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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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#41
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On Mon, 19 Jan 2009 05:24:18 -0800, Larry Jaques
wrote: Check out this leading sentence on their "learn about nuclear plants" page (boo!) but then look at the next to last paragraph, where the NRC says that 34 new nuke plants will have apps in by 2010! That's good news. (Caution: this is a heavily biased, alarmist site) http://www.cleanenergy.org/index.php...3&Item id=296 They have not announced what they propose to replace coal & nuclear energy, so how can they be credible ?. Maybe if all the nuts do not use any electricity or coal/oil derived products, then they could be believed as being sincere. Even then, they still have not announced any practical power replacement method. We also have the idiots here in Oz, nuclear power is outlawed by the Federal Govt. and all the nuts are whinging about pollution from coal fired power plants and they also have no practical solution to the problem. Oz is the driest continent, yet millions of cubic metres of water are going to waste in the north but a pipeline has been rejected and a desalination plant built, using heaps of coal & gas fired energy to produce water, with a second plant proposed. Western Oz is so flat that a pipeline from the Ord river or similar would be downhill just about all the way to Perth. Alan |
#43
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![]() John, that's why I posted both the ratings and the actual, annual outputs. That's what the terawatt-hours numbers a actual annual output, in Watt-hours. If you looked at the numbers you noticed that, contrary to what you said, the actual Watt-hour output of the wind generators in the US is 2-1/2 times that of the PPL Susquehanna plant. If you didn't look at the numbers, you're not getting it. The annual energy output relative to the power rating for wind, and for solar, are much lower than for a coal-fired plant or a nuke. But that isn't what I was comparing with the TWh. Are we on the same page here? The big problem with these altenate energy sources is that they are not reliable and most times put out energy when its not needed. At one time they were diverting the energy into big water pumping stations and filling resivoirs at night and then using the elevated water to turn water turbines during the day. Now the main backup systems run on natural gas powered turbines because of their quick startup times. I go buy some windmills about twice a week and they arent always turning. I guess that means the wind isn't blowing, huh? g The nuke plant is always putting steam out of its cooling towers. That sucker nets about 1 million a day. I did a job a couple of months ago that was going to a nuke plant in Florida. That's not to say that wind power is going to replace nukes -- we need a lot more nukes, IMO -- but, even now, with wind power still in its infancy, it replaces 2-1/2 decent-sized nukes in the US. That's not a bad thing. There would have been windmills up a long time ago if they were profitable. They weren't profitable until fairly recently. Now, many of them are. A little bailout money always helps. It looks like GE is the one that is getting the bailout dollars. "It looks like"? Does that mean you have actual data? Nah, I let you look up all the data and get the numbers, and old technique I was exposed to by some prof. They are now in the process of building another plant so Ed can keep his lights on in NJ. I don't think we get any power from PPL. We do, however, have our own nuke at Oyster Creek, which, my utility tells me, supplies 28% of my power. You better tell that to PPL since they are getting the permits and right of ways to run a major power line into NJ. It is ****ing off a lot of local people in the Poconos that are forced to grant easements to PPL. The power isn't for NJ. I checked it out: it's running across NJ and into the NYC grid. PPL and PSE&G are part of the 13-state Eastern interconnection grid that runs all the way out to Illinois. The connection to the NYC grid is one that the DOE identified as a major congestion area in 2006. PPL wants to send power to the grid but the butthead governments in the Poconos, and in 15 butthead towns in north Jersey, are blocking it. Wheb Marcy soutn was built they cut up a lot of property in NY state. I knew one guy that had his property cut in half for no good reason. That line is as crooked as a voting district border. This is what Wes, Larry, and I were talking about. Every pipsqueek town in most states, with a town council of ignorant buttheads, can stop or seriously delay a transmission line. As long as that goes on there is no way the US can have an efficient electical network with long-distance transmission. On top of the butthead towns, there are the butthead states. g The line should be run down an existing right of way like the center median