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YAK 54.

Instruction Manual.

INTRODUCTION.

Thank you for choosing the

YAK 54

ARTF

by SG MODELS . The

YAK 54

was designed with

the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is easy 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 that most of the

work has been done for you already.Flying the

YAK 54

is simply a joy.

This instruction manual is designed to help you build a great flying aeroplane. Please read this

manual thoroughly before starting assembly of your

YAK 54

. 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.

If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C

supplier and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training

procedures designed to help the new pilot on his way to successful R/C flight. They will also be able

to advise on any insurance and safety regulations that may apply.

ADDITIONAL ITEMS REQUIRED.

.91-1.25 2-4 stroke engine.

20cc gasoline engine.

Computer radio with six digital

servos.

Glow plug to suit engine.

Propeller to suit engine.

Protective foam rubber for radio

system.

Silicone fuel line.

TOOLS & SUPPLIES NEEDED.

Thick 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.

Thread-lock.

Paper towels.

PARTS LISTING.

FUSELAGE ASSEMBLY

(1) Fuselage.

(1) Canopy hatch.

WING ASSEMBLY

(1) Right wing half/ aileron.

(1) Left wing half/ aileron.

(1) Aluminium dihedral brace.

Tail section assembly

(1) Horizontal stabilizer/ elevator

halves.

(1) Rudder halves.

Some more parts.

HARDWARE PACK

COWLING

Landing gear.....

Содержание SEA53B

Страница 1: ... Weight 8 4 9 9lbs 3 8 4 5kg Length 61 4 in 156cm Recommended engine size 91 1 25 cu in 2 4stroke 20cc gasoline engine Radio System required 6 channel with 6 digital servos Flying skill levelIntermediate advanced MS 53 Graphics and Specifications may change without notice A S S E M B L Y M A N U A L A S S E M B L Y M A N U A L A S S E M B L Y M A N U A L A S S E M B L Y M A N U A L A S S E M B L Y...

Страница 2: ...c R C flight we strongly recommend you contact your R C supplier and join your local R C Model Flying Club R C Model Flying Clubs offer a variety of training procedures designed to help the new pilot on his way to successful R C flight They will also be able to advise on any insurance and safety regulations that may apply ADDITIONAL ITEMS REQUIRED 91 1 25 2 4 stroke engine 20cc gasoline engine Com...

Страница 3: ... 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 5 Turn the wing panel over and deflect the aileron in the opposite direction from the opposite side Apply thin C A ...

Страница 4: ...y Installing the turnbuckle for tail strut of hori zontal fin as same as pictures below 8 After both ailerons are securely hinged 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...

Страница 5: ...ntrol horn using the same method as with the aileron control horns Rudder control horn Using the same techniques used aileron control horn See picture below 16mm Epoxy RUDDER CONTROL HORN Horizontal Stabilizer 2 sets 3x40mm Aluminum Washer CONTROL HORN M3 Epoxy Aluminum Washer Aileron Wing bottom M3 LOCK NUT Elevator control horn 3 x 60mm ...

Страница 6: ... the line to the weighted fuel pick up and the other end to the nylon pick up tube 3 Carefully bend the second nylon tube up at a 45º angle This tube is the vent tube INSTALLING THE STOPPER ASSEMBLY ENGINE MOUNT See pictures below Mark and drill 4 holes for engine mount 4x30mm Thread locker glue Diameter 5 5mm Rudder control horn Fuselage Fuselage Aluminum Washer CONTROL HORN M3 M3 LOCK NUT Alumin...

Страница 7: ...topper assembly in place the weighted pick up should rest away from the rear of the tank and move freely inside the 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 3mm x 20mm machine screw until the rubber stopper ex pands and seals the tank opening Do not overti...

Страница 8: ...G GEAR wheel Pant wheel M3 wheel collar nut Axle Washer Landing Gear wheel Pant wheel collar wheel Axle Washer Lite Plywood block Lite Plywood block 2 Follow diagram below for wheel pant installation 14mm 7mm C A glue Blow through one of the lines to ensure the fuel lines have not become kinked inside the fuel tank compartment Air should flow through easily Fuel pick up tube Fuel fill tube Vent tu...

