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Post by cablehack on Aug 10, 2014 23:40:46 GMT
I always tin stranded wire and have to ask, if you torque the screws correctly, this should effectively crush anything soft so why would they loosen later? I can't say what will happen over 50 years but I have some things I did 10-20 years ago and they are still solid. For electronics and electrical I swear by 63/37 rosin core. I've hoarded a lifetime supply of lead solder. Problem with lead free is it's prone to dry joints. It shouldn't be surprising that the politically correct substitute is inferior. It is true that some screw terminations with tinned wires have survived with a tight connection, (just for the record the connections weren't loose in my monitor top relays) but I've seen others over my 35 years of working in electronics that have loosened. I don't think I can recall any instances of bare wire connections loosening. You can only crush the lead to a point. As time goes on more still flows under pressure. Therefore there is no longer the same conductor thickness between the screw and the terminals. In the Australian/New Zealand wiring rules, it states that; "Soft-soldered connections shall not be clamped under a screw or between metal surfaces". As a point of complete trivia, lead is not the only material that flows; glass is another. Thickness measurements have been done on very old window glass and the bottom of the glass has been found to be slightly thicker than the top.
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Post by ChrisJ on Aug 10, 2014 23:59:10 GMT
I always tin stranded wire and have to ask, if you torque the screws correctly, this should effectively crush anything soft so why would they loosen later? I can't say what will happen over 50 years but I have some things I did 10-20 years ago and they are still solid. For electronics and electrical I swear by 63/37 rosin core. I've hoarded a lifetime supply of lead solder. Problem with lead free is it's prone to dry joints. It shouldn't be surprising that the politically correct substitute is inferior. It is true that some screw terminations with tinned wires have survived with a tight connection, (just for the record the connections weren't loose in my monitor top relays) but I've seen others over my 35 years of working in electronics that have loosened. I don't think I can recall any instances of bare wire connections loosening. You can only crush the lead to a point. As time goes on more still flows under pressure. Therefore there is no longer the same conductor thickness between the screw and the terminals. In the Australian/New Zealand wiring rules, it states that; "Soft-soldered connections shall not be clamped under a screw or between metal surfaces". As a point of complete trivia, lead is not the only material that flows; glass is another. Thickness measurements have been done on very old window glass and the bottom of the glass has been found to be slightly thicker than the top.
While trying to figure out how old our house I had come across this rumor and found it to be false. www.cmog.org/article/does-glass-flowOur house was built in the 1860s and a lot of the windows are cylinder glass.
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Post by cablehack on Aug 11, 2014 0:07:26 GMT
While trying to figure out how old our house I had come across this rumor and found it to be false. www.cmog.org/article/does-glass-flowOur house was built in the 1860s and a lot of the windows are cylinder glass. How interesting! Thanks for that link - a most interesting read. I'd only heard about it from a work colleague who always used to come up with all sorts of scientific trivia. I must say it sounded quite believable at the time.
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Post by 2030vision on Aug 11, 2014 1:17:14 GMT
I've hoarded a lifetime supply of lead solder. Problem with lead free is it's prone to dry joints. It shouldn't be surprising that the politically correct substitute is inferior. It is true that some screw terminations with tinned wires have survived with a tight connection, (just for the record the connections weren't loose in my monitor top relays) but I've seen others over my 35 years of working in electronics that have loosened. I don't think I can recall any instances of bare wire connections loosening. You can only crush the lead to a point. As time goes on more still flows under pressure. Therefore there is no longer the same conductor thickness between the screw and the terminals. In the Australian/New Zealand wiring rules, it states that; "Soft-soldered connections shall not be clamped under a screw or between metal surfaces". As a point of complete trivia, lead is not the only material that flows; glass is another. Thickness measurements have been done on very old window glass and the bottom of the glass has been found to be slightly thicker than the top.
While trying to figure out how old our house I had come across this rumor and found it to be false. www.cmog.org/article/does-glass-flowOur house was built in the 1860s and a lot of the windows are cylinder glass.
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Post by 2030vision on Aug 11, 2014 1:20:24 GMT
I think maybe the reason the leads that Chris has tinned are still tight is because being a technical person he probably pays more attention to good workmanship practices and tins only enough to hold the strands together instead of flooding the strands to the point of obliteration !
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Post by ChrisJ on Aug 11, 2014 2:08:33 GMT
I think maybe the reason the leads that Chris has tinned are still tight is because being a technical person he probably pays more attention to good workmanship practices and tins only enough to hold the strands together instead of flooding the strands to the point of obliteration ! I usually twist them tight using needle nose and then tin with solder. I also tighten the screw down pretty tight. I suppose in the end just twisting the wire tight with needle nose alone would be enough. I'm surprised to hear that is considered unacceptable for milspec equipment. I may have to change how I do things!
