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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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#42
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Sun, 06 Dec 2015 11:51:17 -0800, Larry Jaques
wrote: On Sun, 06 Dec 2015 12:27:54 -0600, Jon Elson wrote: Larry Jaques wrote: I might expect one relay for each water temp, one for motor start, and maybe one for switching into spin mode, but 12? What the hell does your washer DO, besides wash clothes? Iron, fold, and stack, too? No, no no! This thing is a computer video game with a washing machine grafted on the side for grins! OK, yes, there is cold and hot water main inlet. Then, the incoming water can go straight into the tub, or it can be diverted into the softener tank, the detergent tank or the bleach tank, to deliver some of that product into the tub. Then, when the recirculate pump is on, it has valves to select where that water goes. It has two pumps (recirculate and drain) and a VFD to run the drum motor. There is a spline coupling between the motor and the basket. When the tub is filled to a certain level, an air chamber floats the basket up to disconnect the spin coupling, and then the motor is rocked back and forth for the agitate function. When draining, the basket lands on the coupling, and then the motor tweaks back and forth gently until the basket seats the coupling onto the shaft before starting the spin cycle, so as not to tear up the coupling. The pump motors look kind of like giant photograph motors, so apparently they are 120 V shaded pole motors, but have magnets in the rotor. The recirculate motor starts smoothly, but the larger drain motor rattles and vibrates for a while until the rotor falls into sync. Quite a strange way to do things. So, I think two of the big relays are for the pump motors. Another big relay must be for the heater, but I think our actual machine does NOT have a heater installed in the tub. I was able to download the service manual for the thing, by pressing certain buttons, you can activate multiple diagnostic and test procedures that exercise and partially self-test verious parts of the machine. Sheesh, what a bunch of complexity, to do what used to be done with some smooth rocks down at the riverside! Praps y'all should pursue these 2 less technical devices? http://tinyurl.com/ngmuzox and http://tinyurl.com/q57xduk They sure beat rocks. (Well, a bit.) Re the laundry tubs; have you ever taken a bath in a concrete bath tub? In 1946 my maternal grandfather came to live with us, he missed his big city bathtub and disliked the Saturday night ritual in the round, galvanized laundry tub so he built forms and cast his own concrete bath tub -full size with three inch walls - took eight men to move one. Idon't know if there are any left - he cast about a dozen for neighbours - our developed a crack when it was moved from behind the kitchen stove into the new fangled indoor bathroom in 1960 and was replaced with a more modern unit. That tub taught me to appreciate the rubber bath mat! --- Gerry :-)} London,Canada |
#43
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Mon, 07 Dec 2015 19:33:00 -0500, wrote:
On Sun, 06 Dec 2015 11:51:17 -0800, Larry Jaques wrote: On Sun, 06 Dec 2015 12:27:54 -0600, Jon Elson wrote: Sheesh, what a bunch of complexity, to do what used to be done with some smooth rocks down at the riverside! Praps y'all should pursue these 2 less technical devices? http://tinyurl.com/ngmuzox and http://tinyurl.com/q57xduk They sure beat rocks. (Well, a bit.) Re the laundry tubs; have you ever taken a bath in a concrete bath tub? Thankfully, NO! In 1946 my maternal grandfather came to live with us, he missed his big city bathtub and disliked the Saturday night ritual in the round, galvanized laundry tub so he built forms and cast his own concrete bath tub -full size with three inch walls - took eight men to move one. Idon't know if there are any left - he cast about a dozen for neighbours - our developed a crack when it was moved from behind the kitchen stove into the new fangled indoor bathroom in 1960 and was replaced with a more modern unit. That tub taught me to appreciate the rubber bath mat! I can imagine. -- Courage and perseverance have a magical talisman, before which difficulties disappear and obstacles vanish into air. -- John Quincy Adams |
#44
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Mon, 07 Dec 2015 17:00:19 -0600, Jon Elson
