1755 How To Make A Super Efficient Wind Turbine - The Ugrinsky VAWT Made Easy
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- Опубликовано: 11 сен 2024
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I love this guy. Reminds one of a shop teacher I had. Guy loved showing guys tools and how to use them. He told me I was a natural at welding and I should go into it. I knew better, and regretted it. Like the teacher this is the kind of person teachers should be
Agree with you 100%!!🙂💞
He makes learning fun ! He’s like catnip for fabricators
Robert is a natural developer with a love for the process, procedure and application!
I always enjoy watching him.
@@12thsonofisrael Absolutely!! Robert is a naturally great Teacher!!
I wish the teachers Id had when I was younger,,,
had been a quarter as good,
Id have learned much more at school,
by 100%!!
I hope you have a wonderful weekend!
oh wow - thanks for taking the time to say that mate - it really is well appreciated
HOLY SHEET.....I just found this channel and currently binge watching all the content....PLEASE keep making content my dude...you rock! 🙏🙏
6:26 "It's an absolute breeze to make"
I see what you did there! 🤩
lolol - always worth a pun or two when someone sees them mate - nice one!
Wonderful! Re "L=1D" (in your case = 200 mm), I note in page 2 of the paper it says
"In previous research, the optimal dimensions were (S, L) = (0.35D, 1.3R) for maximum power
coefficient and (S, L) = (0.35D, 1.0R) for average power coefficient"
and at the top of page 8 of the paper it says...
"...From the stability point of view, while the Ave. CP of L = 1.2R was the highest of the calculated models, the L = 1.3R model showed less fluctuation and a stable average power coefficient, from TipSpeedRatio = 0.5 to TipSpeedRatio = 0.7"...
So L=1.3R (0.65D) seems to be optimum. i.e. (S,L)=(0.35D, 0.65D).
Salvonias papers say that putting disks on the end is helpful, and that the length of the section should be about 1.5 times the drum diameter.
So for your 200 dia version, putting disks on the end of a 300 long set of blades should do very well.
Then you can string sets along a shaft, with each set rotated by about an 1/4 (for a pair) or an 1/8th (for more) of a turn from its neighbour to level out the torque curve.
Interestingly, the paper notes that this Ugrinsky turbine has positive torque throughout the entire 360 degree rotation, compared with the Salvonias which goes negative for a couple of parts of the revolution. Nice.
The workbench is calling!
spot on mate - but what you are saying is great for when folks want to dig deeper - but to get folks going I tend to think clear and easy is best and that's what I went for - but I am aware of what you say and totally agree
Robert you are a natural developer with a love for the process, procedure and application!
I always enjoy watching you.
cheers mate and you are right I do love it!!
Very nice, simple tutorial.
I was thinking about the simplest way to make a wind turbine with materials that will stand up to rain and I finally thought about using a plastic soda bottle. If you cut the sides, you can bend them out into flaps that will catch the wind very nicely
nice idea mate - cheers
once you cut the soda bottle its strength is lost . suggest leaving the bottom and top parts uncut to retain some strength.
@@snuffoutrouge5109 Yeah, that's what I meant. I cut only the sides to fold out into flaps. The top and bottom I left intact.
Now for the wall. It will be a work of art only functional. Little tip to make your glue stronger: Add graphite or graphene powder to your bicarbonate powder then add it to the glue. It makes a much harder end product. The mix will take some guess work. I would try 2 parts bicarbonate powder to 1 part graphene or graphite. Get the mix right and it makes JB Weld look soft in comparison. You won't need it, but best of luck with this build Rob! Thanks for the inspiration on the turbine!
Would pencil lead work? Considering it's actually a mix of graphite and clay.
@@kf8113 It should, just grind it to a very fine powder.
@@kf8113 Experiment to find the right mix though.
@@kf8113 yes it works, saw video of exactly that 4-5 days ago.
I thought bicarb made the glue set instantly. What kind of pot life do you have with this stuff?
