[Public-List] V berth water tank
David Terrell
dterrell1 at charter.net
Wed Jul 24 18:00:51 PDT 2013
Jason
I do put water tablets in each tank load.
David
On Wed, Jul 24, 2013 at 9:48 AM, Jason S wrote:
> Thanks for answer...I have read that many people use west system on
> water
> tanks......I would think a water tablet and filter would take out
> most
> contaminants. Especially if water water was not left sitting for long
> periods...I have those same cracks, but wondered more about sealing
> out gel
> coat....I may try it.
> On Jul 24, 2013 8:59 AM, "David Terrell" <dterrell1 at charter.net>
> wrote:
>
>> Jason
>>
>> I did some epoxy coating - there were hair line crack- crazing. I
>> did not
>> slather it up with many coats of epoxy. I used regular west marine
>> epoxy.
>> I was not concerned because I do not plan to drink the water. And,
>> honestly, I do not know if there is a real problem with what I used.
>> I
>> would be very interested in being enlightened on this topic by anyone
>> in
>> the know on this.
>>
>> David
>>
>>
>> On Sun, Jul 21, 2013 at 8:45 AM, Jason S wrote:
>>
>> Dave,
>>> Did you coat inside of tank.
>>> .if so with what type of epoxy
>>>
>>> Jason
>>> #457 Salacia
>>> Www.svsalacia.blogspot.com
>>> On Jul 21, 2013 7:39 AM, "David Terrell" <dterrell1 at charter.net>
>>> wrote:
>>>
>>> I did what George did and the result is excellent. I do not see a
>>> need
>>>> for further changes. I used starboard for the top. Pictures and a
>>>> description are posted on the web site.
>>>>
>>>> David 432
>>>>
>>>>
>>>> On Sat, Jul 20, 2013 at 4:40 PM, George Dinwiddie wrote:
>>>>
>>>> Bill,
>>>>
>>>>>
>>>>> On 7/19/13 10:07 AM, Bill Newman wrote:
>>>>>
>>>>> My No. 233 is a non liner boat that I have owned for about 12
>>>>> years.
>>>>>> The water tank is fibreglass and is I believe, tabbed to the
>>>>>> hull.
>>>>>>
>>>>>>
>>>>> The usual arrangement is a tank that uses the hull and some laid
>>>>> up
>>>>> glass
>>>>> to form the bottom and sides. The top was generally a sheet of
>>>>> aluminum
>>>>> bedded and pop-riveted across the flanges of the sides.
>>>>>
>>>>> The usual problems are that
>>>>> 1. the fiberglas becomes saturated with water and slowly leaches
>>>>> into
>>>>> the water
>>>>> 2. the aluminum corrodes, flaking white aluminum oxide into the
>>>>> water
>>>>> 3. the pop-rivets start to leak
>>>>>
>>>>> Originally it had no inspection port so later I made one and
>>>>> found a
>>>>>
>>>>>> very moldy plastic bladder inside the tank. I removed this and
>>>>>> thoroughly cleaned the interior of the fibreglass tank and used
>>>>>> this
>>>>>> for a few years until it began to leak. I then cut a larger
>>>>>> opening
>>>>>> into the top and installled a bladder which does not conform well
>>>>>> the
>>>>>> the shape of the tank. If it is completely filled it bulges out
>>>>>> the
>>>>>> opening and leaks some water no matter how well the fittings are
>>>>>> tightened. The result is that I cannot carry a lot of water with
>>>>>> this arrangement. I do not use the tank for drinking or cooking
>>>>>> just
>>>>>> for washing myself and the dishes. I am thinking of temporalily
>>>>>> removing some of the furniture from the v berth, then making a
>>>>>> cardboard mock-up of a tank that fits the space and taking this
>>>>>> to a
>>>>>> tank maker to have it fabricated. I am thin king of having this
>>>>>> made
>>>>>> of aluminum because there are several companies who will do this
>>>>>> and
>>>>>> a mold is not required. I expect my experience is not unique.
>>>>>> My
>>>>>> question is. has anyone had any experience replacing the water
>>>>>> tank
>>>>>> under the v berth and if so any advice or information about how
>>>>>> to
>>>>>> proceed and the results will be much appreciated.
>>>>>>
>>>>>>
>>>>> I would not recommend using aluminum. Like the original aluminum
>>>>> top, it
>>>>> will oxidize and flake white aluminum oxide into the water.
>>>>>
>>>>> The usual fix for the water tank is to
>>>>> 1. remove the furniture
>>>>> 2. remove the top of the tank
>>>>> 3. clean the tank well
>>>>> 4. coat the fiberglas walls with epoxy
>>>>> 5. put on a new, non-aluminum top (high-density polyethelyne or
>>>>> reinforced epoxy sheet) bedded with good caulk, and using
>>>>> self-tapping
>>>>> screws instead of pop-rivets
>>>>>
>>>>> If you do this and add a charcoal filter, you should have water
>>>>> suitable
>>>>> for drinking.
>>>>>
>>>>> Of course, you still need to clean the inside occasionally through
>>>>> a
>>>>> port
>>>>> on the top, and you may want to dose with chlorine (plain chlorox)
>>>>> when
>>>>> you
>>>>> fill the tank.
>>>>>
>>>>> - 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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