[frers-list]Fairing keel and rudder
Courtney Thomas
frers-list@lists.frers33.com
Tue, 10 Dec 2013 15:54:56 -0500
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On 12/10/2013 2:26 PM, ozgur wrote:
> couple of pictures of relentless, resending.
>
> Oz.
>
>
> On Tue, Dec 10, 2013 at 11:53 AM, Bill Thompson <foredeck@videotron.ca
> <mailto:foredeck@videotron.ca>> wrote:
>
> Courtney,
>
> I went through a lot of these issues when I shortenened my
> standard keel by 7" from the original 6'3" draft. If you had a
> wing keel, you would see the the wing. You have a torpedo or bulb
> as it's called on yours.
>
> Mars Keels, Burlington, ON made the two halves of the bulb we put
> on mine. You can find details of my project on another thread on
> this site. They make the keels for j-Boats, Beneteau, and others,
> and have been doing so for decades. They have also done bulbs for
> hundreds of boats, and know what they are doing.
>
> They may be willing to make some calculations for you so you can
> assess effect of the change to your keel on ballast. You need to
> send them pictures with measurements:
> -keel dimensions: length, width, depth and material (it's 4%
> lead/antimony with a fibreglass cover).
> - dimensions of the bulb, and what material it is made of
> - a picture of a standard keel, and Art's measurements
>
> Tell them you want to know how much weight was taken off when the
> draft was reduced, how much they calculate should have been put on
> to compensate for the weight, and reduction in draft, and how much
> your bulb weighs.
>
> This will allow you to see your ballast ratio and assess your
> situation.
>
> Good luck.
>
> Bill
>
> William Thompson
> Sent from my iPad
>
> > On Dec 10, 2013, at 9:25 AM, Courtney Thomas
> <courtneycthomas@bellsouth.net
> <mailto:courtneycthomas@bellsouth.net>> wrote:
> >
> > Art,
> >
> > Thanks for the data.
> >
> > My understanding is that on the Frers33 a wing keel was an
> option whose draft apparently was 4' 11". Is that from the keel
> root, waterline, or what ?
> >
> > The keel depth on my boat, measured from the root front to the
> foot bottom, ... is about 40".
> >
> > I don't know if a former owner modified said keel, or if I have
> a "wing", though the foot shape is torpedo like and does not have
> a horizontal wing.
> >
> > More importantly, I'm concerned that someone, not a marine
> architect, has sufficiently altered this keel so that it's ballast
> is insufficient, the boat's handling is impaired if not dangerous,
> or that it's performance is significantly reduced.
> >
> > Please bear in mind my intended use is coastal cruising, not racing.
> >
> > 1-What's your opinion on my boat's circumstance ?
> >
> > 2-If of serious consequence, what's your recommendation
> regarding proper assessment and remedy ?
> >
> > Hopefully I'm unnecessarily concerned :-) but with a 50'
> mast and sail capacity on such a small and light boat and it's
> intended 'below the belt' ballast I'm concerned.
> >
> > Most appreciatively,
> >
> > Courtney
> >
> > PS - Anyone else that will weigh in is welcome, of course.
> >
> >
> >
> >
> _______________________________________________
> frers-list mailing list
> frers-list@lists.frers33.com <mailto:frers-list@lists.frers33.com>
> http://lists.frers33.com/mailman/listinfo/frers-list
>
>
Oz,
Is this the stock/standard/factory 6' 3" keel (without a bulb, etc.) ?
Thanks,
Courtney
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<div class="moz-cite-prefix">On 12/10/2013 2:26 PM, ozgur wrote:<br>
</div>
<blockquote
cite="mid:CAGSVXMW7RfD-GtHLgaQfPFTy0GJgfQVFsh5CGggPuz8q53z90w@mail.gmail.com"
type="cite">
<div dir="ltr">couple of pictures of relentless, resending.
<div><br>
<div>Oz.</div>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Tue, Dec 10, 2013 at 11:53 AM, Bill
Thompson <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:foredeck@videotron.ca" target="_blank">foredeck@videotron.ca</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Courtney,<br>
<br>
I went through a lot of these issues when I shortenened my
standard keel by 7" from the original 6'3" draft. If you had
a wing keel, you would see the the wing. You have a torpedo
or bulb as it's called on yours.<br>
<br>
Mars Keels, Burlington, ON made the two halves of the bulb
we put on mine. You can find details of my project on
another thread on this site. They make the keels for
j-Boats, Beneteau, and others, and have been doing so for
decades. They have also done bulbs for hundreds of boats,
and know what they are doing.<br>
<br>
They may be willing to make some calculations for you so you
can assess effect of the change to your keel on ballast. You
need to send them pictures with measurements:<br>
-keel dimensions: length, width, depth and material (it's 4%
lead/antimony with a fibreglass cover).<br>
- dimensions of the bulb, and what material it is made of<br>
- a picture of a standard keel, and Art's measurements<br>
<br>
Tell them you want to know how much weight was taken off
when the draft was reduced, how much they calculate should
have been put on to compensate for the weight, and reduction
in draft, and how much your bulb weighs.<br>
<br>
This will allow you to see your ballast ratio and assess
your situation.<br>
<br>
Good luck.<br>
<br>
Bill<br>
<br>
William Thompson<br>
Sent from my iPad<br>
<div class="im HOEnZb"><br>
> On Dec 10, 2013, at 9:25 AM, Courtney Thomas <<a
moz-do-not-send="true"
href="mailto:courtneycthomas@bellsouth.net">courtneycthomas@bellsouth.net</a>>
wrote:<br>
><br>
</div>
<div class="im HOEnZb">> Art,<br>
><br>
> Thanks for the data.<br>
><br>
> My understanding is that on the Frers33 a wing keel
was an option whose draft apparently was 4' 11". Is that
from the keel root, waterline, or what ?<br>
><br>
> The keel depth on my boat, measured from the root
front to the foot bottom, ... is about 40".<br>
><br>
> I don't know if a former owner modified said keel,
or if I have a "wing", though the foot shape is torpedo
like and does not have a horizontal wing.<br>
><br>
> More importantly, I'm concerned that someone, not a
marine architect, has sufficiently altered this keel so
that it's ballast is insufficient, the boat's handling is
impaired if not dangerous, or that it's performance is
significantly reduced.<br>
><br>
> Please bear in mind my intended use is coastal
cruising, not racing.<br>
><br>
> 1-What's your opinion on my boat's circumstance ?<br>
><br>
> 2-If of serious consequence, what's your
recommendation regarding proper assessment and remedy ?<br>
><br>
> Hopefully I'm unnecessarily concerned :-) but
with a 50' mast and sail capacity on such a small and
light boat and it's intended 'below the belt' ballast I'm
concerned.<br>
><br>
> Most appreciatively,<br>
><br>
> Courtney<br>
><br>
> PS - Anyone else that will weigh in is welcome, of
course.<br>
><br>
><br>
><br>
><br>
</div>
<div class="HOEnZb">
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href="mailto:frers-list@lists.frers33.com">frers-list@lists.frers33.com</a><br>
<a moz-do-not-send="true"
href="http://lists.frers33.com/mailman/listinfo/frers-list"
target="_blank">http://lists.frers33.com/mailman/listinfo/frers-list</a><br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
Oz,<br>
<br>
Is this the stock/standard/factory 6' 3" keel (without a bulb,
etc.) ?<br>
<br>
Thanks,<br>
<br>
Courtney<br>
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