This release contains bug-fixes and other changes aimed at improving stability and addressing outstanding issues.
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I am replacing my shaft anode on a fresh water sailboat. What metal provides the best protection, Al or Mg?Garry 2018-03-26Definitely Magnesium. They will offer more protection in fresh water thanaluminum. 2018-03-26lucid484In fresh water, Magnesium is recommended because it is less noble than Aluminum.
I saltwater, use Al. 2018-03-27jms707Looking at the galvanic table, magnesium is the least noble metal and therefor should provide the most protection. I had a zinc anode for 4 years priorto last year when I installed a magnesium anode. The magnesium anode hadcorroded in one year as much as the zinc did in 4 years.
2018-03-27crotunn1Not an expert but Mg has been working for me. 2018-03-29mahoney195For fresh water, we recommend magnesium. If you are in brackish you may want aluminum. 2018-05-31JD Tech Associate Does it matter if the anode is on the shaft in the bilge, or must it be in the water?tom rayThomas H Ray 2015-01-17For the anode to work it needs to be exposed to an electrolyte. So yes it must be in the water.
2015-01-17JOHN ERIDONNeeds to be in water. 2015-01-17JAMES RUSSELLThanks John. I thought so, but needed some professional comments. 2015-01-18Thomas H RayAnodes must be in the water.
Shaft anodes are installed near the strut. The anode protects submerged metal parts on your boat from corrosion.From Wikipedia: 'They are made from a metal alloy with a more 'active' voltage (more negative reduction potential / more positive electrochemical potential) than the metal of the structure. The difference in potential between the two metals means that the galvanic anode corrodes, so that the anode material is consumed in preference to the structure.'
For more information, I suggest you Google 'How to install anodes on a boat.' 2015-01-17HALDON SWINEHART.
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