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The Ultimate Alternator Project
"JustWaitAFrekinMinute!" wrote in message ... On Nov 13, 7:00 am, "YukonBound" wrote: "I am Tosk" wrote in l-september.org... In article , says... YukonBound wrote: "Gene" wrote in message .. . On Fri, 12 Nov 2010 14:25:30 -0500, "Wilbur Hubbard" wrote: Do you have a USCG Master's license? Do you possess an intimate understanding of the Rules of the Road? I do. I do, too..... and I wouldn't dare own or operate a boat without sufficient insurance coverage. ESPECIALLY, commercially.... I can only assume a few things: One, you don't own a boat large enough to be kept in dry or wet storage. If you did, you'd be required by the marina to carry insurance...or Second, you have no assets and no real concern of liability.... can't squeeze blood from a turnip....or Third, you are so fabulously wealthy that not even an accident and subsequent fuel spill wouldn't faze you....or Fourth, most likely, you are infallible and inviolably lucky..... If I have the right guy... he owns a 27' mustard yellow Coronado sailboat c/w mauve interior that he keeps moored back in a swampy backwater in Florida. He has no fears because no one would bother to sue him for that boat or his postman's pension. Nice job improving the group, dummy! Donnie seems to keep getting a pass... -- Rowdy Mouse Racing - Pain is temporary, Glory is forever! A pass at what? I've was called names half a dozen times yesterday by the group dysfunctional..... and no one says boo about it. Maybe he's one of your aliens................. ~~ snerk ~~- Hide quoted text - - Show quoted text - Quit your crying and join the group... no excuses... Unlike you, I was part of the 'new initiative' right from the get go. You are still acting disruptive. Time for a reality check! |
The Ultimate Alternator Project
On Nov 13, 3:05*am, Bob wrote:
Hello: *To that end we've installed a 2,000 watt inverter and a bank of 8 golf cart batteries with a total capacity of about 1,000 amp-hours. * Peak alternator loads can easily approach 250 amps and average well over half of that. There are some downside issues however: * and fortunately the front pulley on a Detroit 6-71 can accomodate up to three belts. In testing it has put out well over 200 amps while maintaining reasonable temperatures. * Stay tuned for the long term durability reports... * * :-) Most older homes had a 100 amp load center. For the last 30 years a 200 load center (braker panel) is the residential standard. I rewired my home 10 years ago and the union journyman electrition installed a 200 amp panel. The home was 2600 sq ft.. With the greatest respect. Why would you need MORE amps than the common 2600 sq ft home ? Bob It's not about current, it's about power. Power, expressed as watts, is voltage x current. In the case of your home, 120v times 200a = 24,000 watts. In the case of Wayne's boat, it's 12 x 200 = 2400 watts. Huge difference, right? Only 10% of the power available to run the boat as compared to your house. Said another way, it's power that does the work. If you drop the voltage in half, you must double the current to keep power the same. At 12v instead of 120v, you'd need 2000 amps to have the same power availability as that home! And yes, for the sharper electrical eyes among us, I simplified some things like the house is actually 240 single phase, AC vs DC, etc... It's the concept that's important. :- |
The Ultimate Alternator Project
"YukonBound" wrote in message
... "JustWaitAFrekinMinute!" wrote in message ... On Nov 13, 7:00 am, "YukonBound" wrote: "I am Tosk" wrote in l-september.org... In article , says... YukonBound wrote: "Gene" wrote in message .. . On Fri, 12 Nov 2010 14:25:30 -0500, "Wilbur Hubbard" wrote: Do you have a USCG Master's license? Do you possess an intimate understanding of the Rules of the Road? I do. I do, too..... and I wouldn't dare own or operate a boat without sufficient insurance coverage. ESPECIALLY, commercially.... I can only assume a few things: One, you don't own a boat large enough to be kept in dry or wet storage. If you did, you'd be required by the marina to carry insurance...or Second, you have no assets and no real concern of liability.... can't squeeze blood from a turnip....or Third, you are so fabulously wealthy that not even an accident and subsequent fuel spill wouldn't faze you....or Fourth, most likely, you are infallible and inviolably lucky..... If I have the right guy... he owns a 27' mustard yellow Coronado sailboat c/w mauve interior that he keeps moored back in a swampy backwater in Florida. He has no fears because no one would bother to sue him for that boat or his postman's pension. Nice job improving the group, dummy! Donnie seems to keep getting a pass... -- Rowdy Mouse Racing - Pain is temporary, Glory is forever! A pass at what? I've was called names half a dozen times yesterday by the group dysfunctional..... and no one says boo about it. Maybe he's one of your aliens................. ~~ snerk ~~- Hide quoted text - - Show quoted text - Quit your crying and join the group... no excuses... Unlike you, I was part of the 'new initiative' right from the get go. You are still acting disruptive. Time for a reality check! I beg to differ. |
