[Rhodes22-list] Andrew C.'s Question about compression post...

[Andrew Collins]

Ed

I explained poorly - the compression post is fine and does not move. The
flex is forward of the post: the mast tabernacle sits on an elongated raised
portion of the cabin trunk. This thicker section transfers the load from the
mast aft to the compression post. This whole area inclines forward a bit
under load. Anyway, I am going to  watch this another season - if this is a
stable repeatable cycle as it seems to be, nothing needs to be done.
>From what I have gathered there are slight differences in the location of
the post from year to year as the design of the boat evolved.

I would really enjoy working at the plant, but that must remain a daydream
until my kids are into and out of college, among so many other commitments.

The roads are now fine but were very slippery yesterday, and it is 14F
outside.

Happy New Year

A



On Thu, Jan 1, 2009 at 9:03 AM, Tootle <ekroposki at charter.net> wrote:

>
> Andrew:
>
> I have arrived back in South Carolina to find a spat on the old list.  Even
> Ben C. before he left suggested part of my reply, that is check the
> archives.
>
> There is a history of the compression post and issues.   For example, David
> Culp of Texas bought a used R22 that had compression issues.
>
> Stan has repsonded on this subject in the past.
>
> As an engineer, the term compression post should help you understand that
> some compression is normal and that is why the post is there.  It is my
> opinion that .25 inches is nominal flex for FRP cabin tops.  You would have
> to do a study of whether that is standard or an issue for the R22.
>
> Having moved compression posts on other sailboats, my experience is that
> they are tighter, meaning that even with mast removed, cannot easily be
> moved without raising the cabin top at least an 1/8th of an inch or more.
> So, consider that your compression post is too short?  You would only need
> a
> shim to correct and not a highly engineered stainless steel piece.
>
> The tabernacle is attached using wood screws for reasons explained by
> Commodore Spitzer in the past.
>
> Maybe you need a short vacation to get away from other worldly issues an
> spend a few days as a 'worker bee' in Stan's shop.  Then such little issues
> would be put in perspective.
>
> So, tell us how are the roads?
>
> Ed K
> Addendum:  "My final word is that in the battles that confront us today for
> America's freedom and welfare, our chief aim as public-spirited citizens
> must be neither to avoid trouble, nor to stay out of jail, nor even to
> preserve our lives, but to keep on fighting for our fundamental principles
> and ideals."  Corliss Lamont
> --
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> Sent from the Rhodes 22 mailing list archive at Nabble.com.
>
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