Glenn Henderson H41 compression post support

dakno

dakno

.
Jun 22, 2009
209
Hunter 41DS new orleans
This is really upsetting. My lightly used 08 H41 has a depression at the compression post. I believe the 41 ac and the 41ds are the same as far as this topic is concerned. At the bulkhead between the stateroom and the forward pullman berth their is a door. Door measures 18" 7/8" W. Door jamb sits to the starboard side of the mast compression post. At the top of the door header/jamb the bulkhead/jamb has dropped approx 3/8" at the striker/center of the boat. There is no divit/depression on the floor. There is no access to the bottom of the C. post that I have found. There is no corresponding compression on the cabin top . I know that I can dissemble the door jamb and mill, trim jamb in order to make the door unit function and look correct. But, I want to know what is going on with this sag. Anyone with a 04 and newer H41 please chime in and tell me if nothing or something is going on with their boat. If I am having a failure I can't be the only one. My best hope is that this is a cosmetic issue only. H41 owners chime in please!
 
dakno

dakno

.
Jun 22, 2009
209
Hunter 41DS new orleans
Glenn Henderson designed, sorry about the name. Hunter 41 ac and hunter 41 DS
 
Nodak7

Nodak7

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Sep 28, 2008
1,256
Hunter 41DS Punta Gorda, FL
Interesting Dakno! Is there any deformation at the mast base or the decking around the Mast base? Have you checked your standing rigging to see if it is loose? If it is not loose then it may just be the woodwork. If it is loose then that is a much more serious issue. 3/8" of an inch would be very noticeable at the chain plate connections.
 
I

ice breaker

.
Sep 11, 2011
428
Hunter 41AC Bayfield WI, Lake Superior
I have a 41AC 2004. No issues ever. Did a rigger over tighten the stays????
 
SEMPERAVANTI41

SEMPERAVANTI41

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Jun 15, 2012
715
BAVARIA C57 Greenport, NY
Have 07 41 DS, not lightly used. No problem with stateroom/pullman door or jamb. Easy to remove trim in pullman berth (4 screws as I remember) that covers compression post. When I looked at mine it appears to be a s/s tube of stout construction. I think with trim removed you can see base of tube, or perhaps it can be seen from bilge in main cabin? I doubt that this is the problem, please keep us posted.
 
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Jackdaw

Jackdaw

.
Nov 8, 2010
11,386
Beneteau First 36.7 & 260 Minneapolis MN & Bayfield WI
Glenn Henderson is indeed a well regarded designer. His Hendo30 is a rocketship. This level of construction detail would have been left to the builder. Seems pole is short for height needed I but would assume all posts are built to same spec. Built height/headroom could vary by 3/8 inch due to construction variances. Let us know!
 
dakno

dakno

.
Jun 22, 2009
209
Hunter 41DS new orleans
From outside the boat at the cabin top there is no noticeable dip. Inside the boat at the base of comp. post no dip. I will remove the door frame to recut the trim and probably remove trim around the post just to check out the construction. Rigging has been properly maintained and is correct at this time. I know all the history of this boat since new so there is no story there. I'm really hoping this is cosmetic in nature. At time of purchase 30 months ago neither I nor surveyor noticed this. The troubling thing is this is not static but has gotten worse to the point where the door to the forward berth won't close. No damage history, no misuse. PO was a engineer and the boat showed as new when I bought it from the same broker who sold the boat new. At the time of purchase engine had 240 hours TT. I will keep y'all posted as to what I figure out.
 
Nodak7

Nodak7

.
Sep 28, 2008
1,256
Hunter 41DS Punta Gorda, FL
dakno said:
From outside the boat at the cabin top there is no noticeable dip. Inside the boat at the base of comp. post no dip. I will remove the door frame to recut the trim and probably remove trim around the post just to check out the construction. Rigging has been properly maintained and is correct at this time. I know all the history of this boat since new so there is no story there. I'm really hoping this is cosmetic in nature. At time of purchase 30 months ago neither I nor surveyor noticed this. The troubling thing is this is not static but has gotten worse to the point where the door to the forward berth won't close. No damage history, no misuse. PO was a engineer and the boat showed as new when I bought it from the same broker who sold the boat new. At the time of purchase engine had 240 hours TT. I will keep y'all posted as to what I figure out.
Click to expand
Yes please Dakno I am very interested (as I am sure many others are as well) in what might be going on here!
 
dakno

dakno

.
Jun 22, 2009
209
Hunter 41DS new orleans
Thanks for the responses, SEMPERAVANTI, I won't be back at the boat for a few weeks. From the inside of the Pullman berth on the veneer wrap around the compression post I should be able to find screws/fasteners to remove this covering and expose the post? Hopefully this is cosmetic in nature because it seems no-one else has had this issue. Nodak and Dakno? Doppelgänger ?
 
Nodak7

Nodak7

.
Sep 28, 2008
1,256
Hunter 41DS Punta Gorda, FL
dakno said:
Thanks for the responses, SEMPERAVANTI, I won't be back at the boat for a few weeks. From the inside of the Pullman berth on the veneer wrap around the compression post I should be able to find screws/fasteners to remove this covering and expose the post? Hopefully this is cosmetic in nature because it seems no-one else has had this issue. Nodak and Dakno? Doppelgänger ?
Click to expand
Never had an issue like this one Dakno. I did take another look inside and saw no indication of any problem in this area.
 
dakno

dakno

.
Jun 22, 2009
209
Hunter 41DS new orleans
Good news. I'm at the boat now. I pulled the cover off the compression post, 2.5" al or ss tube with big plates at the coach roof and under at the top of the keel stub. No deflection there at all. Then I removed the door and the trim to figure out what was going on. There is a 3/4" quality marine plywood bulkhead between the salon and forward berth. This bulkhead is 4 pieces. Starting from the port side going towards the starboard there is a 2' piece, then a 44" piece that goes to the door jamb. The compression post is adjacent to this bulkhead and there is no deflection at all at this panel/post. Then, above the door there is a 18" header bulkhead/ply that is tabed into the big pieces on either side with a biscuit / tendon. The 18" plywood above the door slid down in its joint 5/16" crimping the door and freaking me out. There is no load on this overhead piece that I can see. All the load is on the comp. post and large bulkhead adjacent to it behind the dining settee. The trim for the door jamb has 5/8" material so I scouped out 5/16" and screwed it up into the bulkhead making it all good. Feeling better now.
 
dakno

dakno

.
Jun 22, 2009
209
Hunter 41DS new orleans
Very much so. All load is on the Heavy AL plates above and below the stout AL post, approx 3" diameter. My issue was with the small piece of plywood above the forward berth doorway which had dropped 5/16" at the inboard edge. It is simply tabbed in with a vertical keyway slot to the main bulkhead which backs the comp post compartment and held in place by some wood glue. No biggie, apparently the tab got shorted on the glue. The post is very easy to expose (5 screws on the forward and inboard sides) and comes of in 1 piece. Glad I looked for peace of mind and theres a bunch of wires and cables in there. All good
 
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