1748 3D Printing - The Future Of Vertical Wind Turbines? The Elegoo Neptune 3D FLM Printer
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- เผยแพร่เมื่อ 14 พ.ย. 2022
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That is the single most interesting vertical turbine design I've seen in a very long time, like 1975.😳
I'm croaking to see how it performs and love the low cost 3D printer idea.
Absolutely brilliant!!
I agree it's fascinating
Imagine a Lasko tower fan,
like the blue one he has lying on the table, just the fan blade.
Imagine replacing it with one of these, same diameter & height,
putting int back in the fan....not for generating power, but just see the diff?
@@zodsinclair8500 Absolutely.
Hold my beer while I prepare a prototype to show you something different!
VAWTS are about to become huge.
Its almost impossible to put a large HAWTs on top of a tall buildings like you get in the CBDs of many cities because of the loads on the roof. But the tops of those building are up out of the ground clutter where the wind is almost constant 24/7. There's too much emphasis been put on performance instead of practicality.
The other place these will take off when enough people work it out are in places where people already have solar and they are near to large water bodies that create a sea breeze. Most sea breezes start in the late afternoon after the ground has spent the day heating up. So at the time solar power is diminishing while at the same time wind is picking up and will usually last until the morning when the sun comes out. So a VAWT that's built to output power like a solar panel plugs straight into the existing solar inverter.There are some starting to come out but they are expensive.
Even if it's a terrible wind turbine, it's a striking piece of art.
I agree mate lol
Looking forward to the results. Thanks again for all your hard work.
cheers mate
Love your unbiased enthusiasm.
It could work, it might not work, but you do it anyways.
Thanks mate.
Oh boy have you gotten into a rabbit hole. 3d printing is my favorite hobby by far, and a great thing to combine with the sort of projects you make!
It shows how good of a service you do for us, your audience. Well done sir 🏆👏🏻
cheers mate
Good to see you Robert. Will never tire of your child-like enthusiasm.
Love the 3d design of this, looking forward to seeing it spin up, it's quite a complex shape. Printer looks good for that price range, great demo to print real useable parts.
cheers mate
Hey Rob, if a rougher surface finish is desired, check out the fuzzy skin setting in cura. And for faster, stronger prints check out lostintech, he's done a number of videos on what he calls extreme vase mode that might be perfect for printing turbines faster.
will do mate cheers
Awesome, Thanks Robert!!
Wow. I'll have a look into that printer. Well done Elegoo!
That rotor is a beauty that you have there, that actually reminds me of one of the rotors on my supercharger, of course, with much more interest, as not all lines on that big blue rotor of yours exist on a simple Mandane super charger...
We worked on a number of 3-D printers like yours, that form seem to be pretty robust, I have a smaller one that's made of extruded, robotic, aluminum tinker toy bits, it has a couple of different attachments for it, one is a blue, cutting laser, and the other is a small attempt at a spindle head. I was never very much happy with mine as my 3-D printed bits were error ridden, I should've probably made the bits and pieces on a milling machine instead of 3-D printing it, but that's what I did then in 2017.
Thank you Robert for all your content, viewing your stuff is always time well spent.
By the way:
This is "Off grid power guy" that advertises before your TH-cam videos will start to play is something else... seems a bit Trollish.
cheers mate I am afraid I have no say whatsoever on what adds youtube put up - having said that I am glad you like the vids and the stuff I try to share - cheers again
It look beautiful! keep up the good work Rob! You are an inspiring U-tuber! 🥸
oh wow - cheers mate
Love it, that looks amazing, looking forward to you hooking it up. You got a new subscriber thanks to your friendly happy style.
oh wow - awesome - cheers mate
This is exactly why i love printing. Being able to test out cool ideas is so much fun. Just wish i could jump cut edit real life and make my prints show up that fast
oh yeah - this took days lol
Thank you looking forward to the finished article se how it performs..........Watching your channel has made me realise how much I miss science class.......
