Seagull Models Ryan Navion User manual

MadeinVietnam.
RYANNAVION
ASSEMBLY MANUAL
Kit features.
• Ready-made—minimalassembly&finishingrequired.
• Ready-covered—includingdecals,trim&covering.
• Photo-illustrated step-by-step AssemblyManual.
MS:106
“Graphics and specifications may change without notice”.
Specifications:
Wingspan----------------------------------------------63in----------------------------------------160cm.
Wingarea---------------------------------------------768.8sq.in--------------------------49.6sq.dm.
Approximateflyingweight------------------------7.9-8.8lbs--------------------------------3.6-4.0kg.
Length------------------------------------------------- 54.8in-----------------------------------139.2cm.
Recommendedenginesize----------------------0.75-0.91cu.in----------------------------2-stroke.
.91-1.00 cu.in ---------------------------4-stroke.
ELECTRIC CONVERSION : OPTIONAL.
RecommendedR/C--------------------------------------------6channelswith8servos.
Flyingskilllevel-----------------------------------------------------Advanced/Intermediate.

RYAN NAVION Instruction Manual.
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INTRODUCTION.
ThankyouforchoosingtheRYANNAVIONARTFbySEAGULLMODELS.TheRYANNAVION was
designedwiththeintermediate/advancedsportflyerinmind.Itisa semiscaleairplane whichiseasy
to fly and quick to assemble. The 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 find
thatmostoftheworkhasbeendoneforyoualready.Themotormounthasbeenfittedandthehinges
are pre-installed . Flying the RYAN NAVION is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour RYANNAVION. Use the parts listing below to
identify all parts.
WARNING.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is
capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & RESPONSIBILITY.
IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
proceduresdesignedtohelpthenewpilotonhiswaytosuccessfulR/Cflight.Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED.
0.75-.91 2-stroke.
.91-1.00 4-stroke.
Computer radio with 8 servos.
Glow plug to suit engine.
Propeller to suit engine.
Protective foam rubber for radio
system.
Siliconefuel line.
TOOLS & SUPPLIES NEEDED.
Thick cyanoacrylate glue.
30 minute epoxy.
5 minute epoxy.
Hand or electric drill.
Assorted drill bits.
Modellingknife.
Straight edge ruler.
2mm ball driver.
Phillips head screwdriver.
220 grit sandpaper.
90° square or builder’s triangle.
Wire cutters.
Masking tape & T-pins.
Thread-lock.
Paper towels.
PARTS LISTING.
FUSELAGE ASSEMBLY
(1) Fuselage.
(1) Canopy.
WING ASSEMBLY
(1) Right wing half/ aileron.
(1) Left wing half/ aileron.
Tail section assembly
 (1) Horizontal stabilizer/ elevator
halves.
(1) Rudder halves.
Some more parts.
HARDWAREPACK
COWLING
Landing gear.....

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NOTE: To avoid scratching your new aero-
planewesuggestthatyoucoveryour
workbench with an old towel. Keep a
couple of jars or bowls handy to hold
the small parts after you open the
bags.
Pleasetrialfitallparts.Makesureyou
have the correct parts and that they
fit and are aligned properly before
gluing! This will ensure proper as-
sembly as the RYAN NAVION is
made from natural materials and
minor adjustments may have to be
made. The paint and plastic parts
used in this kit are fuel proof. How-
ever, they are not tolerant of many
harshchemicalsincludingthefollow-
ing:paintthinner,cyano-acrylateglue
accelerator, cyanoacrylate glue de-
bonderandacetone.Donotletthese
chemicals come in contact with the
coloursonthe coveringandtheplas-
tic parts.
The control surfaces, including the
ailerons, 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 using a high-quality
thin C/A glue.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2)Removeeach hinge fromthewingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pinis snugagainst the aileron.This
will help ensure an equal amount of hinge is
oneithersideofthehingelinewhentheaileron
is mounted to the wing panel.
HINGING THE AILERONS - FLAP.
Note:
Hinge.
3) Slide the aileron on the wing panel until
there is only a slight gap. The 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
shouldbe maintained betweenthe wing panel
andaileron.
4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurfaceshould lightly contactthe
wing during this procedure. Ideally, when the
Thehingeisconstructedofaspecial
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.
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.
Note:
T-pin.
Hinge.
C/Aglue.
Hinge.

