред хов скоотерс ран витхоут геарс.
I absolutely LOVE this women’s voice and could listen to her voice 24/7 365! Just soothing and relaxing.
Well yeah, but just admit it her voice is sexy as hell!😆
Snowmobiles and industrial machines have used this system for decades. Nice animation.
there are 3 types of cvt...this one is used on scooters. duch daf invented the cvt based on spheres
I think it was invented by Leonardo da Vinci right?
@@zagrepcanin82 Yes, the Daf! 👍
Nope. It was invented by the dutch car company daf, who used it on all their cars.
Daf goes in R the same speed as in D forward .They did backward races with Daf also was on tv popular those days
Very nicely done. I have been maintaining my own scooters for a few years now, and was familiar with most of the theory/physics behind the system, but I was happy to learn a little more here. This video is a fantastic resource. If I were teaching English to mechanics or engineering students, this would certainly be on my go-to list. Thank you.
I have a scooter and was watching this in class then on my way back home my belt went "pop" 🙂
"you have known too much"
it snapped right? clean everything in the housing and buy a new one...if your speed limitator is off buy a 9mm longer belt.cheers
zasto sam ja tebi pisao na engleskom?kaj te muci brate?
thats really a bad experience
🤭🤭😂
This was by far, the best explanation I have ever seen on anything in the few years I've been involved with 2-strokes specifically.
I am not an engineer but after watching this video I am feeling like becoming one. Beautiful video.
Keep these animation / explanation vids coming. These are just awesome to show people HOW things work instead of trying to explain it to them! Thank you TM.
thought the same thing
That’s some beautiful engineering.
Simplicity works. The fact that this mechanism works with centrifugal force and the fact that the belt can never increase in length is just so satisfying.
Cvt's suck...
@@carlhouser9367 Why?
@@carlhouser9367 To some extant. But as we see here, they have their uses.
@@carlhouser9367 They're fine for scooters and snowmobiles...
Really one of the most genius inventions in transportation. This is the entire powertrain right here. Attach that wheel to somthing, and you've got a working vehicle. Cheap to produce, simple to maintain and it works well.
I understood how the CVT worked in scooters before this video, but the detail and clarity helped fill a few gaps such as the centrifugal clutch being located on the rear pulley. I always thought it was on the front..Makes sense..
Excellent video. Great illustration of the CVT. I love it when someone can show and tell you how something works in a few short minutes with such clarity. Thank you very much.
This channel does a great job for humanity. This kind of content is very beneficial for the society. I would like to thank the producers and supporters.
you bet it is
you guys who makes these animation vids are the real mvp. beginner mechanics wannabe like me truly appreciate it
Engineering behind this awesome, it is hard to believe how the things calculated to obtain this, but all I can say it is incredible
Best explanation. only takes 3 and a half minute. while other videos took an hour.
The best possible way to explain the working of any systems, excellent demonstrations.
I just found this channel and I absolutely love your videos. I’ve already watched most of them and am binge watching the rest. As a biker and aspiring mechanical engineer I find them very interesting and informative. Just wanted to say, thanks and keep up the great work.
Great animation. I was always wondering how scooters work without manual gears. Turns out it is another genius feat of engineering
KZhead is showing me what I really actually want to watch I'm very thankful
This is an absolute information to understand CVT. Thank you very much and keep making videos like this
Thanks for the amazing animation and voice over to make us understand the concept of CVT!! The best video I have seen on CVT!!!
Really neat to see as I just had to learn all about this recently. Not long ago I upgraded my wife's scooter with a new variator and slightly heavier rollers, which ultimately gave it some more top end speed (From about 36 mph top speed up to 41-42). Quick operation and really woke that little scooter up
scooter tuning
How does the new variator and heavier roller increase top speed? I'm guessing it has a larger maximum diameter?
@@holohulolo not really a larger diameter, but my understanding is the heavier rollers cause the variator to reach its highest diameter more quickly, and also to maintain it longer and at lower engine speeds. Essentially it's just staying in "high gear" more than it otherwise would
This is by far the best explanation video in the internet.
Thanks for the very detailed info on CVT! Even a pro mechanic would fail to make us understand this clear!
Thank you for creating such an informative and entertaining video on KZhead. Your hard work and dedication to the topic really shines through and I appreciate the effort you put into it. Keep up the great content!
Thanks for a great vid. I had a reasonable understanding of the system but you showed me how the clutch worked & also the final drive from the driven pulley to the rear wheel. I owned motorbikes for 14 years but changed to scooters in 2019 as I LOVE the ingenuity of their CVT system & their practicality far exceeds that of motorbikes for regular 'daily driving'. 👍
How great is this channel! And how epic are the people who thought of CVT using 2 conical plates!
Very handy and useful information as this process is always a bit complicated to imagine in it's whole even for experienced riders and mechanics since there are so many parts envolved in it 🧐🤨🙂.Big thanks all the way from Portuga🇵🇹 for the making of such video!
