Seagull Models YAK 11 User manual

1
Specications:
Wingspan--------------- 70.9 in (180.0 cm)
Wing area--------------- 850.3 sq.ins (54.9 sq.dm)
Weight------------------- 13.2 lbs (6.0 kg)
Length------------------- 54.6 in (138.8 cm)
Engine/Motor size----- 30-35cc gasoline
Radio--------------------- 7 channels with 7 servos
ASSEMBLY MANUAL
Code : SEA 302

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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ank you for choosing the RENO AIR CARE YAK-11 “PERESTROIKA” ARTF by SG
MODELS . e RENO AIR CARE YAK-11 “PERESTROIKA” was designed with the inter-
mediate/advanced sport yer in mind. It is a semi scale airplane which is easy to y and quick
to assemble. e airframe is conventionally built using balsa, plywood to make it stronger than
the average ARTF, yet the design allows the aeroplane to be kept light. You will nd that most
of the work has been done for you already. e motor mount has been tted and the hinges
are pre-installed. Flying the RENO AIR CARE YAK-11 “PERESTROIKA” is simply a joy.
is instruction manual is designed to help you build a great ying aeroplane. Please read
this manual throughly before starting assembly of your RENO AIR CARE YAK-11 “PERE-
STROIKA” Use the parts listing below to indentify all parts.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is ca-
pable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & REPONSIBILITY.
If you are inexperienced with basic R/C ight we strongly recommend you contact your R/C
supplier and join your local R/C model Flying Club. R/C Model Flying Clubs oer a variety
of training procedures designed to help the new pilot on his way to successful R/C ight.
ey will also be able to advise on any insurance and safety regulations that may apply.
INTRODUCTION
WARNING
KIT CONTENTS
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3
4
5
6
7
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KIT CONTENTS
SEA302 RENO AIR CARE YAK-11
“PERESTROIKA”
1. Fuselage
2. Wing set (2)
3. Tail set (2)
4. Canopy
5. Cowling
6. Wing tube
7. Pilot
8. landing gear
9. Fuel tank
10. Tail wheel
11. Pushrod set
12. Spinner
ADDITIONAL ITEMS REQUIRED
TOOLS & SUPPLIES NEEDED
in cyanoacrylate glue.
Medium cyanoacrylate glue.
30 minute epoxy.
5 minute epoxy.
Hand or electric drill.
Assorted drill bits.
Modelling knife.
Straight edge ruler.
2mm ball driver.
Phillips head screwdriver.
220 grit sandpaper.
90° square or builder’s triangle.
Wire cutters.
Masking tape & T-pins.
read-lock.
Paper towels.
�30-35cc gasoline engine.
�Computer radio 7 channel with 7
servos.
�Glow plug to suit engine.
�Propeller to suit engine.
�Protective foam rubber for radio
system.
HINGING THE FLAP
.
2x10mm
1.
2.
3.
4.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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HINGING THE AILERON
Note : e control surfaces, including the ailer-
ons, elevators, and rudder, are prehinged with
hinges installed, but the hinges are not glued in
place. It is imperative that you properly adhere
the hinges in place per the steps that follow us-
ing a high-quality thin C/A glue.
Carefully remove the aileron from one of
the wing panels. Note the position of the
hinges.
Remove each hinge from the wing panel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the wing
panel until the T-pin is snug against the wing
panel. is will help ensure an equal amount
of hinge is on either side of the hinge line
when the aileron is mounted to the aileron.
Slide the wing panel on the aileron until
there is only a slight gap. e hinge is now
centered on the wing panel and aileron.
Remove the T-pins and snug the aileron
against the wing panel. A gap of 1/64” or
less should be maintained between the
wing panel and aileron.
NOTE : e hinge is constructed of a spe-
cial material that allows the C/A to wick
or penetrate and distribute throughout
the hinge, securely bonding it to the wood
structure of the wing panel and aileron.
Deect the aileron and completely satu-
rate each hinge with thin C/A glue. e
ailerons front surface should lightly con-
tact the wing during this procedure. Ide-
ally, when the hinges are glued in place,
a 1/64” gap or less will be maintained
throughout the lengh of the aileron to the
wing panel hinge line.
T-pin
Hinge
Hinge
Epoxy
5.
1.3.
4.
2.

