Join Date: Aug 2008
Location: Pittsburgh, PA
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I'm rigging my new-to-me boat for the first time. It has an old, odd furling system that I can't identify. My question is about routing the halyard.
The furler uses a single, coninuous control line that takes a single pass around the drum. A wire halyard runs through a channel in the foil sections to a sheave attached to the top of the foil. The halyard is clipped, not spliced, to a 5/16 rope halyard just long enough to reach the deck. The top sheave is in an aluminum casting shaped such that the only direction for the halyard to feed off it is down. The sheave casting is fixed to the top of the foil, with no apparent provision for a swivel. There are cleats on the bottom casting of the foil above the drum, and two 3/4" plastic sheaves side by side in the drum. These smaller sheaves are in line with the top sheave.
This does not look like any kind of furling system that I have been able to find referenced on the web. It would appear to me that this unit was designed so that the halyard runs back down paralell to the foil, does a 180 under one of the small sheaves, and then cleats off on the foil. Thus, the whole shebang, halyard and all, would turn with the foil. This would put the halyard inside the furled sail, and provide no means for controlling halyard tension except from the foredeck.
Does anybody recognize this system? Is my interpretation of the halyard routing correct? Everything I've read about furling units talks about halyard wrap, proper jib halyard tension, and various adustments for same. It seems to me that adjusting halyard tension on this rig would be difficult if not impossible. Is that because, on a setup like this, halyard tension or adjustment is not an issue? It would also seem to be impossible to incur halyard wrap under any conditions. Was this perhaps a design consideration? If so, what is being traded off?
The boat is a 30' Catalina. It uses a 150 genoa. Any input would be greatly appreciated. Thanks!!
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