Amazingly simple. I'd never heard of the Ugrinsky turbine before watching this channel. And it's been around since 1946. I searched for Угринского or Угринским (Cyrillic spellings) to find out more. It appears that the Ugrinsky schematic could be from a book by B.B. Kazhinsky “Free-flow hydroelectric power plants of low power”, Gosenergoizdat 1950 (Б.Б.Кажинский «Свободнопоточные гидроэлектростанции малой мощности», Госэнергоиздат 1950г)
that is very interesting thanks for posting that mate
I think this would be easier and lighter if we use fabric. Just make a cut out that clamps the fabric in-between cap the ends with whatever. Hangglider pilot, so have always thought about making these wind generators out of used glider sails.
I instantly thought of water would work in slow moving current. There is another design similar to this that has a natural sea shell design that is used to stir huge volumes of water way more efficiently then regular propellers.
Integza 3d printed golden ratio impeller. Shows it with wind and water about 2 years ago. Gets into the gear ratios and different motors as well.
Just out of interest do you know if there is any patent in place or could this be manufactured without any chance of legal issues! I could not find any patent but am Australian and don't know any Russian so researching is impossible.
I heard about the reaction of bicarb and superglue a long time ago from someone who said it was used for emergency repairs to chips in helicopter blades. It is really makes a strong bond and can be used for building up layers to repair models etc that is easily then sanded to whatever shape you want. My headphones used to listen to this video are only still in use due to such a repair after they were stood on :)
It also makes an amazing snow texture for winter themed tabletop wargaming models
You're the G.O.A.T.Mr. Smith!
well cheers - I think lol - what is GOAT?
I am in awe of how your mind find solutions to these problems Rob. Once again, another great video.
I was a bit disappointed when you originally auto defaulted to the 3-D printer, but I knew you would stick with it and boil it down to the basics for the "bare bones" folks. Good vid!
lol - you know me too well mate
All this talk about wind turbines and rocket stoves gets me thinking - the exhaust gases from the chimney of a rocket stove are moving pretty fast... 🤔
"totally metal" -Nathan Explosion
thermal electric with that on top boosting could be pretty good..
output if the wind blows, or if a fire is built (winter) even more output.
why not?!
now then that is an idea lol
So having made your blade it could be used to form a fibreglass one by using as a former or mould. Do the same for the edge circles and add on bearing holders on the outside the whole item could be made integral and weatherproof. The has relevance near salt water environments. Whole system seems to have much going for it. Thank you for your learned disposition.
for sure mate - that's a good idea.
Still one of the most underrated channels on RUclips. Keep at it!
thank you mate
Nice one Rob. I've seen a few 44 gallon drum Savonious rotors that didn't really move me to make one but the Ugrinsky being that much more efficient sounds good.
I've long harboured a desire to build a big kids pinwheel rotor just for fun (no idea of their efficiency but painted up it would delight my eye).
yes I am quite fascinated by it too mate
One of the reasons more people have not been making Ugrinsky turbines may be due to the fact that Ugrinsky did all his research behind the Iron Curtain of the Soviet Union, and his work did not become known in the west until fairly recently, when turbine enthusiasts in Russia put his design online and started cross-pollinating ideas with western turbine enthusiasts. I'm almost certain this actually began on those 3D print online forums. Ugrinsky never published his findings in any western scientific or engineering journals.
If you think about it, the Ugrinsky turbine isn't that much more complicated than the Savonius. It still consists of circular arcs. The math behind the shape isn't super complicated either. The ratios are simple; no calculus nor even algebra is required. I think the obscurity is a more likely factor for its lack of popularity than its complexity compared to the Savonius turbine.
It’s good to watch a video that has been fully prepared. Rehearsed even.
i read around then just say what i think mate - cheers
Another masterpiece... excellent!!!
Thank you! Cheers!
