diy wind turbine 2

8/10/2019 DIY Wind Turbine 2

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http://www.instructables.com/id/DIY-Wind-Turbine-2/

Food Living Outside Play Technology Workshop

DIY Wind Turbineby DIY Daveon August 17, 2011

Table of Contents

DIY Wind Turbine .............................................................................................................

Intro: DIY Wind Turbine ......................................................................................................

Step 1: Parts & Tools .......................................................................................................

Step 2: Motor .............................................................................................................

Step 3: Blades ............................................................................................................

Step 4: Backbone ..........................................................................................................

Step 5: Flywheel ...........................................................................................................

Step 6: Assemble ..........................................................................................................

Step 7: Wiring .............................................................................................................

Related Instructables ........................................................................................................

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Comments ................................................................................................................
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Author:DIY Dave

"CAN'T can't do anything until TRY comes along and does it" -Grandpa

Intro: DIY Wind TurbineThis instructable will demonstrate how to build a power generating wind turbine. My inspiration came from seeing other wind turbine instructions online. I hope to simpthe process with clear, easy to follow instructions.

Thanks to mdavis19for his instructable How I built an electricity producing wind turbinewhich really sparked my interest in wind energy.
http://www.instructables.com/id/How-I-built-an-electricity-producing-wind-turbine/http://www.instructables.com/member/mdavis19/http://member/DIY++Dave/http://member/DIY++Dave/


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Step 1:Parts & ToolsPartsBattery - - - $58Battery Box - - - $8Battery Connectors - - - $2.25500 Watt Inverter - - - $45Generator - upcycled treadmill motor - - - $0Tail - scrap metal - - - $06'' PVC pipe 10' length - - - $30Bolts & Screws - - - $51'' Iron pipe 60'' length - - - $14Pipe Nipple - - - $2.50Pipe Flanges - - - $8Pipe Swivel Connector - - - $3.50

16 Gauge Wire (already owned) - - - $0Black spray paint (already owned) - - - $0

Total - - - $176.25

Power toolsDrill & drill bits

Jig saw

Table saw

Belt sander

Hand toolsVarious screw driversTap set

2 pairs of Channel LocksProtractorMeasuring tools (I used a tape measure and a caliper)

Step 2:MotorThe most important part of this project is the electric motor. Luckily, I had a nonworking treadmill in my garage just waiting to be scrapped out.

DC motors, when turned, will generate current. Be sure the motor you plan to use is DC powered, and it's helpful if it has a flywheel attached.


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Step 3:BladesAnother vital part is the blades. I cut mine from 6 inch PVC pipe with a jig saw and table saw.

Cut a 2 ft length of pipe, split it in thirds, and then cut the shape from each third. The jigsaw was used to rough cut the shape, and the table saw to straighten them. Mycuts were less than perfect, so I had to sand them down for even weight and size.


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Step 4:BackboneThere will need to be a backbone to connect the motor to the tail and the stand. Mine already had a section of square iron attached.

At this time, add the tail and find the balancing point. The balancing point will be where it attaches to the stand.

Drill, tap, and install the pipe flange.

Image Notes1. Mark where it balances at.


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Step 5:FlywheelTo prepare the flywheel to accept the blades, you will need to drill and tap holes in 3 spots. I used 1/4"-20 thread machine screw for my blades.

Drill and tap the first, measure 120 degrees around, and repeat. You should now have 3 holes evenly spaced across the flywheel.

Drill 2 holes in each blade.

Screw the blades into the 3 holes you just drilled and tapped on the f lywheel.

You should currently have the blades screwed on with only one screw, so that they can pivot. Measure the distance between the tips of each blade. Once they are alleven, mark your 3 additional holes on the flywheel, making your marks through the second hole you dril led in each blade. Drill and tap at each mark, and screw yourblades on with an additional screw.


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Step 6:AssemblePaint the parts. Assemble everything together and take it for a test drive. I wanted all the bugs worked out before it was in the air, so I strapped it onto a trailer and toofor a whirl.

For the turbine to be most effective, the blades and flywheel should all be in balance. To be sure it's well balanced, spin the blades several times, marking whichever sends up on bottom. The marks should all be spread around randomly. If they are all in one spot, you need to lighten that side by sanding or drilling away some materia


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Comments

49 comments Add Comment

NightHawkInLightsays: Oct 17, 2014. 1:47 PM REPVery cool instructible. Do you not run the risk of overcharging the battery without some sort of shutoff though?

