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11

Hinge slot.

!

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 vertical stabilizer into the slot

in the top of the fuselage.  The rear edge of
the stabilizer  should be flush with the rear edge
of the fuselage and the lower rudder hinge
should engage the precut hinge slot in the
lower fuselage.  The bottom edge of the stabi-
lizer should also be firmly pushed against the
top of the horizontal stabilizer.

!

 

3)

While holding the vertical stabilizer

firmly in place, use a pen and draw a line on
each side of the vertical stabilizer where it
meets the top of the fuselage.

When cutting 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.

Remove
covering.

!

 

4)

Remove the stabilizer.  Using a mod-

eling knife, remove the covering from below
the lines you drew.  Also remove the covering
from the bottom edge of the stabilizer and the
bottom and top edges of the filler block.  Leave
the covering in place on the sides of the filler
block.

Pen.

!

6) When you are sure that everything is

aligned correctly, mix up a generous amount of
30 Minute Epoxy.  Apply a thin layer to the mount-
ing slot in the top of the fuselage and to the sides

!

5) Slide the vertical stabilizer back in

place.  Using a triangle, check to ensure that
the vertical stabilizer is aligned 90º to the hori-
zontal stabilizer.

90º

Vertical

Stabilizer.

Horizontal

Stabilizer.

and bottom of the vertical stabilizer mounting
area.  Apply epoxy to the bottom 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 be-
fore 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 epoxy to fully cure before
proceeding.

Содержание Extra 260

Страница 1: ...y stepAssemblyManual Made in Vietnam Specifications Wingspan 63in 160cm Wingarea 728sq in 47sq dm Weight 8 4 9 9lbs 3 8 4 5kg Length 59 4in 151cm Recommendedenginesize 91 1 25cu in 2 4stroke Radio System required 6 channel with 6 digital servos Flyingskilllevel Intermediate advanced ASSEMBLY MANUAL MS 56H ...

Страница 2: ...Glow plug to suit engine Propeller to suit engine Protective foam rubber for radio system Silicone fuel line 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 Horizon Hobby Inc guarantees this kit to be free from defects in both material and workmanship at the date of purchase This warranty does not...

Страница 3: ...t that you cover your workbench with an old towel Keep a couple of jars or bowls handy to hold the small parts after you open the bags Please trial fit all parts Make sure you have the correct parts and that they fit and are alignedproperlybeforegluing Thiswillensure proper assembly as the EXTRA 260 is made from natural materials and minor adjustments may have to be made The paint and plastic part...

Страница 4: ...is only a slight gap The hinge is now centered on the wing panel and aileron Remove the T pins and snug the aileron against the wing panel A gap of 1 64 or less should be maintained between the wing panel and aileron 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 Hinge T p...

Страница 5: ...per towel remove any excess C A glue that may have accumulated on the wing or in the aileron hinge area C A glue HINGING THE RUDDER Glue the elevator hinges in place using the same tectniques used to hinge the ailerons Glue the rudder hinges in place using the same tectniques used to hinge the ailerons ENGINE MOUNT See pictures below Mark and drill 4 holes for engine mount 4x30mm 1 Using a modelin...

Страница 6: ...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 overtighten the assembly as this could cause the tank to split You should mark which tube is the vent and which...

Страница 7: ...servo into the elevator servo mount 3 Secure the servos with the screws pro vided with your radio system 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 Remove covering Right side Elevator servo Left side Elevator servo INSTALLING THE FUSELAGE SERVO Throttle servo Rudder se...

Страница 8: ...n the mount The notch in the sides of the mount allow the servo lead to pass through INSTALLING THE AILERON SERVOS We recommended to use long servos arm 70mm diameter for all servos without throttle servo Install the rubber grommets and brass collets onto the aileron servo Test fit the servo into the aileron servo mount Using a small weight Weighted fuel pick up works well and thread feed the stri...

Страница 9: ...ic wire Pull Secure the servos with the screws pro vided with your radio system 1 Using a ruler and a pen locate the centerline of the horizontal stabilizer at the trail ing edge and place a mark Use a triangle and extend this mark from back to front across the top of the stabilizer Also extend this mark down the back of the trailing edge of the stabilizer 2 Using a modeling knife carefully remove...

Страница 10: ...ure to only cut through the covering itself Cutting into the balsa structure may weaken it 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 the bottom of the platform sides Remove covering 4 With the stabilizer held firmly in place use a pen and draw lines onto the stabilizer wher...

