VQ Models SIAI MARCHETTI SF-260 Manual

SPECIFICATIONS
Wingspan:.........................1630mm (64.1in)
Length:..............................1300mm (51.1in)
Electric Motor:.....................See next pager
Glow Engine:.................... .55 - .61 2T
RTF Weight: 3.9Kg / 8.6lbs (Will vary with
Equipment Used).
Radio:......................8 Channel / 6-7 Servos
Function: Ailerons-Elevator-Rudder-Throttle
Flaps-Optional Retractable Landing Gear.
WARNING! This radio controlled model is NOT a toy. If modified or flown carelessly it could go out of controll and
cause serious human injury or property damage. Before flying your airplane, ensure the air field is spacious enough.
Always fly it outdoors in safe areas and seek professional advice if you are unexperienced.
ACHTUNG! Dieses ferngesteuerte Modell ist KEIN Spielzeug! Es ist für fortgeschrittene Modellflugpiloten bestimmt,
die ausreichende Erfahrung im Umgang mit derartigen Modellen besitzen. Bei unsachgemässer Verwendung kann
hoher Personen- und/oder Sachschaden entstehen. Fragen Sie in einem Modellbauverein in Ihrer Nähe um
professionelle Unterstätzung, wenn Sie Hilfe im Bau und Betrieb benötigen. Der Zusammenbau dieses Modells ist
durch die vielen Abbildungen selbsterklärend und ist für fortgeschrittene, erfahrene Modellbauer bestimmt.
Radio control model / Flugmodel
ALL BALSA, PLYWOOD CONSTRUCTION AND ALMOST READY TO FLY
SIAI MARCHETTI
Instruction manual / Montageanleitung
TECHNISCHE DATEN
Spannweite:...................................1630mm
Lange:............................................1300mm
Elektroantrieb.............(siehe nächste Seite)
Verbrennerantrieb:...............................10cc
Fluggewicht:.......................................3.9Kg
Fernsteuerung.............8 Kanal / 6-7 Servos
VQ No: VQA143GE - VQA143US - VQA143IT
SF-260
EP GP

Minimum 8 channel radio
for airplane with 7 servos
12x6 for .58 - 2 cycle engine
12x7 for .61 - 2 cycle engine
14x8 for Electric motor
Silicone tube
.55 ~ .61 - 2 cycle
.Motor control x1 .Aileron x 2
.Flap x 2 .Elevator x1 .Rudder x1
SILICON
EPOXY A
EPOXY B
CA
GLUE / Epoxy Glue ( 5 minute type)
Silicon sealer
Cyanoacrylate
Glue
Epoxy Glue (30 minute type)
Hobby knife
Needle nose Pliers
Phillip screw driver
Awl
Scissors
Wire Cutters
Hex Wrench
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Sander
Masking tape - Straight Edged Ruler - Pen or pencil - Rubbing alcohol - Drill and Assorted Drill Bits
REQUIRED ITEMS / Zum Betrieb wird benotigt
KLEBSTOFF
1.5mm
AB
!
CA
L/R
Assemble left and right
sides the same way.
X
Drill holes using the stated
size of drill
(in this case 1.5 mm Ø)
Use epoxy glue
Take particular care here Hatched-in areas:
remove covering
film carefully
Not included.
These parts must be
purchased separately
Check during assembly that these
parts move freely, without binding
Apply cyano glue
!
If exposed to direct sunlight and / or heat, wrinkles can appear. Storing the model in a coll
place will let the wrinkles disappear. Otherwise, remove wrinkles in covering film with a hair-
dryer, starting with low temperature. You can fix the corners by using a hot iron.
Bei Sonneneinstrahlung und / oder Warme kann die Folie erschlaffen bzw. Falten entstehen.
Verwenden Sie ein Warumluftgeblase (Haartrockner) um evtl. Falten aus der Folie zu
bekommen. Die Kanten konnen Sie mit einem Bugeleisen behandeln. Nicht zuviel Hitze
anwenden
Read through the manual before you begin, so you will have an overall idea of what to do.
CONVERSION TABLE
1.0mm = 3/64”
1.5mm = 1/16”
2.0mm = 5/64”
2.5mm = 3/32”
3.0mm = 1/8”
4.0mm = 5/32”
5.0mm = 13/64”
6.0mm = 15/64”
10mm = 13/32”
12mm = 15/32”
15mm = 19/32”
20mm = 51/64”
25mm = 1”
30mm = 1-3/16”
45mm = 1-51/64”
Li-Po Battery
5.300 - 22.2v
ESC 80A
Motor Brushless
1000 Watt
Extension cord for aileron servos: 50cm(x2)
Extension cord for flap servos: 50cm(x4)
Extension cord for retract servos: 30cm(x2)
Extension cord for Rx battery pack: 20cm(x1)

