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Is It Possible to Over Zinc?

Discussion in 'Technical Discussion' started by FIQ, May 24, 2016.

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  1. FIQ

    FIQ Member

    Joined:
    Feb 19, 2016
    Messages:
    60
    Location:
    Olympia, Wa
    Normally I have 2 zincs on each of my two 2"x 10' shafts.

    One yard guy suggested that I put 3 zincs on each shaft, and another said that it would probably over zinc it.

    What?

    Can one hang too many zincs on a boat?
  2. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,432
    Location:
    Fort Lauderdale
    YES, do not do it. Think of a zinc as a ground. Over zincing it will cause some metals to degrade as well.
  3. dennismc

    dennismc Senior Member

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    Vancouver BC
  4. C team

    C team Senior Member

    Joined:
    Nov 1, 2011
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    Location:
    Kent Island
    I've seen boats in my marina with many shaft zincs and I wonder if that has a detrimental affect on shaft balance?