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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#81
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Steel wire carrying twelve volts ?
On Tue, 29 Apr 2008 11:48:36 +1200, grumpyoldhori
wrote: Leon Fisk wrote: How windy is it there? Could you maybe supplement the solar with a small wind generator? You probably wouldn't need anything elaborate for this. Plenty of wind, but like the solar panel it comes back to money, the routers are only NZ $100 now. But, either solar or wind work out at around $800-$1000 with controller and battery. The wires are there and cost nothing. I haven't tried this... If all you are trying to do is charge a 12v battery why not brew up your own wind generator. Maybe a small AC Delco self energizing alternator and your own fan blade. I understand that it doesn't take a whole lot to convert the Delco alternators to self energizing. The toughest part in my mind is coming up with some sort of fan/blade. Even an old bicycle generator set maybe enough to do what you want. See these links for a couple examples: http://store.bicyclerevolution.com/unbicliggens.html http://www.amazon.com/Bell-Generator.../dp/B000AAYBV4 Not sure how long they would hold up though with this kind of use... -- Leon Fisk Grand Rapids MI/Zone 5b Remove no.spam for email |
#82
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Steel wire carrying twelve volts ?
"Leon Fisk" wrote in message ... On Tue, 29 Apr 2008 11:48:36 +1200, grumpyoldhori wrote: Leon Fisk wrote: How windy is it there? Could you maybe supplement the solar with a small wind generator? You probably wouldn't need anything elaborate for this. Plenty of wind, but like the solar panel it comes back to money, the routers are only NZ $100 now. But, either solar or wind work out at around $800-$1000 with controller and battery. The wires are there and cost nothing. I haven't tried this... If all you are trying to do is charge a 12v battery why not brew up your own wind generator. Maybe a small AC Delco self energizing alternator and your own fan blade. I understand that it doesn't take a whole lot to convert the Delco alternators to self energizing. The toughest part in my mind is coming up with some sort of fan/blade. Look up "Savonius rotor" online. For anything less than 25 W or so, it makes more sense than a regular turbine. A good Savonius is only about 12 - 15% efficient but you aren't paying for wind. g And a Savonius doesn't have to be aimed at the wind, so it's one heck of a lot simpler. I built one that used an old permanent-magnet refrigerator fan motor (actually the fan motor from the freezer compartment) for an alternator. The rotor was less than two feet tall and it produced around 8 W in a modest breeze. It was for a kid's science-class demo or I would have made it waterproof. It's easy to do because bearings can be covered easily and don't need seals. -- Ed Huntress |
#83
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Steel wire carrying twelve volts ?
Lot of information about making a wind generator using an AMETEK motor
and PVC fan blades. ebay has lots of AMETEK motors for sale. I would do it in a heart beat but there isn't much wind where I live. Nice thing about wind, it blows even when the sun goes down. You can find plans for controllers on the web also. On Tue, 29 Apr 2008 14:44:45 -0400, Leon Fisk wrote: On Tue, 29 Apr 2008 11:48:36 +1200, grumpyoldhori wrote: Leon Fisk wrote: How windy is it there? Could you maybe supplement the solar with a small wind generator? You probably wouldn't need anything elaborate for this. Plenty of wind, but like the solar panel it comes back to money, the routers are only NZ $100 now. But, either solar or wind work out at around $800-$1000 with controller and battery. The wires are there and cost nothing. I haven't tried this... If all you are trying to do is charge a 12v battery why not brew up your own wind generator. Maybe a small AC Delco self energizing alternator and your own fan blade. I understand that it doesn't take a whole lot to convert the Delco alternators to self energizing. The toughest part in my mind is coming up with some sort of fan/blade. Even an old bicycle generator set maybe enough to do what you want. See these links for a couple examples: http://store.bicyclerevolution.com/unbicliggens.html http://www.amazon.com/Bell-Generator.../dp/B000AAYBV4 Not sure how long they would hold up though with this kind of use... -- Leon Fisk Grand Rapids MI/Zone 5b Remove no.spam for email |
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