shooting at 24-30fps that was really cool, to see the blades look like they weren't even moving at times. waiting for the Darwin files to start printing. Building the generator now. Thank you as always Rob & crew!
@@ThinkingandTinkering I’m curious have you tested any toroidal propellers- What happens if instead of a propeller you create the opposite and have a reversed cone with propeller shaped grooves cut out of it more like a tesla turbine?
Me too; really keen to see how the Darwin turbine will turn out. I’m going to see if I can build a cheap 500w generator from these designs. One path I’m going down is seeing how to improve the PLAs outdoor longevity. Of course we can replace the parts easily with a reprint but ideally I don’t want things to fly off; exposing material or worse, losing magnets
the real mystery is why absolutely NO ONE sell professionally made wind turbine for the general public under 1000€ which actually work fine and are efficient. Very strange. Yours is incredible, I wish I had the time to build one myself, maybe I will some day !
One reason is volume of sales. If everyone wants one, manufacturers will compete on price and we get a consumer end benefit from that competition in price.
A gentleman in Spokane Washington his last name was Ribic (Ribic Wind and Solar) was doing counter rotating blade designs 1 blade turning the armature the other turning the magnets to double the output. He had both 3 blade designs and old prairie water pumping windmil designs he could produce fair amounts of electricity down to 3-5mph
Oh man! That's incredible, I realllllly wanna see it in the darwin now! I'm making plans to build a darwin boat one day...using a large darwin as the "mast". I really think it will work quite well. Not as well as sails as they are light and can capture wind extremely well... but it will be a fun project regardless.
Brilliant! You may need a bodyguard as youre now beginning to uncover/make headway in the technology they no doubt have and DO NOT want US to have! (Free Energy!) LITERALLY! Open source and easy to make/harness! Great work Rob keep it up! (And dont tell anyone if youre going out to eat in a restaurant & keep an eye on your car brakes!) Lol 😂🤦🏻
Rob, I don't know if you have seen it or not, but I thought you might WANT to hear about a HUGE breakthrough, in blade design. Three men, whom joined together, to form a company, after watching certain wales. They found that the bumps(carbuncles) on wale fins, produce a 20% INCREASE in efficiency, and a great increase in slicing through water and air. The next time that you make something with a blade, you may want to incorporate these carbuncles into it. Keep up the good work.
Very nice demonstration. I was thinking a dot of colour on a blade might tidy up the stationary effect and would even indicate why it seemed to stop and start, which I presume was showing when the frame rate was 1 to 1 and then 1 to 2 and 1 to 3. Not really an important part of the display, but of a little interest to those fascinated by wagon wheels.
I'm not sure that's going to be very efficient because the leeward blades are going to be crossing the dirty air off the back of the windward blades. That said, there are drones that use coaxial counter-rotating blades, so it's not a complete write-off, but a quick Google shows that the thrust generated by the lower rotor is about half that of the upper rotor. I guess it goes back to what Robert was saying in a previous video about whether you have a torquey motor, or a speedy motor. Counter-rotating blades would (I guess) be better for a motor designed for speed. Definitely worth an experiment though.
I always say what you said here, but it get more complicated and the great win is on double-layer! Now we can get out of an simple windmill enough to even live in north part of Europe!
@@EGDD-42 you can use a relatively simple differential gear system for that, another idea is to decouple the two fans and have them mounted on seperate shafts co-axially.
I'm building mine at 175%. I want mine horizontal too. Figuring out my Darwin tower. I'm in northern Arizona and blessed with incredible wind. We average between 8 and 10 miles per hour. Depending on where you look or live.
Waaooow what a gooo!!!! Thanks Rob. You are so near now to get a warlock title to you! Go out and test a broom-stick as a magic wand!!!! But if you take out generator on the a bicycle-rim around the blades and take out the electricity were? 8 times faster two blades so twice amount of possibility to make a great windmill! /Mikael PS. Now the hard questions come why not four-blades it get tuffer and easier to build! DS.
