Very cool series Rob! I remember a grade school project that I built as a instructor that used the squirrel cage design very similar to your upper and lower square mounting system, however the square was 3:1 in size. Your supports which are set at 45 degrees were directed towards the outer diameter of the squirrel cage and allowed wind from any angle to be channeled and increased velocity in a tapered chamber area to greatly improve rpm.

Absolutely love it, a great man once said " If you can`t explain simply, you don`t understand it well enough ". Great talk, great project, well explained.

Robert Murray-Smith: Qualification: Masters Degree in "Applied Suck it and See". Well done mate.

8:20 you start to see a very useful way to balance the system. The free rotation going back & forth shows your heavy spot. Add a few small .5 or whatever gram weights that you find on motorcycle wheels near the top of the settled state & you're ready.

Who needs plans when it is this simple.

This turbine is more efficient in the vertical mode as the wind can come from any direction. In the horizontal position the turbine will only receive wind in two fixed directions.

Those vertical supports can be modified to become "stators"- static reverse blades which guide and direct the wind onto the rotors. At the moment the orientations fight each other and probably create a lot of turbulence.

Great to watch you having so much fun and to see your level of creativity, thanks. With very little money you could add more magnets on the top fan element (wheel) with four or six coils and double your output with very little addition investment. Thanks Rob for all the fun you provide to us.

Rob, really enjoying this series, cant wait to see the results of the finished product. I would love to see you get a KW.

Absolutely love this concept: high output, low profile, low cost wind turbine. Thanks for the insights, inspiration. Just a thought about mounting - need it secured to a rotating turntable along with some type of wind vane that would automatically orient the turbine with wind direction.

My favourite project on your channel. THANKS! Testing and power output, can't wait. Just brilliant! Thank you!

Robert, I've been watching these since they showed up. Pretty easy build as you say. I now know what to do with all the ceramic mags :-) Looking forward to the coils!

This is a great contribution to the people of the world, thank you Robert

Brilliant, as always, sir. Looking forward to the testing, at this price, I could keep adding more as parts become available and up with a setup to power the whole house. Thank you, brother.

Thank you for all the great videos. Really enjoy your enthusiasm and the time you take to share your projects with us.

Enjoying the series. Yes once you have finished please try running it underwater with air bubbles from a compressor running it. How cool would that be! Thanks for doing this project.

A great english video with METRIC speaking! Lovely! Thank You for job!

One of the BEST top 5 leaning channels on this venue! Now I've got to go, and put some great "try outs" to good use! LOL! Think I'll start with the active carbon felt wick candle heaters first, as a "warm up," and than... work my way up to these generators! THANKS!

Absolutely fabulous this series ! I am trying to build something similar and i find a lot of inspiration in these videos. A real cliffhanger now, watching to see how much it will generate !

Awsome job Robert, I enjoy seeing how your ideas flourish video by video, I think you spread the objective of your videos very well. There are always people who demand many things, but the content you give in my opinion is very valuable. Thanks, don't stop doing them. Greetings.

I have watched up to now,and even as a novice,I understand all your points.thanks for the inspiration.🤗

Nicely balanced, i'll have to watch the first 3 parts!

Can't wait to see the final results! It looks awesome .. the style and design is quite simply beautiful .. and inexpensive to build. Impressive!!!

Hey Robert, Great job demonstrating shoestring eyeball engineering, definitely a learning experience. Shine on

You done a great job at explaining everything so far really like the build. I am going to copy yours but use a pmg as the power source. This is the closest to the old military style vawt's that worked so well in low winds. I have searched for a surplus one for years at military auctions but haven't been able to find one yet.

I'm fairly certain that you are one of a kind my friend! Totally awesome build! I'm really enjoying this build, so: Thanks!

Great build, think it's my favourite so far this year. Can't wait to see how much it generates!

That thing is turning out Awsome...super nice job. Thanks.

Great work. No plans really needed here. The important thing is free movement on the bearings. Looking forward to tests. Thanks for sharing.

