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Anybody Recognize This Coating on UW Metals?

Discussion in 'Props, Shafts & Seals' started by CaboFly, Sep 16, 2020.

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  1. CaboFly

    CaboFly Member

    Joined:
    Aug 24, 2018
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    94
    Location:
    Seattle
    That clean. Cold water and stored under cover so lots of shade. Back of props get some growth as does back of transom from light coming under door.
  2. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    8,974
    Location:
    Satsuma, FL
    All good.
    I hate shaft log cutlass bearings..

    I remember working on some couplings after other shops did a supposed alignment;
    Please keep note that Island Packet power cruisers and ole Striker yachts have a cutlass bearing in the shaft log.
    You must really move an engine around with a wet toothpick to get that coupling properly flat.

    I learned a lot, the hard way, working on my best customers above boats to get them rite.
    When a shaft log bearing is used, ZERO tolerance must be achieved on alignment.

    Never under stood the need or headache but they were there.
    !cid_01b301d651b0$5a3dc5a0$1401a8c0@RC77.gif
  3. mapism

    mapism Senior Member

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    776
    Location:
    Sardinia
    'Salright, but are you positive that there shouldn't be one?
    I've seen boats with an identical shaft thru-hull setup, but with a bearing inside it.
    How close is the gearbox coupling, from that point?
  4. CaboFly

    CaboFly Member

    Joined:
    Aug 24, 2018
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    Location:
    Seattle
    Not sure the exact number but the distance is pretty short. Can't imagine that not being how they all came from factory.

    Attached Files:

  5. Capt Ralph

    Capt Ralph Senior Member

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    Dammmm, that is a pretty picture.
    No need for a bearing in the shaft log there.
  6. mapism

    mapism Senior Member

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    Aug 9, 2008
    Messages:
    776
    Location:
    Sardinia
    Agreed, considering the very short distance.