And its very efficient to chatch the last of energy from expantion! but you should also look at the stationary blades in a turbine , witch help to direct flow over turbine blades..
👍👌👏 Oh WOW, simply fantastic! Thanks a lot for making teaching explaining recording editing uploading and sharing. Best regards luck and especially health to all involved.
Very nicely done RMS. I'm looking forward to seeing your new shop powered by these and your solar panels in an off grid setup. You've put a lot of work in to your projects, let them give you some work back.
Robert call me crazy but what if you had a “hourglass Darwin” where 1/2 of it that sent wind downward, turning the blades clockwise, and then an “upward Darwin” sending the wind upwards, turning the other blades counter clockwise? Spin the serpentine coil clockwise and the magnets counter clockwise helping it overcome the torc needed and doubling the rotational speed. Maybe I could draw a picture and email it to you lol. Great work!
So glad your doing contra rotating. Most of the last post war piston fighters were using them, so they must be more effective. Offshore the infrastructure would give a huge saving . 1 mast, 1 gearbox 2x props
Would love to see you make this less modular and as compact and sturdy as you can (while still using common parts). Seems like a great design in itself and ready to be refined.
I notice that the hollow side of the blades are now facing the wind. I always figured that would be better. In this video the blades were spinning so fast I was just expecting the LEDs to get too much current and pop. haha. I guess you were lucky that the wind was not that much faster. Nice one and this is one I may also try out with slightly bigger blades for a battery backed gate motor charging setup.
Hi Rob, is it scaleable on a 3D printers slicer to fit the max size of a printer and how would I get the generator up to 48v to suit my D.I.Y LiFePO4 battery bank? Thanks very much for your hard work!
Robert, you are looking like Ben Franklin holding up a lightning rod fella. LOL Lucky for you lightning was not around so you can do this safely. Job well done fella.
Great achievement! I know you’re probably doing the Darwin arrangement first, but could (or would) you investigate on putting that blade arrangement in a propeller? I know people made counter rotating propellers to improve efficiency, but what if you build them like this generator? Would it improve the thrust? I think it would deserve a look on it… don’t you think?!?
@@paradiselost9946 yes, I am an aerospace engineer doing CFD, I understand a wind turbine slows air down, and a propellor speeds it up, but why wouldn't they be symmetric depending on if power is extracted or added. An inefficient turbine is probably an inefficient propellor. You are wrong on several points. For instance, yes, counter rotating blades do increase efficiency, ask the Russians. Yes, ducts do increase efficiency until they add more drag, and yes, number of blades matter. Number of turbine blades in a jet engine matter too
Morning, Apologies if I am teaching to suck eggs, but if a dual rotor system is used for a wind turbine then a stator section will massively increase the efficiency of the second . This is one of the purposes within the compressor stage within an axial flow compressor (as used in a jet engine). Hope this is of interest. Kindest regards Andy Walsh P.S keep up the good work
WIth dual rotors you could also set it up so that the stator and the commutator contra-rotate within each other and get much higher speeds and generate more electricity.
That looks like a game changer and I really like your idea to rotate it into a vertical wind catch (can these amplify air speed to the turbine with one of these) Can’t wait to hear the energy generated vs wind speed numbers! A wind tunnel would be handy with all the turbines you build.
Do you know if it was really 1500 rpm? Since there are three blades, couldn't it look like it's standing still with a one third rotation? If that's the case, I would think you'd need to divide by three and it would be more like 500 rpm. But it very well could have been 1500 because 1000 and 1500 would also both still look like they were standing still.
