Selden Furlex 300 H Quick start guide

Manual for assembly
and operation
Furlex 300 H &400 H
595-119-E
2016-10-26
300 H & 400 H

2
Table of contents
Product description 3
Reefing system 4
Checklist
Furlex packages 5
Forestay 6
Luff extrusion tube 6
Tools 6
Calculations
Forestay wire length 7
Luff extrusion length 7
Forestay length 8
Installation
Forestay installation to deck 9
Forestay attachment – guiding principle 10
Hydraulic motor 11
Through-Deck fitting 11
Quick couplings 11
Hydraulic hoses 12
Switch panel 13
Assembly of the Furlex-system
Assembly of the luff section 300 H 14
Assembly of the luff section 400 H 16
Forestay wire 18
Rigging screw 20
The drive unit 21
Halyard leads 22
Fitting the halyard leads 23
Rigging
Mast down 23
Mast up 23
Adjusting forestay length 24
Tensioning the forestay 24
Fitting the Sail 24
Operation
Unfurling the sail 25
Furling the sail 25
Reefing 25
Sail shape when reefed can be improved 25
Manual operation 26
Maintenance
Cleaning 27
Greasing 27
Storage 27
Dismantling
The drive unit 28
With forestay off the mast 28
With forestay rigged 28
Forestay wire 28
Luff extrusion system 29
The Hydraulic motor 30
Halyard swivel 30
The sail
Wire head pendant 31
Sample luff extrusion 31
Important points to remember
before sailing 32
PagePage

3
Product description
Furlex Hydraulic is a hydraulically operated reefing and furling system for foresails. The design
isbased on Seldén’s long experience of roller reefing, and is simple, reliable, and made for
demandingconditions.
Operation is controlled from the cockpit. The sail is fitted and rolled on to a luff foil with double
luff grooves. The luff foil is turned by a hydraulic motor operated from the cockpit switch panel.
Because rotating parts are mounted on ball bearings the sail is easily rolled in or out even under
heavy load.
The drive unit is basically a hydraulic motor driving a self-locking worm gear which holds the
sail securely when reefed.
A high degree of efficiency is assured through the patented design with large ball bearings and
few moving parts.
Two hydraulic hoses run from the motor to a through-deck fitting which has a by-pass valve.
Quick couplings permit easy removal of the drive unit.
We recommend an ecologically sound hydraulic oil for the system. This oil is biologically degra-
dable and is not harmful to either people or the environment. Hydraulic fluid for filling and rep-
lenishment must be of the same type from the same manufacturer. Fluids from different manu-
facturers, even if they are in the same class and conform to the same international specification,
must not be mixed. This also applies to different fluids within the same class from the same
manufacturer. If fluids are mixed, the characteristics of the mixture are often poorer than either
of the pure products.
A standard winch handle can be used for manual operation.
The forestay can be adjusted with a rigging-screw. Adjustment does not effect the height of the
sail above deck. The rigging-screw is sited inside the drive unit holding tube, and is perfectly
protected. It can be exposed by loosening and pushing the drive unit up the luff extrusion.
The forestay goes right through the drive unit which is free from all forestay forces. Horizontal
forces from the sail are taken up by a bushing inside the unit. The torque required for rolling in
and holding the sail in reefed condition is taken up by the stem-head fitting.
All components can easily be dismantled. Read and follow these instructions carefully, and we
will guarantee you many years pleasurable use from your Furlex Hydraulic system.

4
Reefing system
Top guard
Halyard swivel
Luff extrusion
Sail feeder
Tack ring
Drive unit
Through-deck fitting
Fig. 4.1

Drive unit c/w Tack hook, 1 off
Through-deck fitting, 1 off
Halyard swivel c/w snap-shackle, 1 off
Switch
Top guard c/w 2–4 screws, 1 off
Prefeeder 1 off
Halyard leads 508-128 c/w screws (6) and
insulating pads, 2 off
Drill bit, Ø 5.3 mm, for fitting halyard
fairleads, 1 off
300 H
Torx-key
Locking adhesive
Lubricating grease
Instructions
Certificate of guarantee
5
Checklist
Check that your set is complete.
Furlex packages

