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ASSEMBLY INSTRUCTIONS

90-DAY LIMITED WARRANTY
If you, as the original owner of this model, discover defects in parts and workmanship within 90-days of purchase, Hobbico will repair or replace
it - at the option of our authorized U.S. repair facility, Hobby Services - without charge. Our liability does not include the cost of shipping to us.
However, Hobby Services will pay shipping expenses to return your model to you. You must provide proof of purchase, such as your original
purchase invoice or receipt, for your model's warranty to be honored. This warranty does not apply to damage or defects caused by misuse or
improper assembly, service or shipment. Modifications, alterations or repair by anyone other than Hobby Services voids this warranty. We are
sorry, but we cannot be responsible for crash damage and/or resulting loss of kits, engines, accessories, etc.
Your Spectrum ARF must be returned directly to Hobby Services for warranty work. The address is: Hobby Services, Attn: Service Department,
1610 Interstate Drive, Champaign, IL 61822-1067. Phone: (217) 398-0007. Please follow the instructions below when returning your model. This
will help our experienced technicians to repair and return it as quickly as possible.
1. ALWAYS return your entire system, including airplane and radio.
2. Disconnect the receiver battery switch harness and make sure that the transmitter is turned off. Disconnect all batteries and drain all fuel.
3. Include a list of all items returned and a THROUGH, written explanation of the problem and service needed. If you expect the repair to be
covered under warranty, also include your proof of purchase.
4. Include your full return address and a phone number where you can be reached during the day.
if your model is past the 90-day warranty period or is excluded from warranty coverage, you can still receive repair service through Hobby Services
at a nominal cost. Repair charges and postage may be prepaid or billed COD. Additional postage charges will be applied for non-warranty returns.
All repairs shipped outside the United States must be prepaid in U.S. funds only. All pictures, descriptions and specifications found in this
instruction manual and on the product package are subject to change without notice. Hobbico maintains no responsibility for inadvertent errors.
© Copyright 2000
HCAZ3008 for HCAA2615 V1.1

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Summary of Contents for Hobbico Spectrum

  • Page 1: Assembly Instructions

    90-DAY LIMITED WARRANTY If you, as the original owner of this model, discover defects in parts and workmanship within 90-days of purchase, Hobbico will repair or replace it - at the option of our authorized U.S. repair facility, Hobby Services - without charge. Our liability does not include the cost of shipping to us.
  • Page 2: Landing Gear

    Specially created for you and other experienced radio control Engine Mounting Parts modelers, Hobbico’s Spectrum offers nearly all the Part # Quantity excitement of piloting a real airplane...and develops skills Engine Mount ........1...
  • Page 3: Tail Assembly

    Plastic Parts Tree Tail Assembly Fuel Tank & Parts • Parts Shown Below Part # Quantity Part # Quantity 23 Stabilizer and Elevator ....1 21 Fuel Tank ...........1 24 Rudder and Fin ......1 22 Foam Fuel Tank Collar.......2 Control Horns .........2 3 x 18mm Screw ........1 2mm x 18mm Machine Screws ..4 Silicone Fuel Line.......1...
  • Page 4: Radio Equipment

    Getting Ready for Flight 1. While building your Spectrum, make sure to follow the instructions. Do not alter or modify the model, as doing so may result in an unsafe or unflyable model. In a few cases the instructions differ slightly from the photos. In those instances the instructions are correct.
  • Page 5: Before You Fly

    Protect Your Model, Yourself & Others... Follow This Important Safety Precaution Through the AMA, you should either be able to our Hobbico Spectrum is not a toy, but rather locate a modeler nearby that can help, or at a sophisticated, working model that functions least be able to phone one that can verbally very much like an actual airplane.
  • Page 6 A snug fit is desirable. If the joiner does not fit Wing Assembly properly, lightly sand any uneven surfaces from the joiner edges and sides. Note: The wing joiner has a slight dihedral angle on one edge. This angle will be on the bottom of the wing.
  • Page 7: Wing Installation

    Wing Installation 1. Remove the upper fuselage and lower fuselage pieces from the main fuselage. Set these aside in a safe location for use later in the assembly of your model. 2. Locate the three plywood wing mounting plates. 5. Test fit the wing mounting plate into position. Once Separate them and sand off any rough edges.
  • Page 8: Engine Installation

    8. Drill a 11/64" [4.5mm] hole at each paint mark. The drill should be perpendicular to the 1. Place the two plywood engine mount spacers bottom surface of the wing while drilling. The bolts behind the engine mount if you are using a must thread into the blind nuts squarely.
  • Page 9: Fuel Tank Installation

    engine mount holes onto the rails. Use a center firewall. Use medium CA to glue the tube to the punch at the marks to prevent the drill bit from firewall, but leave it free inside the fuselage until wandering, then drill 1/8" [3.1mm] holes through the servos are installed.
  • Page 10: Install The Tail Components

    kink the tube. Test fit the stopper into the fuel tank. Install the Tail Components The seam around the tank should be horizontal and the stopper hole on the left as you look at the front of the tank. By holding the tank up to the light you will be able to see where the vent tube is, in relation to the top of the tank.
  • Page 11 edge contacts the fuselage. Perform the same technique for aligning the stab as was used for aligning the wing. This time, the center on the fuselage is at the front, rather than the rear. Mark the stab so it can be returned to its aligned location. 5.
  • Page 12: Radio Installation

