Masthead Sheave Material

[Captain Smollett]

The original Alberg 30 masthead sheaves were machined aluminum.  I know of a replacement source that provides custom made Delrin sheaves.

Just wondering if anyone could offer a specific reason to oppose the use of Delrin in this application.  The sheave is completely inside the mast, and the halyard is external.  The Delrin replacement has a bronze bushing at the center hole.

(Replacing the sheave to move to all-fiber halyards...the original is machined for wire only on the sheave).

[AdriftAtSea]

UV exposure would be my only concern, but as you said, the sheaves are within the mast.  :D So, I say go for it. :D