[Public-List] What is the ballast bedded in?
Don Campbell
dk.campbell at xplornet.ca
Sun Apr 26 11:48:13 PDT 2020
The rate at which it will expand is determined by the surface area that
rusts. One big mass will expand less than a bucket of washers.
Don
------ Original Message ------
From: "Phil H via Public-List" <public-list at lists.alberg30.org>
To: "Alberg 30 Public List -- open to all"
<public-list at lists.alberg30.org>
Cc: "Phil H" <cphopewell at gmail.com>
Sent: 2020-04-26 1:29:13 PM
Subject: Re: [Public-List] What is the ballast bedded in?
>Hi, I dealt with water in that area by installing a garboard plug at the
>lowest point at the front of the keel. I also noticed the “sandy” substance
>inside.
>Just curious, though, is the cast iron rusty. If it is, even if you
>encapsulate it in epoxy, wouldn’t it continue to rust, even at a slower
>pace and eventually split the keel open? That’s my big fear.
>
>On Sun, Apr 26, 2020 at 1:16 PM Adam Cue via Public-List <
>public-list at lists.alberg30.org> wrote:
>
>> Hi Gordon,
>>
>> Many thanks for the reply.
>>
>> A bit of background might help. The boat has been on the hard for about 12
>> years per the previous owner. The bilge was full of water from rainwater
>> entering over the years (cockpit and deck drain lines were compromised).
>>
>> The fiberglass "cap" over the ballast was delaminated near the head, the
>> v-berth, and where the holding tank was. Rainwater reached that level and
>> then entered the keel unchecked.
>>
>> Yesterday I removed the majority of the filler which surrounds the ballast.
>> There is standing water at the bottom of the keel. So, the keel seems to be
>> water tight or close to it.
>>
>> At this point, I'm going to drill some small holes at the bottom of the
>> keel and let it drain out.
>>
>> Then I'll need to replace the filler material around the iron ballast. Any
>> suggestions on what to use?
>>
>>
>> Thanks!
>>
>>
>> On Sun, Apr 26, 2020, 03:51 , <public-list-request at lists.alberg30.org>
>> wrote:
>>
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>> >
>> > Today's Topics:
>> >
>> > 1. Re: Reefing Cringle's (John Irving)
>> > 2. What is the ballast bedded in? (Adam Quenneville)
>> > 3. Re: What is the ballast bedded in? (Gordon Laco)
>> > 4. A-4 Two blade propeller survey (charles pleisse)
>> > 5. Re: A-4 Two blade propeller survey (Greg Hounsell)
>> >
>> >
>> > ----------------------------------------------------------------------
>> >
>> > Message: 1
>> > Date: Fri, 24 Apr 2020 16:12:09 -0400
>> > From: John Irving <jirvingvt at gmail.com>
>> > To: Alberg 30 Public List -- open to all
>> > <public-list at lists.alberg30.org>
>> > Subject: Re: [Public-List] Reefing Cringle's
>> > Message-ID: <A79DDE9E-E12C-4C72-873B-332F0E78500E at gmail.com>
>> > Content-Type: text/plain; charset=utf-8
>> >
>> > The sail area further from the mast causes greater tension on the sheet
>> > than the sail area closer to the mast. The center of effort from the
>> sail
>> > area in the first reef would be further from the mast than the 2nd reef.
>> > If the sail area of the first reef were the same as the second reef, the
>> > reduction in sheet tension would be more in the first reef than the
>> second
>> > reef.
>> >
>> > > On Apr 24, 2020, at 2:31 PM, Jonathan Bresler via Public-List <
>> > public-list at lists.alberg30.org> wrote:
>> > >
>> > > ?If you are asking how far up the luff the reefing cringles are
>> located,
>> > > for Constance the first reef cringle is 4' above the tack and the
>> second
>> > > reef cringle is 8' above the tack. This results in sail area
>> reductions
>> > of
>> > > 25% and 45% respectively.
>> > >
>> > > Jonathan
>> > >
>> > > Aside:
>> > > Does the formula for pull on sheets (sq ft * kts * kts / 232) equate to
>> > the
>> > > force on the sail such that a 25% reduction in sail area produces both
>> a
>> > > 25% reduction in sheet load AND a 25% reduction in force on the sail.
>> > > Would think so, but dont know that I have ever seen it said so.
>> > >
>> > > Jonathan
>> > >
>> > >> On Fri, Apr 24, 2020 at 10:52 AM Gordon Laco via Public-List <
>> > >> public-list at lists.alberg30.org> wrote:
>> > >>
>> > >> Hello Greg,
>> > >>
>> > >> That?s probably different in every boat. If your boom already has
>> > >> reefing gear mounted on it, those will be your guiding measurements.
>> > >>
>> > >> Ideally you want the clew reef line to pull outboard along the boom
>> > >> somewhat, rather in the style of an outhaul so that you end up with a
>> > >> reefed sail that is flat, and there is utterly no load whatsoever on
>> the
>> > >> reef points, if you use them.