wrote: Leon Fisk wrote: On Sun, 06 Dec 2015 12:27:54 -0600 Jon Elson wrote: snip Sheesh, what a bunch of complexity, to do what used to be done with some smooth rocks down at the riverside! Still using the old Speed Queen Wringer Washer the parents bought in the late 60's... A friend of mine has a log cabin in the Missouri Ozarks. He has a Frigidaire (I think) washer that must have been made in 1946 or something. Seems a little too modern to have been made before most industries shut down during the great depression, so I'm taking a wild guess. You fill it with a water hose, drain it by putting the drain hose on the ground, and it has a wringer. He says it still works, but I have not actually seen him fire it up. Looks like a fair bit of trouble to use, and that wringer looks seriously dangerous. Oh, they are, but they're also a whole lot more effective than the spin cycles on the majority of new washers. The downside is that they press in creases in some materials. BTDT, got the wrinkles and pinched fingers. I do _not_ miss working at the car wash where that beastie was housed. -- Courage and perseverance have a magical talisman, before which difficulties disappear and obstacles vanish into air. -- John Quincy Adams |
#45
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Consumer electronics "war stories"
On Mon, 07 Dec 2015 12:25:25 -0500, Spehro Pefhany
wrote: On Sun, 6 Dec 2015 07:37:11 -0800 (PST), rangerssuck wrote: On Saturday, December 5, 2015 at 11:41:05 PM UTC-5, Jon Elson wrote: Larry Jaques wrote: So, are you going to tell me that this is a coincidence, or are these thieving bastids designing this crap to fail quickly, then making an equal amount (to the sales profit) by servicing their dead crap? I'm strongly guessing the latter. sigh No, I think the evil *******s is pretty appropriate! On the other hand, it may have just been ONE crappy relay. I bought a bunch of parts to put arc suppressors on all the relays, but never did install them. So, there are still 11 relays of two different types perking along merrily for the last 3+ years! I was expecting the rest of the relays to start failing, but that hasn't happened. Jon It may not have been a bad relay, but may have been that the one relay that went bad was being asked to do something out of spec. Life of a mechanical relay is typically only 50-100,000 operations at full rated load. Often even less for motor rated relays. That's completely specified, sometimes there is a curve showing typical life at lower than rated current, and you can easily test for that (at 2 seconds per operaton 100,000 operations takes a couple days, and you can test for 1,000,000 in a few weeks) . At only 10 operations per hour in a product, 24/7, a 100k operations relay will last less than 2 years. Here's one that's rated for only 25,000 operations at rated current *resistive* load. https://www.omron.com/ecb/products/p...pdf/en-g5q.pdf Now as an engineer working for an appliance manufacturer, do you recommend a $5 relay (longer life or heavily derated) instead of a 50 cent one to make it last 10-20 years rather than 5 average, knowing that will increase the retail price by $50+, or do you use the cheaper part? Do you make the same decision for all the **other** parts that have a definite life span, and if so will you still have a job- or will your product be affordable enough to sell in the required quantities. It's not really evil, just an economic decision. If you're a smart manufacturer, you offer one at each price point. Maytag vs Magic Chef brands from the same mfgr. The only problem is that they apparently stopped putting the good stuff in Maytags, too, but didn't drop the prices. -- Courage and perseverance have a magical talisman, before which difficulties disappear and obstacles vanish into air. -- John Quincy Adams |
#46
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Consumer electronics "war stories"
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#47
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Mon, 07 Dec 2015 19:19:32 -0500, Ed Huntress
wrote: On Mon, 07 Dec 2015 19:14:22 -0500, wrote: On Sun, 06 Dec 2015 21:03:18 -0500, Ed Huntress wrote: On Sun, 06 Dec 2015 19:26:08 -0500, wrote: On Sun, 06 Dec 2015 18:29:20 -0500, Ed Huntress wrote: On Sun, 06 Dec 2015 16:43:08 -0500, wrote: On Sun, 06 Dec 2015 15:46:17 -0500, Ed Huntress wrote: On 06 Dec 2015 16:01:54 -0400, Mike Spencer wrote: Ed Huntress writes: A Steampunk washing machine! But you need a "Casey Jones Engineer" certificate to run it. d8-) There were wringer washers that ran on small gasoline engines. In the 70s, an old guy near me said he remembered (gesturing toward the road he lived on) when they came up along there installing power poles, hooking up houses, in the 1930s. Right behind them came a salesman selling electric wringer washers. Yeah, we had the gasoline-engined washers here, too. I remember seeing some as