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Old 08-20-2014, 08:15 AM
Ctehan Ctehan is offline
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Default Wind Generator Advice for new guy



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Hello there! I'm completely new to the site, and hope I'm asking this in the right place.

I'm putting together a wind generator out of junkyard parts. Do you think it is going to work, or can you advise improvement?
Build materials...
36"x4" PVC blades. Quartered 6" drain pipe.
Ford f150 fan 5 blade hub.
Snowblower toro transmission with 26:1 output. Turns ith 2 Ozs. of force.
Fixed tail fin.
Treadmill PErmanent magnet motor. 120vDc at 15 amps 600rpm
Tested: 13.5v, 11 amps at 500 rpm in drill press
Hopefully 100 blade rpm will yield 2600 rpm
50 amp diode...
Past that, I have no idea what to do.

Think it will work? Advice?
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Old 08-20-2014, 08:19 AM
iowamobile iowamobile is offline
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I have a wind generator and I will never put up another one. Lots of maintenance and doesn't really make all that much power compared to solar panels. Putting one together from junk yard parts will be just that. A junkyard wind generator. Lots of fun but lots of work too!
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Old 08-20-2014, 08:48 AM
Ctehan Ctehan is offline
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Well, that doesn't sound hopeful.
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Old 08-20-2014, 08:52 AM
arleigh arleigh is offline
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I would not discourage you from learning and trying , it'a wide open field to learn from.
Balancing you rig is critical and having a governor to protect it from over speed is important too.
Realize the centrifugal force being generated on the blades as you engineer.
Have breaking system so you can shut it down ,either in really bad wether or hearing a bearing go out ,you want to shut it down before it does serious damage.
My mill is mounted on my shop trailer for a few of reasons,
1. it is a part of my solar charging system, and battery bank
2. being mounted on the trailer, I circumvent county codes requiring permit ,usually they are mounted on the ground requiring a foundation .
3. I have mine rigged so that I can lay it down and service it if and when necessary.
4. a very short run of wire from the mill to the battery bank.
Mine is a Sun Force 600 watt cost about $500. at Frys a few years ago.
The nut the holds the hub they supplied in parts was wrong ,so if you do get a kit assume nothing. be smarter than the manufacturer .
It functions adequately for the wind I have . the beauty is ,it makes power at night when the wind blows and the solar makes the power during the day while there is no wind.
I didn't actually have enough wind to justify the investment years ago , but times are changing .this year i'm getting more wind than in years past so it is paying off more now.
Not had to service it at all it is brushless and comes with a controller.
I have plans to build another ,of a very different configuration, but I thought it important to have one running first, to understand the ups and downs and what kind of investment it will take to make my project better than what I already own.
I would encourage you to start with a battery bank first , something to feed the energy into and be wired to feed the house as you plan .
Plan big not minimalistic. making a box is not much use if you end up making another to replace it , the same with switch panels and other controls, leave room for expansion.
If I had the money I would double my battery bank .
My rule is , If you've only got a cup, that's all your going to cary, even if the moment of opportunity might avail a gallon.
Batteries can be charged with any thing even the grid, so IMO that is the starting point.
I have seen a forum for those building mills , you might want to look around .
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Old 08-20-2014, 09:40 AM
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charliemeyer007 charliemeyer007 is online now
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I think you are off to a great start. If you get very high wind speeds that fixed tail will be an issue. I like the designs that when wind speed is to high the tail flips causing the blades to go out of alignment with the wind.

Use a light oil in the gear box with some good antifriction additive like Prolong or if you can find any ER Energy Release.

Balanced moving parts is always a good thing. Anchor it really well and taller is better for wind power.

Use one of the weather sites to get a wind rose for your location.
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Old 08-20-2014, 10:00 AM
Nutty Old Geezer Nutty Old Geezer is offline
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"36"x4" PVC blades. Quartered 6" drain pipe."

Those won't hold up or be very efficient. They will fracture from the stresses and you won't get good results anyway. Better to do like what was used back in the 1930s-40s. Find a wind mill and tower and make a "windcharger".
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