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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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#1
Posted to rec.crafts.metalworking
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Tires....help needed on choices
On Sunday, July 2, 2017 at 10:55:12 AM UTC-7, Neon John wrote:
On Sat, 01 Jul 2017 23:05:44 -0700, Gunner Asch wrote: They are sized LT 225/R75/16, 10 ply, load range E Any suggestion as to brand etc etc etc would be greatly appreciated. Ive not had to buy heavy duty tires in decades...so its way the hell outside of my expertise. Gunner, 10 ply tires for a van, even if you load a ton into it? Goodyear Wrangler HT Tire LT225/75R16/10 are $125 a pop at Wally World. I just put a set of 6 Cooper tires that size on my motor home. I'm extremely happy with the ride quality. $145 each mounted and balanced. I liked the set of Coopers I had on my Corvair but wasn't as happy with their longevity. Sorry, Gunner, no heavy-duty tire knowledge from me. Clare will likely have some info. Any idea of how to determine how old a tire is? I figure date of manufacture is marked somewhere on the tire....how do I find it and decode it? Sure. Some brands have the date in plain English on the outer side wall. The rest have a code date on the inner sidewall. Nah. You put those tires on the wrong side of the car, John. Well, unless they were Aussie import tires. http://www.neon-john.com Got any newer pics of that diesel genset? That's cool. What's the weight? http://www.tnduction.com That Roy 1500 has some beefy cooling fins on it. Only half the heat goes into the coil, eh? (Kidding. I know that the heat in the object is created by the eddy currents from the coil.) |
#3
Posted to rec.crafts.metalworking
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Tires....help needed on choices
On Sat, 15 Jul 2017 11:01:29 -0400, Neon John wrote:
On Thu, 13 Jul 2017 13:36:06 -0700 (PDT), wrote: http://www.neon-john.com Got any newer pics of that diesel genset? That's cool. What's the weight? No more pix. I finished the rig, then gave it to a friend of mine. Frankly, it was too noisy for my tastes. I never weighed the thing but it was pretty heavy. I'm 6'7", 260 lbs and it took me a pretty hard lunge to get the hand truck up on its wheels. I thought it might be a heavy bastid, between the cast iron and the copper windings. It was still too loud after moving to the larger muffler? http://www.tnduction.com That Roy 1500 has some beefy cooling fins on it. Only half the heat goes into the coil, eh? (Kidding. I know that the heat in the object is created by the eddy currents from the coil.) I've done calorimetry on the unit. It's about 80% efficient, wall to output. Or was. I found some new SiC transistors that cut the silicon losses to almost nothing. Now the variable speed fan barely comes off idle. Good. Any idea how efficient it is now? The end-of-lifed the microprocessor I used so I made the decision to discontinue sales while I design a whole new unit using an ARM processor. It was time for a redesign anyway, right? I find that I want to change things after the first, and then after about the 12th build, either to change materials, efficiency, or assembly methods. Did you go with a straight chip and build your own board around it, or use a board (Raspberry Pi, Arduino, Pine64, etc.) and build around that? I guess you probably wouldn't need all the display and I/O from the boards and an induction heater wouldn't take much of an instruction set. The housing for this unit is a (knockoff) Pelican case. A real Pelican case would have doubled the cost of the final unit, right? Tons of cooling, connections to the work cables via welding connectors, water resistant and several other upgrades. Bueno bwana. I'm also having custom made neoprene insulated Litz wire manufactured. That will get rid of a LOT of losses compared to welding cables. I had to look up "Litz wire". Better eddy currents, eh? Interesting. Better waterproofing? groan - If ever the Time should come, when vain and aspiring Men shall possess the highest Seats in Government, our Country will stand in Need of its experienced Patriots to prevent its Ruin. -- Samuel Adams |
#4
Posted to rec.crafts.metalworking
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Tires....help needed on choices
On Sat, 15 Jul 2017 13:13:25 -0700, Larry Jaques
wrote: No more pix. I finished the rig, then gave it to a friend of mine. Frankly, it was too noisy for my tastes. I never weighed the thing but it was pretty heavy. I'm 6'7", 260 lbs and it took me a pretty hard lunge to get the hand truck up on its wheels. I thought it might be a heavy bastid, between the cast iron and the copper windings. It was still too loud after moving to the larger muffler? The muffler made the exhaust inaudible over the intake roar. So I got a large air cleaner housing and fitted it with a Hemholtz resonator. Since the engine was constant speed, the resonator knocked almost all the noise. What remained was the power stroke detonations, amplified by the air cooled fins, the roar of the cooling fan and just general noise coming from the crankcase area. I tried jacketing the crankcase with lead sheeting (one of the best noise dampeners there is) and I pressed lead balls between the fins. That left the residual diesel knock and the cooling fan noise which was really loud. I finally wore out working on it and about that time a friend expressed a need for a large construction generator so I gave it to him. Still in use as far as I know. John http://www.tnduction.com That Roy 1500 has some beefy cooling fins on it. Only half