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17' Mahogany runabout just completed
Hi All,
Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. Tom in Oregon |
17' Mahogany runabout just completed
On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D"
wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? |
17' Mahogany runabout just completed
Delburt D wrote:
Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. Tom in Oregon Beautiful boat. |
17' Mahogany runabout just completed
actually she will run on plane for about ten minutes at a time. The
limiting factor right now is the controllers we started with but we are in the process of upgrading both the controllers and battery pack we had her out on Hagg lake west of Portland for about four hours and we were running on plane for about 40 minutes of that time and the balance running at cocktail cruise speed. While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. Tom "Short Wave Sportfishing" wrote in message ... On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D" wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? |
17' Mahogany runabout just completed
On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D"
wrote: actually she will run on plane for about ten minutes at a time. The limiting factor right now is the controllers we started with but we are in the process of upgrading both the controllers and battery pack we had her out on Hagg lake west of Portland for about four hours and we were running on plane for about 40 minutes of that time and the balance running at cocktail cruise speed. While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. Tom I apologize - I was being a smart ass. That is quite an accomplishment. Congratulations. Still think it would run better with a couple of Rolls Royce twelve cylinder Merlins though. :) |
17' Mahogany runabout just completed
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17' Mahogany runabout just completed
Actually your response is the same as we have been getting ever since we
conceived the project. Now we are having the expressed pleasure of saying " Naner naner naner" G "Short Wave Sportfishing" wrote in message ... On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D" wrote: actually she will run on plane for about ten minutes at a time. The limiting factor right now is the controllers we started with but we are in the process of upgrading both the controllers and battery pack we had her out on Hagg lake west of Portland for about four hours and we were running on plane for about 40 minutes of that time and the balance running at cocktail cruise speed. While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. Tom I apologize - I was being a smart ass. That is quite an accomplishment. Congratulations. Still think it would run better with a couple of Rolls Royce twelve cylinder Merlins though. :) |
17' Mahogany runabout just completed
I have not seen that vessel. I have perused the Stancraft site though.
They have a wood hull with twin V10 Vipers! That is a much bigger boat than ours. We are also much less expensive than those monsters. Our twin screw boat is $120K with a trailer! Are you familiar with any of the electric drag cars? The white zombie uses the same motors as we do except they are dumping everything they have into the motors in less than 15 seconds. We want longer more gentle performance. If you go to fast in a boat you spill your cocktailsG wrote in message ... On Tue, 27 Nov 2007 21:13:40 GMT, Short Wave Sportfishing wrote: On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D" wrote: actually she will run on plane for about ten minutes at a time. The limiting factor right now is the controllers we started with but we are in the process of upgrading both the controllers and battery pack we had her out on Hagg lake west of Portland for about four hours and we were running on plane for about 40 minutes of that time and the balance running at cocktail cruise speed. While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. Tom I apologize - I was being a smart ass. That is quite an accomplishment. Congratulations. Still think it would run better with a couple of Rolls Royce twelve cylinder Merlins though. :) Hey Tom, have you ever seen that monster custom built wooden hotrod powerboat at Harbor One Marina? I think the name is Outrageous, which is appropriate. My best guess is around a million bucks. That might be low. It's not my type of boat, but it's breath taking just the same. About 40 feet of highly polished and tricked out perfection. |
17' Mahogany runabout just completed
On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D"
wrote: While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. You need a good audio system though to play simulated engine noise. That was part of the charm with those boats. |
17' Mahogany runabout just completed
On Tue, 27 Nov 2007 21:13:40 GMT, Short Wave Sportfishing