of an interstate or along a railroad track. I guess if they do that though the politicans couldn't prebuy up the property and resell it at a substantial profit like they did with the Delaware Tocks Island national park or the PA turnpike extension. Local government is stupid government, and the more local, the more stupid they are. BTW, I knew the mayor of Berwick, which is the town closest to the PPL nuke -- Lou Biachii. His big accomplishment was teaching the junior-high football team how to chew tobacco. After that, he ran out of intellectual steam. Lou could be the poster boy for stupid local government. I wondered why all the people in Berwick chewed. ![]() Now if Berwick didnt get a good piece of the action like the towns in Jersey that have power plants in their town do, I coulc see why he would oppose it. In PA the local towns dont get much tax benefit from the plant. The thing I like about it is that you can catch fluke (summer flounder) in their cooling stream until the end of October. And the crabs they grow there...well...let's just say you wouldn't want to meet one in a dark alley. d8-) The proposed offshore wind farm in NJ is getting $19 million of state money, which is a drop in the bucket. It's just over $2 per person in the state. Its capacity will be 346 MW, which is more than 50% the size of our Oyster Creek nuke. Not bad for a start. The federal goverment has all types of tax incentives for wind farms. I wonder how long the windmills will hold up in the sal****er enviorment and gale coditions the frequently occur. Maintanece will be a big cost. If you can come up with some specifics relating to the offshore systems planned for NJ, and now for NY, we're all ears. Here is an article that discusses the maintenance problems with wind turbines. It seems that they are already having problems with the gear boxes. They have not developed a failure history on the rest of the elements. On the ocean all the problems of maintance are increased. http://pepei.pennnet.com/display_art...ines-Spinning/ Maybe the fishing around the windmills in the ocean will be good. Fish like to line up along the magnetic field the transmission lines will generate. Maybe it gets them off. ![]() of the lines. John |
#44
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![]() Here is another tidbit on percent of use, output and longevity. http://www.alliantenergy.com/docs/gr...b/p015392.hcsp 20 year life cycle, What is a typical capacity factor for a wind turbine? Because the wind does not blow steadily all the time, a capacity factor of 25 to 40 percent is not uncommon for a wind turbine. For the Cedar Ridge site, capacity factor is estimated to be approximately 30 to 35 percent. Does wind power cost more than power from a fossil-fuel power plant? Why? Even though wind is free, wind power typically costs more than power from a fossil-fuel power plant. The additional costs are in the investment, construction, and maintenance of the wind turbines. read boonedoggle. John |
#45
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I don't know how much energy is consumed manufacturing wind mills
The windmills being installed in Iowa and Minnesota; $1 billion per 62 qty. 9-11 years payback every 5 years a major overhaul. I got this info from a nephew who works for the former NSP (northern states power). I don't know how this cost jives with any others, post in this thread. On Jan 17, 7:01 pm, "Ed Huntress" wrote: "Wes" wrote in message ... Is there someplace that has an analysis of how much energy is put into making, erecting, and commissioning a windmill vs typical energy output. I'm wondering how long it takes to recover the energy used to put it in place. Since wind is a bit variable, we can assume it is somewhere in the wind corridor that T. Boone Pickens was pitching. I know solar cells have a lousy break even point unless the technology has changed drastically. Thanks, Wes Do you need something precise, with documentation, etc.? If so, there are lots of studies, using different methods of measurement. Search on "wind power embedded energy," wind power embodied energy," or "wind power life cycle analysis." I did this a few years ago. At that time photovoltaic was showing a worst-case payback of around 24 years, while wind power showed a payback in 6 months or even less. Just grabbing one from a Google search, without checking it for accuracy, |
#46
