Or you can try http://racelkn.com/c27/C27rigtension.xls
[EMAIL PROTECTED] wrote:
Jim,
Try right clicking on it and select "Save As..." and save it instead of opening
it directly. Drop me a note if you are still having problems and I'll email it to you
this evening.
Chris
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
From: James Huhta <[EMAIL PROTECTED]>
Date: Mon, 7 Jul 2008 12:11:37
To: <[email protected]>
Subject: catalina27-talk: Challenge for Chris Maddox
Chris......Thanx for the quick response. I'm not a computer expert by any means. (GREAT sailor tho...) I
got to "Aria Links" and clicked on the hypertext C27rigtension.xls by "Carl Schaefer's
C27 rig tension tables" and got a MS alert that says "File couldn't be found". HELP!
After an hour of skeee-ruee-eeeing-around, I thought I'd ask you for the help. Thanx.
Jim Huhta "Sea-130" Sturgeon Bay WI
--- On Mon, 7/7/08, Chris Maddox <[EMAIL PROTECTED]> wrote:
From: Chris Maddox <[EMAIL PROTECTED]>
Subject: RE: catalina27-talk: Re: Quick Question on Shroud Hook-up Locations
To: [email protected]
Date: Monday, July 7, 2008, 8:15 AM
Jim,
I have a spreadsheet with some good data, I think it
includes TRs - see near the top of the page at
http://www.ariasails.com/links.html
Chris
-----Original Message-----
From: James Huhta <[EMAIL PROTECTED]>
Sent: Jul 7, 2008 9:07 AM
To: [email protected]
Subject: RE: catalina27-talk: Re: Quick Question on
Shroud Hook-up Locations
Good Info......Anyone out there know what he Loos Gauge
readings should be for a Cat 27 Tall Rig? Standing rigging
is si important for strutural integrity. I run with a
perhaps too loose a standing rigging; maybe I
shouldn't.
Fair Winds ...... Jim Huhta S/V "SEA 130"
Hull 4402 Sturgeon Bay, WI
--- On Sun, 7/6/08, Harvey Rosenberg
<[EMAIL PROTECTED]> wrote:
From: Harvey Rosenberg
<[EMAIL PROTECTED]>
Subject: RE: catalina27-talk: Re: Quick Question
on Shroud Hook-up Locations
To: [email protected]
Date: Sunday, July 6, 2008, 3:10 PM
Hi Phil,
When I read the word "failure" I gulped.
I sort
of understand what you are saying, but what is the
solution
for the C-27 rig.
------ Original Message ------
Received: Sun, 06 Jul 2008 03:57:21 PM EDT
From: "Phil A"
<[EMAIL PROTECTED]>
To: <[email protected]>
Subject: RE: catalina27-talk: Re: Quick Question
on
Shroud Hook-up Locations
When you tighten the fore stay, back stay, and
upper
shrouds the mast want to flex out of column, like
squeezing
a flat tooth pick from its ends. Squeeze too much
and snap.
You can see what mast pumping is by squeezing
the tooth
pick slowly (safety glasses please) in a C-Clamp
and then
gently try to move the middle back to straight. It
will act
like an over center spring and want to move to
anywhere but
straight. Without tensioned lowers the mast acts
like the
tooth pick and it wants to be anywhere but
straight. Add
the forces of sailing whether it’s the roll of
the waves
or chop or a sail buffeting and these force at
time may
move the center of the mast column to ward center
where it
doesn’t want to stay so instead of loading up
cleanly it
pumps back and forth. Let the pumping continue and
it can
work harden the aluminum at the flex point leading
to
failure.
The lowers are there to keep the mast in
column,
although mast tuning for performance may require
an
intentional bow known as pre-bend. Even when
pre-bend is
used the center of the column is restrained from
moving
about so the loads are taken cleanly, without
pumping.
Higher performance rigs start using quickly
adjustable
standing rigging known as various types of running
stays
but each adds to the risk of a demasting, as well
as,
adding to performance. Your local PHRF authority
will
penalize you for the modification, if it is
allowed at all.
Of course it is not allowed at all in one-design
racing. The
factory added adjustable rear lowers (baby stays)
to the
Santana 20 design at some point and these appear
were
accepted by their one-design rules and the change
escaped
PHRF scrutiny but that’s an exception.
Phil Agur s/v Wing Tip
Secretary, Call Sign
WCW3485
IC27/270A MMSI
366901790
www.catalina27.org Vessel Doc#
1039809
-----Original Message-----
From: [email protected]
[mailto:[EMAIL PROTECTED] On
Behalf Of
iicaptbrad
Sent: Sunday, July 06, 2008 10:42 AM
To: [email protected]
Subject: Re: catalina27-talk: Re: Quick
Question on
Shroud Hook-up Locations
Harvey,
I was going to ask a question which you may
have
touched on in your second paragraph. Mast
pumping. When
I'm sitting on my boat at the dock while just
a
moderate breeze blows, the boat occassionally
vibrates from
the rigging. I was wondering if this is normal
and if the
rigging might be too tight or loose or out of
adjustment.
The standing rigging seems tight, all shrouds and
stays,
and the mast stands straight if not for a slight
forward
tilt (not noticable unless you hang a plumb bob).
I've
gazed at the rigging while this vibration is
happening on
several occassions and noticed, I think, the mast
vibrating
fore and aft around the spreaders which leads me
to believe
the lowers are loose, but they are tight like a
violin
string. Is this what you mean by mast pumping?
Brad
----- Original Message -----
From: Harvey Rosenberg
To: [email protected]
Sent: Saturday, July 05, 2008 7:58 AM
Subject: [Norton AntiSpam] Re:
catalina27-talk: Re:
Quick Question on Shroud Hook-up Locations
Hi Andy,
Who is doing the shrouds? Is it George
over at
Samalot Marine? I can't believe he would do
that. He
must be thinking of Hunter B&R rigs. Our mast
is not a
bendable mast. You can adjust shoud tension and
rake, but
not bending it. It has to stay in column in all
four
directions. The foreward shrouds supports this.
Leading it
aft would put more stress on the leading edge of
the mast
when going upwind.
C-27's are known for their mast pumping
at dock
in high winds and this would certainly aggravate
this
condition.
Take him on a walk over at the South docks
and look
at the other C-27's. .
Where is your boat. I couldn't find it?
Regards Harvey Rosenberg C-27TR #6023, 1985
M-18
Harvey Rosenberg C-27TR
------ Original Message ------
Received: Fri, 04 Jul 2008 08:59:07 PM EDT
From: [EMAIL PROTECTED]
To: [email protected]
Subject: catalina27-talk: Re: Quick
Question on
Shroud Hook-up Locations
To List
I have a quick question. I am having
the shrouds
change on my boat (....along with a great deal of
other
work, Boat fell off its stanchions this past
March) and
while the marina was setting up the new shrouds,
he placed
the lower forward shroud at the same spot as the
upper
shroud. He now had the forward lower and the
center upper
on the same spot where I thought the upper should
be alone,
and the stern lower in the correct spot. I
questioned him
on this and he said that the center was designed
to take
the forward lower shroud and the center shroud and
the
stern lower shroud stands alone. I always though
that all
three had their on spot for hook-up. Am I wrong?
The
marina guy seemed to be sure of his answer and
mentioned
that he has done this hook-up on several Catalina
27's
before. I hope this explanation makes sense with
all the
upper and lower words used!!!
Thanks
Andy
Slow "MO" tion #6038
Nyack, NY
the world a better place one
message at a
time. Check out the i'm Talkathon. =
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