RYAN NAVION Instruction Manual.
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HINGING THE RUDDER.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
8)Afterbothailerons are securelyhinged,
firmly grasp the wing panel and aileron to
make sure the hinges are securely glued and
cannot be pulled out. Do this by carefully
applying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
6) Using C/A remover/debonder and a
papertowel, remove anyexcess C/A gluethat
may have accumulated on the wing or in the
aileronhinge area.
5)Turnthe wingpanelover anddeflect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,makingsurethat the C/A penetrates into
both the aileron and wing panel. Hinge.
Workthe aileron up and down several
times to “work in” the hinges and
check for proper movement.
Note:
HINGING THE ELEVATORS.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
INSTALLATION PLASTIC WING EDGE.
Removecovering.
Fillepoxy.

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Aileron control horn: See pictures below.
AILERON CONTROL HORN
2 sets.
3x40mm.
Install the wing edge to the wing.
ALUMINUMWASHER.
ALUMINUMWASHER.
CONTROLHORN
M3 SCREW.
18mm.
Epoxy.
Wing
Wing
Epoxy.
M3LOCKNUT.
Aileron control horn .
Maskingtape.

RYAN NAVION Instruction Manual.
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Install the flap control horn using the same
method as with the aileron control horns.
FLAP CONTROL HORN.
Flap control horn .
AluminumWasher.
CONTROLHORN
M3 SCREW.
M3LOCKNUT.
Epoxy.
AluminumWasher.
Flap.
CONTROLHORNM3SCREW.
M3 lock nut.
AluminumWasher. 18mm.
AluminumWasher.
Epoxy.
Flap.
2 sets.
3x40mm.
Install the elevator control horn using the
same method as with the aileron control
horns.
ELEVATOR CONTROL HORN.
2 sets.
3x40mm.
Elevatorcontrolhorn.
18mm.
Epoxy.
Horizontal
Stabilizer. Elevator.
AluminumWasher.
CONTROLHORN M3
M3LOCKNUT.
Epoxy.
AluminumWasher.
Horizontal
Stabilizer. Elevator.
Wing.
Epoxy.
Wing.

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Rudder control horn:
Using the same techniques used aileron
control horn. See picture below.
RUDDER CONTROL HORN.
1 sets.
Fuselage.
18mm.
Epoxy.
Rudder.
Rudder.
Aluminum Washer.
CONTROLHORN
M3 SCREW.
Aluminum Washer.
Fuselage.
Rudder control horn.
3x40mm.
Mark and drill 4 holes for engine mount.
Insert 4 blind nuts to firewall.
See pictures below.Make yourself the
template of your engine on paper.
ENGINE MOUNT INSTALLATION.
4x30mm.
5.5mm.
Thread locker glue.
Epoxy.
M3LOCKNUT.

RYAN NAVION Instruction Manual.
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5) With the stopper assembly in place,
the weighted pick-up should rest away from
therear of the tank and move freely insidethe
tank. The top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
6) When satisfied with the alignment of
the stopper assembly tighten the 3 x 20mm
machine screw until the rubber stopper ex-
pands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
4) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using a
modeling knife. If flashing is present, make
sure none falls into the tank.
1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
INSTALLING THE STOPPER ASSEMBLY.
2) Usinga modeling knife, cut onelength
ofsiliconfuel line. Connectoneend of theline
tothe weighted fuel pick up andthe otherend
to the nylon pick up tube.
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
Vent tube. Fuel pick up tube.
Fuel fill tube.
INSTALLING THE BATTERY.
Battery.