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![]() wrote: On Mon, 19 Jan 2009 05:24:18 -0800, Larry Jaques wrote: Check out this leading sentence on their "learn about nuclear plants" page (boo!) but then look at the next to last paragraph, where the NRC says that 34 new nuke plants will have apps in by 2010! That's good news. (Caution: this is a heavily biased, alarmist site) http://www.cleanenergy.org/index.php...3&Item id=296 They have not announced what they propose to replace coal & nuclear energy, so how can they be credible ?. Maybe if all the nuts do not use any electricity or coal/oil derived products, then they could be believed as being sincere. Even then, they still have not announced any practical power replacement method. We also have the idiots here in Oz, nuclear power is outlawed by the Federal Govt. and all the nuts are whinging about pollution from coal fired power plants and they also have no practical solution to the problem. Oz is the driest continent, yet millions of cubic metres of water are going to waste in the north but a pipeline has been rejected and a desalination plant built, using heaps of coal & gas fired energy to produce water, with a second plant proposed. Western Oz is so flat that a pipeline from the Ord river or similar would be downhill just about all the way to Perth. Alan Thats what you get for hanging upside down on the bottom of the earth. ![]() John |
#47
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Posted to rec.crafts.metalworking
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![]() "john" wrote in message news ![]() John, that's why I posted both the ratings and the actual, annual outputs. That's what the terawatt-hours numbers a actual annual output, in Watt-hours. If you looked at the numbers you noticed that, contrary to what you said, the actual Watt-hour output of the wind generators in the US is 2-1/2 times that of the PPL Susquehanna plant. If you didn't look at the numbers, you're not getting it. The annual energy output relative to the power rating for wind, and for solar, are much lower than for a coal-fired plant or a nuke. But that isn't what I was comparing with the TWh. Are we on the same page here? The big problem with these altenate energy sources is that they are not reliable and most times put out energy when its not needed. At one time they were diverting the energy into big water pumping stations and filling resivoirs at night and then using the elevated water to turn water turbines during the day. Now the main backup systems run on natural gas powered turbines because of their quick startup times. The pumped-water storage is still the preferred way to do it, and there are several projects that include a pumped-water load-leveling system. I read further on this and I see that Denmark is not having any problem with load-leveling. They sell the excess power to Norway, and buy back when they're low. The "smart grid" proposals for the US Midwest are expected to operate well with geographic dispersal and with wind supplying up to 50% of total system capacity -- not that they're likely to be built up to that level. I'm getting the feeling that the naysayers are twisting the facts a bit. I go buy some windmills about twice a week and they arent always turning. I guess that means the wind isn't blowing, huh? g The nuke plant is always putting steam out of its cooling towers. That sucker nets about 1 million a day. I did a job a couple of months ago that was going to a nuke plant in Florida. That's not to say that wind power is going to replace nukes -- we need a lot more nukes, IMO -- but, even now, with wind power still in its infancy, it replaces 2-1/2 decent-sized nukes in the US. That's not a bad thing. There would have been windmills up a long time ago if they were profitable. They weren't profitable until fairly recently. Now, many of them are. A little bailout money always helps. It looks like GE is the one that is getting the bailout dollars. "It looks like"? Does that mean you have actual data? Nah, I let you look up all the data and get the numbers, and old technique I was exposed to by some prof. They are now in the process of building another plant so Ed can keep his lights on in NJ. I don't think we get any power from PPL. We do, however, have our own nuke at Oyster Creek, which, my utility tells me, supplies 28% of my power. You better tell that to PPL since they are getting the permits and right of ways to run a major power line into NJ. It is ****ing off a lot of local people in the Poconos that are forced to grant easements to PPL. The power isn't for NJ. I checked it out: it's running across NJ and into the NYC grid. PPL and PSE&G are part of the 13-state Eastern interconnection grid that runs all the way out to Illinois. The connection to the NYC grid is one that the DOE identified as a major congestion area in 2006. PPL wants to send power to the grid but the butthead governments in the Poconos, and in 15 butthead towns in north Jersey, are blocking it. Wheb Marcy soutn was built they cut up a lot of property in NY state. I knew one guy that had his property cut in half for no good reason. That line is as crooked as a voting district border. This is what Wes, Larry, and I were talking about. Every pipsqueek town in most states, with a town council of ignorant buttheads, can stop or seriously delay a transmission line. As long as that goes on there is no way the US can have an efficient electical network with long-distance transmission. On top of the butthead towns, there are the butthead states. g The line should be run down an existing right