[Public-List] Pre-liner water tank cover leaking

[Jeffrey]

Thanks Roger,

I like the idea of the backing plate. Gord, thanks for mentioning the
two-halves.  I can picture myself holding a nicely cut ring and
wondering how I would get it through the hole. I guess I could add a
ring to the outside if I have the clearance.

If I glued the backing ring on the top, I could drill shallow holes
and epoxy a nut in each hole, then use machine screws. Or, imbed a
machine screw with the treads up..but might be difficult to lock the
screw in place.

-jeff

On Tue, May 3, 2011 at 11:28 AM, Gordon Laco <mainstay at csolve.net> wrote:
> Great idea Roger.
>
> I have seen kits that come with tanks where the backing material comes in
> two halves so that they can be placed in the tank through the cut out and
> clamped & glued to the inside.  Once the epoxy or whatever kicks off you can
> drill and even tap threads in the backing... The result should be a set up
> where you can put useful torque on the screws.
>
> Gord #426 Surprise
>
>
> On 03/05/11 11:24 AM, "Roger L. Kingsland" <r.kingsland at ksba.com> wrote:
>
>> How about;
>>
>> A), fasten a ring of that plastic wood (Star Board?) underneath so the
>> screws have more to bight into (also gives you a "backer plate" under the
>> bronze cover);
>>
>> or, B), instead of screws, bolt thru the ring putting an EPDM (roofing
>> material) washer w/ an ID slightly less than the bolt diameter between the
>> ring and the hard washer?
>>
>> Roger 148
>>
>> -----Original Message-----
>> From: public-list-bounces at lists.alberg30.org
>> [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Jeffrey
>> Sent: Tuesday, May 03, 2011 11:01 AM
>> To: Alberg 30 Public List -- open to all
>> Subject: [Public-List] Pre-liner water tank cover leaking
>>
>> Hi everyone,
>>
>> Seagrass is a pre-liner boat, and I'm using the original water tank in
>> the port side v-berth. The tank is built in to the hull and has a
>> simple 5 inch hole in the top where a bronze cover is screwed into the
>> top of the tank. Trouble is, small screws into the thin fiberglass top
>> of the tank hold poorly, and we keep getting leaks. If we fill the
>> tank from the outside deck fill we need to be careful to fill the tank
>> no more than 3/4 full or it leaks. I've taken the cover off, cleaned
>> both surfaces, re-gooped with 4200 and reattached the screws and we
>> still get leaks. The screws just don't hold well.  Note that the cover
>> includes the fill pipe, and fittings that lead to the sink.
>>
>> Anyone else go through this? have a fix?
>>
>>
>> -jeff
>>
>>
>>
>> Jeff Fongemie
>> #116 Seagrass
>>
>> http://picasaweb.google.com/fongemie
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-- 
Jeffrey Fongemie

 1304440592.0