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 > me pay the associated bills. Make a contribution at: > https://www.paypal.me/stumurray > 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