BG_instructssays: Sep 29, 2014. 8:27 AM REP

have 4200 Watt solarpannels on my roof, next thing from mother earth to collect is wind. Not allowed to install a windturbine where i live, so i'm thinking of installation that blows into a round window in my rooftop, kind a tunnel with a mill inside.

So i would not install it outside, but inside my house.

This simple set up seems perfect to start trials...

MatWellersays: Sep 30, 2014. 7:52 AM REPI wonder if you could make your attic wind tunnel out of a length of PVC running from one end to the other, using computer fans inside as the generators.Those things move fairly easily and you can probably get an endless supply of them for free.

M2aestrosays: Oct 1, 2014. 11:34 AM REPThe inefficiency of such a contraption would cause it to generate so little power as not to give payback in its service l ife time.

MatWellersays: Oct 1, 2014. 12:30 PM REPI believe it, I was just chucking out an idea. I only knew the cost of such a thing would be near nothing, I'm not an electrician, so I didn't know if youcould get any current out of ten fans or not. Regardless, I wish you well in your quest!

rrmolasays: Oct 5, 2014. 6:56 AM REPUnfortunately, computer fans cannot be used as generators, because they are brushless. Any attempt will produce zero volts. Checkyourself...

Kinnishiansays: Oct 9, 2014. 1:12 PM REPThe fact they are brushless is not the problem. The problem is that they are fed by a controller.

So (two wires) ---> brushless controller ---> brushless fan.

The controller would block the back EMF from being tappable.

But in reality, most windmills are undoubtedly brushless, but you need a proper rectifying circuit for the brushless motor.

gaparkessays: Sep 30, 2014. 3:46 PM REPNot enough return on current.

Buckshott00says: Sep 30, 2014. 10:54 AM REPbuilding codes can really stink sometimes. there's lots of energy sources to be had; but people are more worried about the value of their home based ohow the neighbor's house looks. Here are some other ideas that can sometimes skirt HOA or NA

Sometimes you can install VAWT

What about a Satellite dish? You could go
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with concentrated solar,

if you have the $$ geothermal energy,

Biogas generator

Wood Heater and/or Furnace

M2aestrosays: Oct 1, 2014. 11:52 AM REPCareful with solar energy concentrating devices; wear welding goggles, place where nobody can accidentally view the nearly focused spot or strip oflight, which certainly can blind, very rapidly. A linear / parabolic t rough could be much more efficient for the $$ than would today's (small) satellite dish,would allow collection of heat at a lower temperature (usually more efficient because of reduced re-radiation of the IR), but could also be managed forhigh temperature for the person competent to build as thermal turbine.

Wood heaters and furnaces tend to be major polluters.

If you live next to a large lake or by the ocean or large-enough estuary that your heat sucking or heat dumping activities would not cause environmentadamage, then you could use the very large heat sink of the ocean/bay/estuary in conjuction with a heat pump to lower heating and cooling costs.Similarly, if you have a large volume well, you could heat pump that. I recall that Hewlett and Packards third employee, an engineer with whom I hadcontact, had heat pumped the Pacific Ocean to heat and cool his home in Pacific Grove, CA.

Nothing particularly new in any of what I stated, but often people forget what should be obvious.

Careful in making propeller assemblies; remember that the highest stresses are at the hub!

gaparkessays: Sep 30, 2014. 3:46 PM REPWhy not hook this up to a roof mounted gable vent?http://www.lowes.com/SearchCatalog?catalogId=10051&Ns=p_product_qty_sales_dollar%7c1&identifier=Wind+Turbine+Attic+Vents&langId=-1&storeId=10151&N=4294765328

M2aestrosays: Oct 1, 2014. 11:41 AM REPThe short answer to this question is that it would be so inefficient!

