1. Place the motor on top of the square tubing and bolt it in, using the two 5/16" x 1 3/4" bolts.
2. Place the diode on the square tubing, about 2" behind the motor, and screw it into position using the self-tapping metal screw.
3. Connect the black wire coming out of the motor to the positive incoming terminal of the diode (Labeled AC on the positive side).
4. Connect the red wire coming out of the motor to the negative incoming terminal of the diode (Labeled AC on the negative side).
5. Center the tail over the square tubing, at the back end. Clamp your tail onto the side of the square tubing.
6. Using 2 self-tapping screws, screw the tail in place.
7. Place each blade on the hub so that all the holes line up. Using the 1/4" bolts and washers, bolt the blades to the hub. For the inner three holes, use two washers per bolt, one on each side of the blade. For the outer three holes, just use one washer next to the head of the bolt. Tighten.
8. Hold the end of the shaft of the motor (which comes through the hub) firmly with pliers, and turn the hub counterclockwise until it tightens and stops.
9. Screw the nipple tightly into the floor flange using a pipe wrench.
10. Clamp the nipple in a vice so that the floor flange is facing up and level.
11. Place the square tubing (and everything that is on it) on top of the floor flange and move it so that it is perfectly balanced.
12. Through the holes of the floor flange, mark the square tubing at the point of balance.
13. Drill these two holes using a 5/32" drill bit. You will probably have to take off the hub and tail to do this).
14. Attach the square tubing to the floor flange with two sheet metal screws.

For a longer life span of your wind generator, you should paint the blades, motor sleeve, mount and tail.
WOW! very well done instructable!!<br>Yours put mine to shame!<br>I found your instructable while doing a search for treadmill motors
<p>Hello! I am a high school student and is planning on building a wind turbine for my project. Will this design be do-able for someone like me? How much experience do I need to take on this project? How much electrical energy does this produce and for what range of wind speeds? Any advice and replies would be greatly appreciated! </p>
<p>One other thing, i see someone saying there would be no drag if it was on the front of the caravan, if you put a wind powered fan in front of a wall it will not run very well, no power. The air needs to be able to flow through freely so it would need to be mounted on the side or top, nothing in behind it. If you mount it to the front of your truck the wind will go through the fan and then the AC condenser, oil cooler, radiator and then run into the engine, not as much wind resistance but there still is and you would need to run a lot of heavy wire clear back to the trailer batteries and a regulator in the middle some where so the batteries won't over charge.</p>
<p>I forgot to mention one thing about the motor and fan size. Any kind of a generator when under load will have resistance, if there is to much resistance and not big enough fan blades it will come to a stop or run very slow. I don't think you could use a plastic fan or even a cheap metal one either, think about the wind pressure and turbulence on top of the trailer and you would need to mount it very well or the wind would just rip it off.</p>
<p>There are pros and cons to putting one on the top of your trailer or using your truck alt. There will be some drag which will make the engine work harder using more fuel but it would probably be about the same as what your alt would pull from the engine anyway., most alt's pull about 15-20 horse from your engine at peak output.Think about this though, if you have 1 or 2 batteries in your truck and 1 to 4 batteries in your trailer plus all the other electronics and lights running, that is a huge load on that alt, plan on replacing the alt every so often, the alt's them selves don't go bad but the regulator inside burns up or the brushes wear away. The wiring from the truck needs to be the right gauge to handle that much power for charging the trailer batteries and will the fridge be running while your driving, most fridges pull 10 amps when on electric setting. Putting one on top of the trailer would be good for taking the load off the alt but they do have rpm limiters and if you were going down the road at 65-80 mph the blades would fly right off and i don't need to say much about what would happen if you drove under a low overpass. What i do, is i just charge my batteries all the way before i leave, get to my camp site, run my generator to charge the batteries back up if i was running the fridge while driving, if not then my batteries would still be charged and i would just set up my two solar panels and let them keep the batteries charged. No load on the truck or anything on top of the trailer. I have two 300 w panels that cost me $150.00 ea and a charge controller that i think was about the same. I have 4 6v deep cycle batteries hooked together as one big 12v battery, all the power in the world, no problems.</p>
