Hi Robert, just a quick reminder about variable transmissions, in the mid to late 70s Daf/volvo produced a little car with this variable transmission the Daf 66. This little car was around for some years as i recall. I remember working in a scrapyard in them days and we had broken several them the old belt variable drive which was so different at the time, just thought you may be interested. Very informative and interesting videos most enjoyable.
Wow! I cant believe the effort you put into this chanel, we get quality content almost every single day, I don't know where you manage to find the time and ideas!
amazing that you should make this video right now! i've spent the last few days dreaming up a very similar solution to the ratchet, using one way bearings and chain and sprocket instead of the pawl, to build a velomobile with linear 'pedalling' mechanics. the infinitely variable transmission is an incredibly inspiring and appealing addition to the equation. THANK YOU! i'll have to think about how i might be able to add it in. in my application, a further addition of a simple pendulum linkage could adjust the gearing automatically based on the elevation gradient. all mechanically controlled. wild and amazing! thank you for being such an inspiration Rob!
Off topic I love your channel it reminds me of my grandads shed when I was a kid he would show me tinkering and fixing machines for poor people in the neighbourhood. Thank you and I appreciate you. 🙏💙
Hi Robert, I live in rural South Australia, and I have both solar and wind. If I had wind only I would need a massive battery bank to bridge the power divide. My 15 Kw solar array charges my car runs the house and charges my 8 kw battery bank. Even a massive turbine wouldn't be cost effective as my wind resource is just too intimiternt, as you say it's horses for courses, the best solution for me was cheap second hand panels and Lifepo4 batteries. The wind comes in handy on the occasional night when wind speed is high. It's about one night a month. Love your video, all the best, one old tinkerer to another.
the ratchetting system a wonderful example of mechanical 3-phase power transmission... (x2 for continuous bidirectonal linear translation converted to continuous rotation).
In the 1970’s a TV show air in Sydney Australia demonstrated a ACVT that was a liquid. When a voltage was passed through it it would start to become solid. The liquid was placed between two plates. One plate was the drive plate and the other was the driven plate. With no voltage applied the driven plate will not turn when the drive plate rotates. As the voltage is increased the liquid becomes more viscous and the driven plates starts to turn. If the weight placed on the driven plate is too great the liquid “breaks” marginally, the driven plate slows. Increase the voltage the liquid becomes even more viscous transmitting more rotational effort from the drive. Eventually, the voltage passing through the liquid causes the liquid to become a solid and totally variable. The weight that could be lifted, pushes or pulled is relative to the diameter of the plates. It showed a demo of this ACTV device connected to a crane it was able to lift and hold a 1 imperial ton load. The other advantage was it ability to dissipate heat be cause the liquid surrounding the two plates was still a liquid and thus easily cooled via a radiator. I wonder what happened to it.
Either it was too expensive to manufacture, or it might have been a suspension that separated over time, thixotropically, or under shear strain. Shear thinning or shear thickening are by definition, non-newtonian behavior of susceptible fluids.
Sorry to rabbit on, but it occurs to me that if a system had two stable fluid transmission systems, one with a shear thinning fluid, and another with a shear thickening fluid, it could be dialed in to be self-regulating on power output without any sort of external governor. If the fluids were immiscible, and had a density difference, perhaps they could even be contained within the same apparatus.
@@grunwode No, in simple terms there is just one container. The two plates are immersed in the fluid. Only that fluid that is between the plates is affected. A low voltage affects only a small portion of the fluid and,as the voltage is increased more fluid between the plates is affected. The fluid that is not between the plates circulates about the container from the rotation of the plates. The container is the radiator. The object is; the rotation of drive and driven is 1:1 that would equate to “final drive” with the differential would as it it is presently provide the final gearing as it presently does in motor vehicles. If driven plate is rotating slower that the drive plate, a greater voltage is applied to the plates. A sedan would have a smaller plate than a truck. While different levels of voltage would be available the car and truck.
