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post #36 of Old 04-30-2013 Thread Starter
73Morgan
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Re: Using Bottom Paint on Brass Propeller

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Originally Posted by dave6330 View Post
OK - Galvonic corrosion...so I'm a little slow on the uptake....let me get this stright...

1. No paint on the exposed SS prop shaft (just clean it and install a new zinc).

2. Special zinc based paint for the bronze prop? Is this really better than simply cleaning the bronze prop and leaving it bare?

3. And bronze thruhulls - do they need special paint too??? I'm a little cornfused.

Currently "Between Boats" but wanting to stay current (no pun intended).

Dave
Item 1&2, that is the consensus.
Item 3, bronze through halls, you need to strip all paint off the through hall and the area 6 to 12 inches around it, paint that with epoxy paint. The epoxy isolates the area around from electrolysis between the bronze and bottom paint. Then bottom paint over the epoxy.
This has worked well for me, hope to see how other people handle that.

Last edited by 73Morgan; 04-30-2013 at 10:10 PM.
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