Sailmaker’s guideDimensions and hints to help sailmakers fit sails to Seldén rigs and equipment
595-542-E2007-02-14
CK D
F
H
2
1 IntroductionThis guide has been printed to provide sailmakers with the information necessary for them to ensure that rig and sail will be compatible. The contents cover the major part of Seldén’s production from 1977 onwards. The information generally applies to Kemp products of the same period.Masts between 1977 and 2002 are normally type E (conventional mast) or type R (In mast furling mast). Masts from ~2003 are type C (conventional masts) or type F (In mast furling masts). Each section of the guide is marked with mast type to help the reader in locating the correct information.This Guide is primarily aimed at Sailmakers, but the content should assist our end customers in making the best use of our impoved product.However, we would point out that this guide is only intended as an aid, and that variations can occur. It is the sailmaker’s responsibility to ensure that the sail suits the rig. This information will be up-dated as new products are introduced. Seldén reserves the right to change the specifications given without prior notice.
Contents Page
1 Introduction 22 Conventional masts 32.1 Mast sections 32.2 Mast deflection curves 42.3 Mainsails 42.3.1 Fitting slides 42.3.2 Sail slides E-masts 52.3.3 Sail slides C-masts 52.4 Seldén – RCB full batten System 22 6 and System 302.4.1 Dimensions 62.4.2 Parts 72.4.3 Try Sail slider 72.5 MDS Full Batten system 82.5.1 Parts 92.6 Sail Entry Gate 102.6.1 The Seldén Sail Entry Gate 102.6.2 The Seldén MDS Sail Entry Gate 112.7 Boom sections on conventional masts 122.7.1 Slab reefing and roller reefing 12 on older booms (through 1991) 2.7.2 Traditional slab-reefing booms 13 from 1991 inclusive
2.7.3 Single-reef booms as from 14 and including 1991 2.7.4 Traditional slab-reefing booms 15 on C-mast from 2003 2.7.5 Single-reef booms on C-mast from 2003 162.7.6 Running reef-hooks 172.7.7 Clews 182.8 Head measurements 193 In-mast furling mast 203.1 R section: manual, hydraulic and electro 203.2 F section: manual, hydraulic and electro 223.3 Furlex Main - Retro-fit system 243.4 Design aspects of in-mast furling mast 26 main sails4 Furling foresails 274.1 Furlex furling and reefing system 27
Page
ERCF
The following information must be given to the sail-maker by the customer:
Mainsails
Conventional mainsail with ”short” battens.
•-Mast section dimensions. • Boom section dimensions. • Sail Plan (”P” & ”E”).
Conventional mainsail with full length battens.
•-Mast section dimensions. •-Boom section dimensions. •-Sail Plan (”P” & ”E”).
In-mast furling mast mainsails•-Mast section dimensions. •-Boom section dimensions.
•-Reefing system type (Seldén in-mast furling, Furlex-Main, etc.)
Foresails Roller furling genoas.•-Furlex type. •-Total forestay length or available sail space •-Sail Plan •-Level of lower pin on furlex toggle
in relation to deck, see Fig: 4.1.a.
MDS-car
10 ± 0.75 5.5 ± 0.75 511-702
511-605
or
511-607
10 ± 0.75 5.5 ± 0.75
511-701
or
511-702
511-605
or
511-607
Mastdim
511-601
511-602
or
511-603
511-603
511-601
511-602or
511-603
511-601
511-602
or
511-603
611-601
511-601
511-601
or
511-603
Mast
Conventional masts from 2003
3
122/85
130/93
138/95
155/104
170/115
177/124
189/132
206/139
224/150
237/162
274/185
321/171
365/194
126/85
147/95
162/104
178/115
216/139
239/162
109/88
121/92
129/100
137/113
146/112
160/132
73/53
90/65
100/73
111/81
123/90
137/100
152/111
169/123
188/137
Major Diameter (170 mm)
Minor Diameter(115 mm) Fig: 2.a
Mast Luffgroove
mm
Luffgroove for bolt rope*
Sailslider
Luff Groove
mm
Slider
E-Section(10° aft face)
5.5 ± 0.75
5.5 + 1.004.0 + 1.005.0 – 0.00
5.5 ± 0.75
5.5 + 0.754.0 + 1.005.0 – 0.00
5.5 + 0.754.5 + 1.005.0 – 0.00
5.5 ± 0.75
E-Section(Round aft face)
D-Section
P-Section
5.5 + 1.004.0 + 1.005.0 – 0.00
5.5 ± 0.75
6.25 ± 0.75
2 Conventional masts
2.1 Mast sectionsMast section measurements are given as follows:Major Diameter/Minor Diameter (i.e. 170/115).Be observant of mast shape. This will help identification and the use of correct measurements.The major diameter of the mast can usually be found in the number engraved at the mast heel. For example K23-170-1233.
5.5 + 1.004.0 + 1.005.0 – 0.00
Conventional masts before 2003
*Special groove insert and sail entry gate are required to accept bolt rope. If sail slider are to be used in combination with bolt rope insert, use HA 258/A019 or Rutgerson 102.
C-Section 156/87
175/93
193/102
211/110
227/119
245/127
264/136
285/147
304/157
C156
C175
C193
C211
C227
C245
C264
C285
C304
2.3 Mainsails
2.3.1 Fitting slides
To avoid jamming in the luff groove, slides must have freedom of movement on the sail.
