[Public-List] shaft zinc

[J. Kingsland via Public-List]

I was thinking about trying the Zinc setup at the end of the shaft on my boat as well. The area where I usually put the zinc, forward of the prop, is too narrow and the custom trimmed pieces of zinc I've attached in the past won't stay on.  

Other than apparently it is not working for you Gordon, has anyone else had success with it?


Gigi Kingsland
PERFECT intentions #146


On May 16, 2017, 5:58 AM, at 5:58 AM, Mike Meinhold via Public-List <public-list at lists.alberg30.org> wrote:
>I would think replacing the shaft nut is your only solution.  Yes,
>connecting a ground wire to a zinc would help temporarily.  Drilling
>and tapping underwater sounds tough- not that replacing the shaft nut
>is easy!
>
>Mike
>
>Michael J. Meinhold 
>meinhold272 at gmail.com / 301 852 0619
>
>> On May 15, 2017, at 10:19 PM, George Dinwiddie via Public-List
><public-list at lists.alberg30.org> wrote:
>> 
>> Gordon,
>> 
>> From your description, I'm guessing you have an ElectroGuard or
>Canada Metal zinc
>(http://alberg30.org/maintenance/MechanicalPropulsion/Zincs/)? Wouldn't
>it be possible to replace the zinc-nut (which the screw threads into)
>while in the water?
>> 
>> - George
>> 
>>> On 5/15/17 9:37 PM, gordon white via Public-List wrote:
>>>  Went to replace the zinc on the end of the shaft today and lo and
>>> behold the old zinc and the socket head screw supposed to hold it
>were
>>> gone. It's been difficult to attach the thing, especially under
>water,
>>> for several years. Now it appears the threads (1/4 - 20?) are
>completely
>>> stripped. I know of no way to fix that without hauling out, which is
>not
>>> on the schedule until fall.
>>> 
>>> 
>>>    There was no apparent corrosion on the prop
>>> 
>>> 
>>>    My current solution is to drop a zinc on a piece of wire
>overboard
>>> and attach the other end to the engine somewhere. Probably will use
>this
>>> system only at my dock, as it probably would be a nuisance under
>way. I
>>> know of nowhere to attach it more permanently.
>>> 
>>> 
>>>    My first idea would be to drill out the hole and tap it to a
>larger
>>> thread, but do not want to go to 5/16 if I can help it. Next idea is
>to
>>> hammer in a piece of brass rod (bronze??) or a bronze bolt and drill
>and
>>> tap that back to 1/4 - 20.
>>> 
>>> 
>>>    Anyone had this problem & how did you solve it?
>>> 
>>> 
>>> - Gordon White
>>> 
>>> Brigadoon II # 275
>>> 
>> 
>> -- 
>>
>----------------------------------------------------------------------
>>  When I remember bygone days                         George Dinwiddie
>>  I think how evening follows morn;            gdinwiddie at alberg30.org
>>  So many I loved were not yet dead,           http://www.Alberg30.org
>>  So many I love were not yet born.                          also see:
>>               'The Middle' by Ogden Nash     http://idiacomputing.com
>>
>----------------------------------------------------------------------
>> 
>> 
>> 
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