I liked the angle shifting transmission mechanism that was shown earlier. That would probably be compatible with the spring-loaded tail assembly dampener of the old Aeromotor type mechanical windpumps. However, I'm not sure if one would want the demand to control the transmission, or the supply. The variance in supply on a windmill can change very quickly.
- however friction devices - have drawbacks - though the friction element can act as a mechanical fuse - preventing the system from self destruction... pro's and cons..
Looks like a 'Walschaerts valve gear' to me which was a ctv for steam engines that also provided a reverse phase, so it had maximum power or efficiency going forward or reverse without disengaging from the engines power.
I have been enjoying your videos immensely. My intuitions make me think there would be some pulsation in this mechanism. One question I have is how do they smooth out any oscillations in the power transmission? Meaning, how do they smooth the variations of speed due to the circular to linear power transmission?
Wow, i am on ebike project. I have that one way gear and i think i could control the ratio since i use microcontroller. I also got ir distance sensor to read the pin position. It ll be e-cvt😮
Was looking for ways to couple a rotary or vertical vane to measure and automatically adjust the dual cone commutator. Any ideas that are super finessed? Would need gravity or tension or magnetics to hold in base start ratio. Would be nice if it could increase power to alternator coils simultaneously to increase output and resistance. Just thought of centrifugal mass pulling at a 90 lifting the "golf ball" Thanks
Instead of skate bearings you can use flanged sintered bronze bushes, in fact plain bearings, which are simpler, smaller, easier to fit and often cheaper in acquisition and maintenance.
I would go so far and use something like iGlide filament, and then print whatever bearing surfaces I needed. I bet with the size of his channel Igus would send him a pile of 3DP filament materials samples. They're always interested in new applications/markets for their materials - some would say this is a pretty good sized and fairly captive market for the channel; modern vendors realize and foster that.
@@russellzauner My experience with Igus bushings is mediocre: fragile, broke often when inserting, &c. Printing them ? Maybe with a multi-head, i.e., multi-material, printer.
@@peterfelecan3639 You need to use the right materials for the right applications. Did you have them help you or did you just order stuff without talking to them? Also, I used them for many other spot fixes and little bits that I didn't want to lubricate/clean all the time; things I wanted to stay slippery/smooth, without maintenance, and long wear life. I simply trusted that if I needed to replace the bearings in my front loaders hydraulic arms that they didn't FAKE the extensive testing and demonstrations they've published using heavy equipment. I've sent your concerns to Igus but that's all the effort I'm going to give to a random anecdote on the internet. I'll check it though, it's easy enough. We'll see what's up with your complaint.
@@ThinkingandTinkering I am over the moon that you replied to my comment! I think I should rephrase my question then. Was there a video of it being completely assembled?
What about a variable magnetic field on the generator or a variable length serpentine? Could that be a direction to solve the problem on wind generation stabilization without risk of overheating and less mechanics that could break?
- h ha - ever since the original honda odessy (or was there an earlier incarnation - ok, yes it goes all the way back to the steal and wind age.... lol, the old becomes new again.
What about making the distance between magnets and spole in the wind mill generator variabel instead then it could all be mechanical self adjusting using the centrifugal force. Unfortunately I can't remember the name of the unit with the 2 arms flipping out when rotating
Two more variable speed drives you should look at, the Beier Variator and the Zero-Max Adjustable speed drive. I have used both very successfully though the Zero-Max is unforgiving when overloaded.
hi robert another great video i would like to ask if you could do a video at some point on how to make a dryer for a hho cell i do not know if you have already done this already but could you let me know if you have and i will go and watch it thanks
Just curious about the parts that you printed using your 3d printer: Did any parts require any CA glue or are they holding up as is after being printed?
