Join Date: Sep 2010
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I'm spec'ing out the sheaves and have a couple questions. One sheave is bigger than the rest but I am not sure of the reason or if I need to follow suit. Three of the old sheaves are 2.625" and the last is 4". The big one was on the starboard stern side and is for the main halyard. My only thought is that their may be more load on this sheave and that is why it is bigger. No mechanical advantage is gained. These sheaves were for wire. I am most likely going to run line. It is more convenient to get four of the same and maybe a spare than to have an odd ball. Is it important to keep the main sheave larger for some reason that I am overlooking?
And what diameter halyard do I need?
Any recommendations on where to buy halyards, bossons chair, things of that nature?