a kid, in south New Jersey. I've got the engine.. See: http://snyder.on.ca/pages/Old%20Engi...501_engine.htm Very cool. Johnson Outboards made a motor for washing machines in the 1930s. And, if you have a copy of the 1952 edition of _The Boy Mechanic_ (I do), they have a plan for a flat-bottomed "sea sled" boat powered by one. It used a piece of rubber garden hose for a coupler to the prop shaft. OMC was Johnson. (also Evinrude) and this engine was sold under all 3 names at one point. I've seen the plans. Saw one built with a twin cyl 2 stroke Maytag years ago. There wereplans to build a midget car and a scooter using the iron horse too - as well as plans for and a commercially built Maytag Midget. The "horse" was also used on quite a few early lawn mowers and some generators and garden tractors. They also built 2 stroke iron horse engines (used on early Lawn Boy and Jacobsen mowers) There's a lot of charm in those old engines. I have only one of them left -- an O&R from the '60s (I think -- maybe the '50s). It's interesting that we never feel that from electric motors. g The motor that powers my bench disk sander is a 1-hp GE Century from before WWII. It's as big as a microwave oven, and all of the inertia makes for a great disk sander. But it has as much charm as a sump pump. That - sump pump with the vertical shaft and column removed - is what powers my Dunlap jigsaw. --- Gerry :-)} London,Canada Mine is from our first dishwasher. g You're the only other person I know who has a Dunlop jigsaw. I still have to make a blade guide for it. The old one plumb wore out, and I haven't used it for at least ten years. I made a blade guide/hold down foot from a die cast, floor mount door stop. --- Gerry :-)} London,Canada |
#48
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Wed, 09 Dec 2015 21:21:49 -0500, wrote:
On Mon, 07 Dec 2015 19:19:32 -0500, Ed Huntress wrote: On Mon, 07 Dec 2015 19:14:22 -0500, wrote: On Sun, 06 Dec 2015 21:03:18 -0500, Ed Huntress wrote: On Sun, 06 Dec 2015 19:26:08 -0500, wrote: On Sun, 06 Dec 2015 18:29:20 -0500, Ed Huntress wrote: On Sun, 06 Dec 2015 16:43:08 -0500, wrote: On Sun, 06 Dec 2015 15:46:17 -0500, Ed Huntress wrote: On 06 Dec 2015 16:01:54 -0400, Mike Spencer wrote: Ed Huntress writes: A Steampunk washing machine! But you need a "Casey Jones Engineer" certificate to run it. d8-) There were wringer washers that ran on small gasoline engines. In the 70s, an old guy near me said he remembered (gesturing toward the road he lived on) when they came up along there installing power poles, hooking up houses, in the 1930s. Right behind them came a salesman selling electric wringer washers. Yeah, we had the gasoline-engined washers here, too. I remember seeing some as a kid, in south New Jersey. I've got the engine.. See: http://snyder.on.ca/pages/Old%20Engi...501_engine.htm Very cool. Johnson Outboards made a motor for washing machines in the 1930s. And, if you have a copy of the 1952 edition of _The Boy Mechanic_ (I do), they have a plan for a flat-bottomed "sea sled" boat powered by one. It used a piece of rubber garden hose for a coupler to the prop shaft. OMC was Johnson. (also Evinrude) and this engine was sold under all 3 names at one point. I've seen the plans. Saw one built with a twin cyl 2 stroke Maytag years ago. There wereplans to build a midget car and a scooter using the iron horse too - as well as plans for and a commercially built Maytag Midget. The "horse" was also used on quite a few early lawn mowers and some generators and garden tractors. They also built 2 stroke iron horse engines (used on early Lawn Boy and Jacobsen mowers) There's a lot of charm in those old engines. I have only one of them left -- an O&R from the '60s (I think -- maybe the '50s). It's interesting that we never feel that from electric motors. g The motor that powers my bench disk sander is a 1-hp GE Century from before WWII. It's as big as a microwave oven, and all of the inertia makes for a great disk sander. But it has as much charm as a sump pump. That - sump pump with the vertical shaft and column removed - is what powers my Dunlap jigsaw. --- Gerry :-)} London,Canada Mine is from our first dishwasher. g You're the only other person I know who has a Dunlop jigsaw. I still have to make a blade guide for it. The old one plumb wore out, and I haven't used it for at least ten years. I made a blade guide/hold down foot from a die cast, floor mount door stop. --- Gerry :-)} London,Canada Now, THAT's using what ya' got. g Mine has a rubber bushing in the overarm which, I think, used to hold the hold-down. My fingers are my hold-down. I got mine for free when an old guy I knew was cleaning out his basement. It's cut a lot of wood. -- Ed Huntress |
