[Public-List] Water intakes (was: Cockpit and scupper drains)

Tue Sep 22 08:32:55 PDT 2015

I think as a habit I would never "T" my engine raw water intake...just
sayin'  Although I have heard of people putting a "Y" valve in the line
where one position is an emergency bilge pump...still the risk just seems
iffy...

Wes

On Tue, Sep 22, 2015 at 8:31 AM, Jonathan Bresler via Public-List <
public-list at lists.alberg30.org> wrote:

> "Had not considered that might happen when the lines to the galley and the
> head are full of water from use."
>
> Loops rising higher than the rise from the thru-hull to the raw water pump
> might address the issue.  But God help us if those loops lost the water in
> them, then it would be much easier to pull air from the head or the galley.
>
>
> Thank you.   Good to have folks here with much more experience to save us
> newbies from possibly horrible mistakes.
>
> Jonathan
>
> On Tue, Sep 22, 2015 at 8:27 AM, Jonathan Bresler <262alberg30 at gmail.com>
> wrote:
>
> > George,
> >
> > Thank you.  Drawing air in place of water would be bad.  Had not
> > considered that might happen when the lines to the galley and the head
> are
> > full of water from use.  Air would be bad indeed.  Not much cooling would
> > be going on there.
> >
> > I misspoke regarding the cockpit thruhulls.  Those I do leave open.  They
> > are the only ones that I leave open.  Another reason to close and open
> the
> > engine raw water intake each time, is that it nearly forces me to look
> into
> > the bilge, give the engine an enquiring glance, and then I feel, I might
> as
> > well, check the oil and cooling water levels each time.  In short, it
> > creates a situation in which I have to choose not to do these checks in
> > place of having to choose to open the engine box and then do the checks.
> >  Perhaps I overstate the matter....might be the effect of reading too
> much
> > about behavioral economics.
> >
> > Jonathan
> >
> > On Mon, Sep 21, 2015 at 9:03 PM, George Dinwiddie <
> gdinwiddie at alberg30.org
> > > wrote:
> >
> >> Jonathan,
> >>
> >> On 9/21/15 5:12 PM, Jonathan Bresler via Public-List wrote:
> >>
> >>> Stephen,
> >>>
> >>> As you mentioned, the 1/2" thru-hulls are quite a piece of work.
> >>>
> >>> "Whitby did a lot of things over the years to keep the cost of the
> Alberg
> >>> 30 affordable. Perhaps the *worst thing was to make their own half-inch
> >>> through-hulls*. They took half of a pipe nipple and peened it over a
> >>> fender
> >>> washer. While this seems like a mechanically sound construction at
> >>> first, a
> >>> little corrosion can make this fall apart into the two pieces.
> >>> Fortunately
> >>> my boat was on land when it did so. I put a wrench on the engine intake
> >>> valve and the pipe nipple pulled through the hull with no apparent
> >>> effort.
> >>> I had been *that close* to sinking all season."
> >>>
> >>> Was looking at #262 recently, thinking about thru-hulls, and noticing
> the
> >>> 1/2" fresh water line that runs from the tank under the v-berth to the
> >>> head
> >>> and the sink, and got to wondering.  Why do we have have three 1/2"
> >>> thru-hulls?   We have one for the engine and not two feet away, one for
> >>> the
> >>> galley, and another that is closer to the engine raw water thru-hull
> than
> >>> the fresh water tank is to the galley.
> >>>
> >>> Seems that we could eliminate two...in particular the one in the galley
> >>> and
> >>> the head by extending a line from the engine raw water thru-hull to the
> >>> galley and the head.  That line could be flexible fiber/cord reinforced
> >>> plastic.  The long run of hose would be from the engine thru-hull to
> the
> >>> head.  That run could be inside a piece of schedule 40 PVC to protect
> the
> >>> hose from whatever might be under the port settee.
> >>>
> >>
> >> I would not want to tee into the engine intake. It's too likely that the
> >> engine would start drawing air from one of the other hoses instead of
> >> pulling in seawater.
> >>
> >>
> >>> To date, since May 17th this year ;), I have closed all thru-hulls
> every
> >>> time I leave the boat.  I open each as needed.  When not needed all
> >>> thru-hulls are closed.  Would have to open the single thru-hull at the
> >>> engine anytime I wanted to use the head or the sea water galley pump.
> >>> Perhaps that is not too high a price to pay for eliminating two holes
> in
> >>> the boat.
> >>>
> >>
> >> Perhaps I'm lazier than you, but I would not want to pull up the
> >> floorboard over the batteries and bend way down there every time I
> wanted
> >> to pump the head. Then again, I wouldn't want to open the engine intake
> as
> >> part of every time I start the engine when I'm cruising.
> >>
> >> I do leave the cockpit/scupper throughhulls open all the time. I've had
> >> enough problems with rainwater when these clog with leaves. I wouldn't
> want
> >> them to be generally closed.
> >>
> >>  - George
> >>
> >>
> >>> Considering this as one of this winter's projects.
> >>>
> >>> Thoughts ?
> >>>
> >>> Jonathan.....owner newbie!
> >>>
> >>>
> >> --
> >>  ----------------------------------------------------------------------
> >>   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
> >>  ----------------------------------------------------------------------
> >>
> >>
> >>
> >>
> >
> >
> > --
> > Jonathan M Bresler
> > Alberg 30 #262
> > Annapolis/Eastport MD
> >
>
>
>
> --
> Jonathan M Bresler
> Alberg 30 #262
> Annapolis/Eastport MD
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