300 H:
One 1000 mm (39 3/8”) luff extrusion with
long joining sleeve.
400 H:
One 1000 mm (39 3/8”) luff extrusion with
long joining sleeve + bearing plug with
bushes
300H:
One 2000 mm (78 3/4”) luff extrusion
with distance tube.
400H:
One 1700 mm (67") luff extrusion with
distance tube
5–8 off, 2400 mm (94 1/2”) luff extrusions
with distance tube + joining sleeve
(number dependent on length ordered.)
Sail feeder
(sail feeder + sailfeeder connector.)
One long connecting plate (for sail feeder)
1000 mm (39 3/8”) luff extrusion.
One short connecting plate for each
2400 mm (94 1/2”) luff extrusion
300 H: One locking pin 3 x 25 (1/8” x 1”)
for 1000 mm (39 3/8”) luff extrusion
Forestay wire & bushing, 1 off
6
Forestay wire
Luff extrusion tube
Tools needed for assembly:
Screwdriver
Hacksaw
2 adjustable spanners (one of smaller type,
or No 16 fixed open ended)
Channel-joint Pliers
Adhesive tape
File
Marking pen, waterproof
8 mm Allen Key (400 H)
Tools
Torx Key set (supplied with kit).
Steel measuring tape (20 m) (60’7”)
Knife
For halyard leads:
Heavy-duty Philip’s screwdriver
Drill
Drill bit Ø 5.3 mm (7/32”)
(included in package)

7
Cut the new forestay wire at this length (WL, fig. 8:2)
F
G
T
Forestay wire length (see fig. 8.1)
FL
–
–
(6 profiles)
–
16.735
370
16.365
16.365
1.290
15.075
14 .400
675
400
275
Your stay
Example
ø10
300 H
Example
ø10
300 H
Your profile
Luff extrusion length (see fig. 8.2)
Shorten the distance tube for the top extrusion: (fixed measurement)
Distance tube length. G =
Calculations
1. Determine mast rake with fore and backstays tensioned.
2. Slacken off the backstay as much as possible. Use the genoa halyard to pull the masthead forward.
Tie the halyard to the boat, do not use the snap-shackle. Remove the forestay without altering the
setting of the rigging screw if fitted. Place the forestay on a smooth surface and measure its length
(FL) with the steel measuring tape.
3. Note the forestay length (FL) in the following table. The correct wire length (WL) can then be cal-
culated.
4. Measure the new wire from the centre of the hole in its end fitting. Mark off the length WL on the
wire in such a way that it cannot be eradicated. Do NOT cut the wire yet.
–
=
=
Standard deduction (A + B):
WL
A + B
New forestay wire length as per table above
–
=
–
=
=
Deduction for lower wire terminal (rigging screw 50% extended)::
Old forestay length (FL) without tension, but including rigging screw (if any). (See fig. 8.1)
WL
300 H
Ø 8 mm wire: – 360 mm
Ø 10 mm wire: – 370 mm
400 H
Ø 12 mm wire: – 490 mm
Ø 14 mm wire: – 490 mm
300 H
Ø 8 mm wire: – 1300 mm
Ø 10 mm wire: – 1290 mm
400 H
Ø 12 mm wire: – 1350 mm
Ø 14 mm wire: – 1350 mm
–
–
=
–
=
If a link or an extra toggle will be fitted then deduct its length from FL.
Note: Any additional link or toggle must have a torsional strength (torque capacity)
not less than the stem-head fitting requirement stated on page 9, second item.
E + F
E
E + F =
Max. number of 2400 mm extrusions which together are shorter than
E + F: .................off x 2400 mm = E E =
Cut the top extrusion. Chamfer the cut end with a file.
Top extrusion length F =
If F is longer than 2000 mm; Cut the top section from a 2400 mm extrusion.
If F is between 400 and 2000 mm; Cut the top section from a 2000 mm extrusion.
If F is shorter than 400 mm; Replace the topmost 2400 mm extrusion with a
2000 mm extrusion. (See E). The join will then be moved
down 400 mm. Also adjust E and F as follows: Reduce
measurement E by 400 mm. Increase the F measurement
by 400 mm. Cut the top section from a 2400 mm extrusion.
The top extrusion in normally cut from the 1700 mm (67”). If the top extrusion is shorter than 700 mm
(27 9/16”) the joint will be too near the top. In this case replace the uppermost full-length 2400 mm
extrusion with the 1700 mm extrusion. In this way the joint is moved 700 mm down the stay.
Adjust the E and F measurements as follows:
Reduce the E measurement by 700 mm.
Increase the F measurement by 700 mm.
300 H
Ø 8 mm wire: – 380 mm
Ø 10 mm wire: – 400 mm
400 H
Ø 12 mm wire: – 490 mm
Ø 14 mm wire: – 490 mm –
=
Note! Use caution when opening the roll of wire.
300 H
Ø 8 mm wire/ Ø 10 mm ø wire
400 H
Ø 12 mm wire/ Ø 14 mm ø wire