I remember this one gluing trick/tip for wood with wood glue and saw dust. Thats it for holes in the wood just use saw dust mixed in wood glue and when it hardens you can easily sand it the way you want.
it's a nice tip thanks mate
I couldn’t help but notice the axis was horizontal for your example. I found no discussions on the matter, but your example resembles a roof peak generator I saw on RUclips. I plan to build soon, earth-berm nearly flush into a steep hillside that has relatively strong consistent winds out of the west. It will have a low slope roof and need a safety railing of some variety. I expect it will act as a large wind collector, and I’m researching options. Provided it had the necessary stiffness, can you think of why reason why a fairly small diameter, 20m long turbine on a horizontal axis (mounted to the top of the rooftop safety rail) would not be a viable, relatively easy option? I love your work, it’s easy to see you do too!
Love this channel 👏 Robert, when you laugh like a kid with excitement - that makes my day. You are a true maker and explorer.
Awesome, I'm working on a wind turbine today too lol. It will be a vertical axis with guiding blades around the outside.
nice!
This is the classic example of why I struggled at school, once it’s explained in a way my brain can absorb it all of a sudden it’s much easier. Now I just need to find some workmen laying huge gas pipes and blag a short off cut.
I was thinking maybe paint tins!
That’s great information and I think I’ll have a go at making one. I think I will start with thicker disks, mark out the curves on the disk and with my dremel drill press just route out the curves so that I can put some soft sheet material in them.
I like that idea nice suggestion mate - maybe Ali sheet?
@@ThinkingandTinkering yes that’s what I was thinking but there’s all kinds of sheet options.
Robert, you could also make this turbine using sheet metal and a wooden board or that composite board material, cut to that template shape, screwing the sheet metal into the board from the outside. You had mentioned that you could use your 3D printed version to trace out boards for this. In your 3D printed flat-sided Ugrinsky turbine, the 3D printed part was on the outside, the sheet metal was adhered to the inside, and you bolted it on in that order. If you made wooden templates, you could just staple or nail the steel to the wood from the outside. I think that would be a better way to build the turbine. The sheet metal method has the potential to involve less mass per intercepted area of wind.
It's easier to use Sewer pipes d=160..400 mm.
Stack of 3 turbines H = 0.75D (each other) with a shift of 60 degrees is the best solution.
Robert, here's an idea to try. Make a hybrid Ugrinsky-Darrieus turbine. Here's why:
The Darrieus turbine is a lift-based VAWT that has a higher efficiency than the Ugrinsky, but it is not self-starting, because the air foils need to slice through the wind at a certain speed for the turbine effect to begin. The Ugrinsky turbine is self-starting, but doesn't have as high a peak efficiency.
If you make a Darrieus turbine whose central column has an Ugrinsky turbine on top (perhaps on the crown of the column, if the central column would be too large to work well inside an Ugrinsky turbine and would disrupt the aerodynamics), when the wind blows, the Ugrinsky will start it spinning, and if you size the radius of the Darrieus turbine blades just right, the spinning of the Ugrinsky turbine will be enough to bring the Darrieus turbine's air foils up to the cut-in speed, even at fairly low wind speeds.
If you do an image search for Darrieus-Savonius wind turbines, you'll see some examples where Darrieus turbines are coupled with a Savonius turbine in the central column to spin it up to the speed where the air foils of the Darrieus turbine take over. Due to the Ugrinsky turbine being more obscure, nobody seems to have tried this with an Ugrinsky. All of the hybrid self-starting wind turbine systems out there seem to be based on Savonius turbines.
If the Ugrinsky turbine is significantly more efficient than the Savonius, I would expect a Ugrinsky-Darrieus turbine to work even better. Could you test this out?
If you have coefficient of 0.4 or more in darrieus model you dont need starter
@@Tomy_Stank I'm curious to learn more about this. Could you link me to where I can read more about this?
Morning Robert, great video. If we had a string of these along a ridge line of a roof the energy potential would be well worth the effort. All the best.
absolutely mate and my thought too!
