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Seagull Models BUNKER BU 133, Instruction Manual

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Seagull Models BUNKER BU 133 Instruction Manual Download Page 14

Bunker Bu 133

Instruction Manual.

14

3) Install the muffler and muffler 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 M3x10mm screws.

INSTALLING THE PROPELLER.

       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 propel-

ler comes in contact with it.

Summary of Contents for BUNKER BU 133

Page 1: ... A L Specifications Wingspan 65 0 in 165 cm Wing area 1240 0 sq in 80 0 sq dm Weight 11 0 lbs 5 0 kg Fuselage Length 57 8 in 146 80cm Engine 0 9cu in 2 stroke 1 2cu in 4 stroke 20 22cc gasoline engine Radio 4 channel with 6 servos MS 212 Graphics and specifications may change without notice ...

Page 2: ...ou build a great flying earoplane Please read this manual throughly before starting assembly of your BUNKER BU 133 User the parts listing below to indentify all parts INTRODUCTION WARNING KIT CONTENTS 1 2 3 3 6 7 4 5 2 Please be awere that this aeroplane is not a toy and if assemble or used incorrectly it is capable of causing injury to people or property WHEN YOU FLY THIS AEROPLANE YOU ASSUME ALL...

Page 3: ...elling 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 HINGING THE ELEVATORS 1 Locate the item for this sectiom of the manual 2 Carefully remove the elevator from one of the horizontal stabilizer panels Note the position of the hinges 3 Remove each hinge from the hori zo...

Page 4: ...re necessary to install the control horns for the ailerons INSTALL THE AILERON CONTROL HORN Epoxy Glue the hinge hinges in place using the sametechniquesusedtohingtheailerons Elevator control horn Epoxy Install the elevator control horn using the same method as same as the aileron control horns INSTALL ELEVATOR CONTROL HORN Elevator control horn Epoxy Epoxy ...

Page 5: ...pening in the mount The notch in the sides of the mount allow the servo lead to pass through 1 Install the rubber grommets and brass collets onto the fuselage servo Test fit the servo into the aileron servo mount 2 Secure the servos with the screws pro vided with your radio system Throttle Rudder Elevator Elevator THROTTLE SERVO ARM INSTALLATION Install adjustable servo connector in the servo arm ...

Page 6: ...and cut Switch INSTALLINGTHESTOPPER ASSEMBLY 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 2 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 A B Switch ...

Page 7: ...bly tighten the 3 x 20mm ma chine screw until the rubber stopper expands and seals the tank opening Do not over tighten the assembly as this could cause the tank to split 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 the tank is installed inside the fuselage it may be difficult to determine wh...

Page 8: ...x30mm head bolts and four 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 Thread locker glue MOUNTING THE ENGINE 2 stroke 1 Position the engine with the drive washer 145mm forward of the firewall as shown 145mm 2 Use a pin drill and 4mm drill bit to drill a small indentation in the m...

Page 9: ... Position the engine between the mounts Use four M4x30mm machine screws to secure the engine to the mount as shown Machine screw M4x30mm Pushrod wire 8 Reinstall the servo horn by sliding the connector over the pushrod wire Center the throttle stick and trim and install the servo horn perpendicular to the servo center line 9 Movethethrottlesticktotheclosed po sition and move the carburetor to clos...

Page 10: ...Bunker Bu 133 Instruction Manual 10 Cut Epoxy Drill hole 3mm ...

Page 11: ... place by tightening the set screw in the side of the needle valve 2 While keeping the back edge of the cowl flush with the marks align the front of the cowl with the crankshaft of the engine The front of the cowl should be positioned so the crankshaft is in nearly the middle of the cowl opening Hold the cowl firmly in place using pieces of masking tape 3 Install the muffler and muffler extension ...

Page 12: ... drill a small indentation in the mount for the engine mounting screw 3 Use a drill to drill the four holes in the engine mount rails 4 On the fire wall has the location for the throttle pusshrod tube pre drill 5 Slide the pushrod tube in the firewall and guide it through the fuel tank mount Use medium C A to glue the tube to the firewall and the fuel tank mount 6 Connect the Z bend in the 450mm t...

Page 13: ...e fuselage then trim and cut as shown Trim and cut 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 ficient 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 ...

Page 14: ...e Connect the fuel and pressure lines to the carburetor muffler and fuel filler valve Secure the cowl to fuse lage using the M3x10mm screws INSTALLING THE PROPELLER 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 propel ler comes in contact with it ...

Page 15: ... through the wing as indicated 2 Place the servo between the mount ing blocks and space it from the hatch Use a pencil to mark the mounting hole locations on the blocks 3 Use drill bit in a pin vise to drill the mouting holes in the blocks 4 Apply 2 3 drops of thin C A to each of the mounting holes Allow the C A to cure without using accelerator C A glue 5 Use dental floss to secure the connec tio...

Page 16: ...e wing to pull the aileron lead through to the wing root 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 9 Set the aileron hatch in place and use a Phillips screw driver to install it with four wood screws 2x10mm AILERONPUSHRODHORN INSTALLATION Please see below pictures ...