Stuff that messing about. Use the idea of the first cvt motor box. Which used cones and a belt. Yes not as efficient , but easier to make and maintain , also you can use gearing on the output to increase either speed or torque
Looking at all the sliding, geared, racked parts made me think of a book I had (twice) that is actually not only obscure but the author really didn't want to write it. Antonin Svoboda preferred his treatises to be mind crushing pure theoretical logic, which is how I learned of him. One of my managers from a previous life showed me one of the manuscripts, photocopied (maybe even drum copied or faxed lol), which instantly gave me a headache. He smiled, and said "well you asked where I was getting inspiration for my designs/patents, this is one source but it's nearly unreadable". I noted the author and looked for works that I could kind of understand when I happened upon a Dover book (not an affiliate) that was clearly written in plain, easy to understand language (even if I can't comprehend 90% of the deeper math/engineering), so I picked it up. I loaned it to a mechanical engineer that was working on a wafer loader/handling design for semiconductor fabrication and never got it back. I found another volume at a bookstore that was part of a bigger series, hard cloth bound, with pullout nomograms, much nicer than the one I had although much less convenient to carry around and study. The text's title is Computing Mechanisms and Linkages by Antonin Svoboda There are a couple copies on archive dt org and I apologize in advance for your lost hours because I can barely read the thing and I still spent months staring at it until the book got packed somewhere in a move. When I can finally understand more of it I'll get another copy because there's nothing quite like it. If I say any more I might spoil some of the surprises so I'll stop there.
What about skipping the gearbox and using a spring / counterweight system on the props to maintain a specific RPM? Springs to keep the pitch course until the counterweights kick in bringing the blade finer and finer until the desired rpm is reached. Would also help prevent an overspeed situation.
Are you sure variable gearing makes sense in a wind turbine? More torque is required to increase speed. When the wind speed is low, the input torque will also be low. Regardless, more moving parts means more friction.
Wouldn't it be a bad thing that the more stuff you throw into it then the less you will get out due to friction, torque, etc??? I mean there is nothing 100% efficient so would it give us more than the loss the contraption added?
@@ThinkingandTinkering I didn't mean this I meant in general. If we have a 20% loss, or even a 3% loss, are we going to get more than the loss the contraption adds? That is what I was asking.
@@ThinkingandTinkering Sure, as I am sincerely interested. You know there is absolutely nothing on this planet that is 100% efficient and with that cool part you demonstrated in the vid you said it was about 80% efficient. Now that was what you made, but it applies to everything, even NASA made contraption, only the efficiency should be better. Let's use your 80 percent for this. That means there is a 20% loss. I am thinking like a VAWT and how it would use a transmission to go from vertical to horizontal. That transmission will induce a loss (in this example, that would be 20%). Wouldn't it be better to just go horizontal? I just think we are ending up with some really cool contraptions that in the end makes it less efficient and is a Rube Goldberg type mechanism. It would be akin to saving 10 mpg in a car, but it used 15 gallons more than just doing a direct drive instead. I understand the theoretical as long as chasing after it gets us to actually save more than we use with it.
@@generalawareness101 ah ok - thank you for that mate - i understand - the efficiency I quoted was for all friction transmissions of this type not the one i made - that is it is the understood figure for friction transmissions even if they were superbly machined by anyone including NASA. It's the problem with friction transmissions. The reason you use a continuously variable transmission (CVT) is it best matches the rotor speed to the generator speed for all wind conditions so the loss in efficiency in transmission is often made up by the overall machine efficiency in converting wind to electrical power - bear in mind most wind turbines as total machines are only around 30% efficient - if you use a CVT that has a higher efficiency than a cone type friction transmission the efficiency can go even higher such that the total machine efficiency is raised above the total machine efficiency of just using a gear set - this is why automobile manufacturers are crazy for this tech
If electro magnets were used on the wind turbine generator could not a variable matched drive be achieved by altering the magnetic field of the coils with electronics, monitoring speed and electrical power, similar idea to MPPT.
Who is the poor guy assigned to sit by the gear shift 24 hours a day to shift it, since the wind is variable too? The nice thing about the pulley/belt version is that it has spring loaded pulleys that self adjust due to the torque. I think.
Could you look at toroidal gearboxes. I used to work for Torotrak as a designer and their gearbox with the compression plasticising Shell oil was something really interesting and would make a great tinker cad model!