When you build your wind wall, it's a great moment to contrast the performance of two different turbines. I'd sugest adding top and bottom end caps to one turbine as they've been shown in similar turbines to help improve the performance.
cheers mate
I watched your last video and thought about doing something similar. But I don't have a 3d printer yet. Knowing this saves me time trying to find it. Thanks a lot!
Glad I could help!
I have been using wind power since the mid 1990s I eagerly await the development of your windwall and the report of its performance. Thank you for all the smiles
cheers mate
love your work!
I have made many of these already and they are truly mesmerizing to watch spinning in the wind and they go really fast. Not sure how they will perform attached to a generator tho but give em a try..
it's worth it mate
Work of art!
That looks stunning. I'm sure it will work awesome
Robert, I absolutely love your videos. Keep up the fascinating work. There are a series of books out called "How Things Work", we had bought some for our children years ago and they loved them. With all your vast knowledge and seemingly endless videos I think it would be wonderful if you produced something similar for using your unique wit and charm... Just a thought. Also, if you have knowledge in book form, even if the grid is taken down by a cme from the sun or some other disaster, people can still have the books to fall back on. God bless you.
The printer certainly does a great job cant wait to see what sort of results you get from it in a wind, interesting stuff power generation especially now with the electricity prices going up so much. If you could make enough power to charge that power station you looked at a few videos back think of the application and the money you could save. Keep up the great work.
I agree mate - to my mind it is always going to be a bit of a strategy to deal with power at home - reduce, heat inn way, electricity in one or two ways
It looks beautiful. I hope it performs as well as it looks
me too
That is very nice Robert .. love the design .. very interesting!! 🙂
Thank you! Cheers!
This is awesome, Rob! Hope to see the wind wall soon
tomorrow's vid mate
It is a beautiful thing. Even if it doesn't work, it would make a nice mobile to stick in your garden. Looks a bit like a flame, especially one in a vortex. I wonder if that was the motivation for the design - go with the flow kind of thing.
Love your "Lady of the Night" joke. The late, great Terry Pratchett referred to "Ladies of Negotiable Affection" :)
Thanks for another terrific episode.
ladies of negotiable affection - love that lol - and yeah even if it is pants it looks great
Yes! Finally, the Ugrinsky rotor! I've been waiting for this one!
lol - well there you go!
Wow are you getting better it seem so, can’t wait to see you put this in play and generate power.
tomorrow's vid mate
@@ThinkingandTinkering thanks won’t sleep now.
Simply Brilliant and so very wonderful that you were provided this New Model by it's Manufacturer to produce components that need to be 3D Printed!
At that price, I believe many people will be considering buying that Printer for Christmas or Bdays In the near Future!
It's enjoyable seeing your excitement in being able to produce such complex designs by such unique new methods. You have that enthusiasm as a Child receiving the most exceptional Christmas Gift! Haha.
Truly something to see that there are still experiences in Life that can bring back such youthful Enjoyment, no matter our Age!
Great show!
I think it may an awesome Xmas present for someone
@@ThinkingandTinkering You are absolutely Right!
Vawt for the win in my turbulent region. Thanks for sharing
Within most wind turbine designs there is a flutter sound when the wind passes by it and threw it, but you have come up with a design that should minimize the fluttering sound.
Bravo Bob.. YOU DID IT ! ... . I came up with this design, a long time ago but could never do anything with it.
Encore, my friend. You the man. .
I would love to see this thing in action and course, to hear it. I know you can help us with this marvelous invention. . Let's listen to it, In a windy environment, If you please.
Sorry to break it to you, but this man did not invent that type of turbine wing. He found it online.
Not sure where my comment went but awesome video Robert. Years ago I printed many 18 blade shrouded propeller turbines and they were awesome! I scaled them up to 8" diameter (200mm) and made a fencetop generator featuring 10 of them on 6vdc motor generators. It was a fun project, I came here to mention that awesome design can be found free on a 3d printingwebsite called *thingiverse* and I would love to see you or your viewers testing them out. I also tested them on the front of my car up to 120mph and they performed flawlessly and impressively for generating current that way as well.
I will check it out mate - cheers
Really interesting, thanks.
