harrier 3d - horizon hobby · harrier 3d instruction manual 2 introduction thank you for choosing...

Hand-made Almost Ready to Fly R/C Model AircraftASSEMBLY MANUAL

Made in Vietnam.

Kit features

• Ready-made—minimal assembly & finishing required.• Ready-covered covering.• Factory-installed engine mount.• Photo-illustrated step-by-step Assembly Manual.

HARRIER 3D

SpecificationsWingspan---------------------------------------- 60.5 in---------------------------- 154cm.Wing area-------------------------------- 948.38 sq.in-------------------- 61.18 sq.dm.Approximate flying weight--------------------7-8lbs--------------------- 3.17-3.62kg.Length----------------------------------------------- 66 in------------------------ 167.64cm.Recommended engine size--------- .61-1.00 cu. in---------------------- 2-stroke. --------- .91-1.10 cu.in----------------------- 4-stroke.

Radio System required 4 channel with 6 servos.Flying skill level Intermediate/advanced.

HARRIER 3D Instruction Manual

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INTRODUCTION

Thank you for choosing the Harrier 3D ARTF by SEAGULL MODELS. The Harrier 3D was designedwith the intermediate/advanced sport flyer in mind. It is a 3D airplane which is easy to fly and quickto assemble. The airframe is conventionally built using balsa, plywood and veneer to make it strongerthan the average ARTF , yet the design allows the aeroplane to be kept light. You will find that mostof the work has been done for you already. The motor mount has been fitted and the hinges are pre-installed . Flying the Harrier 3D is simply a joy.

This instruction manual is designed to help you build a great flying aeroplane. Please read thismanual thoroughly before starting assembly of your Harrier 3D . Use the parts listing below toidentify all parts.

WARNING

Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it iscapable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOUASSUME ALL RISK & RESPONSIBILITY.If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C supplierand join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of trainingprocedures designed to help the new pilot on his way to successful R/C flight. They will also be ableto advise on any insurance and safety regulations that may apply.

ADDITIONAL ITEMS REQUIRED

.61-1.00 2-stroke engine

.91-1.10 4-stroke engineComputer radio with six servosGlow plug to suit enginePropeller to suit engineProtective foam rubber for radiosystemSilicone fuel line

TOOLS & SUPPLIES NEEDED

Thick cyanoacrylate glue30 minute epoxy5 minute epoxyHand or electric drillAssorted drill bitsModelling knifeStraight edge ruler2mm ball driverPhillips head screwdriver220 grit sandpaper90° square or builder’s triangleWire cuttersMasking tape & T-pinsThread-lockPaper towels

PARTS LISTING

FUSELAGE ASSEMBLY(1) Fuselage(1) Canopy hatch

WING ASSEMBLY

(1) Right wing half with pre-installedaileron(1) Left wing half with pre-installedaileron(2) Aluminium dihedral brace

Tail section assembly

(1) Vertical stabilizer with pre-installed rudder(1) Horizontal stabilizer with pre-installed elevator halves

Some more parts.

HARDWARE PACK

COWLINGLanding gear.....


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NOTE: To avoid scratching your new aero-plane we suggest that you cover yourworkbench with an old towel. Keep acouple of jars or bowls handy to holdthe small parts after you open thebags.Please trial fit all parts. Make sure youhave the correct parts and that theyfit and are aligned properly beforegluing! This will ensure proper as-sembly as the Harrier 3D is madefrom natural materials and minor ad-justments may have to be made.The paint and plastic parts used inthis kit are fuel proof. However, theyare not tolerant of many harsh chemi-cals including the following: paintthinner, cyano-acrylate glue accel-erator, cyanoacrylate glue de-bonderand acetone. Do not let these chemi-cals come in contact with the colourson the covering and the plastic parts.


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4)Deflect the aileron and completelysaturate each hinge with thin C/A glue. Theailerons front surface should lightly contact thewing during this procedure. Ideally, when thehinges are glued in place, a 1/64” gap or lesswill be maintained throughout the lengh of theaileron to the wing panel hinge line.

