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QuiQue's Aircraft Yak-54 Assembly Manual

Semi scale arf 69”
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Semi Scale Yak-54, ARF 69"
Specifications
Wingspan:
Wing Area:
Weight (RTF):
Radio:
Recommended Engines:
2-Stroke
4-Stroke
ASSEMBLY MANUAL
69 in
950 sq in
8.5-9 lb
4-6 Channel W/5 Servos
1.20
1.10-1.25
1

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Summary of Contents for QuiQue's Aircraft Yak-54

  • Page 1 Semi Scale Yak-54, ARF 69” ASSEMBLY MANUAL Specifications Wingspan: 69 in Wing Area: 950 sq in Weight (RTF): 8.5-9 lb Radio: 4-6 Channel W/5 Servos Recommended Engines: 2-Stroke 1.20 4-Stroke 1.10-1.25...

  • Page 2: Table Of Contents

    Table of Contents Quique’s Aircraft Company Covering Colors Going Over the Covering Hardware Supplied Additional Required Tools and Adhesives Servo Selection Using the Manual Warning Warranty Information Section 1-Preparing Fuselage Section 2-Horizontal Stab And Elevator Installation Section 3-Vertical Fin Installation Section 4-Preparation and Installation of Aileron Hinges Section 5-Elevator, Rudder and Aileron Control Horn Installation Section 6-Hinging Rudder &...

  • Page 3: Quique's Aircraft Company

    Online-Support:http://www.rcuniverse.com/forum/forumid_437/tt.htm Quique and I want to express our thanks to you for choosing our 69” Yak-54. We think that you will enjoy one of the best flying model aerobatic airplanes available. It is patterned after the 37% Yak-54 which took First Place honors at 2006 Don Lowe Masters Champion and 2006 Tucson Free Style Champion.

  • Page 4: Covering Colors

    Hanu872 Going Over the Covering Before beginning the assembly of your Yak-54 , remove each part from its bag for inspection. If you find any wrinkles in the covering, use a heat gun or covering iron to remove them. Use caution while working around areas where the colors overlap to prevent separating the colors.

  • Page 5: Hardware Supplied

    Hardware Supplied Elevator Hardware Pack Aileron-Hardware Pack Wing Mounting Parts Rudder Hardware Pack Engine Mount Wheels Canopy Hardware Pack Fuel Tank Tail Wheel...

  • Page 6: Additional Required Tools And Adhesives

    Additional Required Tools and Adhesives • Covering/Trim iron • Xacto knife, #11 blade • Pacer hinge glue (PT-55) • 5, 15 and 30-minute epoxy • Petroleum jelly/Lithium grease • Acetone/Alcohol swabs • Felt-tip marker • Pencil and Marker • Ruler •...

  • Page 7: Servo Selection

    Servo Selection The servos used for the control surfaces of this Yak-54 must have a minimum of 130 ounce-inch of servo torque. In the prototype Yak-54 , we used JR8411 on all control surfaces and on throttle we used one standard JR servo. Best results can be obtained by using digital servos.

  • Page 8: Section 1-Preparing Fuselage

    Section 1-Preparing Fuselage Required Tools and Adhesive • Xacto knife, #11 Blade • Trim Iron • White Glue Step 1 Use a Xacto knife with a # 11 blade Figure 2 and cut away the film covering on both sides of the fuselage for the Step 2 wing openings, Figure 1.

  • Page 9: Section 2-Horizontal Stab And Elevator Installation

    Section 2-Horizontal Stab And Elevator Installation Required Tools and Adhesive • Ultra fine point Sharpie • Acetone • Xacto knife, #11 Blade • Felt tip marker • Thin and thick C/A Step 1 Center the H. Stab so that the left tip and right tip are equal distance from Depicted picture is not for this plane, however it’s the fuselage sides.
  • Page 10 bottom that you marked along the To do this, you may sight down the right and left sides of the fuse. fuselage from the rear. Step 5 See Figure 8. Make sure you are looking straight down the middle of Use a new # 11 blade and gently cut the fuse.
  • Page 11 There two methods that you can do Step 10 this. Method 1 Insert the tube in the elevator halves so they are equal distance. Then First you need to remove the dotted insert the elevator haves into the line area of the tail with a sharp hinges (Do not glue anything just xacto knife.
  • Page 12 tube to one and push it in further into There are two white stripes of one of the elevator halves. Ultracote provided in the kit that you can use to cover the tail section of Now level both elevators with stab the plane for best appearance.

  • Page 13: Section 3-Vertical Fin Installation

    Section 3-Vertical Fin Installation Required Tools and Adhesive • Acetone • Xacto knife, #11 Blade • Felt tip marker • 30-minute epoxy • Alcohol Swab/Alcohol and paper towel • Round toothpick Figure 16 Step 1 Step 4 Insert the Vertical Fin in the fuse. Be careful to make a very shallow Mark a line along the V.
  • Page 14 the rudderpost and fuselage did not fill up with epoxy. Before the epoxy hardens, you might be able to clean out most of the epoxy with a round toothpick or thin piece of 1/64 plywood. The bottom hinge slots are where the problem might occur.