#49
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Wed, 09 Dec 2015 21:44:39 -0500, Ed Huntress
wrote: On Wed, 09 Dec 2015 21:21:49 -0500, wrote: On Mon, 07 Dec 2015 19:19:32 -0500, Ed Huntress wrote: On Mon, 07 Dec 2015 19:14:22 -0500, wrote: On Sun, 06 Dec 2015 21:03:18 -0500, Ed Huntress wrote: On Sun, 06 Dec 2015 19:26:08 -0500, wrote: On Sun, 06 Dec 2015 18:29:20 -0500, Ed Huntress wrote: On Sun, 06 Dec 2015 16:43:08 -0500, wrote: On Sun, 06 Dec 2015 15:46:17 -0500, Ed Huntress wrote: On 06 Dec 2015 16:01:54 -0400, Mike Spencer wrote: Ed Huntress writes: A Steampunk washing machine! But you need a "Casey Jones Engineer" certificate to run it. d8-) There were wringer washers that ran on small gasoline engines. In the 70s, an old guy near me said he remembered (gesturing toward the road he lived on) when they came up along there installing power poles, hooking up houses, in the 1930s. Right behind them came a salesman selling electric wringer washers. Yeah, we had the gasoline-engined washers here, too. I remember seeing some as a kid, in south New Jersey. I've got the engine.. See: http://snyder.on.ca/pages/Old%20Engi...501_engine.htm Very cool. Johnson Outboards made a motor for washing machines in the 1930s. And, if you have a copy of the 1952 edition of _The Boy Mechanic_ (I do), they have a plan for a flat-bottomed "sea sled" boat powered by one. It used a piece of rubber garden hose for a coupler to the prop shaft. OMC was Johnson. (also Evinrude) and this engine was sold under all 3 names at one point. I've seen the plans. Saw one built with a twin cyl 2 stroke Maytag years ago. There wereplans to build a midget car and a scooter using the iron horse too - as well as plans for and a commercially built Maytag Midget. The "horse" was also used on quite a few early lawn mowers and some generators and garden tractors. They also built 2 stroke iron horse engines (used on early Lawn Boy and Jacobsen mowers) There's a lot of charm in those old engines. I have only one of them left -- an O&R from the '60s (I think -- maybe the '50s). It's interesting that we never feel that from electric motors. g The motor that powers my bench disk sander is a 1-hp GE Century from before WWII. It's as big as a microwave oven, and all of the inertia makes for a great disk sander. But it has as much charm as a sump pump. That - sump pump with the vertical shaft and column removed - is what powers my Dunlap jigsaw. --- Gerry :-)} London,Canada Mine is from our first dishwasher. g You're the only other person I know who has a Dunlop jigsaw. I still have to make a blade guide for it. The old one plumb wore out, and I haven't used it for at least ten years. I made a blade guide/hold down foot from a die cast, floor mount door stop. --- Gerry :-)} London,Canada Now, THAT's using what ya' got. g Mine has a rubber bushing in the overarm which, I think, used to hold the hold-down. My fingers are my hold-down. I got mine for free when an old guy I knew was cleaning out his basement. It's cut a lot of wood. I paid $i.25 for mine at a church men's club auction in 1970 it has bee the first power tool for thee boys. I used jewelers blades quite often to cut up to 1/8" steel. I did replace the bushings several years ago. --- Gerry :-)} London,Canada |
#50
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Monday, December 7, 2015 at 12:18:18 PM UTC-5, Spehro Pefhany wrote:
On Sun, 6 Dec 2015 07:37:11 -0800 (PST), rangerssuck wrote: On Saturday, December 5, 2015 at 11:41:05 PM UTC-5, Jon Elson wrote: Larry Jaques wrote: So, are you going to tell me that this is a coincidence, or are these thieving bastids designing this crap to fail quickly, then making an equal amount (to the sales profit) by servicing their dead crap? I'm strongly guessing the latter. sigh No, I think the evil *******s is pretty appropriate! On the other hand, it may have just been ONE crappy relay. I bought a bunch of parts to put arc suppressors on all the relays, but never did install them. So, there are still 11 relays of two different types perking along merrily for the last 3+ years! I was expecting the rest of the relays to start failing, but that hasn't happened. Jon It may not have been a bad relay, but may have been that the one relay that went bad was being asked to do something out of spec. Life of a mechanical relay is typically only 50-100,000 operations at full rated load. Often even less for motor rated relays. That's completely specified, sometimes there is a curve showing typical life at lower than rated current, and you can easily test for that (at 2 seconds per operaton 100,000 operations takes a couple days, and you can test for 