Note:

The control surfaces, including theailerons, elevators, and rudder, areprehinged with hinges installed, but thehinges are not glued in place. It isimperative that you properly adhere thehinges in place per the steps that followusing a high-quality thin C/A glue.

1) Carefully remove the aileron from oneof the wing panels. Note the position of thehinges.

2) Remove each hinge from the wing paneland aileron and place a T-pin in the center ofeach hinge. Slide each hinge into the aileronuntil the T-pin is snug against the aileron. Thiswill help ensure an equal amount of hinge ison either side of the hinge line when the aileronis mounted to the wing panel.

HINGING THE AILERONS

Note:

The hinge is constructed of a specialmaterial that allows the C/A to wick orpenetrate and distribute throughout thehinge, securely bonding it to the woodstructure of the wing panel and aileron.

3) Slide the aileron on the wing panel untilthere is only a slight gap. The hinge is nowcentered on the wing panel and aileron.Remove the T-pins and snug the aileronagainst the wing panel. A gap of 1/64” or lessshould be maintained between the wing paneland aileron.

5) Turn the wing panel over and deflect theaileron in the opposite direction from theopposite side. Apply thin C/A glue to eachhinge, making sure that the C/A penetrates intoboth the aileron and wing panel.

6) Using C/A remover/debonder and apaper towel, remove any excess C/A glue thatmay have accumulated on the wing or in theaileron hinge area.


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8) After both ailerons are securely hinged,firmly grasp the wing panel and aileron tomake sure the hinges are securely glued andcannot be pulled out. Do this by carefullyapplying medium pressure, trying to separatethe aileron from the wing panel. Use cautionnot to crush the wing structure.

Note: Work the aileron up and down severaltimes to “work in” the hinges and checkfor proper movement.

7) Repeat this process with the other wingpanel, securely hinging the aileron in place.

1) Carefully remove the elevator from oneof the horizontal stabilizer panels. Note theposition of the hinges.

2) Remove each hinge from the horizontalstabilizer panel and elevator and place a T-pinin the center of each hinge. Slide each hingeinto the elevator until the T-pin is snug againstthe elevator. This will help ensure an equalamount of hinge is on either side of the hingeline when the elevator is mounted to thehorizontal stabilizer panel.

HINGING THE ELEVATORS

3) Slide the elevator on the horizontalstabilizer panel until there is only a slight gap.The hinge is now centered on the horizontalstabilizer panel and elevator. Remove the T-pins and snug the elevator against thehorizontal stabilizer panel. A gap of 1/64” orless should be maintained between thehorizontal stabilizer panel and elevator.

4)Deflect the elevator and completelysaturate each hinge with thin C/A glue. Theelevators front surface should lightly contactthe horizontal stabilizer during this procedure.Ideally, when the hinges are glued in place, a1/64” gap or less will be maintained throughoutthe lengh of the elevator to the horizontalstabilizer panel hinge line.

Note: The hinge is constructed of a specialmaterial that allows the C/A to wick orpenetrate and distribute throughout thehinge, securely bonding it to the woodstructure of the horizontal stabilizerpanel and elevator.

5) Turn the horizontal stabilizer panel overand deflect the elevator in the oppositedirection from the opposite side. Apply thin CAglue to each hinge, making sure that the C/Apenetrates into both the elevator and horizontalstabilizer panel.


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6) Using C/A remover/debonder and apaper towel, remove any excess C/A glue thatmay have accumulated on the horizontalstabilizer or in the elevator hinge area.

8) After both horizontal stabilizer aresecurely hinged, firmly grasp the horizontalstabilizer panel and elevator to make sure thehinges are securely glued and cannot be pulledout. Do this by carefully applying mediumpressure, trying to separate the elevator fromthe horizontal stabilizer panel. Use caution notto crush the horizontal stabilizer structure.

7) Repeat this process with the otherhorizontal stabilizer panel, securely hinging theelevator in place.

