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Old 18-11-10, 01:22 AM   #11
Spark
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Yeh I know, I got me hydroxides mixed up with me carbonates:embarassed:
Happens to the best of us sometimes...
I really hope the hopper goes well for you.
Cheers,
Steve.
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Old 18-11-10, 09:16 AM   #12
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It's worth spending a little while reading about electrolysis. The important thing to understand is that the sodium carbonate plays no part in the process. The only reason it is used is to increase the electrical conductivity of the water - you could achieve the same with other solubles, including common salt (although that might be counter-productive!) - you could also achieve the same results but much more slowly, using plain water. If you were to replace the sodium carbonate with ANYTHING else, you would need to be aware of what electrolysing that solution would produce. The good thing about using sodium carbonate is that the waste is not hazardous and can go down the drain. Don't forget that it needs to be done outside - you are still producing hydrgen and oxygen which are flamable/explosive.

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Old 18-11-10, 02:29 PM   #13
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Yes, I didn't want to confuse the issue by mentioning that sodium hydroxide would work (it is in fact used for certain jobs by specialist archaeological conservators) as are other electrolytes and anode materials. Plain water only works because it's not actually pure it has all sorts of stuff floating about in it - deionised water is an insulator and thus a very poor electrolyte. Common salt (sodium chloride) should be avoided because chlorine gas (nasty) will be given off at the anode...
So we're definitely back to the point - a solution of washing soda is the king of electrolytes for our purposes
Oh, and as Martin points out - loads of ventilation!
All this is very nicely outlined in the original links I suggested...

Cheers,
Steve.
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Old 02-12-10, 12:36 AM   #14
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Any idea of the ratio of washing soda to water steve???
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Old 02-12-10, 03:13 AM   #15
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Quote:
Originally Posted by fergie135 View Post
Any idea of the ratio of washing soda to water steve???
Hi Jason,
You don't need much, just enough to make the solution conduct electricity. I looked at some old notes I made - half a mug (1/4 pint) of washing soda in 20 litres of water should do the trick. I did my derusting in a 5 gallon tank, but obviously your hopper will hold a lot less than 20 litres so scale down the soda accordingly.
If you are using a battery charger for the power source and it has a 6volt setting then try that first. If it seems to be taking too long (all day!) then give it a go with 12volts.
The hopper should be connected to negative and your iron electrode inside the hopper is positive. Make sure the iron electrode dangles in the hopper full of soda solution without touching the hopper sides. The current has to flow through the solution... No shorting out.
Plenty of ventilation - Brrr it's cold outside!
There is a nice article with pictures here:
http://www.instructables.com/id/Elec...a-Magic/#step1
I hope this helps,
Steve.
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Last edited by Spark; 02-12-10 at 03:14 AM. Reason: spelling
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Old 03-12-10, 12:48 AM   #16
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Hello steve, i'd been looking at the instructables.com site a while ago,good info on the subject.
My power source will be my battery charger which pumps out 8volts, i think,will have to check it.
To right it's cold steve,haven't done anything on engine for the last week because the garage is freeeezzzzing,it's all ready for a new lick of paint but wanted to get the hopper done first.
Cheers Jason.
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Old 03-01-11, 10:02 PM   #17
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Finally got the time today to try out eletrolytic rust removal on my lister D's water hopper,WOW what a difference. Having never used this method before i took some time do a bit of research first,plus with the help of a few forum members {namely Spark} cheers steve.
Left it running for around 7 hours or so and from the minute i switched the power on it was bubbling away within seconds,i would say it has removed around 80% of the rust,had to take the tap off and get a thin screw driver in there to break up some of the heavy bits of rust.
Drained the hopper probably 4 or 5 times until the water run clear,she's as good as new now.
Jason.
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Old 04-01-11, 01:37 AM   #18
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Excellent news - it has to be seen to be believed doesn't it!
Will your D be making an appearance any time in 2011???
Cheers,
Steve.
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Old 07-01-11, 12:41 AM   #19
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Hope to get to a show or 2 this year with my D steve.
Having never displayed at a show before is there anything i need to know before entering my engine or is it simply a matter of booking a slot and just turning up???
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Old 07-01-11, 02:23 AM   #20
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Basically book a slot and turn up is about right. You will need insurance though and I can recommend the forum insurance scheme, excellent value and easy to do. There's a section on it, contact Peter and cough up the massive three quid and you're in!
http://www.stationary-engine.net/for...ad.php?t=17696
Other than that, prepare to make yourself comfortable for the duration - you know, brewing facilities grub etc. something to sit on and something to keep the rain off if necessary - I take a tent if I can then I can grab a crafty kip if needed.
I'm new to this myself (well, last year) and I'm sure others will have plenty of wisdom for you. Although I've not been before, folk really rate the (3 day) 1000 engine rally near Jodrell Bank. We're fully intending to go for at least a couple of days this year - see you there????

Steve.
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