Compression Post Off Centerline?

[Keith McC]

I am installing a Dwyer mast hinge (thier terminology...I thought it was a tabernacle). The Dwyer folks gave me conflicting advice as to how to fasten the hinge to the deck. One guy told me to use screws, the other said to through bolt it and use a backing plate. The theory behind screw use is that if the mast goes, it will not destroy the coach roof top.I opted for through bolts because of fears that screws, no matter how well installed, will leak. I made a stainless steel backing plate and fitted it in place. That's when I discovered that the original compression post positioning appears to be two or three inches off the centerline and in any event is not directly under the mast. Is this the original design or was the boat modified somewhere along the line. If it is the original design, is it worth trying to place the post directly under the backing plate? this will narrow the passageway into the head by a couple of inches, but I can live with that.Thanks for the info and advice.

 

[SCA]

Compression Post

When rebuilding the compression post / main bulkhead on my 77 H30 I noticed the same thing. I put it back the way it was. Works fine. I did add a 1/4" aluminum plate under the mast to increase the load bearing surface.

 

[David Foster]

Mine's off center too

And others have reported the same when I asked about mast compression a while back.Looking at the set-up, Cherubini seems not to be too concerned about the compression load on this hull - the bottom of the compression post sits directly on the fiberglass floor, which sits in turn on a the grid along the center of the hull.DavidLady Lillie'77 h27