of way like the center median of an interstate or along a railroad track. PSE&G already owns the rights of way in NJ -- 80 miles of the them. The towns are objecting to them using their own right-of-way. And if the local governments prevail, it just means it will be re-routed through still more towns, which will raise their own objections, and so on, and so on, and so on... I guess if they do that though the politicans couldn't prebuy up the property and resell it at a substantial profit like they did with the Delaware Tocks Island national park or the PA turnpike extension. A lot of people got screwed over Tocks Island, including some of the speculators. My dad worked for one of them, years after the event, and the guy had lost a ton. And my aunt owned a summer home there that she sold directly to the feds. The problem was that the feds offered so little money that most landowners made more by selling to the speculators. Wm. O. Douglas got involved, trying to straighten out the fed policy, but the prices were never what they should have been. It'a nice park, anyway. d8-) Local government is stupid government, and the more local, the more stupid they are. BTW, I knew the mayor of Berwick, which is the town closest to the PPL nuke -- Lou Biachii. His big accomplishment was teaching the junior-high football team how to chew tobacco. After that, he ran out of intellectual steam. Lou could be the poster boy for stupid local government. I wondered why all the people in Berwick chewed. ![]() Lou is a semi-literate who looks, talks, and walks like a mafia leg-breaker. He was my phys-ed teacher. That job taxed his intellectual abilities to the limit. Now if Berwick didnt get a good piece of the action like the towns in Jersey that have power plants in their town do, I coulc see why he would oppose it. In PA the local towns dont get much tax benefit from the plant. I don't know his position about or his relation to the Susquehanna nuke plant. I just know about his general behavior. And Berwick, in my jaundiced opinion and long-ago experience, is not a place that you would expect to handle such a thing very well. The thing I like about it is that you can catch fluke (summer flounder) in their cooling stream until the end of October. And the crabs they grow there...well...let's just say you wouldn't want to meet one in a dark alley. d8-) The proposed offshore wind farm in NJ is getting $19 million of state money, which is a drop in the bucket. It's just over $2 per person in the state. Its capacity will be 346 MW, which is more than 50% the size of our Oyster Creek nuke. Not bad for a start. The federal goverment has all types of tax incentives for wind farms. I wonder how long the windmills will hold up in the sal****er enviorment and gale coditions the frequently occur. Maintanece will be a big cost. If you can come up with some specifics relating to the offshore systems planned for NJ, and now for NY, we're all ears. Here is an article that discusses the maintenance problems with wind turbines. It seems that they are already having problems with the gear boxes. They have not developed a failure history on the rest of the elements. On the ocean all the problems of maintance are increased. http://pepei.pennnet.com/display_art...ines-Spinning/ That's a good one. Thanks, John. So, regular maintenance for a wind turbine is less than that for other types of power generation, but unscheduled repairs remain the wild card because they can be expensive. And the fact that Congress is funding the 1.9 cents/kWh subsidy on a two-year renewal basis is preventing the establishment of an efficient supply chain, which raises costs and make the subsidy necessary. There's a chicken-and-egg, shoot-yourself-in-the-foot situation, eh? Anyway, the economics look like they're positive enough that our growth rate in wind power is running around 25%/year. It must be pretty economic overall, at least with the subsidy. Maybe the fishing around the windmills in the ocean will be good. Fish like to line up along the magnetic field the transmission lines will generate. Maybe it gets them off. ![]() the lines. Eh, I don't fish that far south, anyway. Those turbines, I see, are going to be sited 16 - 20 miles offshore and it's pretty deep out there. I haven't seen what the fishermen's associations have said about it but I doubt if there will any objections. I think the Hudson Canyon runs much farther offshore down around Atlantic City, and that's where the big action is. -- Ed Huntress |
#48
