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post #1 of 4 Old 06-24-2002 Thread Starter
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Propeller coating

OK, I thought that I would tap the vast amount of experience out there in regard to the need to coat a prop or not.

I just put on a new bronze prop. The boat''s dock is in fresh water, and it sails in salt water (weekends/week tops in salt).

I have heard a few different suggestions, but so far no one has been convincing as to wax, paint or the lack of either.
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post #2 of 4 Old 06-24-2002
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Propeller coating

In past seasons we''ve found our speed under power diminishes as the season progresses and barnacles form on our prop. This year we wanted to put antifouling on it, but ran out of time. Launching hour arrived before the epoxy barrier undercoat had had time to cure, following the initial metal etching coat. So we have paint on the prop and strut, but not antifouling. Maybe next year. The thing to avoid is simply painting antifouling directly onto the prop, since this sets up an electrolytic situation that can end up turning the prop into swiss cheese and cause imbalances that can wear out the cutlass bearing.
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post #3 of 4 Old 06-25-2002
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Propeller coating

We''ve always antifouled our prop but this year we listened to those who warn against such practices. We cleaned and polished the prop and lowered it naked and sparkling into the water.

That was three months ago. We''ve just come out briefly to deal with a seacock and found the prop getting worryingly gungy and riddled with barnacles.

Next year we''re going to try some form of prop-specific lacquer.

All the best

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post #4 of 4 Old 07-24-2002
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Propeller coating

I am in the process of purchasing my first inboard diesel. Have always had outboard.
I always used an atifouling paint from West marine that comes in a spray can and is made for outdrives, outboards etc.
I always install a new zinc prior to painting and tape it off so no antifouling gets on it or under it. So far so good.

I suppose from reading these messages this is a different situation?
Would not the zinc on the shaft protect it????

I am very curious as it is being hauled out for a survey.
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