Страница 9: ...before proceeding 140mm Machine Screw 4x30mm Engine 2 stroke Engine 4 stroke 1 Place your engine onto the engine mount Adjust the engine is centered of the edges of the engine case 2 When you are satisfied with the align ment mark the locations of the engine mounting MOUNTING THE ENGINE 2 Using the hardware provided mount the main landing gear to the fuselage M6 X 20mm Pushrod wire Pushrod wire Ma...

Страница 10: ...YAK 54 Instruction Manual 10 Trim and cut 1 5mm wire needle valve Trim and cut Mark point Machine Screw 3x10mm 1mm drill bit Paper tape guide COWLING Mark point Paper tape guide ...

Страница 11: ... servo Test fit the servo into the elevator servo mount Because the size of servos differ you may need to adjust the size of the precut open ing in the mount The notch in the sides of the mount allow the servo lead to pass through ELEVATOR SERVO INSTALLATION 3 Secure the servos with the screws pro vided with your radio system Left side Remove covering INSTALLING THE SWITCH Install the switch into ...

Страница 12: ...Remove covering Pen When cutting through the covering to remove it cut with only enough pressure to only cut through the covering itself Cutting into the balsa structure may weaken it Switch HORIZONTALSTABILIZER Center line Switch Remove covering Covered wood filler piece ...

Страница 13: ...through the covering to re move it cut with only enough pressure to only cut through the covering itself Cutting into the balsa structure may weaken it C A glue Remove covering INSTALLING THE AILERON SERVOS Servos Small weight Thread Rudder control horn Hinge Epoxy ...

Страница 14: ...ervo lead and carefully thread it though the wing String Small Weight Wing Wing rib String Small Weight Aileron Wing Wing Aileron AILERON PUSHROD HORN INSTALLATION Wing Aileron M3 lock nut M3 clevis 65mm 92mm String Small weight Electric wire Aileron Servo ...

Страница 15: ...nut Install servos arm to servos Notice the posi tion of the servo arms on the servos See picture below See pictures below M3 lock nut Cable wire RUDDER PULL PULL CABLE SYSTEM ELEVATOR PUSHROD INSTALLATION Elevator pushrods assembly follow pictures below M3 lock nut M3clevis 120mm 142mm Rudder servo Pull Pull cable system ...

Страница 16: ...um trap Fuselage bottom Bottom 1 2 2 M3x10cm 2pcs Alumium trap Bottom 70mm 180mm 7mm Snap keeper INSTALLING TAIL STRUT SUPPORT The tail strut system assembly follow pic tures below Horizontal Fin Vertical Fin Rudder pushrod Elevator pushrod Rudder Throttle ...

Страница 17: ...17 2 2 1 1 Horizontal Fin Vertical Fin M3x25mm MOUNTING THE TAIL WHEEL See picture below M3x30mm M3x25 mm M3x30 mm Tail landing gear Spring 1 2 M3x30 mm ...

Страница 18: ...na wire Tie wrap Receiver ATTACHMENT WING FUSELAGE Attach the aluminium tube into fuselage Throttle Wing tube Because the size of servos differ you may need to adjust the size of the precut opening in the mount The notch in the sides of the mount allow the servo lead to pass through 2 Install the rubber grommets and brass collets onto the throttle servo Test fit the servo into the throttle servo m...

Страница 19: ...ward orif this is not possible stick weight onto the firewall When balanced correctly the air plane should sit level or slightly nose down when you lift it up with your fingers M4 x 15mm 1 It is critical that your airplane be bal anced correctly Improper balance will cause your plane to lose control and crash The cen ter of gravity is locate 7 8cm back from the leading edge of the wing measured at...

Страница 20: ...direction and not bind in any way B Plug in your radio system per the manufacturer s instructions and turn every thing on D Check the rudder Looking from be hind the airplane move the rudder stick to the right The rudder should move to the right If it does not flip the servo reversing switch on your transmitter to change the direction C Check the elevator first Pull back on the elevator stick The ...

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