Looks good i cant wait for the follow up video. i am beginning to see that getting a 3D printer is a must for staying prepared for anything that is coming up or just a bit of fun. in this world' it is changing who knows whats coming or who?
3d printing has come a long way mate
another winning idea, Rob.... great to watch video. I was thinking.... that, instead of having each section follow the curve upwards, to have each section either at 45* or 90* angle to the section below. That way the wind is dispersed faster - rather than following the channel upwards. Just a thought - not tested.
it's a good thought mate and I was thinking about it after all in the original patent they sections are shown as staggered like you suggest
The VAWT's are my favourite too. I particularly like the helical kind. They look like a moving piece of art.
I agree
Thanks for showing this. That print looks really good from here. How long did it take per section? I'd be interested to see each type of VAWT you have done in a side by side in the wall so you could get live efficiency gains/loses of the different turbines. Great videos! Love that you have gone from fire to wind what's next water?🤣
it took about a day each piece and yep you got me - water is next lol
great stuff, thanks a million
Glad you liked it!
I'm liking this. Still thinking about my 6'x6' pool fence panels. Waiting on you. Lol!
lol
That is beautiful Rob! Can't wait to see how well it performs. This kind of thing is probably the biggest reason I would like to have a 3d printer. I just don't know if I would use it enough to make it worth it. Then again I didn't think I would use raised garden beds enough to make it worth it and now we eat out of them all season long, so I might have to rethink it and get a 3d printer. Thanks for the video, I really do love the design and am truly looking forward to seeing it's performance!
at 200£ ish for the printer it wouldn't be long before you save hundreds compared to the cost of buying just blades on the market and good luck trying too find those blades
@@willt9234 Yes, that is assuming though that I would be buying commercial blades. There are many other ways to make wind turbines than 3d printing them. I could just outright make a vawt out of pipes or barrels ect. So with that in mind buying a 3d printer is more expensive than making a turbine outright from scrap when the scrap is free. I would just be out time and effort to build my own in a way other than printing them. So don't think in only extremes like buy the machine to print it or buy the parts. In order to really think this or any other project through, you must be as open minded as possible. Your opinion is valid though, everyone has their own opinions. Mine may be different than yours, it doesn't make it any less valid for me. I appreciate your opinion and thank you for it, though what works for you may not work for me. That is one of the reasons I love Rob's videos. He more often than not approaches a project from more than one angle. Thank you for your comment. I appreciate a difference in opinions, just please do not give the appearance of talking down to another person and you will find it is better received. Thanks again!
3d printing is turning into a useful tool mate - for quite a while it was really a bit of a toy - but now they are getting o a stage they are more worth it
@@ThinkingandTinkering Yeah, it's getting more and more tempting. Thanks Rob!
@@jamesross1003 my point was getting those blades on the market and good luck building them out of scrap i cant wait to see your effort i wasn't talking down to anyone just stating facts that to buy any commercial blades of quality or try to build this kind of blade would be more hassle and time than 200£ would afford i run both vawt and horizontal with my solar off grd wiith zero mains)and have for 20+years so i know the difference between scrap lash ups and something that has been machined to do a specific job of course make and break as that is the way to learn how things work but as ive found usually when something is designed too work it usually does and keeps running without the need for constant adjustment or repair farmers best is the saying i used to go by trying better now after all these years
Great vid. Thanks Robert. Been wanting one forever. Now I know what santas bring me for Christmas.
lol - you are going to have an awesome Xmas day! - dead easy to set up too - took me all of 30 mins
@@ThinkingandTinkering OH I also loved the wind turbine too. Been pondering a underwater bubble turbine system. You always inspire me. Again Great video.
That is a very elegant design. Quite organic looking. I really hope it's function lives up to its looks.
When you do your test rig, are you going to put a column of each rotor design in the wall and test them simultaneously?
I will build a small one and test that
I little tip to make the pieces sturdier. Use a soldering iron to smooth out the transition lines. The links will be much stronger and you don't need glue to piece them together..
