[C320-list] Mast Cranes and Asymetrics.

[Irv Grunes]

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:
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BUT the Quantum article says:

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What equipment do I need?

• Spinnaker halyard that is above

the forestay.

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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