30 volts at 100mA is 3W. The diameter looks like it's about 0.5m, so say 0.2m2 area and 3.3 m/s wind speed. The power in the wind is 0.5 x mass x velocity^2 = 0.5 x swept area x air density x velocity^3 So at 3.4m/s the power in watts is 0.5 x 0.2 x 1.23 x 3.4^3 = 4.8W So the efficiency does look pretty good, something like 62% assuming the wind speed was correct. Ideally the anemometer should have been raised on a parallel broomstick, as power is proportional to the cube of the windspeed. But that's pretty good. I'm playing with designs for wind turbines on a pitched roof ridge, to benefit from the compression effect of the wind over the pitched roof, using variants of shrouded Savonius and Darius turbines on their side.
It's the reverse application, but the newly licenced Air One EVTOL piloted quadcopter (two-seater I believe) uses four incredibly similar twin rotors. (Except I'm not sure their blade assemblies are evenly offset from one another.)
With three-blade turbines the 'stationary blade' effect would appear at 1/3, and 2/3 of actual RPM as well as full-speed. I notice that in the studio there seemed to be a piece of tape on the boss, and I wondered if this was what you actually used to check speed? Another great video, thanks.
You may get a complaint from that wind farm for extracting some of their wind energy.....best if your keep a low profile for a while until it all blows over.😁
Well now a promising design. Thinking I might build a spitfire weather vane , charge small battery put running lights on plane and led spot for night time viewing, my that a lot of work, distance between blades and pitch might be a problem ? Maybe a Wright flyer with belts driving a common shaft ..lol
I would love to know what the relative output could be for some low power real usage. for example a car trickle charger is 12V at about 1.5A Could I install a home made turbine for Garden lights, car storage, pond pump etc....
Was thinking partway through the video it would perform great in your Darwin housing, and intended to mention it... Seems that was the plan though from the get-go, and I am really looking forward to what it ends up like. Honestly, the dream is to get an acre of land and just put a ton of either solar panels on it or wind turbines. Maybe make it a passive sort of income, if I can find an electric company that will truly pay me for excess power generated.
So, this extracts more energy from the wind. I am struggling to think whether the reverse is true for a drone. Would this be more efficient, generating more thrust for a given power input vs regular propellers. Would be great if so, and you don't need contra- rotating shafts
I wonder if cardboard with graphene doped wood glue (and pressing it) could be used to make gears and other parts by those that don't have 3d printers or even proper tools to make it out of real wood or metal The casein based bioplastic also seems like another alternative, specially for manufacturing multiple parts, but then, what would be the best approach to molding it into shape?(diy metal "cookie cutters", maybe?)
The next thing I would do if that were my project and I'm not telling you what to do I promise you but I would go to heavier magnets finger coils more turns because it was moving so free and so fast that I don't think bigger magnets coils and maybe even iron cores would harm the action too much. It's always handy to get the amperage up as high as possible. High being in the 500 ml to 1 watt range
I think saying exactly 60 degrees is an unwarranted assumption as the gain in efficiency comes from the rear set avoiding the turbulent air from the front set. To me that would imply that the angular offset should depend on the windspeed and/or the rotational speed of the blades.
As usual just typing my observations led me to two additional thoughts. 1. Using a differential gearbox with the generators rotor attached to the body and each blade set attached to what would be the axles would allow the offset to set itself. 2. Using counter-rotating blade sets (with appropriate gears to achieve that) might produce a compromise efficiency gain.
you sort of get the idea of a jet turbine. i wonder what will happen if you put 3 or 4 in a row in the darwin turbine and also make use of the venturi effect to speed the air up even more.
I will try to print that, i will try to make the blades bigger, kind of split them and glue them because of the size of the 3d printer. Wish that will give at least 200wats with 8m/s
It would be interesting to understand how efficient your dual rotor in a Darwin Wind Turbine would be compared to an Archimedes Liam F1 MINI Urban Wind Turbine? Basically, what the best to replace my wood burner with a wind turbine on top of my chimney 🤷🏼 Might need battery storage too.
hey Robert, As of now im 90 percent done of building one of those, i was wondering if i needed a rectifier before the mppt wind charger because theres only 2 wires coming out of that generator.Would that mean that its a one phase generator, sorry dont know much about electricity and phases. Thanks you for your knowledge even though sometimes gotta listen to you video a couple of time to figure it out.
