[Public-List] working jib size

[Bill Ydel]

Let me endorse Bacon's as well, I purchased a new sail from them last year
and could not be more pleased.

Bill
SallyB #441
Charleston, SC

-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Mike Lehman
Sent: Wednesday, February 08, 2012 7:31 AM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] working jib size

Glenn

You may want to contact Bacon's in Annapolis for a new sail. They made a new

mail for me and a full luff working jib for Mike Meinhold. They are very 
reasonable. Talk with Gary or Steve 410-263-4880. Tell them I told you to 
call...they are one of our advertisers in the handbook, so they support the 
organization.

-----Original Message----- 
From: Meinhold, Michael J.
Sent: Tuesday, February 07, 2012 7:29 PM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] working jib size

Glenn -
The official Chesapeake Bay A30 Rules working jib is an 82% - this is
LP/J not an area ratio.

I don't know about roller furling, but below is a table with the Luff
Perpendicular worked out for each of the
jibs shown in the A30 Sail Plan. The Chesapeake Bay One Design rules
specify these numbers as max dimensions for the Working Jib and the #1,
but say only that the #2 must  be smaller in every dimension than the
#1.
The J shown in the Sail Plan is 10 feet 5 inches.

          Luff   Foot Leech   LP    LP/J%
Working  30.00  10.25 25.75  8.52  0.82
#2       32.00  15.00 30.25 14.06  1.35
#1       34.00  19.00 33.50 18.09  1.74

LP can be found directly from the three sides of a triangle as :
LP = sqrt ( foot^2 - ( (leech^2-foot^2-luff^2)/(2*luff) )^2 )

Mike
Rinn Duin #272
-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of
brooks.glenn at comcast.net
Sent: Tuesday, February 07, 2012 7:21 PM
To: Alberg 30 Public List -- open to all
Subject: [Public-List] working jib size


Anybody have an idea of what the ideal working jyb measurements might be
for the A-30 with roller furling?


I have an older jyb that came with Dolce that I never use, but today
just dusted it off and measured at (luff 24' , foot 13'). This seems a
bit long in the foot for a working jyb, but maybe it was designed as a
110% laper under the old cca rules. North sails quoted a working jyb at
36' luff X 10' foot, which is about a 100% of the foretrangle area. my
old jyb is actually about 24 Sq ft smaller than North's proposed jyb. I
am going to put it on tghe boat and do a little sea trial in the few
days, but am wondering in advance how the sailing characteristics may
differ between the two different sail configurations and how it might
affect the boat.


Thanks for any info you all might be able to offer.


Glenn P
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