|Topic Review (Newest First)|
|12-21-2009 12:24 AM|
Originally Posted by johnseattle View Post
Zincs are relatively cheap insurance. Why would you even consider trying to forgo that small expense?
|12-20-2009 08:36 PM|
|johnseattle||Is it possible to avoid the need for anodes by simply disconnecting shorepower and batteries while at the dock? Or is the mere presence of dissimilar metals in water enough to case a problem? Thanks, all advice greatly appreciated.|
|12-20-2009 05:13 PM|
I have one of the "fish on a wire" type anodes in addition to the prop shaft zincs. It has a copper clip on the other end which allows me to connect it to my back stay. My back stay is bonded to my engine, all other stays, and all thru hulls. I also have a galvanic isloator installed for when I am on shore power. For two years I have hung the fish over the side when at dock. The first year I did not have the galvanic isolator and all I noticed is some white scale forming on it. This past year it actually had growth on it. I do not think that it really did anything since the currents had to travel through stainless rigging and down a suspect wire. I think that these "fish" anodes are not very effective, but they do offer peace of mind.
|12-20-2009 04:14 PM|
I have just seen an online ad for a Universal Zinc Anode, one that's on a wire that you hang over the side while moored. Presumably you connect the wire to your propshaft, I'm not sure.
On this site I have read Don Casey's words "There is an unfortunate misconception that a sacrificial anode can be mounted anywhere, even hung over the side on a string, and it will still perform its appointed duty. That is dead wrong! For an anode to provide any protection, it must be in electrical contact with the metal being protected."
My question, if anyone can please help, is this: will a free hanging anode work in this way if it is connected by an electrical wire instead of a string? Is anyone using one? (I've tried attaching a photo but keeping getting "invalid file name")