Seagull Models Boomerang 40 Assembly Manual Download Page 1 | Manualshive

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Seagull Models Boomerang 40 Assembly Manual Download Page 1

Specifications

Wing span ____________________________  155cm.
Wing area _________________________ 3950 sq cm .
Approximate flying weight _______________  2.6-2.8kg.
Recommended  engine  size 0.40-0.46 cu. ins 2-stroke.
Recommended R/C __________ 4 channels minimum.
Flying skill level ___________________ Sports  Trainer.
Electric conversion: optional

Kit features.

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Ready-made—minimal assembly & finishing required.

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Ready-covered—including decals, trim & covering.

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Factory-installed pushrod.

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Factory-pinned & glued control surface hinges for ultimate safety.

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Comprehensive hardware pack including wheels, tank, spats,undercarriage& spinner.

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Photo-illustrated step-by-step Assembly Manual.

Hand-made Almost Ready to Fly R/C Model Aircraft

ASSEMBLY MANUAL

Additional items required.

Engine.
4 Channels or greater Radio Control system.
Glues.
Tools.
Starting Equipment.

Made in Vietnam.

SPORTS TRAINER - ENGINE SIZE.40 - .46 - 2STROKE

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Summary of Contents for Boomerang 40

Page 1: ...Kit features Ready made minimal assembly finishing required Ready covered includingdecals trim covering Factory installedpushrod Factory pinned glued control surface hinges for ultimate safety Comprehensivehardwarepackincludingwheels tank spats undercarriage spinner Photo illustratedstep by stepAssemblyManual Hand made Almost Ready to Fly R C Model Aircraft ASSEMBLY MANUAL Additional items require...

Page 2: ...mend 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 40 46 2 stroke engine 4 channels radio with four servos Glow plug to suit engine...

Page 3: ...s 2 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 This will help ensure an equal amount of hinge is on either side of the hinge line when the aileron is mounted to the aileron The control surfaces including the ailerons elevators and rudder are prehinged with hinges...

Page 4: ...site side Apply thin C A glue to each hinge making sure that the C A penetrates into both the aileron and wing panel Work the aileron up and down several times to work in the hinges and check for proper movement Note 4 Deflect the aileron and completely saturate each hinge with thin C A glue The ailerons front surface should lightly contact the wing during this procedure Ideally when the hinges ar...

Page 5: ...wo wing halves together and firmly press them together allowing the excess epoxy to run out There should not be any gap in the wing halves Use rubbing alcohol and a paper tower to clean up any excess epoxy Apply masking tape at the wing join to hold the wing halves together securely HINGING THE RUDDER Glue the rudder hinges in place using the same techniques used to hinge the ailerons Epoxy attach...

Page 6: ...round it using a pen 4 Remove the mount and using a mod eling knife carefully remove the covering from inside the outline you drew 5 Using 6 Minute Epoxy glue the servo mount into place Remove any excess epoxy using a paper towel and rubbing alcohol Use pieces of masking tape to hold the tray in place until the epoxy fully cures INSTALLING THE AILERON SERVO MOUNT 8 Peel off the backing from the se...

Page 7: ...o arm onto the servo The arm should be installed so it is parallel with the trailing edge of the wing Pushrod wire 4 Slide the pushrod wires following pic ture above 5 With both the aileron servo and the ai lerons centered Tighten the set screws on the connectors Wire keeper INSTALLING THE AILERON LINKAGE 1 Using a modeling knife remove the covering from over the two main gear mount ing slots loca...

Page 8: ... 4mm washers to attach the engine mount rails to the firewall Tighten the screws Make sure to use threadlock on the screws to help prevent them from vibrating loose 2mm 3mm X 12mm 5 Remove the two straps and the gear wire Drill four 3 32 pilot holes into the fuse lage for the wood screws Plastic trap Pen 4 Insert the main gear wire into the mounting slot INSTALLING THE NOSE GEAR WHEEL ...

Page 9: ...ent tube A B When the stopper assembly is installed in the tank the top of the vent tube should rest just below the top surface of the tank It should not touch the top of the tank 5 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 6 With the stopper...

Page 10: ...e notch in the sides of the mount allow the servo lead to pass through Fuel tank INSTALLING THE FUEL TANK Fuel tank C A glue Fuel pickup tube Top of tank Vent tube Fuel fill tube 2 Use balsa plywood to help prevent moveable from transferring to the fuel tank as shown 1 Slide the fuel tank into the fuselage Guide the lines from the tank through the hole in the firewall You should mark which tube is...