WING BOTTOM-VIEW
Using the thread (pre-installed at factory)
to slide the aileron and flap extension cord
into the wing half.
Using the adhesive tape to secure
the one end of the aileron and flap
extension cord in place.
Using the adhesive tape to secure the one
end of the aileron and flap extension cord in place.
X
30cm Extension cord
Thread
Aileron servo hatch
Turn the screws and full the aileron and
flap servo hatch out of the wing half.
Thread
Flap servo
hatch
Adhesive tape
WING TOP-VIEW
L/R
1.5mm
cut away only the covering
X
45o
Flap servo
1-Aileron extension cord installation Siai Marchetti SF-260
2- Flap servo installation
L/R

Flap pushrod
CA
Installing the flap servo on to the hatch (side-view)
Flap servo Hatch
Servo mount
Connector
WING BOTTOM
Pushrod exit hole
FLAP
3- Flap servo installation
Siai Marchetti SF-260
L/R
Plastic control horn
......2 set
............2
2mm
Connector
Flap push rod (2mm)
......2
.....2
Steel clevis
Bend the flap pushrod 35o at shown
35

90o
Aileron servo
Installing the aileron servo on to the hatch (side-view)
Aileron servo Hatch
Servo mount
WING BOTTOM
AIL.
1.5mm
cut away only
the covering
X
4- Aileron servo installation
Siai Marchetti SF-260
L/R
Plastic control horn
............2 set
Aileron push rod (2mm)
......2
.....2
Steel clevis
.....2
EZ link
Aileron linkage
Steel Clevis
EZ link

Note: Do not glue the wooden
ring to the strut at this time.
5- Electric retract and Strut installation
Siai Marchetti SF-260
L/R
X
X
2
1

6- Electric retract and Strut installation
Siai Marchetti SF-260
L/R
CA CA

Ply gear mount
plate x 2
Plywood Gear mount
x 2
3x20mm screw
.......16
Nylon gear strap
.......4
7A
Slide the landing gear onto the
plywood gear mount and push
the landing gear as shown.
7B
Using the nylon gear strap
as a template, mark the
plywood gear mount where
the four holes to be drill.
Remove the nylon gear
strap and drill a 2mm hole
at each of the four marks
marked.
7C 7D
7E
Attach the ply gear mount plate
to the plywood gear mount
Secure the ply gear mount
plate in place using CA glue.
7F 7G
Drill a 2mm holes through the
square plastic and ply gear
mount plate.
Secure the ply gear mount
using four 3x20mm screws.
CA
Reposition the nylon gear
strap and secure them in
place using four 3x20mm
screws.
2mm
CA
Attach the square plastic
onto the ply gear mount,
secure it in place using
CA glue.
7H
Square plastic
x2
TOP VIEW
BOTTOM VIEW
7- Fixed gear installation
Siai Marchetti SF-260

8- Fixed gear installation continued
Siai Marchetti SF-260
L/R
3x12mm
3x12mm self tapping screw
....................8
...........2