When I was little, my dad built a go-kart/yard-kart for my brother and I. It used this same system with a 5hp Briggs&Stratton motor. I had a general idea of how it worked, but this was interesting. I’m now an engineer, but I work with robotics and automation.
Simplest and most detailed I have ever watch about Cvt. Good Job! 👍👍👍👍👍
An excellent explanation! Once one experiences the simplicity of twist-and-go (incl. DCT), one realizes just how enjoyable riding a two-wheeler can be. Shifting gears manually is so last century, especially in today's traffic. I recently dropped my ST1300 after accidentally pulling off in 2nd and stalling.
This was a great explanation of what goes on in the variator and how the clutch works, but they left out what controls the movement of the belt up and down the cones on the clutch/driven side. It looks to me like that is simply the fact that the belt is a fixed length, and as the diameter of the drive pully expands the belt tightens between the pullies, forcing the belt down further between the cones of the driven pully, forcing them apart and compressing that yellow spring you see at 2:30. It might be obvious to most people but it wasn't to me at first and I wish they would have at least mentioned it. Overall though great explanation thank you!
the belt is finite,so if you have more belt on one side it means less belt on the other side. I'm bad at explaining but this is so interesting
I came here to say the same. Even though its the best video I could found explaining that, the part of the driven pulley is omitted. I came up with the same explanation as you did. I wish that someone could confirm it or send another video that explains it better. Thanks!
I checked it on chatgpt and its right
Clear and concise... Great video
Thank you for this! I know it is a small detail, but having a female narrator means everything to me. Thank you!
I wish this yt channel gain more subs! Thanks for all the wonderful animations and content.
Came here for scooter engineering, but got ASMR instead
This is getting out of hand now. Another day where just a thought in my head and the related video pops up in my recommendations. 🥺
Best animation demonstration I ever had. Best explanation.
Make more videos like this👌your explanation with the perfect animation clears that particular concept
I used to tear this system down since 15YO and it fun playing with Yamaha or Honda CVT ☺️
Such a big help for me as a partsman on a motorcycle shop👌👌👌
I wish this channel uploads more often. Really great channel, and fun to learn and watch.
Thank you for this informative video. I learned something today (2 years later).
That gear train seems very important as to let the cvt and the clutch work at high rpm where the centrifugal force can act and have a low torque to prevent friction - all tagnks to the speed reduction ratio
Very nice explanation indeed!
thank you this is the clearest explanations I've found about scooter's cvt
For a long time I’m searching for this video. Thanks for the information
this reminds me of the variable valve timing on Suzuki´s GSX-R1000
Is it really?
@@KWOKGB no.
The real beauty of this system, when you think about it, isn't just the functional result but the sheer simplicity of it. There are so few manufactured parts compared to a conventional motorbike - I finally understand why scooters can be produced so cheaply. They must be a doddle to service too (other than belt removal and installation, which is probably a right laugh).
You change the belt about once a year, cheap belts will disintegrate though. They're super easy to work on and maintain due the the simplicity of the design. Only one drawback is you loose a lot of torque and responsiveness from the belt.
Dude, this type of engine is more complex to make and also difficult to get it down to a size that fits in a Scooter. In general Scooters costs more than a Motorbike compared to features. Just compare the wheels of a scooter to a motorbike, Even a simple Disc brake witout ABS is sold at a premium on scooters.
Amazing video...I was thinking for long to search how gearless enzine works and today I saw the video in recommendation..KZhead is reading my mind.
These videos are awesome keep them coming... They are so easily understood and demystify the subject of interest extremely they make it so much fun to learn.
This technology is thanks to the endeavours of Rokon motorcycles who were the first to put it on their motocross machines back in the 1970s. At the time most technical experts were very sceptical of their practicability.
SINJH GUDDU no, this technology was invented by Hub van Doorne, founder of DAF, he used this technology first in his vehicles. he invented this technology back in 1958
@@ForTheOmnissiah Not correct. DAF is a huge corporation, and they launched the first mass produced CV tranny in 1957. Rokon was never a large company, and the CV trannies they used back then had absolutely nothing to do with the company. Rokon bought the completed tranny units from Salsbury, who had been manufacturing these trannies since the late 1940's.
Nowadays, this tutorial/presentation will be very helpful for those who are owning and driving their #YamahaNMax ( #NMax )...
Pcx
That's incredible and excellent explanation for Scooter CVT
another episode of everything can be learn easily with good animation thank you
So the belts are not engaged by their teeth but by friction against the conical parts? Could someone please clarify? Thanks
Yes
Wow, all along i was thinking scooters has automatic gear shifting system.
With this video , this helping me to knowing the name of cvt part , actualy i dont understand english language . With this video helping me to knowing the englis name all of cvt part . Sorry for my bad english , i learn this video cause i live in Bali and Mechanic is my job, where my costumer average is tourism from Brazil,Australia,Russian . So with this video i can getting an understanding about cvt part .