the heat goes into the coil, eh? (Kidding. I know that the heat in the object is created by the eddy currents from the coil.) I've done calorimetry on the unit. It's about 80% efficient, wall to output. Or was. I found some new SiC transistors that cut the silicon losses to almost nothing. Now the variable speed fan barely comes off idle. Good. Any idea how efficient it is now? The end-of-lifed the microprocessor I used so I made the decision to discontinue sales while I design a whole new unit using an ARM processor. It was time for a redesign anyway, right? I find that I want to change things after the first, and then after about the 12th build, either to change materials, efficiency, or assembly methods. Did you go with a straight chip and build your own board around it, or use a board (Raspberry Pi, Arduino, Pine64, etc.) and build around that? I guess you probably wouldn't need all the display and I/O from the boards and an induction heater wouldn't take much of an instruction set. The housing for this unit is a (knockoff) Pelican case. A real Pelican case would have doubled the cost of the final unit, right? Tons of cooling, connections to the work cables via welding connectors, water resistant and several other upgrades. Bueno bwana. I'm also having custom made neoprene insulated Litz wire manufactured. That will get rid of a LOT of losses compared to welding cables. I had to look up "Litz wire". Better eddy currents, eh? Interesting. Better waterproofing? groan - If ever the Time should come, when vain and aspiring Men shall possess the highest Seats in Government, our Country will stand in Need of its experienced Patriots to prevent its Ruin. -- Samuel Adams John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#5
Posted to rec.crafts.metalworking
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Tires....help needed on choices
On Sat, 15 Jul 2017 17:38:46 -0400, Neon John wrote:
On Sat, 15 Jul 2017 13:13:25 -0700, Larry Jaques wrote: No more pix. I finished the rig, then gave it to a friend of mine. Frankly, it was too noisy for my tastes. I never weighed the thing but it was pretty heavy. I'm 6'7", 260 lbs and it took me a pretty hard lunge to get the hand truck up on its wheels. I thought it might be a heavy bastid, between the cast iron and the copper windings. It was still too loud after moving to the larger muffler? The muffler made the exhaust inaudible over the intake roar. So I got a large air cleaner housing and fitted it with a Hemholtz resonator. Since the engine was constant speed, the resonator knocked almost all the noise. What remained was the power stroke detonations, amplified by the air cooled fins, the roar of the cooling fan and just general noise coming from the crankcase area. I tried jacketing the crankcase with lead sheeting (one of the best noise dampeners there is) and I pressed lead balls between the fins. That left the residual diesel knock and the cooling fan noise which was really loud. Yeah, you wove in some quiet from every angle, it seems. I finally wore out working on it and about that time a friend expressed a need for a large construction generator so I gave it to him. Still in use as far as I know. Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) - If ever the Time should come, when vain and aspiring Men shall possess the highest Seats in Government, our Country will stand in Need of its experienced Patriots to prevent its Ruin. -- Samuel Adams |
#6
Posted to rec.crafts.metalworking
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Tires....help needed on choices
On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques
wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) Well, he did drive his cube truck down from NY and spend 2 weeks helping me prepare my house for my incoming bride. This involved hauling more than a ton of metal to the scrap metal yard, disposing of over 1000 phonograph records, several truckloads of garbage and the cube van full of "stuff". Then building built-in bookcases and other furniture. I was ill at the time with a paralyzed lung and on oxygen so I mostly watched. (Miraculous robotic surgery fixed that lung so I now breathe almost normally.) So when he said that he'd like to have that generator, I said "Load 'er up!". I think I got a pretty good deal for that gift :-) John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#7
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques
wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) I hate the sound of running machinery. Because up here in the mountains the power goes off for longer than 24 hours about every month, I bought and installed Generac's 10 kW automatic standby generator system. It works perfectly. EXCEPT. It uses a B&S Vanguard twin cylinder air-cooled engine and a 2 pole alternator. That means 3600 RPM roar. Intolerably loud. My interim solution was to buy 4 sheets of pre-fabricated wooden fencing and 4 sheets of foil-backed Styrofoam sheathing and build an open-top enclosure around the unit. I fabricated a duct out of ductboard (compressed fiberglass) to carry the hot exhaust air up and out so the thing would not overheat. That improved things a lot but the thing will still awaken me when it starts at night. Plus it's just a little too small. The automatic transfer switch has 3 levels of load shedding. I have to shed the water heater if the AC starts. So I'm building the ultimate. I have procured a 15kVA foot mount 4 pole military surplus belt driven generator. And I've procured the V6 engine, exhaust and electronics out of a late model Ford pickup truck. I used to consult to Ford on special projects so I was able to get the performance data on the engine and the PCM's source code. The generator is an 1800 RPM affair. The performance data shows that the engine can provide about 25 HP at 1400 RPM. So the generator will be geared up a little. 