Fantastic series Robert! Love the challenge and general idea, excited for the next one

It’s very exciting isn’t it. I can’t wait to see the end results and performance. Great stuff.

Another great video Rob. Really looking forward to seeing some readings once you get it up on the roof!

Superb! Cant wait to see it in place and generating. Best project so far in my opinion. Keep up the good work.

You’re absolutely brilliant!!!

You make fantastic videos! Another great build. I'm almost moved into my new house so I have lots a room to start building and putting my imagination to the test. You have given a lot of wonderful ideas to inspire! Thank you!

That is fantastic, I am very happy I found your series. Looks really professional great work Sir. Have a wonderful day.

It's AWESOME buddy!

Awesome video! Thank you.

Simply Fantastic so imaginative. I'm inspired.

Bangup Job and looks like a Commercially constructed Turbine! One comment on the orientation is that are turned on its side you are then faced with building a method of turning it to match the wind direction. So to keep it vertical, you do not need to be concerned with the Turbine direction as it catches the wind in all directions!!! Looks Amazing Robert!!! Plus you can increase output with more Coils as I suggested a while back! Bravo! Here I go! #5 ✌🧑🤚

Lovely build.

I do so love your perpetual patience when it comes to the lazy shmucks who just complain. Killer build. Can’t wait to see how she blows.

I enjoy your videos!!😊 thank you. You give a lot of helpful and very useful information and guidance 🙏 very much appreciated

I like this project, can't wait to see it working.

looking forward to the 5th (and probably final) in the series. :) this has been one of my fave projects of yours.

Rob you are just a genius! Congrats !

Beautiful! Thank you!

Looking great. I could see this with angled scoops at the top to deflect more wind into the turbine. A large enough design could double as a sheltered area and a rain collector. These could be made into smoking areas, possibly a bus shelter. The water and electricity mix could even produce hydrogen. If the roof had solar panels too, and all linked up to one of you battery banks for cloudy winless days. Love this project!!

I am really really enjoying this series Robert! It is vintage Dread Mad Scientist Robert. And I can’t help commenting after your insights at about 2:30 in. Like most of my comments this is a little far a field. If you read on, consider yourself warned. Similar to how the wind generator’s marketeer’s “theoretical” will vary greatly with the user’s “reality” the same happens between the marketeers promises and users experience of tankless “on-demand” hot water heaters. A new Rinnai claims to produce 10 gallons-a-minute (38 liters). But here are the conditions: 1. The incoming water temperature must be 57 degrees F (14 C). This occurs in the United States at about the latitude at the top of Tennessee (and likely nowhere in Great Britain). (That’s the average, so a few degrees warmer in the summer and several degrees colder in winter.) 2. More important though is the temperature difference between incoming and outlet at the faucet or shower or dishwasher. If you have 57 degree F incoming water and you want 115 (46 C) degree water at your shower (absolute minimum I would say) in the morning, your flow rate is now at 6 gallons a minute (22 l). That’s not awful because the average shower head in the United States uses a bit more than 2 gallons a minute (7.5-ish l). In Seattle, Washington, where I live, in January the incoming city water supply is around 45-50 degrees F (7.2-10 F) and my minimum temperature for a shower is 120 F (49 C). Now the flow rate is 5 gallons a minute. 3. Those numbers are for a top of the line, state of the art Rinnai RU199in, $1666 on Amazon and you will pay that much at least for installation. 4. Finally, unless your natural gas line and meter was installed with a tankless water heater in mind you will likely need a bigger line from the city main and a bigger meter. The sales person won’t inform the buyer of the real world numbers. The salesperson likely only knows the ideal theoretical numbers. And for sure NO ONE at Amazon will know any of them. This is why, you see so many disgruntled angry reviews for tankless hot water heaters EVERYWHERE. The customer over expected the flow rate. The customer under estimated the temperature differential (or more likely didn’t even know). The tankless unit itself is under fueled so the flame drops out then restarts then drops out. And what do you suppose is happening at the shower? This is not meant as a rant. My tankless runs flawlessly, producing 135 degree water in the winter sufficient to have a shower, the dishwasher and the washing machine all going at the same time. My point is, whatever the wind generator salesperson promises, divide by two (to allow for the marketeers lies, misinformation, and ignorance), then reduce your expectations by 10% (to be safe 20% is better). Then look for the wind generator that will serve your needs. Or better yet, follow along with The Dread Mad Scientist Robert and make your own suited to your needs. Thank you again Robert for sharing your joy and your brain. Your YTs always delight and never fail to inspire.

