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halyard on a fractional rig
has to be from below... think about it... when the sail is deployed, where is the head of the sail—below the forestay... If you have the sheave or block above the forestay, especially with hanked on sails, since the halyard is forced to cross the forestay and will chafe on it.
With a roller furling
setup, you might be able to get away with it, provided you had the halyard exit high enough to prevent halyard wraps.
However, that is probably easier to do with the block or sheave exit below the forestay, cause of the geometry of the setup. To get the same angle of clearance between the forestay and the halyard, you need to be much greater distance above the forestay tang attachment point, than you would have to be below the forestay attachment point
. See attached drawing. The upper halyard is only about 17˚ from the forestay, compared to 20˚ for the lower halyard. Halyards are cyan, forestay is magenta, mast is black.
Originally Posted by MtHopeBay
It irks me that I can't find a picture of an installation on a fractional rig
. All the instruction manuals show masthead rigs
and the halyard block has to be below/behind the foil because there is no "above". On a fractional rig
it looks like it should work hanging it from above. Does anyone see a problem that I don't? The swiveling head looks like it would be free and clear.
The forestay has been twisted. I'm planning to replace it. More fun.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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