4
Several systems are available for full length battens. Seldén’s RCB system is shown on pages 6–7 and Seldén's MDS system is shown on pages 8–9. Refer to the relevant manufacturers concerning other systems.
Correct: Free-moving fixture Wrong: Stiff fixture
E & C
2.2 Mast deflection curves
Our spars and fittings are designed to cope with a maximum longitudinal deflection of 2% of the fore-triangle height (H). On fractional rigs the maximum deflection can be taken as being 2% of the mainsail luff (P). These values are guiding principles only.The conditions are:1) The mast forms an even curve (convex front) from deck level to mast-head.2) The deflection must be kept within the stated values, even in rough seas, by suitable longitudinal staying.The deflection curve is formed by:
It may be possible to increase the above values on some masts. However, in such cases the customer must request a special calculation for this from Seldén Mast, and have our written agreement for the increase in deflection depth.
Inner forestay checkstay
Position of mast heel(keel-stepped masts)
Backstay
Forestay
K max = 2% x H
Fore
-tria
ngle
hei
ght (
H)
Mai
n sa
il lu
ff (P
)
K max = 2% x H
Deck
K max = 2% x P
Fig: 2.2.a
Fig: 2.3.1.a Fig: 2.3.1.b
Fig: 2.2.b
Fig: 2.2.c
E & C
511-603
Art. no.
Breakingload
19
416
7
40
Aquabatten part no.
Art. no. Slider (mm)
20
67
45
206
7
68
Slider (mm)
15
408.5
20
5.1
15
8.52030
5.1
15
414
7
30
25
5.5
15
113
511-601
5.54000 N(400 Kp)
5
5
Breakingload
Fits luff groove (mm)
2.3.2 Sail slides E-mastsIt is imperative that the correct sliders are used on Seldén masts in order to fit the Seldén sail entry gate.
E
511-602
4700 N (70Kp)
2250 N (225Kp))
A 013
A 014
A 015
Fits luff groove (mm)
511-605
511-607
511-701-02
511-702-02
10
10
10 1)
10 1)
2250 N(225 Kp)
4000 N(400 Kp)
3000N(300 Kp)
2000N(200 Kp)
2.3.3 Sail slides C-masts
It is imperative that Seldén slides are used on Seldén masts in order to fit the Seldén sail entry gate.C
Fig: 2.3.2.a
Fig: 2.3.2.b
Fig: 2.3.2.c
Fig: 2.3.3.a
Fig: 2.3.3.b
Fig: 2.3.3.c
Fig: 2.3.3.d
1) For Mast sections, see page 9.
A
C
D
E
F
G
H
Rutgerson
Aquabatten
6
Fig: 2.4.1.a
RCB 22Min 59
964066666626
1500: B = 561505: B = 591510: B = 61
SDA-A 41219A 453: B = 73
2.4 Seldén – RCB full batten System 22 and System 30
2.4.1 Dimensions
Note: The leech will be closer to the backstay than when standard Seldén slides are fitted!
C
D
C
A
Same as for full battens
E
F
G
B
H
Rutgerson
The sail foot is usually reduced when old sails are retro-fitted with the Seldén-RCB Full Batten system. Cut-back should also be adjusted.
Aquabatten
(M10 Thread)
B
Aft face of mast section
Nor
mal
spac
ing
~100
0~1
000
RCB 30Min 68
108
60
80
80
104
36
–
1505: B = 59
1510: B = 61
–
Head-Board to be drilled ø 12 mm by sailmaker
E
Head-board car
7
RCB 22
RCB 30
2.4.2 Parts
The slide attachment eye is easily detached from the slide and can be sent to the sailmaker separately. It also facilitates fitting the mainsail.
2.4.3 Try Sail slider
(art. no.: 511-713)
• three sliders at the head and tack of the sail c/c 50 mm (2”). Remaining cars to be fitted with c/c ~400 mm (16”).
• For sufficient articulation always connect cars to sail via shackles.
• For less friction use Seldén Silicone lubricant (Part No. 312-506) or similar products on the track.
The car is fitted to the mast.
Fig: 2.4.2.a
Fig: 2.4.3.a
Total assemblyCarConnectors
Batten car
All-Round:Fits Rutgersonbatten fitting and others
Batten car
With M-10 screw:Fits Aquabattenbatten fitting and others
Sail car
RCB 22
RCB 30
RCB 22
RCB 30
RCB 22
RCB 30
511-595-11
511-695-11
511-590-01
511-690-01
511-598-01
511-692-01
511-590-01
511-690-01
511-581-11
511-681-11
511-581-11
511-681-11
511-581-11
511-682-11
511-595-01
511-695-01
511-581-04
511-681-04
511-581-03
511-681-03
511-581-04
511-681-04
E
G
F
E
50 mm (2”)
400 mm (16”)
Art no.
511-701-04
511-701-06
511-702-04
A
140
225
118
8
2.5 MDS Full Batten systemC
Head-Board to be drilled ø 12.5 mm by sailmaker
Sail can be connected with shackles or webbing loops
~100
0~1
000
Nor
mal
spac
ing
68
45
Dept: 45
13
74
A
Fig: 2.5.a
9
C 2.5.1 Parts and RM-limits
1) Breaking load 4000N, 2) Breaking load 6000N, 3) Breaking load 9000N, 4) Measurement see fig: 2.5.1c
Fig: 2.5.1.a
511-701-06
Fig: 2.5.1.b
511-701-03
Fig: 2.5.1.c
511-723
14
6
6.18
90 70
160 120
55 40
90 70
160 120
160 120
90 70
160 120
90 70
Max RM kNmAssemblyMh Frac.