1400 RPM is barely above idle on this water-cooled and QUIET engine. And the Brake Specific Fuel Consumption on that engine at that speed is phenomenal. I'll convert it over to propane but keep the emission controls. Nothing like being awakened in the middle of the night by the CO alarm going off because the air got heavy and trapped the current generator's exhaust. This engine is fly-by-wire (servo on the throttle plate) so my governor will be the cruise control. I've designed a little microprocessor board that listens to the generator's frequency, multiplies that by a factor to satisfy the PCM's road speed sensor input and a few other things such as detecting power loss and sending a start signal to the PCM. The PCM controls the starter motor, engaging it up to 5 times before locking out. The generator has its own voltage control module. This engine does not use an engine-driven cooling fan. All done by giant pancake fans. Variable speed to boot. So little noise there. The battery will be charged and maintained by a Progressive Dynamics 40 amp Intellipower so no generator noise. The only remaining belt-driven accessory is the water pump. I'm looking at a racing electric pump to replace it. Then there will be only the 60 Hz alternator rotor that is turning. The entire assembly will be housed in a small pre-fab building with louvers to let air in and the radiators mounted over a hole in the other side to exhaust air. I'm going to run 2 radiators in hydraulic series, located one above the other. I hope that with this configuration, natural circulation will circulate the coolant and require minimal pumping. The inside of the building and especially the metal roof will be lined with spun lead as is used to soundproof sound booths. My goal is to have this thing be so quiet that it'll be difficult to hear it run even when nearby. I have a Generac QuietPack RV generator that almost meets that criteria so I think that it will be possible. As the project stands right now, I've done all the procurement and have written some of the code. The engine and generator will be built on a C-channel frame that is partially embedded in the concrete slap. I'm going to fill the concrete with about 300 lbs of #8 lead shot to further help dampen the ringing. My lung problem has rendered me slow and plodding so I figure I have a year to go on this project. I'll be putting progress reports and photos on my blog, http://www.johndearmond.com. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#8
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Sun, 16 Jul 2017 18:31:30 -0400, Neon John wrote:
On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) I hate the sound of running machinery. Because up here in the mountains the power goes off for longer than 24 hours about every month, I bought and installed Generac's 10 kW automatic standby generator system. It works perfectly. EXCEPT. It uses a B&S Vanguard twin cylinder air-cooled engine and a 2 pole alternator. That means 3600 RPM roar. Intolerably loud. My interim solution was to buy 4 sheets of pre-fabricated wooden fencing and 4 sheets of foil-backed Styrofoam sheathing and build an open-top enclosure around the unit. I fabricated a duct out of ductboard (compressed fiberglass) to carry the hot exhaust air up and out so the thing would not overheat. That improved things a lot but the thing will still awaken me when it starts at night. Plus it's just a little too small. The automatic transfer switch has 3 levels of load shedding. I have to shed the water heater if the AC starts. So I'm building the ultimate. I have procured a 15kVA foot mount 4 pole military surplus belt driven generator. And I've procured the V6 engine, exhaust and electronics out of a late model Ford pickup truck. I used to consult to Ford on special projects so I was able to get the performance data on the engine and the PCM's source code. The generator is an 1800 RPM affair. The performance data shows that the engine can provide about 25 HP at 1400 RPM. So the generator will be geared up a little. 1400 RPM is barely above idle on this water-cooled and QUIET engine. And the Brake Specific Fuel Consumption on that engine at that speed is phenomenal. I'll convert it over to propane but keep the emission controls. Nothing like being awakened in the middle of the night by the CO alarm going off because the air got heavy and trapped the current generator's exhaust. This engine is fly-by-wire (servo on the throttle plate) so my governor will be the cruise control. I've designed a little microprocessor board that listens to the generator's frequency, multiplies that by a factor to satisfy the PCM's road speed sensor input and a few other things such as detecting power loss and sending a start signal to the PCM. The PCM controls the starter motor, engaging it up to 5 times before locking out. The generator has its own voltage control module. This engine does not use an engine-driven cooling fan. All done by giant pancake fans. Variable speed to boot. So little noise there. The battery will be charged and maintained by a Progressive Dynamics 40 amp Intellipower so no generator noise. The only remaining belt-driven accessory is the water pump. I'm looking at a racing electric pump to replace it. Then there will be only the 60 Hz alternator rotor that is turning. The entire assembly will be housed in a small pre-fab building with louvers to let air in