How to Sweeten Up Combat Rims

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w30bob
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How to Sweeten Up Combat Rims

Post by w30bob »

Hi Guys,

Well, my quest to find a set of reasonably priced combat rims for my M hasn't been going so good. I got one from someone here on the forum and that one looks pretty good. It needs to be de-rusted, but it's apart and I think I can save it. I also found two out in Pennsylvania which I bought for $50 each with the expectation that they might just be junk when I get them apart......but I couldn't just walk away and let them sit out in the elements for another 70 years....or get scrapped. I still haven't gotten them apart despite the best efforts of myself and my mechanic buddy, who up to now could fix anything. So at this point I'm going to cut the tires off and go to plan B. But first I have to have a plan B.

So for my plan B I'm going to try something I've read about and seen on YouTube quite a few times.............molasses. They say it'll de-rust anything, just take s a bit of time, so I'm gonna give her a whirl with the rusty rim I have apart. If it works I'll put the other two in and hope it will allow me to get them apart them. So I stopped by the Henyard today, an Amish feed store, and picked up 5 gallons of their best molasses. The cost was $17 and I'll get $5 back tomorrow when I return the container. I did a bunch of reading about the correct water to molasses ratio and as usual.....it's all over the map. Most said about 9 gallons water to 1 gallon molasses, but there were other opinions. I ended up using a 4:1 ratio. I wanted it as strong as possible yet still cover the whole rim with a bit of extra on the top if it evaporates.

You can see in the pics below I just happen to have the perfect sized plastic container to do this in.......got it from work when no one wanted it. Figured I could us it for electrolysis or sink it in the backyard and make a goldfish pond. :D So I dumped the 5 gallons of molasses in followed by 10 gallons of water, mixed it up, and put the rusty rim in. Still needed more water to cover it. 10 more gallons did the trick. I must say....it sure smells good and the cats licked every drop I spilled on the driveway. My hands still smell like gingerbread cookies.

So the rim I expect to be good is soaking in the sweet stuff. I'll check it in a few days and post some pics. I expect it will take a week or so.......but since my mixture is stronger than most it may be a quicker turnaround. If it doesn't work I guess I'll be baking Christmas cookies early this year. :mrgreen: If anyone has tried this method I'd be curious as to your results.

And for those out there who feel that messing with old rusty combat rims is a waste of time and possibly unsafe (and you know who you are)........I fully respect your opinion and will say now that you're probably right. You're reading this post and making that funny face my Dad makes when I choose not to follow his advice. But like my Dad you know perfectly well that some people only learn by making mistakes, and you'll be proven right in the long run without having to tell me "you told me so". I respect that. But half the fun in life is in the experience, not the result. So this may all be a futile effort and a waste of time and molasses, but I know that going in. Worst case I blow $12, end up with junk rims, and have hands that smell like molasses for a few days. Could be worse........remind me to tell you about my previous plan B that involved hydrochloric acid (Muriatic acid), burned skin, and that look from my Dad when I told him I got some in my eye and wasn't wearing eye protection. :shock:

So stay tuned.............I'll let you know how this goes! Hopefully the results will be SWEET!

regards,
bob

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RMS
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Re: How to Sweeten Up Combat Rims

Post by RMS »

I have a few guy's playing with molasses in my yard, I was impressed with the results I saw on a once red rusty pot belly stove.

just keep an eye on it, the time it takes to change over from removing rust to depositing Iron or something back on to the item seems unpredictable

looking forward to the results
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Re: How to Sweeten Up Combat Rims

Post by w30bob »

Hi Guys,

Well.......being impatient I just had to see how things were doing in the tank. The rim has been soaking for about 19 hours. On the internet everyone says not to expect to see any change in the first day or two, so I wasn't expecting much. Although it's not very clear in the pics......the change already has been pretty drastic. I just pulled the outer rim out, so as not to make a big mess in the driveway, but most of the rust is already gone. So it's not done.....but this method looks rather promising. And I really do like the smell. :mrgreen:

Check it out......first pic is the "before", second pic the "after".

regards,
bob

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Re: How to Sweeten Up Combat Rims

Post by refit1701 »

You could also try the electrolysis method, with that large of a tank.
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Re: How to Sweeten Up Combat Rims

Post by w30bob »

Hi John,

Yes, that's what I was envisioning for this tank.....electrolysis. The only reason I went with the molasses method first is that I hear with electrolysis it's a "line of sight" thing, so I'd have to keep re-orienting the rim to get at all the rust. I just figured with the molasses you put it in and forget it.......so I'm trying the lazy way first. The other issue I have with the other two rims is I can't get the outer rim separated from the inner. With electrolysis I can't get a "line of sight" to the rusted space between the rims, so I figure for this application the molasses may work better. But I will get to the electrolysis and let you guys know how that works.