Using a small weight (Weighted fuel pick-upworks well) and thread, feed the string throughthe wing as indicated.

INSTALLING THE AILERON SERVOS

Attach a 12 inch servo lead to the aileron servo.Attach the string to the servo lead and carefullythread it though the wing. Once you havethread the lead throught the wing, remove thestring so it can use for the other servo lead.Tape the servo lead to the wing to prevent itfrom falling back into the wing.


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Because the size of servos differ,you may need to adjust the size of

the precut opening in the mount. Thenotch in the sides of the mount allow theservo lead to pass through.

2) Install the aileron servo into the servomount, with the output shaft towards the lead-ing edge of the wing, using the wood screwsprovided with your radio system. Drill 1mmpilot holes through the mount.

Repeat the procedure for the other winghalf.

AILERON LINKAGE

INSTALLING THE AILERON LINKAGE

1) Using a ruler & pen to draw a straightline as below picture.

2) Locate the nylon control horns,nyloncontrol horn backplates and two machinescrews. 3) Position the aileron horn on the bot-tom side of aileron. The clevis attachmentholes should be positioned over the hinge line.

4) Using a 1.5mm drill bit and the controlhorns as a guide, drill the mounting holesthrough the aileron halves.

6)Thread one nylon adjustable controlhorn on to each aileron control rod. Threadthe horns on until they are flush with the endsof the control rods.

5) Mount the control horns by insertingthe bolts through the control horn bases andaileron halves, then into the mountingbackplates. Do Not overtighten the nuts or thebackplates may crush the wood.

1) Install the rubber grommets and brasscollets onto the aileron servo. Test fit the servointo the aileron servo mount.

(2) 2MMx30mm.

Control Horn.

Mounting Screws. Mounting Plate.

Straight line.


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PARTS REQUIRED

FUEL TANK

{1} Molded Nylon Fuel Tank {1} Preassembled Stopper Assembly {1} Metal Weighted Pick-Up {1} Silicon tube

INSTALLING THE STOPPER ASSEMBLY

1) Using a modeling knife, carefully cut offthe rear portion of one of the 3 nylon tubesleaving 1/2” protruding from the rear of thestopper. This will be the fuel pick up tube.

2) Using a modeling knife, cut one lengthof silicon fuel line. Connect one end of theline to the weighted fuel pickup and the otherend to the nylon pickup tube.

3) Carefully bend the second nylon tubeup at a 45º angle. This tube is the vent tube.


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5) With the stopper assembly in place, theweighted pickup should rest away from therear of the tank and move freely inside the tank.The top of the vent tube should rest just belowthe top of the tank. It should not touch the topof the tank.

6) When satisfied with the alignment of thestopper assembly tighten the 3mm x 20mmmachine screw until the rubber stopper ex-pands and seals the tank opening. Do notovertighten the assembly as this could causethe tank to split.

Carefully use a lighter or heat gun topermenently set the angle of the vent tube.Important: When the stopper assembly is in-stalled in the tank, the top of the vent tubeshould rest just below the top surface of thetank. It should not touch the top of the tank.

4) Test fit the stopper assembly into thetank. It may be necessary to remove some ofthe flashing around the tank opening using amodeling knife. If flashing is present, makesure none falls into the tank.

Slide the tank into the fuselage from inside sothat the neck is at the top of the fuselage andit locates through the engine bulkhead. Gentlysecure it to the top horizontal former with acable tie.

Blow through one of the lines to ensurethe fuel lines have not become kinked in-

side the fuel tank compartment. Air should flowthrough easily.

You should mark which tube is the vent andwhich is the fuel pickup when you attach fueltubing to the tubes in the stopper. Once thetank is installed inside the fuselage, it may bedifficult to determine which is which.

Attach the silicone fuel and pressure pipes tothe tank. The lower pipe is the ‘feed’ and theupper two the ‘pressure and fill’. The fill pipeis the next pipe.


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WHEEL AND WHEEL PANTS

1) Assemble and mounting the wheel pantsas shown in the following pictures.