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![]() Eh, I don't fish that far south, anyway. Those turbines, I see, are going to be sited 16 - 20 miles offshore and it's pretty deep out there. I haven't seen what the fishermen's associations have said about it but I doubt if there will any objections. I think the Hudson Canyon runs much farther offshore down around Atlantic City, and that's where the big action is. -- Ed Huntress Most people don't realize how many wrecks are off the NJ shore, including a number of German subs. Some of the German subs even had s lot of silver in their batteries. I think some of the wrecks are from WW 1. Hudson canyon from what I remember, runs into the Baltimore canyon. I know it takes about 4 hours to reach the Hudson canyon when we went there to fish for tuna. I think they want to put the windmils out of sight of land which would be about 15 miles. The canyon is about 100 miles out. It is much closer to the south shore of Long Island. http://www.bigjamaica.com/fishingreport.html I'm temped to go fishing but 18 hrs. on a boat is a bit much. All the fish in the stores is processed in china and it tastes funny. John |
#49
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![]() "john" wrote in message ... Eh, I don't fish that far south, anyway. Those turbines, I see, are going to be sited 16 - 20 miles offshore and it's pretty deep out there. I haven't seen what the fishermen's associations have said about it but I doubt if there will any objections. I think the Hudson Canyon runs much farther offshore down around Atlantic City, and that's where the big action is. -- Ed Huntress Most people don't realize how many wrecks are off the NJ shore, including a number of German subs. Some of the German subs even had s lot of silver in their batteries. I think some of the wrecks are from WW 1. When I was a little kid we'd take binoculars to the Jersey shore to look for German sub periscopes. We didn't realize the war had been over for ten years. d8-) Hudson canyon from what I remember, runs into the Baltimore canyon. I know it takes about 4 hours to reach the Hudson canyon when we went there to fish for tuna. I think they want to put the windmils out of sight of land which would be about 15 miles. The canyon is about 100 miles out. It is much closer to the south shore of Long Island. I should have said Baltimore Canyon. I think they start to fish around 30 miles out there, but that may just be for bonito. I suspect tuna are farther out. We used to fish the Hudson Canyon up here in north Jersey, but that was an overnight trip and you really have to be into it. My uncle's boat (42') was designed and built specifically for canyon fishing. I'm glad I didn't have to pull the 1,200 feet of anchor line. g -- Ed Huntress |
#50
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![]() Ed Huntress wrote: "john" wrote in message ... Eh, I don't fish that far south, anyway. Those turbines, I see, are going to be sited 16 - 20 miles offshore and it's pretty deep out there. I haven't seen what the fishermen's associations have said about it but I doubt if there will any objections. I think the Hudson Canyon runs much farther offshore down around Atlantic City, and that's where the big action is. -- Ed Huntress Most people don't realize how many wrecks are off the NJ shore, including a number of German subs. Some of the German subs even had s lot of silver in their batteries. I think some of the wrecks are from WW 1. When I was a little kid we'd take binoculars to the Jersey shore to look for German sub periscopes. We didn't realize the war had been over for ten years. d8-) Hudson canyon from what I remember, runs into the Baltimore canyon. I know it takes about 4 hours to reach the Hudson canyon when we went there to fish for tuna. I think they want to put the windmils out of sight of land which would be about 15 miles. The canyon is about 100 miles out. It is much closer to the south shore of Long Island. I should have said Baltimore Canyon. I think they start to fish around 30 miles out there, but that may just be for bonito. I suspect tuna are farther out. We used to fish the Hudson Canyon up here in north Jersey, but that was an overnight trip and you really have to be into it. My uncle's boat (42') was designed and built specifically for canyon fishing. I'm glad I didn't have to pull the 1,200 feet of anchor line. g -- Ed Huntress They pull up miles of lobster traps out there on a continious line with a bouy marking the ends, at 1200 ft. depth now thats a rough job. I did the overnight tuna trip three or four times, and after its over I still have a three hour drive home. IT sort of takes a lot of the fun out of it. While I had my boat on the shore the fishing was real bad. It got a lot better after I sold it. John |
#51
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On Sat, 17 Jan 2009 18:24:49 -0500, Wes wrote:
Is there someplace that has an analysis of how much energy is put into making, erecting, and commissioning a windmill vs typical energy output. I'm wondering how long it takes to recover the energy used to put it in place. Since wind is a bit variable, we can assume it is somewhere in the wind corridor that T. Boone Pickens was pitching. I know solar cells have a lousy break even point unless the technology has changed drastically. Thanks, Wes Hi Wes, Being as this is a do-it-yourself kind of newsgroup I checked out http://www.otherpower.com/otherpower_wind.shtml. It has a fair bit of information on constructing a windmill at home, including some discussion of a 2 kW unit that should, if one is connected to the grid, reduce electric bills to roughly zero. Cost of construction is variable but there will be at least a few hundred dollars in magnets even if one is able to scrounge most of the other hardware. I'd probably have had to tuck about $2-3000 into the project to get it finished. However... there were two rather large problems for me personally in carrying out such a project, which is why I didn't go for it. First, my location in western KY is lousy for wind power. Second, erecting a 50 foot item in my backyard might get some notice from the neighbors. Third, that tower would be the tallest object for at least several hundred yards around. Lightning is not your friend when it's close by... Anyway, my two cents on the topic. I'd love to give it a shot if we lived someplace where wind was a viable option. Best -- Terry |
#52
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![]() "john" wrote in message ... snip They pull up miles of lobster traps out there on a continious line with a bouy marking the ends, at 1200 ft. depth now thats a rough job. I did the overnight tuna trip three or four times, and after its over I still have a three hour drive home. IT sort of takes a lot of the fun out of it. While I had my boat on the shore the fishing was real bad. It got a lot better after I sold it. John That makes an awfully long day, especially after your sea legs have been working all day long. I don't have a boat now, nor access to anyone else's except for a friend's Black Watch out at Montauk, and that's too far for a day trip. Now I fish for blues and sometimes stripers from the beach and the jetties. I can get to Keyport in 20 minutes and fish for a while in the early morning before work, or even wet a line on a long lunch hour. I find it much more enjoyable these days. I built a 10', two-handed flyrod to try for those false albacore this year, if they come back into Raritan Bay. -- Ed Huntress |
#53
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Wind power solutions
With the world’s ever-increasing demand of power being more than its supply, it is about time that we take concrete steps to save power. Apart from being conscious about the usage of power and water at home, one can employ pollution-free and cost-effective power solutions at our homes. Solar power solutions and wind power solutions are the two of the most efficient solutions that can replace the conventional power solutions employed at our homes. These solutions can help you combat power outages, reduce your electricity bills, and also help the environment. This article will explore the cost-effective wind power solution that you can employ at home. Wind power solutions work best when the following conditions are met: • You have a house or farmhouse spread over a big area. Typically, wind power solutions are employed in areas that spread over an acre. • The average wind speed in your area is around 11 miles per hour. If you stay in a place that has little wind flow, your system will not work. Consult an expert before installing the wind power solution at home. • You need to draw water from external sources. You can install a wind power system even when you do not need to draw water from outside. However, if you need to draw water from outside on a regular basis, a wind power system offers the best solution. • Your house needs a lot of uninterrupted power supply. Combating those power outages is easy with the pollution-free wind power systems. You need no longer worry about a break in your work because of a power uncertainty. A typical wind power system comprises of a tower and five blades to churn out wind energy. The length of the wind tower varies depending on the location of your house. You may need a longer tower if you are in low-wind zone; you can work with a shorter tower if you live by the beach. Using a wind generator, this wind energy can be converted into useful electrical energy to be employed at home for running various electrical appliances. You can even store the power generated for later use, making wind generators more efficient than convention power systems. If you are confused with the wind power jargon, here’s a piece of information for you. The terms, wind mills, wind turbines, and wind generators are used to refer to the same machine. Make power at home with solar and wind energy to eliminate your power bill. Get our complete guide at http://www.EarthEnergyToday.com |
#54
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You guys are going about it all wrong.
You are all trying to generate electricity from wind power. Then use the electricity to drive stuff. I think that's very ineffective. Use the wind to drive stuff directly. Like this... http://www.travelistic.com/video/sho...Columbia-River Clean, efficient, environmentally sound. And the girls dress a lot better! |
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