Buckshott00says: Sep 30, 2014. 10:54 AM REPbuilding codes can really stink sometimes. there's lots of energy sources to be had; but people are more worried about the value of their home based ohow the neighbor's house looks. Here are some other ideas that can sometimes skirt HOA or NA

Sometimes you can install VAWT

What about a Satellite dish? You could gowith concentrated solar,

if you have the $$ geothermal energy,

Biogas generator

Wood Heater and/or Furnace

DIY Davesays: Sep 30, 2014. 3:11 AM REPThat sounds like an interesting plan. I'd love to see your solar set up and your turbine when you get finished

melissa.verzinisays: Sep 28, 2014. 3:55 AM REPWhat Power does it put out??

what can you power with it??

DIY Davesays: Sep 30, 2014. 3:18 AM REPThe turbine puts out DC current that charges a battery. Then it flows through an inverter that converts it to AC (regular plug in power). The inverter hasstandard plug ins and a usb charging port

1dot21gigaflopssays: Sep 30, 2014. 8:55 PM REPwhen you use a DC motor as a generator in this situation it actually creates AC. If you use a diode bridge, you can double your power output. you'reloosing half the AC wave if you only have 1 diode in the path. A real charge controller is recommend though.

mrmucoxsays: Oct 6, 2014. 1:16 PM REPSorry, but that is incorrect. Spinning a DC Motor creates DC electricity. The commutator or split ring keeps the fields in the same orientation.
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????????says: Sep 30, 2014. 11:31 AM REPFrom the Bernouilli perspective, wouldn't it be more effective if you fil led the concave side of the blades?

M2aestrosays: Oct 1, 2014. 11:54 AM REPYou would not want to add much mass to the blades, for it would increase stress to the hub.

scott.macarthur.39says: Sep 30, 2014. 1:54 PM REPI have a question here. I have a 5500 watt generator on which the gas briggs and stratton motor seized up. I scraped the motor, but am left with the generatorportion. Does anyone know if this could be used instead of an electric motor?

laughingjunglesays: Oct 1, 2014. 10:59 AM REPWith a generator that size, it will take a lot of force to turn. Best off replacing the motor or attaching a horse sized hamster wheel. Actually, there arethese guys who built what you're asking about. They said they built two and it cost $3,500 each. Pay back 2-3 years (in Kansas). Just search for "5500watt wind turbine".

x4junksays: Sep 30, 2014. 6:28 PM [email protected], sure, but your blades would likely have to measure in excess of 20 feet in diameter.

profpatsays: Sep 30, 2014. 9:35 PM REPgreat instructables, i already have all the materials lying around, in fact i have already cut the pvc pipe, when i tested the treadmill motor the brush holder aall burned..now the project has been standing by for a year already. i am planning of building my own generator out of magnets and coils..

fox0902says: Sep 30, 2014. 7:31 PM REPi notice the RPM of your motor is very fast, i doubt if its produce enough voltage to charge a battery.

killboxsays: Sep 30, 2014. 12:08 PM REPAnything about the voltage/current you are actually getting? its designed to run at 4900rpm, so at 30-90 rpm id expect in a good wind, you are likely not puttingout a huge percentage of what the motor would have consumed. running.

agatornzsays: Sep 27, 2014. 8:46 PM REPhaving an old treadmill like this i had the idea of giving the kids something to run for.. by connecting it up to a set of lights.. but you really had to run hard toget the first light up - and i was told i needed a reostat? or something? ( no electrical knowledge) to make it easy to start... does this apply for the turbine to

sbergeron2says: Sep 30, 2014. 9:53 AM REP@agatornz, The treadmill runs using a transmission of sorts, either a geared setup, or a belt usually. If you make the pulleys an even 1:1 ratio, they shouldbe able to get it going easier. You could also add a capacitor in the line that will hold a charge, making it easier for the kids to get started.

mikeb110says: Sep 30, 2014. 9:15 AM REP

charlessenf-gmsays: Sep 30, 2014. 8:03 AM REPJeeze, I just tossed my non-working treadmill!

nlinventorsays: Sep 30, 2014. 6:46 AM REPNice easy flowing writing style! As others have mentioned a reliable means of preventing over-speeding would be great.

petercdsays: Sep 27, 2014. 10:02 AM REPGreat instructable, I don't see a charge controller anywhere in your setup, the mdavis19one works a charm and its what I use in my setup.

DIY Davesays: Sep 29, 2014. 4:25 PM REPThanks for the input. I plan to use up the battery power pretty consistently. If I find I need it, I have a spare charge controller that I purchased with a solpanel.
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