[Public-List] furling gear and spinnaker halyard

[Jonathan Bresler via Public-List]

Charles,

A halyard that is parallel to the forestay is in danger of being wrapped
around the forestay by a roller furler.
The forces can be great enough to break the forestay as Kris related
above.  From what I've read, it appears
that the halyard should be angled of 5 to 10 degrees aft from the stay
starting at the top swivel.  The "restrainer"
should be attached to mast in order to achieve that angle.

Brion Toss writes "A furler's halyard swivel is a wonderful device,
enabling you to adjust halyard tension, even if the sail is furled. But it
is also a tremendous Achilles heel, the source of the majority of the
furler problems we see in our shop. For example, if the halyard leads too
close to the foil, and especially if the halyard is slack, it can get
caught up on the foil while you are setting or furling the sail. This is
the terrible "halyard wrap" that can make it impossible for the furler to
rotate, or for the sail to go up or down. And it can damage or destroy the
foil, the wire, and the halyard. Accordingly, every manufacturer that has a
halyard swivel is extremely emphatic on proper halyard lead and tension, as
well as optimal swivel height. Particulars vary, but the general idea is to
have the top of the swivel just a few inches below the top of the foil, and
to have the halyard angled slightly aft from the swivel. Profurl handles
both these details with their "Wrapstop", a Darth-Vader-Helmet-like object
that clamps onto the top of the stay. Other manufacturers use "halyard
restrainers" that clamp to the face of the mast, though increasingly spar
builders are finally getting around to positioning jib halyard sheaves for
an optimal furler lead, without the need for a restrainer."  (
www.briontoss.com/education/archive/miscnov03.htm)

Didnt see that the make of the roller furler is mentioned.   Constance has
a Furlex.   Page 23 of the Furlex manual talks about the restrainer.
(sailing.mit.edu/wikiupload/0/0b/Furlex_200S_Furler.pdf)

Jonathan

On Thu, Jun 23, 2016 at 10:43 PM, Kris Coward via Public-List <
public-list at lists.alberg30.org> wrote:

>
> Put a halyard restrainer on the front of the mast to help keep the jib
> and spin halyards clear enough of each other to keep this problem at
> bay. I figured this one out the hard way (by breaking the forestay with
> (jib) halyard wrap before putting the restrainer on--fortunately I was
> able to rig up the spare halyard as an emergency forestay before the rig
> got any ideas about falling over).
>
> -Kris
>
> On Thu, Jun 23, 2016 at 03:39:13PM -0400, charles pleisse via Public-List
> wrote:
> > Sookie has a spinnaker and most of the associated gear.  It all seems to
> be
> > original to the boat.  Furling gear was installed in the mid 80's.  I
> > believe the spinnaker hasn't been used since.  I discovered why last
> year.
> > As many of you probably know, the spinnaker halyard interferes with the
> > upper parts of the furling gear.  Is there any way to rig a spinnaker
> > halyard on an original mast head that will not interfere with the furler?
> >
> > Charles Pleisse
> > Sookie #221
> > _______________________________________________
> > These businesses support your Association:
> > http://www.alberg30.org/store/A30supporters.html
> > Please support them.
> > _______________________________________________
> > Public-List mailing list
> > Public-List at lists.alberg30.org
> > http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>
> --
> Kris Coward                                     http://unripe.melon.org/
> GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-List mailing list
> Public-List at lists.alberg30.org
> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>



-- 
Jonathan M Bresler
S/V Constance Alberg 30 #262
Annapolis/Eastport MD