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Old 06-11-10, 01:30 AM   #1
fergie135
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Default Rust removal.

Hi chaps,has anyone got any advice about removing rust from within the water hopper of my 1949 lister d.is there a product i can leave in for a while then flush out to remove the heaviest bits of rust.
cheers jason.
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Old 13-11-10, 01:47 AM   #2
Spark
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Hi Jason,
The best thing to do here (In my opinion) Is to use an electrolytic rust removal technique. Don't be put off by the fancy sounding title - it is fairly simple and uses no expensive parts plus the results are astounding. Here's a website, there are many others:
http://www.davidbradley.net/ERR.html
If you are not sure what's going on then it is an ideal opportunity to learn a little, that (for me at least) is what it's all about.
If you are unsure, give it a go on a bit of rusty scrap first. Prepare to be amazed!
Cheers.
Steve.
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Old 13-11-10, 01:38 PM   #3
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Steve.
Thanks for the link about electrolytic rust removal,feels like you should be adding EYE OF NEWT and TOE OF FROG to the process.
Jason.
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Old 13-11-10, 04:33 PM   #4
oldchadders
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Steve.
Thanks for the link about electrolytic rust removal,feels like you should be adding EYE OF NEWT and TOE OF FROG to the process.
Jason.
This is the method I use for derusting removable parts. In your case I would afix a piece of steel bar (not Stainless or galvanised) to a piece of wood which will bridge the hole in the top of your hopper and fix it any way possible (eg Gaffa tape) making sure the steel bar doesn't touch the metal of the hopper. The reaction is line-of-sight so this should give an even result.
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Old 14-11-10, 08:40 PM   #5
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Yes Jason, You're right about it all sounding a bit like alchemy.... It is though, proper science at work and surprisingly easy to do. Oldchadders suggestion of suspending the cathode (the piece of steel bar which is attached to the + terminal) in the hopper is good and should give excellent results.
The washing soda or lye as the Americans call it is good old caustic soda or sodium hydroxide over here. Care is needed when using - wear gloves and safety specs.
As I say, you will be amazed, it's as good as it gets.
Steve.
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Old 14-11-10, 11:20 PM   #6
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[ATTACH]4996[/ATT
Looks like i should have fun doing mine then steve.
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File Type: jpg P1000162(1).JPG (15.8 KB, 266 views)
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Old 16-11-10, 12:12 PM   #7
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Right then - that's the 'before'. Looking forward to seeing the 'after' when you're done.

Cheers,
Steve.
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Old 16-11-10, 12:46 PM   #8
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The washing soda or lye as the Americans call it is good old caustic soda or sodium hydroxide over here. Care is needed when using - wear gloves and safety specs.
As I say, you will be amazed, it's as good as it gets.
Steve.
NO NO NO! Washing soda is sodium carbonate NOT sodium hydroxide!!
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Old 16-11-10, 01:29 PM   #9
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NO NO NO! Washing soda is sodium carbonate NOT sodium hydroxide!!
You are right - my mistake. Big difference!
Jason Please note - Washing soda!!! It's still called washing soda over here too!

In my defence I've been reading a lot of biodiesel sites recently and have sodium hydroxide (lye) on my mind. Maybe it's soaked in...

Many thanks for pointing out the error.
Still by far and away the best method for rust removal though.
Steve.
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Old 18-11-10, 12:10 AM   #10
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this is how i would have looked if i'd used the wrong product then steve.
Thanks for pointing me in the right direction philipte.
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