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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, Oct 6, 2020
    #21
    CaboFly

    CaboFly Member

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    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, Oct 6, 2020
    #22
    Capt Ralph

    Capt Ralph Senior Member

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    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, Oct 7, 2020
    #23
    mapism

    mapism Senior Member

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    '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, Oct 7, 2020
    #24
    CaboFly

    CaboFly Member

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    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, Oct 7, 2020
    #25
    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, Oct 8, 2020
    #26
    mapism

    mapism Senior Member

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    Agreed, considering the very short distance.
  7. Capt Maritime, Jun 16, 2022
    #27
    Capt Maritime

    Capt Maritime Member

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    The Cabo I'm purchasing has prop speed, however I have never had it on any of my boats. I'm curious of how it holds up over time. Nice stuff but costly.
  8. motoryachtlover, Jun 16, 2022
    #28
    motoryachtlover

    motoryachtlover Senior Member

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    How long it lasts is very dependent on proper application. That said, in my experience 50% of the yards get it right. Some prop shops are applying it now and I would expect their results to be better. I am Luke warm on prop speed. It doesn’t seem to last if you are in shallow water and kicking up sand a lot. I don’t think the prop has to be in sand to wear the prop speed just sand suspended in the water wears it in my opinion.
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