The masthead sheaves are 1-1/2" dia, 3/8" thick with a 1/4" bore. Ronstan RF251 sheaves are the right size but they are plastic (acetal) for rope only. https://www.westmarine.com/buy/ronstan--replacement-sheave-1-dia-1-4-bore-3-... Or search Facebook for Merimarine. He will turn custom sheaves out of a tougher material (but still for rope only, no wire) for $15 each. Henry Monita On Wed, Jun 17, 2020, 2:45 PM Gary Froeschner <msogggf@gmail.com> wrote:
Does anyone know where to find replacement sheaves for the halyards in the masthead on a M17? I can’t seem to find any the right size on line. My boat is a 1976 M17 hull # 950. My mast is 21’-7” long.
Gary Froeschner Columbia, MO msogggf@gmail.com
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Henry Rodriguez