wrote: Still think it would run better with a couple of Rolls Royce twelve cylinder Merlins though. :) And you could leave out the high powered audio system with the engine noise sound effects. :-) |
17' Mahogany runabout just completed
"Wayne.B" wrote in message ... On Tue, 27 Nov 2007 21:13:40 GMT, Short Wave Sportfishing wrote: Still think it would run better with a couple of Rolls Royce twelve cylinder Merlins though. :) And you could leave out the high powered audio system with the engine noise sound effects. :-) We have already discussed delivering every boat with a sound effects CD. Everything from a deep throated V8 to a Vespa pppppppppppppp.G |
17' Mahogany runabout just completed
"Wayne.B" wrote in message ... On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D" wrote: While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. You need a good audio system though to play simulated engine noise. That was part of the charm with those boats. This is very true and I am a old hand at the muscle cars and deep exhaust. However our primary market for these boats is the many many lakes that are going no gas, people or electric power only. Besides I have to tell you how nice it is to be hull speed cruising with the wind from your back and not smelling any exhaust fumes at all! We had the boat at the Port Townsend Wood boat show this year and we had many people wanting to know if we would drop a V8 in her. The next day I brought a quart can of V8 vegetable juice. You should have seen the response of the first guy I told we had one in thereG |
17' Mahogany runabout just completed
"Delburt D" wrote in message news:s_13j.17764$ht1.5986@trndny01... Actually your response is the same as we have been getting ever since we conceived the project. Now we are having the expressed pleasure of saying " Naner naner naner" G "Short Wave Sportfishing" wrote in message ... On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D" wrote: actually she will run on plane for about ten minutes at a time. The limiting factor right now is the controllers we started with but we are in the process of upgrading both the controllers and battery pack we had her out on Hagg lake west of Portland for about four hours and we were running on plane for about 40 minutes of that time and the balance running at cocktail cruise speed. While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. Tom I apologize - I was being a smart ass. That is quite an accomplishment. Congratulations. Still think it would run better with a couple of Rolls Royce twelve cylinder Merlins though. :) You may take some of the Duffy market in SoCal, etc. Look cool while doing a harbor cruise. |
17' Mahogany runabout just completed
"Delburt D" wrote
Besides I have to tell you how nice it is to be hull speed cruising with the wind from your back and not smelling any exhaust fumes at all! Do you have any under-the-hood photos? (Didn't see any on the web site.) |
17' Mahogany runabout just completed
On Nov 27, 10:30 am, Short Wave Sportfishing
wrote: On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D" wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? Leave it to you to try and **** on anything that you haven't done or tried or tasted, or anything.... You probably don't know it, because you've lived your whole life not liking anything but the mundane, but there are other things out there that are cool as hell that you just haven't either had the foresight to try or the balls..... |
17' Mahogany runabout just completed
On Wed, 28 Nov 2007 02:03:28 GMT, "Delburt D"
wrote: "Wayne.B" wrote in message .. . On Tue, 27 Nov 2007 20:39:34 GMT, "Delburt D" wrote: While the performance is limited at this time we feel we have a niche market that is unfulfilled at this time. She really runs better than you would think. You need a good audio system though to play simulated engine noise. That was part of the charm with those boats. This is very true and I am a old hand at the muscle cars and deep exhaust. However our primary market for these boats is the many many lakes that are going no gas, people or electric power only. Besides I have to tell you how nice it is to be hull speed cruising with the wind from your back and not smelling any exhaust fumes at all! We had the boat at the Port Townsend Wood boat show this year and we had many people wanting to know if we would drop a V8 in her. The next day I brought a quart can of V8 vegetable juice. You should have seen the response of the first guy I told we had one in thereG Shoulda had a V8. That was pretty funny. |
17' Mahogany runabout just completed
On Nov 28, 1:36 am, wrote:
On Nov 27, 10:30 am, Short Wave Sportfishing wrote: On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D" wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? Leave it to you to try and **** on anything that you haven't done or tried or tasted, or anything.... You probably don't know it, because you've lived your whole life not liking anything but the mundane, but there are other things out there that are cool as hell that you just haven't either had the foresight to try or the balls..... Hey, the guy is up in here spamming our site, hoping to sell boats, I think we have been kind... |
17' Mahogany runabout just completed
On Nov 28, 9:24 am, wrote:
On Nov 28, 1:36 am, wrote: On Nov 27, 10:30 am, Short Wave Sportfishing wrote: On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D" wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? Leave it to you to try and **** on anything that you haven't done or tried or tasted, or anything.... You probably don't know it, because you've lived your whole life not liking anything but the mundane, but there are other things out there that are cool as hell that you just haven't either had the foresight to try or the balls..... Hey, the guy is up in here spamming our site, hoping to sell boats, I think we have been kind...- Hide quoted text - - Show quoted text - I should not have said "our" site, honest mistake... |
17' Mahogany runabout just completed
wrote:
On Wed, 28 Nov 2007 06:44:49 -0800 (PST), wrote: On Nov 28, 9:24 am, wrote: On Nov 28, 1:36 am, wrote: On Nov 27, 10:30 am, Short Wave Sportfishing wrote: On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D" wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? Leave it to you to try and **** on anything that you haven't done or tried or tasted, or anything.... You probably don't know it, because you've lived your whole life not liking anything but the mundane, but there are other things out there that are cool as hell that you just haven't either had the foresight to try or the balls..... Hey, the guy is up in here spamming our site, hoping to sell boats, I think we have been kind...- Hide quoted text - - Show quoted text - I should not have said "our" site, honest mistake... It's not a "site" either. It's a usenet newsgroup. The guy is trying to sell boats? In a boating newsgroup? The horror of it. Maybe he should retain a magazine advertorial writer and get a "great review" written? |
17' Mahogany runabout just completed
Right now the motor compartment is very much in the prototype mode. I have
not had an opportunity to dress up the wiring. So we decided not to release any detail photo's just yet. At the shows we have been to I always put a disclaimer explaining our lack of neatness at this point. "Ernest Scribbler" wrote in message . .. "Delburt D" wrote Besides I have to tell you how nice it is to be hull speed cruising with the wind from your back and not smelling any exhaust fumes at all! Do you have any under-the-hood photos? (Didn't see any on the web site.) |
17' Mahogany runabout just completed
"HK" wrote in message . .. wrote: On Wed, 28 Nov 2007 06:44:49 -0800 (PST), wrote: On Nov 28, 9:24 am, wrote: On Nov 28, 1:36 am, wrote: On Nov 27, 10:30 am, Short Wave Sportfishing wrote: On Tue, 27 Nov 2007 17:46:48 GMT, "Delburt D" wrote: Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. For how long - 20 seconds? Leave it to you to try and **** on anything that you haven't done or tried or tasted, or anything.... You probably don't know it, because you've lived your whole life not liking anything but the mundane, but there are other things out there that are cool as hell that you just haven't either had the foresight to try or the balls..... Hey, the guy is up in here spamming our site, hoping to sell boats, I think we have been kind...- Hide quoted text - - Show quoted text - I should not have said "our" site, honest mistake... It's not a "site" either. It's a usenet newsgroup. The guy is trying to sell boats? In a boating newsgroup? The horror of it. Maybe he should retain a magazine advertorial writer and get a "great review" written? What me try to sell boats? Honestly I just thought you guys might like to see a new boat the style of which has not been built for decades. I am open to discuss construction techniques and such in this forum. By the way, anyone interested in buying one of these? G Tom |
17' Mahogany runabout just completed
"Delburt D" wrote in message news:cKY2j.22999$701.2470@trndny08... Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. Tom in Oregon Too bad you're so far from the Muskoka region of Ontario. Three beautiful connected lakes with many wealthy American and a few 'comfortable Canadian cottagers. It would be an ideal place to run one around for a few days to get some interest flowing. |
17' Mahogany runabout just completed
On Wed, 28 Nov 2007 15:46:59 GMT, "Delburt D"
wrote: I am open to discuss construction techniques and such in this forum. I am curious about one thing - did you build this using cold mold techniques? By the way, anyone interested in buying one of these? G I'm not that's for sure. Although if you could transfer that drive technology to a 23' CC that will do 30 mph on extended runs - like say for eight hours - I'd be all over it. :) |