8
Fig. 8.1
Fig. 8.2
FL = Existing forestay lengthrstagsländ
A
G
EB
F
WL= Wire length
T

9
L
G
D1
Fig. 9.2
Installation
Forestay installation to deck
1. The forestay is fitted with a stout torsion-resistant lower toggle (see fig. 9.2). This is attached to
the stem-head fitting. The toggle can be fitted either athwardships or fore-and-aft.
2. Check that the stem-head fitting and the toggle are suited (see table below). The stem-head fitting
must be able to withstand a torque of 330 Nm for 300 H, or 725 Nm for 400 H. (Maximum wor-
king load).
3. Check that the drive unit goes free of the pulpit, bow anchor, or other deck equipment. (See fig.
9.1 and the table.)
Through-deck fitting
G 3/8
Fig. 9.1
Max width 170 mm
1/4” Hydraulic hoses, 2 off 1/4”
Quick couplings, 2 off
B=
A=
FL
Hv
D3
D2
4. Protect the hydraulic hoses an through-deck fitting from the anchor chain.
5. Siting of the through-deck fitting is to your choice. Send measurements A and B to Seldén Mast
AB or your dealer. We will then make up the two hydraulic hoses for the motor. See fig. 11.1 for
the through-deck fitting dimensions. A Ø 60 mm hole through the deck is required.
All measurements in millimetres
Wire Ø D1G L Ø D2Ø D3H V
8 14 15 30 57 126 298 112
10 14 15 30 57 126 298 112
12 19 19 35 76 136 398 112
12 22 23 40 76 136 403 120

Wire dimension/
Toggle Ø 8 mm Ø 10 mm Ø 12 mm Ø 14 mm
Fork/fork-toggle 517-048-02
H = 50
517-051-02
H = 55
517-52-02
H = 65
517-053-02
H = 80
T/Fork-toggle 174-124
H = 100
10
Forestay attachment - guiding principle
Mast attachment
Some Seldén forestay attachment options are shown below, illustrating the rules and exceptions. The
guiding principle is that the forestay connections should allow sufficient articulation in all directions.
In most cases a toggle should be fitted between the Furlex stay and the forestay attachments.
Fig. 10.1 Fig. 10.2
Fig. 10.3 Fig. 10.4
FL
FL
FL
H
FL
H
Forestay attachment on masthead rigs:
Always connect the stay with a toggle to give
full articulation.
Forestay attachment on fractional rigs, Seldén
type:
505-018 ø 6 &7 mm wire: Connect with an eye/
fork-toggle. 505-020 ø 8 &10 mm wire: Connect
to existing toggle.
Forestay attachment, Seldén type: O-35 (517-
905) & O-50 (517-911) Connect directly to fit-
ting.
Forestay attachment ”T-terminal” type:
Fit a T/fork toggle according to the table.

