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Hobbico Sturdy Birdy II Instruction Manual

Hobbico sturdy birdy ii model aircraft instruction manual
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INSTRUCTION MANUAL
WARNING! THIS IS NOT A TOY!
Assembly and operation of this aircraft must be done by or under
the direct supervision of a responsible adult. If not handled
correctly, this model is capable of inflicting serious bodily harm.
It is your responsibility and yours alone to assemble this model
correctly, properly install all R/C components and to test and
operate it in a safe and responsible manner.
Entire Contents © Copyright 1998 HCAA1010 V 2 0
ARF1P01

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Summary of Contents for Hobbico Sturdy Birdy II

  • Page 1 INSTRUCTION MANUAL WARNING! THIS IS NOT A TOY! Assembly and operation of this aircraft must be done by or under the direct supervision of a responsible adult. If not handled correctly, this model is capable of inflicting serious bodily harm. It is your responsibility and yours alone to assemble this model correctly, properly install all R/C components and to test and operate it in a safe and responsible manner.

  • Page 2: Parts List

    PARTS LIST Stock # Description Stock # Description Stock # Description Loose in Box ARF1R02 1/4 Balsa Fin ARF1MOI Subpack Hardware (Contains the Following) Al UM007P A l u m i n u m Channel ARF1R03 1/4 Balsa Rudder ARF1F01 Plastic Fuselage Tube NUTS001 4 40 Blind Nut...

  • Page 3: Table Of Contents

    The first thing you should do after reading Here is a description of some of the items you this paragraph is check the parts in this kit will need to assemble your STURDY BIRDY II against the parts list to make sure everything is here.

  • Page 4: Additional Item Check List

    D 4 Channel Radio ENGINE D 4 Standard Size Servos The STURDY BIRDY II is designed to fly with D Several 9 X 4 or 9 X 6 Propellers a standard .20 size 2-stroke engine. The OS D 2-1/2" Wheels (2) .20 FP is a great, inexpensive engine that...

  • Page 5: Tools Or Supplies Needed

    glue has cured, flip the pieces over and add a TOOLS & SUPPLIES NEEDED little glue to the other side. D Sealing Iron D Razor Saw D Hobby Knife D Pliers D Screwdrivers D T-Pins D Hammer D Wax paper D Sanding Block or Bar Sander D Nylon Reinforced Strapping Tape D Hand or Electric Drill...

  • Page 6: Installing Ca Hinges

    Note: Before proceeding to hinge the rudder. few times to provide more clearance (it is read completely through the section on really the back edge of the blade that does Installing CA Hinges. Do not use any glue the work here in widening the slot). until after the tail surfaces are covered.
  • Page 7 above. Use a razor saw to cut the excess off at pin through the center of each hinge, before installing. This pin will keep the hinge the leading and trailing edges. centered while installing the control surface. Note: When hinging the ailerons, which use torque rods, use a toothpick to force epoxy down the hole drilled for the torque rod.

  • Page 8: Stabilizer & Elevator Construction

    & ELEVATOR STABILIZER CONSTRUCTION D 11. Wrap a piece of masking tape around a 7/32" drill bit about 1/2" from the end of the bit. D 14. The stabilizer and elevator are assembled from these three main pieces. Locate these and let's get started. D 12.
  • Page 9 approximately 1" from the edge. The middle Sight down the bottom of the channel and line hinge is in the center and the other two hinges the stabilizer up with the channel (using the are centered between the outer hinges and the line you just drew).