AB
Draw the center line
on the wing joiner
- Trial fit each part before gluing . Be certain that there are no gaps.
If the parts will join, but with a gaps, sand or trim the parts a little at
a time until the parts meet exactly with no gaps.
- Check for the correct dihedral angle
Before gluing:
- Draw the center line on the wing joiner.
30 min. Epoxy
Coat one half of the dihedral brace with epoxy up
to the center line. Install the epoxy-coated side of
the dihedral brace into the wing joiner cavity up to
the center line.
AB
CA
6x20mm dowel
2x6mm
1.5mm
1.5mm
9- Fixed gear installation
Siai Marchetti SF-260
10- Joining the wing halves
L/R
2x6mm self tapping screw
.....................4

Carefully slide the wing halves together,
ensuring that they are accurately aligned.
Firmly press the two halves together,
allowing the excess epoxy to run out.
Note: The two wing halves roots must
fit together perfectly.
Clear off the excess epoxy.
! Make sure to glue securely, If not properly glued,
a failure in flight may occur.
Glue must go inside
Wing joiner
Glue
Wing half
Hold the wing halves together with paper
clamp and rubber band.
IMPORTANT:
Please do not clean off the excess epoxy on the
wing with strong solvent or pure alcohol, only use kerosene to
keep the colour of your model not fade.
30 min. Epoxy
WING TOP-VIEW
Rubber band
(not include)
Paper clamp
(not include)
Nylon wing bolt
(included)
WING TOP-VIEW
AB
AB
AB
30 min. Epoxy
WING TOP-VIEW
AB
Siai Marchetti SF-260
11- Joining the wing halves
12- Wing tip Tank
CA
L/R

Siai Marchetti SF-260
13- Horizontal Stabilizer installing
Push the horizontal stabilizer into the slot on the fuselage
as show. Check the alignment of the horizontal stabilizer
by measuring from a fixed point along the center line of
the fuselage to the leading edge on each side of the
horizontal stabilizer. The distance must be equal on both
sides . If not, adjust the stabilizer until the measurements
are the same (see picture below: A=A’).
When you are satisfied with the alignment, use
a pencil to trace around the top and bottom of
the stabilizer where it meets the fuselage.
Cut away only
the covering
both sides.
Remove the horizontal stabilizer
from the fuselage. Using a straight edge
and a sharp hobby knife, carefully cut away
the covering inside the lines which were marked
above. Be cautious not to cut into the wood-this
will weaken the structure.
Pull the left and right elevator out of the horizontal stabilizer.
Using a sharp hobby knife, carefully cut away the covering
around of all slots for the horizontal stabilizer installation.
Cut away only
the covering
13A
13B
13C
13D
A A’
A=A’
Center point

Siai Marchetti SF-260
14- Horizontal Stabilizer installing continued
15- Rudder and Elevator
! Securely glue together. If coming off during fly, you lose control of your air plane.
CA
Apply thin CA glue where the fuselage
meet the horizontal stabilizer (both sides).
Install the horizontal stabilizer onto the fuselage and adjust the alignment as described in steep 13B.
Note: it is important to ensure that the horizontal stabilizer is also level in regards to the fuselage.
Apply the thin CA along the area where the covering was removed in the previous step and to the
fuselage where the horizontal stabilizer mounts .
Apply thin CA
glue on the top and
bottom of the hinge
HORIZONTAL STABILIZER
TOP-SIDE
CA
CA
CA

Control horn Alignment
STABILIZER
Attach the rudder control horn using the hardware provided
(two 2x15mm screws and a back plate).
Plastic control horn
2x15mm screw
............................3
.....................6
Plastic back plate
...........................3
2mm 2mm
2mm
Siai Marchetti SF-260
16- Control horn installation
17- Engine
2x12mm
! Align the mark on both engine mount
beams with the mark on the fuselage
Attach the engine mount beams onto the fire-wall
so the distance between of two engine mount beams
is “A”,and B=B’ as show.
Secure the engine mount beams onto the fire-wall
with litter CA glue (1B)
Using a pencil or felt tipped pen, mark
the fire wall where the four holes are to
be drilled(1B))
6mm
A
B
B’
B=B’
CA
A
B
B’

