Zincs, mine vs. dock mates...
- Thread starter H2ONUT
- Start date
Madifonzo
New Member
- Sep 30, 2013
- 716
- Boat Info
- 2005 280
Zodiac Zoom 310 9.9 Honda
- Engines
- Twin 5.0 MPI with Bravo III Drives
I would ask how the outdrives look.
Henry Boyd
Well-Known Member
- Apr 24, 2007
- 6,014
- Boat Info
- ‘09 Sabre 38 Hardtop Express “Serenity”
- Engines
- Volvo D6 w/IPS450 Pods
'Zincs' come in aluminum, magnesium, and zinc. What is used depends on water type and to some extent the metal below the waterline on specific boat. Your neighbors may be using a different metal anode. And let's face it the purity of zincs is not always what it should be.
Henry
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Henry
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mwph
Well-Known Member
- Jul 8, 2008
- 3,229
- Boat Info
- 1998 250 DA
- Engines
- 7.4L, B3
From my limited experience, I would be concerned that something is amiss on your end.
If your sacrificial anodes aren't being "sacrificed" it could be for any nimbler of reasons. Did you purchase & install them yourself? If not, how well do you trust the shop guys? Any chance the used the wrong type? If your are certain that the right metal was used I guess you have to start checking that everything is bonded correctly.
Again, limited experience, but it sounds like something isn't right.
If your sacrificial anodes aren't being "sacrificed" it could be for any nimbler of reasons. Did you purchase & install them yourself? If not, how well do you trust the shop guys? Any chance the used the wrong type? If your are certain that the right metal was used I guess you have to start checking that everything is bonded correctly.
Again, limited experience, but it sounds like something isn't right.
H2ONUT
Well-Known Member
Exactly what I was thinking. I installed them myself. I use aluminum since I am in brackish water. I have then on the prop shafts, rudders, trim tabs and the transom. I can post some pics next weekend of mine vs the others. I help haul the boats and pressure wash them in our marina. It just hit me today that mine are perfect, almost brand new and the others are pretty well pitted of basically gone.
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With outdrives, there's a bunch more metal sticking down in the water - which could easily explain the reason why your neighbor's anodes are shot. If their drives are in good condition, then the anodes are doing their job. It's possible that your neighbor's have an inactive Mercathode system (if their boat has that feature) and the anodes have been pulling double duty. But, ultimately, anodes are, as the name implies, sacrificial. In your case, if your underwater gear is good shape, I wouldn't worry. Just keep doing whatever you're doing as it's working for you.
belliswood
Member
- Nov 21, 2011
- 320
- Boat Info
- 1996 370 SUNDANCER
NAME: DAWG HAUS 3
- Engines
- 7.4 EFI 454
V-DRIVES
I treat my boat as if it is in saltwater even though it is in brackish water. The salt content changes through out the year based on rainfall and the amout of freshwater entering the area. My Zinks get pretty bad each year and I change them out. If you are using zinks for fresh water in the brackish enviorment you may want to change them.
