[Alberg30] Twin Headstays

[Jeanne]

Stephen,

Sorry about not being clear.  The question  relates to what type of back 
stay  tensioner works w/ an A30.  The  turnbuckles with wheels are 
expensive ($300+) and I do not want to split the back stay to use one of 
those triangular pull down  adjusters.  Hydraulic adjusters cost more 
than a new set of sails.  Does anyone use a block and tackle (similar to 
a strong boom vang) to twang the back stay?

Roger Kingsland

sousa, stephen (ENG) wrote:

>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.
>+---------------------------------------------------------------+
> |                This Old Boat by Don Casey                     |
> | http://www.amazon.com/exec/obidos/ASIN/0071579931/alberg30-20 |
>+---------------------------------------------------------------+
>
>Public-list mailing list -- Public-list at alberg30.org
>http://www.alberg30.org/mailman/listinfo/public-list
>To unsubscribe: email to Public-list-request at alberg30.org Include command
>"unsubscribe <password>" in subject or body. Use command "help" for more
>options.
>
> +---------------------------------------------------------------+
> |                This Old Boat by Don Casey                     |
> | http://www.amazon.com/exec/obidos/ASIN/0071579931/alberg30-20 |
> +---------------------------------------------------------------+
>
>Public-list mailing list -- Public-list at alberg30.org
>http://www.alberg30.org/mailman/listinfo/public-list
>To unsubscribe: email to Public-list-request at alberg30.org
>Include command "unsubscribe <password>" in subject or body.
>Use command "help" for more options.
>
>  
>


 +---------------------------------------------------------------+
 |                This Old Boat by Don Casey                     |
 | http://www.amazon.com/exec/obidos/ASIN/0071579931/alberg30-20 |
 +---------------------------------------------------------------+

Public-list mailing list -- Public-list at alberg30.org
http://www.alberg30.org/mailman/listinfo/public-list
To unsubscribe: email to Public-list-request at alberg30.org
Include command "unsubscribe <password>" in subject or body.
Use command "help" for more options.

 1065574752.0