  • Page 10: Wing Assembly

    WING ASSEMBLY Use the sketch to help you determine which side is the top and mark the top side of each piece. Make another mark 7/16" from the INSTALL THE AILERONS "inboard" end of each piece. Notch each piece to make a slot for the torque rod. Note: The threaded portion of each torque rod should stick out the top of each wing.
  • Page 11 D 6. Hold the 3/8" x 1-1/4" x 22-1/4" Ailerons in place against the sub trailing edge and under D 4. Epoxy the two 11/32" x 2" x 1-5/8" Tapered TE Supports to the inboard bottom of the torque rods. Mark the location where the each center trailing edge as shown in the photo.
  • Page 12 D 10. Insert the hinges into the slots and D 3. Lay some wax paper down on the work trial fit the ailerons in place on the wing. Do surface and mix up one ounce of epoxy. not glue the hinges until after you have Spread the epoxy throughout the slot and on covered the wing.
  • Page 13 proper reinforcement. Make sure the tape is INSTALL THE WING PROTECTOR applied with no wrinkles and that the strips are straight and parallel from wingtip to D 1. Use a sharp hobby knife or a Dremel® wingtip. If this tape is not applied, if it is Tool with a tapered cutting bit to trim out the applied incorrectly or if a different type of servo and torque rod cut-outs in the Plastic...

  • Page 14: Covering

    wing if necessary to make the protector lie are also going to cover the wing, which will flat against the wing. When satisfied with help it look nicer longer (and add a the fit, remove the servo. Use coarse small amount of strength), you can save a sandpaper to roughen the bottom of the wing little money by buying only one roll of low protector so the glue will hold better.

  • Page 15: Installing The Hinges

    D 2. The control surfaces will take some abuse in the learning-to-fly process, so you must securely glue the hinges in place. Use four to six drops of CA on each side of the hinge to secure them. Try to get the surfaces as close together as possible, but work the control surfaces back and forth while the glue is curing to make sure they work freely...
  • Page 16 Determine where the mount should be installed on the firewall. Use the template in the left column to make it easy to locate the mounting holes. Photocopy or cut out the template and tape it in place on the firewall. Poke a T-pin though the template to accurately mark the bolt locations on the firewall.
  • Page 17 end of the channel. Square battery packs fit nicely but most flat packs will also fit. Just tape them flat onto the channel. The battery should protrude approximately 1/8" past the end of the channel to keep the fuel tank from rubbing against the end of the channel.
  • Page 18 Remove the screws that hold the servo horns in place and adjust the horns so that they are perpendicular to the servo. This will be their D 9. Press the fin/rudder into the channel neutral position. It is a good idea to use single arm servo horns rather than the round horns with the back edge of the fin even with the back edge of the channel as shown in...
  • Page 19 the outer pushrod tubes over the inner pushrod until they are about 1/2" from the servo end of the inner pushrod. D 14. Install the link rods in the 2nd hole from the outer end of each control horn. With the control surfaces and the servo horns in their neutral positions, cut the inner pushrod so the link rod will thread into the inner...
  • Page 20 D 16. Assemble the throttle (short) pushrod D 18. Slide the two 1/4" plywood landing by screwing the remaining nylon clevis and gear supports into the fuselage, one on each 1" long threaded rod into one end of the short side of the aluminum channel.
  • Page 21 and enlarge the holes to 5/32". Insert a 4-40 extends about 1/4" past the front of the blind nut in each hole and use a hammer to firewall. Remove the engine assembly from the seat the blind nut in place. Replace the fuselage and glue the outer pushrod in place.

  • Page 22: Final Assembly

    bands, the throttle clevis from the servo horn B. The rudder moves to the right when the and the two front dowels. This makes left transmitter stick is moved to the adjustments and checking of the fuel system right (looking at the plane from the rear). quick and easy.

  • Page 23: Balancing

    There are several ways you can add this FLYING weight, including stuffing lead weight around The STURDY BIRDY II is a very stable Hying the fuel tank or using one of the heavy prop airplane with a unique self-recovery system nuts available.

  • Page 24: Repairing

    REPAIRING is normal for the nose to drop down so be prepared to put in a little up elevator to keep The STURDY BIRDY II is very tough, but it flying level. there may be crashes hard enough to break parts of the plane.

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