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Semi Scale Yak-54S, ARF 85” 

 
 

ASSEMBLY MANUAL 

 

 

 

Specifications 

 

Wingspan: 

   85 

in 

Length Including Spinner: 

 

78.5 in 

Wing 

Area: 

   1,320 

sq 

in 

Weight 

(RTF): 

   15.5-17 

lb 

Radio: 

    4-6 

Channel 

W/6 

Servos 

Recommended Engines: 

Gas 

  50-75cc 

 

Содержание Yak-54S

Страница 1: ...Scale Yak 54S ARF 85 ASSEMBLY MANUAL Specifications Wingspan 85 in Length Including Spinner 78 5 in Wing Area 1 320 sq in Weight RTF 15 5 17 lb Radio 4 6 Channel W 6 Servos Recommended Engines Gas 50...

Страница 2: ...allation 11 Section 4 Preparation and Installation of Hinges 14 Section 5 Wing Anti Rotation Pins and Servo Installation 18 Section 6 Tail Wheel Installation 21 Section 7 Elevator Servo Installation 2...

Страница 3: ...2003 2004 First Place Tucson Shoot Out 2004 Free Style First Place XFC 2004 precision and free style and Third Place at the Tournament of Championships in Las Vegas in 2002 Quique and I have tried to...

Страница 4: ...Bright Yellow Hanu872 Going Over the Covering Before beginning the assembly of your Yak 54 S remove each part from its bag for inspection If you find any wrinkles in the covering use a heat gun or co...

Страница 5: ...nd Wing pins clips Tail Wheel Aileron Elevator Titanium rods ball links Fuel Tank DA50 3W50 Engine Template stand offs for 3W engine Cowl and Canopy hardware Optional Dubro Hardware to complete your A...

Страница 6: ...1 16 1 8 3 16 33 25 54 Wire cutter Course and fine sandpaper Thin medium and think C A Full threaded servo mounting screws Sullivan inner nyrod Pliers Masking tape Ultra fine point sharpie Electrical...

Страница 7: ...this is not your first venture into the World of flying radio controlled aircraft For those of you that may be entering this exciting sport early on in your modeling experience and for you with vast e...

Страница 8: ...then bend this extra 1 8 inch flap of film over ninety degrees to the inside of the fuse opening and iron it to the edge of the balsa sheeting over the foam Use the trim iron for this application Do n...

Страница 9: ...ab by measuring the diagonal distance from the turtle deck to the back corners left and right of the H Stab They must be the same distance See Figure 4 Figure 4 Step 3 Mark lines on both sides of the...

Страница 10: ...to its structural integrity See Figure 5 Figure 5 Step 6 Use your iron to seal down the Ultra cote where you removed the center section before you make the final attachment Step 7 Re insert the H Stab...

Страница 11: ...extra strength Don t add too much because you will have problem sitting the nut and washer Step3 Insert the Dubro Heavy Duty Control Horn System Cat No 866 Insert the 2 8 32 through the top of the el...

Страница 12: ...Aileron Horn Installation Step 1 Locate the aileron control horn hole and servo location that is covered by ultracote Remove the covering by xacto knife Step 2 Iron around the hole that Dubro nut and...

Страница 13: ...Figure 10 13...

Страница 14: ...aces and the moveable surfaces However they are covered up with the covering film so they may be a little difficult to see and locate Look closely and you will find the hinge holes I find them more ea...

Страница 15: ...hinge will insert far enough into the hinge slot so it is in the proper location and provide enough depth for each hinge The gap between the flying surface and the control surface needs to be at a min...

Страница 16: ...we like to use Hinge Glue by Pacer You may use epoxy if you wish If you use epoxy use an epoxy with a curing time that will give you enough time to work the hinges in place before the epoxy hardens F...

Страница 17: ...Figure 16 Figure 17 Figure 18 17...

Страница 18: ...ure showing the measurement with the ruler may not look like exactly 10 5 however 10 5 mm is the correct distance from the root rib to the center hole for the keeper clip at the end of the anti rotati...

Страница 19: ...the wing anti rotation package of parts Use thin C A and glue the O ring to the fiber washer After you have installed the wings to the fuse you will use this O ring and fiber washer to slide over the...

Страница 20: ...tep 13 Make a quick check to see if the servo direction is correct Make sure the aileron sub trim and trim at your radio program are at zero Once it is at zero install the servo horn to be perpendicul...

Страница 21: ...tach the small piano wire control steering arm and be sure to use thread lock on all the screws Make a little double bend in the wire control steering arm so it will fit in the rudder steering point i...

Страница 22: ...ugh the elevator servo mounting opening Step 3 Use a piece of tape and attach the Nyrod to the end of the elevator extension servo wire and gently pull the extension through the oval holes exiting int...