Simple yet efficient Thank you for another great one

I love your projects. 😅 I always end up with a new project on my going to do next list! I think im scheduled out for the next decade between my own nutty mind and your projects!

Haha love your thinking. You would fit in with us if you lived in Australia. Cheers Robbo well done

You are saving the world ☺️

Very cool Rob. This is shaping up to be a really cool turbine indeed.

That’s really impressive Rob, love it

Very interesting stuff. Can't wait to see it in action. You've got yourself a subscriber.

It's all fun and games until you catch all the wind and stop the earth's rotation... :D excellent build! Cheers!

That's fantastic. It's ganna work well!!!!

Awesome Sir Robert! That's a beautiful piece you have built. As others have mentioned the unbalanced rotation may need a quick fix but I think you have built something with lots of potential for increases in flexibility. You can add to, or change this or that. Lots of versatility. Well done sir!

Thanks so much for doing this and uploading... can't wait for the next video... keep up the good work!..

When you mount this on a flat roof, try extending the baffle plates to the four corners of the roof; ie several feet long. That would substantially increase the volume of air ducted into the wind turbine. That might be worthwhile for most of England where wind speed is usually low. 😀

Rob, someone may have already suggested this but it looks ideally designed to fix onto a car roof-rack for testing? Then you might be able to use a still air day, drive at known steady speeds and produce repeatable results. You can't do that with a big bladed turbine! And the protruding threaded bars are perfect tie-downs. If the police stop you just say you are taking a tie fighter to the film studio!

Loving the series and it's good to see theory put into practice. I'm confused on the purpose of the baffles or why the blades are straight and not twisted like a propeller. I'm certain there will be good explanations for both and would like to hear from other people on this.

Enjoying this series. Looking forward to seeing some numbers once you've got it in place!

Looking good! Thanks for the upload.

I would love to see these beside the highway. Anyone who's ever tried to change a tire on a busy interstate can attest to the strength of the wind, especially from big trucks.

That tripped me out when he put his hand on it because my eyes thought it was 7ft high and 20ft behind him on the floor!

Hi Rob. Pretty impressive. And the build standard looks really good. One thing, though :- the baffle plates are normally oriented so as to direct the airstream into the rotor on the downwind (drive) side and away from the rotor on the upwind (drag) side so as to minimise the adverse drag. The way you have them oriented on the upwind side will actually increase the adverse drag. I hope you don't think I'm nitpicking, I'm just trying to be helpful. I'm sure it;s going to work well.

What you said about the 1kW commercial turbines producing around 100W is very very true, I have a 300W turbine and in strong gusts it can generate about 4A at 14V *momentarily* .. you would need a storm to reach their rated output power with most wind turbines By the way, where did you get those magnets from? I can't seem to find a good supplier

I’m thinking this could be a turning point very smart move with the steel 12mm rods and yes use the rest as feet a forklift can get it up on the roof if not it’s a build on the roof doable and does spin really well loving the smart board clean touch can not wait now

That looks massive !

Rob. Its looking good. And I have no experience. However I believe the baffle plates at the current angle will reduce wind efficiency. You could rotate the baffle plates anti-clockwise to direct the wind into the blades. But a possible better solution would be to use 1/2" or 3/4" pipe instead of the baffle plates. Looking forward to your results.

