QuiQue's Aircraft Semi Scale Yak-54 Assembly Manual Download Page 1 | Manualshive

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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

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Summary of Contents for Semi Scale 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 1 ...

Page 2: ...ator Rudder and Aileron Control Horn Installation 17 Section 6 Hinging Rudder Tail Wheel Installation 19 Section 7 Elevator Servo Installation 21 Section 8 Rudder Servo and Pull Pull Installation 23 Section 9 Engine Mounting and Throttle Control Installation 26 Section 10 Landing Gear Installation 28 Section 11 Fuel Tank Installation and Engine Box Completion 31 Section 12 Engine Cowling 33 Sectio...

Page 3: ...cision and free style and Third Place at the Tournament of Championships in Las Vegas in 2002 We have tried to prepare the best assembly manual possible along with best support on our line of Aircraft We are happy to announce that we have a support forum on www Rcuniverse com that is being led by Mr Reza Gholamipour Imagine you are building your plane during the weekend when we are closed and you ...

Page 4: ...0 Bright Yellow 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 Make sure you go over the edges with your iron as well 4 ...

Page 5: ...Hardware Supplied Wing Mounting Parts Aileron Hardware Pack Elevator Hardware Pack Engine Mount Wheels Rudder Hardware Pack Canopy Hardware Pack Tail Wheel Fuel Tank 5 ...

Page 6: ... Wire cutter Course and fine sandpaper Thin medium and thick C A Full threaded servo mounting screws Music wire Dubro rod Pliers Masking tape Ultra fine point sharpie Double sided tape Small sheet metal screws Rat tail file Pin vise White glue such as Elmer s Carpenter s wood glue Round toothpick Velcro Extensions 2 18 servo extensions for Ailerons 1 18 or 24 servo extension for Elevators 1 12 ser...

Page 7: ...possible dangers that are associated with a high performance aircraft of this type This is not a toy This aircraft flying at a typical weight of ten pounds and up to one hundred miles per hour will inflect unbelievable damage to property life and limb This aircraft must be flown in a safe manner at all times You should always do a preflight check including control surfaces hook ups radio operation...

Page 8: ...ng for the wing may be done as follows Simply cut the film about 1 8 of an inch to the inside of the opening for the wing You may 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 Figure 1 Figure 2 Step 2 Cut the film on the horizontal stab openings elev...

Page 9: ...urtle deck to the back corners left and right of the H Stab They must be the same distance See Figure 5 Depicted picture is not for this plane however it s showing you how to ensure stab is perfectly centered and lined up Figure 5 Step 3 Mark lines on both sides of the H Stab top and bottom with a fine felt tip black marker an Ultra Fine Point Sharpie works well in this application Later when you ...

Page 10: ... square Before you make the final attachment of the H stab to the fuse you must check to see that the H stab is parallel with the wing To do this you may sight down the fuselage from the rear See Figure 8 Make sure you are looking straight down the middle of the fuse Depicted picture is not representing production plane color scheme Figure 8 Step 8 Sight both sides of the H stab and compare with b...

Page 11: ...moving the elevator halves around until you achieve equal distance from the stab tape the stab and elevators in the correct position by masking tape and then CA the tube to the elevator halves Use thin and medium CA and do this couple of rounds You do not need to use epoxy if you let the CA dry Make a little fillet with medium CA around the outside of the CF tube Figure 12 Figure 13 Do not glue th...

Page 12: ...od you won t need to cut the fuse at the dotted line Here s how you would attach the elevator halves and tube Insert the elevators into the stab Move one half elevator full up and the other full down Now insert the tube to one and push it in further into one of the elevator halves Now level both elevators with stab just like mentioned in step 10 Fig 12 and move the tube into the other elevator hal...

Page 13: ...n As with the Horizontal Stab there is more than one layer of film By removing the film covering you will have a stronger bond between the Vertical Fin and the Fuse as shown Figure 16 Step 4 Be careful to make a very shallow cut through the film on the V Fin so you do not cut too deeply into the V Fin sheeting A very sharp 11 blade is helpful Remove the black ink line with acetone Step 5 Glue in p...

Page 14: ... round toothpick or thin piece of 1 64 plywood The bottom hinge slots are where the problem might occur If the epoxy hardens before you clean out the hinge slots you will have a problem White glue could also be used to attach the vertical fin and clean up with water and a piece of paper towel would be much easier Figure 18 Figure 19 14 ...