I don't know if you are familiar with the Project Kamp team, but think they are researching using wind power for their off-grid intentional community. It would be great if your teams could work together, and it would be really cool to see some collaborative videos on the subject. That's assuming a trip to Portugal is feasible anyway.
Robert, from looking at these diagrams it looks like the central channel is 1/5 the overall Diameter and the radius of the S- small circle is also 1/5. By dividing the overall diameter by 5 also seems to be an easy way to find the values. When I drew it out it seems identical. Your helical 3 D printed is a beautiful thing. Very Ying and Yang. Can you tell us anything about the history of this design? It seems like it would work well in water also.
I have gone a water test - I must post it - there is leeway on the formula I gave I just gave the formula set for best overall power - but there are different condition opitmisation sets of formulae - no point clouding the issue at this early stage though - but if you read the paper I suggested there is a lot of info in it
@@ThinkingandTinkering I built one of these today using schedule 40 PVC pipe. The 8" and 3" pipe are the correct ratios.I got five of the L-large sections from cutting the 8" on the table saw, the 3" gets cut in half. It makes very sturdy blades about 1/4" thick, suitable for use in water. It's important to note that PVC pipe wants to close on the saw blade near the end of the first cut, so inserting a wood shim in the cut to hold it open prevents that. I use a section of cedar shingle. The overall diameter is 8 1/4 ". PVC glue and threaded rod hold it together. It came out pretty good and should last a long time.
Guess I should have added that I used some 1/4" Lexan for the end caps and the PVC primer and glue seemed to be compatable. 12" L x 8 1/4" D.
Hi my lovely smilely friend with a mountain of knowledge i love the part where you said its a BREEZE TO MAKE like the pun Thanks. ❤️😊🙏☯️☮️
I myself have been trying to find an easy way to make one of these, I've found the easiest was to cut a metal drum in half and stick them together with an overlap and that worked really well, savonius design though
Awesome...TY for data.
Any time!
I passed this on to a coworker who is building a vawt. He was going to use stainless steel mixing bowls. Lol. I told him there's a little more to it. Hopefully, he will follow your video !
I used to work for RePower, here in the States. 2 megawatt hawt's. It's a shame that even the 4 million dollar machines are not very energy efficient.
I wonder, Rob, now that you've got a 3d printer, could you print a guide to glue/screw onto a flat round, that would let you insert a piece of sheet metal into a slit and bend it right there as you install it?
see video 1754 mate
@@ThinkingandTinkering Oh, 1753, but yes I see it now. Somehow I missed that one.
I'm looking forward to seeing you make a wind wall with this.
Although seeing it on a roof top would be cool too. The wind tends to speed up as it approaches the peek. I just wonder if there is a performance difference if the wind hits one slope or the other first.
it's where I am heading mate - you can't really make a wind was with 3d printing on a little printer - I would be printing for years!!
Hi Rob, as I saw your printer busy, it seems pretty slow indeed, I assume you are using default settings, the printing speed can be higher, there are many ways to change it, as a bigger nozzel diameter, you can bore it yourself, thicker layers, more acceleration in the ”straight” parts for example.
Cheers.
Yeah those ridgetop ones look really interesting.
Now I 'm waiting for wind wall build.I wonder what would be more efficient, connect bunch of these to one bigger generator by means of mechanical transmission, or each section to separate smaller generators running in parallel electric circuit?
@@danielreborn4707 I'd think one can have many sharing the same axle. But I think mechanically linking several parallel axles would not be the the most efficent, but because motor generators tend to be pricey, gearing a whole wall to one larger motor might be a reasonable tradeoff between efficiency, output and cost.