The Ultimate Alternator Project
Nice. but the upper mount pivot bolt shimmed with all those washers
will fatigue and break soon. JR On Fri, 12 Nov 2010 00:05:25 -0500, Wayne.B wrote: Those of you who followed along with the updates from our Caribbean cruise earlier this year, may remember that we experienced some alternator issues along the way. This was disappointing for a number of reasons because we had already spent a fair amount of time, effort and boat bucks trying to find a high output alternator that was also durable. Our goal is to not run the generator at all when under way, and to minimize generator time when anchored. The potential savings on generator fuel and maintenance add up to a big number. To that end we've installed a 2,000 watt inverter and a bank of 8 golf cart batteries with a total capacity of about 1,000 amp-hours. The inverter and battery bank work well together but the batteries eventually need to be recharged, and when underway, the alternator needs to supply inverter amps, recharge amps and onboard house loads like navigation equipment, lights, auto pilot, engine room blowers, etc. Peak alternator loads can easily approach 250 amps and average well over half of that. To make a long story short, no automotive alternator that we've tried has been capable of these loads over a long period of time, even those that have been beefed up with heavy duty components. We burned out a total of 4 over the course of 6 months in the islands. Repair and replacement was problematic to say the least. After consulting with Tim, our cheerful, ever helpful, resident alternator expert on "rec.boats", and a number of other sources, I decided that a fresh approach was needed. Enter a company called Leece-Neville, a division of Prestolite, that has been making heavy duty alternators for a long time. LNs are used all over the world on fire trucks, ambulances, busses, big trucks, heavy duty construction machinery, etc. Their big alternators make everything else look like a toy, weigh over 35 pounds and are priced accordingly. Many of the really big ones are north of $2K at full retail. Thanks to the internet and EBAY however, they are now becoming available at more reasonable prices. I was recently able to buy a unit that had been remanufactured to like new condition for about $400, a bargain compared to some of our previous repair/replace experiences. It is rated at 270 amps continuously at high temperatures, and is designed for fire trucks, ambulances and busses. http://www.prestolite.com/pgs_products/specs.php?item_detail_id=951&item=A0014867JB&produ ct=ALTERNATOR There are some downside issues however: It is designed for a so called J180 mounting bracket; requires multiple drive belts since it can use as much as 6 or 7 horsepower; and is not ignition protected for gasoline engines. Ignition protection is not an issue for our diesels, and fortunately the front pulley on a Detroit 6-71 can accomodate up to three belts. The mounting bracket was problematic however since the existing mount was for a Delco 2 inch foot. In exchange for a sizable boat buck fraction, a local machine shop fabricated a custom made J180 bracket from 1/2 inch cold rolled steel. In combination with some Grade 8 steel mounting hardware and a new adjusting arm, everything is now solidly attached, lined up and looking good with 3 brand new Gates Green Stripe belts installed. In testing it has put out well over 200 amps while maintaining reasonable temperatures. Stay tuned for the long term durability reports... :-) New alternator and bracket prior to installation with a beverage can for size reference: http://img140.imageshack.us/img140/3557/preinstallwithnewbracke.jpg After installation, with new HD belts and adjusting arm. The black detritus in the background is left over from the many previous alternators and belts which gave up their lives in that spot: http://img16.imageshack.us/img16/1462/installedimg0573.jpg Boat, with new alternator well hidden, docked last weekend on the Caloosahatchie River in southwestern Florida: http://img593.imageshack.us/img593/6797/img0567i.jpg |