Is that a conical drive at your right elbow? Did I miss an episode? I've had this design in my head for years and always wondered if I was breaking some rule of physics and was wondering why someone hasn't invented it yet... and there it is... as long as it's what I think it is.
yes - we call it heath robinson - but if you think this is over complicated you haven't seen many CVTs lol - I joke - of course - you should also remember this was made this way as a teaching aid for how ratchet CVTs work - a final model would be more compact and less obvious - but harder to teach from
I appreciate the versatility of 3d printing, but not being able to afford computers, let alone a 3d printer. Your videos for a while have been of little utility for me.
really? I find that odd as the videos have nothing to do with 3d printing - sure I use a 3d printer but it is just a tool to get something done - this video is about ratchet variable transmissions - i use the 3d printer to explain the logic and construction of them - you can make them anyway you want if you use the logic - i am sorry you don't find that useful
I do find it in part useful, but every video has the associated tinker cad file. Which I have no way of accessing it, so it seems like getting half the info. I find it easier to get a deeper understanding of principles when I can actually spend time looking at the renders and specifications.It's not your responsibility. Just wanted you to know how it came across to me and possibly others
Hi Robert, just a quick reminder about variable transmissions, in the mid to late 70s Daf/volvo produced a little car with this variable transmission the Daf 66. This little car was around for some years as i recall. I remember working in a scrapyard in them days and we had broken several them the old belt variable drive which was so different at the time, just thought you may be interested. Very informative and interesting videos most enjoyable.
Thankyou for your incredable output in producing these fascinating videos, very much apprecieated
cheers and all the best
Just know 1974 will be the best video ever! Born in 74! And anything made in 74 ended up lasting!
Wow! I cant believe the effort you put into this chanel, we get quality content almost every single day, I don't know where you manage to find the time and ideas!
amazing that you should make this video right now! i've spent the last few days dreaming up a very similar solution to the ratchet, using one way bearings and chain and sprocket instead of the pawl, to build a velomobile with linear 'pedalling' mechanics. the infinitely variable transmission is an incredibly inspiring and appealing addition to the equation. THANK YOU! i'll have to think about how i might be able to add it in.
in my application, a further addition of a simple pendulum linkage could adjust the gearing automatically based on the elevation gradient. all mechanically controlled. wild and amazing! thank you for being such an inspiration Rob!
Off topic I love your channel it reminds me of my grandads shed when I was a kid he would show me tinkering and fixing machines for poor people in the neighbourhood. Thank you and I appreciate you. 🙏💙
you've got to love mechanical engineering. great video as always 👍
Hi Robert, I live in rural South Australia, and I have both solar and wind. If I had wind only I would need a massive battery bank to bridge the power divide. My 15 Kw solar array charges my car runs the house and charges my 8 kw battery bank. Even a massive turbine wouldn't be cost effective as my wind resource is just too intimiternt, as you say it's horses for courses, the best solution for me was cheap second hand panels and Lifepo4 batteries. The wind comes in handy on the occasional night when wind speed is high. It's about one night a month. Love your video, all the best, one old tinkerer to another.
the ratchetting system a wonderful example of mechanical 3-phase power transmission... (x2 for continuous bidirectonal linear translation converted to continuous rotation).
That's probably the same CVT in my Toyota! Thanks for the upload
In the 1970’s a TV show air in Sydney Australia demonstrated a ACVT that was a liquid. When a voltage was passed through it it would start to become solid. The liquid was placed between two plates. One plate was the drive plate and the other was the driven plate. With no voltage applied the driven plate will not turn when the drive plate rotates. As the voltage is increased the liquid becomes more viscous and the driven plates starts to turn. If the weight placed on the driven plate is too great the liquid “breaks” marginally, the driven plate slows. Increase the voltage the liquid becomes even more viscous transmitting more rotational effort from the drive. Eventually, the voltage passing through the liquid causes the liquid to become a solid and totally variable. The weight that could be lifted, pushes or pulled is relative to the diameter of the plates. It showed a demo of this ACTV device connected to a crane it was able to lift and hold a 1 imperial ton load. The other advantage was it ability to dissipate heat be cause the liquid surrounding the two plates was still a liquid and thus easily cooled via a radiator. I wonder what happened to it.
it was ferrofluid i believe
Either it was too expensive to manufacture, or it might have been a suspension that separated over time, thixotropically, or under shear strain. Shear thinning or shear thickening are by definition, non-newtonian behavior of susceptible fluids.
