:dance: Can you say more about the size of the sheave? How do you get to it? Is it designed for the cable that connects to the swing keel or does the pendant line pass over the sheave?
Two family sailors think there may be barnacles (or zebra muscles in my fresh water on the St Lawrence) in the tube. I am inclined to attach a smaller diameter Kevlar line to the pendant in the cockpit and pull everything thru to the swing keel for the rest of the season -- but the size of the sheave could be a problem.
Please advise-- thanks
Judging from the Schaeffer single sheaves on my boat I can only guess that the sheave pulley is 1.5" X 1/2" and it's made for braid line.
I've seen this sheave/U bolt assembly close up at D&R Marine in Assonet Ma. It resembles a bow eye with a sheave attached to it. This sheave assembly was inserted into the bottom of the keel with a long tool. Then a small stainless steel backing plate with two nuts were installed from inside the cabin under the sole plate.
My pendant line is braid with an eye splice for a long shackle. The shackle pin connects to a 1/4" hole in the trailing edge of my Centerboard. My friend Ray has this same set up on his 1986 O'Day 26.
The sheave assembly fits into a small pocket way up in the keel slot. My 222 has a removable sole plate board in the cabin to gain access to the pocket where the pendant line pipe is connected and it resembles a hump which is actually the outside of the molded fiberglass pocket. You can see the strap and two nuts on top of the hump.
I can only guess that when they installed this sheave assembly at he O'Day factory, they may have run a strong twine into the pendant line pipe, then inserted the tag line into the sheave and used a long tool to get it up into the pocket after caulking the welded strap on the U bolt.
The sheave is kind of hard to see without a flashlight but you may be able to apply enough pressure on the pulley with the twine in order to turn it and make sure that it isn't broken.
One of the guys on this forum removed the sheave assembly on his O'Day 26 a few years ago and reinserted back in. His name is Ed K. and he could probably tell you more about it than I can.