[Public-List] shaft zinc

[George Dinwiddie via Public-List]

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
>

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