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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 04-21-2003
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Antifouling Prop & Shaft

I just finished scraping and sanding a season''s worth of barnacles off the bronze propeller and shaft on my boat. Any advice on antifouling coatings for a prop/shaft. I know most antifouling paints are a no-no on bronze. The few paints I''ve seen made specifically for props or drive shafts are for aluminum and I''m not sure if they are appropriate for bronze.
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Old 04-24-2003
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Antifouling Prop & Shaft

I''ve used Pettit Antifouling Blue, (with copper), on my bronze prop and ss shaft for years. I''ve not noticed any damage from electrolysis.

Anybody else out there with a comment?
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Old 04-27-2003
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Antifouling Prop & Shaft

more than a year ago the sailnet website recommended a barrier coat on my prop and shaft before applying anti fouling paint. Of course I leave untreated space for the zinc. I have had much better success than without the barrier coat. No damage either.
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Old 04-28-2003
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Antifouling Prop & Shaft

Are you guys saying that some paints can cause damage? If so what paint should you not use?

Of course I am aware that you do not paint the surface where the zincs are attached.
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Old 04-28-2003
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Antifouling Prop & Shaft

Copper based paints cause damage.
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Old 12-06-2009
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Question

This thread is a bit dated. Any updated suggestions for coating the prop and shaft?

Here are my before and after pictures:

June 2009


November 2009:

In addition to the sea fauna, you can see black caulk where the strut had been reattached mid-season from a Delaware bay crab trap fouling.

Time to get out the power washer and new Zincs.
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Old 12-06-2009
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Pettit Barnacle Barrier Zinc Spray
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Old 12-06-2009
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Also, see here: barnacles on prop, shaft
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Old 12-07-2009
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Thanks. (not sure how I missed that topic in my search.)
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Old 12-07-2009
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Any one try Prop Glop? I've used Prop Speed with excellent results, but it's prohibitivly expensive. Prop Glop seems new to market and much less expensive.
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