I saw one of these on an old TV show called "The Inventors " on ABC TV in Australia in the 1970s. It had a panel of experts including an engineer, who was fascinated. He said he could see what was happening, ( the varying output shaft speed) but couldn't understand how it was happening. The inventor said it worked by varying eccentricity. Apparently it was much more efficient than a normal gearbox. I always wondered why it never became commonplace for so many applications......
Given how old this is, I don't know if you'll see it. I've been looking at drives like this for the last two weeks. The first system was called a D drive. Its inventor was apparently heckled by trolls till he left the scene. This type of drive is now showing up in different forms like the Inception drive. All use some form of variable eccentricity.
The Inventors episode that I cannot find. This is as close as I've seen. ...no news though... Torque kills these gearboxes, as the infinite ratio at low end causes massive stresses. I believe high speed harmonics can be an issue also.
Judging by the eccentric piece, this is probably a ratcheting CVT coupled with a bevel gear box to combine the constant speed input with the variable speed of the ratchet drive. Very similar to the power split of the eCVT in a prius, but the electric motor is replaced with a ratcheting CVT.
people are saying this was recorded on a VHS tape in 95'. my parent's wedding recording is in high resolution than this, also, you hear that? *its the joke going over your head*
This Variable gearbox has been rehashed many times. Many years ago I thought I was on to something, but was soon to learn that I was at least 25 years to late, when I was informed by my Engineer boss of its use was in some US WW11 Tanks.
I am acquainted with old marine gearboxes with a forward, free and reverse position and it has a differential arrangement and a brake band where the differential can be locked for ahead, free for free and lock the brake band for reverse. For any speed I can slip the brake band. It all works because of the characteristics of the differential unit. Then there are the automatic gearboxes with a set of planetary gears which again , clutches bring in an out the different ratios of the planetary gear selected. I would not call these an infinite gear system as they depend on slip is one needs a variable gear. I had a moped a long time ago which had an infinite gear ration and depended on a pulley whose faces change and a belt rides the surfaces at different radii. I still do not fully comprehend the infinite action of this unit, but good luck with it.
Interesting idea. If the mechanism is capable of transmitting sufficient torque, I could see this having applications in many workshop machines, like lathes, Milling machines and drills.
Mechanisms to do that have been around for 80+ years, and are in those very tools you've listed. Especially Bandsaws, mostly vertical bandsaws. It's just not in $100 harbor freight drill presses.
I want to see a full-mechanical-lockup variable speed drive. There is a good reason why this is not utilized with every single adjustable-speed mechanical device on the planet right now..... and it's not the cost.
The disadvantage of such transmissions is that they are pulsed. The moment transmitted during one revolution of the drive shaft can vary from a maximum value to zero as many times as the MCA is placed around the circumference, for example, five. In this case, a complete torque pulse is transmitted in turn through each MoA, while the others at this time operate in the free-wheeling mode.
i just can not believe someone hasn't`t come up with a mechanical variable speed transmission system that would have been excellent with the old mack trucks no smoke and effiecency out of this world
If it truly was a gearbox with "endlessly variable" ratio, it would have been worth Nobel Prize, if not more... The crappy video quality suggests the project never got any further.
Why exactly? As I understand it, it's not that hard to achieve this with differential and for example planetary gears. The real problem is mechanical loss due to friction. But hey, I am not an engineer.
@@petpaltea exactly, the losses are what you want to avoid. Basically, if the gearbox uses some kind of a slipping mechanism to achieve the "smoothnes" of variable ratio, there will always be losses within it, so instead of transferring as much power as you can, you have to waste a proportional amount of it. Plus I don't think this one actually makes the torque go up when the speed goes down, as one would expect from a gearbox... A variator is an example of a transmission with infinitely variable "gear" ratio, but the losses due to friction are still higher compared to traditional gears.
Basically, with a differential type mechanism the more braking force you apply to one side of the assembly the faster the other side rotates.......take all the braking force off and it will freewheel......progressively apply a braking force to one side and you have a variable speed output......a simple torque converter principle.
I saw another video with the same principle and it to achieve different speeds made losing power, then a lower speeds require more power than regular transmission to deliver the same power to the wheels. it looks like the old automatic transmissions where there is a brake belt to stop the planetary gear to change next speed.
For the detractors of the system (see the comments), practical or not, it is explained, all the automatic gearboxes work on the principle of the mechanical Differential, locking a block of the planetary differential between both speeds up the another and vice versa
Indeed. "Look at this box that you can't see inside that allows variable transmission!" Almost as bad as those "perpetual motion" videos. I feel scammed. I should have guessed this was a lie before I even clicked, but you never know.
