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YAK 55 - 

ITEM CODE:BH111.

                                                        

Instruction Manual

Caution:

 this model is not a toy!

If you are a beginner to this type of powered
model, please ask an experienced model flyer
for help and support. If you attempt to operate
the model without knowing what you are doing
you could easily injure yourself or somebody
else. Please keep your safety and well-being
in mind at all times.

Important:

 

before you start construction

Even if you have already built a large number
of RC models please read right through these
instructions and check all the kit components
against the parts list. We have taken great
trouble to keep construction as simple as
possible, without making any compromises
in the area of safety.

Note regarding the film covering

Minor creases or bubbles may develop in the
film covering due to major fluctuations in
weather conditions (temperature, humidity
etc.); in rare cases you may even find a slight
warp in a component. These minor faults are
in the nature of film-covered built-up wooden
structures, and can easily be corrected using
a heat gun, as commonly used for modelling.
Creases:

Blow warm air over the area
and rub down with a soft
cloth.

Wing warp:

Hold the panel twisted
gently in the opposite
direction to the warp, and
apply warm air to remove
the creases from the
covering.

       

 SAFETY PRECAUTION.

Caution! do not heat the film more than is
absolutely necessary. If the air or the iron is
too hot, the film may melt and holes may be
formed.
This model is highly pre-fabricated and can
be built in a very short time. However, the work
which you have to carry out is important and
must be done carefully. The model will only
be strong and fly well if you complete your
tasks competently - so please work slowly and
accurately.

When self-tapping screws have to be
screwed into wood, apply a little white glue
to prevent them shaking loose: just squirt
white glue into the hole and fit the screw.

 

REPLACEMENT LARGE PARTS

 + This is not a toy
 + Be sure that no other flyers are using your
radio frequency.
 +The glow plug clip must be securely attached
to the glow plug.
 + Do not flip the propeller with your fingers.
 + Keep loose clothing and wires away from
the propeller.
 + Do not start the motor if people are near.
Do not stand in line with the side of the propel-
ler.

G.  Decal sheet.

 E. Rudder.

F. Aluminium wing dihedral brace.

G.

B.

C.

D.

D.

B.

F.

A.

E.

F.

A. Cowling.

B. Wing panel(Left&Right).

C. Fuselage.

D . Horizontal stabilizer.

Summary of Contents for BH111

Page 1: ...ATION Wingspan 1 810 mm 71 26 in Length 1 600 mm 62 99 in Weight 4 6kg 10 12 lbs Radio 6 channels Servo 06 standard high torque servos Engine 30 cc gas Made in Vietnam Instruction Manual book ITEM COD...

Page 2: ...pins Thread lock Paper towels Some more parts HARDWAREPACK COWLING Landing gear To avoid scratching your new airplane do not unwrap the pieces until they are needed for assembly Cover your workbench w...

Page 3: ...m air over the area and rub down with a soft cloth Wing warp Hold the panel twisted gently in the opposite direction to the warp and apply warm air to remove the creases from the covering SAFETY PRECA...

Page 4: ...3 Using the thread as a guide and using masking tape tape the servo lead to the end of the thread carefully pull the thread out When you have pulled the servo lead out re move the masking tape and the...

Page 5: ...cture below 5 Instal servo tray with aileron servo into the wing as same as picture below INSTALLING THE AILERON CONTROL HORN Secure A B Epoxy PLUS glue Aileron Control horn Installing the aileron lin...

Page 6: ...11 Instruction Manual See pictures below Repeat the procedure for the other wing half Bottom side Aileron Secure See pictures below INSTALLING THE ENGINE MOUNT INSTALLING THE ENGINE Drill a hole 4mm d...

Page 7: ...g flight 1 Install one adjustable metal connector through the third hole out from the center of one servo arm enlarge the hole in the servo arm using a 2mm drill bit to accommodate the servo connector...

Page 8: ...ITEM CODE BH111 Instruction Manual PARTS REQUIRED 1 Assemble and mounting the wheel pants as shown in the following pictures MAIN GEAR INSTALATION Left side Secure 1 1 2 Secure Secure L a n d i n g ge...

Page 9: ...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 of it falls into the tank Bottom side 6 When satisfied...

Page 10: ...l tank compartment 1 Slide the fiberglass cowl over the en gine and line up the back edge of the cowl with the marks you made on the fuselage 2 While keeping the back edge of the cowl flush with the m...

Page 11: ...11 YAK 55 ITEM CODE BH111 Instruction Manual Mark point 65 mm Mark point 65 mm Drill a hole 2 5mm diameter Left side Top side 3x 12mm Secure Drill a hole 2 5mm diameter Secure...

Page 12: ...eld in place using two 3mm x 8mm machine screws Front view Machine screw Secure INSTALLING THE SPINNER Secure Elevator control horn install as same as the way of aileron control horn Please see pic tu...

Page 13: ...meter 1 Install the rubber grommets and brass collets into the elevator servo Test fit the servo into the servo tray 2 Mount the servo to the tray using the mounting screws provided with your radio sy...

Page 14: ...14 YAK 55 ITEM CODE BH111 Instruction Manual Secure Left side Right side 9 mm 247 mm Drill a hole 1 5mm diameter...

Page 15: ...f aileron pushrod ELEVATOR PUSHROD INSTALLATION Secure Elevator pushrod Elevator pushrod Bottom side Rudder servo install as same as method of elevator servo See picture below Rudder servo RUDDER SERV...

Page 16: ...horn install as same as the way of aileron control horn Please see pic tures below Control horn of Rudder RUDDER CONTROL HORN AND RUDDER CABLE INSTALLATION A B Epoxy PLUS glue A B Epoxy PLUS Glue Cut...

Page 17: ...55 ITEM CODE BH111 Instruction Manual Bottom side Rudder cable Elevator pushrod MOUNTING THE TAIL WHEEL BRACKET 3x12mm 3x15mm Drill a hole 2 5mm Secure Secure Bottom side Mark point Rudder push pull...

Page 18: ...vo lead easier when you are installing the wing Plug the battery pack lead into the switch 2 Wrap the receiver and battery pack in the protective foam to protect them from vi bration Use a rubber band...

Page 19: ...luminium tube dihedral brace into each wing haft The brace should slide in easily If not use 220 grit sand around the edges and ends of the brace until it fits prop erly Left wing Right wing Secure E...

Page 20: ...lease start at the location we recommend 3 Turn the airplane upside down Place your fingers on the masking tape and care fully lift the plane 1 It is critical that your airplane be bal anced correctly...

Page 21: ...down Rudder 35 mm right 35mm left 1 Completely charge your transmitter and receiver batteries before your first day of fly ing 2 Check every bolt and every glue joint in your plane to ensure that ever...

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