17' Mahogany runabout just completed
"Delburt D" wrote in message news:T3g3j.22461$rg1.12900@trndny04... By the way, anyone interested in buying one of these? G Tom Any plans to sell one with a real motor? |
17' Mahogany runabout just completed
On Nov 28, 3:01 pm, "BillP" wrote:
"Delburt D" wrote in message news:T3g3j.22461$rg1.12900@trndny04... By the way, anyone interested in buying one of these? G Tom Any plans to sell one with a real motor? He sells them with motors! I think you want to ask if he will sell one with an "engine" ;) |
17' Mahogany runabout just completed
"Short Wave Sportfishing" wrote in message ... On Wed, 28 Nov 2007 15:46:59 GMT, "Delburt D" wrote: I am open to discuss construction techniques and such in this forum. I am curious about one thing - did you build this using cold mold techniques? Actually this boat is a traditional plank on frame construction. We did incorporate a ply/ plank bottom to reduce maintanance issues. But other than that it is built using traditional methods. I did improve on the deck to hull construction. CC used the margin plank/beam and butted the side frames and deck frames into that. I married the deck frames directly to the side frames and treated the margin planks like planks. Much thinner and lighter but still very strong. We used a gel epoxy throughout the boat along with about 7000 silicon brone boat screws. While we did not have to steam any of the planks or other components we did utilize very hot water baths for 20 minutes for the more agressive bends. By the way, anyone interested in buying one of these? G I'm not that's for sure. Although if you could transfer that drive technology to a 23' CC that will do 30 mph on extended runs - like say for eight hours - I'd be all over it. :) Just for the record, we are using a 15000 watt battery pack that weighs 828 lbs. Add to that the battery cable, 2/0 welding cable, the charger, this is a plug in, Controllers etc. With battery technology what it is today we are lucky to push a nice little light weight hull like ours as much as we can. The future however is looking brighter for much better batteries with higher capacity and much less weight. Still I would venture a guess that a 23' CC would probably weigh 3500 4000 lbs? Our baby weighs in at a mere 2200 without passengers. I used a monocoque construction which enabled me to use much smaller scantlings through out the boat. She was designed for this application. For your application if you want to go green, bio-diesel then you have a real stink pot G Tom |
17' Mahogany runabout just completed
"BillP" wrote in message news:hOj3j.23022$ch.16408@trnddc03... "Delburt D" wrote in message news:T3g3j.22461$rg1.12900@trndny04... By the way, anyone interested in buying one of these? G Tom Any plans to sell one with a real motor? We have had a lot of people ask that. It all depends on how many electric boats we sell vs. produce. If we can build more boats than we sell electrics we have tossed that around. One possibility is to sell raw complete hulls for others to complete in what ever manner they want. But it is too soon to make those decisions yet. |
17' Mahogany runabout just completed
"Don White" wrote in message ... "Delburt D" wrote in message news:cKY2j.22999$701.2470@trndny08... Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. Tom in Oregon Too bad you're so far from the Muskoka region of Ontario. Three beautiful connected lakes with many wealthy American and a few 'comfortable Canadian cottagers. It would be an ideal place to run one around for a few days to get some interest flowing. We are targeting the western U.S. for the immediate future. However we have been told by several people that there is a worldwide market for these boats. We had her up at the Port Townsend Wood Boat show in September and people from Austria, Germany and France all expressed the possibilities of the European market. Our plan is to be building a hundred boats a year in four to five years. What are the names of those lakes? Tom |
17' Mahogany runabout just completed
"Delburt D" wrote in message news:BSn3j.23177$rg1.12926@trndny04... "Don White" wrote in message ... "Delburt D" wrote in message news:cKY2j.22999$701.2470@trndny08... Hi All, Check out our website. www.edison-marine.com This is an electric powered boat that really performs. We have achieved speeds of over 30 MPH to date. Tom in Oregon Too bad you're so far from the Muskoka region of Ontario. Three beautiful connected lakes with many wealthy American and a few 'comfortable Canadian cottagers. It would be an ideal place to run one around for a few days to get some interest flowing. We are targeting the western U.S. for the immediate future. However we have been told by several people that there is a worldwide market for these boats. We had her up at the Port Townsend Wood Boat show in September and people from Austria, Germany and France all expressed the possibilities of the European market. Our plan is to be building a hundred boats a year in four to five years. What are the names of those lakes? Tom Lake Muskoka to the south (north of Toronto) Rousseau in the middle (where I attended a sailboat rendezvous in August) Lake Joseph to the north http://www.traveltomuskoka.com/muskoka.htm Real cottage country to central Canada Your market would be very limited in my area (Nova Scotia) due to low population, and mostly coastal boating on the North Atlantic. |