Amatures wind turbine makers often overlook an aspect of wind turbines is tip speed ratio and where the turbine performs the best, and matching a generator and load to the turbines best performance tip speed ratio. That is, If one maps coefficient of performance on a vertical axis against tip speed ratio on the horizontal axis, one will find every kind of wind turbine has a curve with the maximum efficiency at a certain tip speed ratio, and the efficiency drops as the tip speed ratio increases or drops away from the most efficent tip speed ratio. Then one needs to ensure the generator is properly geared to and can load the turbine such that it keeps the turbine operating close to it's best performing tip speed ratio And the chosen electrical load force specific generator is important here too. Getting All this right can seem overwhelming, but the effort helps get the most energy from the wind.
Thank You so Much for Sharing this Robert!!
Now, I Think I may well be Able to Make this,,, using some plastic bottles that I have!!
(Recyclable plastic!!)
Now, because this brain of mine works a bit different,,,
I might be making the S-shape, to fit the 'base, ' to the blades of the Turbine.....
( The math still works?)
I will be able to fit them on to the Outside of my window,,
(in order to be able to capture the wind!)
Because I am on the 2nd floor flat, and have no access to anywhere higher up.....
I've got a few little Motors/ Generators, from Blenders and a Vacuum cleaner to connect them to,,,
You've got the grey matter ticking!!
Thank you Robert,🙂
Andrea and Critters. ...XxX...
awesome and yes you can pick any starting point as long as the relationship holds up you will be fine
@@ThinkingandTinkering Thank you so Much!
Goodness, you get up Early!!
Thank you so much for replying,!!
Ive made a start on them already,
( Im making Two!!)
~Just to start with, then ,when I get them right, Im making a small wall!!
Have a great day Rob!
!Really, Thank you!! :0)X
I really love this channel, but would love to hear more about the electrical connections to battery systems, and existing PV systems for real domestic use.
Very nice! Ty
cheers mate
I wonder how many wind generators will be built following your master classes ? another very informative video thank you.
I hope a few mate - they can make a difference
Starting out with a 55-gallon drum! Here we go!
I recall one of the long standing problems with VAWTs is that most of them aren't self starting in lower wind speeds where most of the "standard" windmills will at least start to spin even in a light breeze. Does this one have that same limitation? It looked like the fan you were using was moving a fair amount of air to get the turbine spinning.
Ugrinsky-type has one of the lowest self-start speed.
Just use stack of 2 or 3 turbunes with a shift of 90 / 60 degrees.
Most used in DIY is stack of with generator between them
Awesome Rob love the simplicity
cheers mate
"A breeze to make" nice pun!!
200mm diameter round pvc ventilation duct is cheap and light weight, ideal for this project and available in one metre length, with end caps I use them for storage normally.
Bravo . Good desing ! :)
Gotta love a little maths and geometry.
absolutely lol
Great video
cheers mate
Robert, I'm thinking of building a wind turbine for heating and electricity. What do you think is the most efficient turbine ? a battery of this one one the roof looks quite efficient. But don't you think your 100£ wind turbine is more efficient for low wind ?
Thank you for sharing all of those, it's really precious knowledge !
I just spend some hours watching lot of your wind turbines videos. And I guess this one will be the most efficient on a roof ! That's really clean design and using your idea of low wind turbine with that design could be the best somehow !
I'd love to try. Hope I'll be able !
I made a VAWT using lengths of plastic gutter many moons ago .. the vertical blades were hinged at the centre pole .. I figured this would cut drag when the blade is heading into the oncoming wind and open out when the wind catches it (don't know if I made that clear lol) .. it was bloody noisy! XD
I'll bet lol
I saw a vid that demonstrated that very fine graphite powder and super glue was much stronger than using baking soda. Try graphene with superglue? :)
well that's good for me I have a lot of graphene as I make it - but not so good for others mate - and graphite - I read it has issues - like too fast a setting time and it is very very dirty
@@ThinkingandTinkering I like the way you always think of others. That's your best trait I think.
😘 thanks for sharing.