The Ultimate Alternator Project
On Sat, 13 Nov 2010 11:26:33 -0500, "Ziggy" wrote:
Quit your crying and join the group... no excuses... Unlike you, I was part of the 'new initiative' right from the get go. You are still acting disruptive. Time for a reality check! I beg to differ. Allow me to respectfully suggest that all three of you guys knock it off. It doesn't matter and no one else cares. |
The Ultimate Alternator Project
On Sat, 13 Nov 2010 09:05:41 -0800, JR North
wrote: Nice. but the upper mount pivot bolt shimmed with all those washers will fatigue and break soon. I understand your point and concern. The bolt is 1/2 inch grade 8 steel which is pretty sturdy stuff. The washers have been bonded together to create a rigid spacer. I'm going to get a slightly longer bolt and put a washer and lock nut on the fan side of the adjustment arm. Any other suggestions? |
The Ultimate Alternator Project
On 11/13/10 12:17 PM, Wayne.B wrote:
On Sat, 13 Nov 2010 11:26:33 -0500, wrote: Quit your crying and join the group... no excuses... Unlike you, I was part of the 'new initiative' right from the get go. You are still acting disruptive. Time for a reality check! I beg to differ. Allow me to respectfully suggest that all three of you guys knock it off. It doesn't matter and no one else cares. Hear, hear! |
The Ultimate Alternator Project
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The Ultimate Alternator Project
In article
, Bob wrote: Hello: With the greatest respect. Why would you need MORE amps than the common 2600 sq ft home ? Id think at that point it would make more since to install a dedicated hard wired diesel powered generator. Yours truely, Bob Your an Idiot, Bob.... It is amazing to "Me" that you do NOT seem to recognize Wayne is talking about a 12Vdc system and NOT a 120 Vac system, for the Battery Charging, of the 8 Batteries in the House Bank that is tied to the 2 Kw Inverter.... Maybe you should take a "Redial" Reading Comprehension Course... 200 AMPS @ 12 Vdc is ONLY 2.4 Kw.... not all that much... My question for Wayne is what would be your 12 Vdc Amp load, IF you ran the Inverter at 24 Vdc, and had the LN Alternator running 24 Vdc, charging the House Bank at 24 Vdc. Then powering a separate, much smaller, 12 Vdc Buss from a 24/12 Dc/Dc Converter charging a small Group 27 Battery to supply that Buss? I use this approach at my Remote Cabin here in alaska, and find it is much better to do it this way, rather than deal with very heavy cabling required for 200+ Amp operations. Anything over 1 Kw should be run at 24 Vdc, and anything over 3.5 Kw should be run at either 32 Vdc or 48 Vdc, just to keep the I2R losses under control. -- Bruce in Alaska add path before the @ for email |
The Ultimate Alternator Project
On 11/13/10 5:37 PM, Gene wrote:
On Sat, 13 Nov 2010 10:44:04 -0900, Bruce wrote: In article , wrote: Hello: With the greatest respect. Why would you need MORE amps than the common 2600 sq ft home ? Id think at that point it would make more since to install a dedicated hard wired diesel powered generator. Yours truely, Bob Your an Idiot, Bob.... It is amazing to "Me" that you do NOT seem to recognize Wayne is talking about a 12Vdc system and NOT a 120 Vac system, for the Battery Charging, of the 8 Batteries in the House Bank that is tied to the 2 Kw Inverter.... Maybe you should take a "Redial" Reading Comprehension Course... 200 AMPS @ 12 Vdc is ONLY 2.4 Kw.... not all that much... My question for Wayne is what would be your 12 Vdc Amp load, IF you ran the Inverter at 24 Vdc, and had the LN Alternator running 24 Vdc, charging the House Bank at 24 Vdc. Then powering a separate, much smaller, 12 Vdc Buss from a 24/12 Dc/Dc Converter charging a small Group 27 Battery to supply that Buss? I use this approach at my Remote Cabin here in alaska, and find it is much better to do it this way, rather than deal with very heavy cabling required for 200+ Amp operations. Anything over 1 Kw should be run at 24 Vdc, and anything over 3.5 Kw should be run at either 32 Vdc or 48 Vdc, just to keep the I2R losses under control. Your point is well taken, but apparently, it isn't cost effective to renovate for other than 12V. I'm a neophyte when it comes to boat 'lectricity. It seems Wayne is reluctant to use his generator(s). Is that because of noise? It can't be because of fuel burn, because he has a huge boat that burns a significant amount of fuel at any speed. |
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