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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 25 Specific Forum
 Swing Keel Zinc		  New Topic  Topic Locked
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Justin
Admiral

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502 Posts
Initially Posted - 03/26/2009 :  08:28:26  Show Profile  Visit Justin's Homepage
I searched around and found posts on installing a zinc on the swing keel, but I have a couple questions I could not find answers to.
Ok, so I read that ideally you want the zinc installed close to the pivot pin. Some others said closer to the keel cable.

The season before last I installed one on the trailing edge, but if I recall I drilled through the trailing edge more in the middle, maybe a little closer to the keel cable. Now, how much bare iron keel does the zinc need to contact? My marina recommended I grind down to bare metal underneath the zinc and I did a little bit. I don't remember if I put sealant in the hole before I bolted the zinc on, but without it, I'm wondering if the iron will corrode badly. I'm hauling out in a few weeks, so I'll see what kind of condition it is in then. What is the proper way to mount the zinc? Apply sealant? Grind down to bare metal?

Thanks,
Justin
Previous Owner of Sapphire Breeze - 1982 Catalina 25 SK/SR
My sail blog site: https://reveriesailing.com/
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Dave5041
Former Mainsheet Editor

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USA
3758 Posts
Response Posted - 03/26/2009 :  13:33:23  Show Profile
I ground to bare metal for about 1/2 the area of the zinc and sealed the edges and the screw head. Leave the threads clean to insure good elctrical contact. Owner's manual says as close to the oivot as possible, and I put my third fairly close to the attachmen.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.