[Rhodes22-list] Compression Repair and Addition of Compression Post

[Blue Heron]

The yard painting my boat just replaced the mast step.  They are not happy
with the beautiful compression post I fashioned from an oak full round
supported by the cross-beam that frames the head sole.

They're thinking of replacing the post with a truss to the head bulkhead.
This would carry the load down to the keel and prevent hull deformation when
compression loads the cross-beam.

Rick

On Tue, Feb 24, 2009 at 1:00 AM, David Culp <dculp at hsbtx.com> wrote:

> Andrew:
> That sounds like a good plan.
>
> David
>
> Date: Sun, 22 Feb 2009 14:05:17 -0500
> From: Andrew Collins <sailingvesselcarmen at gmail.com>
> Subject: Re: [Rhodes22-list] Compression Repair and Addition of
>       Compression     Post
> To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org>
> Message-ID:
>       <999352ba0902221105r149c46cdybec7ac8b082084de at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> David
>
> You are correct. Our boat's respective deflections are opposite. The
> problem
> I have is if I move the compression post you can't get to the head very
> well, so I am thinking of installing a stainless steel bracket with a
> buttress that will catch the mast step forward and the compression post
> aft.
> The diagonal member would only be about 8-10" long. I know a custom
> stainless fabricator and can't imagine it would be expensive,
> $100-150<$@2100-150>,
> maybe.
>
> The other possibility is to get the SS comp post from Stan and install it
> at
> the aft end of the V berth. To do this I would want to take it down to the
> hull/stringers and glass it in. Then the deck reamining between the 2
> hatches must act as a bridge. My deck is wood cored, so my SWAG (scientific
> wild ass guesstimate) is that it will be OK.
>
> I guess a call to Stan is in order. I'll keep da list posted
>
> Andrew
> S/V Carmen
>
>
> On Sat, Feb 21, 2009 at 10:38 PM, David Culp <dculp at hsbtx.com> wrote:
>
> > Hi Andrew:
> >
> > I am visualizing your boat as not having any bulkhead in front of the
> > compression post and just the deck supports the mast in that area?  It
> that
> > right?
> >
> > My deflection was opposite yours and probably occurred because someone
> > tighten down too hard on the aft stays and left it.  My deck was
> basically
> > bending backwards, sort of breaking over the edge of the bulkhead because
> > there was no support directly under the mast.  Yours is flexing forward
> and
> > if you have no support underneath it other then the compression post,
> then
> > I
> > can understand that and you probably just need another post.  If there is
> > some other support there already, then I probably would want to
> investigate
> > further and make sure that I had no water intrusion either in the deck
> > itself (the bridge) or in the deck support structure in both the top and
> > bottom of the boat.  My '98 has foam core, but your boat may be wood
> cored.
> >  Neither one of them like water.  I pulled a hatch out and checked just
> to
> > make sure none had gotten in.
> >
> > Check with Stan because I think I read on the list somewhere that he has
> a
> > kit for a stainless pole.  If you already have a stainless pole and can
> > install another one, I think that would be good looking and very
> > substantial.  Maybe you could move the one you already have directly
> under
> > the step and solve the problem?  I don't know as the boats have some
> > differences spanning the years.  In any event,  I am sure Stan has seen
> all
> > kinds of things on used boats coming in for recycle and can probably
> advise
> > you whether or not there is anything for concern.  Personally, I like
> > having
> > the hatches for the ventilation they provide and having a compression
> post
> > or two is actually a plus in my book.
> >
> > Interested to hear what you work out.
> >
> > Regards,
> > David
> >
> >
> > Date: Thu, 19 Feb 2009 21:36:19 -0500
> > From: Andrew Collins <sailingvesselcarmen at gmail.com>
> > Subject: Re: [Rhodes22-list] Compression Repair and Addition of
> >       Compression     Post
> > To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org>
> > Message-ID:
> >       <999352ba0902191836waed3e68wc7f72fdce1d6a6ac at mail.gmail.com>
> > Content-Type: text/plain; charset=ISO-8859-1
> >
> > David
> >
> > Sorry to respond to this post so late, but due to travel and work it all
> > got
> > delayed. The repair work you did looks like it solved the deck deflection
> > problem - very nice job.
> >  My boat is an '86 recycled in '06 with the unenclosed head - it has a
> > curtain. The compression post is aft of the mast step, and I get a
> seasonal
> > deflection where the mast step plate depresses downward toward the bow.
> It
> > is not as severe as the conditiion your photos show, and the deck returns
> > to
> > the correct shape while the mast is stepped during the off season and she
> > is
> > on the trailer on the hard. The only reason I noticed it was because,
> like
> > your boat there are 2 hatches, there was some rainwater coming in from
> > where
> > the hatch gaskets no longer touched the deck, leaving a 1/4" gap.
> > Michael W's comments below seem right on - the 2 hatches  leave a small
> > bridge and a little added support is required.
> >
> > Seeing your results will probably inspire me to install a remedial
> support
> > of some kind as well.
> >
> > Thanks for the post (pun intended)!
> >
> > Andrew Collins
> > s/v Carmen
> > Grass Island CT
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