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Old 07-18-2019, 09:29 PM   #21
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I was wondering that too. I've removed all the old heater hoses that were inside the bus and the heaters in the passenger area too. I plan on running the new hoses to the big heater in front underneath along the frame, so several of my holes are about 4 inches across. I don't see how you could patch something like that without putting something in there.
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Old 07-18-2019, 09:44 PM   #22
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Post 1988 pennies are a sandwich made of a piece of zinc between two thin pieces of copper. They are a perfect galvanic reactor and will disappear in less than 2 years if buried in damp soil. The part of the penny that is exposed to the hole in the bus floor will obviously not be exposed to moisture all the time, but the galvanic action will stop when it gets too dry and restart when the moisture comes back.

Also, none of the patches I made for my bus were smaller than an old silver dollar. I made them this size because almost every hole had fairly deep rust pitting around it.

I would never consider using a penny, or any other modern coin to patch holes in a bus floor. When my step-grandfather died in 1976 he had nearly 2 gallons of 1943 steel pennies. Nobody really knows what happened to them. They just disappeared somewhere. That's too bad, because they would work fine for patching very small holes.
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Old 07-18-2019, 09:46 PM   #23
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Yes, a piece of tin can would be far better than a coin, but I'll stick with the galvanized scraps I got quite cheaply from a local sheet metal shop. My patches are all made. I just haven't got them all glued down yet. Too cool here for slow curing epoxy today. Supposed to be 70 degrees and we never got above 64.
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Old 07-18-2019, 10:01 PM   #24
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Post 1988 pennies are a sandwich made of a piece of zinc between two thin pieces of copper. They are a perfect galvanic reactor and will disappear in less than 2 years if buried in damp soil. The part of the penny that is exposed to the hole in the bus floor will obviously not be exposed to moisture all the time, but the galvanic action will stop when it gets too dry and restart when the moisture comes back.

Also, none of the patches I made for my bus were smaller than an old silver dollar. I made them this size because almost every hole had fairly deep rust pitting around it.

I would never consider using a penny, or any other modern coin to patch holes in a bus floor. When my step-grandfather died in 1976 he had nearly 2 gallons of 1943 steel pennies. Nobody really knows what happened to them. They just disappeared somewhere. That's too bad, because they would work fine for patching very small holes.
Damn, my grandmother had 100s of those 1943 pennies, too - they were ridiculously fascinating to me as a kid. They also disappeared somewhere.
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Old 07-18-2019, 10:08 PM   #25
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Yeah, people saved those. They were unique. They made them to save copper for bullet casings, but I never saw anyone have more than George. He had a one gallon wine jug completely full of them, and an identical jug about 2/3 full.

I haven't seen a steel penny for years. I wonder what they're worth now since so many of them seem to have disappeared.
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Old 07-18-2019, 10:12 PM   #26
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Yeah, people saved those, but I never saw anyone have more than George. He had a one gallon wine jug completely full of them, and an identical jug about 2/3 full. I haven't seen one for years. I wonder what they're worth now since so many of them seem to have disappeared.
A quick search says maybe 10 cents for circulated ones, 50 cents or more for uncirculated, up to $10 for mint. It would probably take a really long time to sell a couple of jugfulls, though.
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Old 07-19-2019, 05:10 AM   #27
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Yeah, people saved those. They were unique. They made them to save copper for bullet casings, but I never saw anyone have more than George. He had a one gallon wine jug completely full of them, and an identical jug about 2/3 full.

I haven't seen a steel penny for years. I wonder what they're worth now since so many of them seem to have disappeared.
I've got a roll of steel pennies. Even got one in my change buying smokes one day.
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Old 07-19-2019, 06:59 AM   #28
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Correction:
1982 was the last year Cu slugs were minted, after that the virtually valueless Cu coated Zn slugs were stamped.
I know, inferring pennies are worth anything...
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Old 07-19-2019, 08:56 AM   #29
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Correction:
1982 was the last year Cu slugs were minted, after that the virtually valueless Cu coated Zn slugs were stamped.
I know, inferring pennies are worth anything...
iMi dos centavos!
That penny encapsulated in JB weld will last longer than you. Encapsulated being the key word.
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Old 07-19-2019, 09:04 AM   #30
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That penny encapsulated in JB weld will last longer than you. Encapsulated being the key word.
I have some turn of the century (not millennium) pennies that, being in excess of 100 years old & unencapsulated, are in far better shape than I am!
Not that that's a difficult feat to beat, might wanna raise the bar, some...
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Old 07-19-2019, 09:33 AM   #31
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I'll stick with my galvanized patches, but I am using pennies temporarily in this project.

As I'm gluing the patches down, I'm finding holes I missed at first. So I need a way to mark them. Chalk was my first thought, but I quickly discarded that. My second thought was putting beer bottle caps by holes I missed, but I could not find enough beer bottle caps.

But then I remembered the large antique Chinese brass bowl that sits on the chest of drawyers in my bedroom collecting pennies and nickels.

So I am very pleased to announce that I've been wrong all these years, and pennies are not useless.
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Old 07-19-2019, 11:41 AM   #32
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Put a light under the bus at night and walk the floor, holes will be obvious that you may not have seen in the daylight. I found 20 year old pennies in the bus, all looked untouched. In galvanic corrosion, there has to be disimilar metal and an electrolyte. How does the electrolyte get through the copper first to start the conversion? I used pennies and construction adhesive, I'm not worried at all about any reactions. IMHO JB Weld is too expensive for this process.
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Old 07-19-2019, 11:45 AM   #33
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I'm not sure how it gets through. Maybe because the copper is so thin. But it does get through. I've seen pennies my dad or brother found that were barely recognizable as pennies.


And I found a Canadian twonie in my bus that was slightly corroded. It was in a place that would get wet every winter during the rainy season and then dry out during the dry season. It definitely wasn't wet all the time. I have no idea what twonies are made out of, and don't care enough to look now, but I assume they must be a sandwich.
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