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#1 2022-10-19 13:53:44

chad
Member

compression post

I attached this to an older post about this subject.
There was a lot of views but no replies. I was hoping to communicate with someone that has tackled this repair or knows anything about it.
Please help if you can.

I have a 1975 mark III and my compression post seams to be bulging at the bottom.
I was thinking I would cut off the offending bit, 6” or so, and add in a shoe of white oak or similar water resistant wood. I would fix it to the existing post with epoxy and an aluminum collar.
Dows anyone see a problem with this kind of repair?
What is the post made of?
Can I do this with the mast up?
The rail for the sliding door on the head needs to be removed?
Will I run into something unexpected cutting it off in situ?
Chuck
http://www.cc27association.com/f4/img/m … c-post.jpg

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#2 2022-10-19 15:18:39

capricous
Member

Re: compression post

following
Capricious Mark 3


Capricious Mark 3 Hull #599

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#3 2022-10-26 10:27:57

Superior Blue
Member

Re: compression post

Chad - I see you also posted in another thread about replacing a compression post.  The OP in the thread had a good procedure.

Yes, it would be a good idea to take the mast down to relieve any compression pressure from the mast.  But I don't think it would be necessary to remove the rail for the sliding door. In my 1973 MkII that is a solid wood piece and assuming you take the sliding door off to get it out of the way, it wouldn't be a problem.

Let us know how you do.


Phil Peterson
Superior Blue
1973 C&C 27 Mk II
Bayfield, WI

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#4 2022-10-26 10:34:57

capricous
Member

Re: compression post

In looking under the sole,the compression post does not go into the bilge. It sits on a rail that goes across the bilge.
Has a p.o. done something?
The work looks original
Dana


Capricious Mark 3 Hull #599

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#5 2022-10-28 14:48:48

chad
Member

Re: compression post

I've taken the boat out of the water with the mast up so I won't be doing anything until the spring.
I will have to put the  boat in the water and take it to the mast crane to do my work.

The post sits on a bracket that attaches to the sole and the post. I aim pretty sure it is original, i've owned the boat since 1995. The plastic cover on the post looks like something that would be original.

How sensitive is the jacking procedure, is a hydraulic pump jack OK or should should I use a screw jack that more accurate to the amount of lift.

Chuck Dyck
Talisman
1975 Mark III

mini_c-post-qtAG.jpg

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#6 2022-10-28 15:19:35

capricous
Member

Re: compression post

I'll have to look at my boat.
will get right back to you
Dana


Capricious Mark 3 Hull #599

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#7 2022-10-29 13:10:54

capricous
Member

Re: compression post

There is no metal bracket on mine and I don't believe you're problem is below the sole. My pic shows that there is no part of the support structure,being in water. You will have to cut out the rotted part of the post,and patch in with composite,after jacking up near the top of the post,keeping an eye on the deck.mini_ResizerImage1337X1002.jpg


Capricious Mark 3 Hull #599

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#8 2022-11-03 18:17:49

chad
Member

Re: compression post

Thanks Dana
I think I can get away with jacking up just 1/2 an inch, and then patching. Maybe not as intimidating as I originally thought.
Chuck

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