First it looks like these could pay for themselves pretty darn quick Second I'd use air bearing in place of PM. I thought of the same idea of placing these on the roof too, so how about replacing wind-driven turbine exhaust ventilator, Along with the wind the attic heat would add additional force.
@@BOBPortlandOr Question... How will you provide air as a bearing, for less energy than the turbine provides? The magnets can be yanked from an old failed microwave oven for totally free, and cost absolutely nothing to operate. While I may have played 'devil's advocate' about magnetic drag, I do know that it indeed, is, at this point in time, the least power robbing form of bearing known. Since each of these turbines are only going to produce a pittance, unless you plan on making one as big as a house its self, you will still be more power ahead to use magnets than to use air, and this only because air GAINS efficiency with surface area. That reminds me of one of my plans for using water as a bearing. It only makes sense in certain scales of power production, due to inherent inefficiencies, while, at the same scale as I WOULD use water as a bearing, magnets would cost the price of a small city. One needs to engineer a system to work to scale, and at the scale Rob is showing us, magnets are just impossible to beat.
If you’re worried about it flying apart in a strong breeze , put a second serpentine generator with another maglev/bearing setup on top . That way you could double up the generation
The art is to capture low winds here, so, having more coils/magnets will increase resistance. But if you have a way to electronically controll when you draw current, or not, by closing/opening circuits and drawing power you can increase resitance and performance as the wind speed increases, like a energy recovery brake on a car works. This circuitry will broaden you range of operable windspeeds.
or put a circlip at the top of the shaft. There is enough space to prevent it touching the cage and causing friction, but will allow the cage to rise a couple of mm in higher winds
If Elegoo hadn't sent Rob a printer the TnT world may have taken a very different tack! Thanks Elegoo, and thanks Rob for embracing new tools as well as you embrace new ideas. 😉👍
And I wouldn't have bought my Elegoo (managed to get my hands on a Neptune 3 Plus last month!) which I've absolutely loved learning how to use. I've already designed some bespoke mitre saw stops in Sketchup and 3D printed them for my workshop (available free on Printables - user keebs). Now I've started learning FreeCAD this week, so I could design and 3D print some desk cable grommets for some new bedroom furniture for our children ... printed them this morning! And much, much more! Thanks Rob!!!
@@ThinkingandTinkering the difference is that now instead of spending a day constructing the parts for the machine, you get a much better balanced set of parts, from the 3d printer with less hands on time, giving you more time to make and edit the videos, which also means more iterations of a project as you develop the ideas
a proper Fred Dibnah style presentation .. no frills, just good honest advice .The fan on my air home air conditioner looks like an elongated version of your fan .
After watching you talk about making the wind generator I had an idea Robert. When you wind the wire around dowels they put a kink in the wire. Way better to use a circle of sorts which will prevent you for putting any kinks in the wire bundle. This was taught to me when I first started rewinding and rebuilding electric motors. That was way long ago I would rather not even say the time span.Keep on making great informative videos for us all to learn from fella. Peace
@@MrHouseparty6 That is what I was shown, taught and told by a master motor rewinder and balancer. His work never came back and knowledge of electricity was second to none. PERIOD !!!
@@victoryfirst2878 right right. A five-minute conversation with a wise man is worth ten years of study. Proper techniques and the knowledge of the reason why, to pass on. Well met Sir!
@@MrHouseparty6 I consider myself super lucky that I worked with this man a few years. His logic and knowledge was second to NONE. PERIOD !!!!!!!! May he rest in peace.....
@@ThinkingandTinkering Anytime! I love seeing your progress. Keep up the awesome work! I was brain storming about ways to increase efficency on your turbines. You cant really make the viens on the feather turbine taller since they overlap with each other but you could make them wider, thereby increasing the overall radius/surface area of the turbine. You could also taper the veins so they are thinner in the center of the turbine and much thicker at the outter edge to reduce overlapping (and friction) and further increase surface area of each vien. If all the veins lay completely flush then there is no way for the air to get in to pop them up so maybe only have the outter edge overlap. If they did lay flat, perhaps a little air scoop somewhere along the vein would help get the air into the system to get it started. Naturally, all this would increase the weight. It would require some testing to find that sweet spot between weight and efficency. As for the tall turbine, i was thinking you could add a shroud that is a cylinder cut in half vertically, so only half of the turbine is exposed to the wind at a time. The shroud would rotate around the whole drum and could use a wind vane on the top to orient it in the direction of the wind. This way the half of the turbine that is going against the wind would be shielded to hopefully reduce any losses induced by fighting against the wind.
Brilliant, Just started watching a few videos ago but your prototypes are more impressive with each episode. Please keep enjoying your thinking and tinkering!
I only just found your channel online yesterday and I have to say, it's very cool to watch someone testing and sharing all of these ideas. Some of the same ideas and questions have been bouncing around in my head for years! It really is satisfying to watch you work out the theoretical parts and explain the basic math and science behind it all. I also appreciate that you name drop other people and their projects all the time too. All of the prototyping that you do is fun to watch as well AND you just hand out all of your work to everyone. Free to use and improve. That is VERY generous of you! Thank you for all your time and effort! Your selflessness and humility are greatly appreciated! I will be watching more for sure.
it may only produce a small amount in a light breeze but that wall could hold a half dozen or so all hooked to a charge controller to trickle charge a battery or maintain a battery in a back up system
Realy cool. I would be very interested in seeing what a bigger version of this could generate. Like, i get that this is simply a proof of concept. But getting a substancial wattage out of something is more satisfying than simply lighting an LED. Love the content. Keep it comming.
@@ThinkingandTinkering one day, maby. Currently i neither have the time, or the tools or the space to fabricate anything more advanced than wargaming minis.
Great!!! This two-piece design split into three parts (coil - magnets - blades) would make the top easily interchangeable and provide an excellent platform for comparing the efficiency of the different types of turbines seen so far! I would be very keen to see such comparisons 🙂
Hi Robert, I have watched many of your videos. I enjoyed your video on making an arcamedies screw with CDs and thought you'd be the man who could test this idea easily. I believe it would be possible to create a screw pump powered by a water wheel. If you had two water wheels under the falling water, one to power the screw pump and another to generate power, you would have a self sustaining system. The main considerations would be to have the tube of the screw stationary to bear the weight of the water, leaving the screw responsible for the lifting of the water. You would also require a top reservoir to feed the water wheels. I wasn't sure how else to contact you, so I hope this comment interests you. Thank you, and keep up the inspiring work.
I don't know if that would work mate - I actually believe it wouldn't - but that's just me so it is unlikely I will do it - if you think it might work it is probably better you give it a go if you want it done anytime soon mate
Hey Digital Bishop - Check out US patent US9759180B2 which is similar to what you are talking about. It might spark some ideas if you ever consider trying it.
