[C320-list] Was leaving list, now zinc question for Orlando

[Kirk McCullough]

The zinc will corrode even without providing any anodic protection. If there 
is no current path from the strut to any other part of the boat, the zinc 
will provide no protection against corrosion on any or all parts of the 
boat, but it will corrode all on its own in sea water.

Kirk McCullough

Boomerang #124

----- Original Message ----- 
From: <bruceheyman at cox.net>
To: "C320-List" <c320-list at catalina320.com>
Sent: Friday, December 15, 2006 2:27 PM
Subject: Re: [C320-list] Was leaving list, now zinc question for Orlando


> Orlando,
> Cool, did you ever see one of the zinc's that came off the strut?  If was 
> eroded then there must be an electrical connection some where.
> Bruce
> Sent via BlackBerry from Cingular Wireless
>
> -----Original Message-----
> From: Orlando.Duran at AveryDennison.com
> Date: Fri, 15 Dec 2006 13:46:01
> To:"Catalina 320 List" <C320-List at catalina320.com>
> Subject: Re: [C320-list] Was leaving list, now zinc question for Orlando
>
> Hull #112 was delivered to me by the deale (H&S Yachts in Newport Beach, 
> CA) with the strut pre-drilled and a zinc attached so I just continued to 
> do it....
> ----------------------------------
> Regards,
> OD
>
> Sent from my BlackBerry Wireless Handheld
>
>
> ----- Original Message -----
> From: "Bruce Heyman" [BruceHeyman at cox.net]
> Sent: 12/15/2006 01:05 PM
> To: "'C320-List'" <c320-list at catalina320.com>
> Subject: Re: [C320-list] Was leaving list, now zinc question for Orlando
>
> Wes etal,
> I do not have a zinc on my strut and did not see a place to affix one.  I
> suppose it would not be hard to drill and tap a couple of holes, tap them
> and install a zinc. That said I'm not sure why you need one.  Some 
> builders
> bond everything metal that is in the water (through hulls, strut, shaft,
> keel...) to a central location including the engine and rigging.  My last
> boat was that way.  We didn't have a zinc on the strut then either as the
> conventional wisdom was that it was electrically boded to the shaft and 
> the
> zinc's (we always kept two) on the shaft were close enough to keep it
> protected.
> I just checked on our 320 (hull #671) it would appear that the strut is
> electrically isolated and hence does not need a zinc.  Is there a 
> connection
> that I'm not seeing?
> Thanks,
> Bruce
> Somerset 671 SoCal
>
> -----Original Message-----
> From: c320-list-bounces at catalina320.com
> [mailto:c320-list-bounces at catalina320.com] On Behalf Of
> Wes.Giles at averydennison.com
> Sent: Thursday, December 14, 2006 11:26 AM
> To: C320-List
> Subject: Re: [C320-list] Was leaving list, now zinc question for Orlando
>
> Jon,
>
> I always had two on my 320 in So Cal (marina del rey). The strut and the
> shaft. I know have one on the prop and one in the water on my 387.
>
> Wes
>
>
>
> jonvez at comcast.net
> Sent by: c320-list-bounces at catalina320.com
> 12/14/2006 10:02 AM
> Please respond to
> C320-List <c320-list at catalina320.com>
>
>
> To
> C320-List <c320-list at catalina320.com>
> cc
>
> Subject
> [C320-list] Was leaving list, now zinc question for Orlando
>
>
>
>
>
>
> Orlando,
>
> You say you used a zinc on the strut of CL2? Just curious as to why since
> it would be an isolated piece of metal? You have me concerned now since I
> have never protected the struts on either my 30 or 320....
>
> As for the other questions, our marina has no problem with divers and I
> have the diver check and clean the bottom in the middle of the summer.
> Never have had an issue with my shaft zinc--it's the prop zinc that I need
> to watch.
>
> I used 2 zincs for years, but my diver convinced me to try just one this
> season and after about 7 months in the water, it proved to be just
> right--just about half gone. I use Godfrey zincs which seem to work much
> better than the Canada zincs you find in West.....
>
> Regards,
>
> Jon Vez
>
> -------------- Original message --------------
> From: Orlando.Duran at AveryDennison.com
>
>> John,
>>
>> My dive service routinely replaces zincs as they are wearing out...here
> in So
>> Cal that would be every 4-5 months...on the 320 they would replace the
> shaft and
>> strut zincs and on the 440, I purchased 6 zincs from Flex-O-Fold that go
> on the
>> end of the prop that I will give to the diver so that it will be
> installed as
>> needed...
>>
>> Any reputable dive service should include zincs as part of their overall
>
>> maintenance service for you...
>>
>> Have a great time on the 36! Is delivery eminent?
>> ----------------------------------
>> Regards,
>> OD
>>
>> Sent from my BlackBerry Wireless Handheld
>>
>>
>> ----- Original Message -----
>> From: John Van Vessem [jvanvessem at sbcglobal.net]
>> Sent: 12/10/2006 07:58 AM
>> To: C320-List
>> Subject: [C320-list] Leaving the 320 list
>>
>> To all my friends on the 320 list I just want to say what an educational
>
>> pleasure it has been to read these conversations, I am moving to a 36
> and hope
>> to join their list if they have one. I'm going to miss my 320 it has
> been an
>> incredible boat and the whole reason I'm sticking with Catalina.
>>
>> Before I leave I need to tell you about a recent experience. My 320 was
>> surveyed for the new owner and when we hauled it out of the water we
> found that
>> the bronze shaft had corroded down by about 1/8 inch in diameter, the
> zinc was
>> missing and was only 10 months old. Bottom line I had to spring for a
> new
>> shaft, stainless this time. Replacing the zincs has not been in my
> standard
>> maintenance routine. But after talking to the 320 dealer he suggested
> that the
>> zincs be replaced every couple of months. I'd like to hear what other
> people
>> have experienced who keep their boat in the water all year.
>>
>> John Van Vessem
>> Sojourn 645
>> Vallejo Yacht Club
>>
>>
>> --------------------------------
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>>
>
>
>
>
> --------------------------------
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