  • Page 15: Section 4-Preparation And Installation Of Aileron Hinges

    Section 4-Preparation and Installation of Aileron Hinges Required Tools and Adhesive Be very careful not to get any grease etc. on the flat part of the hinges. • Xacto knife, #11 Blade Also remember that you always glue • Lithium grease/Petroleum the hinges in to the fixed surfaces first, let the glue harden before you Jelly...
  • Page 16 Step 4 Sealing the Control Surfaces After you are done hinging the ailerons and elevators, make sure you seal the hinge line by using clear ultracote. Unsealed control surfaces may cause flutter like aileron flutter, which may cause your plane to Figure 22 crash, where sealed control surfaces will give you better and crisper...

  • Page 17: Section 5-Elevator, Rudder And Aileron Control Horn Installation

    Section 5-Elevator, Rudder and Aileron Control Horn Installation Required Tools and Adhesive • Course sandpaper • Xacto knife, #11 Blade • 30-minute epoxy • Alcohol Swab/Alcohol and paper towel Elevator Horn Installation Figure 27 Step 1 Cut the slots in the bottom of the left elevator to accept the two PC Board elevator control horns.
  • Page 18 Step 2 Cut out the film over the servo location hole. Figure 29 Figure 32 Step 3 Glue the control horns in place with 5 or 30-minute epoxy. If you work at a slow pace, perhaps you should Figure 30 choose the 30-minute.

  • Page 19: Section 6-Hinging Rudder & Tail Wheel Installation

    Section 6-Hinging Rudder & Tail Wheel Installation Required Tools and Adhesive • Xacto knife, #11 Blade • 30-minute epoxy • Alcohol Swab/Alcohol and paper towel • Wire cutter Step 1 Figure 36 First place the plastic tail wheel bracket on the tail wheel wire. Step 3 Cut the wire that will go into the rudder to about one inch in length.
  • Page 20 Step 6 Insert the tail wheel into rudder and dry fit hinging to vertical fin and fuse. Try to adjust your tail wheel bracket to look like picture below. Figure 38 Figure 39 Step 7 Now hinge the rudder to vertical fin and fuse using same method in section 4.

  • Page 21: Section 7-Elevator Servo Installation

    Section 7-Elevator Servo Installation Required Tools and Adhesive Step 4 • 18” or 24” servo extension • Sullivan inner nyrod Attach the titanium rod to the ball link • Pin vise provided in the kit. Note that the rod • 2 full threaded servo mounting has opposite thread at the ends.
  • Page 22 Step 5 Adjust the linkage size and arm so when the servo is center your elevators are flush with the stab. For ease of setting this, tape the stab and elevators using masking tape. Figure 43 Figure 44...

  • Page 23: Section 8-Rudder Servo And Pull/Pull Installation

    Section 8-Rudder Servo and Pull/Pull Installation Required Tools and Adhesive • Pliers • Masking tape • 2-4 full threaded servo mounting screws Step 1 Install the rudder servo the way that Figure 47 output shaft is towards the tail section of the plane. Attach the provided composite arm to a Step 3 standard wheel arm that comes with...
  • Page 24 Step 5 Step 9 Screw the threaded brass Slip the brass sleeve over the end of connectors half way into the plastic the cable and then through the hole ball link connection on the extended in the end of the threaded brass rudder servo arm as shown as connector.
  • Page 25 Step 12 Bend the cable over and slip the loose end into the brass sleeve and crimp and CA as mentioned above. You need to use two spacers on the ball links. One would be between the ball link and top horn and the other in between the ball link and bottom horn.

  • Page 26: Section 9-Engine Mounting And Throttle Control Installation

    Section 9-Engine Mounting and Throttle Control Installation Required Tools and Adhesive • Drill • #3 (0.213”) drill bit • #1 (0.228) drill bit Step 1 Drill the engine box for your engine. There are markings for YS and OS Figure 55 engine.
  • Page 27 Figure 58 Step 5 Mount the throttle servo so the output shaft is towards the tail of the fuse. Use ball link and rod provided to attach the servo to the throttle arm. For the servo side, use Du-Bro easy connector. Figure 59 Figure 60...

  • Page 28: Section 10-Landing Gear Installation

    Section 10-Landing Gear Installation the gear. This will prevent the back side from popping out. Required Tools and Adhesive • Drill and drill bit Landing gear comes drilled and ready to install but you still need to drill the holes for axles. Step 1 Wrap 2 rounds of masking tape to the leg of the landing gear that you...
  • Page 29 kit. Make sure to use thread locker to prevent the bolts from coming loose under vibration. Figure 67 Figure 66 Step 7 Put a washer on the gear axle and place the axle though from inside of the landing gear leg. Step 8 Figure 68 Add a washer and one of the locking...
  • Page 30 position. Wheel pant should be parallel to the fuse when plane is to a flight line position. Figure 70 Figure 71...

