Thanks Roy.  Grenadine has always been a freshwater boat, so corrosion is not 
an issue.

The main halyard masthead sheave is a bit buggered on one of its rims from the 
halyard jumping the sheave and being pried back out.  I don’t know if it’s a 
chafing risk for a new all-rope halyard, but it’s not that big of a deal and 
not that much cost to replace the sheaves.

Cheers,
Randy

> On Mar 15, 2023, at 9:06 PM, Leeward Rail via CnC-List 
> <cnc-list@cnc-list.com> wrote:
> 
> "The original sheaves were grooved for wire/rope halyards.  I’m replacing my 
> original halyards with all-rope Novabraid Argus," 
> 
> 
> Randy, 
> 
> The original masthead sheaves  on my 78 30 mk1, handle both wire AND rope. 
> 
> Same with the other C&Cs of the same age in our marina who switched to rope 
> halyards over the years. 
> 
> The mast head sheaves have a dual groove design. The wire sits in a narrow 
> slot at the bottom and the rope sits on top of that. 
> 
> The sheaves on the bottom are rope since the wire normally never reaches 
> them. 
> 
> Unless the sheaves are in bad shape you likely don't need to replace them. 
> Just attach the new rope to the old halyards and pull them through. 
> 
> All the boats around have spent their lives in fresh water so the sheaves 
> were in good shape. Depending on your boat I would inspect them. 
> 
> Roy 
> 78 C&C 30 Mark 1 
> 
> Please show your appreciation for this list and the Photo Album site and help 
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> Thanks for your help.
> Stu
Please show your appreciation for this list and the Photo Album site and help 
me pay the associated bills.  Make a contribution at:
https://www.paypal.me/stumurray
Thanks for your help.
Stu

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