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White crusty mineral deposits on my props and shafts

Discussion in 'Chris Craft Roamer Yacht' started by wrectec, Jun 15, 2005.

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  1. wrectec, Jun 15, 2005
    #1
    wrectec

    wrectec New Member

    Joined:
    Jun 15, 2005
    Messages:
    1
    Location:
    senaca lake n.y.
    I have had these deposits for several seasons. I wire brush them before put in and by hual out they are back. Senaca Lake N.Y. home port. CC alum Roamer. Any ideas??
  2. Garry Hartshorn, Jun 15, 2005
    #2
    Garry Hartshorn

    Garry Hartshorn Senior Member

    Joined:
    Jun 14, 2005
    Messages:
    504
    Location:
    Directly above the center of the earth
    Not familular with your area but would suggest it is calcium deposits from marine organisims not a big problem but can usually be resolved with antifouling which depending on usage wears of propeller tips quite quickly but will usually stay on the shaft and the hub of the prop.
  3. alloyed2sea, Jul 8, 2005
    #3
    alloyed2sea

    alloyed2sea Moderator

    Joined:
    Jan 28, 2004
    Messages:
    872
    Location:
    Alex, VA
    Surface corrosion

    Hmmm,..., could also be very slight electrical current differences generated by props vs. rudders vs. hulls - all connected to your shaft bones. Some folks use circular wire brushes on the shafts on the inside of the hull to "bond" them to the hull bone.
    Anybody else got the details?