2) Follow diagram below for wheel pantinstallation:

3) You have to trim each axle using a tollcutting and cut-off wheel.

4) A drop of C/A glue on the wheel collarscrews will help keep them from coming loseduring operation.Repeat the process for the other wheel.

Wheel Collar.

Axle.

Wheel.Nut.

Wheel Pant.

Landing Gear.

Nut.

(2) Washer.

8 mm.

(2) Wheel Collar.

Axle.

Wheel.Nut.

Nut.

(2) Washer.

Landing gear.

Caution when cutting the axles and wearprotective goggles.

46mm


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MOUNTING THE ENGINE

1)Trial fit your engine on the motor mount.The engine should be positioned so there isample clearance in the cowling for spinnerbackplate mounted to the prop drive shaft. 2)Marking 4 points on the plastic motormount. 3)Screw 4 pilot holes with 5 mm diameter. 4) Secure your engine on the motor mountby mounting with 4 bolts, 8 washers, and 4nuts provided.A drop C/A glue on the bolt threads will helpprevent loosening in flight.

5) Attach the Z-Bend in the pushrod wireto the throttle arm on the carburetor. You willneed to remove the throttle arm from the car-buretor to be able to attach the Z-bend. Whencomplete, reattach the throttle arm to the car-buretor.

PARTS REQUIRED

COWLING

{1} Molded Fiberglass Cowling{4} 3mm x 12mm Wood Screws

1) Slide the fiberglass cowl over the en-gine and line up the back edge of the cowl withthe marks you made on the fuselage.

INSTALLING THE MAIN LANDING GEAR

1) The blind nuts for securing the landinggear are already mounted inside the fuselage. 2) Using the hardware provided, mountthe main landing gear to the fuselage.

131mm


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2) While keeping the back edge of the cowlflush with the marks, align the front of the cowlwith the crankshaft of the engine. The front ofthe cowl should be positioned so the crank-shaft is in nearly the middle of the cowl open-ing. Use the spinner backplate as a guide. Holdthe cowl firmly in place using pieces of mask-ing tape.

Because of the size of the cowl, it maybe necessary to use a needle valve ex-

tension for the high speed needle valve. Makethis out of sufficient length 1.5mm wire andinstall it into the end of the needle valve. Se-cure the wire in place by tightening the setscrew in the side of the needle valve.

3) Install the muffler and muffler extensiononto the engine and make the cutout in thecowl for muffler clearance. Connect the fueland pressure lines to the carburetor, mufflerand fuel filler valve. Secure the cowl to fuse-lage using the 3mmx12mm screws (4).

1) Install the spinner backplate, propellerand spinner cone. The spinner cone is held inplace using two 3mm x 12mm wood screws.

The propeller should not touch any partof the spinner cone. If it does, use a

sharp modeling knife and carefully trim awaythe spinner cone where the propeller comesin contact with it.

This item is not included.

INSTALLING THE SPINNER

Hard wood block.


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Because the size of servos differ, you mayneed to adjust the size of the precut openingin the mount. The notch in the sides of themount allow the servo lead to pass through.

THROTTLE SERVO INSTALLTION

1) Install adjustable servo connector inthe servo arm.

3) Secure the servos with the screws pro-vided with your radio system.

2) Install the rubber grommets and brasscollets onto the throttle servo. Test fit the servointo the aileron servo mount.

3) Secure the servos with the screws pro-vided with your radio system.

4) Install the pushrod throttle.

1) Locate and cut out the covering filmfrom the servo holes in both sides of fuselage. Adjustable Servo connector.

Servo arm.

ELEVATOR - RUDDER SERVOINSTALLATION

2) Install the rubber grommets and brasscollets onto the aileron servo. Test fit the servointo the aileron servo mount.

Because the size of servos differ, you mayneed to adjust the size of the precut openingin the mount. The notch in the sides of themount allow the servo lead to pass through.


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2)Using a modeling knife, carefully removethe covering at mounting slot of horizontal sta-bilizer ( both side of fuselage).

