Join Date: Feb 2000
Location: Annapolis, Md
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Having had a boat with a Gori Prop, I would have to agree in part with the poster in assigning some blame to Gori.
For the most part, even in warm salt water areas like Florida, the zincs on my boats have generally lasted at least a year. My current boat has a martec and conventional shaft; and although I swap them out regularly as a preventative measure, the zincs will typically last close to two years here on the mid-Chesapeake.
But, the zincs used with Gori props tended to be thinner and have less metal in them and so seem to have a very short lifespan. On my last boat typically less than a year here on the Chesapeake and so I would expect much less in full salinity water.
But unless Gori advised someone of this in advance there would be no way of knowing to expect such as short lifespan out of their zincs and so as the OP pointed out, this is a serious design flaw. That said, from what I gather I don't believe that Flex-o-fold is any better.
With regards to YachtDivers comments, to partially quote him, "anybody that thinks no zinc should ever last more than 90-120 days is an idiot and has no idea of what they are talking about." But of course that did not stop him from spouting off without bothering to read the post.
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Curmudgeon at Large- and rhinestone in the rough, sailing my Farr 11.6 on the Chesapeake Bay
Last edited by Jeff_H; 12-17-2010 at 04:26 PM.