11
Installation
Hydraulic motor
The drive unit and hydraulic motor are tested before delivery.
The hydraulic motor is a Danfoss OML 12,5 cm3/revolution or a OML 20 cm3/revolution.
Maximum recommended pressure (p): 140 bar.
The oil flow (Q) gives at 10 litres/min (OML 12,5) or 20 litres/min (OML 20) a nominal speed
(n) of 40 rpm. The normal working pressure when reefing or unfurling is 40 bar when Q is 10
litres/min (OML 12,5) or 19 litres/min (OML 20).
A 24 volt hydraulic pump with an effect (P) of 1,5 kW (OML 12,5) or 3 kW (OML 20) is usually
sufficient. The advantages of 24 volt compared to 12 volt are many. For example, the amperage
is lowered by half at a given effect which means greater safety, thinner cables and lower power
loss. More about the above is available in leaflet 595-752-E, which can be provided by your
Seldén dealer.
Quick couplings
The quick couplings (fig. 11.2) are disconnected by pushing the knurled coupling sleeves out from
the coupling. The coupling sleeves have safety locks to guard against involuntary disconnection.
These are freed by twisting the locking rings until they release.
Always check that the quick couplings are locked!
Fig. 11.1
G 3/8”
By-pass valve in working position
Ø 100 mm
Ø 60 mm
40 mm
By-pass valve in position for
manual operation
Fig. 11.2
Coupling sleeve
Safety lock
Female
Quick coupling
Male
Through-Deck fitting
The main installation dimensions are shown in fig. 11.1

Relay box
Hydraulic motor Switch panel
Through-Deck fitting
Typical below decks installation.
Not supplied.
Hydraulic
Pump unit
Battery
12
Hydraulic hoses
1. Hydraulic hoses for installation below deck are not supplied. (See fig. 12.1)
2. Connecting threads are G 3/8. (See fig. 11.1)
3. Use hydraulic hoses of good quality corresponding to SAE 100R/-ISO3949. Minimum dimension
3/8”. Minimum working pressure 140 bar. Minimum recommended bending radius 150 mm (6”).
Put suitable marks on the hoses where they connect to the quick couplings. If they are crossed over
the operation of the hydraulic motor will be reversed.
Fig. 12 .1
Important! Blow through all new hoses with compressed air to clean them from pos-
sible dust and dirt before fitting. Check the system very thoroughly during assembly
to ensure that no impurities are present.
When disconnecting the quick coupling, always apply the protective covers and
sleeves supplied.

13
Switch panel
The switch panel is watertight and can be fitted in any suitable place in the cockpit.
Checks!
1. When installation has been completed, press the Reefing switch and confirm that the luff extrusion
rotates anti-clockwise.
2. Then press the Unfurling switch and confirm that the luff extrusion rotates clockwise. Change the
yellow and green leads over if this is not the case.
3. Alternatively, cross the hydraulic hoses over.
a Battery (+12/24 V)
b Battery (-)
1 –
2 –
3 Connect to control box
4 Connect to control box
Plug in terminal
2,8 x 0,5 mm
Fig. 13.1

14
Insert the locking pin
together with the locking adhesive.
Secure the pin with a piece of adhesive tape.
(The tape is removed when the lower bearing assembly is slid on.)
Note: Do not allow locking adhesive to come into contact with your skin!
Remove the 200 mm (7 3/8”)
joining sleeve from a 2400 mm (94 1/2”)
extrusion (this joining sleeve is to be used later for the
2000 mm (78 3/4”) extrusion). Connect the 2400 mm (94 1/2”) extrusion to the 1000 mm (39
3/8”) extrusion. Push the long joining sleeve of the 1000 mm (39 3/8”) extrusion into the 2400
mm (94 1/2”) extrusion until it lies flush with the lower edge of the 1000 mm (39 3/8”) extrusion.
Fit the long connecting plate at the same time as the sail feeder as shown in the diagram. Push the
joining sleeve up so that it is flush with the top edge of the sail feeder.
The long joining sleeve must be in the 1000 mm (39 3/8”) luff extrusion when commencing
assembly.
Fig. 14.1
Fig. 14.2
Fig. 14.3
Fig. 14.4
1.
2.
3.
4.
Assembly of the Furlex system
Assembly of the luff section, 300 H
Assembly should be carried out on a horizontal surface. Connect the luff extrusions one by one as
follows:

15
Fit a joining sleeve into the next 2400 mm (94 1/2”) extrusion together with a connecting plate.
Connect this to the lower extrusions. Using a spare joining sleeve, push in the distance tube from
the top until the lower joining sleeve touches the distance tube below the join. Check that the dis-
tance (J) between the end of the distance tube and the end of the extrusion is approximately half
the length of a joining sleeve.
Connect the remaining extrusions according to ”Table 2” (see page 7).
Fig. 15.1
Fig. 15.2
J
5.
6.
Fit the halyard swivel over the top end of the extrusion, slide it down as far as the sail feeder and
secure it in this position with adhesive tape. Fit the top guard and secure it with the two pre-fitted
screws. Tighten the screws until they bottom, but do not over-tighten.
Fig. 15.3
7.