6) Using a modeling knife, carefully re-move the covering that overlaps the stabilizermounting platform sides in the fuselage. Re-move the covering from both the top and thebottom of the platform sides.

7) When you are sure that everything isaligned correctly, mix up a generous amountof 30 Minute Epoxy. Apply a thin layer to thetop and bottom of the stabilizer mounting areaand to the stabilizer mounting platform sidesin the fuselage. Slide the stabilizer in placeand realign. Double check all of your mea-surements once more before the epoxy cures.Hold the stabilizer in place with T-pins or mask-ing tape and remove any excess epoxy usinga paper towel and rubbing alcohol.

8) After the epoxy has fully cured, re-move the masking tape or T-pins used to holdthe stabilizer in place. Carefully inspect theglue joints. Use more epoxy to fill in any gapsthat may exist that were not filled previouslyand clean up the excess using a paper toweland rubbing alcohol.

When cutting through the covering to removeit, cut with only enough pressure to only cutthrough the covering itself. Cutting into thebalsa structure may weaken it.

3) Slide the stabilizer into place in the pre-cut slot in the rear of the fuselage. The stabi-lizer should be pushed firmly against the frontof the slot. 4) With the stabilizer held firmly in place,use a pen and draw lines onto the stabilizerwhere it and the fuselage sides meet. Do thison both the right and left sides and top andbottom of the stabilizer.

HORIZONTAL STABILIZER

1) Using a ruler and a pen, locate thecenterline of the horizontal stabilizer, at the trail-ing edge, and place a mark. Use a triangleand extend this mark, from back to front,across the top of the stabilizer. Also extendthis mark down the back of the trailing edgeof the stabilizer.

5) Remove the stabilizer. Using the linesyou just drew as a guide, carefully remove thecovering from between them using a model-ing knife.


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CONTROL HORN INSTALLTION

1) Locate the two nylon control horns, twonylon control horn backplates and fourmachine screws. 2) Position the elevator horn on the bothside of elevator. The clevis attachment holesshould be positioned over the hinge line.

HINGING THE RUDDER

1) Carefully remove the rudder from one ofthe fuselage panel. Note the position of thehinges.

2) Remove each hinge from the fuselagepanel and rudder and place a T-pin in the centerof each hinge. Slide each hinge into the rudderuntil the T-pin is snug against the rudder. Thiswill help ensure an equal amount of hinge ison either side of the hinge line when the rudderis mounted to the fuselage .

3) Slide the rudder on the fuselage paneluntil there is only a slight gap. The hinge isnow centered on the fuselage panel and rudder.Remove the T-pins and snug the rudderagainst the fuselage panel. A gap of 1/64” orless should be maintained between thefuselage panel and rudder.

4)Deflect the rudder and completelysaturate each hinge with thin C/A glue. Therudder front surface should lightly contact thefuselage during this procedure. Ideally, whenthe hinges are glued in place, a 1/64” gap orless will be maintained throughout the lenghof the rudder to the fuselage panel hinge line.

Note: The hinge is constructed of a specialmaterial that allows the C/A to wick or penetrateand distribute throughout the hinge, securelybonding it to the wood structure of the fuselagepanel and rudder.

5) Turn the fuselage panel over and deflectthe rudder in the opposite direction from theopposite side. Apply thin C/A glue to eachhinge, making sure that the C/A penetrates intothe rudder and fuselage panel. 6) Using C/A remover/debonder and a

paper towel, remove any excess C/A glue thatmay have accumulated on the fuselage or inthe rudder hinge area.

Work the rudder up and down severaltimes to “work in” the hinges and checkfor proper movement.

Note:

2MM x 20MM.


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3) Using a 1.5mm drill bit and the controlhorns as a guide, drill the mounting holesthrough the elevator halves.

Control Horn.

Mounting Screws. Mounting Plate.

3) Connect the elevator and rudder servosto your radio’s receiver and turn on the sys-tem. Set the trim tabs on the transmitter toneutral and center the servo arms. The eleva-tor and rudder servo arms should be perpen-dicular to the servos.