@@ThinkingandTinkering Thank you for taking the time to reply. I haven't built it yet because I'm not sure it'll work either. I'm still researching what I need to know to build it. Thanks Again.
Hello Robert, Thank you for all of your great videos. I have loved watching your content for years. However, in your last couple of videos, you have only shown voltage readings and never the amperage reading. Would it be possible for you to provide an update to this video and tell us how many amperes you have read? Best regards, Chris
If I'm not mistaken, the device he connects all these devices to to measure voltage has a set load so all are compared equally. Perhaps go back to that video where he presents it for the e act numbers.
that's because I realised measuring amps all the time was a waste of time and pretty dull lol - we are working with the same coil and magnet arrangement at the moment mate - I did measure amps and volts once or twice but after that - what is the point? Volts will give a direct measure and amps is just a matter of force in less losses in the generation system - as losses in the generation system are the same why bother? we know force in as it is governed by wind speed - so to asses this system we only really need wind speed and volts - the I have finished making assessments and build the final version then it would be time to measure amps again - and it is likely I will do exactly that. Anyway for your peace of mind it was about 35ma
🤔 Also a nut on the end of the fixed shaft will lower the distance gap/clearance between the turbine and the coil, it will increese the output voltage. 👍🏻
Literally just managed to find 4 of these cages in the week along with a pneumatic ram so i happy to see this being used, love the maglav design, I have plans to build lots of these to the base of my bed, be able to gather electricity from the up and down movements that beds are subject to 😂
This is absolutely brilliant, its perfect for low breezes, even caused from vehicles driving by.. . I wonder if it could be made out of PETG ? Here where i live it gets in the 33C every summer for weeks on end sometimes, and I would like to make it out of durable plastic that can take the abuse. Thank you Robert for all your time spent .
5:05 As much use as a chocolate teapot! What an enjoyable saying! I'm definitely adopting it over here. Thank you for everything by the way. You're quite inspiring.
I could see these being mass produced and used as remote gadget charging stations like on hiking paths, bike trails, maybe for camping. you could add another coil and magnet assembly to the top of the wind catcher. magnets on the wind catcher and coil built into a table like structure that sits over the device. legs of table could be angled to direct wind in derection of turn wanted.
You could make a second piece like the bottom plate, add a second bearing and axle base for the top of the squirrel cage fan, add a second row of magnets and a coil for the top. Add a second mag lev ring to the top and you won’t need to worry about high wind storms. It will also double power output without significantly increasing drag from weight. You can also increase length of blades by increasing the rigid structure at the top and securing it at both ends
Hello Robert! My name is Wayne Matthew Clarke. I love your videos! I'm not that bright when it comes to engineering.. My life was in medical rescue.. Please, the next time you have a giveaway Please consider me! I am completely convinced that free energy is the way to go! Hats off to your knowledge base! Love to talk to you some day!
@@justtinkering6713 Doesn't last as long, and is more permeable by water and acids. Can lead to the corruption of the insulation and the corrosion and shorting out of the coils, eventually leading to unit failure. Realistically, even for only limited weather exposure, it should be UV resistant marine grade epoxy. On top of that, a disc of Mylar [a cheap 99 cent emergency survival blanket works] should be applied to the surface of the epoxy before it cures, to reduce moisture contact and ensure a longer UV resistance. Just before one mixes and pours, cut the outer circle big enough to reach the edges of the area where the resin will go, and put a hole in the middle for the spindle, pour the resin, lower the Mylar, and with a small brush or cotton swab, sweep away any incidental bubbles for a good contact bond. Just put the aluminized side toward the resin to keep IT from corroding. The Mylar will [effectively] last for longer than we will live, and the aluminum will make sure that the resin does the same. NEVER use ANYTHING porous, OR organically active, or it WILL ruin your coils. They will 1, let in water, and 2, either allow in acids, or 2, allow in acid creating microbes. Either of those will destroy the very fine insulation on the wire and short it out.
@@hunnybunnysheavymetalmusic6542 even though its called wood putty its not wood, its plastic and plaster of paris. But then again, its just an experiment isn't it.
These sorts of things would be ideal for putting in place of roof vents, and for piping your clothes drier vent directly into the center of. Maybe even having a few in the bed of your truck for portable charging? I wonder how these would work in series inside of a larger pvc pipe, to be used with the Darwin wind turbine? Very nice sir Rob. Thank you.
There is a lot that could be done to improve it that is for sure. Adding a second generator arrangement at the top, adding stationary veins around the outside to compress more airflow as well as suction on the opposite side as well.
This idea but using the magnets to heat a copper bottomed sand battery of which you can heat your water. And also run a small thermal engine off as well
Also how hot could you get the sand battery off that sort of a system over a day, 2 days 3 days etc? How many days would be required to get enough heat into that system to keep your house warm during winter?
I wonder how much weight those magnets could handle since it just needs to not touch while spinning, so putting more wind catching action on top and maybe even some more coils held in place around it, might make a nice section of a wall, and just make a whole wall of them XD (funny thing is you can find those magnets in subwoofers all the time because people buy cheap subwoofers with the amp inside the woofer, and when that electrnic bit goes, the speaker is useless with out a powered subwoofer level output which most stereos don't have, that I have seen at least LOL (working on rigging one up that is not music oriented but to use the speaker to make a washing machine using the subwoofer to shake a container with water and soap in it for agitation and see how well it works for a mini cloths washer or automated dishwashing unit that will still have to have everything swapped into plain water and shook to get rid of soapy material :) )
Hello Robert, thanks for your videos. I think some kind of a sail could be used to get more power from the wind. It would be not rotation motion but some swing motion like trees do. Or maybe we could even use the trees, because they are heavy and they are swinging on the wind. The thing is how to get the power. 🙄
The addition of your feather turbine onto the top of this would be interesting... downward forces pushing the coil closer together. Self adjusting pitch helps with initial momentum and continuing at high velocity.
This has evolved into the best generator that I have seen, brilliant Rob thanks. Inspired by a previous commenter, would your conductive ink, drawing a line or multiple lines onto a roll of tape, make a very energy dense coil???
You are persistent as hell at being informative haha. I know I have seenheard you say it is not the read outs that are as important as experiencing the flow of creativity. Maybe in some other words, hahah. Anyway, You and your channel rock and, are one of the few things I still enjoy looking at on a screen of any sort. Refreshingly true speaker. Thanks again my brother. I know it would be fun to spin something with you until centrifugal force blew it to bits hahah.
Might be handy to build a cover for it , so as to save the unit from things. Blowing in the wind …. Branches …. Birds …. Squirrels…. Etc .. have a. Fun day. !
Watching this got me thinking of Zoetropes those cylindrical animation devices and how cool it would be to integrate the two and make billboards that generate electricity.
