Antifouling Prop & Shaft

[Foolishness323]

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.

[clayton]

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?

[bbracken]

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.

[nauticalrich]

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.

[GordMay]

Copper based paints cause damage.

[edguy3]

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.

[T37Chef]

Pettit Barnacle Barrier Zinc Spray

[T37Chef]

Also, see here: http://www.sailnet.com/forums/gear-m...tml#post544606

[edguy3]

Thanks. (not sure how I missed that topic in my search.)

[7Psych]

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.