17' Mahogany runabout just completed
"Delburt D" wrote in message news:ILn3j.15376$B21.15016@trndny07... Just for the record, we are using a 15000 watt battery pack that weighs 828 lbs. Add to that the battery cable, 2/0 welding cable, the charger, this is a plug in, Controllers etc. With battery technology what it is today we are lucky to push a nice little light weight hull like ours as much as we can. The future however is looking brighter for much better batteries with higher capacity and much less weight. Where is the high capacity battery technology heading? The last major advancement I am aware of was the development of lithium ion technology but you don't see many of those in really big battery applications. Lithium can also be a bit dicy in terms of handling (or getting wet) if I recall correctly. Seems like we are still stuck in the lead/acid age, either in wet cell or AGM configurations despite many years of forecasts predicting major technological breakthroughs in battery construction. Eisboch |
17' Mahogany runabout just completed
On Nov 29, 2:24 am, "Eisboch" wrote:
"Delburt D" wrote in message news:ILn3j.15376$B21.15016@trndny07... Just for the record, we are using a 15000 watt battery pack that weighs 828 lbs. Add to that the battery cable, 2/0 welding cable, the charger, this is a plug in, Controllers etc. With battery technology what it is today we are lucky to push a nice little light weight hull like ours as much as we can. The future however is looking brighter for much better batteries with higher capacity and much less weight. Where is the high capacity battery technology heading? The last major advancement I am aware of was the development of lithium ion technology but you don't see many of those in really big battery applications. Lithium can also be a bit dicy in terms of handling (or getting wet) if I recall correctly. Seems like we are still stuck in the lead/acid age, either in wet cell or AGM configurations despite many years of forecasts predicting major technological breakthroughs in battery construction. Eisboch My little mahogany skiffs with an 8 horse will make a smaller carbon footprint than the electric plants used to charge these things, hopefully when I come here selling them in spring, I get such a warm reception...;) |
17' Mahogany runabout just completed
"Eisboch" wrote in message ... "Delburt D" wrote in message news:ILn3j.15376$B21.15016@trndny07... Just for the record, we are using a 15000 watt battery pack that weighs 828 lbs. Add to that the battery cable, 2/0 welding cable, the charger, this is a plug in, Controllers etc. With battery technology what it is today we are lucky to push a nice little light weight hull like ours as much as we can. The future however is looking brighter for much better batteries with higher capacity and much less weight. Where is the high capacity battery technology heading? The last major advancement I am aware of was the development of lithium ion technology but you don't see many of those in really big battery applications. Lithium can also be a bit dicy in terms of handling (or getting wet) if I recall correctly. Seems like we are still stuck in the lead/acid age, either in wet cell or AGM configurations despite many years of forecasts predicting major technological breakthroughs in battery construction. Eisboch Excellent Question! Actually there are several new advancements in Lithium Ion technology. There is a company producing a nano based lithium Ion battery that is half the weight of lead acid and can be charged and discharged in six minute cycles. The batteries are quite expensive right now but they are in production now. These are litteraly bullet proof. The developers have run extreme punishment testing and the only thing that happens is the batteries stop functioning. You would expect this to happen if you shove a metal rod through the caseG There are also Lithium Ion Phosphate batteries that are much lighter and also have no issue with thermal runaway. Large battery packs require battery management systems that control the charge of each cell. Overcharging is the enemy of all batteries. Some of the new battery systems have microprocessors built in that communicate with the main module controlling the overall charge state of the entire bank. There is also a company developing a super capacitor. We have been told by the developer that he will be