and the radiators mounted over a hole in the other side to exhaust air. I'm going to run 2 radiators in hydraulic series, located one above the other. I hope that with this configuration, natural circulation will circulate the coolant and require minimal pumping. The inside of the building and especially the metal roof will be lined with spun lead as is used to soundproof sound booths. My goal is to have this thing be so quiet that it'll be difficult to hear it run even when nearby. I have a Generac QuietPack RV generator that almost meets that criteria so I think that it will be possible. As the project stands right now, I've done all the procurement and have written some of the code. The engine and generator will be built on a C-channel frame that is partially embedded in the concrete slap. I'm going to fill the concrete with about 300 lbs of #8 lead shot to further help dampen the ringing. My lung problem has rendered me slow and plodding so I figure I have a year to go on this project. I'll be putting progress reports and photos on my blog, http://www.johndearmond.com. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address Just as a comment, internal combustion engines emit a certain amount of noise from the block itself and on sailing yachts it is quite common to see the "gen-set" enclosed in an "insulated" box which uses sound insulation and in some cases even lead sheet to deaden the noise. See https://www.linkedin.com/pulse/how-c...tor-sets-roode -- Cheers, John B. |
#9
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Sun, 16 Jul 2017 18:31:30 -0400, Neon John wrote:
On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) I hate the sound of running machinery. Because up here in the mountains the power goes off for longer than 24 hours about every month, I bought and installed Generac's 10 kW automatic standby generator system. It works perfectly. EXCEPT. It uses a B&S Vanguard twin cylinder air-cooled engine and a 2 pole alternator. That means 3600 RPM roar. Intolerably loud. Next genset you buy..get a 1800 RPM genny. They last forever and can be had really....really cheaply on Ebay, government auctions and so forth. And get a diesel one. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#10
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Sun, 16 Jul 2017 19:39:52 -0700, Gunner Asch
wrote: On Sun, 16 Jul 2017 18:31:30 -0400, Neon John wrote: On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) I hate the sound of running machinery. Because up here in the mountains the power goes off for longer than 24 hours about every month, I bought and installed Generac's 10 kW automatic standby generator system. It works perfectly. EXCEPT. It uses a B&S Vanguard twin cylinder air-cooled engine and a 2 pole alternator. That means 3600 RPM roar. Intolerably loud. Next genset you buy..get a 1800 RPM genny. They last forever and can be had really....really cheaply on Ebay, government auctions and so forth. And get a diesel one. Sorry John..jumped too quick. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#11
Posted to rec.crafts.metalworking
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Tires....help needed on choices
On Sun, 16 Jul 2017 16:59:08 -0400, Neon John wrote:
On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) Well, he did drive his cube truck down from NY and spend 2 weeks helping me prepare my house for my incoming bride. This involved hauling more than a ton of metal to the scrap metal yard, disposing of over 1000 phonograph records, several truckloads of garbage and the cube van full of "stuff". Then building built-in bookcases and other furniture. I was ill at the time with a paralyzed lung and on oxygen so I mostly watched. (Miraculous robotic surgery fixed that lung so I now breathe almost normally.) So when he said that he'd like to have that generator, I said "Load 'er up!". I think I got a pretty good deal for that gift :-) Yes, you did. Glad to hear you got better, too. - If ever the Time should come, when vain and aspiring Men shall possess the highest Seats in Government, our Country will stand in Need of its experienced Patriots to prevent its Ruin. -- Samuel Adams |
#12
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Sun, 16 Jul 2017 18:31:30 -0400, Neon John wrote:
On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) I hate the sound of running machinery. Because up here in the mountains the power goes off for longer than 24 hours about every month, I bought and installed Generac's 10 kW automatic standby generator system. It works perfectly. EXCEPT. It uses a B&S Vanguard twin cylinder air-cooled engine and a 2 pole alternator. That means 3600 RPM roar. Intolerably loud. They're ghastly. My interim solution was to buy 4 sheets of pre-fabricated wooden fencing and 4 sheets of foil-backed Styrofoam sheathing and build an open-top enclosure around the unit. I fabricated a duct out of ductboard (compressed fiberglass) to carry the hot exhaust air up and out so the thing would not overheat. I'm looking at a pair of C-shaped shells to quiet my compressor. Carpeting over OSB/ply/MDF does a surprising amount of quieting. By leaving the large opening, air can flow. I have some 1/4" closed cell foam which I may tack under there, too. It's amazing how much noise comes from the intake on a compressor. That improved things a lot but the thing will still awaken me when it starts at night. Plus it's just a little too small. The automatic transfer switch has 3 levels of load shedding. I have to shed the water heater if the AC starts. That's something I'll have to work out with the solar setup. With only 1kW, I'll have to shed the So I'm building the ultimate. I have procured a 15kVA foot mount 4 pole military surplus belt driven generator. And I've procured the V6 engine, exhaust and electronics out of a late model Ford pickup truck. That should provide enough HP. I used to consult to Ford on special projects so I was able to get the performance data on the engine and the PCM's source code. That's cool. The generator is an 1800 RPM affair. The performance data shows that the engine can provide about 25 HP at 1400 RPM. So the generator will be geared up a little. 