Page 15: ...ce job Step 3 Take some lithium grease or Vaseline and apply a very small amount on both sides of the hinge point on the flat hinges Quique used a round toothpick See Figure 21 This will help prevent any glue in the pivot point Be very careful not to get any grease etc on the flat part of the hinges Also remember that you always glue the hinges in to the fixed surfaces first let the glue harden be...

Page 16: ...rfaces may cause flutter like aileron flutter which may cause your plane to crash where sealed control surfaces will give you better and crisper response in flight For each aileron cut x30 of clear ultracote and seal the hinge line from bottom using a straight edge and trim iron For each half elevator cut 3 8 x 9 3 4 of clear ultracote and seal the hinge line from bottom same way as you did your a...

Page 17: ...arse sandpaper only where it will be glued into the elevator Clean the PC boards with alcohol or acetone Step 2 Glue in place with epoxy 15 30 Min Be sure that the attachment point on the control horn is perpendicular to the hinge line Figure 26 Figure 27 Figure 28 You can do above steps before or after gluing your stabs It s your choice Rudder Control Horn Installation Step 1 Find the location in...

Page 18: ...bottom of each wing Note that there are two slots there Remove the covering Figure 31 Step 2 Cut out the film over the servo location hole 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 choose the 30 minute Figure 33 Figure 34 18 ...

Page 19: ... a 90 degree angle in the correct direction on the tail wheel wire that will be inserted in to a hole which you will soon drill into the rudder See Figure 36 that shows a 20mm distance from the 90 degree bend to the bottom of the plastic tail wheel mounting bracket Figure 36 Step 3 Cut the wire that will go into the rudder to about one inch in length Step 4 Drill a hole in the rudder for the tail ...

Page 20: ... 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 20 ...

Page 21: ... nose pier to grab the extension that you have passed from the elevator servo bay Step 3 Install the servo so the output shaft is towards the nose of the airplane Figure 40 Step 4 Attach the titanium rod to the ball link provided in the kit Note that the rod has opposite thread at the ends This is to help you tighten the rod into the ball links by turning the rod from middle of it Ball links are n...

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 22 ...

Page 23: ... the screws that is protruding out of the wheel Figure 45 Figure 46 Step 2 Attach the ball links provided as shown in the picture Do not use the spacer keep it for the next step Ball link needs to be mounted under the arm as pictured Figure 47 Step 3 On one end of each cable only attach the pull pull cable to the brass threaded connection pieces using the brass tubes pieces both provided as shown ...

Page 24: ...Cross the cables and exit them through the slots at the rear of the fuse Step 8 Tape the rudder to the front of the vertical fin so it will be held in a neutral position also so you will be able to determine the final length of each pull pull cable Step 9 Slip the brass sleeve over the end of the cable and then through the hole in the end of the threaded brass connector Step 10 Put the loose end o...

Page 25: ... 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 Make sure to use thread locker when tightening the screw in the ball link Figure 52 Figure 53 25 ...

Page 26: ...blind nuts using washer and bolts that are provided with your kit Apply a little CA to the sides of the blind nuts to ensure they won t be coming loose Figure 54 Step 2 Drill the first hole on the engine mount at 22 mm from the tip of the mount and second one to match your engine bolt location Both holes need to be centered on the mounts Figure 55 Step 3 Mount the engine mounts Make sure to use bl...

Page 27: ...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 27 ...

Page 28: ...ou are going to drill Mark the center of the hole Figure 61 Figure 62 Step 2 Landing gear is made of Glass Epoxy Before drilling make sure to use a piece of wood and clamp it to the gear This will prevent the back side from popping out Figure 63 Figure 64 Figure 65 Mounting Landing Gear to Fuselage Step 3 Place the landing gear on the fuse in the correct position should be swept forward and bolt i...

Page 29: ... wheel use a battery powered drill and held the lock nut in place with pliers to attach the lock nut Do not tighten completely as the wheel is not ready to be installed Step 9 Add the other lock nut with the nylon locking ring to the outside of the wheel Figure 67 Figure 68 Figure 69 Step 10 Measure the angle for the wheel pant With the wheel pants attached to the landing gear but not yet fully ti...

Page 30: ...position Wheel pant should be parallel to the fuse when plane is to a flight line position Figure 70 Figure 71 30 ...