Page 11: ... Install the switch into the precut hole in the side in the fuselage Switch MOUNTING THE ENGINE PARTS REQUIRED 1 Install the pushrod housing through the predrilled hole in the firewall and into 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 110mm 2 Place your engine onto the engine mount Adju...

Page 12: ...re tight before proceeding 6 Attach the Z Bend in the pushrod wire to the throttle arm on the carburetor You will need to remove the throttle arm from the car buretor to be able to attach the Z bend When complete reattach the throttle arm to the car buretor Pushrod wire 1 5mm 4 Remove the engine Using an drill bit drill the mounting holes through the engine mount at the four locations marked ...

Page 13: ...items neccessary to install the electric power conversion included with your model Model size 35 45 size models Motor 35mm 830 rev per volt Propeller 10x7 ESC 50A Lipo Batteries 4cell 3200mA M4x70mm 2 Attach the electric motor box to the firewall suitable with the cross lines drawn on the electric motor box and firewall Using epoxy and balsa stick to secure the motor box to the firewall Please see...

Page 14: ...ne The spinner cone is held in place using two 3mm x 12mm wood screws The propeller should not touch any part of the spinner cone If it does use a sharp modeling knife and carefully trim away the spinner cone where the propeller comes in contact with it INSTALLING THE SPINNER M4x70mm Blind nut Blind nut M3x15mm ...

Page 15: ...e move the covering from over the vertical sta bilizer mounting slot in the top of the fuselage 5 Remove the stabilizer Using the lines you just drew as a guide carefully remove the covering from between them using a model ing knife 6 Using a modeling knife carefully re move the covering that overlaps the stabilizer mounting platform sides in the fuselage Re move the covering from both the top and...

Page 16: ...the fuselage The bottom edge of the stabilizer should also be firmly pushed against the top of the horizontal stabilizer VERTICAL STABILIZER INSTALLATION 7 When you are sure that everything is aligned correctly mix up a generous amount of 30 Minute Epoxy Apply a thin layer to the top and bottom of the stabilizer mounting area and to the stabilizer mounting platform sides in the fuselage Slide the ...

Page 17: ...d to the lower hinge also Set the stabilizer in place and realign Double check all of your measure ments once more before the epoxy cures Hold the stabilizer in place with T pins or masking tape and remove any excess epoxy using a paper towel and rubbing alcohol Allow the ep oxy to fully cure before proceeding 90º Vertical Stabilizer Horizontal Stabilizer 4 Install the rudder control horn using th...

Page 18: ...CEIVERAND BATTERY 1 Plug the five servo leads and the switch lead into the receiver Plug the battery pack lead into the switch also 3 Route the antenna in the antenna tube inside the fuselage and secure it to the bottom of fuselage using a plastic tape 2 Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration ...

Page 19: ...eiver Battery Wing bolt TAIL DRAGGER CONVERSION M3x12mm 1 Test fit the fin and the tail gear to make sure that everything fits properly When you are happy with the fit glue the fin permanently in place 2 See below picture how to assembly the tail Dragger Conversion ...

Page 20: ... of the fuselage 2 Using the two landing gear straps as a guide mark the locations of the four 3mm x 12mm mounting screws onto the fuselage sur face Remove covering INSTALLING THE MAIN GEAR WIRES 3 The landing gear wire is held in place using two nylon landing gear straps and four 3mm x 12mm wood screws The straps should be located equal distance from the inside and outside ends of the wire 5 Remo...

Page 21: ...eceiver If you are unable to obtain good balance by doing so then it will be necessary to add weight to the nose or tail to achieve the proper balance point 3 Turn the airplane upside down Place your fingers on the masking tape and carefully lift the plane Accurately mark the balance point on the top of the wing on both sides of the fuselage The balance point is located 75 mm back from the leading...

Page 22: ...es not flip the servo re versing switch on your transmitter to change the direction 4 By moving the position of the adjust able control horn out from the control surface you will decrease the amount of throw of that control surface Moving the adjustable con trol horn toward the control surface will in crease the amount of throw INITIAL FLYING SPORT FLYING Ailerons 3 8 up 3 8 down Elevator 3 8 up 3...

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