Head board
Batten Car
Head boardcar
Sail Car
Assembly
511-701-08
511-707-01
511-702-02
511-708-01
511-701-03 M10 screw
511-701-02
511-702-03
511-702-08
511-702-041)
511-701-042)
511-701-06 3)
511-707-01
C156
C175
C193
C264
C285
C304
Section
C211
C227
C245
C264
C285
C304
C211
C227
C245
C211
C227
C245
C264
C285
C304
C156C175C193C211C227
C245C264C285C304
Parts
C211
C227
C245
C264
C285
C304
511-701-02
511-708
511-707-01
511-708-01
511-701-02
511-701-01
511-702-01
Parts
511-707
511-7234)
153-117
C156
C175
C193
166-234-01
166-234-01
153-118
511-702-01 511-7234)
511-712-01
511-712-01
511-701-02
511-701-02
511-702-02
511-702-01C156
C175
C193
10
2.6 Sail Entry Gate2.6.1 The Seldén Sail Entry Gate
The Seldén E-section sail entry gate allows reefing without needing to remove the slides from the luff groove. Ensure that the measure ment ”G” is sufficient to allow the reef cringle to be hooked on with the slides in place in the luff groove.”L”= the largest possible slide spacing as recommended by the sailmaker.Note. Remember that the reef cringles also have ”cut-back” to reduce horizontal loading on the nearest slide.(Reef Hook cut-back = "F"; page 12–14, 17)
Section Series E 122/85–274/185 & D 109/88–160/132The sail entry is i fitted with a removable gate to permit the mainsail to be fitted with either a luff rope or with slides. See fig 2.6.1.b.
Section Series E 126/85–239/162 & P 73/53–188/137From 1977 to 1979 inclusive, these sections were fitted with the sail entry gate mentioned above.Earlier sections have a dilated luff groove just above the gooseneck fitting to allow either luff rope or slides to be fed in. An extension tube, see fig. 2.6.1.d (part number 505-514-01) is obtainable as extra equipment for these masts. This allows slides to move down the luff groove to the upper edge of the gooseneck fitting, and permits reefing in the same way as in fig 2.6.1.a.
Sail Entry Gate for Full-Length Batten CarsFor sails with full-length battens and cars that run in the luff groove, a special sail entry gate is availa-ble, see fig 2.6.1.c (505-516-01 can be fitted instead of 505-501-01 and 505-524-01 can be fitted ins-tead of 505-503-01). Sail entry gate no. 505-516-01 fits sections E 138/95–274/185 and D-129/100– 160/132. Sail entry gate no. 505-524-01 fits sections E 122/85, E 130/93, D 109/28 and D 121/92.
L
G
Fig: 2.6.1.a
Fig: 2.6.1.bFig: 2.6.1.dFig: 2.6.1.c
E
Sail entry art. no. 505-501-01 or 505-503-01
Sail slide cassette kit art. no.505-514-01
Sail entry gate art. no. 505-516-01 or 505-524-01
11
2.6.2 The Seldén MDS Sail Entry Gate
The Seldén C-section sail entry gate allows reefing without needing to remove the slides from the luff groove. Ensure that the measure ment ”G” is sufficient to allow the reef cringle to be hooked on with the slides in place in the luff groove.”L” = the largest possible slide spacing as recommended by the sailmaker.Note. Remember that the reef cringles also have ”cut-back” to reduce horizontal loading on the nearest slide.(Reef Hook cut-back = "F"; page 15–17).
Instructions for the MDS sail entry gate.The MDS-sail entry gate is designed for use with MDS cars or conventional sail sliders. When using MDS cars, simply remove the sail entry gate when installing or removing the cars. When using it with conventional sliders, feed the sliders through the spring-loaded mid section of the sail entry gate.
Fig: 2.6.2.a
Fig: 2.6.2.b
Fig: 2.6.2.c Fig: 2.6.2.d
C
Sail entry gate is easily removed to fit or remove Seldén MDS cars.1. Press at the bottom of the middle gate.2. Push the Sail entry gate body downwards.
Sail entry gate is designed for use with Seldén MDS cars or conventional sail slides.
L
G
12
Usually roller reefing booms, but also slab-
reefing booms with external reefing lines occur.
5.5 + 0.754.0 + 0.754.0 – 0.00
5.5 ± 0.75
5.5 ± 0.75
5.5 + 0.754.0 + 0.754.0 – 0.00
5.5 + 0.754.5 + 0.754.0 – 0.00
2.7 Boom sections on conventional masts(Tacks, reefing hooks etc)
2.7.1 Slab reefing and roller reefing on older booms (through 1991)
Alternatives to cringles. See figs. 2.7.6.b and 2.7.6.c, page 17.
Clews, see page 18
100 mm
C
K D
F
H
Fig: 2.7.1.a
1st reef to starboard.2nd reef to port. 3rd reef to starboard.Etc.
