Hoverboard Wheels As Wind Turbine Alternators

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/ opensourcelowtech
New belt drive system for plugging most kinds of alternators and generators onto the $30 Wind Turbine design. You can find the full tutorial for the turbine itself here:
opensourcelowtech.org/wind_tu...
Facebook group for general discussion and contacts:
/ windturbinemakers
My name is Daniel Connell. I prototype and develop basic technologies which anyone can make using recycled materials and simple tools.
The aim is for everyone everywhere to be able to build and maintain their own infrastructure; producing their own energy, food, clean water, communications, and anything else they need.
All designs are open source and license free for any purpose, and full construction tutorials and how-tos are available on the opensourcelowtech.org website.

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Опубликовано:

11 июн 2018

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Комментарии : 97

@agentstaple1 3 года назад

I plan to try sailing around the world soon. If I can spend my life teaching locals of poor countries how to make these project for my dinner I'll live a very happy life :)

@OpenSourceLowTech 3 года назад

@rakeshsomaia1 4 года назад

Daniel Connel, you are a Genius! God Bless!

@garygough6905 6 лет назад

Looks nice. One old trick with flat belts , they like to ride to the high part of a pulley , so a slightly convex ( ) idler can make a good guide too.

@OpenSourceLowTech 6 лет назад

Yeah I'm using that now, thanks for the tip.

@richardmacleod4878 6 лет назад

Hi, thanks for the info. If you turn the bike wheel over, you maybe able to mount a brake to the frame. Awesome work.

@rhiantaylor3446 5 месяцев назад

Great design keeping the alternator rotation >> the wind turbine speed. This will increase output voltage so lower current for a given output power. This will push up the frequency of the AC output so you may benefit from using schottky diodes for the three phase rectifier. Lastly those hoverboard motors normally spin at about 750 tum at max "road speed" but I expect the only limiting factor for speed would be the two bearings.

@1234fishnet 6 лет назад

Your videos deserve a lot more views, therefore I leave a comment for the RU-vid algorithm.

@OpenSourceLowTech 6 лет назад

Thanks!

@LukeMahan-xr4xx 3 года назад

Great stuff!

@daniel2segura 4 года назад

All good options for folks in the developing world!

@Teknopottu 3 года назад

Responding to an old comment but the way I see it, I see no harm in western cultures to also develop to direction of localized and/or personal energy production using recycled materials.

@yusifsuleiman5502 Год назад

And again, what you don't understand is, in most developing countries things like this hover motor is not always available and you may not have the previllage to purchase online, just because of the govt policy in some countries or the vendors do not supply to your country.

@closertothetruth9209 6 лет назад

Sometimes belt tensioners on car engines etc actually are belt guides aswell, nice edges in them

@OpenSourceLowTech 6 лет назад

Yeah good point.

@mauriciopacheco12 2 года назад

excelenta proyecto gracias por compartir Dios te bendiga

@donaldsteele6276 4 года назад

I love it

@Bod88 3 года назад

My hover board has just arrived. I've got a big blue, plastic drum to cut into shape and a bycle wheel. Still got a long way to go before I start building something.

@eletronicaontec104 5 лет назад

Very good. 3 fase generator

@aleckz888 4 года назад

Since you'll put this outside then might as well to design to have covering on the edge of the rim and the entire mechanism of the DC motor. This is to avoid direct heat and rain which will highly degrade the material especially on the belt and avoid rusting as well. Is there a safety feature if the wind outside becomes like a storm level? Great job to you and thanks for sharing 👍👍👍

@OpenSourceLowTech 4 года назад

The electric bits will be housed, yes. I'm aiming to not need a braking or furling system on the turbine, and just make it strong enough to survive most wind, with a hinged pole that can be dropped in the event of an actual hurricane. It will be strongly advisable to use a load diversion system tho so that the turbine is always doing work and so is largely protected against overspinning.

@tollpatsh 4 года назад

Hey Daniel, thanks for the nice walkthrough. I'm wondering what kind of rectifier you are using, and whether or not a capacitor is needed to stabilize the DC voltage? I'm very much amateur here, therefor just asking about what you (or others) think.

@OpenSourceLowTech 4 года назад

Just a standard 3 phase bridge rectifier from eBay. What to plug that into is a whole set of options in itself, but generally some kind of charge controller, ideally with load diversion for when the batteries are full.

@milliosmiles5160 3 года назад

Many of these wheels starting to turn up in the waste stream now ;¬)

@derbybio-agriculture5093 5 лет назад

Hello and thank you ! Can you send me plans for this generator, please!

@sparkles9868 5 лет назад

Love to know what rectifier you will be using and were you got it from

@tollpatsh 4 года назад

Any news here?