16
Assembly of the Furlex system
Assembly of the luff section, 400 H
Assembly should be carried out on a horizontal surface. Connect the luff extrusions one by one as
follows:
Fit the long joining sleeve at the same time as the long connecting plate into a 2400 mm (94 1/2”)
luff extrusion and guide the sail feeder on.
Insert a distance tube (L = 2100 mm (82 11/16”)) and push the joining sleeve until it lies flush
with the lower edge of the sail feeder.
Fit the 1000 mm (39 3/8”) luff extrusion onto the connecting plate.
Push the distance tube until the long joining sleeve touches the 1000 mm (39 3/8”) luff extrusion.
Use a short joining sleeve to push the distance tube down the last part of the way. Check that the
distance (J) between the end of the distance tube and the end of the extrusion is approximately
half the length of the joining sleeve.
Fig. 16.1
Fig. 16.2
Fig. 16.3
Fig. 16.4
1.
2.
3.
4.
J

17
Fit a joining sleeve into the next 2400 mm (94 1/2”) extrusion together with a connecting plate.
Connect this to the lower extrusions. Using a spare joining sleeve, push in the distance tube from
the top until the lower joining sleeve touches the distance tube below the join. Check that the dis-
tance (J) between the end of the distance tube and the end of the extrusion is approximately half
the length of a joining sleeve.
Connect the remaining extrusions according to ”Table 2” (see page 7).
Fit the halyard swivel over the top end of the extrusion, slide it down as far as the sail feeder and
secure it in this position with adhesive tape. Fit the top guard and secure it with the four pre-fit-
ted screws. Tighten the screws until they bottom, but do not over-tighten.
5.
6.
7.
Fig. 17.1
Fig. 17.2
J
Fig. 17.3 400 H

18
Forestay wire
1. Chamfer the wire end slightly with a file.
2. Thread the wire through from the top. Should the wire snag inside the extrusions twist it anticlock-
wise past the obstruction.
3. Apply tape tightly to both sides of the cutting mark and cut the wire.
4. Slide the drive unit over the 1000 mm extrusion from below.
5.
6.
Dismantle the rigging screw wire terminal.
Thread the Terminal M piece with washer over the wire. twist the wedge on to the wire core.
Twist the outer strands correctly over the wedge (anti-clockwise seen from below).
Circular clip
Fig. 18.2
Fig. 18.1
Bushing
Terminal F Former
Wedge
Wedge
Washer
Terminal M
Terminal M
Check again that no strands lie in the wedge slot.
7.
Push the wire with wedge down into Terminal M, ensuring that the wire strands are held evenly
spread around the wedge. The wire core should protrude about 2 mm from the wedge. Tap the
wedge lightly so that the outer strands become properly wedged. Bend the outer strands inwards
slightly with the channel-joint pliers.
Fig. 18.3
ca 2 mm

19
9.
10.
Undo the terminal again and check that the strands are evenly spread. Any strands that may have
crossed each other must be separated.
Check again that no strands lie in the wedge slot.
Put a few drops of locking adhesive on the threads and screw the terminal together. Tighten hard
– this is a permanent fitting.
Note! Avoid getting locking adhesive on your skin.
Fig. 19.3
Fig. 19.2
8.
Place the former in the Terminal F piece and screw the terminal together so that the strands beco-
me formed between the wedge and the former. Avoid damaging the surface of the female terminal
piece with your spanner.
Fig. 19.1
Former
Terminal F

20
11.
Any sharp edges in the Terminal F piece caused by spanner damage should be filed down. Fit the
bushing and circular clip. Check that the bushing rotates freely and that the circular clip is pro-
perly bedded.
Fig. 20.1
Lock washer
Bushing
Terminal F
Key grip
12.
Assemble the rigging screw and lower toggle. Fully extend the rigging screw to facilitate rigging.
Temporarily fit the locking screws.
Rigging screw
Fig. 20.2
Lower toggle
Locking screws