[Public-List] Bulkheads

Fri Feb 5 06:33:09 PST 2016

Gordon,

Thank you, but credit should go to Wes Gardner.  Wes has mentioned
the Schaefer chainplate covers and in doing so seems to have convinced
me to add them.   Noodling the idea that 7 pieces of G-10 3" by 2"
(covers are 2-1/2" x 1-9/32" per Schaefer webpage  ) expoxied to the deck,
rounded corners, filleted G-10 deck joint, with Schaefers on screwed down
on top might be just the thing that the well-dressed Alberg 30 will be
wearing
this season.

Jonathan

On Fri, Feb 5, 2016 at 9:26 AM, Gordon Laco <mainstay at csolve.net> wrote:

> Thank you for that recommendation Jonathan,  I'm going to fit them to my
> plates this spring.
>
> Gord #426 Surprise
>
>
> On 2016-02-05, 9:23 AM, "Jonathan Bresler via Public-List"
> <public-list at lists.alberg30.org> wrote:
>
> > Thinking about chainplate covers.
> > Schaefer covers have been mentioned a few times in the thread.
> > Schaefer appears to have covers for 1-1/4"x1/8" chainplates (84-88/84-78)
> > and covers for 1-1/2"x1/4" chainplates (84-90/84-80) as well as smaller
> and
> > larger
> > chainplates.  Our chainplates are 1-1/4"x3/16", if I measured and noted
> the
> > sizes correctly.
> >
> > Guessing that folks are using the  covers for 1-1/2"x1/4" chainplates
> > (84-90/84-80) ?
> >
> > Jonathan
> >
> > On Fri, Feb 5, 2016 at 9:20 AM, Jonathan Bresler <262alberg30 at gmail.com>
> > wrote:
> >
> >> Backing up a moment, Don mentioned:
> >>
> >> "The backstay chainplate offers a different problem. There is a moment
> of
> >> force there because of the design. The top bolt is aft of all the the
> >> others because *the chainplate is angled aft at the top*. Thus if the
> top
> >> bolt fails from a bad knee, then the leverage is increased on the lower
> >> bolts and shear is more likely. As the chainplate revolves around the
> >> bottom bolt as the others shear, and it holds because there is no
> longer a
> >> moment to shear it, once straight with the stay, there is a major
> overload
> >> in a straight pull to cause the shear then, and there is no deck that
> can
> >> hold that so the backstay flies free."
> >>
> >> Needless to say, this scared the "stuffing" out of me particularly as it
> >> does not match what I remember seeing in #262.....hurriedly went to the
> >> boat last night to check.   To my relief, the backstay chainplate is
> >> installed through the deck and bolted to the knee at an angle in line
> with
> >> the backstay.
> >>
> >> Did Whitby change the installation of the backstay chainplate at some
> >> point ?
> >>
> >> Jonathan
> >>
> >> P.S.  backstay chainplate is 1-1/4" x 3/16" x 6" (below deck) with 5/16"
> >> bolts, 1/2" pin in the chainplate and 1/4" 1x19 stainless steel wire
> >> backstay.
> >>
> >> On Fri, Feb 5, 2016 at 8:16 AM, Jason S via Public-List <
> >> public-list at lists.alberg30.org> wrote:
> >>
> >>> I also have had good luck with 3M4000 series UV..Very good seal and no
> >>> cracking or seperation from chainplates or deck areas after 2 seasons.
> >>>
> >>> Jason
> >>> #457
> >>> www.svsalacia.blogspot.com
> >>> On Feb 5, 2016 8:05 AM, "via Public-List" <
> public-list at lists.alberg30.org
> >>>>
> >>> wrote:
> >>>
> >>>>
> >>>>
> >>>> For caulking chainplates I have tried numerous products over the 38
> >>> years
> >>>> we have owned the boat...my current favorite is 3M4000 UV.
> >>>>
> >>>>
> >>>> Mike Lehman
> >>>>
> >>>> ~~/)~/)~~
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> On Thu, Feb 4, 2016 at 2:56 PM -0800, "Stephen Gwyn via Public-List" <
> >>>> public-list at lists.alberg30.org> wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> So what are people's favourite sealant? I've been using
> >>>> BoatLife polysulfide sealant. Polyurethane  (3M5200 and Sikaflex)
> >>>> is too permanent. Silicone is permanent enough and once you
> >>>> use it, nothing will stick to where it has been.
> >>>>
> >>>> I was reading a british sailing, which recommended a butyl sealant
> >>>> which stayed sticky indefinitely, meaning that when the seal flexed
> >>>> and split, it would just seal itself again.
> >>>>
> >>>> Thoughts?
> >>>>
> >>>> SG
> >>>>
> >>>> _______________________________________________
> >>>> These businesses support your Association:
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> >>>> Please support them.
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> >>>> _______________________________________________
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> >>>> Please support them.
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> >>>> Public-List at lists.alberg30.org
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> >>>>
> >>> _______________________________________________
> >>> These businesses support your Association:
> >>> http://www.alberg30.org/store/A30supporters.html
> >>> Please support them.
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> >>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>>
> >>
> >>
> >>
> >> --
> >> Jonathan M Bresler
> >> Alberg 30 #262
> >> Annapolis/Eastport MD
> >>
> >
> >
>
>
>

-- 
Jonathan M Bresler
Alberg 30 #262
Annapolis/Eastport MD