Joe, the 30-1 is similar, but uses three sets of plywood sandwich (3/4 x 2)
across the gap and then a large (roughly 8 x 20 x 2 inches thick) block
which sits on top of that with an aluminum 'shoe' on top which the butt of
the mast sits in. Unfortunately on the 30, there doesn't have to be any
cracks anywhere to get water into the deep sump which is under this stuff,
as leaking down the mast provides adequate water to keep everything damp.
They were even nice enough to drill a hole in the block and the shoe for the
ground wire from the mast to the keel bolt and which also lets the water
down into the sump.
The plywood is what gets squishy and that is what lets the mast droop. Mine
was about half an inch which was not too harmful to anything else.
Apparently, Joe's is worse.
Joe, keep the water out of the sump, get it dry and then figure out how to
bolster up the cross members (or cut them out - all or part) and then I
would build a dam at the fore and aft ends of this area and fill it with
epoxy. You will have to figure out what to do with the water from the
forepeak and what comes down the mast.
I have installed small bilge pumps in the sump over the years and they have
all failed. That means you have to pull the mast to replace them. I just
discovered the last one I put in two or three years ago is a goner. And,
just after I decided not to pull the mast this year. I do have a
supplementary pump just aft of the mast in the shallower area of the bilge,
so all is not lost.
I would try to make the sump as shallow as possible with epoxy and figure
out how to divert the water which will come down the mast to somewhere you
can install a pump and get access to it.
Gary Nylander
1980 30-1 Penniless
St. Michaels MD
----- Original Message -----
From: "Della Barba, Joe" <joe.della.ba...@ssa.gov>
To: <cnc-list@cnc-list.com>
Sent: Wednesday, December 19, 2012 8:50 AM
Subject: Re: Stus-List 30 Mk1 Mast step repair
The 35 MK I has a truly bad mast step design. It is essentially a
rectangular piece of wood spanning the bilge. The step is a narrow piece
of thin aluminum only as wide as the empty space under the wood. As the
wood slowly rots, the step slow bends and sinks into the bilge.
My replacement design was rectangular marine ply - two layers of 3/4"
IIRC - well epoxied and then two 1/4" aluminum plates that span the FULL
WIDTH welded together with the mast step welded onto that. This has the
wood in compression and not being pushed down into the gap. The center
portion of it could rot right away and not really hurt anything.
Joe Della Barba
Coquina
C&C 35 MK I
-----Original Message-----
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Curtis
Sent: Tuesday, December 18, 2012 10:23 PM
To: cnc-list@cnc-list.com
Subject: Re: Stus-List 30 Mk1 Mast step repair
My C&C 30 MK1 1981 has a alumum plate under the mast and it works great.
On 12/18/12, Joe at Zialater <j...@zialater.com> wrote:
Thanks very much to all who sent in ideas and advice on possibly
jacking up my mast for the step repair. The question was rendered
moot for me when the boatyard pulled the mast this morning. I had
mentioned that I wanted it pulled, although I expected them to notify
me. Well - I think the advice to give myself some work room and also
have the opportunity to go over the mast carefully was the way to go
anyway. The bottom few inches of the mast appear to be in good shape
so no worries there. The coach roof was dragged down an inch or so by
the mast sagging - I hope that I can just jack that back into shape
somehow.
So, I was scooping out 37 year old bilge water from under the old mast
step today - or at least it smelled that way. It appears that the
lowest point in the bilge is under the mast step - I will probably try
to install a bilge pump or some other method of getting the water out.
Once the mast is back
in, the area is pretty much inaccessible. I will check the keel bolt
under
there too.
I will keep you all in the loop as the job progresses towards that
first glorious sail on a sparkling spring day!
Cheers,
Joe
1975 30 Mk 1
Mayo, MD
--
"The pessimist complains about the wind; the optimist expects it to
change; the realist adjusts the sails."
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