Thanks, Josh, but I'm 95% sure the sheave on my 1980 LF38 is only for wire. My telephoto shot of the wire in the sheave shows the total sheave width at the lip is slightly less than twice the width of the 3/16 wire passing through it, so I'm pretty sure a 7/16 rope in that space would either jam up or chafe outside the normal sheave use area. I did want to go to all rope, but I can't mes with trying to change the sheave just now, which I believe would bring its own difficulties. I did think about using a rope diameter less than the present 7/16, but that seems right for hand feel plus my halyard winch is self-tailing and a smaller diameter wouldn't fit well. The sheave seems only for wire (the rope part in the halyard tail never goes up that high to reach the sheave).
On Fri, May 12, 2017 at 4:38 PM, <cnc-list-requ...@cnc-list.com> wrote: > From: Josh Muckley <muckl...@gmail.com> > To: "C&C List" <cnc-list@cnc-list.com> > Cc: > Bcc: > Date: Fri, 12 May 2017 16:37:35 -0400 > Subject: Re: Stus-List Messenger line to wire halyard > I used electrical tape. I can't recall any drama from exchanging the > halyards. > > I changed from wire-rope to all rope. I recommend that you consider doing > the same. The wire can chew up the sheeve and everything inside the mast. > When it starts to fail you get fish hooks which are dangerous and even more > damaging. The wire was used because of its low stretch properties but now > with modern fibers you can accomplish the same and reduce the weight > aloft. With all rope you can filp the line end for end or freshen up the > shackle end. > > https://drive.google.com/folderview?id=0B8pEh5lnvP1ySGpOTUdGRW9xdzQ > > As for the sheeve. Since it was made for a rope-wire it is likely that it > will accommodate an all rope halyard. My sheeve was a v-groove which > facilitated my wire or rope up to 7/16" or 1/2". > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > Tom Lochhaas 11 Summer St. Newburyport, MA 01950 mobile 508.517.6926
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