Boomsection
Luffgroove
Sail entry gate
”cut-back”
Tack Reef hooks
No. of internalreefing lines
Reef lineattachmentat aft endof boom
GroovedSection
1977–1991
85/5886/59*
111/75128/90150/105162/125
E-Section1982–1991
189/132206/139
P-Section1969–1980
73/5390/65111/81
137/100
Cmmmm
Kmm
Dmm
Hmm
Fmm
600600
830830830830
830830
190190
205225265330
330330
6060
75756060
6060
00
10203025
2525
5050
6565105105
105105
22
2234
44
Several variationsexist. Spars must be individually
measured.
* Still in production.
Adjustable slides on tracks occur, but reefing lines can also be tied around boom.See Fig: 2.7.2.a page 13.
Reefing line tiedfast to slide on the boom. Free choice of number of
slides.
Reefing line tied around boom; see Fig: 2.7.2.a,
page 13.
E
13
2 slab reefs +1 flattening reef
3 slab reefs
3 slab reefs
4 slab reefs
4 slab reefs
2–4 slab reefs
Reef lineattachmentat aft endof boom
Reefing line tied around boom; see Fig: 2.7.2.a.
120/62
143/76
171/94
200/117
250/140
300/155
Important!1. The reefing line is tied as illustrated, with a bowline and
running noose. No. 1 reef is shown. Note that grommets are required along the foot for each reef.
2. For loose-footed sails, the reef line loop must be held in the correct postition along the boom, to ensure proper reefing. Seldén's eye slider can be used for this.
2.7.2 Traditional slab-reefing booms from 1991 inclusive
Boomsection
Luffgroove
Sail entry gate
”cut-back”
Tack Reef hooks
No. of internalreefing lines
Cmmmm
Kmm
Dmm
Hmm
F1mm
5.5 ± 0.75
6.25 ± 0.75
6.25 ± 0.75
830
830
830
830
830
830
215
160
190
250
275
100
75
80
80
100
100
77
10
20
20
20
20
37
65
80
80
110
110
Running hook
page 17
Alternatives to cringles. See figs. 2.7.6.b and 2.7.6.c, page 17.
Clews, see page 18
~ 100 mm
C
K
F
D
H
Fig: 2.7.2.b
1st reef to starboard.2nd reef to port. 3rd reef to starboard.Etc.
See page 17 for alternative tack reef hooks.
Fig: 2.7.2.a
E
14
Reef lineattachment
Reef line attached as per
Fig: 2.7.3.a
E
2 single line +2 traditionalslab reefs**
E-1800
E-1800
E-1900
E-2000
E-2500
E-600
E-700
E-850
E-950
E-1100
Cmm
2.7.3 Single-reef booms as from and including 1991
Fig: 2.7.3.b
Boomsection
Luffgroove
Sail entry gate
”cut-back”
Tack Single lines reef
No. of reef lines
120/62
143/76
171/94
200/117
250/140
mmK
mmH
mmS*mm mm mm
5.5 ± 0.75
6.25 ± 0.75
830
830
830
830
830
150
160
190
250
275
75
80
80
100
100
10
20
20
20
20
120
140
150
190
200
2 single line +1 flattening
2 single line +1 traditionalslab reef**
Max height for
reef 1(Starboard)
***
Max height for
reef 2(Port)***
* The ”S” measurement includes the shackle supplied by Seldén Mast.** Running Reef Hooks as shown on page 17 should be used for traditional 3rd and 4th slab reefs in conjunction with
Single-Line Reefs. If permanent reef hooks are used at the tack there is a risk that the sail can snag when a Single-Line Reef is shaken out.
*** ”Max height” information refer to forward reef cringle only.Comprehensive instructions on Single-Line reefs can be obtained from Seldén Mast; reference No 595-664-S, E, and -T, (in Swedish, English or German respectively.).
Dmm
Important!1. The reefing line is tied as illustrated, with a bowline and
running noose. No. 1 reef is shown. Note that grommets are required along the foot for each reef.
2. For loose-footed sails, the reef line loop must be held in the correct postition along the boom, to ensure proper reefing. Seldén's eye slider can be used for this.
Fig: 2.7.3.a
Forward reef line attached by means of a shackle supplied by Seldén Mast.
Clews, see page 18
~ 100 mm
C
K
E
C
S*
D
H
1st reef to starboard.2nd reef to port. 3rd reef to starboard.Etc.
15
Mastsection
120/62
143/76
171/94
200/117
Boomsection
171/94
200/117
250/140
2 slab reefs +1 flattening reef
3 slab reefs
3 slab reefs
4 slab reefs
3 slab reefs
4 slab reefs
4 slab reefs
80
80
80
80
110
110
110
35
20
20
20
45
20
20
80
80
80
80
100
100
100
150
165
195
270
210
250
275
850
830
830
830
830
830
830
5.5 ± 0.75
6.25 ± 0.75
5.5±0.75
130
110
110
110
180
150
150
C156
C175
C193
C211
C227
C245
Reef lineattachmentat aft endof boom
Reefing line
tied around boom;
see Fig: 2.7.4.a
2.7.4 Traditional slab-reefing booms on C-mast from 2003
Alternatives to cringles. See figs. 2.7.6.b and 2.7.6.c, page 17
Clews, see page 18
~ 100 mm
C
K
F
D
H
Fig: 2.7.4.b
1st reef to starboard.2nd reef to port. 3rd reef to starboard.Etc.
Luffgroove
Sail entry gate”cut-back”
Tack Reef hooks
No. of internalreefing linesC
(bolt rope)mm
C(MDS slides)
mmmm
K
mm
D
mm
H
mm
F
mm
See page 17 for alternative tack reef hooks.