Could u inform the pitch angle (tilt towards Y axis) used for mounting the blades in the hub? I've made mine at 248% scale and works like a charm, but i don't know the optimal pitch angle for extracting the most power of it.
I have been thinking you could make the blades longer by printing them in two half's, then then hold them together with a carbon spar in the center of the blade.
shooting at 24-30fps that was really cool, to see the blades look like they weren't even moving at times. waiting for the Darwin files to start printing. Building the generator now. Thank you as always Rob & crew!
cheers mate
@@ThinkingandTinkering I’m curious have you tested any toroidal propellers- What happens if instead of a propeller you create the opposite and have a reversed cone with propeller shaped grooves cut out of it more like a tesla turbine?
It would probably need a cowl but I’d be very interested in seeing what happens
Me too; really keen to see how the Darwin turbine will turn out. I’m going to see if I can build a cheap 500w generator from these designs.
One path I’m going down is seeing how to improve the PLAs outdoor longevity.
Of course we can replace the parts easily with a reprint but ideally I don’t want things to fly off; exposing material or worse, losing magnets
How can you tell whether it's rotating a whole turn per frame or n/3?
the real mystery is why absolutely NO ONE sell professionally made wind turbine for the general public under 1000€ which actually work fine and are efficient. Very strange.
Yours is incredible, I wish I had the time to build one myself, maybe I will some day !
One reason is volume of sales. If everyone wants one, manufacturers will compete on price and we get a consumer end benefit from that competition in price.
A gentleman in Spokane Washington his last name was Ribic (Ribic Wind and Solar) was doing counter rotating blade designs 1 blade turning the armature the other turning the magnets to double the output.
He had both 3 blade designs and old prairie water pumping windmil designs he could produce fair amounts of electricity down to 3-5mph
There are wind turbines available for boats under that price. I've seen them for less than £500 UK.
@@paradiselost9946 what's your machine then, you missed that bit
@@paradiselost9946 so you've nothing constructive to add except 3 youtube "shorts" where you're also rambling like a meth head, cool, now shut up.
Oh man! That's incredible, I realllllly wanna see it in the darwin now! I'm making plans to build a darwin boat one day...using a large darwin as the "mast". I really think it will work quite well. Not as well as sails as they are light and can capture wind extremely well... but it will be a fun project regardless.
You and me both!
Waiting for this to land . Thanks as always amazing work
Thank you too!
@@ThinkingandTinkering I printed the blades, hub and magnet holder, none of it fits together.
Love when things from the bench still work outside!
Come on Rob let's go for the implementation in a Darwin wind turbine!! Very very good video by the way. Thank you
it's on my mind!
Would love to see this soon
lol the rolling shutter effect on that propeller changing speed looks incredibly cool 😆
I like the "beefy-ness" of it .. looks strong but not too large!
What would be the point? It just about powers a few LED’s
You would think something like that could at least power something substantial.
Brilliant! You may need a bodyguard as youre now beginning to uncover/make headway in the technology they no doubt have and DO NOT want US to have! (Free Energy!) LITERALLY! Open source and easy to make/harness!
Great work Rob keep it up! (And dont tell anyone if youre going out to eat in a restaurant & keep an eye on your car brakes!) Lol 😂🤦🏻
cheers mate
Nah, the technologies that get your fellows triggered are other ones. You can't even mention those.
Hi, everyone ! New to the channel! Aprox how many watts do u get off this wind turbine. Thanks
Another daily dose of awesomeness! Thanks Robert 👍
Awesome as always, Rob. Can’t wait for final concept!
cheers mate
Rob, I don't know if you have seen it or not, but I thought you might WANT to hear about a HUGE breakthrough, in blade design. Three men, whom joined together, to form a company, after watching certain wales. They found that the bumps(carbuncles) on wale fins, produce a 20% INCREASE in efficiency, and a great increase in slicing through water and air. The next time that you make something with a blade, you may want to incorporate these carbuncles into it. Keep up the good work.