1,000,000 in a few weeks) . At only 10 operations per hour in a product, 24/7, a 100k operations relay will last less than 2 years. Here's one that's rated for only 25,000 operations at rated current *resistive* load. https://www.omron.com/ecb/products/p...pdf/en-g5q.pdf Now as an engineer working for an appliance manufacturer, do you recommend a $5 relay (longer life or heavily derated) instead of a 50 cent one to make it last 10-20 years rather than 5 average, knowing that will increase the retail price by $50+, or do you use the cheaper part? Do you make the same decision for all the **other** parts that have a definite life span, and if so will you still have a job- or will your product be affordable enough to sell in the required quantities. It's not really evil, just an economic decision. It seems like there ought to be solid state replacements for common mechanical relays. I've never had a failure of an SSR, and you can get them with built in snubbers and zero-cross switching. One would think it would be cheaper to mass produce SSRs vs mechanicals. I've seen lots of failures of solid state relays- they almost always fail 'on' and they do so more-or-less randomly rather than mechanical relays that have a definite life. They also produce a lot of heat requiring heat sinks, are more expensive and often less reliable in the bathtub part of the life curve. They have notoriously poor tolerance for overcurrent and overvoltage. There has been little improvement over the years in SSRs or mechanical relays, though both have gotten cheaper in real terms. It's possible to make SSRs more robust by using much larger overrated semiconductors and special I^2T fuses, but there's those pesky economic trade-offs again.. --sp -- Best regards, Spehro Pefhany Amazon link for AoE 3rd Edition: http://tinyurl.com/ntrpwu8 Microchip link for 2015 Masters in Phoenix: http://tinyurl.com/l7g2k48 Ease up, dude. Jon did NOT mention mechanical failure. He DID mention that the contacts were burned badly. Now, as for the fifty-cent vs five-dollar decision, by the time the washer hits a retail store, the price difference might be $1,000 vs $1,020. I KNOW that given the choice, I'd spend the extra twenty bucks. Larry J. mentioned that in the next post. |
#51
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Saturday, December 12, 2015 at 11:27:08 AM UTC-5, rangerssuck wrote:
Now, as for the fifty-cent vs five-dollar decision, by the time the washer hits a retail store, the price difference might be $1,000 vs $1,020. I KNOW that given the choice, I'd spend the extra twenty bucks. Larry J. mentioned that in the next post. That makes sense, but what if there are 6 such items . Then in the retail store the price difference might be $1000 vs $1120. Tougher choice. Dan |
#52
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On 2015-12-11, wrote:
On Wed, 09 Dec 2015 21:44:39 -0500, Ed Huntress wrote: [ ... jigsaw ... ] Now, THAT's using what ya' got. g Mine has a rubber bushing in the overarm which, I think, used to hold the hold-down. My fingers are my hold-down. I got mine for free when an old guy I knew was cleaning out his basement. It's cut a lot of wood. I paid $i.25 for mine at a church men's club auction in 1970 it has O.K. A question. Did you mean $1.25 (what it sort of looks like), or perhaps $8.25 or $9.25 (the two number keys closest to the 'i' key? (Assuming a normal QWERTY keyboard.) Enjoy DoN. -- Remove oil spill source from e-mail Email: | (KV4PH) Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#53
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On 13 Dec 2015 02:34:23 GMT, "DoN. Nichols"
wrote: On 2015-12-11, wrote: On Wed, 09 Dec 2015 21:44:39 -0500, Ed Huntress wrote: [ ... jigsaw ... ] Now, THAT's using what ya' got. g Mine has a rubber bushing in the overarm which, I think, used to hold the hold-down. My fingers are my hold-down. I got mine for free when an old guy I knew was cleaning out his basement. It's cut a lot of wood. I paid $i.25 for mine at a church men's club auction in 1970 it has O.K. A question. Did you mean $1.25 (what it sort of looks like), or perhaps $8.25 or $9.25 (the two number keys closest to the 'i' key? (Assuming a normal QWERTY keyboard.) Enjoy DoN. Sorry bout that, it was $1.25 --- Gerry :-)} London,Canada |
#54
Posted to rec.crafts.metalworking
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Consumer electronics "war stories"
On Saturday, December 12, 2015 at 12:59:34 PM UTC-5, wrote:
