[Public-List] Bulkheads

[George Dinwiddie via Public-List]

Make that http://alberg30.org/gallery/main.php?g2_itemId=912

I'd forgotten the 2013 photos were in the Gallery, and re-uploaded them 
to a web page. I'm going to delete the second copy.

  - George

On 2/5/16 10:50 PM, George Dinwiddie via Public-List wrote:
> Michael,
>
> On 2/5/16 8:01 PM, Michael Connolly via Public-List wrote:
>> All the documented A-30 rig/mast failures to date in normal sailing
>> conditions have been from four components, 1) rotten bulkheads which
>> in turn cause the chain plates to rip out and bolts to fail. 2) the
>> threads in the bronze turnbuckle bodies failing,  3) failures of the
>> original copper Nicropress swages or other terminals on the wire and
>> 4) broken spreaders.  George and Mike L if there are others please
>> chime in.  It would be good for all of us to know all the known
>> examples of how A-30 rigs have failed. To my knowledge rigs have not
>> failed because of broken chain plates, stem head fittings, back stay
>> fittings or masthead/tang fittings. Even though there is a need to
>> inspect chain plates for SS crevice corrosion cracking, I have not
>> heard of a rig failure on an A-30 due to strictly chain plate
>> failure.
>
> If you look at
> http://alberg30.org/pictures/CanAm2013/20130921_123632-DSC_0876.jpg
> you'll see that there are no bolts in the chainplate. This indicates
> that the bolts failed, rather than the bulkhead. That's why it's
> important to upgrade from the original 1/4" bolts.
>
>   - George
>

-- 
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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.                          also see:
                'The Middle' by Ogden Nash     http://idiacomputing.com
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