Absolutely awesome, love the improvements. Thank you for the upload Robert!
Very nice demonstration. I was thinking a dot of colour on a blade might tidy up the stationary effect and would even indicate why it seemed to stop and start, which I presume was showing when the frame rate was 1 to 1 and then 1 to 2 and 1 to 3. Not really an important part of the display, but of a little interest to those fascinated by wagon wheels.
There is also a way of painting black and white on a circle that when it spins shows colored rings. Not sure if this would work on blades though.
Love that your back on the wind turbines again. Can’t wait to see the full Darwin style operational and charging one of your batteries.
you need two sets of blades spinning in opposite directions, and one is connected to the rotor and the other to the stator, to double the velocity.
I'm not sure that's going to be very efficient because the leeward blades are going to be crossing the dirty air off the back of the windward blades. That said, there are drones that use coaxial counter-rotating blades, so it's not a complete write-off, but a quick Google shows that the thrust generated by the lower rotor is about half that of the upper rotor. I guess it goes back to what Robert was saying in a previous video about whether you have a torquey motor, or a speedy motor. Counter-rotating blades would (I guess) be better for a motor designed for speed. Definitely worth an experiment though.
A contra rotating system? You get more thrust in contra-rotating aircraft, but the gear arrangement is an engineer's nightmare
I always say what you said here, but it get more complicated and the great win is on double-layer! Now we can get out of an simple windmill enough to even live in north part of Europe!
no - that won't work
@@EGDD-42 you can use a relatively simple differential gear system for that, another idea is to decouple the two fans and have them mounted on seperate shafts co-axially.
Another inspirational and elegant design demonstrating real world solutions to energy capture. Marvelous stuff.
Great stuff Rob, well done, I think that is such a great wind turbine design 👍
I'm building mine at 175%. I want mine horizontal too. Figuring out my Darwin tower. I'm in northern Arizona and blessed with incredible wind. We average between 8 and 10 miles per hour. Depending on where you look or live.
Im bulding mine at 124%, because its the maximum width that my 3d printer can print (300mm)...let's see the output that I can get
Give us an update
Impressive.
I was just wondering yesterday why wind turbines don't have a second set of blades at the back, and now I know they sometimes do.
This design is very exciting. I am looking forward to how it performs in the Darwin configuration for sure!
I love your show!!! Thanks for all the ideas! This one’s going to help change the world! Love the air engine of 2030 also!
i am loving this series, thank you. this is on my list of projects now .. awesome videos.
Love that you filmed the 'real world' test in front of a windfarm! Now looking forward to the bench test...
that was AWESOME!!! Too bad we don't have a constant wind near me :/ Hence why I'm interested in a bicycle setup :)
Waaooow what a gooo!!!! Thanks Rob. You are so near now to get a warlock title to you! Go out and test a broom-stick as a magic wand!!!! But if you take out generator on the a bicycle-rim around the blades and take out the electricity were? 8 times faster two blades so twice amount of possibility to make a great windmill! /Mikael PS. Now the hard questions come why not four-blades it get tuffer and easier to build! DS.
It’s been great fun seeing you evolve this concept. Now I can’t wait to see the Darwin version.
Me too! lol
If you put this in a funnel, you got a Low Pressure steam turbine as meintion in previous comment @@ThinkingandTinkering
And its very efficient to chatch the last of energy from expantion!
but you should also look at the stationary blades in a turbine , witch help to direct flow over turbine blades..
(LP stage means seccond stage or third stage of a HP steam turbine)
👍👌👏 Oh WOW, simply fantastic! Thanks a lot for making teaching explaining recording editing uploading and sharing.
Best regards luck and especially health to all involved.
