[C38] Bedding Shrouds and leaks

[Rick Swensson]

Thanks, guys.

I'll take all under advisement and let the list know how it goes.

Rick Swensson
----- Original Message -----
From: "Charles" <charles at finn.ws>
To: <hlhowell at pacbell.net>; "Catalina 38 Listserve"
<listserve at catalina38.org>
Sent: Thursday, May 08, 2008 10:52 AM
Subject: Re: [C38] Bedding Shrouds and leaks


> I have carefully rebedded my chainplates several times thinking that was
> where the leak(s) were coming from.  What I found was the leaks (most)
> actually originated around the mast.  With the mast out, I used a
> clothes hanger wire, pressurized air and a lot of patience to pull out
> the rotted plywood.  I also drilled a couple holes in the deck at the
> lower end of the voids and used pressurized air and alcohol to dry them
> out.  I then made a clay dam in the mast hole and pumped West Epoxy in
> through the lower holes.  I used the empty caulking tubes available from
> West to pump the mixture in.  I was able to do the port side first and
> then the starboard side separately.  Once things had cooled down, I took
> the clay dam out and filled in the few voids left.  I used about a
> gallon of epoxy on this, so there was quite a bit of heat generated and
> you need to be careful.  This got rid of the majority of my leaking and
> "sounding" with a mallet around the mast now suggests the voids are
> filled.
> I then used the epoxy (don't remember the name) to fill in around the
> mast, which really stops the leaking that gets through the mast boot.
>
> Regarding using epoxy on the chainplates.  I am with Les on this.  There
> is a lot of flex under loads and I would be worried the epoxy will not
> give, which suggests the give will have to be in the deck surrounding
> the area...  I also have spent way too much time getting rid of silicone
> spots on the boat, which defy any attempts to paint.  I know about
> sikaflex, but now only use life caulk.
>
> Charles Finn
> Mighty Quinn  #114
> Leaving for my westward trip through the Great Lakes on May 15
>
>
> Les wrote:
> > On Wed, 2008-05-07 at 11:54 -0700, Rick Swensson wrote:
> >
> >> A while back someone mentioned re-bedding the chain plates.  Was there
> >> a consensus on what to use?  I seem to recall it was marine epoxy but
> >> don't remember which one.  Any thoughts?
> >>
> >> Rascal has stains on the bulkheads from water leaks but no structural
> >> problems.  Also some of the bolts through the cabin top leak as well.
> >> Fortunately in SoCal we don't get much rain but the moisture from fog
> >> drips through as well.
> >>
> >> Rick  Swensson
> >>
> >
> > If you are discussing the mounting of the chainplates, then you need to
> > look at the loads, and you will see that they require substantial
> > backing.  On our boats the mids and uppers tie to a bar which is
> > fastened via stainless rods (in the hanging locker on starboar) to
> > spread the load.  On the port they tie inot the head bulkhead.  And
> > epoxying the areas to prevent rot and to help ensure the strain is
> > handled is OK.
> >
> > At the deck pass through, though, the chain plate ends are unsupported,
> > and shrouds alternately receive the heavy load on the windward side and
> > release on the leeward so they tend to flex.  Using expoy is doomed to
> > fail, because of this flexing.  Use silicon caulk, such as Sikaflex or
> > Life caulk around the deck plates to prevent leakage and allow flex
> > without cracking.
> >
> > Regards,
> > Les H
> >
> >
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>
>
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