  • Page 31: Section 11-Fuel Tank Installation And Engine Box Completion

    Section 11-Fuel Tank Installation and Engine Box Completion tape. This way you can easily Required Tools and Adhesive remove the Velcro by taking the masking tape off, if need be. • Medium C/A • 15-30 minute epoxy • Velcro • Masking tape •...
  • Page 32 Ten G’s would not be uncommon in some violent 3-D maneuvers, which this Yak-54 is capable of doing certainly with the control surface throws that you have available.

  • Page 33: Section 12-Engine Cowling

    Section 12-Engine Cowling Required Tools and Adhesive • Pencil/Marker • Drill & 1/8” drill bit • Masking tape Follow below steps to mark the four cowling screw attachment location. Figure 80 Step 1 Put some masking tape on the fuse behind the four hardwood blocks that you installed.
  • Page 34 Figure 82 Figure 83...

  • Page 35: Section 13-Canopy Installation

    Section 13-Canopy Installation Required Tools and Adhesive • Xacto knife, #11 blade • Drill and 1/8” drill bit • Thin/Medium C/A • Rat-tail file • Alcohol swab There are two holes in the fuse, one Figure 84 on each side, to accept the screws to hold the canopy in place.
  • Page 36 on the inside of the tabs to help them stay in place. Step 5 If you have measured correctly, you should now be able to insert the two canopy hold down screws into the blind nuts. If the screws do not line up with the blind nut hole in the Figure 87 canopy hold down tab, open up the...

  • Page 37: Section 14-Wing Preparation And Aileron Servo Installation

    Section 14-Wing Preparation and Aileron Servo Installation Required Tools and Adhesive • Xacto knife, #11 blade • Fine sandpaper • Thin and thick C/A • 5-15 minute epoxy • Alcohol swab/Acetone • 18” servo extensions (2) • Small sheet metal screws Figure 91 •...
  • Page 38 Figure 93 Figure 95 Step 8 Use the two short titanium rods and ball links provided to make the connection between the extended aileron servo arm and the P/C board aileron control horn. Your final assembly should look like Figure 96. Figure 94 Step 6 Install the aileron servo so the output...

  • Page 39: Section 15-Radio Equipment

    Section 15-Radio Equipment You are now in the final stages in completing the assembly of your Yak-54. Mount the receiver using following method: 1. Cover the bottom of the receiver completely with wide masking tape. 2. Apply some beads of medium C/A.
  • Page 40 Figure 101 Figure 104 Please use exact same method of mounting your Duralite (Similar) Li- Ion battery. Duralite batteries have a fail-safe stay balance circuit soldered to battery that should not be harmed under pressure. Make sure to use Velcro straps to strap the batteries. In case of receiver you do not have to strap it if you use Industrial Strength Velcro available at Home...
  • Page 41 Figure 107 Figure 109 There are two places already cut for you to mount your switch. If you need to enlarge the compartment to fit your switch, use sharp xacto knife blade. Figure 110 You may need to make your own music wire rod to connect the receiver switch to the outside of the Figure 108...

  • Page 42: Balancing The Model

    Balancing the Model Perhaps one of the most important things that you need to check before you fly your plane is your model C.G. Correctly balancing an aerobatic model is critical to its performance and flight characteristics. An unbalanced model can be very hard to control.

  • Page 43: Side Force Generators (Optional)

    Side Force Generators (Optional) These are mounted on the wing tips. The mounting holes are already drilled in the SFG; however you will have to open up the covering. Locate the holes in the wing tips and remove the covering. Then mount the SFG with 2 bolts. The bind nuts are already located inside the wing.

  • Page 44: Control Throws

    Control Throws Aileron (As shown in Figure 113 & 114) Low Rate High Rate 55 mm Up (Expo 50) 85 mm Up (Expo 70) 55 mm Down (Expo 50) 85 mm Down (Expo 70) Figure 113 Figure 114 Elevator (As shown in Figure 115 & 116) Low Rate High Rate 18 mm Up (Expo 30)
  • Page 45 Rudder (As shown in Figure 117 & 118) Low Rate High Rate 40 mm Right (Expo 15) 60 mm Right (Expo 60) 40 mm Left (Expo 15) 60 mm Left (Expo 60) Figure 118 Figure 117...

  • Page 46: Preflight At The Field

    Preflight at the Field Range Test Your Radio Make sure you range check your radio before you attempt to fly your plane. Turn on your transmitter with antenna fully collapsed and walk away 100-150 ft. Move all your control surfaces and make sure everything is fine. Do this with and without engine running.

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