Install the squirrel cage in a rotating housing to concentrate the wind energy and reduce the losses due to the drag on the back side of the squirrel cage. Just for fun, drive the generator section using a variable-speed motor at different RPMs and record the output under load to measure the generator output (volts & amps).
might need a bit of a tweek to get the magnets a bit closer tot the coil.... perhaps a 2nd (light) maglev on top to basically push the cage down? make it adjustable a bit so it can be tuned ....
kind of reminds me of the difference between waterpumps that have a fluid bearing and a mechanical bearing - one is more efficient but the other will keep spinning even if something goes wrong with the fluid.
That is AWESOME. I'd like to see a comparison. a control. let's say, can you light a candle next to it to demonsteate visually how windy it is. Thank you so much. Just awesome,
I love the maglev incorporation. I wonder if the ring magnets field have a negative or positive impact on energy harvesting over time. Perhaps no effect at all. But maglev is supposed to be minimized friction so friction efficiency has been reached. Loved the video!
@@darkfieldcarnivore3928 Ya, I got that. Still the maglev with ceramic bearing as a stabilizer is still more efficient then only ceramic. I was under the impression that the friction was less on the ceramic bearing as the weight of the apparatus is suspended by the mag field. What am I missing here?
@@Moist_yet_Crispy Friction is proportional to the force pressing two surfaces together. In the case of two reasonably well aligned magnets, that force is very small, theoretically 0 at the equilibrium point, even though it's an unstable equilibrium. Not much at all. As for the maglev interacting with the generator, it doesn't. The levitating magnets are spinning about their poles, so there's no change in magnetic flux coming from them. Plus the coil is on an equipotential ring so it's not going to get anything from the levitation magnets. If they were misaligned or eccentric, then the coil probably would feel something, but it would be a lower-frequency modulated DC offset.
G'day RMS, love your attitude and thoroughly enjoy your videos. I'm curious if a 3rd ring mag secured to the shaft on the inside of and opposing the turbine mag would create a magnetic sandwich effect to keep the turbine in place yet maintain minimal friction - in other words, a North-North-South-South ring mag arrangement ??
This is awesome. Wonder how nice this will work with vertical blades changing the wind direction 🤔. Could even make the blades adjustable for large applications so when the wind is tomuch, you can basically shut it down by deflecting the wind.
@@ThinkingandTinkering Thanks, I would love to that, but I stay in a flat and are not aloud to do any work outside unless its maintenance. But have seen it in action on various CZcams channels(not easy to find) and seems to work well. Was actually giving a polite suggestion for you to share with your viewers.
Ive made something that can can turn 2 way movement into just 1way forwards thrust using gears, i was gonna make a scooter with it on but never got round , basically can take a pendulum movement back and forthe and turn it into just a forward movement but probably work with your thing aswell, the wind should act on a pendulum with abit of weight be better than a standing stick which could fall over
Hi Robert, great videos however can you please make a turbine that we can put to use such as to charge a 12 volt 100amp liesure battery, please please can you do this
@@ThinkingandTinkeringRobert, that's not really a nice answer is it? Not everyone has followed all your videos and it's impossible to search for that info🤷♂️
How did you (or did you) manage the gap between the magnets and the coils? Heuristic? ie by tinkering? Seems like you'd want as small a space as possible without the turbine bottoming out when it starts to vibrate
This is such a simple build with the use of the 3D printer I love it. Can you show us a way of building something like this without the use of the 3D printer? Unfortunately I can't afford to buy one of those lovely tools.
I have already done that mate - loads of times actually - it's basically a squirrel cage fan - you need to get one of those - you find them in tower fans
I assume those new printers are printing 24/7? 😂 Just remember, the longer they print for the faster parts wear out, just a tip from a fellow printer. I'm loving this wind generator series too btw. You are really a great inventor mate, never change 👍
I'm wondering how much impact the large magnetic fields from those ring magnets is having interacting / interfering with the magnetic field from the tiny neodymium magnets at the rim - which are ultimately the ones interacting with the coil to produce the current. Maybe do a comparison of the output from this maglev version with a version using a standard non-magnetic (but more friction) thrust bearing?
Interesting design, i suggest to add a flywheel with the correct weight inside the fan around the bearings housing (set between fans and bearings housing ) in addition to that the flywheel weight will narrow the distance between magnets and the coil as increase the speed (maybe) .
@@ThinkingandTinkering Thank you , In our country sir we do not have electricity so what about a 3d printer or neodymium magnets , if we need to charge our phones we have to walk 3 km to a store . hopefully if i get out to better place i will try , all the best .
How many amps does it put out at that 4.x volt on the fan? I think if you had the actual volts amps and Watts on screen that would really help a lot of viewers like me understand what sort of power were really working with
You should put a wind concentrator on its base. It is so that lower wind on an large area is funneled through a smaller area creating a higher speed. It doubles the energy generated and also protects against storms because ironically it limits the rpm at higher winds! There are a couple of scientific papers on this!
Thank you for sharing this knowledge. We tried to do this design as a science project (adding a Darrieus top as well). We are running into an issue, only producing mV of power, and only at low RPM. What is the impedance of the coil expected? (We used 32 and 38 awg copper wire, 400 turns and are seeing the same result with either coil)
I see it was wobbling a bit so guess a top plate and longer shaft would sort that, so it does not wear on the bearings by being twisted around and keep them all working as they are made to work for years and years of trouble free electricity generation XD
Can someone tell me how Robert is hooking up the led and later on the volt meter? I see the alligator clips clipped to a copper wire but where is the other end of that wire? Is it looped around the serpentine coil?
Thank you both for your responses, I understand this part but the other end of that copper wire...is that looped around the serpentine coil? Edit: Just went back to 1859 and noticed that Robert does have the start and end of the wire dangling off the coil. Hard to see that .1 mm copper wire. Thanks for pointing me in the right direction!
it's pretty straight forward mate - each end of the coil is clipped to the meter or the led - that is the positive of the meter or led to one end of the coil and the negative to the other end of the coil - nothing else to it
Thank you everyone! I make and tinker but my knowledge of energy/electricity is still rudimentary. I am actually making this thing to experiment with and learn...so I appreciate your help.
More magnets inside the diameter ring inside ring and more serpent coils under them each reduction would get less energy but finding the sweet spot could be worth it especially if you take the project larger and can have three or more rings top and bottom.
you are still not thinking it through - thinking it through is about solutions too - look at the other posts there are some good suggestions - think it through! - I am not trying to be mean to you mate I am trying to get you to make suggestions on possible solutions you might have - add to the community a bit more than you are doing by just pointing out a potential problem lol
@@ThinkingandTinkering Try it, it works great. Just like the genius behind Peter Sharps cycloturbine. You have to think beyond his videos because he didn't have the facilities to make a serious turbine. Most of his tests were using string and paper wind turbines. People pointing out the weaknesses in a design sometimes take the blinders off the the inventor, sometimes inventors get tunnel vision and keep pursuing their dream and can't or won't see anything else, a lot of times because they have so much invested in their own idea. Maglev is great but its not perfect and having the magnet rotor crash into the stator is not good. I guess mechanical limits on a maglev system would be part of the solution. Instead of crashing into the working parts it could bump into a mechanical limit bearing.