Page 17: ...re move the covering at mounting slot of horizontal stabilizer both side of fuse lage Draw center line 3 Slide the stabilizer into place in the precut slot in the rear of the fuselage The stabilizer should be pushed firmly against the front of the slot 4 With the stabilizer held firmly in place use a pen and draw lines onto the stabi lizer where it and the fuselage sides meet Do this on both the r...

Page 18: ...th only enough pressure to only cut through the covering itself Cutting into the balsa structure may weaken it Double check all of your measurements 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 8 After the epoxy has fully cured remove the masking tape or T pins used to hold the stabiliz...

Page 19: ...hen you are sure that everything is aligned correctly mix up a generous amount of Flash 30 Minute Epoxy Ap ply a thin layer to the mounting slot and to bottom of the vertical stabilizer mounting area Apply epoxy to the bot tom and top edges of the filler block and to the lower hinge also Set the stabilizer in place and realign Double check all of your measurements once more before the epoxy cures ...

Page 20: ...Bunker Bu 133 Instruction Manual 20 M2 lock nut M2 clevis 8mm Elevator pushrod 8mm Nylon Snap keeper RUDDER PU SHRODHORN INSTALLATION M2 lock nut M2 clevis 8mm Metal clevis Hex nut Fuel tubing ...

Page 21: ...WWW SEAGULLMODELS COM 21 MOUNTING THE TAIL WHEEL Locate items necessary to imstall tail gear 8mm Rudder pushrod Metal clevis Hex nut Fuel tubing ...

Page 22: ...Bunker Bu 133 Instruction Manual 22 INSTALLING THE MAIN LANDING GEAR TO FUSELAGE Nose wheel steering arm Metal clevis C A glue ...

Page 23: ...o cut threads in the surround ing wood Apply a small amount of thin CA to harden the threads make by the screws Position the landing gear so it rakes forward Use the screws and land ing gear straps to secure the landing gear to the bottom of the fuselage 3x15mm Collar Collar ...

Page 24: ...nker Bu 133 Instruction Manual 24 CABANE STRUT INSTALLATION 1 Loacte the items for this section of the manual 2 Attach the cabane struts to the fuselage according to the length as shown Mark 3x10mm 3x6mm ...

Page 25: ...WWW SEAGULLMODELS COM 25 INSTALLATION PILOT AND CANOPY 1 Locate items necessary to install pilot seats 3x10mm ...

Page 26: ... scale pilot figures made by Seagull factory They are available at Seagull distributors If you are going to install a pilot figure please use a sanding bar to sand the base of the figure so that it is flat 3 Position the pilot figure on the canopy floor as show Locate the oval shaped on the canopy floor and remove the cover ing Use epoxy to glue this into the base of the pilot figure and glue the ...

Page 27: ...m the sheet Please be cer tain the model is clean and free from oily fingerprints and dust Position decal on the model where desired using the pho tos on the box and aid in their location 2 Wrap the receiver and battery pack in the protective foam rubber to protect them from vibration ATTACHMENT WING FUSELAGE Attach the aluminium tube into fuselage Insert two lower wing panels as pictures below Wi...

Page 28: ...he manual 2 Attach the two wing struts to the top of lower wing pant using an M3x20mm nachine screw 3 Repeat steps to prepare the remaining wing panel for installation and use pliers to bend four of the brass tabs at a slight angle Make the bend slightly biased to ward the larger hole in the tab 4x10mm ...

Page 29: ...en a clevis on the cable end as shown Prepare only one end of each cable at this time 2 Attach the clevis to the brass tab next to the rear interplane strut on the upper lower wing Slide a copper crimp on the cable Pass the cable through the brass tab on the upper wing the back through the copper crimp M3 clevis Crimp Metal Cable M3x30mm ...

Page 30: ...sition of the wing Once the cables have been tensioned begin by securing the crimps where the cables pass through the tabs near the fuselage Then secure the crimps at the cable ends Once tensioned use side cutters to trim the excess cable 4 Locate the wing transport frams and rubber bands Slide the frames between the top and the bottom wing as shown Use a rubber band to hold the frame to the top a...

Page 31: ...y then require more speed for take off and make it more difficult to slow down for landing Moving the balance aft makes the model more agile with a light er and snappier feel In any case please start at the location we recommend With the wing attached to the fuselage all parts of the model installed ready to fly and empty fuel tanks hold the mod el at the marked balance point with the stabilizer l...

Page 32: ...Bunker Bu 133 Instruction Manual 32 CONTROL THROWS Ailerons Up 20 mm Down 20 mm Elevator Up 20 mm Down 20 mm Rudder Right 30 mm Left 30 mm 180 mm ...

Page 33: ... look at the aileron on the right wing half Move the aileron stick to the right The right aileron should move up and the other aileron should move down If it does not flip the servo reversing switch on your transmitter to change the direction 1 Completely charge your trans mitter and receiver batteries before your first day of flying 2 Check every bolt and every glue joint in the BUNKER BU 133 to ...

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