[Public-List] Reefing/furling

Don Campbell dk.campbell at xplornet.ca
Wed Oct 4 13:47:07 PDT 2017


Two thoughts: first the stay sail. The sail plan on the AL30 is a 
gerrymandered rig because of Humber Bay in Toronto, (also known as Slumber 
Bay). It was designed by Alberg as a  fractional rig and Kurt raised it to a 
masthead rig because of light summer winds in Toronto.  I know of only one 
deck that can withstand the force of a  baby stay without further 
reinforcement and that was Hull number 7 and sail number in the 20's, owned 
by Denis Furniss. There was an oak plank, 2" x 14" from the bulkhead to the 
deck head piece under the deck to support a windlass on that boat. Denis was 
the mold maker for Kurt. He could do as he liked on the hull . (He also had 
a roll-out double bed in the main cabin).   Consider the geometry of the 
sail plan if you do change. We already have a center of effort (CoE) that is 
aft and so helm can be a problem.  Having a sail on the forestay keeps the 
CoE of the foresail forward and also that of the combined CoE forward. 
Pointing ability will be better with the sail on the forestay. As long as 
one can establish a slot between foresail and main, things will work well. 
On the other hand, Joe Fernandez, the sail builder for most of the original 
sails on AL30s had a rule of thumb that went like this:  For racing; Up to 
15 knots use full sail allowed (163 jib and full main). Between 15 and 22 
knots use a smaller foresail (135 -150) and one reef in the main. More than 
22 knots take the main down and sail on the jib! Don't forget that you 
develop between 65 and 70% of your power from your foresail. Why you want to 
reduce that potential is questionable in my opinion.
    Second thought: As for the area of a sail and decksweepers, old math 
states the area of a triangle is 1/2 the base  x height. and height is the 
perpendicular from the apex(clew) to the base (luff). Therefore as long as 
the angle at the tack  from head to tack to the clew is less than 90 
degrees, the perpendicular to the luff is the same regardless of whether the 
sail is high cut or decksweeper.  The only way to get more area is to 
increase the perpendicular distance.
Don
-----Original Message----- 
From: Gordon Laco via Public-List
Sent: Wednesday, October 04, 2017 1:58 PM
To: George Dinwiddie via Public-List
Cc: Gordon Laco
Subject: Re: [Public-List] Reefing/furling

Yes... so long as the very tight wraps resulting from furling in heavy air 
are relieved once the yacht is in quieter conditions.

Gord #426 Surprise

On 2017-10-04, 1:55 PM, "Public-List on behalf of Rod Symmes via 
Public-List" <public-list-bounces at lists.alberg30.org on behalf of 
public-list at lists.alberg30.org> wrote:

    So - can I extrapolate from this that kinder than flaking or stuffing 
would be rolling it up on the foil because there would be no creasing ? 
(Assuming a good sunshade edge, of course )


    Cheers,  Rod

    -------- Original message --------
    From: Gordon Laco via Public-List
    Date:04-10-2017 12:42 PM (GMT-05:00)
    To: Michael , George Dinwiddie via Public-List
    Cc: Gordon Laco
    Subject: Re: [Public-List] Reefing/furling

    Hello Michael –

    In my wooden boat days, I used to punish my genoa for a bad race by 
stuffing it, and reward it for a good race by folding it...

    I’ve heard the folding vs stuffing debate too, and reckon the 
stuffing-may-be-better theory is debunked... folding generally considered by 
the industry as better for sail longevity.

    Gord #426 Surprise


    On 2017-10-04, 12:32 PM, "Public-List on behalf of Michael via 
Public-List" <public-list-bounces at lists.alberg30.org on behalf of 
public-list at lists.alberg30.org> wrote:

        There is an argument that flaking, folding and rolling a sail after
        every use is more harmful to it than just stuffing in the sailbag, 
the
        same crease more or less being constantly used.
        I compromise, stuffing during the season, and folding for winter
        storage.
        Also, I seem to recall the max dimension #1 Genoa for the Alberg 
works
        out to 163%. I had a #2 made with full luff and raised clew that 
worked
        out to 150%. It has become my go to cruising sail (I have a working 
jib
        for when things get really funky). The decksweeping feature of the 
#1
        must be a significant addition to total sail area-I have not 
calculated.
        Michael Grosh
        #220
        hanked on headsails


        ------ Original Message ------
        From: "charles pleisse via Public-List" 
<public-list at lists.alberg30.org>
        To: public-list at lists.alberg30.org
        Cc: "charles pleisse" <velocharles1 at gmail.com>
        Sent: 10/4/2017 10:51:22 AM
        Subject: [Public-List] Reefing/furling

        >As for keeping the sail out of the water, I have a slight advantage 
as
        >my
        >#1 is a 150%*+* so it is a little smaller than many and it so old 
and
        >worn
        >that it is as compliant as tissue paper.  I just untie the clue and
        >stuff
        >it in the bag as it comes down.  When I get a new #1 I'm sure it 
will
        >be a
        >little greater challenge.
        >
        >Charles Pleisse
        >College Park Bicycles
        >( <http://www.bike123.com>301)864-2211
        >
        ><https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon>
        >Virus-free.
        >www.avast.com
        ><https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link>
        ><#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
        >_______________________________________________
        >These businesses support your Association:
        >http://www.alberg30.org/store/A30supporters.html
        >Please support them.
        >_______________________________________________
        >Public-List mailing list
        >Public-List at lists.alberg30.org
        >http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org

        _______________________________________________
        These businesses support your Association:
        http://www.alberg30.org/store/A30supporters.html
        Please support them.
        _______________________________________________
        Public-List mailing list
        Public-List at lists.alberg30.org
        http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org



    _______________________________________________
    These businesses support your Association:
    http://www.alberg30.org/store/A30supporters.html
    Please support them.
    _______________________________________________
    Public-List mailing list
    Public-List at lists.alberg30.org
    http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
    _______________________________________________
    These businesses support your Association:
    http://www.alberg30.org/store/A30supporters.html
    Please support them.
    _______________________________________________
    Public-List mailing list
    Public-List at lists.alberg30.org
    http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org



_______________________________________________
These businesses support your Association:
http://www.alberg30.org/store/A30supporters.html
Please support them.
_______________________________________________
Public-List mailing list
Public-List at lists.alberg30.org
http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org 




More information about the Public-List mailing list