Zinc Or Aluminum Anodes On Mid Chessie - Page 3 - SailNet Community
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post #21 of 25 Old 03-11-2013
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Re: Zinc Or Aluminum Anodes On Mid Chessie

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You are somebody's neighbor too. Using your logic, that means you are the source of his problems.

When it comes to rapid zinc depletion and corrosion problems, everybody likes to blame the other boats around him. My experience, however, is that the most likely source for these issues is to be found aboard your own boat. That's where you should look first.

BTW- "electrolysis" is not something floating in the water. Further, it is not even the correct term for a common form of metal corrosion in boats.

Actually, I've never had a boat in a marina, so no - I'm not someone else's source, ever.

I agree, I should have said galvanic corrosion when speaking of zinc vs aluminum, not electrolysis.
HOWEVER - What I really meant was stray current corrosion, which is why I advised getting an isolator for that. (it was a early morning post).

Here's a article that backs up my "other boat" claim says that the main source of it is from leaks further away, not on your own boat.
BoatUS - BoatTech - Types of Marine Corrosion

Page down to the stray current paragraph.
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post #22 of 25 Old 03-14-2013
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Re: Zinc Or Aluminum Anodes On Mid Chessie

Good Old Boat has an awesome article on building your own galvanic isolater this month.

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post #23 of 25 Old 03-16-2013 Thread Starter
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Re: Zinc Or Aluminum Anodes On Mid Chessie

I received in the mail and installed my aluminum anodes this past week, BIG difference in weight (Not that the weight difference will result in anything). From all the technical articles I read this is the best choice in brackish water. I should have posted this in the general Interest to get a bigger audience and see what some of the response would be out of our area. I think it might be a good idea to research a subject first instead of just throwing it out here on Sailnet. Maybe it's cabin fever but people seem a little touchy.

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post #24 of 25 Old 03-17-2013
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Re: Zinc Or Aluminum Anodes On Mid Chessie

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Maybe it's cabin fever but people seem a little touchy.
Yep!
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post #25 of 25 Old 09-11-2013
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Re: Zinc Or Aluminum Anodes On Mid Chessie

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As I was about to order a prop anode for our boat I saw 3 choices, zinc, aluminum and magneseum. I know mag is strictly fresh, I've always used zinc and never gave it a second thought but in reading up on it I see aluminum alloy is recomended for brackish water which is what the mid Chessie is. Now I'm thinking on ordering the prop anode in aluminum as well as replacing the shaft zincs with aluminum as well. So now it's time to dip into the wealth of knowledge here and ask for input and experience. Any thoughts?
Reviving this old post. Those that used aluminum this year instead of the traditional zinc sacrificial anodes..any difference noted so far?
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