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Build home wind turbines or residential wind turbines. Learn how residential wind power works.
These instructions to build a windmill include a 1,000 watt
and a 3,000 watt versions.
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watch some short videos of my testing my homemade windmills
Here is an excerpt from the book...
This e-book now includes a section on building 3,000 watt home wind turbines with 11 foot diameter blades.
This download also includes the new DC Motor Analyzer software. The latest version includes vertical axis wind turbines as well. Just take a look.
Here are some pictures from Tim in Wales. He just completed a 1,000 watt home wind turbine. Notice the blades are 9 feet in diameter. He has almost completely desulfated a 24 volt forklift battery. Gret Job, Tim!
F.A.Q.
Q: How many megabytes is this e-book?
A: It is 45 pages, 3.3 MB and full of color pictures and diagrams and it is an instant download.
Q: Can I live without the DC Motor Analyzer software and just buy the book on home wind turbines?A: I used to sell it that way. But two things happened. I was overwhelmed with questions about choosing the right motor for the generator and blade size,etc. The other thing was that I spent hours plugging away at the equations trying different scenarios for myself and customers. I'll be honest, I made the DC motor analyzer for me. It made my life WAYYYYYY easier. And when I started selling it with the wind turbine ebook, then the questions went down to almost nothing. So, the short answer is NO.
Q: Can I really get free batteries
A: Absolutely, yes. In the book I show pictures of 2 forklift batteries I picked up for free. These are each 24 volts, 700 amp hours. Or 12 volts at 1400 amp hours if you parallel the two halves. Both batteries together are 12 volts at 2800 amp hours. That is the equivalent to 28 golf cart batteries. That's $2,000 - $3,000 worth of golf cart batteries. Or about $8,000 in forklift batteries if they are purchased new.
Q: How long is a forklift battery rated for? Does it last longer than golf cart batteries?
A: Forklift batteries are rated for 20 years while golf cart batteries are only rated for 5 years. They are both considered "traction" batteries and are deep cycle. In comparison, running your house on a large bank of car batteries would only last about 6 months of heavy cycling.
Q: Are the blades really free, and how long does it really take to carve them? A: Yep, the windmill blades are free except for the work you put into them. My first set took about 3 hours because I didn't know what I was doing. Now I can carve 3 windmill blades in about an hour.
Q: I know someone with a small home wind turbine that produces 400 watts, but, My God, that thing is loud. How loud will your homemade windmill be? I have neighbors you know. A: I've gone through about 10 iterations of windmill blade testing and all of them have been quiet, even in high winds. The only difference is that most of those designs weren't as efficient as my latest. These blades start spinning in about 3 mph wind. They start charging a 12 volt battery at about 5 to 12 mph wind (depending on generator used).
Q: Can I power my house from one home wind turbine? A: Simple answer is yes, but it wouldn't be practical for most. In this book I look at practical. People use way more power than they think. "Could you power your whole house with 1 solar panel?" Well, yeah, if it were really big! In the book I look at the power you use and talk about conservation being key. Another main concern is average windspeed in your area. Then I show equations to figure out how much power to expect. On the average, most people would need about 2 to 10 small home wind turbines ( or 1 to 5 of the 3,000 watt ones) on their property to become energy independent. Remember, it's not how powerful the windmill is, it is all about average wind speed. A 10,000 watt windmill with a 20 foot blade will only produce about 250 watts in 8 mph wind. But in 16 mph wind, it would be 8 times that...or 2,000 watts.
Q: What if I would rather have one big one instead of 10 smaller ones?A: First reason is tower strength. A 7 foot windmill blade set will have a loading of about 86 pounds of force from a 20 mph wind. A 21 foot blade would produce about the same power as 9 smaller windmills (7 foot) but the same wind would push on the tower with 775 pounds of force. And since the generator and tail are bigger, then you are looking at a very strong and expensive tower. It may take a small team just to raise it.
Also, the bigger the blade, the slower it spins. So you will need to gear up the output or use a homemade generator....more complexity.
And, thirdly, if you use a single big generator and it fails for some reason, then you have no backup. Why put all your eggs in one basket.
Isn't it easier to build home wind turbines that you can install by yourself and even build more if needed?
This is an e-book in standard PDF format. Upon successfully purchasing, the link to download the e-book will be shown to you. It is 45 pages long in full color and the download is 3.3 MB in size. It takes about 10 to 15 seconds to download when using cable modem or DSL. It will take about 4 to 5 minutes with dialup. You will need winzip to open the compressed download.
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