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Author Topic: Zinc life  (Read 2643 times)

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Lance Jones

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Zinc life
« on: May 16, 2014, 04:05:53 PM »

Ok, I have had the boat in Saltwater since March, should the zinc already be sacrificed away this quickly??
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Lance Jones
1988  C-34 Kitty's Cat
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Jim Hardesty

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Re: Zinc life
« Reply #1 on: May 16, 2014, 05:28:41 PM »

Zink life has all to do with electrical conditions.  Sounds like you or some thing arround you is charging up the water.  May not be a good idea to go in the water.
Jim
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Jim Hardesty
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Ken Juul

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Re: Zinc life
« Reply #2 on: May 16, 2014, 07:38:09 PM »

Yes.  Zinc's go so much faster in salt water than fresh.  In the brackish water of my marina in the Chesapeake they usually last a season.  3 months  in salt water on the trip south, diver checked while he was doing a neighbors boat....said it was totally gone.
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Ken & Vicki Juul
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mregan

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Re: Zinc life
« Reply #3 on: June 02, 2014, 12:53:06 PM »

If you were getting 3 months out of 1 zinc, would you get 6 months if you installed 2?
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Stu Jackson

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Re: Zinc life
« Reply #4 on: June 02, 2014, 03:36:24 PM »

Assuming that's not a facetious question, no.  It's not linear.
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Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

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mregan

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Re: Zinc life
« Reply #5 on: June 02, 2014, 06:08:26 PM »

It was a serious question.  Would you get longer than 3 months or would both deteriorate in 3 months?  Usually get 4 maybe 5 months with a zinc.   Some years keep the boat in the water during the winter.  Was just wondering if I installed 2 zincs, could I get the remaining 7-8 months out of them?
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Stu Jackson

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Re: Zinc life
« Reply #6 on: June 02, 2014, 06:20:15 PM »

As Ken Juul said, it depends on the water you're in, the "activity" of boats around you, and in some cases the phases of the moon!   :abd:  I've been in the same marina with the same neighbors (pretty much) for the past 16 years and have seen significantly various zinc longevity.  There simply is no way to tell in advance, hence, a diver service is very useful, 'cuz if your zincs are gone and you don't know it, guess what happens?  A diver service will deal with one zinc, two ain't gonna make it any better, and the point could be made that one zinc deteriorating rapidly and being noticed is more beneficial than trying to "hide" a situation with more zincs.
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Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

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Terry Forshier

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Re: Zinc life
« Reply #7 on: June 04, 2014, 12:54:33 PM »

I added a galvonic isolater in my boat to stop eating zincs. I was putting on 2 thinking it would last longer. Not the case. I asked the owner of the "yard" here who said he thought that adding extra zinc accelerated the problem. Just what happened to me.
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