AirfoilZ YAK54 Assembly Manual

Text of AirfoilZ YAK54 User Guide:

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 4 Kit Contents: Before you start the assembly of this model, check to make sure that there are no missing parts and that none of the parts have been damaged during shipment. If you have any questions with the assembly or flying of this model, please contact us and we will be happy to assist you. If you need replacement parts please provide the model name. The parts included in the kit are shown on the Part Sheet included with the kit. Other items you may need th

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 37 Step 50 Cut the tape along the hinge line and remove the ailerons. Using your Exacto knife, carefully cut a slit along the centerline of both the aileron and the wing trailing edge at each hinge location and glue the hinges in place NOTE: that the wing has a glue seam along the centerline of the trailing edge. Make all the slits in the wing trailing edge as close as possible to the centerline, directly above the glue seam! Aileron Servo Mount Installation: Step 51 Mark the wing servo locations on the bott

• © Copyright 2008 all rights reserved 23 Wing Assembly and Installation Assembling the Spar: Step 24 Glue the spar web to the center of the bottom spar cap with thin CA being sure to keep the spar web perpendicular to the spar cap.

• © Copyright 2008 all rights reserved 13 Glue the landing gear wire support in place with medium CA making sure that the holes in the landing gear mount align with the opening in the landing gear wire support. Glue the landing gear wire torsion support in place with medium CA making sure the slot in the suppo

• AirfoilZ YAK54, YAK 54 - Full Fuselage Assembly Manual Specifications Wing Span: 40 inches Wing Area: 350 in 2 Fuselage Length: 35.5 inches Weight (ready to fly): 19 to 23 oz. Wing Loading: 7.8 to 9.5 oz/ft 2 Designed by Jim Vigani Versio

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 24 Step 25 Repeat for the top spar cap forming the “I beam” shape. Tip: When completed, lightly sand the spar edges to help it slide into the wing. Wing Assembly:

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 56 Electrical Components: Check that all electrical components are securely attached and the all plugs are fully seated. Secured any extra length on servo leads neatly within the fuselage or the wing. Avoid loose or dangling wires. For 72 MHz systems, we recommend the use of a micro antenna such as the Azarr, or the Berg Peel & Stick Antenna. Controls: Check that all the control surfaces move in the correct direction. For 3D flying

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 31 Step 38 Cut out the foam bridge behind the wood joiner, between the elevator halves. Installing the Horizontal Stabilizer Spar: Step 39 Glue the ¼”x¼” balsa horizontal stabilizer spar to the rear of the horizontal stabilizer Assembling and Installing the Horizontal Stabilizer and Elevator:

• © Copyright 2008 all rights reserved 10 Align the tab on the upper rear double flush with the skin surface. Step 5 Glue the foam stab support and ply servo supports in place with foam safe CA.

• © Copyright 2008 all rights reserved 46 Step 62 Route the aileron servo leads through the interior of the wing, and out through the exit hole. Step 63 Install the 2-56 threaded rod aileron push rods, securing at both ends with the nylon clevises provided. Bend the rod as appropriate to maintain torsion free geometry.

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 14 Glue the landing gear wire torsion support cap in place with medium CA. Repeat for the other side. Glue the crutch bottom support in place with medium CA.

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 2 A Tech Hobbies,LLC Company PO box 301 Edison, New Jersey 08817 Ph: (732)406-5726 Fax: (732)467-5504 Website: www.airfoilz.com e-mail: [email protected] © Copyright 2008 all rights reserved Limited Warranty AirfoilZ takes pride in the care and attention given to the manufacture of the components in this kit. The company warrants replacement of any materials found to be defective for their intended use prior to their use in the construction

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 3 Introduction: Thank you for choosing the YAK 54 airplane. We have taken great care to provide a design and kit components that, when properly assembled, will give you a high quality model with outstanding performance. While the assembly is not complicated, the quality and ultimate performance of your model will depend on the care you take while building. Please read these instructions carefully and be sure that you understand them before you start. Take care to assemble the components as shown and in proper alignment. Please note that some of the parts shown may be different in material from those p

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 36 Step 48 Using the sanding block, bevel the leading edge of the ailerons as shown to allow for movement of the ailerons when hinged. Step 49 Temporarily secure the ailerons to the wing with tape. Mark the position of the aileron hinges with strips of 3 / 8 ” wide painter’s tape. Use 4 hinges for each aileron. Note: To minimize aileron flexing, position the centerline of the second hinge approximately 5½“ from the side of the fuselage, near the location where the aileron control horn will be located.

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 38 Step 52 Test fit the servos in the holes. Mark the location of the plywood servo mounts and remove the servos. Glue the servo mounts in place with foam safe CA. Drill a 1/32 inch diameter pilot hole in the servo mounts at each servo mounting lug location. Control Horn Installation: Step 53 Sand the edges of the 1/32” plywood control horn parts to remove the edge caused by the laser cutting. Slide all the pieces together and then run some thin CA along the horn edges and in the joint between the horn and support. Drill a 1/1

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 54 Step 75b Velcro strip on the battery. Step 76 Glue the two, 3 mm hatch components together with medium foam safe CA. Note the retention tabs on each end.

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 18 Step 15 Test fit the canopy filler piece and glue in place with medium foam safe CA. Step 16 Glue the top cowl skin in place with medium foam safe CA. Tip: Before gluing, lightly score the backside of the top skin with an old ballpoint pen to allow the foam to be bent around the nose without cracking. Pre-bend the foam before gluing in place.

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 48 Step 66 Install the 2-56 threaded elevator push rod securing at both ends with the nylon clevises provided. Bend the rod as appropriate to maintain torsion free geometry. Rudder Pull-Pull System Installation: Step 67 Cut 1/8” wide exit slots for the pull-pull rudder control wire in the fuselage sides

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 27 Step 30 Push the wing center joint together making sure the wing root airfoil profile of both wings match at the center. Step 31 Carefully sand the wing tip profile and spar end to remove any irregularities. Glue the wing tip caps onto the wing using foam safe CA and foam safe kicker.

• AirfoilZ YAK54, © Copyright 2008 all rights reserved 30 Step 36 Using the end of the 3/16” diameter carbon elevator joiner, gently create a shallow grove in the elevator joiner cutout. Step 37 Secure the 3/16” diameter carbon elevator joiner in place with epoxy. Tip: For a lighter joint, a mixture of 15 minute epoxy and micro balloons can be used.

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AirfoilZ YAK54 Operation & user’s manual 06-10-2023 28

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