5
Turn the wing panel over and deect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge, making sure that the C/A penetrates
into both the aileron and wing panel.
Using C/A remover/debonder and a paper
towel, remove any excess C/A glue that may
have accumulated on the wing or in the
aileron hinge area.
Repeat this process with the other wing
panel, securely hinging the aileron in
place.
Aer both ailerons are securely hinged,
rmly grasp the wing panel and aileron to
make sure the hinges are securely glued
and cannot be pulled out. Do this by care-
fully applying medium pressure, trying to
separate the aileron from the wing panel.
Use caution not to crush the wing struc-
ture.
Work the aileron up and down sev-
eral times to “work in” the hinges
and check for proper movement.
Note :
INSTALL THE AILERONS
CONTROL HORN
5.
Locate the aileron and ap control horns.
e taller control horn is used for the ailer-
ons, and the shorter horn for the aps.
Use sandpaper to scu the bottom of the
aileron and ap control horns. Use a paper
towel and isopropyl alcohol to remove any
oils or debris from the control horns.
Check the t of the control horns to the
aileron and ap. ey should rest ush
against the control surface as shown.
1.
2.
3.
Ailerons control horn
Place low-tack tape 1/32 inch (1mm)
from the control horn slot. is will pre-
vent epoxy from getting on the control
surface when the control horns are glued
in place.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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Remove the control horns from the
control surfaces. Apply epoxy to the slot
in the aileron and ap. Make sure the
epoxy gets into the slot for a good bond
between the surfaces and control horn.
4.
5.
Epoxy
Install the ap control horn using the
same method as same as the aileron con-
trol horns.
Fiberglass control horn
INSTALL FLAP CONTROL HORN
1.
2.
Apply epoxy to the area of the control
horns that st into the slots. Use enough
epoxy so the control horns will be fully
bonded to the ed surfaces.
Before the epoxy fully cures, remove
the tape from around the control horn.
is will allow the epoxy to ow around
the control horn, creating a small let
between the control horn and surface for
a ished look and secure bond.
7.
6.
Epoxy

7
3.
4.
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
INSTALLING THE AILERON SERVOS
1.
2.
Minimum servo spec.
Torque : 80 oz-in (5.8 kg-cm) @ 4.8V;
100 oz-in (7.2 kg-cm) @ 6.0V
Place the servo between the mounting
blocks and space it from the hatch. Use a
pencil to mark the mounting hole loca-
tions on the blocks.
Use drill bit in a pin vise to drill the
mouting holes in the blocks.
Apply 2-3 drops of thin C/A to each of
the mounting holes. Allow the C/A to
cure without using accelerator.
1.5mm
3.
4.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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Use dental oss or heatshrink tube to
secure the connection so they cannot be-
come unplugged.
C/A glue
5.
6.
Secure the servo to the aileron hatch
using Phillips screwdriver and the screws
provided with the servo.
Apply 1-2 drops of thin C/A to each of
the mounting tabs. Allow the C/A to cure
without using accelerator.
Remove the string from the wing at the
servo location and use the tape to attach it
to the servo extension lead. Pull the lead
through the wing and remove the string.
C/A glue
7.
8.
9.
10.
11.
12.

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Set the aileron hatch in place and use a
Phillips screw driver to install it with four
wood screws.
2x10mm
13.
AILERON PUSHROD INSTALLATION
Please see below pictures.
INSTALLING THE FLAP SERVO
Repeat the procedure for the ap servo.
14.
1.
1.
75mm
75mm
M3 clevis M3 lock nut
2.
1.
3.
4.
INSTALLING THE FLAP PUSHROD
Repeat the procedure for the aileron
pushrod.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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WING ASSEMBLY
1.
2.
M3 clevis M3 lock nut
2.
3.
3.
1.
2.
INSTALLING RETRACTABLE
LANDING GEAR
Locate items necessary to install Sprin
Landing Gear.
You use this fork set JP ER-120-90degree.

