Sacrificial Anodes

richb1967 · Aug 24, 2013

I work as a design engineer in oil and gas, specialising in subsea equipment. Bought a 90 truck cab last last week and love it. I had a thought that the subsea equipment I design uses sacrificial zinc anodes which reduce the rate of corrosion of carbon steel and stainless steel structures whilst deployed on the bottom of the sea. Has anyone tried fitting anodes to the chassis of a Land Rover to reduce the rate of corrosion? For the price of a couple of anodes I think it's worth bolting them onto my chassis to see if it helps slow corrosion on my 90.

Thor1950 · Aug 24, 2013

wont work unless submerged into sea water

Ltwt Hybrid 300tdi · Aug 24, 2013

+1, Will work in freshwater, as on my narrowboat! I think it's magnesium for freshwater and zinc or aluminium for saltwater.

richb1967 · Aug 24, 2013

Thor1950 said:
wont work unless submerged into sea water

When the underside is wet with salt water from gritted roads in winter, is this not the same?

bencorkill · Aug 24, 2013

richb1967 said:
When the underside is wet with salt water from gritted roads in winter, is this not the same?

No harm in trying it, no real way to tell if its working or not, what you need is 2 90z one with and one with out

hahaha!

richb1967 · Aug 24, 2013

bencorkill said:
No harm in trying it, no real way to tell if its working or not, what you need is 2 90z one with and one with out hahaha!

I would love to have another 90, but it took me 21 years to persuade the wife I needed one, doubt she'd agree to a second one!

Thor1950 · Aug 24, 2013

richb1967 said:
When the underside is wet with salt water from gritted roads in winter, is this not the same?

NO

Read this and you will understand

Galvanic anode - Wikipedia, the free encyclopedia

timtheenchanteruk · Aug 24, 2013

this was posted a while ago...
Think the technical answer is thet there needs to be water between the two metals for it to work,

we do have sactrifical metals on landys, looked at the bottom of the doors recently

Thor1950 · Aug 24, 2013

timtheenchanteruk said:
this was posted a while ago...
Think the technical answer is thet there needs to be water between the two metals for it to work,

we do have sactrifical metals on landys, looked at the bottom of the doors recently

correct.....

richb1967 · Aug 24, 2013

Oh well, I'll start saving for a galvanised chassis then:0)

bencorkill · Aug 24, 2013

richb1967 said:
Oh well, I'll start saving for a galvanised chassis then:0)

Thats probably best option, one day id love to build a defender up on a galv chassis

Rattlegun · Aug 24, 2013

A galvanised chassis uses sacrificial anode theory, but its enveloping all the steel everywhere instead of being a lump on the side, as the seawater isn't there to act as the bridge

Sacrificial Anodes

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