Sorry to rabbit on, but it occurs to me that if a system had two stable fluid transmission systems, one with a shear thinning fluid, and another with a shear thickening fluid, it could be dialed in to be self-regulating on power output without any sort of external governor. If the fluids were immiscible, and had a density difference, perhaps they could even be contained within the same apparatus.
@@grunwode No, in simple terms there is just one container. The two plates are immersed in the fluid. Only that fluid that is between the plates is affected. A low voltage affects only a small portion of the fluid and,as the voltage is increased more fluid between the plates is affected. The fluid that is not between the plates circulates about the container from the rotation of the plates. The container is the radiator. The object is; the rotation of drive and driven is 1:1 that would equate to “final drive” with the differential would as it it is presently provide the final gearing as it presently does in motor vehicles. If driven plate is rotating slower that the drive plate, a greater voltage is applied to the plates. A sedan would have a smaller plate than a truck. While different levels of voltage would be available the car and truck.
Wow, i like your videos. Good job on passing your knowledge to younger generation👍
Nice.....Thank you RMS. Such give ideas to the young minds...Thank you DVD:)
awesme mate
@@ThinkingandTinkering Always appreciate your videos...O! nice that Luke took his @#$% hat off..lol DVD:)
I liked the angle shifting transmission mechanism that was shown earlier. That would probably be compatible with the spring-loaded tail assembly dampener of the old Aeromotor type mechanical windpumps. However, I'm not sure if one would want the demand to control the transmission, or the supply. The variance in supply on a windmill can change very quickly.
- however friction devices - have drawbacks - though the friction element can act as a mechanical fuse - preventing the system from self destruction... pro's and cons..
This is genius.
cheers mate
Thanks for your video
Most welcome
Another great video!
Glad you like them!
Sir, you are a Gem.
I just stumbled on something you might consider in your designs - ferrofluid magnet bearing.
I hope it will come in handy.
Cheers mate! 😀
Thanks for the idea!
Looks like a 'Walschaerts valve gear' to me which was a ctv for steam engines that also provided a reverse phase, so it had maximum power or efficiency going forward or reverse without disengaging from the engines power.
Wonderful, I heard every word.
awesome
Loud and clear.
awesome
Another Great video...
Thank you :)
cheers mate
I have been enjoying your videos immensely.
My intuitions make me think there would be some pulsation in this mechanism.
One question I have is how do they smooth out any oscillations in the power transmission? Meaning, how do they smooth the variations of speed due to the circular to linear power transmission?
Wow, i am on ebike project. I have that one way gear and i think i could control the ratio since i use microcontroller. I also got ir distance sensor to read the pin position. It ll be e-cvt😮
Excellent
Thank you! Cheers!
Was looking for ways to couple a rotary or vertical vane to measure and automatically adjust the dual cone commutator. Any ideas that are super finessed? Would need gravity or tension or magnetics to hold in base start ratio. Would be nice if it could increase power to alternator coils simultaneously to increase output and resistance. Just thought of centrifugal mass pulling at a 90 lifting the "golf ball" Thanks
Thanks!
cheers mate
I made a wheels type cvt once. The wheels surfaces we're short bristles. This acted like gears that had a continuous mesh.
i made a bristle based ratchet a few months ago - it worked well - a much poorly understood method mate with a lot going for it
with so many parts, will it really be more efficent than the cones ?
yes
Thanks and sorry, I get it now with that animation.
