I have a lot of aluminum machinery hanging off my transom and under the aft portion of my boat. The drives have mounting positions for four good sized zincs each, and the hull has a large sacrificial plate, but the bottom has none. The underside of my boat has two large (18" x 30") aluminum intake grates and four small fins mounted aft, to help the boats tracking. These have no zincs. I don't want to mount any zincs directly to the intake grates for fear of them coming loose and getting shot through the jets. I plan on mounting a few 'rudder' style zincs to the fins. Everything in the boat is bonded back to a large dyna-plate which is permenantly mounted to the hull.
My concerns are these:
The underwater gear shows some small pitting, the fins also show a greater amount of pitting. I have thoroughly cleaned and repainted all of this hardware with Trilux. The intake grate is epoxy coated from the factory with Trilux applied over that. I want to ensure the life of this machinery. Should I attach at least some small form of a sacrificial zinc to every available surface or is that overkill or even detrimental in some way?
The bonding plate is basically a large (18" x 6") zinc and is wearing away. It was installed with thru bolts and 5200 and is never coming off. Are these meant to be periodically replaced? Mine is OK for now, but I can see where it probably should be replaced in the next couple of years.
Here is what I am working with:
Thanks for any input
Dan
My concerns are these:
The underwater gear shows some small pitting, the fins also show a greater amount of pitting. I have thoroughly cleaned and repainted all of this hardware with Trilux. The intake grate is epoxy coated from the factory with Trilux applied over that. I want to ensure the life of this machinery. Should I attach at least some small form of a sacrificial zinc to every available surface or is that overkill or even detrimental in some way?
The bonding plate is basically a large (18" x 6") zinc and is wearing away. It was installed with thru bolts and 5200 and is never coming off. Are these meant to be periodically replaced? Mine is OK for now, but I can see where it probably should be replaced in the next couple of years.
Here is what I am working with:
Thanks for any input
Dan