Very nicely done RMS. I'm looking forward to seeing your new shop powered by these and your solar panels in an off grid setup. You've put a lot of work in to your projects, let them give you some work back.
Robert call me crazy but what if you had a “hourglass Darwin” where 1/2 of it that sent wind downward, turning the blades clockwise, and then an “upward Darwin” sending the wind upwards, turning the other blades counter clockwise? Spin the serpentine coil clockwise and the magnets counter clockwise helping it overcome the torc needed and doubling the rotational speed. Maybe I could draw a picture and email it to you lol. Great work!
I love turbines like this, I've always liked the dual rotor blade design for some reason.
Loving this series. ❤
This will be my first project on my new 3D printer.
Love your enthusiasm. Thanks for sharing.
So glad your doing contra rotating.
Most of the last post war piston fighters were using them, so they must be more effective. Offshore the infrastructure would give a huge saving . 1 mast, 1 gearbox 2x props
But this isnt contra rotating, just 1 shaft
@@TheSorters you get the point. More blades more power. It doesn't need to be contra rotation since its behind the motor and torque isnt a issue.
Always a treat! Thanks for constantly sharing.
Once again absolutely incredible results. Well done on the tinkering mate.
Would love to see you make this less modular and as compact and sturdy as you can (while still using common parts). Seems like a great design in itself and ready to be refined.
The frame rate strobing will also help determine the rpm.
I notice that the hollow side of the blades are now facing the wind. I always figured that would be better. In this video the blades were spinning so fast I was just expecting the LEDs to get too much current and pop. haha. I guess you were lucky that the wind was not that much faster. Nice one and this is one I may also try out with slightly bigger blades for a battery backed gate motor charging setup.
I like that it is so simple and quiet.
Hi Rob, is it scaleable on a 3D printers slicer to fit the max size of a printer and how would I get the generator up to 48v to suit my D.I.Y LiFePO4 battery bank?
Thanks very much for your hard work!
Thank you robert for making us feel like we could be our own Tony Stark.
KNOWLEDGE IS POWER
Robert, you are looking like Ben Franklin holding up a lightning rod fella. LOL Lucky for you lightning was not around so you can do this safely. Job well done fella.
Great achievement! I know you’re probably doing the Darwin arrangement first, but could (or would) you investigate on putting that blade arrangement in a propeller? I know people made counter rotating propellers to improve efficiency, but what if you build them like this generator? Would it improve the thrust? I think it would deserve a look on it… don’t you think?!?
I thought the same thing. Does more watts per a given wind speed equal more thrust for a given input power. Is this a symmetrical problem?
@@paradiselost9946 yes, I am an aerospace engineer doing CFD, I understand a wind turbine slows air down, and a propellor speeds it up, but why wouldn't they be symmetric depending on if power is extracted or added. An inefficient turbine is probably an inefficient propellor. You are wrong on several points. For instance, yes, counter rotating blades do increase efficiency, ask the Russians. Yes, ducts do increase efficiency until they add more drag, and yes, number of blades matter. Number of turbine blades in a jet engine matter too
Morning,
Apologies if I am teaching to suck eggs, but if a dual rotor system is used for a wind turbine then a stator section will massively increase the efficiency of the second . This is one of the purposes within the compressor stage within an axial flow compressor (as used in a jet engine).
Hope this is of interest.
Kindest regards
Andy Walsh
P.S keep up the good work
WIth dual rotors you could also set it up so that the stator and the commutator contra-rotate within each other and get much higher speeds and generate more electricity.
That looks like a game changer and I really like your idea to rotate it into a vertical wind catch (can these amplify air speed to the turbine with one of these) Can’t wait to hear the energy generated vs wind speed numbers! A wind tunnel would be handy with all the turbines you build.
Excited to see the double prop test
cool
❤❤❤❤ beautiful thank youbdo much what a very instructive video more of this will do ❤❤❤ God bless for sharing your knowledge
The apparent stationary blades in this video, reminds me of old Western movies, in which wagon wheels appeared to turn backwards or be stationary.