E
Important!1. The reefing line is tied as illustrated, with a bowline and
running noose. No. 1 reef is shown. Note that grommets are required along the foot for each reef.
2. For loose-footed sails, the reef line loop must be held in the correct postition along the boom, to ensure proper reefing. Seldén's eye slider can be used for this. Fig: 2.7.4.a
C264
C285
C304
300/155 6.25± 0.75
6.25± 0.75
170 830 75 100 35Running
hookpage 17
2–4 slab reefs
C264
C285
C304
16
Reef line attached as per
Fig: 2.7.5.a
Reef lineattachment
850
830
830
830
830
830
830
130
110
110
110
180
150
150
180
190
200
120
140
150
190
35
20
20
20
45
20
20
80
80
80
80
100
100
100
Important!1. The reefing line is tied as illustrated, with a bowline and
running noose. No. 1 reef is shown. Note that grommets are required along the foot for each reef.
2. For loose-footed sails, the reef line loop must be held in the correct postition along the boom, to ensure proper reefing. Seldén's eye slider can be used for this.
Mastsection
150
165
195
270
210
250
275
5.5 ± 0.75
6.25 ± 0.75
5.5±0.75
6.25 ± 0.75
C156
C175
C193
C211
C227
C245
E-1800
E-1800
E-1900
E-2000
E-1900
E-2000
E-2500
C
120/62
143/76
171/94
200/117
171/94
200/117
250/140
Boomsection
Luffgroove
Sail entry gate”cut-back”
Tack
C(bolt rope)mm
C(MDS slides)
mmmm
K
mm
D
mm
H
mm
S
mm
2.7.5 Single-reef booms on C-mast from 2003
Forward reef line attached by means of a shackle supplied by Seldén Mast.
Clews, see page 18
~ 100 mm
K
E
C
S*
D
H
Fig: 2.7.5.b
1st reef to starboard.2nd reef to port. 3rd reef to starboard.Etc.
* The ”S” measurement includes the shackle supplied by Seldén Mast.** Running Reef Hooks as shown on page 17 should be used for traditional 3rd and 4th slab reefs in conjunction with
Single-Line Reefs. If permanent reef hooks are used at the tack there is a risk that the sail can snag when a Single-Line Reef is shaken out.
*** ”Max height” information refer to forward reef cringle only.Comprehensive instructions on Single-Line reefs can be obtained from Seldén Mast; reference No 595-664-S, E, and -T, (in Swedish, English or German respectively.).
E-600
E-700
E-850
E-950
E-850
E-950
E-1100
Max height for reef 1(Starboard)
***
Max height for reef 2
(Port)***
No. of internalreefing lines
Single line reef
2 single line + 2 tradi-tional slab reefs**
2 single line + 1 tradi-tional slab reefs**
2 single line +1 traditionalslab reefs**
2 single line +1 flattening
2 single line +1 traditionalslab reef**)
Fig: 2.7.5.a
C264
C285
C304
17
See page 13 and 15 for other tack data.
120/62
143/76
171/94
200/117
250/140
300/155
Alternatives to cringlesFirst alternative
Is used when the reefing line is attached with a shackle, such as for ”Single-Line Reefing”.
Second alternative
Improves handling when the sail is to be reefed to a permanent tack reef-hook.
Boomsection
Reef hooks
Fmm
120
120
120
130
130
130Use ”Alternative
to cringles second alternative” (Fig: 2.7.6.c)
2.7.6 Running reef-hooks
”Running” reef-hooks may be used as an alternative to fixed.
1st reef to starboard.2nd reef to port. 3rd reef to starboard.Etc.
For boom 300/155
Fig: 2.7.6.a
Fig: 2.7.6.b
F
Fig: 2.7.6.c
E & C
18
MShackleL
Outhaul car/slideBasic No.
Boom Nmin.
E & C
85/5886/59
111/75128/90
111/81137/100
507-602
See fig 2.7.7.b
90/65
2.7.7 Clews
See page 20–26 for in-mast furling mast - manual, hydraulic and electro.Outhaul cars or slides are supplied complete with shackles on all current Seldén booms. However, there are older booms from section series P 73/53–137/100 which were supplied without either. In these cases, the sail's clew is lashed to the boom end-fitting.
– – –
ø 7 mm key shackleL = 40 mm307-004
40 mm 11 mm
40 mm 11 mm
45 mm 13 mm
45 mm 13 mm
45 mm 13 mm
40 mm 8 mm
40 mm 10 mm
45 mm 10 mm
50 mm 14 mm
ø 5 mm key shackleL = 34 mm307-001
ø 8 mm key shackleL = 44 mm307-005
ø 10 mm shackleL = 44 mm307-024
ø 10 mm shackleL = 38 mm307-024
ø 8 mm shackleL = 35 mm307-026
ø 8 mm shackleL = 35 mm307-026
ø 10 mm shackleL = 38 mm307-024
ø 10 mm shackleL = 38 mm307-024
pin ø 12 x 33165-402
jaw width: 20 mm
pin ø 12 x 37165-409
jaw width: 23 mm
507-701
511-519
507-603
507-519
507-569
511-570
511-617
511-588
150/105162/125
189/132206/139
120/62
143/76
171/94
200/117250/140
200/117250/140
300/115
Fig: 2.7.7.aFig: 2.7.7.b
3562
55040
M
LN
19
A (mm)
C-mast
15°
80/280
85/295
70/280
110
100/220
130
120
”A” = 75–100 mm. (With non-
tapered
frac tional rigs
using section
D-109/88 or
E-122/85 the
measurement
is 25 mm.)