There's really not much going on there that a well-outfitted 1890's era machine shop couldn't handle to be honest. A C96 handgun is ten times as intricate as anything seen in this video. Not to mention watches. Look into vintage machines, engines, and manufacturing capabilities and you'll realize humanity and the average mind have been heavily devolving since 1900. Gears and bearings are nothing to make. It's just the thought on how to arrange them into something new that people tend to get held-up on
2:20 check logo image on right wheel spinning whe he change position you have variation on torque and speed but the chain moving almost in same speed this gears system are shifting gears with low energy and smooth transitions , and low impact in the gear box
Basically you reinvented the planetary gear, as it is used in the Toyota Hybrid engines. There it is used to combine the combustion engine (the inner rotor) with the main electric motor (which is at the outer ring). The Planets are controlled by a second electric motor, which can also work as generator (thus acting as a brake) In this combination it is a very powerful and simple gearbox with an enormous efficiency.
sploofmonkey - that's because "climatic warming is a hoax". I heard him say it. It's all to benefit the Chinese, who are way ahead I the manufacture of solar cells and turbine blades. I agree with you - if Trump wants to "make America great", whether again or not, he should be pushing the sort of industries that will be viable in a future world, not re-opening coal mines.
Lead or lithium batteries are recyclable and contained in a shell, while engines burn and puke oil, gas and metal their entire lives. The mines for lead and lithium are a fraction of the size and pollution of the mines for steel and aluminum, which are what 99% of the car is made of.
you are an industrial design agency? I have worked for consultant design agencies for several years of my working life, when we presented a concept to a client, we ALWAYS had to verbally describe what we were doing, I WISH we coulda just thrown the stuff up and turned on music!
Nice design! I saw a different design on TH-cam a while back that was variable and went forward to neutral and neutral to reverse . And I can't find it anymore . Maybe someone can post it again ? It would be fantastic for a car transmission no parking brake needed. engine off it won't move, srart it, and it won't move, until you actuate it into forward or reverse.
This would have an application for metal lathes. Traditionally you had Kopp variators like on the Colchester Chipmaster, standard Norton style gearboxes and then VFD's. Kopp variators are good and have high torque in the low ranges similar to this, VFD's do not.
The large ring on the eccentric portion is what drives the output side by friction, but only at a small contact point between the two. Did you notice when the arm reached a certain point (about 60 degrees from start), it slowed down again? This would amazing for a bicycle hub if it could go about 6:1. I see why it never made it.
From 0:13 to 0.16, the sun gear seems to be off-centered. Is that what you are doing on the physical system from 1:15 to 1:18? I don't gear how your speed can vary with this manupulation
2:20 check logo image on right wheel spinning whe he change position you have variation on torque and speed but the chain moving almost in same speed this gears system are shifting gears with low energy and smooth transitions , and low impact in the gear box
I need one of these if it can achieve 98% efficiency in super thin oil. I need 1:1 to 2:1 gear ratio adjustability. I am only spinning a VAWT wind turbine at 40 to 80 RPM.
Para os detractores do sistema (vê-se nos comentários),prático ou não, cabe explicar-se,todas as caixas de velocidades automáticas funcionam sobre o princípio do Diferencial mecânico,travando-se um bloco de planetários o diferencial entre ambos acelera o outro e vice-versa
Two planetary gearsets into a third planetary gearset is how this functions. And yes, a differential is a form of a planetary gearset, just coaxial rather than planar. Gearsets 1 and 2 are driven by the same ring. There's somehow variability between the planets themselves, which is probably why there's no solid carrier and the planets are hinged on the carrier, which would explain the eccentric drive to induce variability. Then each sun drives a side gear, and the spider/satellite gears drive the output shaft. A 1:1 ratio between the two planar planetary sets will achieve highest speed, but changing the ratio where set 1 favors rpm and set 2 favors torque, you'll get a lower output speed with increased torque. With a 1:1 ratio between the planar planetary sets, the spider/satellite gears in the coaxial planetary set remain stationary and spin the shaft at the 1:1 input speed, but once that ratio deviates from 1:1 the spider/satellite gears will begin to spin on their axis as the side gears are not rotating at the same speeds. Think of a differential working in reverse, rather than driving a ring gear to drive two outputs that can differentiate, you're driving two inputs that can differentiate to drive a singular output. The only thing I have yet to figure out is how the planets themselves actually work and how they attain variability. Typically a setup like this would drive the components in a different way; there's an old GM video from the mid 20th century that achieves this by driving the ring and sun of a planetary gearset individually with the rotation of the planet carrier being the output, where the planetary gears themselves provide the variable function by rotating in a circle yet being able to slip on the shafts that connect them to their carrier. What's interesting is that all three planets are engaged with both the ring and sun, no matter the eccentric offset of the components, and I believe the planet carrier itself is entirely stationary. I don't understand where the variability is coming from, unless there's components not being shown in this. The drawings at the start are way too blurry, but it might be possible there's actually four planar planetary sets, or one planetary set is split between a ring-planet and planet-sun sets with the eccentricity of the planets somehow playing into this, but it looks like the planets themselves are meant to be coaxial, but the drawing implies eccentricity between planet-r and planet-s. Maybe this is where the variability comes from, less eccentricity between planet-r and planet-s provides higher speed, but how this is actually driven, I'm not sure. I also cannot find any more information on this specific gearbox, or anything similar to it's concept. I guess it'll remain a mystery. Most I can find is that it's a bicycle transmission with 4:1 being the max ratio, and that there's supposedly a patent that I cannot find.
