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xactdude

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Reply with quote  #1 
So I'm not seeing a wind section for this, so I'll throw it out here.  Cleaning out my shop I found an old 3500 watt generator stuck under the bench.  Yamaha motor long since gone and a overhaul kit cost more than a new generator if its size, but the generator still put out juice last time i fiddled with it.

Anyone ever made a wind unit out of an old generator like this? I'm thinking maybe a verticle prop system to pull it. i do know it will take some machining as the shafts on these units are tapered.

SolarInterested

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Reply with quote  #2 
You might find ideas at the BIS site
http://www.builditsolar.com/Projects/Wind/wind.htm

Something like this:

http://www.mdpub.com/Wind_Turbine/index.html


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stmbtwle

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Reply with quote  #3 
Considering the speed that engine-driven generators need to turn, and the speed that wind turbines run at, I think you'd need a gear or belt "overdrive" to get the RPM you need. Also if that's an AC "generator" it will want a constant speed, and small wind turbines are anything but. To be honest I don't think trying to convert a gas generator would be worth the effort/expense.
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Willie, Tampa Bay
solardan1959

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Reply with quote  #4 
I've got a motor from one of those small electric motorcycles that I can not remember if it is 12 or 24 volts.  I have seen videos of people using a standard AC or DC motor, attach blades to it to spin it which in turn generates power.  I have often thought of experimenting with it but then the thought passes.  Many people do this to build their own and you can find some pretty good info on line with a quick search.

Dan
stmbtwle

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Reply with quote  #5 
Most any brushed, permanent-magnet electric motor will work, probably a 24v or higher voltage would be best as you wouldn't have to spin it so fast to get 12v.  How much power you'd actually get is a question though.

I built a wind turbine for my sailboat some 30 years ago, using a Hamilton Ferris DC generator.  It made a lot of noise but rarely put out more than a couple amps.   A friend had a bigger one, using the same type generator but a 6' propeller and a 1:2 belt overdrive.  It worked a lot better (cost a lot more, too). 

There are also alternators made for the purpose; low RPM, permanent magnets, and DC output, or you can build your own with instructions on line.

Problem with wind turbines is that unless you're planning on a hurricane, they have to be BIG to capture much wind.  But the bigger they are, the slower they go, and generators want FAST... so you end up building some sort of overdrive to get the RPM.  This of course adds complexity, effort, cost, and friction.   I gave up on 'em long ago and went with PV. 

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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
solardan1959

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Reply with quote  #6 
Many different types of horses in the stable is usually best.

sunny=pv and solar hot air panels
cold and breezy= wind turbines
cold, calm, cloudy= Duluth Minnesota

Dan
Garage_Hermit

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Reply with quote  #7 
hang in there, Dan,  Spring is on the way !  (only 18 more days...)

G_H

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stmbtwle

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Reply with quote  #8 
82F here today... [smile]

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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
solardan1959

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Reply with quote  #9 
26 and sunny here, should be about average but it was much better than normal lately.  We have had good sun for the last week or so so plenty of heat has been generated in the collectors so I was stretching the truth maybe a little. 
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Spring is on the way !
so what, spring here is just another good day of skiing! Spring like conditions, 50ish temps are closer to May generally, which is when the ice finally leaves the lakes.
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