>> > >>
>> > >> I?ve set up SURPRISE?s reefing so that the clew reefing line starts at
>> > the
>> > >> end of the boom, goes up to the reef clew, then down to a cheek block
>> on
>> > >> the boom at a slight angle aft. That way when the reef is pulled
>> down,
>> > the
>> > >> new foot of the sail is very hard tight and the sail is flat. The
>> > working
>> > >> end of the reefing line then runs up along the boom to a cleat near
>> the
>> > >> gooseneck, so it?s easy to reef whatever the position of the boom.
>> > >>
>> > >>
>> > >> Gordon Laco
>> > >> http://www.gordonlaco.com
>> > >> #426 Surprise
>> > >>
>> > >>
>> > >>
>> > >>> On Apr 24, 2020, at 10:46 AM, Greg Hounsell via Public-List <
>> > >> public-list at lists.alberg30.org> wrote:
>> > >>>
>> > >>> Morning Hive-mind!
>> > >>>
>> > >>> Would anyone have approximate measurements for the distance of your
>> > main
>> > >>> reefing cringles from the foot of the sail? My main is where I cannot
>> > >>> access right now.
>> > >>>
>> > >>> Cheers
>> > >>> Greg H
>> > >>> #592
>> > >>> _______________________________________________
>> > >>> These businesses support your Association:
>> > >>> http://www.alberg30.org/store/A30supporters.html
>> > >>> Please support them.
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>> > >>
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>> > >> These businesses support your Association:
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>> > >>
>> > >
>> > >
>> > > --
>> > > Jonathan M Bresler
>> > > S/V Constance Alberg 30 #262
>> > > Annapolis/Eastport MD
>> > > _______________________________________________
>> > > These businesses support your Association:
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>> >
>> >
>> > ------------------------------
>> >
>> > Message: 2
>> > Date: Fri, 24 Apr 2020 18:49:07 -0400
>> > From: Adam Quenneville <adamquenneville at gmail.com>
>> > To: public-list at lists.alberg30.org
>> > Subject: [Public-List] What is the ballast bedded in?
>> > Message-ID: <a2d0666b-60bb-2b47-8447-016b31c67289 at gmail.com>
>> > Content-Type: text/plain; charset=utf-8; format=flowed
>> >
>> > Hi all,
>> >
>> > Hull #581 here. 1975.
>> >
>> > The fiberglass covering the ballast was compromised and leaking. It had
>> > been repaired previously but unfortunately the bond did not hold. I've
>> > removed the fiberglass and exposed the ballast/keel cavity.
>> >
>> > The iron ballast is set in some type of sandy compound, which is wet
>> > with water and some oil. It almost seems like a clay and sand mix, but
>> > from what I've heard about other boats, some times vermiculite was used.
>> > I have come across a lot of vermiculite in my life, and none of it
>> > looked like what surrounds my ballast.
>> >
>> > Does anyone know with certainty what was used to bed/set the ballast in
>> > the keel cavity in Alberg 30s?
>> >
>> > I ask because the bedding compound (if we can call it that) is about 1"
>> > below the top of the ballast. I would like to fill it flush before
>> > fibreglassing over it.
>> >
>> > If a direct replacement isn't available, can anyone suggest an
>> > alternative material? Either foam of topping/sand mix crossed my mind.
>> >
>> > Many thanks,
>> >
>> > Adam
>> >
>> >
>> >
>> > ------------------------------
>> >
>> > Message: 3
>> > Date: Fri, 24 Apr 2020 20:29:55 -0400
>> > From: Gordon Laco <mainstay at csolve.net>
>> > To: Alberg 30 Public List -- open to all
>> > <public-list at lists.alberg30.org>
>> > Subject: Re: [Public-List] What is the ballast bedded in?
>> > Message-ID: <5D9315D8-D9A0-47D5-A0C8-224B6B0E0D7A at csolve.net>
>> > Content-Type: text/plain; charset=utf-8
>> >
>> > Hello Adam -
>> >
>> > The glass above the iron casting isn?t intended to be watertight? its
>> > purpose is to keep the encapsulated casting down in position should the
>> > yacht assume an extreme angle of heel. If you?ve got water coming up,
>> > that?s an indication that there?s damage to the exterior of the keel.
>> This
>> > is a common issue caused by striking rocks etc over the years of service.
>> > Alberg 30?s can develop a crack down the centre of the ?knuckle? of the
>> > keel, the part down low where the keel would strike something.
>> >
>> > The cure is to grind away damaged lamination and repair with thickened
>> > epoxy and cloth held in place with waxed paper, cardboard and tape till
>> it
>> > cures. Messy, but not very difficult to do.
>> >
>> > Traditionally tar was poured down into keel voids? we supply Jeffrey?s #2
>> > for this purpose, also for laid deck seams in large vessels. It comes in
>> > blocks which one chips off pieces as needed, melts then pours into the
>> > voids with an iron ladle. It has rubber in the ingredients, so remains
>> > flexible. It adheres, but not so much you can?t get it out if you have
>> > to.