@-ahvilable-6654 6 лет назад

Very cool, it looks more and more professional and 'high tech'. Do you have a use for that disk brake?

@OpenSourceLowTech 6 лет назад

Ta. The brake will be within the turbine so no really accessible, was just on that particular wheel and I had no reason to take it off. I'll be using load braking to prevent over spinning.

@DKFX1 Год назад

Apparently a simple rewiring of the coils will give you 3x or 4x the standard power output at low rpm with these motors. Did you perform this modification before hooking them up?

@OpenSourceLowTech Год назад

Voltage yes, wattage depends. If you use thinner wire with more turns you'll trade volts for amps, which can be a good or bad thing, depending on other specifics. I would like these to do sufficient V/RPM that I could direct drive them from the VAWT without the need for gearing/belt, but it's not really quite worth the not insignificant effort to rewind them. And for that there's eBike wheels and DD washing machine motors anyway.

@DKFX1 Год назад

@@OpenSourceLowTech Yes, it's a voltage increase due to lengthening the coils but it seems in low winds it would also translate to increased overall wattage. There's a guy who made a hand crank "Crafty Dude DIY's" with a hoverboard motor. The only thing he did was remove the solder from the wires, then connected the phase beginning with the phase ends and he got 60 watts hand cranking these, while he could only get 15-20 watt with the stock configuration. Perhaps it's worth looking into. I've been trying to replicate his video, but I end up shorting the motor making it very hard to crank. I don't have much of any electrical experience, so would love if you could give it a try.

@aesopshair6690 4 года назад

Hi Daniel, great channel and project - really inspiring! It would be interesting to see your wind turbine connected to a compressor/pump (instead of an electrical generator). Almost all wind power seems to be harnessed for the purposes of generating electricity, but this seems to miss a potential opportunity.... Wind power fed through a compressor could either be stored as for later use or utilised to operate a simple heat pump system and produce heating and cooling which would be a more efficient use of the energy than with all the associated conversion and storage losses of an electric system. Heat pumps have a positive coefficient of power, being able to extract more energy from the environment than is input; in addition, heating represents the greatest energy requirement from a household, so directly produced heat is more efficient than conversion to electricity then back to heat again. Apologies for the excessive detail, but it appears that you have the skill and expertise to give this a try! (more so than an armchair commentator) 😉👍

@OpenSourceLowTech 4 года назад

Yeah these turbines can certainly be used for other purposes than electrical generation. Pumping water would be a big and obvious one, compressed air also definitely an option, tho I'd be much more interested in it for cooling than heating, which is usually best done with solar thermal. I have a design for a basic cooler which just pumps air through a buried water container, in that the ground temperature two meters down is often about air conditioning temperature, depending where you are, but am also thinking about a simple air pressure cooler. It's been on the list of things to prototype for a while now... Maybe this year.

@aesopshair6690 4 года назад

@@OpenSourceLowTech Thanks for the reply Daniel. There are a number of devices that use the sterling cycle for cooling which could potentially offer a simple solution for a wind powered cooler. The reason for considering a wind powered heat pump is that living in the UK, solar thermal is good for the summer months, but not as good for the rest of the year, but the wind often blows when the sun is hidden! Best wishes👍

@OpenSourceLowTech 4 года назад

A Sterling engine run in reverse would certainly do the job of creating coolth, and probably more efficiently than an adiabatic process, but is usually somewhat more mechanically complicated than just mildly compressing air as a coolant. Spraying of which into a room is also a more effective way of cooling a space. Heat pumps are definitely effective tech. Solar thermal tho can also be surprisingly so even in mid northern winter.

@jasonbrindamour903 2 года назад

You would need a lot of reduction gearing to use a windmill to compress air but it could be done. It would likely take a bit of time using today's compressor designs. Lets not forget compressors need oil also!

@jasonbrindamour903 2 года назад

That being said one could keep their small garage compressor full without using the power and leaving the compressor on. As long as you are efficient and leak free and don't consume a lot of air yes...you could use a wind turbine to charge air to use to fill your bike tires and lawn gear :)

@nedlyest 6 лет назад

Can the bike rim be horizontal? The bearings in the rims are supposed to support the weight vertically. Do you end up replacing them a lot?

@OpenSourceLowTech 6 лет назад

This design of turbine really needs to be run vertically. The longest running of these was up for more than three years without any problems with the bearings, which I'll admit I was a little pleasantly surprised by...

@timm2020 3 года назад

where did you get your fastener drawers behind.

@khoshaalkhan7927 3 года назад

Very nice design! Which kind of rectifier do you use for this wheel?

@OpenSourceLowTech 3 года назад

Just a basic three phase bridge rectifier which will handle the voltage and current. Couple bucks on eBay.