Brilliant explanation.Now i know exactly how it all works!!!thank you!!!
Pops up on recommendation. Me: Oh how interesting!
Small capacity low output engines work best with CVT . Infinet gearing always uses the maximum power available. A gear box is nowhere near as power efficient. That's why at the lights the scooters leave the Porsches standing up to 30 mph. 12bhp vs 200bhp CVT works. It actually also works well in small engined cars
CVT is a tiny bit better than modern automatic transmissions in efficiency, not massively better since the engine needs to have some speed or revs to effectively suck air, and mix the air with fuel. The least powerful modern Porsche has over double the power to weight ratio and a more aerodynamic body as well as lots of torque down low, it’s unlikely that it will be slower than a scooter with a CVT, also the acceleration of CVTs are limited in how much grip the pulley belt has.
This information were absolutely magnificent as well as knowledgeable .. wow!!
Such an amazing and simple explanation!!! Thank you so much☺
KZhead reccomendation AI has become better at finding videos than I do
This is precisely the principle of the DAF variomatic, invented by them (Hub von Doorne) and first put into production in 1958 on the Dutch DAF 600 car.
Amazing explanation !! Great job. Many Tanks
When the shortest video are wealthy it looks like this one you don't have to spend much time to gain the information thank you
As one of the biggest fan of this KZhead page.Can i know How much day's would it take to make one animation video like this. Plz comment
It would take upto 1 week at atmost work of cad and ANSYS
Thankyou soo much for giving us that much of time. 🙂
Take Diversion Why would you use ANSYS for animation? Is it necessary?
Suggestion: I think it would be clearer if you mentioned "High torque vs high speed", instead of contrasting "high torque vs high RPM". I think you're referring to high RPM for the wheel, which translates into high speed. Most people who use the term RPM are normally referring to the engine.
Bruh, RPM is just angular speed, and in this case since she was absolutely never talking about translational speed or the scooter even moving, RPM is correctly and clearly used here.
@@mfitz1718 Technically correct≠good for teaching. Just because it's technically correct doesn't mean it makes it easy to learn
Wow now it's all clear....thanks! 15 years wondering...
By far the best explanation of a cvt
Scooter shown in the beginning of the video is HONDA DIO (Indian scooter)
How is a Honda dio an "indian scooter"??
Honda dio sell world wide bro... Honda is japanese company....
Nothing: KZhead: How a scooter transmission works
That's brilliant. Well explained. Thank you.
Excellent! Clear and concise!
How u do complex modeling plz tell
Great explanation:) but scooters are still a slow piece of crap that should get off the road :| i always feel like running into the stupid things...they are an insult to the word "motor bike"
Not tmax turbo and honda adv😎
My dad's scooter is 175cc and beats every single car in acceleration I've faced. I'm guessing the 0 to 60 is 4 seconds when the transmission has fully warmed up. Max speed is like 70mph but for some reason going anything over 55 is fiscally painful for my arms and body.
PC tech tips what scoot is this? My SV650 would hit 60 in just under four seconds and they are 75bhp sports bikes weighing in at around 190kg but scooters are light, usually around 120kg. Power to weight is a big advantage.
I have a "49cc" scooter (the slow ones) upgraded to a 70cc big bore kit My friend and I raced (he has a 250cc bi-cylinder motorcycle) I destroyed him like it was nothing
@Emmanuel Francis Jr. Ramos tmax turbo,honda adv750,and kimckoAK550 which is maybi i think ak550 better of tmax,they are really powerful machines whit god reialibiti and speed,and realy conforly for drive
Cool! Now THAT'S a great illustration of how a CVT works👍. My belt snapped on an old piaggio I once had... Very easy to replace. Just keep in mind, those belts don't last forever. But they are cheap and easy to replace. 😊
Best video explaining cvt transmission.
Amazing, I've recently switched to a Yamaha scooter and its incredibly smooth at all speeds.
Most useful video I've seen this week, much appreciated 👍
hi nmz have you become a flat earther yet? If not I suggest watch a 13 part series called _What on earth happened_ by Ewaranon to learn that the earth is not a globe. I got it in my about tab.
So simple yet so effective!
Thank you. I took my new scooter out for a spin and I didn't 'hear' it change gears, but it did accelerate all the way to a test - 20 mph in the neighborhood. This video explains how it automatically changes gear accd'g to RPMs.
I'm watching this so that I know how my scooter works and thanks for this great video and animation
I was actually just wondering about this the other day, thanks algorithm 👍🏻
I have an Air Blade 150 for about 9 months this video will be helpful
Beautiful and most satisfying explanation... Kudos..
Absolutely brilliant
Thanks for this video my curiosity over other things decreases
Thank you very much. This video was really informative.
you cannot get a better advice how cvt works than in this video ... period
Very simple and genius! Simple=reliable, genius=progress!
Great explanations easy to understand!
Awesome explanation... Now I know how my scootics work.
thx for the beautiful explanation