Reposition the engine mount beams on to the fire-wall
and secure them with four 4x25mm screw.
...................4
....................4
4x25mm screw - washer
Blind-nut
Insert the blind-nut onto each
of the four holes make above .
! Engine thrust on balk head
is already adjust at factory
140mm
FUSELAGE
3mm
SIDE-VIEW
Siai Marchetti SF-260
18- Engine continued
3mm
Position the engine to the engine mounts so the distance
from the prop hub to the fire-wall is 140mm.
Mark the engine mounting plate where the four holes are
to be drilled.
Remove the engine and drill a 3mm holes through the beam
at each of the four marks made above.
Marking sure that you drill the hole perpendicular to the beam
of the engine mount.
18A
18B
18C
18D

Using a aluminum motor mounting plate
as a template, mark the plywood motor
mounting plate where the four holes are
to be drilled.
Remove the aluminum motor mounting
plate and drill a 1/8”(3mm) hole through
the plywood at each of the four marks
marked .
3mm
! Align the mark on wooden motor mounting plate
with the mark on the fire-wall.
Using a wooden motor mounting plate as a template,
mark the fire-wall where the four holes are to be drilled.
X
To muffler
Filler tube
To engine
3x35mm screw
Rubber stopper
Checking for leaks - block the vents and blow into the
feed - if in doubt submersing the tank in a blow of
water will show up any problems.
Blow
Water
Siai Marchetti SF-260
19- Engine continued
20- Fuel tank
21- Electric Motor
Reposition the engine on the engine mount
beams, aligning it with the holes. Secure the
engine to the engine mount using four
3x25mm screws.
Note: Apply Silicon sealer to each of the
3x25mm screw and nut.
.......4
3x25mm screw
Washer
.......4
3mm nut
.......4
21A
21B
21C
3mm
X

B=B’
! Motor thrust on balk head
is already adjust at factory
6x100mm bolt.....4
6mm nut..........12
6mm washer...16
SIDE-VIEW
B’
B
FUSELAGE
Attach the four 6x100mm bolts
and nuts to the fire-wall as shown.
3mm bolt / nut...4
Secure the Motor to the wooden
motor mounting plate using the
four 3mm bolts.
5mm
Remove the wooden motor mounting
plate and drill a 5mm hole through
the fire-wall at each of the four marks
marked .
140mm
Siai Marchetti SF-260
22- Electric Motor continued
22A
22B
22C
6x100mm bolt
22D

1.5mm
Siai Marchetti SF-260
23- Nose Gear (Electric retract and strut)
90o
Rudder servo

Screw steering arm on the leg.
Slide in the front gear leg with the flat to back through the bearing
and steering arm.
Nose gear mount
3x15mm screw...4
Steering arm...1
..............1
3mm nut, washer...4
90o
Rudder servo
Siai Marchetti SF-260
24- Nose Gear (Fixed gear)
24A
Insert “z” bend of steering linkage inside the hole
of front landing gear steering arm
24B
Place the nose gear mount onto the fire-wall
and secure it in place using the four 3x15mm
screws.
Position the steering arm inside the front landing
gear mount already.
24C
24D
24E
65mm diameter wheel
4mm colar
4mm colar
4mm colar........2

................1
....................2
2mm
Connector
X
3mm set Screw
2 mm
Elevator pushrod
Elevator pushrod
Elevator push rod
Rudder push rod
Throttle push rod
Siai Marchetti SF-260
25- Servo and Linkage
LINKAGE - IN CASE OF ELECTRIC MOTOR USING
LINKAGE - IN CASE OF GLOW ENGINE USING
Elevator servo
Rudder servo
Elevator servo
Rudder servo
5mm