[C320-list] rigging

[Stan]

I have to respond to the sagging forestay.  I have experimented and yes in
light winds (2-6 Kts.)  I can sail somewhat faster and definetly higher with
a sagging forestay.  I know this doesn't make a lot of difference unless
your racing.  I've think/feel there is a noticable diffeence going downwind
but the wind and seas vary too much to quantify actual improvements.

Stan
"Our Little Amusement" #744


On 9/1/06, Jeff Church <jjemail at comcast.net> wrote:
>
> Bruce,
>
> > >The manual does not discuss pre-bend, does everyone tune for straigt?
> Our masts are very stiff and don't allow for much pre-bend, but if you
> adjust the forward lower shrouds tighter than the aft lowers you can
> encourage a little mast bend when you haul in the backstay adjuster.
>
> > >It also says that you can adjust for 0 to 1 percent rake....
> I think the manual calls for 1 degree of rake. I've tried 1 degree of rake
> and had a bit too much weather helm, so I reduced the rake to just about
> zero. You can get a rough idea how much rake you have if you hang
> something
> heavy from the main halyard and use it as a plumb bob. You'll have 1
> degree
> of rake if there is an 8 inch space between the back of the mast and the
> halyard, at the base of the mast.
>
> >> The backstay seems very tight and very dificult to get installed.
> I added a 2" eye jaw toggle to the backstay.
> http://schaeferhardware.com//SearchResult.aspx?CategoryID=223
>
> The C320 manual gives you the basic instructions for centering the mast,
> and
> you can get some good info from Mark Yeager's Rig Tune and Sail Selection
> article on the C320 site.
> http://www.catalina320.com/article.php/20040828173431380
> I disagree with one of Yeager's points related to rig tuning. He suggests
> adding a toggle to lengthen the forestay instead of the backstay. He says
> this will give you more mast rake, but the length of the forward lowers
> limits the maximum amount of rake to about 1 degree. At that point the
> forestay is no where near the end of its adjustment, so why add a toggle?
>
> Yeager has another curious suggestion. He says that you should be able to
> swing the forestay in a 1 foot diameter circle. I've got my rig adjusted
> for
> the amount of forestay sag that he suggests, and I haven't found a single
> point of sail or wind condition where easing the backstay adjuster all the
> way off and letting the forestay sag that much yields better boat speed.
> My
> sailmaker agrees. He checked the rig when he delivered new sails and said
> that the forestay is too loose. Also, unless you have a very long backstay
> adjuster (mine is limited by the height of the bimini) you'll have
> difficulty getting enough forestay tension. You might try for half the sag
> that Yeager calls for.
>
> I hope that helps.
>
> JeffC
>
>
>
>
>
> ----- Original Message -----
> From: <bruceheyman at cox.net>
> To: "C320-List" <c320-list at catalina320.com>
> Sent: Thursday, August 31, 2006 6:02 PM
> Subject: [C320-list] rigging
>
>
> > I'll be tuning the rig tomorrow for the first time.
> >
> > The manual does not discuss pre-bend, does everyone tune for straigt?
> >
> > It also says that you can adjust for 0 to 1 percent rake.  What does
> > everyone recommend.  We want a little weather helm.  Also I assume that
> 1
> > percent means the head of the mast will be 1 percent of the spars length
> > back from vertical.
> >
> > The backstay seems very tight and very dificult to get installed.  Since
> > it is adjustable I expected that it would be floppy when released.  Any
> > advice?
> >
> > Any other tips or lesons learned would be much appretiated.
> >
> > Bruce
> > Somerset 671 So Cal
> > Sent via BlackBerry from Cingular Wireless
> >
> > -----Original Message-----
> > From: "Richard A. Walker" <dickwalker at att.net>
> > Date: Thu, 31 Aug 2006 13:53:15
> > To:"'C320-List'" <c320-list at catalina320.com>,"'Philip Migdal'"
> > <pmigdal at san.rr.com>,"Hugh Curnutt" <hcurnut1 at san.rr.com>,"'Gregg Bambo
> > Jr.'" <MBambo at comcast.net>
> > Subject: [C320-list] Charts
> >
> >
> > Check out this site for free on-line viewing of the Governments Charts.
> >
> > http://nauticalcharts.gov/viewer/
> >
> > Cheers,
> >
> > Dick Walker
> > C-320 (687) WindWalker II
> > 740 Olive Ave.
> > Coronado, CA 92118-2136
> > 619.435.8986
> >
> >
> >
> >
> >
>
>
>


-- 
Stan
C320 "Our Little Amusement" #744
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