Would it be possible to connect one of these wonderful doohickeys of yours to a gyroscopic flywheel for energy storage?
Instead of skate bearings you can use flanged sintered bronze bushes, in fact plain bearings, which are simpler, smaller, easier to fit and often cheaper in acquisition and maintenance.
I would go so far and use something like iGlide filament, and then print whatever bearing surfaces I needed. I bet with the size of his channel Igus would send him a pile of 3DP filament materials samples. They're always interested in new applications/markets for their materials - some would say this is a pretty good sized and fairly captive market for the channel; modern vendors realize and foster that.
cheers mate
Where do you get those? Amazon?
@@russellzauner My experience with Igus bushings is mediocre: fragile, broke often when inserting, &c. Printing them ? Maybe with a multi-head, i.e., multi-material, printer.
@@peterfelecan3639 You need to use the right materials for the right applications.
Did you have them help you or did you just order stuff without talking to them? Also, I used them for many other spot fixes and little bits that I didn't want to lubricate/clean all the time; things I wanted to stay slippery/smooth, without maintenance, and long wear life. I simply trusted that if I needed to replace the bearings in my front loaders hydraulic arms that they didn't FAKE the extensive testing and demonstrations they've published using heavy equipment.
I've sent your concerns to Igus but that's all the effort I'm going to give to a random anecdote on the internet. I'll check it though, it's easy enough. We'll see what's up with your complaint.
Hi Robert, great vid 👍 I got no audio coming in from the notification but it worked fine from my subs page
you tube error - apparently fixed now
Fun stuff as always. Did I miss something with the Darwin wind turbine? I feel like it got forgot
nope - there is just not a lot to add to the darwin right now mate
@@ThinkingandTinkering I am over the moon that you replied to my comment! I think I should rephrase my question then. Was there a video of it being completely assembled?
What about a variable magnetic field on the generator or a variable length serpentine? Could that be a direction to solve the problem on wind generation stabilization without risk of overheating and less mechanics that could break?
... and you figured all that out, what, overnight?!
yes lol
Hey Robert, there are several 4-wheelers that use a belt with the cones, for their transmission.
- h ha - ever since the original honda odessy (or was there an earlier incarnation - ok, yes it goes all the way back to the steal and wind age.... lol, the old becomes new again.
Ooh.
I've just thought of a hand drill for people with hand complaints that keeps constant downward pressure.
What about making the distance between magnets and spole in the wind mill generator variabel instead then it could all be mechanical self adjusting using the centrifugal force.
Unfortunately I can't remember the name of the unit with the 2 arms flipping out when rotating
Two more variable speed drives you should look at, the Beier Variator and the Zero-Max Adjustable speed drive. I have used both very successfully though the Zero-Max is unforgiving when overloaded.
hi robert another great video i would like to ask if you could do a video at some point on how to make a dryer for a hho cell i do not know if you have already done this already but could you let me know if you have and i will go and watch it thanks
Did you know that your "shorts" videos are not as visible as your regular videos?
I completely missed them. Time to rewind and go back to watch them.
...do you parentblood Hannibal(the actor actually rsrs)
Just curious about the parts that you printed using your 3d printer: Did any parts require any CA glue or are they holding up as is after being printed?
no glue was painted over them mate
Stuff that messing about. Use the idea of the first cvt motor box. Which used cones and a belt. Yes not as efficient , but easier to make and maintain , also you can use gearing on the output to increase either speed or torque
you can if you want - there are a ton of ways to go - depends what you want really
So what's the range of the transmission? How do you calculate it?
it's infinite mate and it is the ratio of the bar length at any one time - but you can pretty much set it to anything in between
Looking at all the sliding, geared, racked parts made me think of a book I had (twice) that is actually not only obscure but the author really didn't want to write it. Antonin Svoboda preferred his treatises to be mind crushing pure theoretical logic, which is how I learned of him. One of my managers from a previous life showed me one of the manuscripts, photocopied (maybe even drum copied or faxed lol), which instantly gave me a headache. He smiled, and said "well you asked where I was getting inspiration for my designs/patents, this is one source but it's nearly unreadable". I noted the author and looked for works that I could kind of understand when I happened upon a Dover book (not an affiliate) that was clearly written in plain, easy to understand language (even if I can't comprehend 90% of the deeper math/engineering), so I picked it up. I loaned it to a mechanical engineer that was working on a wafer loader/handling design for semiconductor fabrication and never got it back. I found another volume at a bookstore that was part of a bigger series, hard cloth bound, with pullout nomograms, much nicer than the one I had although much less convenient to carry around and study.