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 2) Place your engine onto the engine
mount. Adjust the engine is centered of the
edges of the engine case.
 3) When you are satisfied with the align-
ment, mark the locations of the engine
mounting.
135mm.
MOUNTING THE ENGINE.
 1) Install the pushrod housing through the
predrilledholein the firewallandinto the servo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Make a Z-Bend 1/4" from one end of the plain
wire pushrod.
FUEL TANK INSTALLATION.
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
thetank isinstalled inside the fuselage, itmay
be difficult to determine which is which.
Fueltank.
C/Aglue.
4.2mm diameter.
 4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
 6) Attach the Z-Bend in the pushrod wire
to the throttle arm on the carburetor.
 5) Bolt the engine to the engine mount
using the four machine screws. Double
cheek that all the screws are tight before
proceeding.
Blow through one of the lines to en-
sure the fuel lines have not become kinked
inside the fuel tank compartment. Air
should flow through easily.
venttube.
Fuelpick-up tube. Fuelfill tube.
Pushrodwire.
MachineScrew 4x30mm.
Trim and cut.

RYAN NAVION Instruction Manual.
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 3) Install themuffler andmuffler extension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve. Secure the cowl to fuse-
lage using the 3x10mm screws.
Electric Conversion (Ep Power)
(OPTION).
Trim and cut.
Machine Screw M3x10mm.
1) Slide the fiberglass cowl over the
engine and line up the back edge of the cowl .
COWLING.
4 pcs.
Install the pushrod wire as shown.
M2clevis.
PARTSREQUIRED
NOSE GEAR INSTALLATION.
Trim and cut.

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Epoxy.
Balsa block.
Epoxy.
M3 x 15mm.
M3 x 15mm.
Battery.
Speed control.
Electric motor.
135mm.
4mm.

RYAN NAVION Instruction Manual.
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INSTALLING THE SWITCH.
3/32” Hole.
THROTTLE SERVO ARM INSTALLATION.
Install adjustableservoconnectorinthe servo
arm .
AdjustableServo
connector.
Servoarm.
Loctite secure.
1PCS.
INSTALLING THE FUSELAGE SERVOS.
Servo tray.
Throttle servo. Trim and cut.
Elevator servo.
Rudder servo.
INSTALLING THE SPINNER.

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Servos. Smallweight.
Thread.
String.
Small weight.
Electric wire.
INSTALLING THE AILERON - FLAP SERVOS.
Flap servo.
AileronServo.
Switch.
AILERONPUSHROD HORN INSTALLATION
Wing.
Aileron.
Attach the string to the servo lead and carefully thread it though the wing.
M2x12mm. ServosElevator.
Flap.

RYAN NAVION Instruction Manual.
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PUSHROD FLAP INSTALLATION.
M2lock nut.
Repeat the procedure for the other wing.
Wing.
Flap.
Wing.
Aileron.
M2lock
1.8mmx90mm.
8mm.
8mm.
1.8mmx90mm.
Snapkeeper.
Cut.
AILERONPUSHROD HORN INSTALLATION
90mm.
AILERONPUSHROD HORN INSTALLATION
90mm.
8mm.
Cut. 8mm Snapkeeper.
Snapkeeper.
Servoarm.

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MAIN LANDING GEAR
INSTALLATION.
INSTALLING THE MAIN GEAR WIRES.
M3x15mm.
2.
3.
4.
5.
1.
1.
2. 3.
4.
5.
Wheel.
Wheel collar.

RYAN NAVION Instruction Manual.
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INSTALLING VERITICAL FIN.
Hinge.
Epoxy.
Trimand cut.
Fill epoxy.
Draw center line.
INSTALLING THEHORIZONTALSTABILIZER.
Hinge.
Whencutting through thecovering to re-
move it, cut with only enough pressure
toonly cut through the covering itself. Cutting
into the balsa structure may weaken it.
Hinge.
Cut.
Pen.
Epoxy.