4) One at a time, hold the pushrods in po-sition over the respective servos to check forproper servo direction. If any servo turns inthe wrong direction, switch your radio’s re-versing switches as necessary to achieve thecorrect direction.

4) Mount the control horns by inserting thebolts through the control horn bases andelevator halves, then into the mountingbackplates. Do not overtighten the nuts or thebackplates may crush the wood.

5) Position the rudder control horn on theleft side of the airplane. Mount the control hornparallel with the horizontal stabilizer.

6) Install the rudder control horn using thesame method as with the elevator controlhorns.

2) Elevator pushrods assembly followpictures below.

1) Thread one nylon adjustable controlhorn on to each aileron control rod. Threadthe horns on until they are flush with the endsof the control rods.

ELEVATOR - RUDDER PUSHROD INSTALLATION

Elevator control horn.

Rudder control horn.

13 mm.


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1) Set the tail wheel assembly in place onthe plywood plate. The pivot point of the tailwheel wire should be even with the rudderhinge line and the tail wheel bracket shouldbe centered on the plywood plate. 2 Using a pen, mark the locations of thetwo mounting screws. Remove the tail wheelbracket and drill 1mm pilot holes at the loca-tions marked.

MOUNTING THE TAIL WHEEL BRACKET

3) Secure the tail wheel bracket in placeusing two 3mm x 15mm wood screws. Becareful not to overtighten the screws.

1) Align the tail wheel wire so that the wireis parallel with the bottom of the rudder. Thecontrol clasp has a predrilled hole through thetop of it. Slide this hole onto the tail wheel wirewhile sliding the clasp over the bottom of therudder.

MOUNTING THE CONTROL CLASP

2) Using a ruler and a pen place a markonto the bottom of the rudder, in front of therear edge of the tail wheel wire. The back edgeof the clasp should line up with this mark.You may find it necessary to bend the tail wheelwire down slightly so it lines up with the claspwithout binding.

3) While holding the clasp firmly in place,use a pen and outline the clasp onto the rud-der. 4) Remove the clasp, and using a model-ing knife, remove the covering from inside thelines you drew. Use 220 grit sandpaper andcarefully roughen the inside surface of the ny-lon clasp.

INSTALLING TAIL STRUST SUPPORT

Tail strut system assembly follow picturesbelow:

5) Rudder pushrods assembly followpicture below.

5) Slide the clasp back into position andcarefully glue it into place using Kwik Bond ThinC/A. Hold the clasp in place until the glue com-pletely cures. Rescue the clap with bolt andnut as picture below.

M3 x 4cm.M3 x 4cm.


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LOCK CABLE.

M3 x 4cm.

M3 x 4cm.

M3 x 3cm.

UPPER AND BOTTOM OFHORIZONTAL FIN.

M3 x 3cm.

CABLE.

CABLELOCK.

M3 x 4cm. M3 x 4cm.


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FUSELAGEBOTTOM.

UPPEROF FUSELAGE.

See pictures detail ( pic. 1-2) ATTACHMENT WING-FUSELAGESee pictures below:

Picture 2:

M3 nut.M3 Clevis.

Picture 1:

M3 Clevis.

M3 nut.Picture 1:

LOCK CLEVIS.


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CANOPY HATCH

1) Plug the six servo leads and the switchlead into the receiver. Plug the battery packlead into the switch also.

2 Wrap the receiver and battery pack inthe protective foam rubber to protect themfrom vibration.

INSTALLING THE RECEIVER AND BATTERY

3) Position the battery pack in the fueltank compartment and the receiver just be-hind the fuel tank . Use extra foam pieces tohold them in position.

AntennaRubberBand

ModifiedServo Arm

Cut

When balancing the airplane you mayneed to move the battery or receiver for-

ward or after to achieve proper balance.

4) Using a 1/16” drill bit, drill a hole throughthe side of the fuselage, near the receiver, forthe antenna to exit. Route the antenna out ofthe fuselage and secure it to the vertical stabi-lizer using a rubber band and a modified servoarm. See picture as below.

