A question that has plagued me for some time. Why does my boom twist up to 90deg when I reef?
My reefing setup a "jiffy reefing" setup I believe (tack is hooked separately to the boom near the gooseneck) and is as follows: I have a winch on the starboard side of the boom and a cleat to affix the working reef line. The reef line goes inside the boom and exits at a sheave at the AFT END of the hollow boom.
The reefing line then exits the aft end of the boom, goes through the leech reefing cringle and back down to the the port side of the boom where it is fixed to an eye with a bowline. The eye it is fixed to is part way up the boom, about the same fraction forward as the reef cringle is forward.
When I crank down on the reefing line the boom lifts and the line snugs the cringle up to the boom as it should, but the whole boom rotates/twists at the gooseneck. The starboard, or winch side, of the boom ends up facing the sky.
The boom is a Spartec spar and they were supposedly a really good spar maker/designer, but I wonder about the reefing lines exiting at the aft end of the boom. Other boats have the reefing line exit part way aft at a block on the starboard side instead of the aft end.
Anyone able to give hints at what's wrong (if anything at all)? If so you get extra points for doing it without the help of pictures or a diagram.