Does the magnetic field from the maglev magnets affect the output of the coil? If you shielded the maglev component from the coil would the power from the coil increase, decrease, or have no change whatsoever?
Hi Robert, I like your ingenuity, and the Maglev thrust bearing. But as the air gap between magnets and coils (in the generator) is where most of the potential "power genreation" is "lost", I feel a "real" turbine needs a fixed location (mechanical thrust bearing) to enable just a couple of thou clearance between the magnetcs and generator poles. On my test generator set-up, using a simple Sturmey Archer bicycle wheel generator, the poles (without the high strength magnets you have) provide so much drag that the rotor you have would not overcome the generator knotching of the magnets. I.E. the generator start-up torque is too high for a garden wind turbine at start-up... Perhaps you can apply your ingenuity to something that overcomes such high resistance (Torque in the generator) as close magnets will develop at start-up, so the turbine can start turning in low velocity wind, then "close the gap" - or whatever - as the rotor starts to take adequate power to generate good proportion of the power from the wind? I havew considered the car alernator arrangement whereby the electromagnetic rotor is not excited much for start-up, then the excitation current is increased as the generator power from the wind increases. But this will need a bit of electronics measuring the Turbine speed, and complimentary electronics to apply excitation current to govern the power developed to that of the optimum speed of rotor, as the wind varies. But I have clicked "like" as always. Steamchick
This is really beyond description. Words cannot convey how much the series about the wind generation inspired me. Just one question though, is how "long" is the serpentine coil or at least how can I measure the length to get the best fit for any size of circle? 👍🏻👍🏻👌🏻🏆
Think about it, you have the parts going radially in and out, and then the bends. The bends are a semicircle, so pi radians or 180 degrees, times the radius of the bend. Well, we have the diameter of the bend from the spacing of the slats so divide by 2. That's length of a slat * number of slats * pi/2 * spacing between slats (start to start or midpoint to midpoint). Of course the outer radius is larger so you might want to take an average of inner and outer, and add a little extra for wiggle room.
He has a video on how to make the coil. He suggests you wrap the empty slots with a string first to get your length. Then just multiply that until it’s your desired thickness.
Just making a comparison with 1869. Why is voltage down so much? Is that just the difference if having the coil rotated 90 degrees or are the ring magnets affecting generation? The obvious differential is how fast it’s rotating (pull cord/ squirrel cage). Design aids itself very nicely to making a wall with multiple generators.
What if you use axial magnets instead of bearings? Offset them a little bit so the bigger ones is the lowest and the highest ones and then you can tighten the upper most downwards to stiffen the bearing effect and prevent the turbine from lifting.
@Robert Murray-Smith is the coil count the same as the magnet count? ie the amount of tabs on the serpentine base. I have a few mini-kegs of beer I have emptied so going to use them in a Savonius wind turbine configuration for fun, do you happen to know the best configuration for two halves of a barrel? would it be outside edges touching (ie double the diameter) or overlapping 50%/75%?
Tom Stanton just released a video where he made a magnetic clutch drive for his bike. It works but not very well 😂most of the energy he put in was lost to heat waste. Still cool concepts though
this idea has obsessed me for years - imagine this in the place of chimney pots in cities which no longer allows fires.
First it looks like these could pay for themselves pretty darn quick
Second I'd use air bearing in place of PM.
I thought of the same idea of placing these on the roof too, so how about replacing wind-driven turbine exhaust ventilator, Along with the wind the attic heat would add additional force.
@@BOBPortlandOr excellent idea - and having multiple things working side by side contributing seems sensible
@@dadigitechman A chimney pot or a weather vane or ridge tile design, would not look like a generator and so should escape that prohibition.
@@dadigitechman Only if they CATCH ya!
@@BOBPortlandOr Question... How will you provide air as a bearing, for less energy than the turbine provides?
The magnets can be yanked from an old failed microwave oven for totally free, and cost absolutely nothing to operate.
While I may have played 'devil's advocate' about magnetic drag, I do know that it indeed, is, at this point in time, the least power robbing form of bearing known.
Since each of these turbines are only going to produce a pittance, unless you plan on making one as big as a house its self, you will still be more power ahead to use magnets than to use air, and this only because air GAINS efficiency with surface area.
That reminds me of one of my plans for using water as a bearing.
It only makes sense in certain scales of power production, due to inherent inefficiencies, while, at the same scale as I WOULD use water as a bearing, magnets would cost the price of a small city.
One needs to engineer a system to work to scale, and at the scale Rob is showing us, magnets are just impossible to beat.
If you’re worried about it flying apart in a strong breeze , put a second serpentine generator with another maglev/bearing setup on top . That way you could double up the generation
You can use the inner diameter space as well
The art is to capture low winds here, so, having more coils/magnets will increase resistance. But if you have a way to electronically controll when you draw current, or not, by closing/opening circuits and drawing power you can increase resitance and performance as the wind speed increases, like a energy recovery brake on a car works. This circuitry will broaden you range of operable windspeeds.
or put a circlip at the top of the shaft. There is enough space to prevent it touching the cage and causing friction, but will allow the cage to rise a couple of mm in higher winds
nice one mate
short the coil ? magnetic brake
If Elegoo hadn't sent Rob a printer the TnT world may have taken a very different tack! Thanks Elegoo, and thanks Rob for embracing new tools as well as you embrace new ideas. 😉👍
And I wouldn't have bought my Elegoo (managed to get my hands on a Neptune 3 Plus last month!) which I've absolutely loved learning how to use. I've already designed some bespoke mitre saw stops in Sketchup and 3D printed them for my workshop (available free on Printables - user keebs). Now I've started learning FreeCAD this week, so I could design and 3D print some desk cable grommets for some new bedroom furniture for our children ... printed them this morning! And much, much more! Thanks Rob!!!
lol - not really mate - I am still doing the same old stuff - I just use a 3d printer as a tool to help me
@@ThinkingandTinkering the difference is that now instead of spending a day constructing the parts for the machine, you get a much better balanced set of parts, from the 3d printer with less hands on time, giving you more time to make and edit the videos, which also means more iterations of a project as you develop the ideas
a proper Fred Dibnah style presentation .. no frills, just good honest advice .The fan on my air home air conditioner looks like an elongated version of your fan .
After watching you talk about making the wind generator I had an idea Robert. When you wind the wire around dowels they put a kink in the wire. Way better to use a circle of sorts which will prevent you for putting any kinks in the wire bundle. This was taught to me when I first started rewinding and rebuilding electric motors. That was way long ago I would rather not even say the time span.Keep on making great informative videos for us all to learn from fella. Peace
The mechanics of a thing.