<p>I am biding time (saving $) on solar panels for our Airstream, and was looking for a way to make a small wind generator to mount on top of the trailer to charge batteries while driving. Any reason why something like this wouldn't work? Is there a limit to how fast the blades/turbine can spin before it would create problems? I think I will likely find an old fan to use for the blades, as fan blades would likely be sturdier than the home made pvc blades mentioned here.</p>
<p>As everyone else has already told you. You will loose energy, unless your turbine are (unlikely) more efficient than the generator in your car. So charging batteries from the turbine while driving are not that a good idea. Use the one from your car instead. Each transformation of energy from one form to another will give loss in energy (that is why stuff get hot when doing this, that is energy loss).<br>If that would be a good idea to charge batteries from wind while driving, Tesla cars would have that already. ;-)<br><br>While your car is standing still, it is a great idea, as a complement to your solar system.</p>
<p>You'd have better efficiency charging the batteries off your vehicle's alternator. Drag will burn more fuel than the extra draw on your engine. Plus no rpm, charge controller or water concerns</p>
<p>A fan connected to an alternator mounted on front of caravan would not add excessive drag to vehicle &amp; if it was a hybrid it could actually aid in mileage by charging the batteries whilst driving</p>
If using smaller blades, will drag really be that big of an effect (especially already towing a trailer?).
<p>Drag, whether on the alternator or wind turbine will be minimal in both cases, just more on the turbine. You're already driving the alternator, so charging the batteries would be an inconsequential addition. When parked, the turbine would be the way to go. And you're not likely to overspeed it.</p>
If I'm using smaller blades, would it really have that great of an effect (especially while already towing a trailer)? Plus, even while parked, if there's wind I'd be generating electricity.<br><br>And the trailer is of course already set up to charge from the alternator while towing.
<p>Well it would induce drag which means your truck will pull harder, let alone it being extremely inefficient. Use your truck alternator. Spend the money you would put in this into a bigger amp output alternator and larger wires to the trailer.</p>
<p>Hi - using this to charge while parked is an excellent idea. Using it while driving is an inefficient one. There are power losses every time power changes form so driving to generate wind to generate electricity will waste more power than charging from your vehicle's battery system. You are right, in your later comment, that a smaller set of blades will cause less drag but, as a direct consequence, they will also generate less electricity. </p>
<p>kidjedi, If you are thinking of having this running whilst driving, I would suggest that a Savonious Rotor (mounted on the roof of the van) would be better and far easier to instal. As it is low profile it won't be on a mast and there is less bracing required, to support against the wind flow.</p>
Yeah... I was actually already looking at switching the rotor design to Savonious. Thanks!
<p>&quot;There is nothing more rewarding and empowering than making a wind powered generator from scrap materials.&quot;<br><br>Really? NOTHING?</p>
<p>NOTHING. Except making TWO wind powered generators from scrap materials. Or one wind powered generator out of toothpicks.</p>
Then your life is significantly different from mine.
<p>I wish this project is free</p>
<p>I wish this project is free</p>
<p>what's the output of the motor and at what RPM ?</p>
<p>what's the output of the motor at what RPM ?</p>
While I like the design, I feel that there were additional drawings/labels needed to make the blade construction easier to understand. I have no problem in figuring it out as I have a background in making aircraft propellers and blades, but without diagrams labeling each step, many will fail to grasp how it goes together IMHO
<p>First I wish to say that I think you have done things quite exquisitely. the drawings, descriptions &amp; directions are very well written &amp; put together. Because I am not very well educated on these types of things, some of it is a wee bit confusing for me, BUT, when I look at the drawings &amp; read the directions, it does not seem that hard to figure out.</p><p>Now about Vela Creations. I visited the website, and yes they have some very nice pictures on the site, However, I was rather disappointed by the lack of directions, measurements, etc. there were frames for different things that would be a lot easier to build if they had directions &amp; measurements describing what piece is what size &amp; so forth.</p><p>Lastly, for this ible I commend you Sir. I think if I can follow this, than just about anyone anywhere can also. Thank You for sharing Sir.</p>
<p>the thing with this is.. there is no rpm limiter.. so if a high wind comes well those blades break off and can kill someone.. thats why commercial units use a mechanical or electronic rpm hall sensor or some kind of rpm limiter... so i woulndt use pvc blades you can buy blades that are designed for this pvc likes to shater into razors</p>
How much does this power? Like will this power a whole house or?And how long?