On Saturday, December 12, 2015 at 11:27:08 AM UTC-5, rangerssuck wrote: Now, as for the fifty-cent vs five-dollar decision, by the time the washer hits a retail store, the price difference might be $1,000 vs $1,020. I KNOW that given the choice, I'd spend the extra twenty bucks. Larry J. mentioned that in the next post. That makes sense, but what if there are 6 such items . Then in the retail store the price difference might be $1000 vs $1120. Tougher choice. Dan True, but then again, I doubt major manufacturers are paying anywhere near five bucks for solid state relays in the sizes and quantities they would consume. But still, a 10% or 15% premium for the appliance that's going to last longer seems pretty reasonable. A few years back, I bought 100 seagate barracuda drives. They started failing soon after installation, and at an alarming rate (I have since replaced every one of them), Several frustrating calls to Seagate got me no further than "they're under warranty, so return them and we'll ship you refurbs." I told them that I wasn't interested in a like-for-like replacement, as the new ones were just as likely to be bad as well. It's not the cost of the drive, it's the cost of travelling to the customer to replace it. let alone the lost faith the customer has in my product. The best they could suggest was buying enterprise level drives which had a longer warranty, but no promise that they were less likely to fail during the warranty period. I would gladly pay double, triple or even quadruple the price for had drives that are built to last. Seagate, Maxtor, Hitachi and Western Digital all told me that they don't have such a product because their marketing people didn't recognize a need for them, and "If it dies under warranty, we'll ship you a refurb." Feh. |
#55
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Consumer electronics "war stories"
"rangerssuck" wrote in message
... On Saturday, December 12, 2015 at 12:59:34 PM UTC-5, wrote: On Saturday, December 12, 2015 at 11:27:08 AM UTC-5, rangerssuck wrote: Now, as for the fifty-cent vs five-dollar decision, by the time the washer hits a retail store, the price difference might be $1,000 vs $1,020. I KNOW that given the choice, I'd spend the extra twenty bucks. Larry J. mentioned that in the next post. That makes sense, but what if there are 6 such items . Then in the retail store the price difference might be $1000 vs $1120. Tougher choice. Dan True, but then again, I doubt major manufacturers are paying anywhere near five bucks for solid state relays in the sizes and quantities they would consume. But still, a 10% or 15% premium for the appliance that's going to last longer seems pretty reasonable. ============================= https://www.panasonic-electric-works...compliance.htm "Relays with contacts that contain cadmium are still exempt from the RoHS directive. However, due to its general corporate policy, Panasonic no longer offers any relays whose contacts contain cadmium." http://www.therelaycompany.com/materials.php "This contradicts earlier advice and is based on the switching qualities of AgCdO which cannot be matched by other materials. In some cases performance might otherwise be less than half that offered by this particular compound." |
#56
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Consumer electronics "war stories"
On Sunday, December 13, 2015 at 6:29:17 AM UTC-8, rangerssuck wrote:
A few years back, I bought 100 seagate barracuda drives. They started failing soon after installation, and at an alarming rate ... Seagate, Maxtor, Hitachi and Western Digital all told me that they don't have such a product because their marketing people didn't recognize a need for them, and "If it dies under warranty, we'll ship you a refurb." Feh. It could be worse. At least, their techs get the dead unit to analyze, and its flaws might inform the next generation hardware design. |
#57
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Consumer electronics "war stories"
"whit3rd" wrote in message
... On Sunday, December 13, 2015 at 6:29:17 AM UTC-8, rangerssuck wrote: A few years back, I bought 100 seagate barracuda drives. They started failing soon after installation, and at an alarming rate ... Seagate, Maxtor, Hitachi and Western Digital all told me that they don't have such a product because their marketing people didn't recognize a need for them, and "If it dies under warranty, we'll ship you a refurb." Feh. It could be worse. At least, their techs get the dead unit to analyze, and its flaws might inform the next generation hardware design. https://www.backblaze.com/blog/3tb-hard-drive-failure/ -jsw |
#58
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Consumer electronics "war stories"
On Sat, 05 Dec 2015 17:53:49 -0600, Jon Elson
