[C320-list] Mast Cranes and Asymetrics.

[Irv Grunes]

Bob,
What a relief to know that the halyard exits above the forestay.
Thanks for the reply.
Irv Grunes #851

-----Original Message-----
From: c320-list-bounces at catalina320.com
[mailto:c320-list-bounces at catalina320.com]On Behalf Of Robert E. Sloat
Sent: Monday, August 13, 2007 12:27 PM
To: C320-List
Subject: Re: [C320-list] Mast Cranes and Asymetrics.


Irv-I have benn flying a UK Flasher asymmetric and there is no problem with
the halyard crossing the forestay on jibes. I don't have a crane and after 4
seasons of fairly regular use there is no chafing of the spinnaker haylard
of any of the
spinnaker gear.  If you were using the spinnaker for days at a time, there
may be some benefit in using a crane and the additional equipment to keep
the sock away from the mast and
possibly prevent chafing of the halyard.

The spinnaker halyard exits the mast above the forestay fitting so the
spinnaker halyard clears the forestay if properly connected to the
spinnaker.  The key when launching is to make sure that the spinnaker
halyard is in front of the forestay and does not pass through the
foretriangle.

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
>
>
>