[Public-list] bronze rudder post replacement

[George Dinwiddie]

brooks.glenn at comcast.net wrote:
> Any idea how long, on average,  the pin takes to wear down?

I don't know about average.  I guess it was about 15 years from when I 
first put in a bolt to when I replaced it.

> Also is it possible galvanic corrosion contributes to the wear,
> between dissimilar pieces of bronze?  My lower and gudeon shafts look
> extremely corridoded as if electrosis got to them, whereas the
> adjcent bronze shoe and gudeon are in perfectshape.

Likely the "bronze" pin was really "naval brass."  Mine seemed to be, 
and it had turned to copper sponge at the end where the zinc was gone 
after 30 years.

> I am thinking of bonding the shafts together in my new rudder and
> installing a zinc to extend life...

I think you're worrying too much.

-- 
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   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.
                'The Middle' by Ogden Nash
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