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TECHNICAL |
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DOYLE
UTILITY POWER SAIL (UPS) |
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Click
here for customer's comments on the Doyle UPS
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The
link between headsails and spinnakers. Wider usable
wind range than either. Sets and furls on its own luff
rope and furler. Cannot collapse like a spinnaker.
Effective wind range 33-180 degrees AWA. (see drawing
below)
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If
you stepped on an airplane and
the wings looked like this:
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Instead
of like this:
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You
might be worried - The
plane would not fly very well! |
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35 Degrees AWA
180 Degrees AWA
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Triangles
make very inefficient airfoils. Elliptical shapes reduce
the energy robbing tip vortices. This is why airplane
wings, propellers and even keels are always elliptical
rather than triangular in form. It is also why high
roach mains are so much more efficient than mains with
little or no roach. The same is true for headsails. As a
result, The racing rules limit or prohibit it.
When sailing hard on the wind the jib and main
work almost as one, and thus the combined elliptical
profile determines the aerodynamic efficiency. When
eased off, or reaching, the sails act more independently
and the geometry of each is critical to performance.
The sail designers at Doyle have developed shaping
techniques that support critical roach area in headsails
without the need for battens so you can enjoy the
efficiency of an elliptical form and have a sail that
can be easily furled!
Thus, not only does the Doyle UPS provide more area for
light air and for off the wind sailing it provides much
greater efficiency! |
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Standard Features
and Options |
Standard Features:
1. Integral Roller Furling Unit
2. Vectran Luff Line
3. Leech and Foot Lines
4. Telltales
5. Sail Bag
Options:
1. Integral Roller Furling
Unit
2.
ATN Spinnaker
Sleeve
Click here
for information
on
sail graphics.
Use
the DOYLE
Spinnaker Sail Color Program
to select the colors and pattern you want in
your sail. Actual panel layout will vary based
on sail dimensions and design. Contact your
local sailmaker for more information. |
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A
Customer Comments on the UPS |
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To Tim Stodola, Doyle Clearwater, Fl
We
flew the UPS for the first time this weekend. I am very pleased.
Easy to launch and retrieve. Can't believe how easy it was to furl
in. I'm going to get a furling line approx. 25' longer and then I
will be able to furl it in from the cockpit while releasing the
sheets i.e. I'll be able to sail it solo. The Harken 1899 is fine.
I'm glad I went with it.
With the wind at 11-12 knots from 94
degrees true, we were moving at 7 knots. I'm excited that now I'll
be able to sail in 10 knot conditions, which we have a lot of on the
Bay. Got a lot of comments from our friends on what a good looking
sail it was.
Thanks,
Lyle Erickson, Hunter 466 |
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To: Tim Stodola, Doyle Clearwater, FL
RE: Your UPS Sail is Grrrrreat !!
As you may remember, we purchased a
Doyle
UPS Sail for our Caliber 40 LRC earlier this year. This sail is
the best thing that has happened to our boat. Heavy boats sail very
slowly or not at all in the all-too-frequent light air of Tampa Bay
and the west coast of Florida. This sail allows us to enjoy sailing
in the four to eight knots of wind that previously required use of
the "Yanmar Jib". It has turned motoring days into sailing
days. More amazingly, we can sail to windward with it; I'm just
amazed at how high we can point with this sail. Finally, the roller
furling makes setting and retrieving it a breeze. Our previous boat
had an asymmetrical spinnaker, and it was a hassle for one person,
even with a sock. This UPS is a snap to use, so we don't hesitate to
put it up.
We plan to go cruising for several
months next spring and look forward to being able to sail rather
than motor much of the time.
Again, thanks for a great sail and
the excellent service you provided along with it.
Ken and Becky McAmis s/v Water
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Chris,
Finally got some good weather to test the new UPS. Believe it or
not, we've had 10-20 all season, but this weekend was perfect, with
1-10 kts poking around the islands in Casco Bay.
The UPS was easy to work with and performed very nicely on all
points of sail. In a close reach we were getting 2-3.5 kts thru the
water with 1-2 kts apparent. Only takes 1 knot indicated to keep it
full. I was especially surprised that we could pinch up tighter than
with the blade jib. I found that in really light air (1-2kts) it
pays to ease it out to get a rounder entrance at the luff. I like
the way it is cut up high to the clew, so it doesn't block forward
visibility like the 153% genoa.
Since it's so easy to furl, I roll it up rather than trying to
tack it around the outside. I rigged the sailbag on the forward
hatch as you suggested, so unclipping it from the bow roller and
dropping it down into the bag is simple. It'll get even better once
it loses some of the stiffness. Since it's so easy to deploy, I'll
probably use it rather than change up from the 110 to the 153.
The dismayed looks on the faces of the Sabre owners as we blew
past them was worth the price of the sail. A very nice investment
overall!
Chuck Yahrling |
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For
more information or to order a UPS:
1) Contact your local DOYLE loft
2) Email us at info@doylesails.com
3) Call us at 1-800-94-DOYLE
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