To a tree, lamppost, flagpole: add 2 horizontal bars at a required distance. mount the generator on the top bar and connect the modular VAWT system in-between. Generator at top to reduce drag and adjustable horizontal bars to add more vawts in a modular system. Wind wall or wind pole.... the infreasctucture for any small town or city is already there... how many roadside light fixtures are there connected tro a grid? Alot in my opinion.... Great Content again Robert Thank you.
there was an auto body repair shop here locally (jacksonville florida) who had several 4 sail vawt's along the highway to augment their power. They were only in business a few years and the vawts came down but Ive always thought the local power company was missing out on another clean power source. There are also numerous rivers that could power turbines and of course the sun is pretty prevalent here
I agree - there is a plan to put VAWTS all along the highways
I can't wait, and am going to stock up on filament.
awesome
brilliant video again
cheers mate
I really like this double helix stackable unit. I look forward to see what comes out of this idea. Pull a rabbit out of the hat fella for sure.
cheers mate
Hello good morning, first of all I want to tell you that I really like your content, I learn a lot by watching!! I wanted to ask you a question. What kind of filament material do I use for the elaboration? I am making a micro wind turbine and the conditions in my city are somewhat extreme, the idea is that the turbine stays in the environment every day and I want it to be able to withstand the environmental conditions. I'm sending you greetings from Mexico 🇲🇽
First time watching as a subscriber. Good.
awesome mate - cheers
I think the whole printer ethos is brilliant!
Can't wait until they build one that can extrude rather than just print.
they do them for chocolate, clay and concrete
@@ThinkingandTinkering Chocolate? What kind of witchery is this? ... Now I know what is on my Christmas list!
I think I will be buying that 3D printer when it comes out.
Can't wait to see the results😁😁
cheers mate
One minor point -- The raised-ridges from the 3D print would work precisely the opposite of the physics involved in the reduced-drag on golf-balls, or the causal net effect of more rotations.
well color U mr. smarts! aren't U just dripping with smarts and common sense!! real nice!! I've gota try this!! good luck!
Beautiful 😍
cheers mate
Hell yeah!!!! Parts, gears, etc, oh negative wax modles that you do with a kiln and metals
Its great to see 3d printers getting down near the 100$ range, look into upgrades, a higher grade nozzle (high speed steel) a full hot end that reaches higher temps etc.
Oh this is something I'm definitely going to have to print!
I'm also a very big fan of wind turbines and more specifically VAWT :P I've already print the ultimaker VAWT from their website, the only this is, is I need a proper place to test is and work out how or what motor to put in it for the generator.... I now have a Bambu Lab X-1 Carbon which is insanely fast and has impeccable print quality even at speed.
If there is a way to contact you I can send you what I've done already, I remember last time we talked on here it was about using a particular fan that took air in from the centre and threw out the used air out the sides.... and I was going to try and sort one of those from old filament spools and modify them...
Anyways great video and can't wait to get onto printing this myself too :D
Get it done Rob.Can,t wait.
today lol
I like VAWT too - they are the future of domestic wind production because they're not beholden to perfect wind conditions. They're wind scavengers and likely yield more KWh across the year (I hope we can incorporate them in housing design, along with a 4-ton sand battery) - the new 'chimney'.
I absolutely agree with what you are saying here mate
I like it! Not sure if you can make a mold to mass produce?
Secondly, when you find the design you like best if not this one, here is a nice idea for improving it!
Let me first discuss an issue then solve it.
Issue is if you connect a bunch of them on a shaft, if one turbine goes to fast it can be slowed due to the other fans going slower. HOWEVER, solution, similar to gearing for auto wheels on a turn, if the shaft only turns if blade goes 1. In one direction, 2. Or blade goes faster than current shaft speed. Meaning make the blade so it only turns one direction and will release of the blade goes faster as to not slow the shaft down.