Страница 11: ...covering 4 Remove the stabilizer Using a mod eling knife remove the covering from below the lines you drew Also remove the covering from the bottom edge of the stabilizer and the bottom and top edges of the filler block Leave the covering in place on the sides of the filler block Pen 6 When you are sure that everything is aligned correctly mix up a generous amount of 30MinuteEpoxy Applyathinlayert...

Страница 12: ...ully cure Wing Aileron Aluminium washer M3 nut M3 lock nut Wing bottom M3 control horn Wing bottom Aileron control horn Repeat the procedure for orther wing 3x45mm C A glue ELEVATOR CONTROL HORN INSTALLATION 1 Elevator control horn Mix a small amount of 30 minute epoxy and lightly coat the inside of the hole in the elevator and the control horn screw 2 Thread the screw insert the aluminium washer ...

Страница 13: ...nserting the bolts through the control horn bases and elevator halves then into the mounting backplates Do not overtighten the nuts or the backplates may crush the wood 3 Position the rudder horn on the both side of rudder The clevis attach ment holes should be positioned over the hinge line 4 Using a 1 5mm drill bit and the control horns as a guide drill the mounting holes through the rudder halv...

Страница 14: ...vo arm Once Left side Cable adjustments are made secure the servo arm to the rudder arm servo using the screw that came with the servo Pushrod Cable Metal clevis Control horn Elevator pushrod Repeat the procedure for orther elevator RUDDER PULL PULL CABLE INSTALLATION M3 lock nut See pictures below 1 Insert servo arm into servo 150mm ELEVATOR PUSHROD INSTALLATION Repeat the procedure for elevator ...

Страница 15: ... Assemble and mounting the wheel pants as shown in the following pictures Wheel Collar Axle Wheel Nut Wheel Pant Landing Gear Nut Plywood Washer 14mm 7mm 3 You have to trim each axles and using a tool cutting and cut off wheel Caution when cutting the axles wear protective goggles 57mm Plywood Washer ...

Страница 16: ...THE ENGINE 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 2 Place your engine onto the engine mount Adjust the engine is centered of the edges of the engine case 4 Remove the engine Using an drill bit drill the...

Страница 17: ...he throttle arm to the car buretor 5 Bolt the engine to the engine mount using the four machine screws Double check that all the screws are tight before proceeding 4 2mm 4x30mm Engine 91 2 stroke 4x30mm Pushrod wire Engine 1 25 4 stroke 140mm COWLING 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 then trim and cut Pushrod ...

Страница 18: ...way the spinner cone where the propeller comes in contact with it Install the spinner backplate propeller and spinner cone INSTALLING THE SPINNER 1 5mm wire 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 Because ...

Страница 19: ...www seagullmodels com 19 INSTALLING TAIL STRUT SYSTEM Tail strut system assembly follow pictures below 3x10mm 3 2mm drill bit Turnbuckle Horizontal stabilizer M3 lock nut 14cm 8cm 0cm ...

Страница 20: ...he tail wheel bracket should be on the plywood plate 3 Using a pen mark the locations of the four mounting screws Remove the tail wheel bracket and tiller and drill 1mm pilot holes at the locations marked 3x25mm 1 You have to trim each axles and using a tool cutting and cut off wheel Caution when cutting the axles wear protective goggles 3x10mm Aluminium strap 1 2 1 2 1 1 1 2 Plastic clip ...

Страница 21: ...ervos with the screws pro vided with your radio system 4 Install the pushrod throttle Adjustable Servo connector Servo arm 4 Secure the tail wheel bracket in place using two 3x25mm wood screws Be careful not to overtighten the screws Throttle 1 Plug the six servo leads and the switch lead into the receiver Plug the battery pack lead into the switch also 2 Wrap the receiver and battery pack in the ...

Страница 22: ...attery and receiver for ward orif this is not possible stick weight onto the firewall or use a brass heavy hub spinner hub similar to those offered by Harry Higley When balanced correctly the airplane should sit level or slightly nose down when you lift it up with your fingers 2 Turn on the radio system and with the trim tabs on the transmitter in neutral center the control surfaces by making adju...

Страница 23: ...to change the direction 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 elevator halves should move up If it they do not flip the servo re versing switch on your transmit...

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