C156
C175
C193
C211
C227
C245
C264
C285
C304
E-mast
Rope halyard
To avoid the halyard splice or Talurit damaging the mast-head sheave, dimension ”B” must not be shorter than that shown.When choosing the ”B” measurement, consideration must be taken to dimension HB and the mainsail roach in relation to the backstay.
Halyard WireDimension
ø 3 mm 200 140
ø 4 mm 230 150
ø 5 mm 260 170
ø 6 mm 300 200
ø 7 mm 350 230
ø 8 mm 400 250
Wire halyard
RopeDimension
”B” mmKnot
ø 6 mm 60 430
ø 8 mm 70 430
ø 10 mm 80 430
ø 12 mm 90 440
ø 14 mm 100 440
2.8 Head measurementsSee page 20–23 for In-mast furling mast and page 24–25 for Furlex Main - Retro-fit system.
For other halyard boxes the ”B” measurement is calculated from the upper edge of the sheave to the topmost point of the sail.
”B” mmTalurit-SplicedHalyard Eye
”B” mmHand-SplicedHalyard Eye
”B” mmSpliced
HB
Fig: 2.8.a Fig. 2.8.b
BB
250
A
E & C
15°
70
110
100
110
110
120
110
100
0°
90
120
110
130
130
130
125
120
175
15°
80/280
115/280
100/265
105
90
120
100
120
0°
90/295
120/295
105/280
115
100
130
110
130
120
MastheadFractional
std/long carneTapered
std/long carne
Luff extrusionMast section
mm
ø10.0
ø10.0ø12.0
RB
RC
Aquabatten AO32
Mast section
20
3.3
ø10.62)
ø7.2
Design aspects on in-mast furling main sails, see page 26.
190/94213/104235/116
Max space available
in chamber
3.254.0
ø8.01)ø30
Sail com part-
ment
Sail slotApprox maxfoot length
E max4)
Spare luff groovein mast
Luff groove
Dia-meter
Type
ø85ø90ø100
13.5 ± 3375040004500
15 ± 3
15 ± 3
15 ± 3
3.25
3.25
ø13.0
RA
RD
ø25
ø38
ø58
2.75 ± 0.25
3.25 ± 0.35
3.25 ± 0.25
3.25 ± 0.25
ø6.0
ø10.6
–
Aquabatten AO32 or Rutgerson 101
Aquabatten AO32
Aquabatten AO33 or
Rutgerson 102
Luff groove Max space available for luff tape
Slide
mmmmmmmmmmmmmmmm mm mm
7500
60007000
475055005500
ø174
ø124ø154
ø110ø114ø114
290/150 324/169 3)
214/122232/126260/136
370/192 3)
Sail compartment
Luff groove
Luff tape
3 In-mast furling mast 3.1 R section: manual, hydraulic and electro
Clew with clew-board: Foot (”E”) measured to after point of sail.Clew-board gives longer effective (”E”) than integrated block or normal cringle.
Clew with integrated block:Foot (”E”) measured to after point of block.
Alternative clew executionsE
Fig: 3.1.a Fig: 3.1.b
E
1) 1995 and earlier: ø10 2) Max ø7 mm luff tape due to new sail entry (2001). 3) For sails with horizontal battens, an optional sail guide can be provided art. no 535-811-01. 4) When the sail is fully furled, 300 mm of Emax will remain outside the mast due to reinforcement and clew-board.
Sail slot
Luff tape
Luff groove
R
For motorised Furling
200
Boomsection
Mast section
190/94213/104235/116
21
128/90150/105162/125189/132206/139
*For RCB car 511-617:320
120/62143/76171/94200/117250/140
600600600
140150150
200* 200*
250250250350350
300/155
Tmm
Boom toggle size
Amm
Bmm
400400400
400400400
500500
500
757575
808080
9090
–
–
125125125
135135
135
120 mm80 mm
700
700700
650650650
290/150324/169
214/122232/126260/136
370/192
OSmm
395
100
Red mark(s) may be used to indicate when sail is fully unfurled.
T
70
20
85° – 88°
OS E
30
A
Max
. sai
l spa
ceB
60
50
Mea
sure
men
t to
cent
re o
f boo
m
brac
ket (
mar
ked)
.
R
Fig: 3.1.c
Mast section Luff extrusion
F176 ø85 RA 3750
F194 ø93 RA 4200
RA 4500F212 ø100
RB 4400
F228 ø108 RA 5000
RB 4900
F246 ø114 RB 5400
F265 ø123 RB 6000
RC 5800
F286 ø133 RB 6500
RC 6300
RB 6900
F305 ø141 RC 6700
RD 6000
Section dim., Iy Ix Wall thick- Weight Wymin. Wx
min.