>> >
>> >
>> > Gordon Laco
>> > #426 Surprise
>> > http://www.gordonlaco.com
>> >
>> >
>> >
>> >
>> > > On Apr 24, 2020, at 6:49 PM, Adam Quenneville via Public-List <
>> > public-list at lists.alberg30.org> wrote:
>> > >
>> > > Hi all,
>> > >
>> > > Hull #581 here. 1975.
>> > >
>> > > The fiberglass covering the ballast was compromised and leaking. It had
>> > been repaired previously but unfortunately the bond did not hold. I've
>> > removed the fiberglass and exposed the ballast/keel cavity.
>> > >
>> > > The iron ballast is set in some type of sandy compound, which is wet
>> > with water and some oil. It almost seems like a clay and sand mix, but
>> from
>> > what I've heard about other boats, some times vermiculite was used. I
>> have
>> > come across a lot of vermiculite in my life, and none of it looked like
>> > what surrounds my ballast.
>> > >
>> > > Does anyone know with certainty what was used to bed/set the ballast in
>> > the keel cavity in Alberg 30s?
>> > >
>> > > I ask because the bedding compound (if we can call it that) is about 1"
>> > below the top of the ballast. I would like to fill it flush before
>> > fibreglassing over it.
>> > >
>> > > If a direct replacement isn't available, can anyone suggest an
>> > alternative material? Either foam of topping/sand mix crossed my mind.
>> > >
>> > > Many thanks,
>> > >
>> > > Adam
>> > >
>> > > _______________________________________________
>> > > These businesses support your Association:
>> > > http://www.alberg30.org/store/A30supporters.html
>> > > Please support them.
>> > > _______________________________________________
>> > > Public-List mailing list
>> > > Public-List at lists.alberg30.org
>> > > http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>> >
>> >
>> >
>> > ------------------------------
>> >
>> > Message: 4
>> > Date: Sat, 25 Apr 2020 13:10:08 -0400
>> > From: charles pleisse <velocharles1 at gmail.com>
>> > To: public-list at lists.alberg30.org
>> > Subject: [Public-List] A-4 Two blade propeller survey
>> > Message-ID:
>> > <CAGwh+2QajEERnFG=
>> > QyFV+R6p+Zu4z0s_jLJiR9mTfF-uRRADSg at mail.gmail.com>
>> > Content-Type: text/plain; charset="UTF-8"
>> >
>> > If your Alberg 30 has an Atomic 4 with a two blade prop,
>> > What diameter is you propeller?
>> > What is the pitch is your prop?
>> > At what RPM do you achieve hull speed?
>> > How content are you with,
>> > forward thrust
>> > reverse thrust
>> > amount of prop walk
>> >
>> > Charles Pleisse
>> > Sookie #221
>> >
>> >
>> > ------------------------------
>> >
>> > Message: 5
>> > Date: Sat, 25 Apr 2020 14:08:18 -0400
>> > From: Greg Hounsell <greg.hounsell at gmail.com>
>> > To: Alberg 30 Public List -- open to all
>> > <public-list at lists.alberg30.org>
>> > Subject: Re: [Public-List] A-4 Two blade propeller survey
>> > Message-ID:
>> > <CAF=smri5oYw5fB0DO-9nefZQfznmn==M9d11pSbA=
>> > USBP0AmTQ at mail.gmail.com>
>> > Content-Type: text/plain; charset="UTF-8"
>> >
>> > Afternoon
>> >
>> > I have a 13" x 7" prop. It came with the boat and not happy with it at
>> all.
>> > The Atomic on reaches around 1400rpms and that's it. It also only leaves
>> > about a 3/4" Gap at the top.
>> > In Marinas constantly in and out of gear at idle otherwise speed too fast
>> > and major propwalk in reverse.
>> >
>> > It does plow through headwinds and 1-2m waves easily.
>> >
>> > Purchased the Indigo 3 blade this winter. Maybe we'll get to try it this
>> > season??
>> >
>> > Cheers
>> > Greg #592
>> >
>> >
>> > On Sat, Apr 25, 2020, 1:10 PM charles pleisse via Public-List <
>> > public-list at lists.alberg30.org> wrote:
>> >
>> > > If your Alberg 30 has an Atomic 4 with a two blade prop,
>> > > What diameter is you propeller?
>> > > What is the pitch is your prop?
>> > > At what RPM do you achieve hull speed?
>> > > How content are you with,
>> > > forward thrust
>> > > reverse thrust
>> > > amount of prop walk
>> > >
>> > > Charles Pleisse
>> > > Sookie #221
>> > > _______________________________________________
>> > > These businesses support your Association:
>> > > http://www.alberg30.org/store/A30supporters.html
>> > > Please support them.
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>> > > Public-List at lists.alberg30.org
>> > > http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>> > >
>> >
>> >
>> > ------------------------------
>> >
>> > Subject: Digest Footer
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