[C320-list] Mast Cranes and Asymetrics.

[Jeff Church]

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.com>
  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
  >
  >
  >