Do you know if it was really 1500 rpm? Since there are three blades, couldn't it look like it's standing still with a one third rotation? If that's the case, I would think you'd need to divide by three and it would be more like 500 rpm. But it very well could have been 1500 because 1000 and 1500 would also both still look like they were standing still.
Squirrel cage collectors came to mind immediately. If offset blades improved power so much, I wonder if nested cages would have similar effect.
30 volts at 100mA is 3W. The diameter looks like it's about 0.5m, so say 0.2m2 area and 3.3 m/s wind speed.
The power in the wind is 0.5 x mass x velocity^2 = 0.5 x swept area x air density x velocity^3
So at 3.4m/s the power in watts is 0.5 x 0.2 x 1.23 x 3.4^3 = 4.8W
So the efficiency does look pretty good, something like 62% assuming the wind speed was correct. Ideally the anemometer should have been raised on a parallel broomstick, as power is proportional to the cube of the windspeed.
But that's pretty good. I'm playing with designs for wind turbines on a pitched roof ridge, to benefit from the compression effect of the wind over the pitched roof, using variants of shrouded Savonius and Darius turbines on their side.
It's the reverse application, but the newly licenced Air One EVTOL piloted quadcopter (two-seater I believe) uses four incredibly similar twin rotors. (Except I'm not sure their blade assemblies are evenly offset from one another.)
I think having four of them, n.s.e.w. would be better than a swivel. Thx for this video.
definitely a fan of the darwin setup...you've got me curious.
With three-blade turbines the 'stationary blade' effect would appear at 1/3, and 2/3 of actual RPM as well as full-speed.
I notice that in the studio there seemed to be a piece of tape on the boss, and I wondered if this was what you actually used to check speed?
Another great video, thanks.
You may get a complaint from that wind farm for extracting some of their wind energy.....best if your keep a low profile for a while until it all blows over.😁
Well now a promising design. Thinking I might build a spitfire weather vane , charge small battery put running lights on plane and led spot for night time viewing, my that a lot of work, distance between blades and pitch might be a problem ? Maybe a Wright flyer with belts driving a common shaft ..lol
I say, old chap, what a, DELIGHTFUL, drink mixer! - cocktails anyone? - Reginald, fetch the ingredients! Post haste!
I would love to know what the relative output could be for some low power real usage. for example a car trickle charger is 12V at about 1.5A
Could I install a home made turbine for Garden lights, car storage, pond pump etc....
fantastic ! I am looking forward to you putting a decent electrical load on it...
Can’t wait for the Darwin experiment :) Thanks Robert and Team
Awesome blade runner!
nice!
Love your Videos !! One day I want to grow up to be like you my friend !!
lol - awesome - thank you mate
You can grow up or you can be like Rob you can't do both.
Rob's secret is out! Who else but a Good WIZARD could build all these cool awesome projects! 👍😂😂😂
Great demo! Curious what the results would be in a Darwin collector, having one axle from bottom to top and a rotor on every level..
Was thinking partway through the video it would perform great in your Darwin housing, and intended to mention it... Seems that was the plan though from the get-go, and I am really looking forward to what it ends up like. Honestly, the dream is to get an acre of land and just put a ton of either solar panels on it or wind turbines. Maybe make it a passive sort of income, if I can find an electric company that will truly pay me for excess power generated.
Can’t wait to see the next episode!😊
Loving the Videos, How about using two Toroidal fan blades instead? Love to see the difference between efficiency and out put.
A capacitor and diodes would smooth out the blinking .. but what a great design..
Beautiful, just beautiful
Thank you very much!
So, this extracts more energy from the wind. I am struggling to think whether the reverse is true for a drone. Would this be more efficient, generating more thrust for a given power input vs regular propellers. Would be great if so, and you don't need contra- rotating shafts
❤Maui ❤
Works really well....and so simple!