I suspect there's some frictional component involved clamping one of the outputs from the planetary shafts to "control" the speed of the driven shaft (the shaft being monitored). In the clip with the hand-held tachometer as he's moving the lever over the gearbox, we can see the revs increase, and then decrease again towards the end of the anti-clockwise motion of the lever, and then he moves the lever back the other way (clockwise), we see the revs still decrease further, which is completely counter-intuitive. If the output revs are increasing then decreasing in one direction (maybe there's a frictional maximum point there somewhere?), then why are they decreasing still when moving the lever back in the other direction? I'd warrant that he hadn't moved it clockwise far enough to re-engage the friction component yet. That all implies that it's not doing anything like a directly ratioed CVT at all, and is just doing some friction based design that loses efficacy as it wears and/or as friction device moves away from the point of maximum resistance. We see at some point in the video that there is some rotational offset mechanism that can be used to move some framework closer to, or further away, from the output shafts, so this again in my mind confirms my suspicion that he's just providing some frictional clamping on one of the output shafts to effect variability in the measured output shaft.
@Shoestring Stacker yes, i have a Nissan Altima with only 92k miles and the CVT doesn't feel the same as it used to. Im guessing ill have to rebuild it before 100k, well at least the car gets awesome millage, making up for the week transmission, thats on of the reason why the millage is good, light-weight transmission. Thanks for the awesome comment!
@Shoestring Stacker 1.2L? are you sure? that is like 2 Vespa engines bro! Mitsubishi stock stereos are actually really good, my 2015 Nissan Altima SV 2.3L has good sound, but the rear 6x9 speakers are 50 watt at 2 ohms! (2 ohms? WTF?), so the bass sucks ass bad, 2 ohms is not enough resistance unless your putting the speaker in a sealed box or using a quality amplifier, but i still say its a bad idea, your better off over-loading speakers; then an amplifier. The problem is the speaker is too efficient and moves way too much creating a lot of volume, even at low volume and the bass turned all the way down; the speaker is too efficient and moves so much that bass volume does not match the other frequencies. (this is also a good way to blow your amplifier, using speakers with very low resistance)
nice, good amp! and yes, Im talking about impedance basically, impedance is the ohm measurement for an output though, like a pre-amp, but same thing we are talking about. I used to work for Harmon and Kardon building amps and eq's back in mid 80's, i used my employee discount to order some auto amplifiers (we only made home units) anyway, I had two JBL 180 watt amps in the back and a kenwood 4 channel amp under the seat to power the front speakers. Total I had 21 speakers (including the 3-way / 4-way speakers counted as a separate speakers) so i had some 3 inch 3-way blaupunkts in the dash, some kenwood 4-way 5 inch in the doors, some 7x10 (6x9 adapting brackets) kenwoods in the back (4 way) and 2 12 inch JBL subwoofers in a band-pass box i had to support with my car jack in a VW Golf, all at 4 ohms except the 2 woofers I ran in series to get 2 ohms, man the fucking car cranked! only 1100 watts, but all RMS!
Wow, what a lot of nay-saying! Internet is good for that to be sure. Cannot say much about your engineering, don't know your intent, but the music was swEET! I added to my music list. One man's Mozart, another's Stravinsky perhaps, but I dig it. Thanks for sharing!
For a planetary gear to vary it's speed it needs 2 rotational power sources. This can vary the speed of one power source continuously. Yet it seems the range of speed ratio change is very small
Agreed, but I don't see the two motors.(MG1, MG2) I don't see the wiring needed, to supply or recirculate the current between the two motors. In the E-CVT, the differential carrier is part of the final drive, not the epicyclic gear set.
It struck me as similar to that, as well. Here you are able to shift the planet gears so they are asymmetrical to change the torque split between left and right halves of the diff. Pretty interesting. No, it isn't using conical gears, as some have said, and it isn't using friction, as far as I can see. Changing ratios by changing radius of the planet carrier. Actually pretty clever.
So in a sense it is a constant speed drive or CSD. Its used in aviation on the engines for the generators or anything that requires a constant speed. Interesting tho
Увеличение крутящего момента ценою потери мощности на результирующем валу. Ну, не знаю... возможно в кондиционерах найдётся применение, для плавной регулировки скорости вращения вентилятора, только... электрическая регулировка - эффективнее.
This is brilliant, but please for the love of baby Jesus get rid of that noise. People looking at this are intelligent & don’t appreciate the added noise. Thank You & have a great day.
It was invented in Russia in 1977. A.A. Blagonravov "Mechanical stepless transmissions of a non-friction type". The Australian company repeated its experiments 20 years later. Apparently, investors refused to invest in this invention because of too little efficiency. Russia has a tremendous potential in developing ideas and does not know how to bring them to realization. Therefore, most inventions flow to the west where people know how to make money. Это изобретено в России в 1977 году. А.А Благонравов "Механические бесступенчатые передачи нефрикционного типа". Австралийская компания повторила его эксперименты спустя 20 лет. Видимо инвесторы отказались вкладывать в это изобретение по причине слишком слабого КПД. Россия имеет гигантский потенциал в разработке идей и совершенно не умеет их доводить до реализации. Поэтому большинство изобретений утекает на запад где люди знают как делать деньги.