Page 31: ...position The tank should be mounted in the fuselage so it is tall and less wide Figure 72 Step 2 You can use double sided tape or Sticky back Velcro to mount your tank to the floor This is to ensure avoiding any forward or backward movement while in flight I used Sticky back Velcro Wrap couple of rounds of masking tape to the bottom of the tank and stick the sticky back Velcro to the masking tape ...

Page 32: ...en 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 Step 4 Install the fuel lines Use a T fitting between the input line and the carb The straight line goes to the carb and the other line exits from the bottom of the firewall You are also advised to use a filter after the T fitting before...

Page 33: ... to drill for blind nuts Step 3 Install the cowl with canopy on make sure to constraint the canopy with masking tape Locate the markings on the cowl and drill a pilot hole into the cowl and the hardwood blocks See below pictures Figure 79 Figure 80 Figure 81 Step 4 Make sure to apply some thin CA to the hardwood block attachment and fuse Also apply some thin CA to sides of blind nuts after you ins...

Page 34: ...Figure 82 Figure 83 34 ...

Page 35: ...e two screw holes You can easily do this by looking from inside the fuselage Step 2 Use your Xacto 11 blade and remove the Ultra Cote Step 3 Now slip the canopy in place onto the fuselage mark and drill the holes in the canopy plywood tabs for the blind You will install the nuts in the inside of the tabs Figure 84 Step 4 Insert the blind nuts on the inside of the canopy hold down tabs and tighten ...

Page 36: ... and make the light ply more like regular aircraft plywood Step 7 Tighten the canopy screw down firmly it won t crush the harden lite plywood We want to do all we can to prevent the canopy from removing itself during flight It is very important to use the provided O Ring on the canopy hatch like on the engine cowling screws Use flat steel washers O Ring and another flat steel washer If tightened p...

Page 37: ...tep 2 Insert the pins so it goes into the second rib and 5mm of the pin protruding from the wing root Figure 90 Step 3 Glue the pin using thin CA and then make a fillet around the second rib with thick CA Figure 91 Step 4 Now install the aileron servos Step 5 Attach an 18 inch servo extension cable to the servo and make sure to use a safety clip or tape the connectors Use below method described an...

Page 38: ...l that comes with your servos to the PC board arm provided using 2 4 small screws not provided 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 96 38 ...

Page 39: ...e bottom of the receiver to the bottom of the receiver 4 Attach sticky back Velcro to the foam To ensure that you have a good bond apply some CA to the foam then stick the Velcro to it 5 Stick opposite side Velcro to the tray and mount the receiver on top of it The receiver floats gently but is not fixed too firmly If a receiver is fastened too tight in the airplane there could be problems with en...

Page 40: ...essure 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 Depot and other hardware stores Figure 102 Figure 103 Figure 104 Figure 105 Figure 106 Wrap the regulator in very thin foam and strap it to the bottom of your tray Poke a little hole in bottom of the fuse and exit the receiver antenna ...

Page 41: ... sharp xacto knife blade Figure 108 Figure 109 Figure 110 You may need to make your own music wire rod to connect the receiver switch to the outside of the fuse You may also need to drill a hole in the switch button to accept the music wire Perhaps your switch already has the parts necessary to make the connection outside the fuse 41 ...

Page 42: ... model can be very hard to control Please make sure that you carefully check the C G of your plane before you attempt to fly it C G Location Measuring 6 from trailing edge forward to wingtip would give you best 3D and precision flying However the furthest you can go from trailing edge to wing tip is 7 that means you would have a slightly nose heavy model and the aft limit from trailing edge to win...

Page 43: ...lled 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 SFGs will help you in Harrier Knife Edge and Roll stability Don t hesitate to try them Figure 112 43 ...

Page 44: ...te 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 61 mm Up Expo 56 18 mm Down Expo 30 61 mm Down Expo 56 Figure 115 Figure 116 44 ...

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 117 Figure 118 45 ...

Page 46: ...aces and make sure everything is fine Do this with and without engine running Check Your Batteries Make sure your receiver ignition and transmitter batteries are fully charged Always double check before you fly Fasteners Make sure all the bolts such as prop bolt hatch and cowl are tight After each flight check for possible loose bolts Happy flying to you from Quique s Aircraft Company Quique Sandr...

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