[C320-list] Selden Spreader End Cap Installation Query

[Dingo Is Talent]

Stephen
Can you send me your direct email or give me a call  
Hull  1150 Perth WA 

Kind regards & Thanks     
Ron (DINGO) Reddingius 
Mbl 0417 279 103

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Stephen Cox
Sent: Thursday, 28 October 2010 1:40 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Selden Spreader End Cap Installation Query

Dave,

Thanks for this info.  It definitely confirms my thoughts and my rigging
will be changed later this week.  The real question is whether I can get the
original dealer to come up with the money to pay for this.

Stephen Cox
Tegwen #1141
Canberra AUSTRALIA

> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com
> [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Utility 
> Email
> Sent: Thursday, October 28, 2010 3:13 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Selden Spreader End Cap Installation Query
> 
> Stephen
> 
> I have C320 Mk II hull 1107 and just moved my boat from San Diego to 
> Seattle by truck last month.  I also have a Selden in mast furling 
> rig.  When I unstepped the mast in SD.  I too found that the spreader 
> caps were not installed with the standing rigging in the clamping 
> hole.  Also, where the rigging was installed in the clamping hole, the 
> end cap was not clamped to the standing rigging.
> 
> I researched this through Selden and yacht riggers in both San Diego 
> and Seattle (2 cities with a very experienced and vibrant maritime 
> industry).  My research showed that the standing rigging needs to pass 
> through the clamping hole in the shroud end caps and these clamps 
> should be tightened.  I was a little surprised by this as I would have 
> thought that the Catalina dealer in Ventura, CA would have 
> commissioned the rig this way when the boat was delivered there in 
> 2007.
> 
> So the rigger in Seattle set up the standing rig gin on my Selden rig 
> to be clamped by the cap shrouds.  If I remember correctly, the 
> standing rigging that is on the diagonal is routed through the 
> clamping hole on each cap shroud.  If these is a slight vertical mis 
> alignment, remember that this is slightly corrected for with mast 
> prebend and a slight aft rake of the mast when it is tuned.
> 
> Another couple of points that I found when tuning my recently 
> restepped mast:
> 
> 1.  The standing rigging cable diameter on my boat is metric sized and 
> not inches.  Therefore, the standard C320 owners manual describing the 
> cable sizes in inches diameter incorrect for my Selden rig.  This 
> makes a difference for determining prestressed loads in the standing 
> rigging, especially if you use the US units Loos Gauge's like I did.
> The C320 IA tool loaner program worked great for me.
> 
> 2.  I hiked up the mast and adjusted my speeders to be "level" after 
> the mast was stepped and close to being tuned.
> This way I could ensure that the standing rigging geometry and 
> spreaders was at the correct angle to the mast ("level").
> 
> 3.  Remember that the standing rigging is an indeterminant system, 
> meaning one small change in standing rigging length can affect 
> significant change in the stress of other rigging.
>  Make sure to adjust and check loads often to ensure that things are 
> balanced and that the rig is "plumb" and "true."
> 
> 4.  Make sure you check your rig tuning during and after some vigorous 
> sailing.
> 
> 5.  I found the Selden Mast guide that came with my boat (also found 
> on the web) to be a great guideline.
> 
> I hope this information helps.  Good luck.
> 
> Dave Swanson
> 2007 C320 MK II, No.  1107
> S/V Emily Ann
> Mukilteo, WA      
> 
> David B. Swanson, P.E., S.E.
> Principal, LEED AP
> Director, Structural Engineering
> 
> Reid Middleton, Inc.
> (425) 741-3800 office
> (425) 741-5011 direct
> (425) 508-7971 mobile
> 
> www.reidmiddleton.com
> 
> 
> On Oct 26, 2010, at 5:32 AM, "Stephen Cox" <scox at timmin.com> wrote:
> 
> > I am in the process of preparing Tegwen #1141 for a trip
> from Batemans
> > Bay down the NSW coast and across Bass Strait to Hobart, Tasmania, 
> > then a circumnavigation of Tasmania and finally the return
> across Bass
> > Strait and back to her home port of Batemans Bay.  This is a 
> > potentially "heroic" trip and so I am wanting everything to
> be as right as I can make it.
> > 
> > This week I had the rigging checked and tuned. (It has
> always been too
> > loose IMHO and this proved to be the case). As part of this
> process it
> > came to light that the end cap in the top spreader appears to have 
> > been installed incorrectly and I am wondering if other MKII owners 
> > with the Selden rig have their top spreaders configured as mine are?
> > 
> > The end cap has two holes in it to take shrouds - one
> clamping and one
> > with no grip at all.  Tegwen's cap shrouds have been
> installed through
> > the no grip hole on the top spreader.  The Selden "HINTS
> AND ADVICE on
> > rigging and tuning of your Seldén mast" 2010-06-29 edition
> talks about
> > clamping the top spreader on a multi spreader rig.
> > 
> > I did take pictures of as much as possible when Tegwen was being 
> > readied by the dealer and the detail can be seen at 
> > http://sgcox.site.net.au/tegwen_cap_shroud_spreader_cap.htm.  While 
> > having the wit to take pictures at the time I didn't have
> the wisdom
> > then to interpret fully what now seems to be very clear.
> > 
> > I believe Tegwen was incorrectly rigged on delivery but
> just want to
> > know how others have been rigged before I take this any further.  I 
> > don't need to lose the rig on the west coast of Tasmania!
> > 
> > Stephen Cox
> > Tegwen #1141
> > Canberra AUSTRALIA
> >