INSTALLING THE SWITCH

Install the switch into the precut hole in thefuselage side. Use the two screws providedwith the switch to secure it in place. Drill two3/32” holes through the tray for the screws topass through.

Wing bolts( 4 pcs).

Switch.


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CONTROL THROWS

1) We highly recommend setting up theHarrier 3D using the control throws listed atright. We have listed control throws for bothLow Rate (initial test flying/sport flying) andHigh Rate (aerobatic flying).

2) Turn on the radio system, and with thetrim tabs on the transmitter in neutral, centerthe control surfaces by making adjustmentsto the clevises or adjustable servo connec-tors. The servo arms should be centered also.

correct this, move the battery and receiver for-ward orif this is not possible, stick weight ontothe firewall or use a brass heavy hub spinnerhub, similar to those offered by Harry Higley.When balanced correctly, the airplane shouldsit level or slightly nose down when you lift itup with your fingers.

1) It is critical that your airplane be bal-anced correctly. Improper balance will causeyour plane to lose control and crash. The cen-ter of gravity is located 170 -180mm back fromthe leading edge of the wing, measured at thefuselage.

2) If the nose of the plane falls, the planeis nose heavy. To correct this first move thebattery pack further back in the fuselage. Ifthis is not possible or does not correct it, sticksmall amounts of lead weight on the fuselagesides under the horizontal stabilizer. If the tailof the plane falls, the plane is tail heavy. To

BALANCING

3) When the elevator, rudder and aileroncontrol surfaces are centered, use a ruler andcheck the amount of the control throw in eachsurface. The control throws should bemeasured at the widest point of each sur-face!

4) By moving the position of the adjust-able control horn out from the control surface,you will decrease the amount of throw of thatcontrol surface. Moving the adjustable con-trol horn toward the control surface will in-crease the amount of throw.

FLIGHT PREPARATION

A) Check the operation and direction ofthe elevator, rudder, ailerons and throttle.

B) Plug in your radio system per themanufacturer's instructions and turn every-thing on.

C) Check the elevator first. Pull back onthe elevator stick. The elevator halves shouldmove up. If it they do not, flip the servo re-versing switch on your transmitter to changethe direction. D) Check the rudder. Looking from be-hind the airplane, move the rudder stick to theright. The rudder should move to the right. If itdoes not, flip the servo reversing switch onyour transmitter to change the direction.

E) Check the throttle. Moving the throttlestick forward should open the carburetor bar-rel. If it does not, flip the servo reversing switchon your transmitter to change the direction.

F) From behind the airplane, look at theaileron on the right wing half. Move the aileronstick to the right. The right aileron should moveup and the other aileron should move down. Ifit does not, flip the servo reversing switch onyour transmitter to change the direction.

Ailerons low rate - 5/8” up/downAilerons medium rate - 1” up/downAilerons high rate - 2 1/2” up/down

Elevator low rate - 9/16” up/downElevator medium rate - 1 3/4” up/downElevator high rate - 2 3/4” up/down

Rudder low rate - 1 3/4” right/leftRudder medium rate - 3” right/leftRudder high rate - 5 1/2” right/left

Recomended Control Throws

Do not use the Aerobatic 3/D settings forinitial test flying.


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5) If your radio transmitter is equippedwith dual rate switches double check that theyare on the low rate setting for your first fewflights.

PREFLIGHT CHECK

1) Completely charge your transmitterand receiver batteries before your first day offlying.

2) Check every bolt and every glue jointin the Harrier 3D to ensure that everything istight 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 shouldmove in the correct direction and not bind inany way.

6) Check to ensure the control surfacesare moving the proper amount for both lowand high rate settings.

8) Properly balance the propeller. An outof balance propeller will cause excessive vi-bration which could lead to engine and/or air-frame failure.

We wish you many safe and enjoyableflights with your Harrier 3D.

7) Check the receiver antenna. It shouldbe fully extended and not coiled up inside thefuselage.

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