In other words, the blades can only effect the speed of the shaft IF and only if it's going as fast or faster than the shaft like a check valve goes only one way to prevent one slower blade from reducing the faster spinning blade or blades. This will maximize shaft speed and you can hook a motor/generator on both ends of the shaft for redundancy. If one motor fails, you have a backup in place. If you want to take it a step further, you can even do the same with the shaft so it both sides of the shaft can hook together with each motor optimized for certain rpms corresponding to winds speeds optimizing power for higher and lower rotations, this higher and lower rpms. But for now focus on the blades only effecting the one shaft if they can add to the shaft and individual blade max rpm. If blade is going slower it won't slow down the shaft
GL!
nice one mate - it took two reading to get what you were saying lol- but I got it!
@@ThinkingandTinkering Yea had some trouble clearly articulating that one. Lol
@@ThinkingandTinkering Interestingly enough, in one YT video a guy got a crazy amount of power by using one long horizontal shaft like 50 meters or more and hooking a bunch of turbines on it turning the shaft. It produced a crazy amount of torque which would really power something like a few homes.
(1) These are 3D printed parts. There is no "mold". Run your 3D printer 24/7 if you want to mass produce.
(2) If you "connect" a bunch of them on a shaft, then everything will spin at same speed. The whole helix structure becomes one long part.
@@ReeseL4D Putin's Liberation army of China? I think your making a statement but not quite sure what that is? Lol. How and why did you come up with that name of you don't mind me asking?
I love my 3D printer! It appears to be very similar to yours in terms of physical specs. It still thrills me how complex and beautiful shapes it is able to generate, particularly experimental blade profiles where it would be near impossible any other way. I just wonder how much the 3D printer has accelerated human ingenuity since its inception...? 🤔 What filament are you using out of interest? I used to use ABS but now use PLA for minimal geometric shrinkage.... 👍 Very interested in this particular blades comparative performance 😁👍
this is done in PLA but previously I have been using ABS - I swapped to PLA because Elegoo sent me a load
@@ThinkingandTinkering Ah! 😊👍
PLA is nice and easy to print with, doesn’t usually offgas nasty fumes, but it also doesn’t hold up in hot temperatures (boiling water will easily deform it) and acts more brittle than other plastics, and it shrinks if tempered, so can cause trouble depending on the situation. I also print with PETG when I need a more durable print, it is much more flexible, more heat resistant (prints at higher temperatures but cheap Bowden printers can still handle) and also doesn’t offgas anything too nasty. I used it for a slow-close toilet seat hinge that broke and a wallet / money clip that I’ve used since 2018, so it tests out satisfactory in real world durability. I bought a lot of ABS when I first got my printer but returned it before ever printing with it because I didn’t realize it would offgas significantly when printing, which makes sense, just need appropriate ventilation which would have meant printing in the only bathroom - not exactly the best situation.
@@ThinkingandTinkering unfortunately PLA won't stand up to heat outside where PETG would most probably be better. I have been pondering on a system that could house the whole turbine, protecting it from the elements. It should perhaps have an aerofoil on the air inlet which scoops a large amount of wind, uses a venturi effect to boost the wind between the aerofoil and turbine to increase the flow and use a rudder to face it into the wind / divert it if too strong. Also, the housing could block the drag side of the turbine maximising flow onto the "scoop" side of the aerofoil. I am 57 and love your idea generating work! I will never go into retirement with these projects.
@@gavinatkin9651 If using drag VAWTs in a wind wall I think making alternate ones counter rotation then blocking the combined drag side with a triangle ( point facing out ) should serve to not just lessen the -ve torque of the drag side but also divert that oncoming air to the +ve scoop side. Probably not ultimately as efficient as your idea but it's advantages are it's very cheap and simple to implement, doesn't add much more space taken up by the wall itself and adds no more moving parts.
When mounting the generator it might be a good idea to mount at the top upside down to prevent ingress. I cannot wait to see this in action.
I like VAWTs, there are so many applications where they make complete sense and there's also the potential for them to be silent, so a comparison of efficient power production would be welcome and interesting to see what the noise level of this beauty is. There's no time penalty, it's only the machines time not yours.
Sometimes I feel like I am watch the adult version Mr. Wizzard Rob and his amazing inventions.
lol - cheers mate
Great design! If I’m right these outer spirals function like the flaps of a wing, incrementing lift and reducing drag. Very curious to see it working…
video today mate
Looks awesome! Can't wait to see it in the wind wall.
