[Rhodes22-list] Re design of Rhodes Interior and elimination of compression post.

[Blue Heron]

John,

Unlike your stringer, the one in my '93 model in about the same place is not
supported directly by the keel.  So in your case, the bulkheads supporting
the arch should transfer compression from the mast to the keel through the
stringer.

However, I do have a concern that if the mast compression causes your arch
to straighten out, the arch would force the bulkheads outward, causing the
hull and cabin roof to deform.  That's the same risk I face by having
stepped a compression post on my unsupported stringer.

Rick

On Sun, Apr 12, 2009 at 9:59 PM, John Shulick <jsbudda at verizon.net> wrote:

>
> Hi Rick,
>
>  It is my understanding that putting a load in the center of the arch would
> try to flatten the arch out which would transfer the load to the corners of
> the bulkheads. those bulkheads were cut using the original wall which I
> removed in one piece and am saving just in case. They fit flush to the
> cabin
> interior. The starboard bulkhead is sitting directly on the original
> stringer (see first pict) the port side is offset by 1/4" because the bench
> seat rests on that side and is held by screws. any additional load is also
> carried to the keel by the 1x2 hard wood boards that look like trim pieces.
> To install the arch I had to first wedge it into one of the corners and
> then
> use a piece of wood ( the original post worked quite well) and pre load the
> cabin ceiling. Once you have the other end held up you CAREFULLY use a
> SMALL
> hammer to slide the arch into place. The arch is held in place by that
> tension and although there are no screws I can't budge it and I am a strong
> person. I feel pretty confident that when the mast is up and the rigging
> tightened the whole thing should tighten up even more. Note: IF the
> bulkheads were extended all the way into the corners where the hull and
> deck
> meet AND then glassed in you could then shorten the the spreaders on the
> mast and the stays could be moved to the cabin top attaching through the
> roof and directly to the bulkheads. That would allow a genoa track to be
> installed in the corner where the deck and cabin wall meet allowing higher
> pointing ability. The bulkheads would transfer the heeling forces and the
> cabin roof would not carry the load. But I'm not ready to try that yet.
>
> Best
> John S
>
> Blue Heron wrote:
> >
> > Hi John,
> >
> > Your pictures show some nice wide open spaces.  However, it is hard to
> > tell
> > where the downward load on the arch goes.  Are the the bulkheads or "half
> > walls" supporting the arch supported by a stringer or perhaps a direct
> > path
> > the the keel?
> >
> > Rick
> >
> > On Sun, Apr 12, 2009 at 12:41 PM, John Shulick <jsbudda at verizon.net>
> > wrote:
> >
> >>
> >> Hi everybody,
> >>
> >>  Over the last season I decided to change the interior of my 71 rhodes
> to
> >> reflect the way my wife and I use the boat. We are not small people and
> >> found the original Layout to be hard to move around in when cabin bound
> >> by
> >> weather. As we get on the boat friday nights and don't return to the
> dock
> >> until sunday afternoons we found the six foot nose birth a bit cramped.
> >> Also
> >> as the early rhodes did not have a fixed head we had a hallway with
> >> little
> >> purpose and a wall extending halfway across the the boat to little
> >> purpose
> >> except to act as a compression post for the mast. During the past few
> >> weekends I added a 2 ft. extension to the bow bed replaced the cabin
> >> floor,
> >> installed new carpeting and removed the original wall replacing it with
> 2
> >> half walls and a compression arch over the cabin ceiling to accept the
> >> mast
> >> load. The arch you see in the following pictures is 1/2 in spring steel
> >> custom bent in a 100 ton press (I do live in Pgh. after all) I stood on
> >> the
> >> arch before I installed it and my 280 lbs. did not even make it flex. I
> >> feel
> >> pretty confidant it will work but will keep all informed in the event of
> >> failure. Enclosed are before and after shots.
> >>
> >> John Shulick
> >> http://www.nabble.com/file/p23012525/johns%2B2007%2Bhome%2Bpics-058.jpg
> >> http://www.nabble.com/file/p23012525/johns%2B2007%2Bhome%2Bpics-054.jpg
> >> http://www.nabble.com/file/p23012525/DSCF0257.jpg
> >> http://www.nabble.com/file/p23012525/DSCF0258.jpg
> >> http://www.nabble.com/file/p23012525/DSCF0259.jpg
> >> http://www.nabble.com/file/p23012525/DSCF0260.jpg
> >> http://www.nabble.com/file/p23012525/DSCF0261.jpg
> >>
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> >>
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