1400 RPM is barely above idle on this water-cooled and QUIET engine. And the Brake Specific Fuel Consumption on that engine at that speed is phenomenal. Very interesting. 1,800rpm should be far enough off idle to give you a few more hp, I believe, and farther still under load. It would be nice not to have to add a transmission to it. I guess you'll find out once you put the puzzle together. I'll convert it over to propane but keep the emission controls. Nothing like being awakened in the middle of the night by the CO alarm going off because the air got heavy and trapped the current generator's exhaust. Surprise! Alarms, even 3 blocks away, in the middle of the night are never fun. This engine is fly-by-wire (servo on the throttle plate) so my governor will be the cruise control. I've designed a little microprocessor board that listens to the generator's frequency, multiplies that by a factor to satisfy the PCM's road speed sensor input and a few other things such as detecting power loss and sending a start signal to the PCM. The PCM controls the starter motor, engaging it up to 5 times before locking out. The generator has its own voltage control module. Hah, cool! I was wondering how you removed that pesky 25mph cruise limiter. This engine does not use an engine-driven cooling fan. All done by giant pancake fans. Variable speed to boot. So little noise there. The battery will be charged and maintained by a Progressive Dynamics 40 amp Intellipower so no generator noise. I opted for the variable speed DC fan motor on the HVAC system I put in the house in 2002, and the difference in sound is phenomenal. I'm sure the pancake fan is much quieter than the belt driven fan, but at that rpm, I doubt it will be working too hard. Consider ducting at least some of the building's intake air through the radiators for a natural flow. The only remaining belt-driven accessory is the water pump. I'm looking at a racing electric pump to replace it. Then there will be only the 60 Hz alternator rotor that is turning. All good. The entire assembly will be housed in a small pre-fab building with louvers to let air in and the radiators mounted over a hole in the other side to exhaust air. I'm going to run 2 radiators in hydraulic series, located one above the other. I hope that with this configuration, natural circulation will circulate the coolant and require minimal pumping. Yup. How far removed is the building from your house/bedroom? The inside of the building and especially the metal roof will be lined with spun lead as is used to soundproof sound booths. My goal is to have this thing be so quiet that it'll be difficult to hear it run even when nearby. I have a Generac QuietPack RV generator that almost meets that criteria so I think that it will be possible. That's the only way to run a generator: silently. As the project stands right now, I've done all the procurement and have written some of the code. The engine and generator will be built on a C-channel frame that is partially embedded in the concrete slap. I'm going to fill the concrete with about 300 lbs of #8 lead shot to further help dampen the ringing. Don't -even- tell the inspector about that. They're psychotically allergic to lead. g My lung problem has rendered me slow and plodding so I figure I have a year to go on this project. I'll be putting progress reports and photos on my blog, http://www.johndearmond.com. I'll definitely check that out. Breathe on, Brother. Slow and steady is how I'm starting to learn to live, too. - If ever the Time should come, when vain and aspiring Men shall possess the highest Seats in Government, our Country will stand in Need of its experienced Patriots to prevent its Ruin. -- Samuel Adams |
#13
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
"John B." wrote in message
... On Sun, 16 Jul 2017 18:31:30 -0400, Neon John wrote: On Sat, 15 Jul 2017 15:52:20 -0700, Larry Jaques wrote: Wow, 400 hours of work and you gave it away? I've always hated the noise gensets put out, too. Compressors are bad enough, so I'm working on a housing for mine now. (Project 143 or so on the priority list now.) I hate the sound of running machinery. Because up here in the mountains the power goes off for longer than 24 hours about every month, I bought and installed Generac's 10 kW automatic standby generator system. It works perfectly. EXCEPT. It uses a B&S Vanguard twin cylinder air-cooled engine and a 2 pole alternator. That means 3600 RPM roar. Intolerably loud. My interim solution was to buy 4 sheets of pre-fabricated wooden fencing and 4 sheets of foil-backed Styrofoam sheathing and build an open-top enclosure around the unit. I fabricated a duct out of ductboard (compressed fiberglass) to carry the hot exhaust air up and out so the thing would not overheat. That improved things a lot but the thing will still awaken me when it starts at night. Plus it's just a little too small. The automatic transfer switch has 3 levels of load shedding. I have to shed the water heater if the AC starts. So I'm building the ultimate. I have procured a 15kVA foot mount 4 pole military surplus belt driven generator. And I've procured the V6 engine, exhaust and electronics out of a late model Ford pickup truck. I used to consult to Ford on special projects so I was able to get the performance data on the engine and the PCM's source code. The generator is an 1800 RPM affair. The performance data shows that the engine can provide about 25 HP at 1400 RPM. So the generator will be geared up a little. 