I have the same piece.  I think it acts as a chafe guard and fairlead to
prevent the spin halyards from having added friction on the sheave box
since it is not unusual for spin takedowns to be more up wind or broad wind.

Are you getting halyard wear 7 or so inches from the shackle?  From the
looks of it that would be the only option.  I get wear and I'm quite sure
that it comes from the halyard restrainer which you can see in the
picture.  The restrainer ensures 7° to 10° of separation from the furler so
that you don't get a halyard wrap.

https://drive.google.com/file/d/1G1Anc3Fr0tA5POyShj3cMdfDCVlqk-im/view?usp=drivesdk

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons, MD



On Tue, Apr 7, 2020, 07:37 David Knecht via CnC-List <cnc-list@cnc-list.com>
wrote:

> I think I have found the source of the wear on my genoa halyard and I
> believe it is the stainless steel piece that all three halyards run
> through.  The genoa halyard sits against the bottom edge of that plate
> where I can imagine it sawing back and forth.  You can see it in these
> photos:
> https://photos.app.goo.gl/cHm4Ddo7wY1eFWug6
>
> What is unclear to me is what purpose that piece serves.  I don’t see
> anything like it on any of the other masts on the mast rack that I have
> looked at.  I am very tempted to remove it, but wanted the input from the
> group before I do that.  Thanks- Dave
>
> S/V Aries
> 1990 C&C 34+
> New London, CT
>
>
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