[Public-List] Main Sail Track Fastening

[John Birch]

Tefgel is what Norseman Marine in Fla recommend. I have used it and so far 
everything is good.

ATB

John

----- Original Message ----- 
From: "George Dinwiddie" <gdinwiddie at alberg30.org>
To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
Sent: Tuesday, October 20, 2009 6:04 PM
Subject: Re: [Public-List] Main Sail Track Fastening


> Don Campbell wrote:
>>    If I were having to look for something for this isolation, I would be 
>> hoping to find a thin film in liquid or gel  form with a chemical 
>> attraction that would coat the metals and isolate the metals from 
>> reactions.  It only needs to be several molecules thick.
>
> I have used silicone caulk for isolating stainless fasteners in aluminum. 
> It doesn't do a perfect job in the threads, but otherwise seems to work 
> fairly well--at least, for awhile.  If you can, get the kind that is safe 
> for electronics (doesn't smell like vinegar when it cures).
>
>> There are some materials that the electricians use on aluminum wire for 
>> connections from the grid (usually aluminum wire for cost considerations) 
>> to customers systems that involve a connection to a dissimilar metal. 
>> That is where I would start. These guys play with electrical current all 
>> the time and know the problems only too well when the fire department is 
>> called to put out the fire from the short circuit!
>
> Those gels are more designed to provide good electrical conductivity than 
> to isolate the metals.  The big problem with aluminum/copper electrical 
> connections is that they expand and contract at greatly different rates, 
> breaking the gas-tight contact that is desired.
>
>  - George
>
> -- 
>  ----------------------------------------------------------------------
>   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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