I have had a similar problem in the past with my 38 mk1. Don't know if the structure is the same, but it sounds similar. The fiddle behind the port settee on my boat joins the bulkhead that is the aft wall of the head, with the shrouds about 2 feet aft of the bulkhead. The fiddle to starboard joins the bulkhead that forms the aft side of the hanging locker.
My shrouds are attached to chainplates that come through the deck and behind the settees. The lower end of the chainplates are attached to substantial boxes that appear to be made of double layers of 1/2 plywood that are glassed to the inside of the hull. My problems with the door to the head binding have been when the boat is on the hard. In one case, when the boat was out of the water for several months for a refit, the backstau was left under considerable tension, and that seemed to "banana" the hull and cause the door to bind. The second time I noticed the problem, the jackstands near the bow and stern wer cranked on tight and took weight off the keel, causing the "banana" effect. I've not had a problem with the head door or the v-berth door binding other than these. Rick Brass Washington, NC -----Original Message----- From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Pete Shelquist Sent: Thursday, January 23, 2014 10:32 AM To: cnc-list@cnc-list.com Subject: Stus-List structural question I'm not sure how many other designs are like this, but the 37 doesn't have a continuous bulk head forward by the stays. Strbd is by the hanging locker and it T's about midway into the wall for the head on the port side. I'm concerned about the flexing in the hull. Long story, but the symptom is apparent when I loosen the rig over the winter and tune it each spring. In the winter I can close the door to the v berth, but once the rig is tightened up the frame is askew and the door won't close. We're talking a 1/8 -1/4". I'm cautious to not over tighten the rig and squeeze too much, but there is considerable tension to get it set up correctly. I did check to review that all the tabbing was in place and secure. I thought about just removing the door :) Is this an issue for anyone else and has anyone tackled the project to reinforce the walls in this area? Or is it just one of those things and I shouldn't worry about it unless there's significant change? Other thoughts/suggestions? Thanks, _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com