HARRIER 3D - Horizon Hobby

1 Hand-made Almost Ready to Fly R/C Model AircraftASSEMBLY MANUALMade in features Ready-made minimal assembly & finishing required. Ready-covered covering. Factory-installed engine mount. Photo-illustrated step-by-step Assembly 3 DSpecificationsWingspan----------------- ----------------------- in---------------------------- area-------------------------------- flying weight--------------------7-8lbs-------- ------------- 66 in------------------------ engine size--------- . cu. in---------------------- 2-stroke. --------- . System required 4 channel with 6 skill level 3D Instruction Manual2 INTRODUCTIONT hank you for choosing the HARRIER 3D ARTF by SEAGULL MODELS. The HARRIER 3D was designedwith the intermediate/advanced sport flyer in mind.

2 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 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 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 & 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.

3 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 ITEMS REQUIRED . 2-stroke 4-stroke engine Computer radio with six servos Glow plug to suit engine Propeller to suit engine Protective foam rubber for radiosystem Silicone fuel lineTOOLS & SUPPLIES NEEDED Thick cyanoacrylate glue 30 minute epoxy 5 minute epoxy Hand or electric drill Assorted drill bits Modelling 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 towelsPARTS LISTINGFUSELAGE ASSEMBLY (1) Fuselage (1) Canopy hatchWING ASSEMBLY (1) Right wing half with pre-installedaileron (1) Left wing half with pre-installedaileron (2) Aluminium dihedral braceTail section assembly (1) Vertical stabilizer with pre-installed rudder (1)

4 Horizontal stabilizer with pre-installed elevator halvesSome more PACKCOWLINGL anding 3 DInstruction Manual3 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 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 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 3D Instruction Manual4 4)Deflect the aileron and completelysaturate each hinge with thin C/A glue.

5 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 :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 THE AILERONSNote: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.

6 3) Slide the aileron on the wing panel untilthere is only a slight gap. The hinge is nowcentered on the wing panel and 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 3 DInstruction Manual5 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.

7 Use cautionnot to crush the wing :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 THE ELEVATORS 3) Slide the elevator on the horizontalstabilizer panel until there is only a slight hinge is now centered on the horizontalstabilizer panel and elevator.

8 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 , 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 :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.

9 Apply thin CAglue to each hinge, making sure that the C/Apenetrates into both the elevator and horizontalstabilizer 3D Instruction Manual6 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.

10 Using a small weight (Weighted fuel pick-upworks well) and thread, feed the string throughthe wing as THE AILERON SERVOSA ttach a 12 inch servo lead to the aileron 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 the servo lead to the wing to prevent itfrom falling back into the 3 DInstruction Manual7 Because the size of servos differ,you may need to adjust the size ofthe 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 the procedure for the other LINKAGEINSTALLING THE AILERON LINKAGE 1) Using a ruler & pen to draw a straightline as below picture.