actionoptics
Well-Known Member
My fridge keel cooler has two small circular anodes which when new weighed 44 grams. They are now pitted and weigh 33 g after one season. Should they be replaced or will they be effective for another season?
How much wear before an anode needs replacing?
- Thread starter actionoptics
- Start date
dsw
Well-Known Member
WELL IF THEY HAVE ONLY LOST 10G IN ONE SEASON THEY SHOULD BE OK TILL THE NEXT SO YOU MAY ASWELL GET YOUR MONEYS WORTH OUT OF THEM !!
VicS
Well-Known Member
I agree with dsw, although I would not have shouted at you so loudly, You should be able get another seasons use out of them easily. I guess at that size they wont be too expensive so replace them next year.
You can probably cast some new ones from old hull anodes!
You can probably cast some new ones from old hull anodes!
dsw
Well-Known Member
Sorry did,nt mean to shout.
jwilson
Well-Known Member
Dithering myself whether to replace an anode that's about 20% wasted after one year...
Logic tells me that the very irregular pitting has actually increased the surface area exposed compared to a smooth new one.
But as a new anode costs much less than a new fixed prop I ought to change it.
But if the prop goes I have a good excuse for getting a nice feathering one.....
Logic tells me that the very irregular pitting has actually increased the surface area exposed compared to a smooth new one.
But as a new anode costs much less than a new fixed prop I ought to change it.
But if the prop goes I have a good excuse for getting a nice feathering one.....
beserksail
Well-Known Member
I am just fitting one of these systems from Penquin, how do you rate them.
Nos4r2
Well-Known Member
Personally I'd remove the corrosion on the surface with a grinder,cut a few shallow grooves to restore the surface area and re-use it if it's 20% used up. Make sure you wear a good respirator if you do though-zinc flu will make you feel like death for 24 hours if you get a lungful of the oxide.
As far as I know,Zinc oxide doesn't conduct so I wouldn't reuse it unless cleaned up.
As far as I know,Zinc oxide doesn't conduct so I wouldn't reuse it unless cleaned up.
actionoptics
Well-Known Member
Beserksail - we have been very pleasantly surprised by how little current the fridge draws when coupled to the keel cooler plate. The fridge was set to be cold enough to make ice. We have a Nasa battery monitor which took a bit of getting used to. The fridge compressor is quite quiet but at first I noticed when it went on and watched as the monitor displayed 7 or 8 amps drain but only for a short time and not too often ( the drain, not me watching ). The real benefit will be felt when we get down to the Med.
actionoptics
Well-Known Member
Nos4r2 - thanks for that advice. I'll use the Dremel and a wire brush outside in the garden with a face mask.