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Post by ChrisJ on Aug 11, 2014 2:09:18 GMT
While trying to figure out how old our house I had come across this rumor and found it to be false. www.cmog.org/article/does-glass-flowOur house was built in the 1860s and a lot of the windows are cylinder glass. How interesting! Thanks for that link - a most interesting read. I'd only heard about it from a work colleague who always used to come up with all sorts of scientific trivia. I must say it sounded quite believable at the time. Many many people believe that about glass. I was also surprised to find out it wasn't true.
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Post by 35ckmonitort on Aug 16, 2014 0:27:53 GMT
Well, today power was restored to the garage! Come to find out, it wasn't a rat, mouse or anything that chewed the wires. A month or so ago the laundry room wasn't draining well... And they had to take up a section of concrete next to it to get at the pipes leading into the laundry room. Well, our kind landlord remembered he must have cut a little too deep and probably nicked the conduit where the wires ran into the breaker box. So, he came by and fixed it. So, we have power again! And right now the DR-2 is plugged in, allowing the heater to warm up and later tonight I'll switch her back on and have refrigeration in the garage again.
By the way, I managed to find a green drip dish for the DR-2. Looks pretty nice in there. I'll snap a shot or two and post them soon.
=Rob
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Post by 35ckmonitort on Aug 17, 2014 19:46:26 GMT
Well, I figured it was time to post some photos. This discussion has gone on long enough without any current photos! So, here we go! Enjoy! I recently found the green dish at a local antique shop. I'm not 100% sure it's genuine GE, no GE logos or branding on it, but it sure looks the right shade of green from all the illustrations from the 20s. At any rate, the last photo you can see the thin layer of ice forming. I know these DR's are fussy but damn, if there isn't just something about those enameled oven type evaporators... Am I right???
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Post by 2030vision on Aug 18, 2014 10:48:32 GMT
NOW THAT YOU ARE SPOILED YOU ARE GOING TO HAVE TO GET ONE WITH TWO OVEN EVAPORATORS !!!
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Post by 35ckmonitort on Aug 18, 2014 17:05:44 GMT
Ha! I know right? Well, down the road when my wife and I buy a home (and it will have to have a nice garage) I'll probably find away to purchase a double door, dual pig DR machine.
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Post by 2030vision on Aug 19, 2014 10:20:44 GMT
THE 1920'S STUFF STILL HAD THAT "MACHINE AGE"LOOK TO IT AND I THINK THAT IS PART OF THE APPEAL,THE DRS ESPECIALLY.YOU ARE A LUCKY ONE TO HAVE THIS BUT YOU DESERVE IT..YOU "GET IT" AS FAR AS I AM CONCERNED!
YOU KNOW,THERE WILL NOT BE A HEARSE FOLLOWING US TO THE GRAVE WITH OUR STUFF SO SOMEONE ELSE WILL EVENTUALLY TAKE PROUD OWNERSHIP OF THE THINGS WE HAVE SAVED FOR FUTURE GENERATIONS. YOU HAVE SAVED ANOTHER ARTIFACT OF HISTORY. THERE IS NO HIGHER TRIBUTE TO PAY TO THOSE WHO HAVE GONE BEFORE USE THAN TO SAVE EXAMPLES OF THEIR CRAFTSMANSHIP...TAKE GOOD CARE OF HER!!!!
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Post by 35ckmonitort on Aug 19, 2014 17:13:59 GMT
I agree with you completely! I've been smitten with antiques since I was 8 1/2 years old. Started with a passion for railroads and steam engines. Started to sell grapefruit from our tree to bike up to a local antique mall to purchase old kerosene lanterns. The dealers in that store were flabbergasted to see a boy of 9 obsessed with old lanterns. By age 11 I bought a small potbellied stove! And a few years alter, I started to collect antique radios. It was when I was about 14 or so I saw a '34 CA or '35 CK Monitor Top at this antique store. I was intrigued to learn it was a refrigerator. I wanted one but, being a teen with no say in what appliances were to be had in the house, I told my self when I have my own place, that's what I'll use. Now I own two. :-) and they're simply incredible machines. The more I learned about them, the more I was impressed and amazed. Last night some friends came over. I took them to the garage and they were so impressed how quiet the DR runs. My friend's daughter who's in her late teens couldn't believe it. Was telling her father that she wants a Monitor Top! Good thing my friend loves old stuff too!
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Post by 35ckmonitort on Sept 17, 2014 17:11:31 GMT
UPDATE.
Well, the ol' DR has been running great. I've had it plugged in and running since we came back from a weekend in Arizona in August.
The weather here has been pretty warm and the garage is anything but cool. Well, if the Monitor Tops in Death Valley during the 30s could manage 125oF heat, then my ol' DR will be just fine in our 100oF weather. It's been hot this past weekend and continues to be! I want fall weather to arrive.
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