regards,
bob
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Re: How to Sweeten Up Combat Rims

Post by k8icu »

Bob,

I'm wondering if you need to clean the rim after you've tanked it for a few days? Good old water or do you use something else like denatured alcohol? I'm also wondering if you need to wire brush any of the parts. With the other rims if you cut the tire off completely you may be able to take a BFH and wrap the rim to bust it loose. Or tank it and see if it gets in between the two pieces enough to make it come apart. Joe
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Re: How to Sweeten Up Combat Rims

Post by Tuko »

At restaurant supply molasses is $14 a gallon around here :shock:
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Re: How to Sweeten Up Combat Rims

Post by w30bob »

Hi Guys,

It's been 5 days since I put the rim into the sweet stuff......so it's update time I guess. I pulled the inner and outer rim out of the tank, hosed them off with the garden hose and let them dry before I took the pics. I gotta say I'm not real impressed so far...but I've been spoiled by Evapo-Rust....so maybe my expectations are too high. And I haven't waited as long as I guess I need to. It's just that I expected more progress. It's working, but it's gonna take some time. So back in the tank it went and I'll check it again on the weekend.

Tuko, from what I've read there's two types of molasses....the food grade stuff you buy in the store (or restaurant) and the kind used to mix with animal feed to sweeten it up. I was told I needed to use the animal kind, as it has sulphur in it. Apparently the kind you get at the supermarket does not......and probably costs more to make. I'll have to look when I go to FoodLion and see what molasses costs.

Talk to you this weekend............same Bat time, same Bat channel. :D

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Re: How to Sweeten Up Combat Rims

Post by Tuko »

That probably explains it, good luck with it working out!
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Re: How to Sweeten Up Combat Rims

Post by k8icu »

You know what they say. Slow and steady wins the race.
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Re: How to Sweeten Up Combat Rims

Post by greeno »

This would be a sweet setup for electrolosys. With a wee bit of thought you can get your annodes all around these rims and not worry about the line-of-sight problem (and trust me, its a problem. electrolosys doesn't work well on gas tanks with baffles).
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Re: How to Sweeten Up Combat Rims

Post by k8icu »

Bob anymore luck or info with this sticky setup?
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Re: How to Sweeten Up Combat Rims

Post by w30bob »

Hi K8,

Sorry for not updating.....it's been raining here the last few days (and we need it), so I haven't pulled that puppy out of the slop to take a look. If the rain lets up tomorrow or Saturday I'll check it out. My buddy got one of the two rusted combat rims I brought to him apart.....so hopefully the one in the molasses is done and I can put the next lucky rim in there. There also working to fix the sandblaster at work, so if the sweet stuff turns out to not work well I can still get them clean.

I was looking around on the web for other ways to remove rust (it's one of my favorite topics) and ran across a few folks talking about Oxalic Acid. Anybody messed with that stuff for rust removal??

regards,
bob
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Re: How to Sweeten Up Combat Rims

Post by w30bob »

Hi Guys,

Update time. It'll be 3 weeks tomorrow that I've had my rim soaking in the molasses. Supposed to rain tonight and tomorrow so I'm updating now. Went out this morning and pulled the rim out of the stuff, hosed it off, dried it with a towel.....and took these pics. I didn't wire brush or do any other prep.

So.....what's the verdict? Sort of a mixed bag I guess. At least not to me, based on what other methods accomplish. The first pic is from before I started this process...so you can compare the before and after. In some areas like the outer rim it looks pretty good. Most of the rust is gone. But on the inner rim, especially on the outside.....I'm not impressed. Considering that I used a higher molasses to water ratio than most recommended I expected better (and quicker). On the flip side the temps here at night are down in the high 50's to mid 60's.....so to be fair this process probably works better in hotter temps.

But overall, compared to the results I get with Evapo-Rust the molasses bath isn't even close. At least not on the rim I tried. Evapo is much faster, and removes all the rust. It's just way too expensive when you're talking gallons and gallons. I'll try soaking other things, as I have big vat of molasses just sitting in my driveway......but my hopes aren't high. I'll bring the rim into work and sandblast it, then see what I have. After a few more parts try the molasses bath I'll convert it to an electrolysis tank and give that a whirl. Feel free to comment on this stuff.....maybe you had better luck, know a better process, or see something I've done wrong. :D

thanks,
bob


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Re: How to Sweeten Up Combat Rims

Post by k8icu »

Bob,
If you have access to a media blaster then blast the rims and be done with them. That one looks like it has a lot a life left in it and blasting them would be a zip zap and done. Just my $.02 worth.

Keep us posted on how they eventually come out.

Joe
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