It’d be great if numerous ppl started making these (not to get rich but to enrich all) and creating a simple system and sell to neighbours and community. How Great would that be!!!?
it would be awesome mate
We get some wind sweeping off the fields where we live - all going to waste! Even I could probably make one of these, but what do we do with it then Robert? This time of year (November it gets windy (and wet) so it makes the house colder despite the insulation.
Next step, please!
Would you mind talking a bit more about sourcing and 'reclaiming' generators to attach to these turbines, please?
Robert has made quite a few videos on this subject,,,
I'm going to be using a couple of old Blenders, and vacuum cleaner motors for generating using this!!
I hope this helps!!
@@AndreaDingbatt Thanks, yes. I've only been watching him for a few months and here 'old air con', etc. but I've no idea how to guesstimate what's appropriate.
not at all mate - but I have done a few videos on this topi already
@@ThinkingandTinkering I shall search in the back-catalogue
Rob i've been thinking about your sand battery from a kettle element video -- and had the thought : why not heat it in the kettle directly ! (so long as it's a metal one) .. just need to replace the thermal cut off set point to something higher (if that's something easy to do)
grab a sensor from an old coffee maker?
I think you could do that as long as you don't melt the plastic mate so a thermal cut off would be essential there
do you have any videos showing how practical ways to use these to make realistic power for practical uses ? in the video above, that small turbine, probably would make a small amount of power, so how many would you need to scale to make enough power to charge a 12V 200ah lithium battery ? That way we can compare these to solar generators.
Welcome to Shop Class !
shop is awesome!
yup! I hear something rattling around up there!
awesome
Well my life is completed now that i'm building something that i need to think of LSD. Robert, what a great explanation of the LSD too.
lolol - cheers mate
Genius, mate. Thank you.
cheers mate
Could we easily hook some of these up to a sand battery to create small space storage heaters using the car fan generator idea? Would they produce enough power to heat an element in a sand battery? I have a small 5 by 7 foot studio but would love to see it tested before I try it myself. Brilliant ideas on this channel, thanks so much Robert.
I don't know mate - sounds like a good idea - I am afraid I am unlikely to test it though - but if you do give it a go let us all know how you get on
So, I'm looking at this, and thinking I can stack many many 11 3/4" tall Ugrinsky's on a threaded rod axel to make one 6 foot tall set. And I can probably dramatically increase the capture area by simply setting up 8 strips of 2' wide plywood in an octagon's diagonals to help channel Moar Power! arr arr arr! in.
And these slats can hold the coils for the generators, set every 12".
The cheap stuff vinyl roof guttering nearest me will flatten out to about 11 3/4".
Great tutorial, thanks!
cheers mate
As I guess it looks drag type VAWT which are not more efficient as uplift type VAWT.
Also it need high torque to start so I guess it needs starter to starts
But in uplift type if you have coefficient more than 0.4
U don't need starter ,also it revolves at low torque
(according to my knowledge,
Pls proof me wrong if I am)
Would very much like to see, as another had commented, to take this design to the end and charge up a 12v 100Ah lithium battery. Create a set of plans that we can purchase from the site. Selling plans would provide a funding source for the channel. I have the desire and funds but not the time to experiment. I need to go from plans to putting it to use - charging batteries!
Many already know this, that various wind directors and-or deflectors can improve efficiency.
cheers mate
@@ThinkingandTinkering After thinking about my comment, the efficency of the generator wont actually be increased, but it will only appear as if it did, and the increase of the energy output is due to the increase in input energy, ie concentrated force or pressure upon the blades.
U Crack me up! U r borderline insane in a goodway!!
lolol - cheers mate - I well I think cheers lol
I make and use welded steel Savonius rotors which act to start up two accompanying Darius rotors on ALL my VAWTs, each of which pumps air.
nice - want to try the Ugrinsky? - it is supposed to be 54% better than savonius
Love is video make me feel less stupid at the end of each of video
Rob I was wondering if you've considered hiring a production crew? The info and inspiration you share is already Gold but with good camera work and editing your channel could easily be Platinum 👌
I don't have the money mate - it pretty much comes down to that - maybe one day if I reach that glorious million mark lol
@@ThinkingandTinkering I think you're well on your way, keep it up!