wrote: wrote: On Saturday, December 5, 2015 at 2:44:26 PM UTC-5, Jon Elson wrote in rec.crafts.metalworking: OK, we got one of those fancy energy-saving washing machines. After a few years, it started having trouble filling with water. I replaced the solenoid valve assembly twice over about 6 months, and then started invetigating deeper. The control board had a micro and about a dozen electeromechanical relays on it. The one for the cold water valve eventually developed contacts burned so bad that I was able to diagnose it. I replaced it with a solid state relay, and all has been good for several years. I gues the cold water valve gets cycled the most often, so that relay got burned up first. No problem yet with any of the others. Yeah, obviously a current relay or just that kind of an interface or something. Tell 'em about it, so they can buy you a whole new one. You can't get anything if you stay silent. (I learned that the hard way) The only thing I'll get out of them is a $250 service call, and another control board with a short life. I assume everybody else that has this or a related model ends up replacing that board every 2-3 years. Geez, I'll bet that is the largest moneymaker they have in this business! Jon Neptune, right? |
#59
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Consumer electronics "war stories"
On Sunday, December 13, 2015 at 4:55:39 PM UTC-5, Jim Wilkins wrote:
"whit3rd" wrote in message ... On Sunday, December 13, 2015 at 6:29:17 AM UTC-8, rangerssuck wrote: A few years back, I bought 100 seagate barracuda drives. They started failing soon after installation, and at an alarming rate ... Seagate, Maxtor, Hitachi and Western Digital all told me that they don't have such a product because their marketing people didn't recognize a need for them, and "If it dies under warranty, we'll ship you a refurb." Feh. It could be worse. At least, their techs get the dead unit to analyze, and its flaws might inform the next generation hardware design. https://www.backblaze.com/blog/3tb-hard-drive-failure/ -jsw Oh yeah, that story reads very similar to mine, except that I am a one (sometimes two or three) man shop, and my customers (and their drives) are spread out over the NY metropolitan area. When one of these drives fails, and I have to go to the friggin' Empire State Building to replace it, the warranty coverage on a hundred dollar drive doesn't matter even a little bit. I now only install systems in raidz3 configuration. That allows three drives to fail before data is lost, and I get alarms when the first drive fails. Further, I buy from multiple sources to help avoid having drives in a single unit from the same manufacturing run. It aint perfect, it never will be, but it's as close as I can reasonably get. |
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Consumer electronics "war stories"
"rangerssuck" wrote in message
... On Sunday, December 13, 2015 at 4:55:39 PM UTC-5, Jim Wilkins wrote: "whit3rd" wrote in message ... On Sunday, December 13, 2015 at 6:29:17 AM UTC-8, rangerssuck wrote: A few years back, I bought 100 seagate barracuda drives. They started failing soon after installation, and at an alarming rate ... Seagate, Maxtor, Hitachi and Western Digital all told me that they don't have such a product because their marketing people didn't recognize a need for them, and "If it dies under warranty, we'll ship you a refurb." Feh. It could be worse. At least, their techs get the dead unit to analyze, and its flaws might inform the next generation hardware design. https://www.backblaze.com/blog/3tb-hard-drive-failure/ -jsw Oh yeah, that story reads very similar to mine, except that I am a one (sometimes two or three) man shop, and my customers (and their drives) are spread out over the NY metropolitan area. When one of these drives fails, and I have to go to the friggin' Empire State Building to replace it, the warranty coverage on a hundred dollar drive doesn't matter even a little bit. I now only install systems in raidz3 configuration. That allows three drives to fail before data is lost, and I get alarms when the first drive fails. Further, I buy from multiple sources to help avoid having drives in a single unit from the same manufacturing run. It aint perfect, it never will be, but it's as close as I can reasonably get. ============= They say the 4, 5, 6 and 8GB Seagates are looking good so far: http://www.myce.com/news/backblaze-r...q3-2015-77560/ "Seagate has gotten some bad press in the past from these reports, but the final graph shown at the BackBlaze site tells us that as they replace the older drives and put in newer, higher capacity ones, the Seagate performance has risen above Western Digital slightly. Backblaze is particularly pleased with their 6TB Seagate drives." -jsw |
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