@brunocabral1578 5 лет назад

Any plans on how to add the turbine blades to the wheel?

@OpenSourceLowTech 5 лет назад

Tutorial link in the description.

@DarrenCluff 6 лет назад

What did you use to attach the pulley to the wheel? Can you give a close up of that? Can you put two wheels on one belt?

@OpenSourceLowTech 6 лет назад

Basically just bolted a little flat steel plate onto the face of the rotor of the wheel, and then bolted the pulley onto that. I'll be doing a full animated build tutorial of all this once it's properly tested. You could do multiple generator's / alternators per turbine, but you'd want to wire them each separately to your charge controller or wherever they're going. If you try to put them in series or parallel with each other their voltages will almost certainly start interacting in ways you probably won't want..

@DarrenCluff 6 лет назад

OpenSourceLowTech thank you

@hichamtassi1753 3 года назад

Hello, nice video ! how did you manage to attach the pulley on the axis of the motor ?

@OpenSourceLowTech 3 года назад

Short answer is I just bolted it onto a small backplate and then bolted that onto the face of the hoverboard wheel, but it was a bit of a bodge job and I'm working on something a bit more elegant.

@hichamtassi1753 3 года назад

@@OpenSourceLowTech ok, not always easy to find the right center of some circles. Did you test it in the wind ? how many volts ?

@OpenSourceLowTech 3 года назад

I've been using them for the water turbine as well (check my channel), and center that hole by coming through the back of the face cover where there's a housing for the axle bearing, putting an M8 nut around a 6mm drill bit which sits nicely centered in the housing. If that makes sense.

@hichamtassi1753 3 года назад

@@OpenSourceLowTech to increase the voltage, i was thinking on either put 2 wind turbines in series or install a big pulley to increase the RPM, what would be the best in your opinion ? thanks

@OpenSourceLowTech 3 года назад

Alternators or generators in series will tend to negatively interact with each other unless they're set up in a very particular way, unfortunately. I've been using an automotive belt and pulley to gear the system up by about 10:1.

@MorganBrown 4 года назад

what RPM is the hoverboard motor rated for?

@OpenSourceLowTech 4 года назад

Don't know if it has a rpm rating as such, but the speed it's going there would be the equivalent of the hoverboard traveling at 45 km/h. However, once it's under load the revs will third to halve.

@LukeMahan-xr4xx 3 года назад

How did you attach the alternator pulley to the hoverboard motor? It looks like it's attached to some kind of plate and the plate is bolted onto the face of the hoverboard motor? Drilled and tapped holes? Thank you for sharing!

@OpenSourceLowTech 3 года назад

As in this video it's essentially as you say. I've got an easier and more precise method now tho, little tricky to describe in text but will include it in an upcoming video.

@OpenSourceLowTech 3 года назад

However, the current test build I'll be first trying looping the belt round the wheel hub itself. This'll mean about half the ratio increase, so half the rpms and voltage of the pulley, but at also half the torque so should spin up easier in low winds. And is also one less thing to need to get and attach. But will trial both and compare.

@LukeMahan-xr4xx 3 года назад

@@OpenSourceLowTech I was wondering have you tried machining down the tire a little bit like you did with the longboard wheel? Hook the wheel up to power and turn it into a lathe?

@OpenSourceLowTech 3 года назад

I just take the whole tyre off. Also no longer cut down the skateboard wheel, just use a larger one that the belt doesn't run off.

@dugidugi7088 3 года назад

for the best these generators from hoverboard and generators from washing machines diretdrive inverter /have you tried to make with these generators

@OpenSourceLowTech 3 года назад

Direct drive washing machine motors are pretty good, and should be well suited to vertical axis wind turbines specifically. But they're also quite hard to find and work with..

@rodgermasinde3696 4 года назад

How much current does it produce

@OpenSourceLowTech 4 года назад

I'm not sure what amperage the wheels are rated to, probably more than 3 and less than 10...

@jideoforikejehovah8786 2 года назад

Please any idea where I could buy a hoverboard alternator

@OpenSourceLowTech 2 года назад

Depending where you are, can usually get the boards second hand for like $20-30.

@jesselang2546 2 года назад

Can the 3 phase wires be hard wired to a standard trickle charger? This would reduce need of bridge rectifier, charge controller, and dump load would it not? I’m not claiming to be knowledgeable in this area but merely asking if it would work and be easier to charge batteries.

@OpenSourceLowTech 2 года назад

As in, something normally plugged into a wall? No, because they'll be single phase not three phase AC, but other than that, kind of yes. It'll have a min and max voltage it can work with, and will almost certainly be very inefficient, but minus the phasing issue (which can be resolved with a bridge rectifier, which are not expensive, and most wall plug stuff will actually work fine with DC as they have their own bridges as the first component, so don't realise they're being fed DC) it should basically do the job, and be a lot easier to source globally than the fancy stuff.