@@ThinkingandTinkering I like the genuine nature of your channel the way it is. I think the toffs call it cinema verite
Jesus, Robert, so many interesting designs I don't know which one to try first 🤣🤣😂😂
I know what you mean - but the design you choose has to be one you feel you can make
I read the drawback is the returning side of the blade has to overcome the wind so reducing efficiency, would placing it in a box and adding hinged louvers to the returning convex blades and leaving the concave blades open make any difference?
I don't know - want to give it a go and see?
For the rooftop configuration, would you add a few of these or is there a wide or broad fan (like the tower fan you made earlier)? I've seen broad fans like grassmower blades, but have a feeling they are not very good?
it will be a few in a row mate
Hey, the second law of thermodynamics only works in enclosed systems. The heliocentric model disappears just like that! 👊 you’re welcome 😇
lol - cool
@@ThinkingandTinkering love your videos. Only found you a week ago. Watched a lot of your material the last few day. The carbon film wick is a game changer. I can now easily heat my pond waters. Thanks 🙏 Godbless!
Closed systems are entirely conceptual and do not or rather cannot actually exist.
E=MC² only applies to closed systems.
You get my drift.
@@reeferbeleafer9912 E=C2 no need for mass. If you can make a rock float then where is the mass? It’s electromagnetism what we see. Frequency and vibration. Harmonic
Resonances.
@@reeferbeleafer9912 we live in a Terrarium. The biggest perpetual motion machine ever built. The sun is our heat and energy source and the moon is a cooling light acting like a capacitor. Moon light is warmer in moon shade.
Brilliant mate
cheers mate
I really like the simplicity of this, but my mind gravitates back to the 3d printed helical vertical version for wind. If you are printing the shape, why not create a cavity in the blade which is full height at the axis and curves upward at the tip of the blade. If the cavity is filled with a fluid or dense balls like BBs, they will roll or flow toward the tip at higher wind speeds and maintain a more consistent rotational speed between gusts. Let me know if anyone tries it!
Thanks,might try this.
One point of confusion. The drawing you flashed up a couple of times had two blades. Looks as if the one you made had only one. Might be worth clarifying in the description.
it's two blades mate - I didn't really dwell on it as the other images showed two blades and if you do a quick google you will see two blades
Hi Rob, does it make any difference which way around the blade is oriented? Would it would just as well if you rotated it 90 degrees?
yes mate it would work just fine I believe
That would also allow the turbine to maintain efficiency through a a greater range of wind directions, wouldn’t it?
We get a lot of swirly wind here, due to trees, that cannot be cut down.
I wonder could to be adapted to sit on the ridge of a ROOF similar to the Ridgeblade?
I think that this may be where they are going to be put!!
Re -Something said in another video,Rob made about these..🙂💞
yes it can
@@ThinkingandTinkering sick!
Hello Robert.
What in your opinion is the most efficeint wind turbine to DIY? I mean type of turbine?
If you formed one arc why don't you form both from one piece of PVC? If you made a simple positive and negative form and put in a heated sheet of PVC you could make heaps of them pretty quickly. For the PVC you could slit 100 or 150mm pipe. I would work out the blade size to fit the pipe I intend to use so there's no additional cutting or waste.
(FETAL HEART ATTACKS UP BY 1200%) This video on youtube needs to be watched by everyone that has children on Parents planning to have a family.
?
You lost me at the first S 😵💫🤔🤯😁😁
I feel like I'm going round the bend😉
Seriously though a very useful guide and as always a joy to watch.
it is a difficult one to simplify - but I wanted to try as the performance is supposed to be so much better
I guess when he put his compass on the circle that it was 200 mm (I can't really understand everything he says) which is about 8 inches -- which is a radius -- and then transferred that circumference from his 16 inch diameter coffee pot to the material he was using.