The text's title is
Computing Mechanisms and Linkages
by Antonin Svoboda
There are a couple copies on archive dt org and I apologize in advance for your lost hours because I can barely read the thing and I still spent months staring at it until the book got packed somewhere in a move. When I can finally understand more of it I'll get another copy because there's nothing quite like it. If I say any more I might spoil some of the surprises so I'll stop there.
cheers mate
What about skipping the gearbox and using a spring / counterweight system on the props to maintain a specific RPM? Springs to keep the pitch course until the counterweights kick in bringing the blade finer and finer until the desired rpm is reached. Would also help prevent an overspeed situation.
build a model mate - i would love to see it
An i crazy or could you use something like this to get a rotating output from your Stirling engine?
yes you can
Could you use a second scotch yolk instead if a ratchet ( quiter perhaps ) thanks for you video.
At 5mins 50 seconds i spat ot my coffee lol.
Are you sure variable gearing makes sense in a wind turbine? More torque is required to increase speed. When the wind speed is low, the input torque will also be low.
Regardless, more moving parts means more friction.
loads of research on it mate - checkout google scholar - tbh i just go by that
But what is the OVERALL EFFICIENCY?
How long people wait for Amazon delivery? One month in, they haven't delivered and shift the date to up to one month away :(
get a refund mate
@@ThinkingandTinkering I did twice already, making sure it's a different vendor. I guess being remote is a curse.
Refresh for sound.
cheers mate
Wouldn't it be a bad thing that the more stuff you throw into it then the less you will get out due to friction, torque, etc??? I mean there is nothing 100% efficient so would it give us more than the loss the contraption added?
this is just a teaching model mate - ratchet CVTs are already in use
@@ThinkingandTinkering I didn't mean this I meant in general. If we have a 20% loss, or even a 3% loss, are we going to get more than the loss the contraption adds? That is what I was asking.
@@generalawareness101 I am sorry mate I am missing what you mean - can you explain a bit more for me? cheers
@@ThinkingandTinkering Sure, as I am sincerely interested. You know there is absolutely nothing on this planet that is 100% efficient and with that cool part you demonstrated in the vid you said it was about 80% efficient. Now that was what you made, but it applies to everything, even NASA made contraption, only the efficiency should be better. Let's use your 80 percent for this. That means there is a 20% loss. I am thinking like a VAWT and how it would use a transmission to go from vertical to horizontal. That transmission will induce a loss (in this example, that would be 20%). Wouldn't it be better to just go horizontal? I just think we are ending up with some really cool contraptions that in the end makes it less efficient and is a Rube Goldberg type mechanism. It would be akin to saving 10 mpg in a car, but it used 15 gallons more than just doing a direct drive instead. I understand the theoretical as long as chasing after it gets us to actually save more than we use with it.
@@generalawareness101 ah ok - thank you for that mate - i understand - the efficiency I quoted was for all friction transmissions of this type not the one i made - that is it is the understood figure for friction transmissions even if they were superbly machined by anyone including NASA. It's the problem with friction transmissions. The reason you use a continuously variable transmission (CVT) is it best matches the rotor speed to the generator speed for all wind conditions so the loss in efficiency in transmission is often made up by the overall machine efficiency in converting wind to electrical power - bear in mind most wind turbines as total machines are only around 30% efficient - if you use a CVT that has a higher efficiency than a cone type friction transmission the efficiency can go even higher such that the total machine efficiency is raised above the total machine efficiency of just using a gear set - this is why automobile manufacturers are crazy for this tech
Isn't this similar to how locomotive reversers work?