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Cut.
Fill epoxy.
ELEVATOR - RUDDER PUSHROD HORN
INSTALLATION.
Elevator control horn.
Rudder Control horn.
Rudder pushrod.
Hinge.
Metalclevis. Elevator Pushrod.
M2lock nut.
Control horn.
C/Aglue.
Elevator control horn.

RYAN NAVION Instruction Manual.
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Tighten the antenna.
INSTALLING THE BATTERY-RECEIVER.
Receiver.
Rudder.
Elevator.
 1) Elevator and rudder pushrods assembly follow pictures below.
Elevator. Rudder.
Throttle.
 2) Install servos arm to servos. Notice the
position of the servo arms on the servos. See
picture below.
8mm. M2 lock nut . M2clevis.

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BALANCING.
1) It is critical that your airplane be bal-
anced correctly. Improper balance will cause
yourplaneto lose controland crash. The cen-
ter of gravity is located 10.5cm back from the
leading edge of the wing, measured at the
wing tip.
ATTACHMENT WING-FUSELAGE.
INSTALLATION PILOT.
30mm.110mm.
1.
3. 2.
3.
2.
1.
Wing bolt.
C/Aglue.

RYAN NAVION Instruction Manual.
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7) Check the receiver antenna. It should
be fully extended and not coiled up inside the
fuselage.
5) If your radio transmitter is equipped
withdual rate switchesdouble checkthat they
are on the low rate setting for your first few
flights.
6) Check to ensure the control surfaces
are moving the proper amount for both low
and high rate settings.
8) Properly balance the propeller. Anout
of balance propeller will cause excessive vi-
bration which could lead to engine and/or air-
frame failure.
We wish you many safe and enjoyable
flights with your RYAN NAVION.
4) Check the control surfaces. All should
move in the correct direction and not bind in
any way.
3) Double check the balance of the air-
plane. Do this with the fuel tank empty.
2) Check every bolt and every glue joint
in the RYAN NAVION to ensure that
everything is tight and well bonded.
1) Completely charge your transmitter
and receiver batteries before your first day of
flying.
PREFLIGHT CHECK.
D) Check the throttle. Moving the throttle
stick forward should open the carburetor bar-
rel. Ifitdoesnot,fliptheservoreversingswitch
on your transmitter to change the direction.
C) Check the rudder. Looking from be-
hindthe airplane, move the rudder stick tothe
right. Theruddershould move tothe right. If it
does not, flip the servo reversing switch on
your transmitter to change the direction.
E) From behind the airplane, look at the
ailerononthe right wing half. Movetheaileron
sticktotheright. Therightaileronshouldmove
upand the otheraileronshould movedown. If
it does not, flip the servo reversing switch on
your transmitter to change the direction.
B) Check the elevator first. Pull back on
theelevator stick. The elevator halves should
move up. If it they do not, flip the servo re-
versing switch on your transmitter to change
the direction.
Check the operation and direction of the
elevator, rudder, ailerons and throttle.
FLIGHT PREPARATION.
A) Plug in your radio system per the
manufacturer's instructions and turn every-
thingon.
10.5cm.
CONTROL THROWS.
Ailerons: 12 Low rate 15 High rate
Elevator: 10 Low rate 12 High rate
Rudder: 15 Low rate 20 High rate
2) If the nose of the plane falls, the plane
is nose heavy. To correct this first move the
battery pack further back in the fuselage. If
this is not possible or does not correct it, stick
small amounts of lead weight on the fuselage
sides under the horizontal stabilizer. If the tail
of the plane falls, the plane is tail heavy.
Tocorrect this, movethe battery andreceiver
forward orif this is not possible, stick weight
ontothefirewalloruseabrassheavyhubspin-
nerhub. Whenbalanced correctly, theairplane
shouldsitlevelorslightly nose down whenyou
lift it up with your fingers.