1400 RPM is barely above idle on this water-cooled and QUIET engine. And the Brake Specific Fuel Consumption on that engine at that speed is phenomenal. I'll convert it over to propane but keep the emission controls. Nothing like being awakened in the middle of the night by the CO alarm going off because the air got heavy and trapped the current generator's exhaust. This engine is fly-by-wire (servo on the throttle plate) so my governor will be the cruise control. I've designed a little microprocessor board that listens to the generator's frequency, multiplies that by a factor to satisfy the PCM's road speed sensor input and a few other things such as detecting power loss and sending a start signal to the PCM. The PCM controls the starter motor, engaging it up to 5 times before locking out. The generator has its own voltage control module. This engine does not use an engine-driven cooling fan. All done by giant pancake fans. Variable speed to boot. So little noise there. The battery will be charged and maintained by a Progressive Dynamics 40 amp Intellipower so no generator noise. The only remaining belt-driven accessory is the water pump. I'm looking at a racing electric pump to replace it. Then there will be only the 60 Hz alternator rotor that is turning. The entire assembly will be housed in a small pre-fab building with louvers to let air in and the radiators mounted over a hole in the other side to exhaust air. I'm going to run 2 radiators in hydraulic series, located one above the other. I hope that with this configuration, natural circulation will circulate the coolant and require minimal pumping. The inside of the building and especially the metal roof will be lined with spun lead as is used to soundproof sound booths. My goal is to have this thing be so quiet that it'll be difficult to hear it run even when nearby. I have a Generac QuietPack RV generator that almost meets that criteria so I think that it will be possible. As the project stands right now, I've done all the procurement and have written some of the code. The engine and generator will be built on a C-channel frame that is partially embedded in the concrete slap. I'm going to fill the concrete with about 300 lbs of #8 lead shot to further help dampen the ringing. My lung problem has rendered me slow and plodding so I figure I have a year to go on this project. I'll be putting progress reports and photos on my blog, http://www.johndearmond.com. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address Just as a comment, internal combustion engines emit a certain amount of noise from the block itself and on sailing yachts it is quite common to see the "gen-set" enclosed in an "insulated" box which uses sound insulation and in some cases even lead sheet to deaden the noise. See https://www.linkedin.com/pulse/how-c...tor-sets-roode -- Cheers, John B. I made a take-down sound reducing enclosure for a portable Coleman generator from two 2' by 4' fire-rated acoustic ceiling tiles, cut to 2' x 2' since it's a small generator. The faces of the tiles are fairly durable but the edges needed sheetmetal channel rims to minimize crumbling. I had 2" wide steel trim strips from an old aboveground pool and a brake to bend them on, otherwise aluminum flashing bent around wood forms should do well enough. http://makezine.com/2015/06/24/skill...h-sheet-metal/ I prefer to hammer on a block of wood held against the bent flange. This gives nice square corners. The corners of the back panel are reinforced with aluminum angle brackets that extend out far enough for the other three panels to nest in for transportation and storage, mainly to protect the panels from rubbing together. It assembles with thumbscrews through the back that screw into sheetmetal clip nuts in the rear corners of the sides. The top is unattached for easier access to the generator, and the front is open to let exhaust out and air in, a 4 sided cube. In bad weather it can be covered with something waterproof like pieces of corrugated roofing. It faces back from behind the house, unfortunately toward possible sound reflectors so I didn't measure the reduction in decibels, only in how far away I could recognize it as a generator. I can't hear the genny from the street or neighbors' houses if there's traffic within 1/4 mile. While testing it I tried an exhaust extension of fiberglass pipe insulation which barely made a difference, the noise comes from the engine. -jsw |
#14
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quiet generator (was Tires....help needed on choices)
On Sun, 16 Jul 2017 19:39:52 -0700, Gunner Asch