@@MrHouseparty6 That is what I was shown, taught and told by a master motor rewinder and balancer. His work never came back and knowledge of electricity was second to none. PERIOD !!!
@@victoryfirst2878 right right. A five-minute conversation with a wise man is worth ten years of study. Proper techniques and the knowledge of the reason why, to pass on. Well met Sir!
@@MrHouseparty6 I consider myself super lucky that I worked with this man a few years. His logic and knowledge was second to NONE. PERIOD !!!!!!!! May he rest in peace.....
thank you mate - that is a really good suggestion - I will adopt it - cheers
Im curious to see your maglev combined with your feather turbine. The extra light weight of the feather turbine might help with efficiency.
He could turn that upright windcatcher he was using into a feather type wind catcher as well
interesting suggestion mate - cheers
yes sir
keep developing that thin wind turbine please ..
@@ThinkingandTinkering Anytime! I love seeing your progress. Keep up the awesome work!
I was brain storming about ways to increase efficency on your turbines. You cant really make the viens on the feather turbine taller since they overlap with each other but you could make them wider, thereby increasing the overall radius/surface area of the turbine. You could also taper the veins so they are thinner in the center of the turbine and much thicker at the outter edge to reduce overlapping (and friction) and further increase surface area of each vien. If all the veins lay completely flush then there is no way for the air to get in to pop them up so maybe only have the outter edge overlap. If they did lay flat, perhaps a little air scoop somewhere along the vein would help get the air into the system to get it started. Naturally, all this would increase the weight. It would require some testing to find that sweet spot between weight and efficency.
As for the tall turbine, i was thinking you could add a shroud that is a cylinder cut in half vertically, so only half of the turbine is exposed to the wind at a time. The shroud would rotate around the whole drum and could use a wind vane on the top to orient it in the direction of the wind. This way the half of the turbine that is going against the wind would be shielded to hopefully reduce any losses induced by fighting against the wind.
The best design for vertical turbine.
Brilliant, Just started watching a few videos ago but your prototypes are more impressive with each episode. Please keep enjoying your thinking and tinkering!
they cane a bit ropey as I work out ideas mate lol - cheers
I only just found your channel online yesterday and I have to say, it's very cool to watch someone testing and sharing all of these ideas. Some of the same ideas and questions have been bouncing around in my head for years! It really is satisfying to watch you work out the theoretical parts and explain the basic math and science behind it all. I also appreciate that you name drop other people and their projects all the time too. All of the prototyping that you do is fun to watch as well AND you just hand out all of your work to everyone. Free to use and improve. That is VERY generous of you! Thank you for all your time and effort! Your selflessness and humility are greatly appreciated!
I will be watching more for sure.
Going to use this as the model for my first wind generator. Thanks!
You are the best instructor ive ever met :-D Please keep up the good work 😀
cheers mate
@@ThinkingandTinkering Cheers. The way you enjoy everything you do just motivates me to no end brother 😀
So glad I've found this channel. Love your attitude rob
I am loving this system. looking forward to set up such generators along my driveway. Have a wonderful day!
nice
it may only produce a small amount in a light breeze but that wall could hold a half dozen or so all hooked to a charge controller to trickle charge a battery or maintain a battery in a back up system
nice
Thanks Rob! I enjoy your videos & following your tinkering journey!!
& I love it when a plan comes together 😎
lol - me too mate and one more step with this one
Realy cool. I would be very interested in seeing what a bigger version of this could generate.
Like, i get that this is simply a proof of concept. But getting a substancial wattage out of something is more satisfying than simply lighting an LED.
Love the content. Keep it comming.
build one and share your results
@@ThinkingandTinkering one day, maby. Currently i neither have the time, or the tools or the space to fabricate anything more advanced than wargaming minis.
@@ThinkingandTinkering what size are the neodymium magnets? I'm making one now, and it appears the magnets are 10x3mm is that correct?
Brilliant! This concept would be appropriate for my region of the world. You have too much fun. =)
Simply brilliant! I may have to buy a 3D printer now so I can fill my yard with these.
junk yards have these ready made squirrel cage blowers from car heaters. (with dc motor already attached)
lol - awesome plan mate - but hold up for the next vid
Great!!!
This two-piece design split into three parts (coil - magnets - blades) would make the top easily interchangeable and provide an excellent platform for comparing the efficiency of the different types of turbines seen so far! I would be very keen to see such comparisons 🙂
that is a great idea - thank you - I have already said that in previous videos though
Hi Robert, I have watched many of your videos. I enjoyed your video on making an arcamedies screw with CDs and thought you'd be the man who could test this idea easily. I believe it would be possible to create a screw pump powered by a water wheel. If you had two water wheels under the falling water, one to power the screw pump and another to generate power, you would have a self sustaining system. The main considerations would be to have the tube of the screw stationary to bear the weight of the water, leaving the screw responsible for the lifting of the water. You would also require a top reservoir to feed the water wheels. I wasn't sure how else to contact you, so I hope this comment interests you. Thank you, and keep up the inspiring work.
I don't know if that would work mate - I actually believe it wouldn't - but that's just me so it is unlikely I will do it - if you think it might work it is probably better you give it a go if you want it done anytime soon mate
Hey Digital Bishop - Check out US patent US9759180B2 which is similar to what you are talking about. It might spark some ideas if you ever consider trying it.
@@ThinkingandTinkering Thank you for taking the time to reply. I haven't built it yet because I'm not sure it'll work either. I'm still researching what I need to know to build it. Thanks Again.
Hello Robert,
Thank you for all of your great videos. I have loved watching your content for years.
However, in your last couple of videos, you have only shown voltage readings and never the amperage reading.
Would it be possible for you to provide an update to this video and tell us how many amperes you have read?
Best regards,
Chris
Yes please!!! I was just about to write the same thing.
If I'm not mistaken, the device he connects all these devices to to measure voltage has a set load so all are compared equally. Perhaps go back to that video where he presents it for the e act numbers.
that's because I realised measuring amps all the time was a waste of time and pretty dull lol - we are working with the same coil and magnet arrangement at the moment mate - I did measure amps and volts once or twice but after that - what is the point? Volts will give a direct measure and amps is just a matter of force in less losses in the generation system - as losses in the generation system are the same why bother? we know force in as it is governed by wind speed - so to asses this system we only really need wind speed and volts - the I have finished making assessments and build the final version then it would be time to measure amps again - and it is likely I will do exactly that. Anyway for your peace of mind it was about 35ma
@@ThinkingandTinkering Thank you, Robert, for your quick response. Your CZcams channel is great - it's a pleasure to watch. 👍
🤔 Also a nut on the end of the fixed shaft will lower the distance gap/clearance between the turbine and the coil, it will increese the output voltage. 👍🏻
you would need a bearing under that nut!
Wouldn't that attract more squirrels? 😊
Great idea to stop the turbine section launching off into the distance. 👍
@@YoureNowOnTV Nobady said to be tigthened till the end .
