Seagull Models Extra 300S Assembly Manual Download Page 6 | Manualshive

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EXTRA 300S

Instruction Manual

6

!

3) Install the aileron servo tray into the

servo mount.

Repeat the procedure for the other wing
half

.

AILERON LINKAGE

INSTALLING THE AILERON LINKAGE

!

1) Using a ruler & pen to draw a straight

line as below picture.

!

2) Locate nylon control horns, nylon con-

trol horn backplates and 2 machine screws.

Servo arm

Servo
electric
wire

Thread

Servo arm

2MM x 20MM

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4
5
6
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8
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Summary of Contents for Extra 300S

Page 1: ...heels tank spats undercarriage spinner Photo illustratedstep by stepAssemblyManual WARNING This aicraft has been designed for intermediate level flyers First time pilot should be a experienced flyer proficient pilot This aicraft is desgined to be powered a 2 stroke 46 engine or a 4 stroke 53 engine Installation of engines other it could to lead a seious accident or damage t property Hand made Almo...

Page 2: ... 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 ...

Page 3: ... fit and are aligned properly before gluing This will ensure proper as sembly as the EXTRA 300S is made from natural materials and minor ad justments may have to be made The paint and plastic parts used in this kit are fuel proof However they are not tolerant of many harsh chemi cals including the following paint thinner cyano acrylate glue accel erator cyanoacrylategluede bonder and acetone Do no...

Page 4: ...e dihedral brace Use enough epoxy to fill any gaps 4 Insertthedihedralbraceintothedihe dral box up to the centreline With paper towels and rubbing alcohol wipe off any excess epoxy that may have squeezed out of the joint Next pour some epoxy into the dihedral box in the other wing panel Apply epoxytotheexposedportionthebrace and to the wing root of both wings Carefully slide the two wing halves to...

Page 5: ...ng Once you have thread the lead throught the wing remove the string and repeat for the other servo lead Use masking tape to secure the leads to the wing and prevent them from falling back into the wing 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 gr...

Page 6: ...epeat the procedure for the other wing half AILERON LINKAGE INSTALLING THEAILERON LINKAGE 1 Using a ruler pen to draw a straight line as below picture 2 Locate nylon control horns nylon con trol horn backplates and 2 machine screws Servo arm Servo electric wire Thread Servo arm 2MM x 20MM ...

Page 7: ...es through the aileron halves 6 Thread one clevis control horn onto each aileron torque rod Thread the clevis on until they are flush with the ends of the torque rods 5 Mount the control horns by inserting the screws through the control horn bases and aileron halves then into the mounting backplates Do not overtighten the screws or the backplates may crush the wood cut clevis Aileron Torque rod Co...

Page 8: ...ylon Fuel Tank 1 Preassembled Stopper Assembly 1 Metal Weighted Pick Up 1 Silicon tube 5 With the stopper assembly in place the weighted pickup 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 3...

Page 9: ...on the bolt threads will help prevent loosening in flight 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 5 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 t...

Page 10: ... screws will help keep them from coming lose during operation Repeat the process for the other wheel INSTALLING THE MAIN LANDING GEAR 1 The blind nuts are already mounted in side the fuselage 2 The holes in the landing gear should be to accept the mounting bolts Landing gear ...

Page 11: ...he cowl firmly in place using pieces of masking tape Because of the diameter of the cowl it may be necessary to use a needle valve extension for the high speed needle valve Make this out of sufficient 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 4 Install the muffler and muffler extension onto...

Page 12: ...lizer should be pushed firmly against the front of the slot INSTALLING THE SPINNER Install the spinner backplate propeller and spinner cone 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 3 With th...

Page 13: ...h pressure to only cut through the covering itself Cut ting into the balsa structure may weaken it 5 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 the bottom of the platform sides 6 Installed the horizontal strut support system See pictures bellow Washer Remove covering Tail gear...

Page 14: ...r in place and realign Double check all of your measurements once more before the ep oxy cures Hold the stabilizer in place with T pins or masking tape and remove any excess epoxy using a paper towel and rubbing alco hol 1 Using a modeling knife remove the covering from over the precut hinge slot cut into the lower rear portion of the fuselage This slot accepts the lower rudder hinge 2 Slide the v...

Page 15: ...l stabilizer 6 When you are sure that everything is aligned correctly mix up a generous amount of Flash 30 Minute Epoxy Apply a thin layer to the mounting slot in the top of the fuselage and to the sides and bottom of the vertical stabi lizer 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 a...

Page 16: ...side of the airplane Mount the control horn parallel with the horizontal stabilizer not in line with the rudder hinge line 6 Install the rudder control horn using the same method as with the elevator control horns ELEVATOR RUDDER PUSHROD INSTALLATION Elevator Rudder INSTALLING THE FUSELAGE SERVOS PARTS REQUIRED 3 Standard size servos 1 Receiver switch harness INSTALLINGTHESWITCH 1 Install the swit...

Page 17: ... tray Because the size of servos dif fer you may need to adjust the size of the precut openings in the tray 5 Position the servos into the servo tray with the output shafts orientated as shown below Drill 1 16 pilot holes through the tray for each of the mounting screws 6 Install adjustable servo connector in the servo arm 7 Connect the elevator rudder and throt tle servos to your radio s receiver...

Page 18: ...r ward or after to achieve proper balance 4 Using a 1 16 drill bit drill a hole through the side of the fuselage near the receiver for the antenna to exit Route the antenna out of the fuselage and secure it to the vertical stabi lizer using a rubber band and a modified servo arm See picture as below Antenna Rubber Band Modified Servo Arm Cut BELLY PAN INSTALLATION 1 Bolt the wing to fuselage 2 Pla...

Page 19: ...ck 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 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 located 4cm back from the lead ing edge of the wing measured at the wing tip 2 If the nose of the plane fal...

Page 20: ... and every glue joint in the EXTRA 300S to ensure that everything is tight and well bonded 3 Double check the balance of the air plane Do this with the fuel tank empty 4 Check the control surfaces All should move in the correct direction and not bind in any way 5 If your radio transmitter is equipped with dual rate switches double check that they are on the low rate setting for your first few flig...

Page 21: ...ce hinges for ultimate safety Comprehensivehardwarepackincludingwheels tank spats undercarriage spinner Photo illustratedstep by stepAssemblyManual WARNING Made in Vietnam This aicraft has been designed for intermediate level flyers First time pilot should be a experienced flyer proficient pilot This aicraft is desgined to be powered a 2 stroke 46 engine or a 4 stroke 53 engine Installation of eng...

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