11
3.
5.
4.
6.
ead locker glue
3x20mm
7.
9.
8.
10.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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11.
12.
13.
14.
15.
16.
17.
18.
3x10mm

13
21.
22.
19.
20.
Secure the servos with the screws pro-
vided with your radio system.
.
INSTALLING THE FUSELAGE SERVOS
.
Because the size of servos dier, you
may need to adjust the size of the precut
opening in the mount. e notch in the
sides of the mount allow the servo lead to
pass through.
Install the rubber grommets and brass
collets into all servos. Test t the servos
into the fuselage servo mounts.
Elevator servo rottle servo
THROTTLE SERVO ARM
INSTALLATION
Install adjustable servo connector in the
servo arm as same as picture below:
1.
1.
Rudder servo

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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2.
Rudder servo arm
INSTALLING THE RECEIVER SWITCH
Install the switch into the precut hole in
the side, in the fuselage.
3/32” Hole
Trim and cut
1.
2.
.
INSTALLING THE ENGINE SWITCH
Switch
Trim and cut
INSTALLING THE STOPPER
ASSEMBLY
Using a modeling knife, carefully cut
o the rear portion of one of the 3 nylon
tubes leaving 1/2” protruding from the
rear of the stopper. is will be the fuel
pick up tube.
Using a modeling knife, cut one length of
silicon fuel line. Connect one end of the
line to the weighted fuel pick up and the
other end to the nylon pick up tube.
Switch
3.
1.
2.
rottle servo arm
Elevator servo arm

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1.
2.
Carefully bend the second nylon tube up at
a 45º angle. is tube is the vent tube.
Test t the stopper assembly into the tank.
It may be necessary to remove some of the
ashing around the tank opening using a
modeling knife. If ashing is present, make
sure none falls into the tank.
3.Vent tube
Fuel ll tube
Fuel pick up tube
With the stopper assembly in place, the
weighted pick-up should rest away from the
rear of the tank and move freely inside the
tank. e top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
FUEL TANK INSTALLATION
When satised with the alignment of the
stopper assembly tighten the 3x20mm ma-
chine screw until the rubber stopper expands
and seals the tank opening. Do not overtight-
en the assembly as this could cause the tank
to split.
1.
2.
3.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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5.
6.
Slide the fuel tank into the fuselage. Guide
the lines from the tank through the hole in
the ewall.
You should mark which tube is the vent
and which is the fuel pickup when you attach
fuel tubing to the tubes in the stopper. Once
the tank is installed inside the fuselage, it may
be dicult to determine which is which.
4.
Connect the lines from the tank to the
engine and muer. e vent line will
connectto the muer and the line from
the clunk tothe carburetor.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should ow
through easily.
MOUNTING THE ENGINE
Please see pictures below
1.
2.
Locate the engine mounting in position on
the rewall. Use a 2.5mm drill bit to drill the
holes necessary to mount your particular
motor choice.
Should be used 35cc engine and propeller
20x8 to 20x12.
2.5mm

17
3.
8.
9.
10.
4.
5.
6.
7.
Position the engine with the drive washer
(160mm) forward of the rewall.
160mm
5.1mm
M5x100mm

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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17.
12.
13.
14.
15.
16.
Attach the muer to the engine using
the hardware included with the muer.
Use medium CA to glue the pushrod
stando to the inside of the fuselage and
the pushrod tube.
Reinstall the servo horn by sliding the
connector over the pushrod wire. Cent-
er the throttle stick and trim and install
the servo horn perpendiular to the servo
center line.
11.
Ignition Module

19
COWLING
Please see below pictures.
1.
2.
3.
18.
Tape the cowl to the fuselage using low-
tack tape.
4.
5.
6.

RENO AIR CARE YAK-11 “PERESTROIKA” Instruction Manual.
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Use a drill and drill bit to drill the holes
for the cowl mounting screws. Make sure
the cowl position is correct before drill-
ing each hole.
With the muer, needle valve, and
spark/ glow plug removed from the en-
gine, slide the cowl in place over the en-
gine. Temporarily install the propeller
and spinner in order to d the exact loca-
tion of the cowl. When satised with the
cowl placement, secure the cowl to the
fuselage using masking tape.
Install the muer and muer extension
onto the engine and make the cutout in
the cowl for muer clearance. Connect
the fuel and pressure lines to the carbu-
retor, muer and fuel ler valve. Secure
the cowl to fuselage using the M3x10mm
socket head screws. Putting a small length
of silicon fuel tube under the head of the
screw helps with vibration.
8.
9.
7.
Because of the size of the cowl, it may be nec-
essary to use a needle valve extension for the
high speed needle valve. Make this out of suf-
cient length 1.5mm wire and install it into
the end of the needle valve. Secure the wire in
place by tightening the set screw in the side of
the needle valve.
M3x10mm
10.
11.