@@YoureNowOnTV LMAO... isn't that the point of the squirrel cage design
this would add friction .. better to just create the print with the mag-bearings farther apart or coils and gen-magnets closer ...
Literally just managed to find 4 of these cages in the week along with a pneumatic ram so i happy to see this being used, love the maglav design, I have plans to build lots of these to the base of my bed, be able to gather electricity from the up and down movements that beds are subject to 😂
nice! lol - a good for all that energy mate lol
Dont forget the back and forth movements of the headboard 😂
This is an excellent design, thanks for sharing!
This is absolutely brilliant, its perfect for low breezes, even caused from vehicles driving by.. . I wonder if it could be made out of PETG ? Here where i live it gets in the 33C every summer for weeks on end sometimes, and I would like to make it out of durable plastic that can take the abuse. Thank you Robert for all your time spent .
5:05 As much use as a chocolate teapot! What an enjoyable saying! I'm definitely adopting it over here. Thank you for everything by the way. You're quite inspiring.
thank you mate and cheers
I could see these being mass produced and used as remote gadget charging stations like on hiking paths, bike trails, maybe for camping. you could add another coil and magnet assembly to the top of the wind catcher. magnets on the wind catcher and coil built into a table like structure that sits over the device. legs of table could be angled to direct wind in derection of turn wanted.
yeah I could see that
Definitely the future mate. Awesome!
cheers mate
You could make a second piece like the bottom plate, add a second bearing and axle base for the top of the squirrel cage fan, add a second row of magnets and a coil for the top. Add a second mag lev ring to the top and you won’t need to worry about high wind storms. It will also double power output without significantly increasing drag from weight. You can also increase length of blades by increasing the rigid structure at the top and securing it at both ends
Another great video. Thanks!! You have a brilliant mind!!!
wow - cheers mate
Hello Robert! My name is Wayne Matthew Clarke. I love your videos! I'm not that bright when it comes to engineering.. My life was in medical rescue.. Please, the next time you have a giveaway Please consider me! I am completely convinced that free energy is the way to go! Hats off to your knowledge base! Love to talk to you some day!
I can't just give you stuff mate lots of folks are in your situation - it would be so unfair to them
I agree with putting the potting resin in there to seal and secure the coils to weatherproof.
Durhams wood putty is water based and works just as well, no smell.
@@justtinkering6713 Doesn't last as long, and is more permeable by water and acids.
Can lead to the corruption of the insulation and the corrosion and shorting out of the coils, eventually leading to unit failure.
Realistically, even for only limited weather exposure, it should be UV resistant marine grade epoxy.
On top of that, a disc of Mylar [a cheap 99 cent emergency survival blanket works] should be applied to the surface of the epoxy before it cures, to reduce moisture contact and ensure a longer UV resistance.
Just before one mixes and pours, cut the outer circle big enough to reach the edges of the area where the resin will go, and put a hole in the middle for the spindle, pour the resin, lower the Mylar, and with a small brush or cotton swab, sweep away any incidental bubbles for a good contact bond.
Just put the aluminized side toward the resin to keep IT from corroding.
The Mylar will [effectively] last for longer than we will live, and the aluminum will make sure that the resin does the same.
NEVER use ANYTHING porous, OR organically active, or it WILL ruin your coils.
They will 1, let in water, and 2, either allow in acids, or 2, allow in acid creating microbes.
Either of those will destroy the very fine insulation on the wire and short it out.
@@hunnybunnysheavymetalmusic6542 even though its called wood putty its not wood, its plastic and plaster of paris. But then again, its just an experiment isn't it.
cheers mate
These sorts of things would be ideal for putting in place of roof vents, and for piping your clothes drier vent directly into the center of. Maybe even having a few in the bed of your truck for portable charging? I wonder how these would work in series inside of a larger pvc pipe, to be used with the Darwin wind turbine? Very nice sir Rob. Thank you.
Absolutely beautiful and awesome.
There is a lot that could be done to improve it that is for sure. Adding a second generator arrangement at the top, adding stationary veins around the outside to compress more airflow as well as suction on the opposite side as well.
Terrific! I’m very tempted to have a line of these atop my garden wall
that would be cool
Thank you Robert
This idea but using the magnets to heat a copper bottomed sand battery of which you can heat your water.
And also run a small thermal engine off as well
interesting idea - cheers mate
Use the heated water in a spa pool hehe
Also how hot could you get the sand battery off that sort of a system over a day, 2 days 3 days etc? How many days would be required to get enough heat into that system to keep your house warm during winter?
That's pretty neat! I especially like the maglev bearing :)
cheers mate
I wonder how much weight those magnets could handle since it just needs to not touch while spinning, so putting more wind catching action on top and maybe even some more coils held in place around it, might make a nice section of a wall, and just make a whole wall of them XD (funny thing is you can find those magnets in subwoofers all the time because people buy cheap subwoofers with the amp inside the woofer, and when that electrnic bit goes, the speaker is useless with out a powered subwoofer level output which most stereos don't have, that I have seen at least LOL (working on rigging one up that is not music oriented but to use the speaker to make a washing machine using the subwoofer to shake a container with water and soap in it for agitation and see how well it works for a mini cloths washer or automated dishwashing unit that will still have to have everything swapped into plain water and shook to get rid of soapy material :) )
Awesome 🧲💯🌞
cheers mate
Hello Robert, thanks for your videos. I think some kind of a sail could be used to get more power from the wind. It would be not rotation motion but some swing motion like trees do. Or maybe we could even use the trees, because they are heavy and they are swinging on the wind. The thing is how to get the power. 🙄
like a pendulum - we did a video on how to harvest that mate - a few actually
The addition of your feather turbine onto the top of this would be interesting... downward forces pushing the coil closer together. Self adjusting pitch helps with initial momentum and continuing at high velocity.
go for it
This has evolved into the best generator that I have seen, brilliant Rob thanks.
Inspired by a previous commenter, would your conductive ink, drawing a line or multiple lines onto a roll of tape, make a very energy dense coil???
Great for designing some fan system on a wood stove. Used to transfer heat in the room.
yeah that would be cool - so to speak lol
You are persistent as hell at being informative haha. I know I have seenheard you say it is not the read outs that are as important as experiencing the flow of creativity. Maybe in some other words, hahah. Anyway, You and your channel rock and, are one of the few things I still enjoy looking at on a screen of any sort. Refreshingly true speaker. Thanks again my brother. I know it would be fun to spin something with you until centrifugal force blew it to bits hahah.
it's my natural stubbornness mate lol - and yes it would!
Might be handy to build a cover for it , so as to save the unit from things. Blowing in the wind …. Branches …. Birds …. Squirrels…. Etc .. have a. Fun day. !