VAWTs Rule!
absolutely lol
When NREL tests one of these funny shaped turbines and actually gets impressive results, I will also be impressed.
Love the double Helix. I have I design that will change how everyone looks at verticals. Some others out there are close, just missing the key link that I think I have found. respond if interested in talking about it.
Hey Rob, thanks for introducing this printer! Seems like a good choice for bigger parts but I do wonder how small can it go. Do you know what's the resolution spec on these (they don't specify it on their website?)
isn't it 0.2mm?
Awesome machine 👏
cheers mate
Might be interesting to try and print airfoil blade type VAWT. Both straight and curved. Then do a comparison between all of them.
Any possibility of a link to the STL files? Would love to have a go at printing one of these.
Looks great now I have a reason to buy a 3d printer. Will there be follow ups on this ? …I only see the one video.
Just got an Elegoo Mars 3 Pro - resin technology is magic, features smaller than 1mm are crisp. If you don't have a resin printer, you should give it a go. If you're impatient, check out the Voron 2.4 kits for an FDM printer that'll really go fast.
WOOHOO. I was at a marine test laboratory in Holland a few years ago discussing golf balls to an Aerotech spec who had drifted into marine tech (flow and drag are just variants of density). I had to educate him into the facts of life:
1 - it was Dutch sailors playing a game with a stick and ball on the beaches of St Andrews who invented golf.
2 - with tidal turbines, it is prudent to test if dimples on the blades to see if lower RPM can achieve the same results as smoother more gracile constructs.
nice lol
Amazing times Robert….
for sure mate
Robert you are big 👍👍👍👍
Great work as per normal, can you think of a wind turbine brake to go on the new type of wind turbines that go on boats? So when the wind gets 2 strong they don't just shut down.. The boating people will pay you a fortue to make there turbines usefull in high winds.. My idea is an attachment to the blade section with some spring loaded ball bearing that travel out wards from the centre and reduce the frictional contact with the blade hub what ideas do you have and can you do a video on this..
"golf ball dimples" was known over 50 years ago and only applies at certain Reynolds numbers. Also applied to top cyclists outfits
cheers mate
The Ugrinsky original model will be more efficient than the spiral version of the same. As long as you don't add something to stop air slip along the vertical axis. In your case when you stack them as you did on your desk - any radial wind will both turn the turbine and slip upwards. A flat disk would reduce the slip effect. But it looks cool, and even better when it spins.
If Ugrinsky is more efficient than Savonius - I don't know. But Savonius might be ten time easier to make. A tin, or a bucket with a lid or even a barrel is very easy to use as material for a Savonius.
Good luck and have fun :)
I’ve have a design of a 3d printed wind turbine with the same principles. Except alternating rotation direction so there is no vertical axis forces from the twist in one direction. The deign is also best suited to a wind wall where the run of air on the back stroke of the blade pushes the air into the turbine next to it.
have you done a video of it mate?
@@ThinkingandTinkering not yet but will raise one to share. Been on other projects for a bit due to life necessities, but it’s certainly one I’m interested in following up on and revising the model again.
Now that's interesting. And like so many interesting things it has a separate layer of "What else can we do with it?".
Can you modify the printer file so that the "tunnel" section has a shorter chord, (experimenting first with maintaining the same chord relationship between the chord and the other parts and maybe layer changing keeping the current width of the "mouth" and "tunnel" while using the shorter chord) and arranging three, or five, or eight of these "mouth and tunnel" sections spaced evenly around a hollow center section to take advantage of the smaller sections smaller mass acting on effectively "longer" levers to see what happens when the the unique part of the design has less mass and more leverage.
If that small scale, (limited to the width of the 3-D printer), seems promising maybe a larger version can be printed in sections that can be combined to form the drag components attached to longer lever arms.
I'm sure I've seen straight and spiraled "buckets" attached to longer arms around a hollow center before. I know I've thought of it long enough and often enough to believe that it MUST be pretty common. But I'd like to know if this novel design would add enough efficiency to that basic layout to worthwhile.