    7. Drill a 3/32" [2.4mm] hole, 5/8" [16mm] up 9. Attach the tail gear wire brace to the fuselage from the bottom of the rudder. Cut a groove in the using two 3mm x 10mm sheet metal screws. LE of the rudder down to the bottom to accommodate the tail gear wire.
  • Page 13 6. Cut the heat shrink tubing into 1-1/2" [38mm] lengths. Use the heat shrink tubing at each end of the pushrod to hold everything in place as shown in the photo. Apply a few drops of thin CA to each 3.
  • Page 14 13. Install the elevator pushrod. Place two Enlarge the servo horn hole with a 5/64" [2mm] drill clevis retainers onto two clevises. Thread the bit. (The Hobbico Quick Drill set (HCAR0699) works clevises 14 turns onto the pushrod. Attach the well for this purpose.)
  • Page 15 Slightly bend the pushrod wires as necessary to allow for free movement. 14. Center the elevators and elevator servo and mark the pushrod where it crosses the servo arm. Enlarge the servo horn hole with a 5/64" [2mm] drill bit. 17.
  • Page 16: Wheels

    19. Locate the two plywood aileron servo trays. Position the aileron servo trays onto the bottom of the wing, centering them over the holes in the wing for the aileron servos. Trace around the outside of 21. Install the rubber grommets and eyelets in the servo tray using a felt-tip marker.
  • Page 17: Final Assembly

    as above. from the outside hole on the control horn. 24. Install the aileron nylon control horns. The 26. Attach the clevises to the second hole from control horns are positioned 1/2" [13mm] towards the top of the control horns. Center the ailerons, the tip of the wing from the centerline of the servo.
  • Page 18 them to the wing. best finish. 2. Use a sharp hobby knife, scissors or Lexan 4. Use the same gluing technique to glue the ® shears to trim the upper fuselage at the rear for the lower fuselage to the main fuselage as shown. fin and stabilizer.
  • Page 19 will be removed for the muffler. clearance gap between the cowl and the muffler. 6. Slide the cowling into position. Temporarily 8. Apply the decals to the cowling, lining them attach the propeller and spinner to the engine. up with the trim scheme on the fuselage. Position the cowling to have 1/8"...
  • Page 20: Wheel Installation

    together, then wick thin CA into the joint. landing gear struts. Paint the pilot and cockpit to your liking with 2. Using a pen, place marks on the mounting enamel model paint, then glue it into the cockpit blocks using the flat metal straps as templates. using medium CA or 6-minute epoxy.
  • Page 21: Retract Installation

    landing gear cover plates to the mounting blocks. be purchased separately. 5. Position the landing gear assemblies into the 1. Locate the plywood retract servo tray. Separate wing. The struts will be placed towards the tip of the supports from the main tray and sand off any the wing.
  • Page 22 are embossed into the wing sheeting, and can be up and down positions. seen easier if the covering is pressed down against the sheeting in the area of the wheel well using your index finger. (Be careful not to accidentally break the sheeting.) 4.
  • Page 23: Tail Wheel Installation

    6mm machine screws. Grind or file a flat spot at bolts using a 1/4" [6mm] drill bit. Cut a notch in the the point of set screw contact. This provides a front of the fairing to allow for clearance of the better area for the screw to bite and helps keep the center ribs on the wing.
  • Page 24: Control Surface Throws

    as shown in the photo. We added a Great Planes accomplish the job, you may need to work with a Switch Mount & Charge Jack (GPMM1000, not combination of adjustments by also repositioning included) for convenience and ease of use at the the pushrod at the servo end.
  • Page 25: Balance Your Model Laterally

    1. The balance point (C.G.) is located 5-1/4" and aft.” [132mm] back from the leading edge of the wing. Balance your Spectrum using a Great Planes C.G. Now that you have the basic airplane nearly Machine Airplane Balancer (GPMR2400) for the completed, this is a good time to balance the ™...
  • Page 26: Clevises

    Find A Safe Place to Fly 2. With the wing level, lift the model by the Since you have chosen the Spectrum ARF, we engine propeller shaft and the fin post (this may assume that you are an experienced modeler.
  • Page 27: Ama Safety Code (Excerpt)

    loose bolts that may cause vibration, a defective manufacturer’s recommendations. Do not use on/off switch, low battery voltage or a defective hands, fingers or any other body part to try to stop receiver battery, a damaged receiver antenna, or a the engine.
  • Page 28: Pushrod

    Other Kits Available from Hobbico frequencies currently allowed by the Federal Communications Commission. Flying The Spectrum is a great flying sport airplane that flies smoothly and predictably, yet is highly maneuverable. It does not have the self-recovery characteristics of a primary trainer, and therefore...

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