[C320-list] Mast Cranes and Asymetrics.

Tue Aug 14 05:03:18 PDT 2007

Jeff,
Thanks.  When racing I usually pull and douse the spinaker with the jenny deployed.  As the boat is usually crashing through the waves it seems easier to be sitting windward of the hatch and have one hand on the halyard and the other pulling the sock from the leward side of the jenny and depositing it in the vee birth.

I believe my spinaker halyard is reeved through a mast head sheeve  and then to a block on the crand.  I find that on very long spinaker runs I get significant halyard shafing.  Does the mast come with the spinaker halyard exits already in place and several inches below the sheeves or is that something that you have to add?
Bruce
Somerset 671 SoCal
Sent via BlackBerry by AT&T

-----Original Message-----
From: "Jeff Church" <jjemail at comcast.net>

Date: Mon, 13 Aug 2007 21:31:40 
To:"C320-List" <c320-list at catalina320.org>
Subject: Re: [C320-list] Mast Cranes and Asymetrics.

Bruce,

When you rig a crane you would usually have the halyard exiting the mast about 3' below the masthead, bypassing the masthead sheave. I don't think there is any advantage to using an internal halyard, but when I've raised or doused the asym I haven't needed to control both the halyard and sock at the same time.  

JeffC
  ----- Original Message ----- 
  From: bruceheyman at cox.net 
  To: C320-List 
  Sent: Monday, August 13, 2007 12:40 PM
  Subject: Re: [C320-list] Mast Cranes and Asymetrics.

  Jeff and others,
  Is their an advantage to running the spinaker halyard through the mast and make use of the mast head sheeve?  I was thinking of using the extra mast head sheeve as a second jib halyard and then using the block on the crane for the spinaker.  That way when I'm setting or retriving the spinaker alone at the forward hatch I can have the spinaker halyard easily in hand while also having control of the sock.
  Bad idea?
  Bruce
  Somerset 671 SoCal
  Sent via BlackBerry by AT&T

  -----Original Message-----
  From: "Jeff Church" <jjemail at comcast.net>

  Date: Mon, 13 Aug 2007 12:29:06 
  To:"C320-List" <c320-list at catalina320.org>
  Subject: Re: [C320-list] Mast Cranes and Asymetrics.

  Bob,

  When I installed the crane, the guys at SailPlace advised me that the halyard should exit a couple of feet below the masthead, so that's what I did. 

  In retrospect, given how infrequently we use the asym, I wish I had tried to fly it before I bothered to add the crane.

  JeffC

    ----- Original Message ----- 
    From: Robert E. Sloat 
    To: C320-List 
    Sent: Monday, August 13, 2007 11:27 AM
    Subject: Re: [C320-list] Mast Cranes and Asymetrics.

    .......For the folks who added a crane, did you have to install an exit hole and 
    fitting in the mast for the spinnaker halyard going to the crane block?

    Bob Sloat
    Savannah Hull 894

    ----- Original Message ----- 
    From: "Irv Grunes" <igrunes at comcast.net>
    To: "C320-List" <c320-list at catalina320.org>
    Sent: Monday, August 13, 2007 10:03 AM
    Subject: [C320-list] Mast Cranes and Asymetrics.

    >
    > Hi,
    >
    > We are still looking at Asymetrics.  Looking for any comments on my scheme
    > below to eliminte the need for a crane.
    >
    > Found this Quantun website:
    >
    > http://www.quantumsails.com/pdf/asymmetrical%20trim%20guide.pdf
    >
    > I sent this to my sailing partner:
    > ============================================================================
    > ===================
    >
    > BUT the Quantum article says:
    >
    > --------------------------------------------------------------
    > What equipment do I need?
    >
    > . Spinnaker halyard that is above
    >
    > the forestay.
    >
    > ------------------------------------------------------------
    >
    > I am not sure of this BUT
    >
    > I think that our forestay goes to the top of the mast.
    >
    > I think the sheave for the spinnaker halyard is below it and lets assume
    > that it is on the port side.
    >
    > Then flying an asym on the port side, the halyard would not be in contact
    > with the forestay.
    >
    > Then if jibeing the asym to the starboard side, the halyard would have to
    > cross over the forestay and would probably chafe.
    >
    > As I think about it, I think the solution would be something like our
    > backstay adjuster that has the ball on the line to keep the thimble from
    > pulling up into the sheave.  If a stopper ball were put on the halyard, a
    > knot on the halyard to hold the stopper ball, and then 8 inches or so of
    > chafe guard were put on the halyard and then the shackle to the halyard.
    >
    > Then the sail would be hoisted that 8 inches or so lower, but when jibed,
    > the chafe guard would protect the halyard from the forestay.
    >
    > This would eliminate the requirement for a crane and allow us to use the
    > spinnaker halyard safely.
    >
    > I will bounce this off the list to see what response we get.
    >
    > Irv
    >
    >
    >
    >
    >
    >
    >
    >
    >
    > -----Original Message-----
    > From: Bob Seiden [mailto:theseidens at earthlink.net]
    > Sent: Sunday, August 12, 2007 8:18 PM
    > To: Irv Grunes
    > Subject: Re: Asym's
    >
    >
    > Bob
    >
    > Requesting quotes from a lot of the lofts.  Will keep you posted on the
    > quotes.
    >
    > Saw this at the quantum website.  See for setting and dousing
    >
    > http://www.quantumsails.com/pdf/asymmetrical%20trim%20guide.pdf
    >
    >
    >
    > READ IT!
    >
    >
    > We want it for running in light air.  That would seem to mean the middle
    > sail.
    >
    >
    > The diagrams seem to suggest that the head of the asymmetrical comes well
    > below the top of the mast.  Especially with a sock, that should keep the
    > head of the sail well away from anything it could chafe on.
    >
    >
    > Quantum says absolutely nothing about a crane.
    >
    >
    > me
    >
    >
    > 