 | Home > Maintenance & Modifications > Electronic rust prevention |
 
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785   
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Has anyone heard of this before? Not sure if it you work, seems a bit dubious to me
2002 90 Td5 Station Wagon 1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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25th Apr 2015 9:50am |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
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heard about such things , but never seen one or heard anyone whos tried one
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25th Apr 2015 9:54am |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785
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I suppose it makes sense, they changed from positive earth vehicles because of accelerated rust if I'm not mistaken? 2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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25th Apr 2015 10:15am |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785
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According to the video, it ranges between 200-400 volts, this I assume, is easier and less power hungry to achieve with ac rather than dc? 2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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25th Apr 2015 10:21am |
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| LRmud Member Since: 22 Oct 2014 Location: IV12 Highland Posts: 198  
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Sounds like rubbish to me. Avoid. --------------------------------------------------------------------------------------------------
1989 Defender 90 Toyota Aygo & Honda FR-V |
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25th Apr 2015 11:08am |
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| JWL Member Since: 26 Oct 2011 Location: Hereford Posts: 3443 
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Be a good start to theft prevention
 Perhaps up it to 1000V |
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25th Apr 2015 11:27am |
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| grafty99 Member Since: 15 Aug 2012 Location: North Devon Posts: 4785
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Well they put sacrificial anodes on boats so perhaps something like that would work?
And no, the bodywork shouldn't be a sacrificial anode  2002 90 Td5 Station Wagon
1990 Vogue SE Triumph Tiger Explorer 1200 Td5 90 Thread http://www.defender2.net/forum/topic50767.html Tdi 110 Thread https://www.defender2.net/forum/topic69562.html RRC Thread http://www.defender2.net/forum/topic54492.html Instagram http://www.instagram.com/george_grafton |
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25th Apr 2015 11:34am |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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I work in the marine industry and whilst sacrificial anodes and galvanic isolators are very, very effective of reducing (not preventing) corrosion I can see perhaps a slight flaw when it comes to Defender application as did Nevillerover. A boat sits in water which is a perfect earth and conductor. The Defender is manufactured from different materials which quite often can be difficult to find an earth at the same potential as the battery earth. With the application/fitment olf this gismo should the entire vehicle not be at the desired potential will the panels/areas not at that potential possibly be subjected to increased corrosion as a result? All pie in the sky and speculative I know.
Ultimately all any corrosive process needs is two different potentials, moisture and oxygen. Using the correct fasteners, isolating 'bolt ons' with gasket or wet assembly with a decent sealant and of course waxoyl or Dinitrol to prevent oxidisation is still the most proven and effective method along with regular monitoring for any deterioration. If you go through life with your head in the sand....all people will see is an ar5e!! Treat every day as if it is your last....one day you will be right!! |
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25th Apr 2015 2:06pm |
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| gilarion Member Since: 05 Dec 2013 Location: Wales Posts: 5109  
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I have just had my narrow boat hull blacked with Two Pack Epoxy, while it was in dry dock I asked about the anodes and what they were for and got the same answer as you gave K9F. Although through interest I looked them up on the internet and got this good description.
If two metals are in a conducting liquid, i.e. water, and connected together a current will flow between them. This is how a battery works. As water is a poor conductor the current will be very small, but as it is there 24 hours a day, 7 days a week the cumulative effect can be significant. On a boat with brass skin fittings, a brass propeller and even slightly different grades of steel can all effectively become the plates of a battery and as metal will be removed from one side by going into solution to release the electrons, corrosion will occur. This is the dreaded “galvanic corrosion” that gives rise to pitting. I did not have to have them replaced on my boat as the condition of them was good. For those who like Welsh Mountains and narrow boats have a look at my videos and photos at.. http://www.youtube.com/user/conwy1 |
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25th Apr 2015 4:15pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Really???  If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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25th Apr 2015 6:03pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2109  
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^^^^^^^
Yep, Gilarion is rigth Water itself is considered non conductive (do the test with deionized water). But if you put salt in it is another history. More salty more conductive. So you have more possibility to conduct electricity in sea water than in a tap water. Ultra pure water can have 5.5 · 10-6 S/m Tap water have 0.005 – 0.05 S/m and Sea water have 5 S/m Anyway those values are not too much compared with the cooper with 5.96×10+7 S/m But on the other side is more than rubber 1x 10−14 S/m and teflon 1 x 10-23 S/m Cheers Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo"  Click image to enlarge |
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25th Apr 2015 8:32pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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That'll be salt water then.......  If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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25th Apr 2015 11:25pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2109
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Yep K9F, but the point is not the water itself is the salt that contains
For this reason cars used near the sea and when salt is used in the roads are more propensive to rust than the ones used inlands in more warmer climates. Cheers Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo" Click image to enlarge |
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26th Apr 2015 3:30am |
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| Buccaneer Member Since: 11 May 2014 Location: London/Kabul Posts: 148 
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I have used vehicles that pass a current through them on a perm basis to indicate whether something has been attached to the vehicle. Anything that is attached disrupts the field on the car and flashes up something has been attached. The Rules:-
1 Buccaneer comes back alive. 2 Chicks dig scars. GB260 |
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26th Apr 2015 4:45am |
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