Understanding Your Computer Sail Layouts
OK to proceed.
You must provide
your "OK to Proceed" before we will cut the sail.
Revision 4 Data
1. Exact sail area of proposed
163 Sq feet
2. Sail area the sail triple reefed.
The area of this mainsail after increase
the roach is 182 square foot. Hereunder is the area after reef down for all
three reef point.
After reef down to 1 reef - 144.45 square
After reef down to 2 reef - 110.55 square
After reef down to 3 reef - 82.5 square
Checking w/sail maker
3. Can you show in the drawing where the luff slides will be positioned?
Not normally provided but will ask
4. I'd like to see more roach in the sail? I'd like the roach to be (from
bottom to top) more like +8, +13, +15, +13 or even a little more, assuming
we can get it to set correctly. The is not an issue with the back stay since
the boom is shortened over the original rig.
See new Layout
5. Is the second batten from the bottom, just above the second reef too
close to the reef cringle? Will there been strain from the force of the reef
line that might over stree the batten pocket and should it be moved up a
We can move up a little. I don't think it
is that much of an issue
From bottom to top, the second
batten pocket is 12" above the third reef.
In my point of view, it has enough space
to reef down up to the third reef.
6. Your website says that a loose-footed main will not point as high as a
footed main. I had not found that comment among other sailmakers. Is that
significant? I wanted the loose-footing more for better shape in the lower
part and foot of the sail...Your comments, please.
A boomed sail is a more powerful sail. It
will point better. A loose footed sail is
more for downwind work.
7. What is the tack angle of the sail?
Will check w/sailmaker
The tack angle
is 89 degree.
Thanks for the revised plan. One thing I
want to be sure about is the
placement of the luff slides relative to the
reffing cringles. If the slide
is too close to the cringle, I won't be able
to pull the cringle to the side
and down taut with the reefing hook/pendent.
I see that for each cringle
there is a slide very close below it. Can
these be spaced so as to allow
more movement of the cringle without
stressing the sailcloth at the slide?
The Reef Crigles are normally aligned to the C measurement. Why has a C
measurement not been provided? This is the location of the reef horn so
that you do not stress the sail fore and aft.
Boom does not have reef horns, it has
hanging pendants that fit into reef tack cringle.
After your emphasis about loosing windward
ability I want to go with a
footed main using:
Bainbridge A033 slugs for the foot - Noted
Thanks and awaiting the sail maker's other
"A" measurement (aft face of mast to bearing point of tack fitting) 1-3/4"
"B" measurement (Top of boom to bearing point of tack fitting) 1-1/2"
Please review your luff and foot slides and confirm the following;
The slides number A033 will be installed on the luff as noted.
We will install 9 pcs A033 slides on foot.
We have a question because these slides only have been installed on clew
for other customers.
Please confirm it will be used for all slides on the foot.