wrote: Next genset you buy..get a 1800 RPM genny. They last forever and can be had really....really cheaply on Ebay, government auctions and so forth. And get a diesel one. No diesel for me. Too much fuel maintenance plus diesel engine parts are expensive. Plus I can't stand the odor of diesel exhaust. Propane is the way to go for emergency standby. Propane is maintenance free. Plus one can get it delivered much more easily here in the South where oil heat is very uncommon. I have a 500 gallon propane tank that is about to be converted to underground since some bullet dings have appeared in my above-ground tank. My current generator consumes 1/4 gallon/hr at half load. So I can run 2000 hours or 83 days continuously. In an extended outage, I only run the genset about half of each day. Enough to keep the refrigeration cold and to charge my whole-house UPS. I have my house divided into "vital bus" and "balance of plant" loads, to use nuclear terminology. Vital bus include lighting, refrigeration and the computers. My UPS will run the Vital Bus for 24 hours. The battery bank charges in about 5 hours during the time the genset is running. If I had a diesel genset, I'd have to worry about water collection, fungus growth, waxing and so on. I get my fuel in the spring when prices are lowest. If I bought diesel then, I'd get high paraffin summer fuel which would require an anti-waxing additive to protect it during winter months. Propane is fill-it-and-forget-it. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#15
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Tue, 18 Jul 2017 09:12:58 -0400, Neon John wrote:
On Sun, 16 Jul 2017 19:39:52 -0700, Gunner Asch wrote: Next genset you buy..get a 1800 RPM genny. They last forever and can be had really....really cheaply on Ebay, government auctions and so forth. And get a diesel one. No diesel for me. Too much fuel maintenance plus diesel engine parts are expensive. Plus I can't stand the odor of diesel exhaust. Fuel maintainence is easy and cheap. Diesel engine parts cost is cheap..when you consider the time/life part of diesel engines. When you replace a part on a diesel..its less than than 1/4 as often as a gasoline engine and may cost the same or 2x as much..hence you are saving a fair amount of cash. Propane is the way to go for emergency standby. Propane is maintenance free. Plus one can get it delivered much more easily here in the South where oil heat is very uncommon. Ever heard of Bio Propane? Neither have I. However..bio diesel can be CHEAPLY made by you yourself. I have a 500 gallon propane tank that is about to be converted to underground since some bullet dings have appeared in my above-ground tank. Good idea! My current generator consumes 1/4 gallon/hr at half load. So I can run 2000 hours or 83 days continuously. In an extended outage, I only run the genset about half of each day. Enough to keep the refrigeration cold and to charge my whole-house UPS. So you are good for about 6 months. Period I have my house divided into "vital bus" and "balance of plant" loads, to use nuclear terminology. Vital bus include lighting, refrigeration and the computers. My UPS will run the Vital Bus for 24 hours. The battery bank charges in about 5 hours during the time the genset is running. Good! If I had a diesel genset, I'd have to worry about water collection, fungus growth, waxing and so on. I get my fuel in the spring when prices are lowest. If I bought diesel then, I'd get high paraffin summer fuel which would require an anti-waxing additive to protect it during winter months. Propane is fill-it-and-forget-it. All the issues with diesel are easy resolved and cheaply. Ask the military and all the hundreds of thousands of diesel backup generators used in commercial buildings how its done. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#16
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
On Tue, 18 Jul 2017 06:41:31 -0700, Gunner Asch
wrote: On Tue, 18 Jul 2017 09:12:58 -0400, Neon John wrote: My current generator consumes 1/4 gallon/hr at half load. So I can run 2000 hours or 83 days continuously. In an extended outage, I only run the genset about half of each day. Enough to keep the refrigeration cold and to charge my whole-house UPS. All the issues with diesel are easy resolved and cheaply. So if it's easy and cheap, and since you've been talking about generators for years, then surely by now you have a diesel/UPS setup to match John's, right? Did you get a permit for your diesel tank? Did you build a custom muffler, or do you find that the dog barking drowns out the genny? Did you save the neighborhood yet by doling out diesel fuel during an earthquake? |
#17
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quiet generator (was Tires....help needed on choices)
On Tue, 18 Jul 2017 06:41:31 -0700, Gunner Asch
wrote: Fuel maintainence is easy and cheap. Diesel engine parts cost is cheap..when you consider the time/life part of diesel engines. When you replace a part on a diesel..its less than than 1/4 as often as a gasoline engine and may cost the same or 2x as much..hence you are saving a fair amount of cash. I have an SAE paper here that pretty convincingly makes the case that the life of an engine can be expressed in the total number of revolutions it has made. Diesels have a reputation for being reliable because they have traditional turned at lower RPM to deliver the required power. A diesel driving an 1800 RPM generator turns the same number of total RPM as a gas 1800 RPM generator so the gap narrows and probably closes. Besides, engines designed with CAD software and manufactured with CAM machinery achieve vastly closer tolerances than the engines of old. 300,000 miles on a gas engine isn't unusual these days. Example: My neighbor is the wine expert for the regional liquor distributor. He's on the road all the time. He purchases a Ford F-150 pickup truck at the same time I did. He opted for the V6 EcoBoost. Totally defying my expectations, he told me this weekend that his truck has just turned 300,000 miles and still uses no oil. Propane is the way to go for emergency standby. Propane is maintenance free. Plus one can get it delivered much more easily here in the South where oil heat is very uncommon. Ever heard of Bio