Corrosion on Prop

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   My boat has been in the water for about 8 months now and my diver is telling me that he is starting to see some corrosion on my prop.  According to Gori, the prop is not designed to have a zinc, but I am thinking that it might help.  Is anyone using a zinc to protect the prop?  
Thanks!
Vance

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Vance Newell Members Profile Send Private Message Find Members Posts Add to Buddy List Crew Joined: 23 April 2015 Status: Offline Points: 27	Post Options Post Reply Quote Vance Newell Report Post Thanks(0) Quote Reply Topic: Corrosion on Prop Posted: 14 February 2016 at 1:43am
	My boat has been in the water for about 8 months now and my diver is telling me that he is starting to see some corrosion on my prop. According to Gori, the prop is not designed to have a zinc, but I am thinking that it might help. Is anyone using a zinc to protect the prop? Thanks! Vance

Bill Layton Members Profile Send Private Message Find Members Posts Add to Buddy List Commodore Joined: 15 September 2002 Location: Canada Status: Offline Points: 551	Post Options Post Reply Quote Bill Layton Report Post Thanks(0) Quote Reply Posted: 14 February 2016 at 8:16am
	Every prop gets some corrosion near the geared part of the blades, even in fresh water. So this is common. It's not bad enough to cause a problem and many boats are still running their original prop without issue. Is this what you have?

frfletch Members Profile Send Private Message Find Members Posts Add to Buddy List Commodore Joined: 13 May 2008 Location: Canada Status: Offline Points: 365	Post Options Post Reply Quote frfletch Report Post Thanks(0) Quote Reply Posted: 19 February 2016 at 2:47pm
	Are you in seawater or fresh. In any case, the zinc is more to protect your saildrive leg than the prop. Do not remove it nor let it corrode to nothing or you will have a much bigger problem. I agree with Bill that a surface deterioration to some point on your bronze propeller is not going to become an issue.

Vance Newell Members Profile Send Private Message Find Members Posts Add to Buddy List Crew Joined: 23 April 2015 Status: Offline Points: 27	Post Options Post Reply Quote Vance Newell Report Post Thanks(0) Quote Reply Posted: 21 February 2016 at 12:21am
	I am in seawater. I have been told that our harbor is pretty active as far as corrosion. I will check with the diver to get more details and maybe have him take some pictures next time he is down there. There is no corrosion on the saildrive and the saildrive zinc is there. I also have an external "fish" zinc that is wired to the saildrive dipstick. Thank you for the advice!! Vance

frfletch Members Profile Send Private Message Find Members Posts Add to Buddy List Commodore Joined: 13 May 2008 Location: Canada Status: Offline Points: 365	Post Options Post Reply Quote frfletch Report Post Thanks(0) Quote Reply Posted: 21 February 2016 at 9:28am
	For living in sea water you are looking great. Just fix that leak.