H27 Compression Post Support - Update

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Chuck Petty

For those of you that have read my posts on “H27 Mast Step” and “H27 Compression Post”, here is a project update… After determining that the mast step must be rebuilt and the compression post must be replaced, I decided to dig a little deeper. This was prompted by the fiberglass floor being crushed around the base of the compression post. I drilled a few holes in the sole in the head area and found that the core was wet. I cut that out to replace it and took a look at the support structure underneath. For those of you that prefer to live in blissful ignorance… stop reading now… do not look at the attached “picture”… You will not sleep well at night The attached drawing shows the support beam under the compression post. The whole thing is supported by a blob of filler of some kind on the hull. The beam was laminated in the liner. The floor was ½” plywood (soaking wet). Sandwiched between layers of fiberglass. The beam itself was about 2 /12 feet long, 3 ½’ wide, and a maximum of 3” thick, but tapered at each end. In the center, there was a 3” x 4” notch cut out of the aft portion and a 2+” notch cut out of the bottom portion…. That left a section of the beam that was about ½” x ¾” total…. Needless to say it broke in half at that point from its own weight when I picked it up…. I take comfort in the fact that I cannot dig any deeper, at least in this part of the boat. I start putting her back together this weekend. Splash time seems very far away…. I will update as necessary. Chuck Petty S/V Following Sea 1984 H27 PS I did get a survey and it was noted as “slight softness in the floor”. PPS Keep your boat dry. Go after any leak with a vengeance.
 

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David Foster

Our floor

Hmmm... Our compression post base is nothing like your description. The compression post (actually two teak boards) rests directly on the cabin floor, a 1/4 inch liner of fiberglass. This, in turn, rests on the "grid." The grid consists of wood beams running transverse to the hull, and tapering from around 4 inches on hte centerline into the hull curve. Each beam is completely covered and bonded to the hull with a layer of fiberglass for protection an strength. The beam (nearly) under the compression post is not cut out except for a hole with a poly pipe in it to let any water run aft. Either Hunter changed their construction procss, or you have the remnants of an earlier fix. Good luck - it is a bummer, but laying up glass on wood is very doable. The big problem will be working under the liner (if it's still intact!) David Lady Lillie
 
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Carter Leary

1977 - H27

Chuck, Sorry about your troubles ,I to am rebuilding my boat from the keel up but thanks be to the Good Lord , I do not have the compression post problem . I have removed all the trim wood from inside and replacing most of it with pin-rails around the shelves,painting the inside cabin , replacing all portlights and have removed all through hulls with the exception of the raw water intake,naturally,and have rebuilt the diesel.I know what you are up against,good luck with your project and maybe we can both get our boats back in the water in time for hurricane season. Carter Leary S/V IRISH FOX
 
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