Propane? Neither have I. Of course. It's called wood gas and is made by heating wood anaerobically and then optionally filtering out the tar. The result is a mixture of methane, some higher hydrocarbons and CO. A couple of years ago a friend of mine built a bio-fuel plant for a local chicken processor. It hydrolyzes chicken feathers and feeds a bank of generators that supply most of the plant's electrical needs. I designed a large induction heater to heat the reaction chamber very rapidly. However..bio diesel can be CHEAPLY made by you yourself. BTDT. Have less than zero interest in repeating the experiment. I should note that the "free" fryer oil obtained from restaurants, the most common feedstock, is usually stolen. The recycling company that supplies the grease receptacle signs a contract with the restaurant operator that transfers title to the oil when it is drained from the fryers. So when a restaurant operator gives away fryer oil, he is giving away something he doesn't own. IOW, the oil is stolen from its rightful owner. I know this based on running a chain of BBQ restaurants for 12 years. The recyclers are getting very aggressive about this, posting signs on many receptacles warning of prosecution for oil theft. Even if it were legal, I have less than zero interest in doing any work to make my generator run. I'm in my 60s now and stuff like that no longer interests me. Building this 15kW generator is still interesting but once built, I expect it to run unattended for years. At least until I have to go into an independent living home :-) All the issues with diesel are easy resolved and cheaply. Ask the military and all the hundreds of thousands of diesel backup generators used in commercial buildings how its done. But that means that I have to so something and that's more than the zero maintenance that propane storage requires. The military went to a diesel-like fuel (JP-something) to simplify logistics and to reduce the fire hazard of storing and transporting gasoline in war zones. They didn't change away from gasoline for any performance reason. If you look closely at large standby generators such as those which power hospitals, you'll find that many of them run on natural gas. Besides, regardless of the fuel used, such institutions have something called a maintenance staff or contractor. I don't and I don't intend to fritter my time away doing maintenance on my system. It's a matter of choice. I choose a technology that requires little more than an oil change every few years. Others such as yourself may find the process of building and maintaining a diesel system interesting. To each his own. That's the beauty of free choice. Incidentally, there is a guy in Cleveland, TN (John Stafford, 423 479-7895) who bought up hundreds of the military gas generators when the military did the change-out. He has them lines "shoulder to shoulder" on an approximately 10 acre laydown yard. He's who I bought my 15kW generator head from. He is VERY affordable. I considered a 15kW mil surplus generator but it was too noisy. John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN See website for email address |
#18
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quiet generator (was Tires....help needed on choices)
On Wednesday, July 19, 2017 at 9:40:17 AM UTC-4, Neon John wrote:
John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN I have thought emergency generators. but we are only a couple of miles from a substation and have only had the power go out about once in 8 years. And it was only out for a few hours. So I have only come up with emergency lighting. And it is very simple. Just a couple of 12 volt batteries and some 12 volt automotive LED's. But if I were going to have an emergency generator, I would try to find a fork lift engine that runs on propane and connect that to a 1800 rpm generator head. The engine and generator could be in a closed sound enclosure with the radiator and a fan in more or less the open. Your remark about engines running about the same number of revolutions made me think of an engine at a pipeline pumping station I saw when I was still going to high school. To the best of my memory, it was a two hundred hp V8. No big deal there, except it ran at about 200 rpm and was about 8 feet long. Dan |
#19
Posted to rec.crafts.metalworking
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quiet generator (was Tires....help needed on choices)
wrote in message
... On Wednesday, July 19, 2017 at 9:40:17 AM UTC-4, Neon John wrote: John John DeArmond http://www.neon-john.com http://www.tnduction.com Tellico Plains, Occupied TN I have thought emergency generators. but we are only a couple of miles from a substation and have only had the power go out about once in 8 years. And it was only out for a few hours. So I have only come up with emergency lighting. And it is very simple. Just a couple of 12 volt batteries and some 12 volt automotive LED's. ================= During long outages I've found that one thing I needed badly was a lantern I could walk around with and put down or hang up to free both hands to dig stuff out of storage. It didn't have to be very bright but had to be small enough to sit on any nearby flat spot. Solar driveway light heads with easily replaced AA NiCads actually worked pretty well. Their circle of dim light was better than a small, bright flashlight beam that ruined my night vision to see outside the lit spot. This is really too big and bulky for the purpose: https://www.harborfreight.com/all-pu...ern-94740.html Also extension cords on the floor are a hazard in the dark. -jsw |
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