It doesn't look like a working machine. How does the eccentric ring fit in the case? The revolutions change only when a person controls the lever, and then they stop.
EH? from what I've seen - now 1/2 brain asleep from music - nothing new here at all - Epicyclics and Diffsand duff music. Pity. I hope this is constructive criticism
Was ich verstanden habe: 1) Ziel: Ein CVT (continously variable transmission) Getriebe zu bauen. 2) Es existiert ein Prototyp (immerhin) 3) Ein gewisser Effekt ist messbar 4) Das Ding besteht im wesentlichen aus einem Differential, einem Planetengetriebe und einer Exzenterscheibe. Was ich nicht verstanden habe: 1) Das Video ist von 1995!! Sollte das Getriebe einen Vorteil verglichen mit existierenden Lösungen haben, wäre es schon lange am Markt. Also: wo ist der Haken? 2) Wie funktioniert es? Wozu dient die Exzenterscheibe? Der Funktionsmechanismus erschliesst sich mir nicht aus dem Video.
el sistema de diferencial si se usa en vehículos pero todo el sistema puede usarse o se usa en algún vehículo automotor? Derrepente como remplazo de caja de cambios?
If I understand what I saw, there is too much loss of energy when the system is clutched/braked. This old mechanical idea has been around for over 100 years. Nothing new here.
Not possible to endlessly variable gear if the gears have same diameter. But if you somehow can change the diameter and center of the gearwheel you can make such a gearbox 🙂
1:18, the finest bass drop throughout the land. I want to munch some eccies and listen to this on repeat till sunday morning.
Not clarifying anything. Probably just friction loss that creates a speed difference
I saw one of these on an old TV show called "The Inventors " on ABC TV in Australia in the 1970s. It had a panel of experts including an engineer, who was fascinated. He said he could see what was happening, ( the varying output shaft speed) but couldn't understand how it was happening. The inventor said it worked by varying eccentricity. Apparently it was much more efficient than a normal gearbox. I always wondered why it never became commonplace for so many applications......
Given how old this is, I don't know if you'll see it. I've been looking at drives like this for the last two weeks. The first system was called a D drive. Its inventor was apparently heckled by trolls till he left the scene. This type of drive is now showing up in different forms like the Inception drive. All use some form of variable eccentricity.
The Inventors episode that I cannot find. This is as close as I've seen. ...no news though... Torque kills these gearboxes, as the infinite ratio at low end causes massive stresses. I believe high speed harmonics can be an issue also.
Watched, read comments, watched again. Sound on both times, might watch again.
here's a real man, unlike the rest of you whiny peeners
That weird music sounds like it is from a sci-fi animated series : Roughnecks: Star Ship Troopers Chronicles
Plot twist: It's actually alien technology and the aliens provided the music
I wish you hadn't put such wonderful music. I had to watch it thrice before I got to looking at the gears and all.
Twisted but true 🙂
Judging by the eccentric piece, this is probably a ratcheting CVT coupled with a bevel gear box to combine the constant speed input with the variable speed of the ratchet drive.
Very similar to the power split of the eCVT in a prius, but the electric motor is replaced with a ratcheting CVT.
That's probably a plausible explanation of it, there just wasn't enough detail in this video, to figure out how this thing works.
is it just me, or does this look like it was recorded on a toaster
Potato
1995 - just VHS tape
VHS Camcorder. It's from 1995...
people are saying this was recorded on a VHS tape in 95'.
my parent's wedding recording is in high resolution than this, also, you hear that?
*its the joke going over your head*
@@Breakdown5297 big ha ha joke hm
The song is called: "Overturn - Riot". Its on TH-cam.
god bless you
Its probably just 2 planetary sets with different ratios being controlled/chosen by virtue of how a differential works
This Variable gearbox has been rehashed many times. Many years ago I thought I was on to something, but was soon to learn that I was at least 25 years to late, when I was informed by my Engineer boss of its use was in some US WW11 Tanks.
So... err ya gonna tell us about WW3 thru WW11?
It feels like a lost 9 inch nails audio track, Some how
I am acquainted with old marine gearboxes with a forward, free and reverse position and it has a differential arrangement and a brake band where the differential can be locked for ahead, free for free and lock the brake band for reverse. For any speed I can slip the brake band. It all works because of the characteristics of the differential unit. Then there are the automatic gearboxes with a set of planetary gears which again , clutches bring in an out the different ratios of the planetary gear selected. I would not call these an infinite gear system as they depend on slip is one needs a variable gear. I had a moped a long time ago which had an infinite gear ration and depended on a pulley whose faces change and a belt rides the surfaces at different radii. I still do not fully comprehend the infinite action of this unit, but good luck with it.
Nice music choice! Sort of Tipper-sounding
Cool video! Wow 1995 we are getting old,but better! I have a Japanese tachometer similar to yours!
Interesting idea. If the mechanism is capable of transmitting sufficient torque, I could see this having applications in many workshop machines, like lathes, Milling machines and drills.