If you arrange magnets in halbach array configuration, you should be able to generate more power out.
no - you would get a higher voltage - but power out is always less than power in - you can't get more than the wind is providing
It is just so beautiful
I agree lol
Watching this got me thinking of Zoetropes those cylindrical animation devices and how cool it would be to integrate the two and make billboards that generate electricity.
that is cool thinking - cheers
Install the squirrel cage in a rotating housing to concentrate the wind energy and reduce the losses due to the drag on the back side of the squirrel cage.
Just for fun, drive the generator section using a variable-speed motor at different RPMs and record the output under load to measure the generator output (volts & amps).
for sure mate
might need a bit of a tweek to get the magnets a bit closer tot the coil.... perhaps a 2nd (light) maglev on top to basically push the cage down?
make it adjustable a bit so it can be tuned ....
kind of reminds me of the difference between waterpumps that have a fluid bearing and a mechanical bearing - one is more efficient but the other will keep spinning even if something goes wrong with the fluid.
I like fluid bearings
That is AWESOME. I'd like to see a comparison. a control. let's say, can you light a candle next to it to demonsteate visually how windy it is. Thank you so much. Just awesome,
I love the maglev incorporation. I wonder if the ring magnets field have a negative or positive impact on energy harvesting over time. Perhaps no effect at all. But maglev is supposed to be minimized friction so friction efficiency has been reached. Loved the video!
Yes, as the two magnets are trying to slip away from each other, there is more force on the ceramic bearings increasing their friction.
@@darkfieldcarnivore3928 Ya, I got that. Still the maglev with ceramic bearing as a stabilizer is still more efficient then only ceramic. I was under the impression that the friction was less on the ceramic bearing as the weight of the apparatus is suspended by the mag field. What am I missing here?
@@Moist_yet_Crispy Friction is proportional to the force pressing two surfaces together. In the case of two reasonably well aligned magnets, that force is very small, theoretically 0 at the equilibrium point, even though it's an unstable equilibrium. Not much at all. As for the maglev interacting with the generator, it doesn't. The levitating magnets are spinning about their poles, so there's no change in magnetic flux coming from them. Plus the coil is on an equipotential ring so it's not going to get anything from the levitation magnets. If they were misaligned or eccentric, then the coil probably would feel something, but it would be a lower-frequency modulated DC offset.
nice mate - thank you for posting that
nothing mate - he is going with an idea and not really thinking it through himself
G'day RMS, love your attitude and thoroughly enjoy your videos. I'm curious if a 3rd ring mag secured to the shaft on the inside of and opposing the turbine mag would create a magnetic sandwich effect to keep the turbine in place yet maintain minimal friction - in other words, a North-North-South-South ring mag arrangement ??
This is awesome. Wonder how nice this will work with vertical blades changing the wind direction 🤔.
Could even make the blades adjustable for large applications so when the wind is tomuch, you can basically shut it down by deflecting the wind.
good question - I don't know - give it a go and share your findings
@@ThinkingandTinkering Thanks, I would love to that, but I stay in a flat and are not aloud to do any work outside unless its maintenance.
But have seen it in action on various CZcams channels(not easy to find) and seems to work well.
Was actually giving a polite suggestion for you to share with your viewers.
Ive made something that can can turn 2 way movement into just 1way forwards thrust using gears, i was gonna make a scooter with it on but never got round ,
basically can take a pendulum movement back and forthe and turn it into just a forward movement but probably work with your thing aswell, the wind should act on a pendulum with abit of weight be better than a standing stick which could fall over
Hi Robert, great videos however can you please make a turbine that we can put to use such as to charge a 12 volt 100amp liesure battery, please please can you do this
really? you can't see I have already done that?
@@ThinkingandTinkering sorry Robert can you point me to your numbered video for this output, thanks
@@ThinkingandTinkeringRobert, that's not really a nice answer is it? Not everyone has followed all your videos and it's impossible to search for that info🤷♂️
I would like to see you upsize something like this to see what kind of serious power it could be capable of !
I would like to see folks build there own stuff
@@ThinkingandTinkering Started a week ago :) Thank you for the inspiration and the education!
A centripetal braking/regulating system would help during excessive wind speeds.
yes it would cheers mate
How did you (or did you) manage the gap between the magnets and the coils? Heuristic? ie by tinkering? Seems like you'd want as small a space as possible without the turbine bottoming out when it starts to vibrate
Or if the weight increased for some Godly reason.
I must do a video lol
If the tip of that rod were threaded you’d be able to cinch it down and close that gap which would likely improve output
nice one - never thought go that - like it mate - thanks for sharing
Bravooo...u are really amazing , sir
wow - cheers mate
Can you please make a video showing how to actually harvest the electricity and store it in a battery?
Robert has a few videos on this. Check out some of the videos from last year and you will find that
already done it mate
I really like the maglev idea.
cheers mate
Question, how is the magnetic flux effect if your spinning part is made of metal instead of non conductive material like plastic
I'd like to see a new video made with the cage fan replaced by Robert's version of an O-Wind turbine!
that would be cool
Definitely a thing of beauty
absolutely lol
This is such a simple build with the use of the 3D printer I love it.
Can you show us a way of building something like this without the use of the 3D printer?
Unfortunately I can't afford to buy one of those lovely tools.
I have already done that mate - loads of times actually - it's basically a squirrel cage fan - you need to get one of those - you find them in tower fans
I assume those new printers are printing 24/7? 😂 Just remember, the longer they print for the faster parts wear out, just a tip from a fellow printer.
I'm loving this wind generator series too btw. You are really a great inventor mate, never change 👍
I did a video reporting on printer performance after 6 months of constant use mate - in fact - a couple of days ago lol - cheers mate
Just awesome.
Many many thanks
I'm wondering how much impact the large magnetic fields from those ring magnets is having interacting / interfering with the magnetic field from the tiny neodymium magnets at the rim - which are ultimately the ones interacting with the coil to produce the current. Maybe do a comparison of the output from this maglev version with a version using a standard non-magnetic (but more friction) thrust bearing?
Wonder if one could shield it somehow...
none at all
Interesting design, i suggest to add a flywheel with the correct weight inside the fan around the bearings housing (set between fans and bearings housing ) in addition to that the flywheel weight will narrow the distance between magnets and the coil as increase the speed (maybe) .
give it a go and share your findings
@@ThinkingandTinkering Thank you , In our country sir we do not have electricity so what about a 3d printer or neodymium magnets , if we need to charge our phones we have to walk 3 km to a store . hopefully if i get out to better place i will try , all the best .
How many amps does it put out at that 4.x volt on the fan? I think if you had the actual volts amps and Watts on screen that would really help a lot of viewers like me understand what sort of power were really working with
I am working with wind power - it's wind speed you need - anyway about 35ma
@@ThinkingandTinkering
So about 0.15 Watts. Thanks, Robert, this is the key information that we need to compare everything.
