The 1980 C&C 36 I once owned had those same flat SS brackets between the mast and the underside of the mast collar. I understood those brackets to prevent the upward force of the halyards and other lines from lifting/distorting the deck.
On Calypso we have a ¾" SS rod that runs from the mast step through the deck (just forward of the mast) to prevent deck lifting. With the combo of rig tension pulling up and in on the chain plates and the halyards pulling up near the mast it is not a surprise that distortion of the hull shape creates gaps around non-tabbed bulkheads. On a C&C 39 I crewed on we would often trap someone in the head by tightening up the baby stay. The fore/aft bulkhead that the head door was connected to would distort enough to lock the door shut. Typically the stunt would be used on a newbie's first sail or the owner's wife. Martin Calypso 1971 C&C 43 Seattle [cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F] From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Gary Nylander Sent: Wednesday, January 29, 2014 1:29 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List structural question I can describe them. They are made of flat stainless, about an inch wide and six to eight inches long - about 3/16 thick. They lay flat on the side of the mast and are bolted to each other through the mast with stainless bolts and nylock nuts - maybe 3/8 or so (two in a vertical plane). The hook is pointed outward to go over the mast ring. My mast ring has small indents in it on each side just the size of the hook part. Probably not mandatory, as they aren't going anywhere. Gary ----- Original Message ----- From: Sébastien Lemieux<mailto:seb.lemieu...@gmail.com> To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> Sent: Wednesday, January 29, 2014 4:21 PM Subject: Re: Stus-List structural question Any chance someone would have a photograph of those hooks? I noticed that on my 30-2 the collar is free floating and I have been attaching the halyard blocks to it without thinking about the tension being generated on the deck. Last summer, I noticed the forward panel of the port settee being detached from the hull, i'm assuming this small panel (maybe 2 square feet) acts as a partial bulkhead. On the 30-2 the "wall" of the cabin is angled, there is a clear change in the angle when the rig is tensioned. -- Sébastien Lemieux Merlot X, C&C 30-2 1988 Lake Champlain On Jan 23, 2014, at 12:16 , dwight <dwight...@gmail.com<mailto:dwight...@gmail.com>> wrote: Many of us and I think you too Dennis, on Touche, have those "J" hooks which fasten to the mast inside the cabin and the collar outside. Mine are not adjustable but I must say I have never experienced problems with doors caused either by backstay tension (the most I have ever used is 3000 lbs) or sitting on the hard...my boat rests on blocks below its keel and 6 jack stands, 3 per side which bear some of the weight of the boat, I tightened those adjustable stands hand tight only using the wing nut adjusters, no mechanical multiplier, and I check them regularly during winter storage because we often get several freeze / thaw cycles during winter, like over the last month for example. Interior doors always swing and close freely ________________________________ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com<mailto:CnC-List@cnc-list.com>
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