Mechanisms to do that have been around for 80+ years, and are in those very tools you've listed. Especially Bandsaws, mostly vertical bandsaws. It's just not in $100 harbor freight drill presses.
isnt this how automatic transmission cars works?
@@jesusvera7941no
I want to see a full-mechanical-lockup variable speed drive. There is a good reason why this is not utilized with every single adjustable-speed mechanical device on the planet right now..... and it's not the cost.
What is the cause then?
Assuming this actually works it’s basically a CVT that doesn’t constantly look like it’s about to fall apart
I absolutely love the soundtrack - best song ever maybe? AWESOME _!!!_
nice work. Nobody noticed the unidirectional clutch / bearing you used
They did not want to reveal the uni dir clutch and the eccentricity creating arm
So its like a marriage between a planetary gear and a Reeve's drive with a little magic mixed in neat
The disadvantage of such transmissions is that they are pulsed. The moment transmitted during one revolution of the drive shaft can vary from a maximum value to zero as many times as the MCA is placed around the circumference, for example, five. In this case, a complete torque pulse is transmitted in turn through each MoA, while the others at this time operate in the free-wheeling mode.
translate.googleusercontent.com/translate_c?depth=1&hl=pl&nv=1&rurl=translate.google.pl&sl=auto&sp=nmt4&tl=en&u=www.freepatent.ru/patents/2211971&xid=17259,1500000,15700022,15700186,15700191,15700248,15700253&usg=ALkJrhiKC8pdMc7LxXSNRKQEwJbGgQZCNg
So, variable - yes 😁
Wow that is one hell of video editing and a bit of engineering..... ... I think
i just can not believe someone hasn't`t come up with a mechanical variable speed transmission system that would have been excellent with the old mack trucks no smoke and effiecency out of this world
If it truly was a gearbox with "endlessly variable" ratio, it would have been worth Nobel Prize, if not more... The crappy video quality suggests the project never got any further.
Why exactly? As I understand it, it's not that hard to achieve this with differential and for example planetary gears. The real problem is mechanical loss due to friction. But hey, I am not an engineer.
@@petpaltea exactly, the losses are what you want to avoid. Basically, if the gearbox uses some kind of a slipping mechanism to achieve the "smoothnes" of variable ratio, there will always be losses within it, so instead of transferring as much power as you can, you have to waste a proportional amount of it. Plus I don't think this one actually makes the torque go up when the speed goes down, as one would expect from a gearbox... A variator is an example of a transmission with infinitely variable "gear" ratio, but the losses due to friction are still higher compared to traditional gears.
It just lets the output shaft slip.
The music fits the design, as it is awkward and inefficient and bulky and won't get repeated ever again..
Epicicloidal train gear box.
Good showed.
This is impressive design.
Basically, with a differential type mechanism the more braking force you apply to one side of the assembly the faster the other side rotates.......take all the braking force off and it will freewheel......progressively apply a braking force to one side and you have a variable speed output......a simple torque converter principle.
This feels like an Ai made upload. 🙃
You should have Ron Jeremy do narration while playing your background music.
You came too late ...we got electric now!
My first thought when seeing 1995 blueprint dates is that we're finally seeing it _now_ because somebody's patent expired.
I saw another video with the same principle and it to achieve different speeds made losing power, then a lower speeds require more power than regular transmission to deliver the same power to the wheels. it looks like the old automatic transmissions where there is a brake belt to stop the planetary gear to change next speed.
Bravo to all of this
For the detractors of the system (see the comments), practical or not, it is explained, all the automatic gearboxes work on the principle of the mechanical Differential, locking a block of the planetary differential between both speeds up the another and vice versa
Slap a 200$ VFD on the motor and you will save thousands of dollars and headache
i saw nothing there that would allow gear ratio changes.
There is, it looks like an eccentric planetary gear, not obvious though.
Indeed. "Look at this box that you can't see inside that allows variable transmission!" Almost as bad as those "perpetual motion" videos. I feel scammed. I should have guessed this was a lie before I even clicked, but you never know.
look this clip was shot in 1995. what amazes me how awesome the technology of that time is
There's really not much going on there that a well-outfitted 1890's era machine shop couldn't handle to be honest. A C96 handgun is ten times as intricate as anything seen in this video. Not to mention watches. Look into vintage machines, engines, and manufacturing capabilities and you'll realize humanity and the average mind have been heavily devolving since 1900. Gears and bearings are nothing to make. It's just the thought on how to arrange them into something new that people tend to get held-up on
@@nikolaishriver7922 damn you know your stuff... awesome
Непонятно жаль . Более подробное объяснение с демонстрацией не помешало бы .
Stupid music and no explanation of what’s going on.
2:20 check logo image on right wheel spinning whe he change position you have variation on torque and speed but the chain moving almost in same speed
this gears system are shifting gears with low energy and smooth transitions , and low impact in the gear box
Thnx for saving me the second minute
Simple. The ringgear Carries torque to the carrierbelt through a fixed frame with a set of konical gears.
@Dio Brando I'm a bit late but you can count me as one who would have asked.