OMG. ! Is the paper battery abandoned?
no
with great dificulty
you tube error - apparently fixed now
@@ThinkingandTinkering Thank you, dear friend!
If electro magnets were used on the wind turbine generator could not a variable matched drive be achieved by altering the magnetic field of the coils with electronics, monitoring speed and electrical power, similar idea to MPPT.
yes i mentioned that in my previous video
Ah, now I can hear it.
cool
Who is the poor guy assigned to sit by the gear shift 24 hours a day to shift it, since the wind is variable too? The nice thing about the pulley/belt version is that it has spring loaded pulleys that self adjust due to the torque. I think.
think it through mate - no one is going to sit there - so how would you do it? I know how i would
@@ThinkingandTinkering Don't know, if it's manually shifted somebody got to shift it, and the wind keeps changing
.
Looks very complicated, why not use just a cone and a belt Robert?
well they are susceptible to slip mate - it's not that complicated rotary to linear then variable on the linear then linear to rotary
Why not use a simple crank shaft?
you could do if you wanted but it is not simple
How do you keep the transmission from a, robbing to much power form the wind fan and b, how do you adjust the gear based on the winds input?
RUclips knows our educator is too powerful.
And tried to silence him.
Just look at the other comments and you'll understand.
got it mate - cheers
Could you look at toroidal gearboxes. I used to work for Torotrak as a designer and their gearbox with the compression plasticising Shell oil was something really interesting and would make a great tinker cad model!
i mentioned them earlier mate - may well make one
No sound?
you tube error - apparently fixed now
No sound? 🤔
you tube error - apparently fixed now
Well that looks great, but no idea how it would work with a wind turbine
oh yes it will work
keep burbaling on
lol - cheers mate
it seems like a good idea untill you have to use them
indeed
No sound
you tube error - apparently fixed now
Is that a conical drive at your right elbow? Did I miss an episode? I've had this design in my head for years and always wondered if I was breaking some rule of physics and was wondering why someone hasn't invented it yet... and there it is... as long as it's what I think it is.
yes it is mate and it is in the previous video
Headed there, now. This design has literally kept me up at night - can't wait to see it in action.
That thing is too complicated. Have you ever heard of Rube Goldberg machine?
yes - we call it heath robinson - but if you think this is over complicated you haven't seen many CVTs lol - I joke - of course - you should also remember this was made this way as a teaching aid for how ratchet CVTs work - a final model would be more compact and less obvious - but harder to teach from
You could't make a soap dish
So many failure points. This is unreliable. Thus this epic fails.
I appreciate the versatility of 3d printing, but not being able to afford computers, let alone a 3d printer. Your videos for a while have been of little utility for me.
really? I find that odd as the videos have nothing to do with 3d printing - sure I use a 3d printer but it is just a tool to get something done - this video is about ratchet variable transmissions - i use the 3d printer to explain the logic and construction of them - you can make them anyway you want if you use the logic - i am sorry you don't find that useful
I do find it in part useful, but every video has the associated tinker cad file. Which I have no way of accessing it, so it seems like getting half the info. I find it easier to get a deeper understanding of principles when I can actually spend time looking at the renders and specifications.It's not your responsibility. Just wanted you to know how it came across to me and possibly others
Silence......
you tube error - apparently fixed now
Sorry Murray, you have gone so far into 3D printed stuff that I have lost interest, I like simple easily constructed science, Peter.
you seriously disappoint me mate - it doesn't matter if it is metal, wood or plastic the logic is the same - i even made this from wood once!!!
3d printers are the new right hand for makers. It's the simplest do everything tool.
Hi Rob, how about staying to that CVT with the ball and make tooth on the cones and the ball 🤔?
Thanks for sharing, Robert.
PLA or PLA+ for your prints? -EZ
Both mate i tend to use PLA+ on the neptune 4s and PLA on the Neptune 3s