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Zincs in freshwater

 
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qman15
"TWINS"
Spring Lake, MI
1991 GB CL 46
Supporting Member

Joined: 04 Oct 2006
Posts: 80
The big Lake Mishegame

PostPosted: Mon May 21, 2007 5:44 am    Post subject: Zincs in freshwater Reply with quote

What's your experience in changing your zincs in freshwater?

I pulled a number of zincs and they all appear to be in pretty good shape.

So, how long do your zincs last in freshwater?

Thanks for sharing your experience, Jim

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Tom Overs
Little Ship
Portavadie Scotland
1973
Supporting Member

Joined: 24 May 2002
Posts: 2906
England

PostPosted: Mon May 21, 2007 6:49 am    Post subject: Reply with quote

Jim

You should be using Zinc in Salt water and Magnesium in fresh, neither of them work correctly outside of their design scope.

Have a read on this site and it should answer your questions.

www.mgduff.co.uk/leisure-craft/hull-anode-selection/

All the best

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John Gadow
At Ease
Kenosha, WI
1987 GB-42CL

Joined: 08 Jun 1999
Posts: 155
Madison, WI , USA (home port - Kenosha, WI)

PostPosted: Mon May 21, 2007 8:19 am    Post subject: Reply with quote

In principle, I agree with Tom's recommendation on type of zincs for fresh water. In practice, we change our zincs about every 3 years, just for fun. Fresh water is very kind to metals which would suffer in salt water. Before launch this Spring, the techs at our marina looked at our two year old zincs and pronounced them good for another year. That being said, we did change zincs several times during our Great Loop trip.
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