able to give us 15KW in a 100 lb package down the road. While being a bit more expensive initially this will be a boon to our boat, giving us the ability to either extend the range or performance per charge. Now all that being said. The charge rate of any battery system is limited by the source. A typical dryer outlet , 240V @ 50A equals 12KW. If you have a 60KW pack it will take about five hours to charge regardless of the batteries being charged. These developments are what made us decide to get into this market now. We have plenty of potential customers out there that can use the performance level we now have and as the batteries get better our market will grow. All of the cells I have talked about are either in ramp up production or prototype production showing good success in both areas. Tom |
17' Mahogany runabout just completed
wrote in message ... On Nov 29, 2:24 am, "Eisboch" wrote: "Delburt D" wrote in message news:ILn3j.15376$B21.15016@trndny07... Just for the record, we are using a 15000 watt battery pack that weighs 828 lbs. Add to that the battery cable, 2/0 welding cable, the charger, this is a plug in, Controllers etc. With battery technology what it is today we are lucky to push a nice little light weight hull like ours as much as we can. The future however is looking brighter for much better batteries with higher capacity and much less weight. Where is the high capacity battery technology heading? The last major advancement I am aware of was the development of lithium ion technology but you don't see many of those in really big battery applications. Lithium can also be a bit dicy in terms of handling (or getting wet) if I recall correctly. Seems like we are still stuck in the lead/acid age, either in wet cell or AGM configurations despite many years of forecasts predicting major technological breakthroughs in battery construction. Eisboch My little mahogany skiffs with an 8 horse will make a smaller carbon footprint than the electric plants used to charge these things, hopefully when I come here selling them in spring, I get such a warm reception...;) While we are looking at 15000 watt hours of power it still only takes $1.50 , ( ref $.10 / KW ) to fully charge the packs as is. Compare to $150 to fill a 50 gal gas tank. I know we are talking a difference in performance levels but you can still be out on the lake all day and not only make a much smaller carbon foot print but also NO Carbon Monxide or burned oil residue or any of the many other compounds created by burning gasoline in an internal combustion engine. Tom |
17' Mahogany runabout just completed
"Delburt D" wrote in message news:MgC3j.24064$rg1.16072@trndny04... "Eisboch" wrote in message ... "Delburt D" wrote in message news:ILn3j.15376$B21.15016@trndny07... Where is the high capacity battery technology heading? The last major advancement I am aware of was the development of lithium ion technology but you don't see many of those in really big battery applications. Lithium can also be a bit dicy in terms of handling (or getting wet) if I recall correctly. Seems like we are still stuck in the lead/acid age, either in wet cell or AGM configurations despite many years of forecasts predicting major technological breakthroughs in battery construction. Eisboch Excellent Question! Actually there are several new advancements in Lithium Ion technology. There is a company producing a nano based lithium Ion battery that is half the weight of lead acid and can be charged and discharged in six minute cycles. The batteries are quite expensive right now but they are in production now. These are litteraly bullet proof. The developers have run extreme punishment testing and the only thing that happens is the batteries stop functioning. You would expect this to happen if you shove a metal rod through the caseG snipped for brevity Excellent answer! Thanks. Eisboch |
17' Mahogany runabout just completed
On Thu, 29 Nov 2007 17:02:36 GMT, "Delburt D"
wrote: "Eisboch" wrote in message m... "Delburt D" wrote in message news:ILn3j.15376$B21.15016@trndny07... Just for the record, we are using a 15000 watt battery pack that weighs 828 lbs. Add to that the battery cable, 2/0 welding cable, the charger, this is a plug in, Controllers etc. With battery technology what it is today we are lucky to push a nice little light weight hull like ours as much as we can. The future however is looking brighter for much better batteries with higher capacity and much less weight. Where is the high capacity battery technology heading? The last major advancement I am aware of was the development of lithium ion technology but you don't see many of those in really big battery applications. Lithium can also be a bit dicy in terms of handling (or getting wet) if I recall correctly. Seems like we are still stuck in the lead/acid age, either in wet cell or AGM configurations despite many years of forecasts predicting major technological