Join Date: Oct 2009
Location: Slidell, LA
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Harken MK II unit 1
We have Harken furlers on both headsails. The staysail furler works perfect. The genny is giving problems in that it is wrapping at the top swivel. The angle of each headstay is exactly the same. The staysail is on an external block, while the genny is on an internal sheave.
On hoisting the genny, before there is load on the halyard, it begins to move from aft of the stay, to the port side, clockwise at about 7/8's of the way up, toward the front of the foil. At full lift, under load, it has moved around 1/2 turn to the front of the foil so that the halyard attachment is directly forward of the foil. This causes the halyard to catch on the blunt end of the foil as it is rolled up, causing a thumping, binding, feel and difficulty rolling it up. It will roll up but has resistance bumps as it does so. It unrolls OK even though some bumping is detected.
The staysail upper swivel and the genny swivel feel identical and turn quite freely. I have considered a preventer mounted to the mast, and have two on hand, but know that this is a fairly recent problem and no preventer has ever been there. This boat is a 1977. The halyard is in great shape, nearly new. On the old halyard I do not remember a problem. A friend told me that the halyard may have formed a twist or set, near the top and I should install a swivel at the halyard attachment. I have also tried attaching extra shackles to lengthen the pennant at the drum, which did not help.
Last edited by ROSA; 02-25-2010 at 06:00 PM.