We’ll you’re like the cat that got the cream😄 Well deserved, no better man to test it. Can’t wait to see what you print. Enjoy 👍👍
lol - oh for sure - it quite honestly amazed me that anyone would send such a thing - just for me doing a vid on it!
I love it "a bit of time" the Bane of everyone with a 3d printer. I'm guessing all told that was 4 to 5 days of printing, trade off is you get a fully customizable part and the material cost is pennies, just time... or more 3d printers!
Can't wait to see the results, I'm half tempted to qeueu up the print myself.
lol yeah it was days!
always use more 3d printers xD
Will be really interesting to see how this turns out
tomorrows vid mate and - if I say so myself - it is. bit awesome lol
@@ThinkingandTinkering So soon? Great!
Wow Robert that's a nice looking design
I'm going to try build a big one out of old oil drums vertical shaft
Thinking cogs on this one a long time now and what's in my head is shield the none power side to counter the effects of the wind and have a rudder in the back side rotating the shield to give the best performance
Have you any thoughts on that ?
I'm in Ireland so just got to look up regulations as I think last time I looked can't be taller than 12m
Also thinking adding angled sheets on the mouth to compress the inward airflow
you will have to do a video on that mate - I would love to see it
👍You poke a stick to open our eyes to find an answer 👍🐝🌞
cheers mate
On Myth Busters, the hosts dimpled a car body like a golf ball, and got better performance out of it.
They also added a lot of weight because they used a thick clay layer to cut the dimples into. According to Adam savage some car companies contacted them saying they had recreated the experiment and did not find the same results.
Yeah I don't buy better performance. The golf ball problem is a common first year engineering problem just about all of us are presented. The reason the dimples work is the ball is rotating after being struck by the club the dimples plus the rotation creates lift. Also round dimples are not the best, hexagons are. You can buy those balls but I believe the PGA has banned them but I doesn't matter if you're not competing.
So my car after the last hailstorm will get better mileage ?
SWEET !!!
I find it fascinating that dimples are better
My Mrs has lots of dimples in her butt cheeks, but she is very slow, interesting 🤔
PetG Rob will be much more robust than pla unless you are going to cast the prints Rob. Good work. Also really happy that you are getting some trials from elagoo.
cheers mate - the main reason I am using PLA is Elegoo sent me a bunch
NB. I too love VAWT - with interest in variable pitch - for near continuous potential power at every point of the wind.. (think of each blade like a high performance sailboat sailing around the wind with every rotation.. Most VAWT turbines (fixed pitch - even aero styles like Darreius) only generates thrust on a very limited portion of the wind circle.
- maybe a feature - of the spiral style turbines is if one attempts to "over generate" - ie. run it too slow with "too much generator" - the wind loses drive and just spirals out the top of the "turbine - the baffles will tend to disturb this and may increase drive - OR drag under stalled conditions.. The mode of operation is slightly different to that of a pelton wheel / anemometer (the most simple VAWT).
With Drag Devices - "surface imperfections" on the windward side 9high pressure) increase drive, but on the lee side may tend to increase drag, though "specifically engineered "imperfections" would win over random print lines... it is all in low cost fun.......
I payed £155 for my Anet A8 9years later still going strong 💪 ideal for 3dprinting parts for Fpv drones..
Also could you use a old segway/balance board wheel on the bottom?
Thinking of a surface for the wind turbine, maybe the surface of shark skin could be an answer as the shark uses this pattern to great effect in water.. maybe this could work the same for air?? just a thought. Elegant design :)
I’m very impressed with the double helix 🧬 wind generator idea. Would you be interested in making a few for sale ??
That looks better than the design I emailed to you!!
I am glad you like it mate
Love your shows. Do you have a link to the design in the above video. I have a new delta printer i would like to give it a go. Thanks!
it's just a thingiverse file mate - the screenshot of the relevant page is in the video
Hi Robert we have just printed our first blade but it looks much smaller than yours did you scale it up and if so what is the OD of yours? Also did you ever get any output figures? Regards Derek