X/Y mm ness, mm kg/m cm4
cm4 cm3 cm3
Furling masts F176 176/93 526 187 2,90 4,12 58,2 40,0
F194 194/101 709 254 3,05 4,69 70,8 49,8
F212 212/109 970 337 3.15 5.45 88,2 61,8
F228 228/118 1306 453 3.4 6.30 112 76.8
F246 246/126 1781 613 3.75 7.37 139 97.3
F265 265/135 2392 828 4.15 8.66 173 122
F286 286/146 3237 1122 4.5 10.02 220 154
F305 305/156 4389 1513 5.05 11.75 276 194
Section
Aquabatten AO32
Sections
RA ø25 2.75 ± 0.25 ø6
RB ø30 3.25 ± 0.35 ø8
RC ø38 3.25 ± 0.25 ø10
RD ø58 3.25 ± 0.25 ø10
Max space for luff tape
mm
Dia-meter
mm
Slide
Luff groove
Luff groove
22
3.2 F section: manual, hydraulic and electroF
X
Y
Clew with clew-board: Foot (”E”) measured to after point of sail.Clew-board gives longer effective (”E”) than integrated block or normal cringle.
Clew with integrated block:Foot (”E”) measured to after point of block.
Alternative clew executionsE
Fig: 3.2.a Fig: 3.2.b
E
17±3 3.25±0.25 10
15±3 3.25±0.25 8
15±3 3.25±0.25 6 –
Sail com-part ment
Sail slotApprox maxfoot length
E max1)
Spare luff groovein mast Luff grooveType
Aquabatten AO31 or
Rutgerson 101
Max space available for luff
tape mm mmmmmmmmmmmm mm
Sail slot
Sail compartment
Luff groove
Luff tapeLuff tape
1) When the sail is fully furled, 300 mm of Emax will remain outside the mast due to reinforcementt and clew-board.
Design aspects on in-mast furling main sails, see page 26.
Mast section
For motorised Furling
A B T A B T A B T A B T
F176 600 400 80
F194 600 400 80
F212 600 400 80
F228 600 400 80 650 400 80
F246 650 400 80
F265 650 400 125 700 500 130
F286 650 400 125 700 500 130
F305 650 400 125 700 500 130 700 500 135
Boomsection
120/62 140
143/76 150
171/94 150
200/117 200*
250/140 200*
300/155 395
23
*For RCB car 511-617:320
RA RB RC RD
OSmm
100
200
Red mark(s) may be used to indicate when sail is fully unfurled.
T
70
20
85° – 88°
OS E
30
A
Max
. sai
l spa
ceB
60
50
Mea
sure
men
t to
cent
re o
f boo
m
brac
ket (
mar
ked)
.
F
Fig: 3.2.c
24
5000
The luff extrusion is asymmetrically shaped in order to help overcome initial resistance when starting to furl. Do not use heavy sail-cloth in the luff area.
Head and tack webbing bands should be of soft quality which can fold easily. 20 mm is a suitable width. Do not use metal cringles on them.
Battens must be located on the port side of the sail so as not to snag on the inside of the sail compartment.
If clew cringles are used they must not be thicker than 14 mm in order to fit the outhaul block. The upper part of the luff extrusion will be kept centered by the halyard swivel, while most of the
section will rest on the aft face of the sail compartment when sailing. The luff curve must have a wedge formed into it for compensation (0 to 30 mm) at the upper 500–800 mm of the luff.
ø30
Luff extrusionFurlex Main – Other section
Sail cham-
ber
Sail slot Max. foot length recommended
”E”
Spare luff groovein mast
Max space available
in chamber
Luff groove
Dia-meter
TypeFurlexMainType
13.5 ± 3
a15 ± 3
3.253.25
3.25
ø9.4ø9.4
ø10.0
RA
RB
ø25 2.75 ± 0.25
3.25 ± 0.35
ø6.0
ø8*
Aquabatten AO31 or
Rutgerson 101
Aquabatten AO32 or
Rutgerson 101
Luff groove Max space available for luff tape
Slide
mmmmmmmmmmmmmmmm mm mm mm
35004000
ø108
ø76ø90
Type 76Type 90
Type 108
Sail chamber
Luff groove
Luff tape chamber
Luff tape
Luff groove
3.3 Furlex Main - Retro-fit system
Clew with clew-board: Foot (”E”) measured to after point of sail.Clew-board gives longer effective (”E”) than integrated block or normal cringle.
Clew with integrated block:Foot (”E”) measured to after point of block.
Alternative clew executions
E
Fig 3.3.a Fig 3.3.b
E
*1995 and earlier: ø10
Sail slot
7690108
25
180180260
Furlex-MainType
600600650
A
270270270
B
606065
T OS
20
BM
ax. s
ail s
pace
60
A
30
EOS
85°–88°T
Mea
sure
men
t to
hori
zont
al p
in
50
Fig 3.3.c
Sail cloth type In general, single layer cloth (e.g. Dacron ™ ) folds easier around the luff extrusion than multi-layer laminate cloth, causing less furling resis-tance. ”Softer” sail cloth therefore allows more sail to be furled into the mast. Sail cloth gene-rally becomes softer with time, so a new sail can cause more furling resistance than a sail that has been used for some time.
Sail cloth dispositionThe luff extrusion is asymmetrically shaped in order to help overcome initial resistance when starting to furl. Do not use heavy sail cloth in the luff area.
Clew dropA furling main sail should have a ”negative” clew-drop of approximately 85° – 88° (see fig. 3.2.c). This increases leech tension when fur-ling and prevents the lower part of the sail roll becoming too bulky. Note that when the sail is furled, the weight of the sail may cause the clew to move downwards.
