I fell for it. I watched that video twice trying to find where you dealt with the heavily rusted piece in the teaser picture.
I've tried the coke and tin foil on rustier pieces than the one in the video and was disappointed, but I guess I was asking for too much. Electrolysis on the other hand.... that it is like magic.
.05%. The concentration is about 500x weaker than a mild rust remover, Coke is basically a lubricant - your simply scrubbing off the rust with the foil.
Coke’s concentration of phosphoric acid is too low to release rust let alone convert it to black iron phosphate.
The black/grey stuff in the video is aluminum oxide and nothing to do with coke - you get the same byproduct with water. The reaction is between aluminum and iron oxide (rust).
.05%. The concentration is about 500x weaker than a mild rust remover, Coke is basically a lubricant - your simply scrubbing off the rust with the foil.
Coke’s concentration of phosphoric acid is too low to release rust let alone convert it to black iron phosphate.
The black/grey stuff in the video is aluminum oxide and nothing to do with coke - you get the same byproduct with water. The reaction is between aluminum and iron oxide (rust).
Coke’s concentration of phosphoric acid is too low to release rust let alone convert it to black iron phosphate.
The black/grey stuff in the video is aluminum oxide and nothing to do with coke - you get the same byproduct with water. The reaction is between aluminum and iron oxide (rust).
So... trying to spell this out slowly because concussed brain no fast think...
You're saying the black ooze is from aluminum rubbing up on rust, not from the coke mixing with the rust, is that correct?
If so, I might have to go back out and retry this on the next rusty bike in the garage... luckily there are many **** boxes in there for me to choose from lol
From the research I did, yes it would work but you don't want to use vinegar...
(Science words go here, yata yata yata), so I think with vinegar there is a chance it will "flash rust" again... BUT coke will actually magically turn the old rust into a protective barrier instead of just dissolving it, because of (more science words go here).
Google it though if you're curious! These things are beyond my metal mental capacity scope right now.
I fell for it. I watched that video twice trying to find where you dealt with the heavily rusted piece in the teaser picture.
I've tried the coke and tin foil on rustier pieces than the one in the video and was disappointed, but I guess I was asking for too much. Electrolysis on the other hand.... that it is like magic.
Yep. I think that's why the poor man's de-rusting of a motorcycle tank, if you don't want to spend money on the actual acid, is to just pour coke in there.
So... trying to spell this out slowly because concussed brain no fast think...
You're saying the black ooze is from aluminum rubbing up on rust, not from the coke mixing with the rust, is that correct?
If so, I might have to go back out and retry this on the next rusty bike in the garage... luckily there are many **** boxes in there for me to choose from lol
Yep. I think that's why the poor man's de-rusting of a motorcycle tank, if you don't want to spend money on the actual acid, is to just pour coke in there.
Vinegar is the cheapest and safest for derusting a tank. 24 hours, $5 bucks of Walmart white vinegar does it. Just be sure to neutralize the tank either way clean water, then spray in some WD40 to avoid flash rust.
I'll lend you my totally redneck kit if you want! $5 old-school Mastercraft charger from a garage sale (modern ones won't work), box of washing soda, rebar, jumper cables, and a rubbermaid bin. I'll see if I can find some pictures I took. Tons of videos out there, but in real life it's even cooler. It makes a mess, but it's fun to watch the bubbles coming up and seeing little rusty looking particles appearing. And way cheaper than Evaporust.
I considered vinegar but apparently if you leave it in too long, it's no bueno. Electrolysis supposedly doesn't pose the same problem.
Electrolysis is another easy solution for rusty stuff. I would never do it on a tank as it will bubble away any paint that’s got a sliver of rust behind it.
Arm and hammer washing soda (sodium carbonate) at 1tbsp/4l of water in a tub. Connect a 12v 10a -20a power supply ( old style battery charger - not a car battery). You need some scrap clean steel (no stainless) as your anode, several flat bars placed around the rusty part, not touching. Flat stock work better than rounds, you’re looking for surface area.
Attach positive to the anode, negative to the rusty part using a bit of copper wire.
It can take a couple of hours for a lightly rusted item, 24 hours for a really rusty part.
This method is better than acids as it doesn’t attack the base metal, only eats the rust.
I use this on rusty frame parts, hardware, tools, and stuck fittings if I can fit them in a tote.
BTW - Full disclosure, I know next to nothing about electrolysis. I know there are lots of guys here way more knowledgeable than I. I know @Mad Mike suggested vinegar when I started thinking about derusting my tank and I did go out and buy a bunch of jugs of vinegar; at the end I just didn't want to babysit the process like I had read I might need to.
I looked for my photos of the electrolysis experiments I did last year. I thought I had a decent before and after set of pictures, but I don't. I don't know what I was thinking.
BTW - Full disclosure, I know next to nothing about electrolysis. I know there are lots of guys here way more knowledgeable than I. I know @Mad Mike suggested vinegar when I started thinking about derusting my tank and I did go out and buy a bunch of jugs of vinegar; at the end I just didn't want to babysit the process like I had read I might need to.
I looked for my photos of the electrolysis experiments I did last year. I thought I had a decent before and after set of pictures, but I don't. I don't know what I was thinking.
No babysitting. Dump it in, 24 hours later dump it out. Immediately neutralize by flushing the tank with water, blow out the tank with some compressed air, shoot in WD40.
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