You should put a wind concentrator on its base. It is so that lower wind on an large area is funneled through a smaller area creating a higher speed. It doubles the energy generated and also protects against storms because ironically it limits the rpm at higher winds! There are a couple of scientific papers on this!
nice idea - go for it
Love the magnetic bearing mate
cheers mate
@@ThinkingandTinkering Maybe you could try Magnetic coupling for gear reduction sounds like something you could do and very interesting
Thank you for sharing this knowledge. We tried to do this design as a science project (adding a Darrieus top as well). We are running into an issue, only producing mV of power, and only at low RPM. What is the impedance of the coil expected? (We used 32 and 38 awg copper wire, 400 turns and are seeing the same result with either coil)
Robert you are BIG BIG BIG 👍👍👍
awesome mate - cheers lol
you can see it moving in just the air currents in the room, one less place to lose energy from the system.
I saw that right after I read your comment - nicely spotted mate
Those ring magnets can be obtained from the magnetron of an old microwave oven.
they can indeed
awesome, why don't replicate the same coil and magents on the top and double the power? :)
go for it
I see it was wobbling a bit so guess a top plate and longer shaft would sort that, so it does not wear on the bearings by being twisted around and keep them all working as they are made to work for years and years of trouble free electricity generation XD
Can someone tell me how Robert is hooking up the led and later on the volt meter? I see the alligator clips clipped to a copper wire but where is the other end of that wire? Is it looped around the serpentine coil?
The clips are just holding the led to the ends of the coils wire
Thank you both for your responses, I understand this part but the other end of that copper wire...is that looped around the serpentine coil?
Edit: Just went back to 1859 and noticed that Robert does have the start and end of the wire dangling off the coil. Hard to see that .1 mm copper wire. Thanks for pointing me in the right direction!
it's pretty straight forward mate - each end of the coil is clipped to the meter or the led - that is the positive of the meter or led to one end of the coil and the negative to the other end of the coil - nothing else to it
Thank you everyone! I make and tinker but my knowledge of energy/electricity is still rudimentary. I am actually making this thing to experiment with and learn...so I appreciate your help.
Fantastic Rob. 👍💙
cheers mate
More magnets inside the diameter ring inside ring and more serpent coils under them each reduction would get less energy but finding the sweet spot could be worth it especially if you take the project larger and can have three or more rings top and bottom.
Cool idea
Great work
Thank you! Cheers!
Works a little better than the single steel ball in oil bearing. But has a vertical movement to it .
you are still not thinking it through - thinking it through is about solutions too - look at the other posts there are some good suggestions - think it through! - I am not trying to be mean to you mate I am trying to get you to make suggestions on possible solutions you might have - add to the community a bit more than you are doing by just pointing out a potential problem lol
@@ThinkingandTinkering Try it, it works great.
Just like the genius behind Peter Sharps cycloturbine. You have to think beyond his videos because he didn't have the facilities to make a serious turbine. Most of his tests were using string and paper wind turbines. People pointing out the weaknesses in a design sometimes take the blinders off the the inventor, sometimes inventors get tunnel vision and keep pursuing their dream and can't or won't see anything else, a lot of times because they have so much invested in their own idea. Maglev is great but its not perfect and having the magnet rotor crash into the stator is not good. I guess mechanical limits on a maglev system would be part of the solution. Instead of crashing into the working parts it could bump into a mechanical limit bearing.
is there a geometry that could sit in the centre and remove the air from the centre as it spins? a cone or something.
yes and that is going to be needed - later! - spoiler lol
Does the magnetic field from the maglev magnets affect the output of the coil? If you shielded the maglev component from the coil would the power from the coil increase, decrease, or have no change whatsoever?
A magnet spinning about its polar axis isn't going to generate anything. There's no change in magnetic flux.
no there is no effect
Hi Robert, I like your ingenuity, and the Maglev thrust bearing. But as the air gap between magnets and coils (in the generator) is where most of the potential "power genreation" is "lost", I feel a "real" turbine needs a fixed location (mechanical thrust bearing) to enable just a couple of thou clearance between the magnetcs and generator poles. On my test generator set-up, using a simple Sturmey Archer bicycle wheel generator, the poles (without the high strength magnets you have) provide so much drag that the rotor you have would not overcome the generator knotching of the magnets. I.E. the generator start-up torque is too high for a garden wind turbine at start-up... Perhaps you can apply your ingenuity to something that overcomes such high resistance (Torque in the generator) as close magnets will develop at start-up, so the turbine can start turning in low velocity wind, then "close the gap" - or whatever - as the rotor starts to take adequate power to generate good proportion of the power from the wind? I havew considered the car alernator arrangement whereby the electromagnetic rotor is not excited much for start-up, then the excitation current is increased as the generator power from the wind increases. But this will need a bit of electronics measuring the Turbine speed, and complimentary electronics to apply excitation current to govern the power developed to that of the optimum speed of rotor, as the wind varies.
But I have clicked "like" as always.
Steamchick
I can already see it :-) Instead of fan showdown. You got Wind Turbine showdown.
lol
This is really beyond description. Words cannot convey how much the series about the wind generation inspired me. Just one question though, is how "long" is the serpentine coil or at least how can I measure the length to get the best fit for any size of circle? 👍🏻👍🏻👌🏻🏆
Think about it, you have the parts going radially in and out, and then the bends. The bends are a semicircle, so pi radians or 180 degrees, times the radius of the bend. Well, we have the diameter of the bend from the spacing of the slats so divide by 2.
That's length of a slat * number of slats * pi/2 * spacing between slats (start to start or midpoint to midpoint). Of course the outer radius is larger so you might want to take an average of inner and outer, and add a little extra for wiggle room.
He has a video on how to make the coil. He suggests you wrap the empty slots with a string first to get your length. Then just multiply that until it’s your desired thickness.
see the linked video - I explain that
@@ThinkingandTinkering thank you for your comment.
thank you mate.
Just making a comparison with 1869. Why is voltage down so much? Is that just the difference if having the coil rotated 90 degrees or are the ring magnets affecting generation? The obvious differential is how fast it’s rotating (pull cord/ squirrel cage). Design aids itself very nicely to making a wall with multiple generators.
Thanks for the video!
my pleasure
What if you use axial magnets instead of bearings? Offset them a little bit so the bigger ones is the lowest and the highest ones and then you can tighten the upper most downwards to stiffen the bearing effect and prevent the turbine from lifting.
@Robert Murray-Smith is the coil count the same as the magnet count? ie the amount of tabs on the serpentine base. I have a few mini-kegs of beer I have emptied so going to use them in a Savonius wind turbine configuration for fun, do you happen to know the best configuration for two halves of a barrel? would it be outside edges touching (ie double the diameter) or overlapping 50%/75%?
This would make a great base to build an anemometer that is more accurate at low air speeds.
yeah that's true
Tom Stanton just released a video where he made a magnetic clutch drive for his bike. It works but not very well 😂most of the energy he put in was lost to heat waste. Still cool concepts though
I must have a look