No plans are the biggest reason for why I like this one so much. Those perfectly placed and beautifully balanced bearings made me smile too, (is this what serendipity means ? )

In the vertical position its multi-directional, it will run regardless of wind direction... however... in the horizontal position it needs to be steered into the wind to generate ... 😎👍☘🍺

I am trying very hard NOT to just watch the final video before those that came before! I am binge watching these in 5-2021.

As a resident of Brazil I find this very interesting. Unfortunately resources here are scarce for the low-dwellers and our government makes it clear that we have to make the most of what we can get for ourselves. Thank you for this elaborative video

Bifilar coils can be tuned to prevent cogging. The tuning will be easier to figure out once you know the resistance and inductance, then pick the right size variable capacitor to tune it. The back emf can be used as a boost instead of causing the cogging action

Good series mate given me alot of ideas for the wind turbine I'm 3d printing

Learnt from Enviro Physics class that power is WindSpeed^3 (cubed), so the max wind speed is very important for selecting a site.

Thank you very much for your videos. I think the channel is amazing

You double the output by placing another set of transformers and magnets on the top disc as well as on the bottom. Practically it should be mounted with the turbine spinning vertically if you have multiple wind directions throughout the year. It could be mounted effectively horizontally if the wind blows from the same direction all year round. Great Job

Looking good!

It is looking very good.

great project so far! Good construction as well.

*Hi Rob,* thats a thing of beauty. Well done on a great build. Just thinking about your threaded bar, perhaps they could be used also as a way of connecting + _ in the wiring process. The fins are a great addition. Would putting a tabular drum inside the cage improve air flow? Anyway, thanks for your videos and hope youre keeping well, all the best kieron

Looking good, and looking forward to your next video.

Bravo, Bravo!~ Love this congratulations!~

Hey Rob I wanna say thanks for giving me the confidence too start making my own wind turbine I have short videos of the fan I'm gonna I'm turning a 2hp electric motor that was with it into a generator wish me luck

That is better than my idea to make a wind generator that uses a vertical wind turbine that has some spring arms to slap some piezo elements to make electricity.

Great build. A beauty and well balanced. It is rotating so nicely and smooth that it promises a great speed even with several coils installed and thus resulting cogging in action. I am curious if you are planning to test a N-N magnet configuration after that N-S you did here...

Murray YOU ARE UNREAL

Good explanation and great video. Thanks for the design details and rationale. Looking forward to the running test. I hope that you return someday to the cuboctahedron rotor -- it would look great and probably work well in that same cubic enclosure.

Nice job Sir

This looks brilliant. I would like to purchase a unit like this from you. I am moving to mountain property which has high winds most days. We are using solar but not all days are sunny. Most days are windy, especially near the top. I cant wait to see it finished and tested as the comercial variations are expensive and do not have very promissing reviews. Thank you for making these videos as it gives me and my family hope of obtaining wind power on our mountain.

cant wait it just gets more and more interesting

Hi Rob I part made a similar thing using bike wheels and drainpipes but I didn't think about coils and magnets hence my motor only generated 2 volts so I got fed up and forgot about it but now thanks to u I may revisit this

Lookin good,can't wait too see it with some coils in an another test of Volt's an amp's

I built something like this on a smaller scale about twenty years ago. I'll be interested to see your approach with the stator. Lots of home-brew wind turbine info suggests winding multiple coils and overlaying them. I found this messy and complicated. I finished up laying two rows of pins around the perimeter which were spaced at the same pitch as the magnets and then ran a continuous conductor out towards the edge and then back towards the middle on the next pair of pins and continued around the stator several times. I stuck it all down with epoxy and then removed the pins. (This would be a lot easier to explain with a diagram) That provided one phase and worked really well. It might be more challenging to attempt this with the gauge of wire that you'll be using. I did begin a three phase version where I had the same configuration repeated three times at 1/3 the pitch of the magnets, but then I got a proper job and the project ran out of steam. I've still got a few bits laying around.

This is so cool

Oh, I eagerly await your next part on this project, and thought this would be the one where we see it spinning nicely on your roof. Oh well just a bit more patience, I’ve watched all your renewable energy projects and think this is by far the best!.