Well you haven't dropped enough acid then😁
The music was as awesome as the gearing LUL
i really didn't get the point at all
except that i can see a differential and an eccentric unclear mechanism
Basically you reinvented the planetary gear, as it is used in the Toyota Hybrid engines. There it is used to combine the combustion engine (the inner rotor) with the main electric motor (which is at the outer ring). The Planets are controlled by a second electric motor, which can also work as generator (thus acting as a brake) In this combination it is a very powerful and simple gearbox with an enormous efficiency.
Or you could just drive your car with an Electric motor, save the planet and not have the problem
sploofmonkey - that's because "climatic warming is a hoax". I heard him say it. It's all to benefit the Chinese, who are way ahead I the manufacture of solar cells and turbine blades.
I agree with you - if Trump wants to "make America great", whether again or not, he should be pushing the sort of industries that will be viable in a future world, not re-opening coal mines.
good info thank you. do u if other car makers adopting this?
Lead or lithium batteries are recyclable and contained in a shell, while engines burn and puke oil, gas and metal their entire lives. The mines for lead and lithium are a fraction of the size and pollution of the mines for steel and aluminum, which are what 99% of the car is made of.
Every dollar you spend goes to energy. Whatever is cheapest is the best.
you are an industrial design agency? I have worked for consultant design agencies for several years of my working life, when we presented a concept to a client, we ALWAYS had to verbally describe what we were doing, I WISH we coulda just thrown the stuff up and turned on music!
Looks like what they put in bikes today.
Nice design! I saw a different design on TH-cam a while back that was variable and went forward to neutral and neutral to reverse . And I can't find it anymore . Maybe someone can post it again ? It would be fantastic for a car transmission no parking brake needed. engine off it won't move, srart it, and it won't move, until you actuate it into forward or reverse.
In my experience it was imposible to make a cvt using only gears
That's nice, now put it in a test bed and put it under a real load !!
This would have an application for metal lathes. Traditionally you had Kopp variators like on the Colchester Chipmaster, standard Norton style gearboxes and then VFD's. Kopp variators are good and have high torque in the low ranges similar to this, VFD's do not.
I see. That's very clever. Nicely done.
The large ring on the eccentric portion is what drives the output side by friction, but only at a small contact point between the two. Did you notice when the arm reached a certain point (about 60 degrees from start), it slowed down again? This would amazing for a bicycle hub if it could go about 6:1. I see why it never made it.
Thats not how it works. It has an eccentric planetary drive like a D drive system.
Please let me know are you producing this product
MM Industrial Design should be responding to comments/questions here. For instance, how does it really work? Is this gizmo different from the D-Drive?
From 0:13 to 0.16, the sun gear seems to be off-centered. Is that what you are doing on the physical system from 1:15 to 1:18? I don't gear how your speed can vary with this manupulation
It's fake to lure investors
@@KlaasDeSmedt
It looks more like a Mechanical Engineering university project to me.
2:20 check logo image on right wheel spinning whe he change position you have variation on torque and speed but the chain moving almost in same speed
this gears system are shifting gears with low energy and smooth transitions , and low impact in the gear box
The audio track drove me away.
I need one of these if it can achieve 98% efficiency in super thin oil. I need 1:1 to 2:1 gear ratio adjustability. I am only spinning a VAWT wind turbine at 40 to 80 RPM.
Para os detractores do sistema (vê-se nos comentários),prático ou não, cabe explicar-se,todas as caixas de velocidades automáticas funcionam sobre o princípio do Diferencial mecânico,travando-se um bloco de planetários o diferencial entre ambos acelera o outro e vice-versa
Two planetary gearsets into a third planetary gearset is how this functions. And yes, a differential is a form of a planetary gearset, just coaxial rather than planar. Gearsets 1 and 2 are driven by the same ring. There's somehow variability between the planets themselves, which is probably why there's no solid carrier and the planets are hinged on the carrier, which would explain the eccentric drive to induce variability. Then each sun drives a side gear, and the spider/satellite gears drive the output shaft. A 1:1 ratio between the two planar planetary sets will achieve highest speed, but changing the ratio where set 1 favors rpm and set 2 favors torque, you'll get a lower output speed with increased torque. With a 1:1 ratio between the planar planetary sets, the spider/satellite gears in the coaxial planetary set remain stationary and spin the shaft at the 1:1 input speed, but once that ratio deviates from 1:1 the spider/satellite gears will begin to spin on their axis as the side gears are not rotating at the same speeds. Think of a differential working in reverse, rather than driving a ring gear to drive two outputs that can differentiate, you're driving two inputs that can differentiate to drive a singular output.
