Fuel tank de-rusting

I've been trying to find Deox-C in Australia. None of the usual suspects (hardware and paint shops) stock it or any equivalent product. I went to a car paint specialist and he told me that citric acid is used in the production of heroin, so its sale to the general public is now restricted to very small quantities - little packets as food additives can be bought in the supermarket. Also, buying phosophoric acid (an alternative rust remover) is getting to be a problem because it can be used in drugs and making sarin gas. You can only get it in dilute solutions (<35% concentration). Similarly, you can only buy dilute oxalic acid, not the crystalline stuff that I used to buy in tubs to clean my boat with.

You can't even buy cold medication at the chemist without showing your driver's licence and getting third degree. Apparently pseudoefedriene can be made into speed or some bloody drug.

For christs sake we've got terrorists buggering up air travel and now bloody druggies stuffing up our ability to buy odrinary stuff.

What next? Sorry sir, you can't have salt on your chips, sodium and chlorine can be used to make chemical weapons you know.

Fuck me!
Cam
 
Dellortoman said:
You can't even buy cold medication at the chemist without showing your driver's licence and getting third degree. Apparently pseudoefedriene can be made into speed or some bloody drug.

For christs sake we've got terrorists buggering up air travel and now bloody druggies stuffing up our ability to buy odrinary stuff.

What next? Sorry sir, you can't have salt on your chips, sodium and chlorine can be used to make chemical weapons you know.

Fuck me!
Cam
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I know what you mean Cam, I sent my 12 year old niece out the other day to buy a large Bowie knife, 20 Silk Cut, a bottle of gin and some rat poison and the manager of the local store wouldn't serve her. Bloody nanny state... I suppose I'm going to have get off my arse and buy my own condoms now, by the way, can you test them for me? 
 
Spub said:
There is a company here in California that makes a citrus based rust solvent called "Rusteco". I bought a 5 gallon drum and used it on my Jota and 900SS tanks. Cleaned both spotlessly clean, and this stuff does not attack the metal. One way to permanently fix the problem after cleaning is to Caswell the inside of the tank.

Tried a couple hand fulls of very short drywall screws when I had to remove a failed tank lining on my Norton Commando. Scrubbed out the inside of the tank, and roughed it up also so a new coating of Caswell could adhere to the inside.
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Spub, Did the Rusteco attack the paint at all?

Ed
 
bob said:
I know what you mean Cam, I sent my 12 year old niece out the other day to buy a large Bowie knife, 20 Silk Cut, a bottle of gin and some rat poison and the manager of the local store wouldn't serve her. Bloody nanny state... I suppose I'm going to have get off my arse and buy my own condoms now, by the way, can you test them for me?   
Click to expand...

:D :D

I only test the extra large condoms Bob
 
My original suggestion was to use a cement mixer and a Fine gravel mix to clean the inside of a petrol tank...Classic Bike mag came up the idea .

               IT F''
    KING WORKS A TREAT!!
 
once clean seal with Tapox (Cresswell) dilute,swoosh about drain and leave a compressed air hose in for 1 1/2 hours to dry,ethanol safe ,may well have been said before,friend is having his two stroke 73 Kawasaki two stroke done so I ll watch that space.

llj
 
The Three Dellortos said:
My original suggestion was to use a cement mixer and a Fine gravel mix to clean the inside of a petrol tank...Classic Bike mag came up he idea .

                IT FUCKING WORKS A TREAT!!
Click to expand...

somebody once suggested to use small ball bearings instead of gravel... is less messy and the rinsing is a lot easier because there is no granite dust in the tank
 
Davo said:
Wall or Chest?
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Wall & cherry: http://www.compomat.com/index.php?option=com_content&view=article&id=114&Itemid=57

in dutch: http://www.unicorn-ics.nl/includes/img.asp/id,205/Soft%20Blast_ZP.pdf
translation: Crushed walnut shells and cherry stones
For removing oxides, carbon or other deposits. An ideal product if it is not damaged should be cleaned
be. No extra load of jet waste, this material is environmentally friendly.
Use the following industries.
petrochemicals:
? For cleaning of gas turbines
? Cleaning (rays) of valves, turbines, pumps
electronics:
? SMN 4 / 6, 3 / 6, 6 / 12 can be used for cleaning delicate electronic components
Rubber industry:
? To clean the molds (possibly in conjunction with ultrasonic cleaning)
Miscellaneous:
? In the plastics industry for the leveling of thermoplastic parts
? Remove paint on glass or metal
? In foundries SMN 12 / 3 is used as filler for molds with patterns
 
I was thinking more M6 or whatever steel nuts you have lying around. would do a better job than balls (beer)
 
Dellortoman said:
I've been comparing prices of Deox-C and citric acid (which is what Deox-C is)

In Australia:
1kg Deox-C = $56
1kg citric acid = $7.50

You can buy it on-line.

Here's a handy supplier of citric acid on Alibaba. Note the minimum order quantity  :o
http://www.alibaba.com/product-free/121164428/Citric_acid_monohydrate_99_5_.html
Would anyone like to de-rust an aircraft carrier?
Cheers,
Cam
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The Australian Navy has some other ships that are candidates:

http://www.dailytelegraph.com.au/news/national/navy-all-at-sea-in-rust-buckets/story-e6freuzr-1225998341039

Cheers,

bazzee
 
I'm currently watching a Jap tank that is filled with cheap vinegar and shows promising results after 24 hours of being filled halfway. Today I topped the tank up and the middle hump inside the tank which had a good coat of surface rust washed clean as I filled the vinegar in, resulting in bare metal looking very good :D I suppose the condensation of the vinegar (filler opening sealed off) worked on the rust that is not submerged. I'm going to let the vinegar sit in the tank about 3 weeks and when everything has a greyish look I'll drain the vinegar and report back.

A friend has removed rust from 2 tanks this way and one is still in very good condition internally after 5 years of use, without additional coating.

Regards,
Gerald

 
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