@jesselang2546 2 года назад

Thank you for the insight, as I thought more about it thought to my self yeah that’s not a constant power source it can have highs and lows but will be building the rectifier this weekend with some diodes from RadioShack. Any advice on best diodes for the build?

@OpenSourceLowTech 2 года назад

I always just buy my rectifiers as units on eBay or wherever, but they're easy enough to make. Not sure what diodes to use, guess only real considerations are not blowing them up, and their voltage drop. What's it to be attached to?

@jesselang2546 2 года назад

I would like to charge a battery bank with several of the hoverboard generators. What all are you able to power with your vawt setup?

@emilee172 3 года назад

Doesn't look like the belt is in alignment and that Will make it wander, I dont see the groove in the idler pulley (skateboard wheel) as necessary if the alignment was more true, also it is said that a chain drive is best for this type of project as there isnt the same tension needed which adds friction and drag

@OpenSourceLowTech 3 года назад

I tried with chains initially, but they're harder to work with for this kind of application, particularly in getting them to engage the wheel rim without slipping or wear. The alignment in the video may well be off, I hadn't fine tuned it at that stage. That really needs to be done once the turbine is in place on the pole, as things tend to settle. I'm also now going with a convex idler pulley as it's better for centering the belt than a concave / groove.

@showaib4392 2 года назад

Hey bro i m juste windering how much minumum wat can we genarat from wind turbine from this scooter motor par hour please anser me

@andreylibovsky2348 4 года назад

Did you finish this project?

@OpenSourceLowTech 4 года назад

Am in the process of putting some turbine systems up in Scotland at the moment. Also using the wheels as alternators for my water turbine design, except direct drive rather than belt driven, and they're doing well so far.

@autobri1 5 лет назад

Why have all that loss with belts and pulleys, use a lever mount and spring to drive the big wheel straight to the little one.

@OpenSourceLowTech 5 лет назад

Friction drives tend to slip. I did try to get a locked chain solution to work which you can see in other of my videos but I couldn't really get a nice result. Belts are a thing for a reason.

@jamest.5001 4 года назад

Why not use the alternator from the rover?

@OpenSourceLowTech 4 года назад

As in a car alt? They have their strengths, mostly in max power and general availability, but are low efficiency and need a lot of revs to get any useful voltage out of. Motorbike alts are usually better, but need to be mounted on a bearing.

@calysagora3615 3 года назад

Car alternators are always the suggestion from people who think no one ever thought of THAT obvious one... 😑 Sarcasm aside, they are about the absolute worst option for turbines of any kind, as they have no magnets and require generating its own electromagnetism to work. Commercial attempts to sell conversion interiors for common car alternators have been tried and failed many times as well. Just use ANYTHING else and be better off.

@jamest.5001 3 года назад

@@calysagora3615 I was meaning convert to PMA, I know all about alternators, and their workings, yes they are about 50% efficient hot, in stock configuration. The means if regulation is the largest reason for the effiencey, however, conversion to pma greatly improves this issue, it does require a electronic means for regulation, either a charge controller, or dc to dc converter, the voltage can wildly fluctuate with speed, when converted to PMA, I personally rather use a 3phase pancake motor, like from a washing machine, what ever you were to use, it will require modification optimum performance,

@calysagora3615 3 года назад

@@jamest.5001 Too bad those useful washing machine motors from top-fed vertical washers are only used in America. The rest of the world uses universal motors and front-loaded machines almost exclusively, and all top-fed machines still have horizontal drum (but washes much better). And yeah, choosing an alternator that needs heavy and skilled modifications costing money kinda defeats the whole idea of DIY for cheapness and simplicity.

@nicopace 6 лет назад

u still having issues with your site. Can I help? have some skills :)

@OpenSourceLowTech 6 лет назад

Cheers, working on it, hopefully working soon.

@LukeMahan-xr4xx 3 года назад

Same, would be happy to donate web development skills.

@razacksossohou3943 3 года назад

Hi , professor send me generator please.

@Dom_R_222 4 года назад

sorry if i'm making a fool of myself here but don't you need to rectify alternators and aren't rectifiors not that widly available

@OpenSourceLowTech 4 года назад

You generally do, but a simple bridge rectifier can be made just with three diodes, or bought for a couple bucks like I did.

@mikeguitar9769 6 лет назад

Love the sleek design, well done. Also this video might interest you: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-6sM0Qjumyro.html

@OpenSourceLowTech 6 лет назад

Very interesting. Wasn't the case with the more standard shaped skateboard wheels I tried first, but they were probably too convex. I've got some spare longboard ones tho, I'll chuck a crown on one of them and see what effect that has.