The only thing I have yet to figure out is how the planets themselves actually work and how they attain variability. Typically a setup like this would drive the components in a different way; there's an old GM video from the mid 20th century that achieves this by driving the ring and sun of a planetary gearset individually with the rotation of the planet carrier being the output, where the planetary gears themselves provide the variable function by rotating in a circle yet being able to slip on the shafts that connect them to their carrier. What's interesting is that all three planets are engaged with both the ring and sun, no matter the eccentric offset of the components, and I believe the planet carrier itself is entirely stationary. I don't understand where the variability is coming from, unless there's components not being shown in this. The drawings at the start are way too blurry, but it might be possible there's actually four planar planetary sets, or one planetary set is split between a ring-planet and planet-sun sets with the eccentricity of the planets somehow playing into this, but it looks like the planets themselves are meant to be coaxial, but the drawing implies eccentricity between planet-r and planet-s. Maybe this is where the variability comes from, less eccentricity between planet-r and planet-s provides higher speed, but how this is actually driven, I'm not sure.
I also cannot find any more information on this specific gearbox, or anything similar to it's concept. I guess it'll remain a mystery. Most I can find is that it's a bicycle transmission with 4:1 being the max ratio, and that there's supposedly a patent that I cannot find.
I suspect there's some frictional component involved clamping one of the outputs from the planetary shafts to "control" the speed of the driven shaft (the shaft being monitored). In the clip with the hand-held tachometer as he's moving the lever over the gearbox, we can see the revs increase, and then decrease again towards the end of the anti-clockwise motion of the lever, and then he moves the lever back the other way (clockwise), we see the revs still decrease further, which is completely counter-intuitive. If the output revs are increasing then decreasing in one direction (maybe there's a frictional maximum point there somewhere?), then why are they decreasing still when moving the lever back in the other direction? I'd warrant that he hadn't moved it clockwise far enough to re-engage the friction component yet. That all implies that it's not doing anything like a directly ratioed CVT at all, and is just doing some friction based design that loses efficacy as it wears and/or as friction device moves away from the point of maximum resistance. We see at some point in the video that there is some rotational offset mechanism that can be used to move some framework closer to, or further away, from the output shafts, so this again in my mind confirms my suspicion that he's just providing some frictional clamping on one of the output shafts to effect variability in the measured output shaft.
We like to buy this design
neat. Felt like a music video for the song, but interesting.
mmmm, ya, now it makes sense, i didnt see the oscilloscope display the first time, duh! its just right there in front of my face. thanks ;-)
@Shoestring Stacker yes, i have a Nissan Altima with only 92k miles and the CVT doesn't feel the same as it used to. Im guessing ill have to rebuild it before 100k, well at least the car gets awesome millage, making up for the week transmission, thats on of the reason why the millage is good, light-weight transmission. Thanks for the awesome comment!
@Shoestring Stacker 1.2L? are you sure? that is like 2 Vespa engines bro!
Mitsubishi stock stereos are actually really good, my 2015 Nissan Altima SV 2.3L has good sound, but the rear 6x9 speakers are 50 watt at 2 ohms! (2 ohms? WTF?), so the bass sucks ass bad, 2 ohms is not enough resistance unless your putting the speaker in a sealed box or using a quality amplifier, but i still say its a bad idea, your better off over-loading speakers; then an amplifier.
The problem is the speaker is too efficient and moves way too much creating a lot of volume, even at low volume and the bass turned all the way down; the speaker is too efficient and moves so much that bass volume does not match the other frequencies.
(this is also a good way to blow your amplifier, using speakers with very low resistance)
nice, good amp! and yes, Im talking about impedance basically, impedance is the ohm measurement for an output though, like a pre-amp, but same thing we are talking about. I used to work for Harmon and Kardon building amps and eq's back in mid 80's, i used my employee discount to order some auto amplifiers (we only made home units) anyway, I had two JBL 180 watt amps in the back and a kenwood 4 channel amp under the seat to power the front speakers. Total I had 21 speakers (including the 3-way / 4-way speakers counted as a separate speakers) so i had some 3 inch 3-way blaupunkts in the dash, some kenwood 4-way 5 inch in the doors, some 7x10 (6x9 adapting brackets) kenwoods in the back (4 way) and 2 12 inch JBL subwoofers in a band-pass box i had to support with my car jack in a VW Golf, all at 4 ohms except the 2 woofers I ran in series to get 2 ohms, man the fucking car cranked! only 1100 watts, but all RMS!
@Shoestring Stacker oh snap, dont have that car anymore, I have my Nissan Altima now. I build my own systems, I love it, take care buddy
Wow, what a lot of nay-saying! Internet is good for that to be sure. Cannot say much about your engineering, don't know your intent, but the music was swEET! I added to my music list. One man's Mozart, another's Stravinsky perhaps, but I dig it. Thanks for sharing!
WOW! He discovered a planetary gear set!!! LOL!!!
For a planetary gear to vary it's speed it needs 2 rotational power sources. This can vary the speed of one power source continuously. Yet it seems the range of speed ratio change is very small
Just simply checkout e-cvt, toyota hybrid drive...
Agreed, but I don't see the two motors.(MG1, MG2) I don't see the wiring needed, to supply or recirculate the current between the two motors. In the E-CVT, the differential carrier is part of the final drive, not the epicyclic gear set.
It struck me as similar to that, as well. Here you are able to shift the planet gears so they are asymmetrical to change the torque split between left and right halves of the diff. Pretty interesting. No, it isn't using conical gears, as some have said, and it isn't using friction, as far as I can see. Changing ratios by changing radius of the planet carrier. Actually pretty clever.