breakthroughs in battery construction. Eisboch Excellent Question! Actually there are several new advancements in Lithium Ion technology. There is a company producing a nano based lithium Ion battery that is half the weight of lead acid and can be charged and discharged in six minute cycles. The batteries are quite expensive right now but they are in production now. These are litteraly bullet proof. The developers have run extreme punishment testing and the only thing that happens is the batteries stop functioning. You would expect this to happen if you shove a metal rod through the caseG There are also Lithium Ion Phosphate batteries that are much lighter and also have no issue with thermal runaway. Large battery packs require battery management systems that control the charge of each cell. Overcharging is the enemy of all batteries. Some of the new battery systems have microprocessors built in that communicate with the main module controlling the overall charge state of the entire bank. There is also a company developing a super capacitor. We have been told by the developer that he will be able to give us 15KW in a 100 lb package down the road. While being a bit more expensive initially this will be a boon to our boat, giving us the ability to either extend the range or performance per charge. Now all that being said. The charge rate of any battery system is limited by the source. A typical dryer outlet , 240V @ 50A equals 12KW. If you have a 60KW pack it will take about five hours to charge regardless of the batteries being charged. These developments are what made us decide to get into this market now. We have plenty of potential customers out there that can use the performance level we now have and as the batteries get better our market will grow. All of the cells I have talked about are either in ramp up production or prototype production showing good success in both areas. I recall reading maybe 15 years ago about a development in electric motors that made them much more efficient. It may have BS, and I'm in the dark about how electricity works unless I flip the light switch. It was a seemingly simple bit of rewiring, maybe adding an electrical component. Maybe it's actually in use, or maybe it *was* BS. Anybody know if there was a breakthrough in making electric motors more efficient in the recent past? --Vic |
17' Mahogany runabout just completed
On Thu, 29 Nov 2007 12:59:14 -0500, wrote:
Rare earth magnets? Excuse my ignorance on this, but is that like Kryptonite? --Vic |
17' Mahogany runabout just completed
wrote in message ... On Thu, 29 Nov 2007 12:21:27 -0600, Vic Smith wrote: On Thu, 29 Nov 2007 13:12:52 -0500, wrote: On Thu, 29 Nov 2007 12:05:58 -0600, Vic Smith wrote: On Thu, 29 Nov 2007 12:59:14 -0500, wrote: Rare earth magnets? Excuse my ignorance on this, but is that like Kryptonite? --Vic No. Another big breakthrough in electric motor efficiency is PWM, or "pulse width modulation" used for controlling the speed. In the old days, you slowed down a battery powered motor by using a resistor. PWM slows down the motor without wasting nearly as much energy. It offers no savings at full throttle, but anything below that, it conserves power rather than simply converting it to heat. This was a big deal when they started using it for electric trolling motors about 20 years ago. That may well be what I read about. I was going to mention something about "resistor" or "rectifier" but since I am so unversed on electric components didn't want to muddle it up. I do recall that the use of the innovation went beyond trolling motors, and that it basically applied to all motors, but the article gave emphasis on industrial use because of power cost savings. --Vic It's actually a pretty simple concept. Rather than reducing voltage with a variable resistor to slow the motor, you maintain the voltage, but pulse it on and off very rapidly. You vary the motor speed by varying the duty cycle of the pulses between longer or shorter bursts of power "on" or "off". The motor is pretty dumb and can't tell the difference. Silicon Controled Rectifier or "SCR". Two basic types ... phase angle fired or zero crossing. The zero crossing type generates less EMI and is electrically "quieter". They replaced the old variable resistance "rheostats" for light dimmers and induction motor speed control (such as in ceiling fans, etc.) Going back to Vic's question .... I think it was GE that introduced a super efficient induction motor years ago for use in refrigerator compressors, etc. I don't remember what made them more efficent though. Eisboch |
17' Mahogany runabout just completed
On Thu, 29 Nov 2007 11:53:08 -0600, Vic Smith
wrote: Anybody know if there was a breakthrough in making electric motors more efficient in the recent past Pulse Width Modulation. All the cool trolling motors use it. :) |
17' Mahogany runabout just completed
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