[Alberg30] Twin Headstays

[sousa, stephen (ENG)]

Roger,

I follow your entire string with the exception of the last sentence. What is
the question concerning back stay adjustment hardware?

Stephen
#114

-----Original Message-----
From: Roger L. Kingsland [mailto:rkingsland101 at ksba.com] 
Sent: Tuesday, October 07, 2003 3:41 PM
To: Alberg30
Subject: [Alberg30] Twin Headstays


Albergers,

Several "Pagers" have responded to inquiries about double head stays saying
they are problematic because they necessitate doubling the head stay load.
I diligently went about designing a system to make the head stays
independently adjustable which I thought was simple and elegant but probably
would be expensive.

I made inquiries to both Mike Kaufman (the Annapolis N.A. that surveyed my
boat) and the head rigger at West Marine.  Both indicated that, if the
inactive (at rest) load on each stay is equal, the additional wind load
placed on the active stay while sailing is sufficient to slack the inactive
stay to the point where it essentially has no load on it.  This is true
regardless wind speed.  The point seems to be that the length differential
between full load and minimal load is so small that any additional load on
the active stay increases its length sufficiently to cancel the load on the
inactive one.

Of course, the problem is,  unless you want to rename your boat "Banana," it
is not practical to set both stays (at rest) to the tension appropriate for
a single stay loaded for heavy air conditions.  So, the issue boils down to
being able to increase active head tension as the wind increases.  The
solution suggested to me by the West guy seemed beautifully simple and
inexpensive, adjust the back stay tension.  This will not only increase head
stay tension but will create mast bend that will flatten the main as well.

I recall some past missives on back stay adjustment, particularly mast
pumping.  My brief survey of past postings uncovered info on stay tension
but nothing on mast pumping.  So, the three obvious questions are.  Does the
above explanation make sense or am I missing something?   Are there any
problems associated with increasing head stay tension by adjusting the back
stay?  Lastly, what back stay adjustment hardware works on an A30.

Thanks,

Roger 


Roger Kingsland
Chief Financial Officer (AKA, check writer)
Mahina Manu, A30 #148
N40°  29.288'
W79°  54.228'
 
Author's Disclaimer; This email was produced exclusively by the sender and,
in the interest of expediency, without the benefit of editing by others.
The sender, thank goodness, is a much better architect/sailor than
speller/editor and, frankly, constantly laments an obvious flaw in "spell
check," it does not know what the author is thinking.  Please accept the
sender's sincere apologies for any "typos" that may appear in this document.
If present, they are certainly unintended and hopefully do not cloud the
message, or spawn any unnecessary lawsuits.
+---------------------------------------------------------------+
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