I think that's the way it worked.
Hats off Sir Robert!
I have a few question... I'm planning to make a wind-wall(or a roof top if it's allowed here in HU) from these type of blades + gutted out two huge HP copy machines for BLDC's. I have 10 of them.
What you recommend for the shafts?
After i rectify individually the BLDC's should I just connect all the plusses and minuses together?
What diameter of wire/cable should I use? I was thinking 2.5mm would be ideal to be on the safe side(heat loss on DC, 30 meter cca) or can I use multiple 1.5mm rigid wires wich I have.
And finally the heater element. Hence I have no income, batteries are out of reach for me. I'm collecting every garbage, and already collected some elements from water boilers, micro grills, ovens etc. What wattage and resistance elements would you use? (in sand)
Interesting project. Keep us informed how it goes!
that's too much to write in a reply mate and I have done quite a few videos that answer some of your questions - can I suggest you research it some more - I will try and do a video on the missing answers but it won't be done by tomorrow lol
They are already making chitin based batteries. So maybe something like that could store energy from your wind turbine.
As good as this is I wonder if it wouldn't be better to focus on developing lift type verticals since the basic lift type starts off so much more efficient than the savonius type.
I wonder if you can fit 3 blades on this design? seems to work on the computer software.
havent seen the full video. But if you just print the side view of that turbine on a piece of paper, grab yourself a gluestick or whatever and glue it to a piece of wood or metal, whatever you want to use and then grab a jigsaw you can just cut it pretty easy. And for perfectly symmetrical parts you actually glue or screw 2 or more pieces of your material stock together and then cut through them all in 1 go, also drill your hole for the axle and then you seperate them. Perfectly symetrical and perfectly in line. And if you got the sides made then just nail your sheetmetal to your wood, or weld it to your metal or solder or whatever you want to use for it.
you could mate but then you are limited to what a printer will print - with this method there inso real limit
In stead of using Sodium bicarbonate, model-makers use fumed silica powder. It's much lighter, and desirable in model ship or aircraft making.
cheers mate nice tip
Looks like you should use your 3d printer to make those. Looks easier than the blue thinks you made.
Thank You. That was the missing piece
When making this design and trying to miniaturize it. Do they go over in their white papers that when you get below a certain size the efficiency ratio falls off.
It’s a physics friction thing with the mass of air to surface ratio.
You could take the most efficient design out there but when you miniaturize it it loses its efficiency as you get smaller.
Still works but just loses the main reason behind the design in the first place.
you might want to read the paper I showed mate
at 1950-x in USSR use that direct with water pump
I wonder if the one you are making there is more efficient, because the circles form wing end plates, while the other one does not. We'd need two models the same size to see if 'end spill' has a negative effect.
good idea - want to try it?
Wonder if it could be used in a stream of water. Just wondering. Great video Robert. Get the old brain juices churning.
oh will bet it could mate
Rather than glue the two curves together one could use heat to form both out of a single sheet when set in a mold.
oh yeah
So the Ugrinky is basically a savonius with a built-in venturi Genius.
that's a nice way of looking at it
Great video, thanks. I am new to this and I am wondering whether it is possible to use a small homemade turbine to power a 175w x 4m electric underfloor heat mat, or is that too ambitious? There is plenty of wind where I live.
You can try Lenz2 or H-Darrieus turbine with sizes D>=1.4M, H>=2D, 26" wheel from the bicycle and belt as increasing reduction gear
Interesting. Nice video. I have been wondering what would be the most efficient way of converting that mechanical energy into electricity? I see you using DC motors a lot to convert it but is there a specific size or wattage motor that's most efficient for this load? Or just slap any DC motor on it? And then from your last video, dump to a resistor inside the house for heating.
I have done a few videos explaining this mate - but I guess I should do another - I have been thinking about it