[Public-List] Stephen Gwyn Water Tank follow-on question

[John Irving via Public-List]

My 1979 A-39 has a water tank in the v berths with an aluminum top fastened to angles attached to the hull.  I'd rather not have the aluminum top, but my present mode has th boat at the mooring most hours in the week.
John Irving
Scotch Bonnet, #634

> On Nov 14, 2016, at 4:36 PM, Wes Gardner via Public-List <public-list at lists.alberg30.org> wrote:
> 
> Mine's up in the V...obviously.  Don't know how the f/g top is actually
> fastened to the hull.  Maybe this is original???  If I were fabricating
> one, I'd just glass it into the hull a then install a large inspection port
> like mine has.  Or, if you wanted the entire top to be removable, create a
> lip (like a hull-to-deck joint) and fasten the top down to that.
> 
> https://www.dropbox.com/s/akin9anucmr78sj/Fresh%20water%20tank%20inspec.jpg?dl=0
> 
> On Mon, Nov 14, 2016 at 4:14 PM, Jonathan Bresler via Public-List <
> public-list at lists.alberg30.org> wrote:
> 
>> Folks,
>> 
>> Regarding potable water.  Have been thinking about one or more integral
>> tanks.   Nigel Calder in his tome writes of installing an integral tank in
>> the part of the bilge between the settees and that the wine glass shape of
>> our hulls is ideal for this.   James Baldwin has installed an integral tank
>> in the v-berth.  Neither describes how to seal the top of the tank to the
>> body of the tank.  Both describe how they built the tank....install pipe to
>> withdraw water, install passage to allow any water from the chain locker to
>> run to the bilge, paint the bottom and side with epoxy, smooth it out well,
>> install baffles (Calder uses solid fiberglass, Baldwin uses epoxy coated
>> plywood), paint the tank with BrewCoat or other FDA approved material,
>> attach the top, install fill and vents, install inspection ports.
>> 
>> Thoughts ?
>> 
>> How does not attach the top so that it will be water tight and smoothly
>> connected so that one can clean the inside of the tank throughly ?
>> 
>> Jonathan
>> 
>> On Fri, Nov 11, 2016 at 9:09 AM, Michael Grosh via Public-List <
>> public-list at lists.alberg30.org> wrote:
>> 
>>> Potable is a moving target. I don't like eating food cooked in aluminum
>>> cookware, but by most standards it's still edible. Aluminum oxide is the
>>> sand and it is pretty stable chemically. Aluminum has been linked to
>>> Alzheimers,  but that finding has been challenged.
>>> MichaelGrosh
>>> #220
>>> 
>>> On Nov 11, 2016 6:53 AM, "Bill McCoy via Public-List" <
>>> public-list at lists.alberg30.org> wrote:
>>> 
>>>> About a year ago you posted your fabulous work for the water tank on
>> the
>>>> site. One question regarding the tank in general:  Have you any
>>> information
>>>> for those of us who may wish to clean our Aluminum tanks, vis-a-vis
>>>> products to use which are effective in eliminating the "sand" of the
>>>> insides etc.?
>>>> 
>>>> 
>>>> I've investigated mine and took photos to see that despite this "sand"
>>>> which I'm told is due to deterioration, it does not leak and is quite
>>>> serviceable for a washing water tho not potable.
>>>> 
>>>> 
>>>> Skeep
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>> 
>> 
>> 
>> --
>> Jonathan M Bresler
>> S/V Constance Alberg 30 #262
>> Annapolis/Eastport MD
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