Luff curve shapeThe upper part of the luff extrusion will be kept centered by the top swivel, while most of the luff extrusion will rest on the aft face of the sail compartment when sailing. The luff curve must have a wedge formed into it for compensation (0-to 30 mm) at the upper 500 – 800 mm of the luff.
Clew reinforcementThe clew reinforcement should be made so that it allows the sail to be furled in leaving approx-imately 300 – 500 mm outside the mast.
Webbing tapeHead and tack webbing tapes should be of soft quality which can fold easily. A suitable width is 20 mm. Do not use cringles.
Luff tapeAvoid using luff tape close to head and tack. The high loads in head and tack may damage the luff tape. (See fig. 3.2.c)Clew cringlesIf clew cringles are used they must not be thick-er than 14 mm in order to fit the outhaul block.
Batten typesThe main batten types used in furling main sails are: full-length vertical battens, short ver-tical battens and horizontal (foldable) battens. Experience has shown that vertical battens work very well whereas horizontal battens have a tendency to snag in the sail slot when the sail is furled out. For sails with horizontal battens (only F-sections) an optional sail guide can be provided (see fig. 3.4.a). If full-length vertical battens are used, round battens generally work bet-ter than square battens since square battens can twist. If short vertical battens are used, square battens often work well and are usually less bulky.
Batten locationBattens must be located on the port side of the sail so as not to snag on the inside of the sail compartment.
End fittings, connectors and tensioning arrangementEnd fittings, connectors and tensioning arrang-ement (vertical battens) should be made as slim as possible. Bulky solutions may cause the bat-tens to snag in the sail slot.
Short vertical battens – vertical displacementShort vertical battens should be located so that they do not overlap each other vertically. The lowest batten should not overlap the clew rein-forcement.
3.4 Design aspects on in-mast furling mast main sails
26
Fig: 3.4.a
27
Hyd
raul
icM
anua
lH
ydra
ulic
Man
ual
Furlex
Type/Serie
500 H 1295675620100ø7ø960/46
640
400 H 48/34 ø8 ø6.5 100 620
550 490
610 1230
4 Furling foresails4.1 Furlex furling and reefing system
See relevant Furlex manual for further information regar ding sail geometry, reefing hints and location of UV-protection.
ø5
C
3.0
A 360
540
B
Max sail space
FL -(F+E)FL
1100 mm
CBE
F
Sails with a luff considerably shorter (more than 500 mm) than the maximum permissible must be fitted with a permanent head pendant. The total luff length including pendant should be just less than the ”Max. sail space” dimension.
Fig: 4.1.a
Fig: 4.1.b
Fig: 4.1.c
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
Sectiondimension
Luffgroove
Max. space available in
chamber
Maximum sail space FL–(F+E)(Measurement calculated fromexisting forestay length: FL).
F+Emm
Emm
Fmm
CBmmmmmmmm
Cut-back
ø6
ø6
ø7
ø8
ø7
ø8
ø9
ø6
ø6
ø7.5
ø7.5
ø5
ø6
ø6
ø6
ø6
ø7
ø5
ø5
ø6.5
ø6.5
60
60
80
100
80
100
100
60
60
80
80
390
540
620
540
620
620
375
550
280
340
420
490
520
675
675
295
330
400
730
960
1110
1060
1295
1295
670
870
950
1040
Max. lufftape
26/17
31/20
40/27
50/34
40/27
50/34
60/46
26/17
31/21
39/27
39/27
D
C-Hydraulic
D-Hydraulic
E-Hydraulic
100 S ø6
3.0 ø6 ø5 60 360 280 64026/17100 S ø4 & 5
200 S
300 S
3.0
3.0
ø8
ø9
ø6.5
ø7
95
95
620
620
535
535
1155
1155
48/34
60/46
400 S
500 S
300 H
min. 50 mm
Luff grooveFurlex toggleheight
Lower pin on furlex toggle Luff tape
chamber
595-
542-
E
Prin
ted
in S
wed
en.
Seldén Mast AB, Sweden Tel +46 (0)31 69 69 00Fax +46 (0)31 29 71 37 e-mail [email protected]
Seldén Mast Limited, UK Tel +44 (0) 1329 504000Fax +44 (0) 1329 504049 e-mail [email protected]
Seldén Mast Inc., USA Tel +1 843-760-6278 Fax +1 843-760-1220 e-mail [email protected]
Seldén Mast A/S, DK Tel +45 39 18 44 00 Fax +45 39 27 17 00 e-mail [email protected]
Seldén Mid Europe B.V., NLTel +31 (0) 111-698 120Fax +31 (0) 111-698 130e-mail [email protected]
Seldén Mast SAS, FRTel +33 (0) 251 362 110Fax +33 (0) 251 362 185e-mail [email protected]
www.seldenmast.com
Dealer:
DINGHIESKEELBOATSYACHTS
The Seldén Group is the world’s leading manu-
facturer of masts and rigging systems in carbon
and aluminium for dinghies, keelboats and yachts.
The Group consists of Seldén Mast AB in Sweden,
Seldén Mast A/S in Denmark, Seldén Mast Ltd
in the UK, Seldén Mid Europe B.V. in the Nether-
lands, Seldén Mast SAS in France and Seldén
Mast Inc in the USA. Our well known brands
are Seldén and Furlex. The worldwide success of
Furlex has enabled us to build a network of over
750 authorised dealers covering the world’s mari-
ne markets. So wherever you sail, you can be sure
of fast access to our service,
spare parts and know-how.