So in a sense it is a constant speed drive or CSD. Its used in aviation on the engines for the generators or anything that requires a constant speed. Interesting tho
Увеличение крутящего момента ценою потери мощности на результирующем валу. Ну, не знаю... возможно в кондиционерах найдётся применение, для плавной регулировки скорости вращения вентилятора, только... электрическая регулировка - эффективнее.
What is the overall ratio range that it can achieve?
This is brilliant, but please for the love of baby Jesus get rid of that noise. People looking at this are intelligent & don’t appreciate the added noise. Thank You & have a great day.
Nice music. My IQ dropped 30points.
Do you know what song this is?!?!? Please share!!
To those who doint like music turn the sound off. It is visual!
It was invented in Russia in 1977. A.A. Blagonravov "Mechanical stepless transmissions of a non-friction type". The Australian company repeated its experiments 20 years later. Apparently, investors refused to invest in this invention because of too little efficiency. Russia has a tremendous potential in developing ideas and does not know how to bring them to realization. Therefore, most inventions flow to the west where people know how to make money.
Это изобретено в России в 1977 году. А.А Благонравов "Механические бесступенчатые передачи нефрикционного типа". Австралийская компания повторила его эксперименты спустя 20 лет. Видимо инвесторы отказались вкладывать в это изобретение по причине слишком слабого КПД. Россия имеет гигантский потенциал в разработке идей и совершенно не умеет их доводить до реализации. Поэтому большинство изобретений утекает на запад где люди знают как делать деньги.
Finally some history on the invention's origins. Thanks for sharing!
Ausgezeichnet toll
Need specs light torque, speed range, efficiency.
I’d like to see the working principal and machining/build video before I believe this to be an actual working machine.
It doesn't look like a working machine. How does the eccentric ring fit in the case? The revolutions change only when a person controls the lever, and then they stop.
Lækkert 👍🏁❤️🇩🇰
The person who came up with this is one smart person. Hats off to them. What a great trans. Don't know why its not in production on something now?
EH? from what I've seen - now 1/2 brain asleep from music - nothing new here at all - Epicyclics and Diffsand duff music. Pity. I hope this is constructive criticism
i felt a bit dumber after listening to the soundtrack....
no way that shit rocks like kraftwerk meets buckethead
Wow I have not laughed so hard
Very clever! Does it work under high load?
It doesn't, which is why this idea was abandoned ages ago.
Oh good , another music video.
Brilliant idea from a genius but sadly outdated as we now have Electric Motors for propulsion
Was ich verstanden habe: 1) Ziel: Ein CVT (continously variable transmission) Getriebe zu bauen. 2) Es existiert ein Prototyp (immerhin) 3) Ein gewisser Effekt ist messbar 4) Das Ding besteht im wesentlichen aus einem Differential, einem Planetengetriebe und einer Exzenterscheibe. Was ich nicht verstanden habe: 1) Das Video ist von 1995!! Sollte das Getriebe einen Vorteil verglichen mit existierenden Lösungen haben, wäre es schon lange am Markt. Also: wo ist der Haken? 2) Wie funktioniert es? Wozu dient die Exzenterscheibe? Der Funktionsmechanismus erschliesst sich mir nicht aus dem Video.
el sistema de diferencial si se usa en vehículos pero todo el sistema puede usarse o se usa en algún vehículo automotor? Derrepente como remplazo de caja de cambios?
Why is everything a music video these days? Grow up, people.
I suppose it goes back to the old radio days when "dead air" was forbidden. Listeners would assume the station went off the air and changed channels.
nice drive for low speed applications ,
Look up Torotrak:
en.wikipedia.org/wiki/Continuously_variable_transmission
Here's a quick IQ test. If you dislike the music, you're not too bright. That's it. That's the end of the test. Enjoy!
Are you going to show us how it works?
Unable to comment on the idea, because the idea was carefully concealed.
Carefully concealed dual speed & projected as continuous variable speed.
Applications? My ole man wants to put one on a Custom Harley Scrambler
Is perfect
If I understand what I saw, there is too much loss of energy when the system is clutched/braked. This old mechanical idea has been around for over 100 years. Nothing new here.
Can we have a 5 year update?
I really like the soundtrack! I haven't been able to dig up any information about it, so please tell me!
Yea I love it..the beginning reminded me of kraftwerk then it got funky has a nice groove
du hast erfasst ! rad und die räder kraft ! und die fliehkräfte - physik
müsst ihr kapieren , mit den VEKTOR - KRÄFTE . mfg FELIX WÜRTH - DE
...i love it all...just on spite...
A video that does not explain anything with horrible noise.....
Reminds me a little bit to the constant speed drives that are used in aircraft engines to get the proper generator speed.
Not possible to endlessly variable gear if the gears have same diameter. But if you somehow can change the diameter and center of the gearwheel you can make such a gearbox 🙂
lol. don't bother...it is a differential..nothing else.
Nice work, I wish see that for sel to buy it, it very interesting and good than nuvinci cvt