Страница 23: ...to set the elevator at neutral position The ball links are mounted on the outside of the servo arms and on the inside of the elevator control horns The titanium control rods have reverse threads for e...

Страница 24: ...sure to use Pacer Z 42 Thread Locker or similar on the 4 40 threaded rod that goes into the cable connector sleeve Make careful measurements on the final length needed before you attach the cable con...

Страница 25: ...pered part of the arm is facing to the front of the fuse Also note that the pull pull control cables will be crossed They are plastic coated to avoid any metal to metal contact which might cause R F i...

Страница 26: ...of the engine box Step 2 Mark the center cut out and the four engine mounting bolt holes through the template and onto the fire wall Step 3 Cut out the center hole for the carb and drill the four hol...

Страница 27: ...le is spring loaded so the throttle will go to low engine speed if any problem occurs with the linkage etc Note that you will need to use an analog servo if you connect the linkage with the spring loa...

Страница 28: ...hen move the template half that distance up or down depending on your orientation Step 2 Mark the four engine mounting bolt holes through the template and onto the firewall Step 3 Drill the center of...

Страница 29: ...up to your engine See Figure 40 Figure 40 Step 4 Desert Aircraft recommends using throttle rod instead of cable for best results Make Z bend the side of the rod that connects to the servo and use Sul...

Страница 30: ...mark the location on the fuse landing gear mounting plate Be sure that the landing gear is swept forward and not to the rear before you drill the six holes Step 3 Remove the gear and drill the holes...

Страница 31: ...ighten the wheel collars yet Go ahead and fasten the wheel pant to the landing gear Now tighten the wheel collars making sure that the wheel is centered in the wheel pant Step 10 Attach the wheel and...

Страница 32: ...e fuel tank cap as shown in Figure 51 Figure 46 Tank depicted in above picture is for glow fuel but plumbing is the same for both Step 2 Before you mount the fuel tank you need to make a floor for the...

Страница 33: ...d sitting them on the floor of the fuselage One in front of the wing socket and the other behind the wing socket like below drawings The balsa blocks need to be flush with top of the wing socket Glue...

Страница 34: ...Keep in mind that with a full fuel tank say 20 ounces with an airplane pulling 10 G s creates a force of 200 ounces or 12 5 pounds With this much force the full fuel tank might just like to take on a...

Страница 35: ...Drill a pilot hole maybe with a 1 16 dia drill bit through the cowl into the four mounting blocks Step 3 Remove the cowl and with 4mm 20 drill bit drill holes in the wooden blocks to accept the blind...

Страница 36: ...re you have enough opening for the air to exit It will be necessary for you to cut an additional hole in the front and bottom of the cowling to allow incoming air to pass directly to the engine head F...

Страница 37: ...pen up the two canopy access holes on the side of the fuse with a no 11 Xacto blade Step 4 There is a brass metal tube installed in the fuse sides that extends to the film covering on the side of the...

Страница 38: ...he canopy tabs So beware of this situation When you have removed the canopy after a flying session the canopy screws can be left in the fuse side with just the threaded end of the screw still in the O...

Страница 39: ...servo receiver and switch Figure 62 Here are some better views See Figure 63 of the switch mount inside and the push pull rod outside the fuse You may need to make your own music wire rod to connect...

Страница 40: ...ry are mounted upfront but receiver battery location will be inside the fuselage Please make sure you move the battery around for the correct C G before final installation of the batteries Also Quique...

Страница 41: ...Figure 69 Figure 70 Figure 71 Figure 72 41...

Страница 42: ...hrough a nyrod and guide the nyrod towards the tail in between of formers A drop of CA would hold the nyrod to the formers You can exit the antenna from the fuselage or leave it inside See below Figur...

Страница 43: ...lease make sure that you carefully check the C G of your plane before you attempt to fly it C G Location Measuring 7 3 8 from trailing edge forward to wingtip would give you best 3D and precision flyi...

Страница 44: ...Control Throws Aileron As shown in Figure 78 Low Rate High Rate 2 Up 3 Up 2 Down 3 Down Figure 76 44...

Страница 45: ...Elevator As shown in Figure 79 Low Rate High Rate 1 2 5 8 Up 3 3 1 2 Up 1 2 5 8 Down 3 3 1 2 Down Figure 77 45...

Страница 46: ...Rudder As shown in Figure 80 Low Rate High Rate 1 5 8 Right 3 3 3 4 Right 1 5 8 Left 3 3 3 4 Left Figure 78 46...

Страница 47: ...g Make sure your model is secured and anchored If you noticed any problems such as shorter range servos jittering or PCM receiver locking out you have problem Do not fly your plane Ignition module on...

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