Thank you all for your suggestions. I have decided to replace my wire-to-rope halyard with 3/8 Samson MLX (doublebraid cover over Dyneema core). Now my only question is whether to strip to the core for the "wire section" of the new halyard. For me, there is still the sheave question. Several of you have said your existing sheaves took a larger rope, others replaced the sheave. I do believe my 1980 LF38 main halyard sheave was intended for wire only. I don't believe I can show the photo here on this list, but I have placed it in a public Dropbox link (below) if anyone is interested to see it. The close-up shows the existing 3/16 wire in the sheave. Very careful measurements of this and other photos at different levels of magnification and angles indicate the sheave width (at the top inside - without jumping up on the "rim" of the sheave) is slightly less than double the diameter of the 3/16 wire. To me that suggests that even a 3/8 rope could squeeze down into the sheave under tension and cause a lot of friction or chafing. Seems best to strip to the core (stripping to core said to be ok with this line) for the section from inside the mast to the sail head. Comments? Dyneema at this size is supposed to be >8000 lb strength, so I think even a knot on the shackle wouldn't weaken it to any dangerous level. (I have no splicing skill.) Double bowline for slick line (tightened up under winch tension) or other suggestion? Thanks. Photo at https://www.dropbox.com/s/gb7cg1b9rovjz56/DSC_0150cropped.jpg?dl=0 Tom
On Mon, May 15, 2017 at 9:22 AM, <cnc-list-requ...@cnc-list.com> wrote: > ---------- Forwarded message ---------- > From: Dave S <syerd...@gmail.com> > To: "C&c Stus List" <cnc-list@cnc-list.com> > Cc: > Bcc: > Date: Sun, 14 May 2017 20:46:24 -0400 > Subject: Re: Stus-List Messenger line to wire halyard > This is exactly what I did as well. No problem at all. > > Dave > > > > --------- Forwarded message ---------- > From: Rick Brass <rickbr...@earthlink.net> > To: <cnc-list@cnc-list.com> > Cc: > Bcc: > Date: Fri, 12 May 2017 20:12:03 -0400 > Subject: Re: Stus-List Messenger line to wire halyard > > I replaced the wire-rope halyards on both my 25 and my 38 with all rope. > No problem with the sheeves on either. And I stitched a messemger line to > the end of the rope, pulled out the old halyard, stitched the messenger to > the end of the new halyard, and pulled it down through the mast. Easy-Peesy. > > > > And as a bonus, if you still have the oversized halyards made of yacht > braid, you can switch to a modern line and go down a size or two on the > diameter. > > > > Rick Brass > > *Imzadi *C&C 38 mk 2 > > *la Belle Aurore *C&C 25 mk1 > > Washington, NC >
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