I wonder if cardboard with graphene doped wood glue (and pressing it) could be used to make gears and other parts by those that don't have 3d printers or even proper tools to make it out of real wood or metal
The casein based bioplastic also seems like another alternative, specially for manufacturing multiple parts, but then, what would be the best approach to molding it into shape?(diy metal "cookie cutters", maybe?)
The next thing I would do if that were my project and I'm not telling you what to do I promise you but I would go to heavier magnets finger coils more turns because it was moving so free and so fast that I don't think bigger magnets coils and maybe even iron cores would harm the action too much. It's always handy to get the amperage up as high as possible. High being in the 500 ml to 1 watt range
Thanks! The darwin turbine + dual rotor +more moving blades+not movable blades= like to a reaction steam turbine...
amazing, can't wait for the Darwin version of this
me too! lol
How big a darwin collector could you put over that turbine to get an airflow over 360⁰ of the fan blades ?
Fantastic job Gentlemen!
I think saying exactly 60 degrees is an unwarranted assumption as the gain in efficiency comes from the rear set avoiding the turbulent air from the front set.
To me that would imply that the angular offset should depend on the windspeed and/or the rotational speed of the blades.
As usual just typing my observations led me to two additional thoughts.
1. Using a differential gearbox with the generators rotor attached to the body and each blade set attached to what would be the axles would allow the offset to set itself.
2. Using counter-rotating blade sets (with appropriate gears to achieve that) might produce a compromise efficiency gain.
Some smoothing caps and you're all set!
for sure
bloody marvellous
Very nicely done 👍
You absolutely need pure iron plates on both disks with magnets. It will dramatically improve magnetic field through coils.
It'll create cogging, which will basically act like friction to turn the blades
no you don't
They should manufacture windmill blades out of solar panels to get a little extra juice.
Great video - show us a water-cooled spark gap, Robert!
you sort of get the idea of a jet turbine. i wonder what will happen if you put 3 or 4 in a row in the darwin turbine and also make use of the venturi effect to speed the air up even more.
Really great rotation. But i wonder why the power output is so small.
I agree you should replace the back nose with the tail.
cheers mate
You are awesome as always.
Great video!! this is by far the best wind turbine i ever seen..
Would there be a way to electronically limit the speed in case of overspeed conditions or would you use something like a friction brake?
i would use a friction brake
I will try to print that, i will try to make the blades bigger, kind of split them and glue them because of the size of the 3d printer. Wish that will give at least 200wats with 8m/s
It would be interesting to understand how efficient your dual rotor in a Darwin Wind Turbine would be compared to an Archimedes Liam F1 MINI Urban Wind Turbine?
Basically, what the best to replace my wood burner with a wind turbine on top of my chimney 🤷🏼
Might need battery storage too.
hey Robert, As of now im 90 percent done of building one of those, i was wondering if i needed a rectifier before the mppt wind charger because theres only 2 wires coming out of that generator.Would that mean that its a one phase generator, sorry dont know much about electricity and phases. Thanks you for your knowledge even though sometimes gotta listen to you video a couple of time to figure it out.
Looks like wind generation may be getting to the stage of being useful rather than just a money pit.
Could u inform the pitch angle (tilt towards Y axis) used for mounting the blades in the hub? I've made mine at 248% scale and works like a charm, but i don't know the optimal pitch angle for extracting the most power of it.
I have been thinking you could make the blades longer by printing them in two half's, then then hold them together with a carbon spar in the center of the blade.
For the Darwin model I would put a second anchor point opposite the one where the broom handle went so it keeps it in registration.
you are best off with three anchor points set 120 degrees apart i would think
@@ThinkingandTinkering agreed, though two is still better that one mate lol :)
lol - absolutely mate
Making it 3 times larger may actually make it usable It may even produce 30 watts
Yes....stack those blades and catch that wind. What if you had some gearing to increase the RPM's? Would you sacrifice in torque?