The luff and boom lengths listed are intended as a guide to rig assembly and sail trim. Depending on the rig components you choose,
these dimensions may not always correspond exactly to the settings that are best for you. We measure boom length from the front of
the mast at the middle of the boom opening, to the back corner of the sail between the two clew grommets. The maximum boom length
is achieved at full outhaul tension with the boom positioned at the top of the boom opening. We measure luff length on a rigged sail
from the underside of the male headcap fitting (top of the mast), around the front of the mast curve to the bottom of the tack pulleys.
N
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P
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Slalom sailing has never been more fun.
Racing was never easier.
Congratulations on buying this
Sailworks NX - we’re sure you’re
going to enjoy where our
incremental development has
lead us - beyond your
wildest imagination, the
NX will take you light
years ahead.
It’s no longer speed
versus balance.
Speed = balance.
Hook in, hang on
and take the ride of
your life!
SIZE
LUFF MED. BOOM MED. BOOM MAX. WEIGHT
#
#
IDEAL
MCS
IMCS
LENGTH
m2
(cm/ft)
(cm / ft)
(cm / ft)
(kg / lbs) CAMS BTNS
MAST
CURVE % STIFFNESS 430
460
490
520
S
L
A
L
O
M
5.80 439 / 14' 5"
184 / 6' 0"
189 / 6' 2"
3.90 / 8.6
3
7
430
12.0
21 -23
x
6.20 451 / 14' 10"
192 / 6' 4"
197 / 6' 6"
4.10 / 9.0
3
7
430
12.0
21 -23
x
6.65 465 / 15' 3"
200 / 6' 7"
205 / 6' 9"
4.30 / 9.5
3
7
460
12.0
21 - 26
o
x
7.15 479 / 15' 9"
208 / 6' 10"
213 / 7' 0"
4.50 / 9.9
3
7
460
12.0
24 - 26
x
F
O
R
M
U
L
A
7.70 493 / 16' 2"
218 / 7' 2"
223 / 7' 4"
4.70 / 10.3
3
7
490
12.0
24 - 30
o
x
8.30 507 / 16' 8"
229 / 7' 6"
234 / 7' 8"
4.90 / 10.8 3
7
490
12.0
28 - 30
x
8.95 525 / 17' 3"
240 / 7' 11"
245 / 8' 1"
5.10 / 11.2
3
7
490
12.0
28 - 35
x
o
9.65 539 / 17' 8"
251 / 8' 3"
256 / 8' 5"
5.30 / 11.7
3
7
520
12.0
29 - 35
o
x
10.40 556 / 18' 3"
261 / 8' 7"
266 / 8' 9"
5.50 / 12.1
3
7
520
12.0
29 - 35
x
11.20 571 / 18' 9"
271 / 8'10"
276 / 9' 0"
5.70 / 12.5 3
7
520
12.0
29 - 35
x
Rigging & Tuning Guide
Ideal
mast
Alternate
mast
B e f o r e Y o u R i g u p
CHOOSE THE RIGHT MAST
For optimum wind range and performance use the mast length and stiffness specified for the NX
size you are rigging. Choose a high-carbon content mast that closely matches the recommended
mast compatibility. Pay particular attention to the mast length and IMCS stiffness to ensure
compatibility with the sail’s shaping and tension profile. Your mast MUST be within this required
range regardless of the brand or model. Note that NOT all sail sizes will perform effectively on the
same mast. As a rule, larger sails need longer and stiffer masts while smaller sails require shorter
and softer masts.
Heavier sailors (over 100 kg, 220 lbs.) may use masts that are slightly stiffer than specified to
increase rig tension and stability.
The following masts have been tested as compatible with the NX sails:
• Sailworks XR
• Fiberspar Reflex 5000 & 6000 series
• Powerex Z-speed
Other masts that conform to the “constant curve” profile (63~64% base & 75~76% tip) and similar
IMCS stiffness will also be compatible. See the specification chart for further mast information for
specific NX sizes.
All of the NX sails are finished with a closed-head, non-adjustable, mast sleeve. Do not use a mast
that is longer than the specified luff length. The luff and boom lengths listed are intended as a
guide to rig assembly and sail trim. Depending on the rig components you choose, these
dimensions may not always correspond exactly to the settings that are best for you. We measure
boom length from the front of the mast at the middle of the boom opening, to the back corner of
the sail between the two clew grommets. The maximum boom length is achieved at full outhaul
tension with the boom positioned at the top of the boom opening. We measure luff length on a
rigged sail from the underside of the male headcap fitting (top of the mast), around the front of the
mast curve to the bottom of the tack pulleys.
A s s e m b l y & R i g g i n g
1. INSERT THE MAST
Push back the boom-opening flap between the two diamond-shaped cutouts in the mast sleeve.
Guide the mast tip up the mast sleeve, coming
OUT
the lower boom cutout and back
IN
the upper
boom cutout. Try to keep the cams on the mast, but don’t worry if they come off – keep inserting the
mast. Do NOT try to re-seat the cambers without the boom attached and the sail fully outhauled.
Any cams that do come off the mast during mast insertion can easily be re-seated once the boom is
attached and the outhaul pulled. Pull the sail down the mast in sections by working the mast tip to
the top of the mast sleeve before pulling the tack of the sail down to the base of the mast.
Do not downhaul the sail until you are certain the headcap fitting is completely seated into the mast
tip plug. Also check that the two-piece coupling of the mast is joined completely before downhauling.
2. ATTACH THE MAST BASE
Calculate the length of mast base extension required by subtracting the mast length from your sail’s
luff length. Your mast base should have a low friction 6:1 purchase pulley system. The triple pulley
tack fitting sewn to the sail works best with 4 - 5 mm pre-stretched line. To minimize downhauling
friction, replace worn lines with a fresh line as
needed. Lace the downhaul line through the triple
tack pulley: keep the path of line looping in the
same direction each time you feed it through the
tack pulley and through your mast base pulley. We
recommend lacing the downhaul line in a counter-
clockwise direction working from the underside
pulley shiv upwards to the topside pulley shiv –
see photo. Don’t cross the lines, as this increases
friction and makes the downhaul harder to pull.
Do not fully downhaul the sail yet – stop at just
“hand-tight”.