<p>i'm Impressed with how detailed how detailed your Instructables is...commendable job. </p>
<p>the power output of a windmill like this is compatible with how many solar panels?</p>
I have a permanent magnet 2.50 HP heavy duty treadmilll motor. It has a positive wire, a negative wire, and 2 blue wires that come off the positive post. What do I do with the blue wires? Do I have to use the bridge rectifier if I am using a charge controller? Any help would be appreciated.
<p>no brige rectifier is needed the i think the blue wires go to a temperature sensor which tells the treadmill what temperature the motor was. anyway for a wind turbine only use the black and red wires the blue wires are not needed</p>
Same. Anyone????????
fantastic! <br>made this for my yacht, I used a kids scooter for the swivel mount and the base.<br>thanks...
<p>As a hobbiest that has built a few of these I'll try to answer some common questions;<br><br>Keeping the wires from twisting. Place a plug/socket inline with the power cord at the base of tower, check it weekly for twisting, and if cord is twisting unplug it and un-twist it. I prefer twist lock plugs for this, ask at the big box store or go to an electrical supply house.<br><br>The 2 Blue wires on treadmill motors. Those are used for speed control of the motor <br>when used as a treadmill motor, they are un-needed for this application, just cut them off.<br><br>Motor Selection. Induction motors are not a good choice for wind turbines, the only way the can be used is by removing the rotor and adding magnets to it. Car alternators require being spun at high speeds, not a good choice. What you want is Permanent Magnet Treadmill motors.</p>
<p>i like it soo much</p>
<p>How does it continue to face the wind without twisting the wires?</p>
<p>can you use a car generator to feed batteries and then use a converter for the ac/dc conversion?</p>
If this is a dc brushed motor then the coil is the one rotating inside the magnets so it will automatically produce dc, adding a full bridge rectifier will ensure that if the motor spins in reverse it will produce the same polarity but it will decrease the output by 0.5 to1V
can ac motor be used? i got one out of my old fridge. it has three wires white blue and orange.so can i use diode bridge and acheive the same result as with a dc motor? on the side it says : merkle-korff industries model 3424rp-420 115v. 60 hz. idle: 1.20 amps rated: 1.4a-17mfd on/off: 2/20 sec p/n-10114804 any help would be greatly appreciated. thanks
turn the motor by hand and see if you can read a voltage above 1 volt. If not, it probably won't work without gears or pulleys, if at all. If you want a motor that works, go to <a rel="nofollow" href="http://www.velacreations.com/chispito.html">http://www.velacreations.com/chispito.html</a> and buy one from the recommended supplier.<br/>
acttualy it does have gears and it spins very fast, but when i connect it to my multimeter i get 0 volts. even when i use diode bridge still 0 volts, i tried every combination of the three wires, but no luck. does anyone know why? also i took it apart and noticed that it doesn't have any magnets(at least i could see any) in it, is this the reason?
The fridge motor is going to be an induction motor, so it wont work. Neither will a universal motor, as neither type has permanent magnets,
Since it doesn't have magnets, It is probably an induction motor, I don't think you can use them to generate electricity, Just my 0.02
yes, that is the reason. It would need to get up to speed before any output. You can take a look at the discussion board at otherpower.com for information on how to make a motor like this work.
How would you measure that one volt? I dont have any electricity measuring tools. Is there another way to possibly do it. If not how much would one of those cost?
i got my multymeter for less than 3 dollars, menards sells them for about 5 dollars.
Good project but the instructions in this page could be a lot clearer, or illustrated with some photos
I just loved it! I've searching for something easy and not expensive, now it is here. <br><br>Thanks.<br>Rodney,
In some circles, this 4 diode arrangement trapped in a little cube that takes AC and makes it DC is called a Full Bridge Rectifier. You will have better luck finding one at many electronics stores by that name. Frys Electronics sells them for about 10 bucks in California. Website frys.com

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