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Global Hobby AK-18, Инструкция по эксплуатации

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Version         V1.0

12-99 MTN

 All Contents          © Copyright 1999, Global Hobby Distributors

Instructions for Final Assembly

The Yak-18 was designed by the Soviet Designed Bureau Yakovlev.  It was to be used as a

primary trainer in the Soviet Air Force.  Like many of the Soviet aircraft, the Yak-18 was built to withstand
the rigors of rough field takeoffs and demanding flying.  The Yak-18 was equipped with a powerful
radial engine and rugged tricycle landing gear, just for this purpose.  It's generous wing area, coupled
with excellent flight and ground handling qualities make the Yak-18 an excellent choice for modelers.

Now you too can experience what the full size Yak-18 might have been like with your new Global

Yak-18 ARF.  The Global Yak-18 is built by master craftsmen, utilizing the finest grades of balsa,
light ply, foam and fiberglass.  It's covered using heat shrink polyester covering material, just like
you would use if you were building it yourself.  A complete set of high quality hardware is in the box.
This includes the fuel tank, wheels, pushrods, clevises and much more.  Even a high quality composite
10 x 6 propeller is included.  Don't worry about having to buy a quality aftermarket cowl to replace the
cheap plastic one that comes in some ARF's.  We've provided a one piece fiberglass cowl that's
painted to match the covering!  The scale debris screen is even molded in.  With this kind of quality
prefabrication, you'll be in the air and enjoying your new Yak-18 in no time!

.36 -.46 Sport Scale ARF

Содержание AK-18

Страница 1: ...ull size Yak 18 might have been like with your new Global Yak 18 ARF The Global Yak 18 is built by master craftsmen utilizing the finest grades of balsa light ply foam and fiberglass It s covered using heat shrink polyester covering material just like you would use if you were building it yourself A complete set of high quality hardware is in the box This includes the fuel tank wheels pushrods cle...

Страница 2: ...rol Horn 17 Installing the Rudder Pushrod 18 Aileron Pushrods 19 Installing the Control Horns 19 Installing the Aileron Pushrods 19 Cowl 19 Installing the Cowl Blocks 19 Mounting the Cowl 20 Installing the Fuel Filler 20 Installing the Fuel Lines 20 Canopy 21 Canopy Preparation 21 Mounting the Canopy 21 Final Assembly 21 Installing the Receiver and Battery 21 Installing the Switch 22 Balancing 22 ...

Страница 3: ... Split Washers q 4 4mm Hex Nuts q 1 Plywood Dihedral Brace q 1 Precovered Wing Bolt Doubler q 2 Precovered Aileron Servo Hatches q 4 10mm x 10mm x 20mm Hardwood Blocks q 4 3mm x 12mm Wood Screws q 4 3mm Flat Washers q 2 4mm x 45mm Socket Cap Screws q 2 4mm Flat Washers q 1 10 x 6 Propeller for 40 Size Engines q 1 280cc Molded Fuel Tank q 1 4mm x 28mm Nylon Pick Up Tube q 2 4mm x 28mm Prebent Nylon...

Страница 4: ... q Paper Towels q Rubbing Alcohol q Wire Cutters q 4mm Hex Driver q Magnum 12V Electric Starter 361006 q Magnum 12V Fuel Pump 237377 q Magnum Locking Glow Clip 237440 q Global 12V Battery 110171 q Global 12V Charger 110270 q Magnum Power Panel 237390 q Global Field Buddy Flight Box 233072 q Magnum 4 Way Wrench 237420 q 1 Ernst Charge Jack 124 q 1 Cirrus On Board Battery Indicator 444762 q 2 Willia...

Страница 5: ...e needed for assembly Cover your workbench with an old towel or brown paper both to protect the aircraft and to protect the table Keep a couple of jars or bowls handy to hold the small parts after you open the bags NOTE Please trial fit all the parts Make sure you have the correct parts and that they fit and are aligned properly before gluing This will assure proper assembly Since the YAK 18 is ha...

Страница 6: ...to 1 q 12 Using a pencil carefully outline the loca tions of the two wood blocks and the servo onto the bottom of the servo hatch q 13 Remove the parts from the hatch Using Kwik Bond 5 Minute Epoxy glue the two wood blocks into place on the servo hatch Allow the epoxy to fully cure before proceeding It is very important that you use epoxy in this situation C A glues will not adhere as well to the ...

Страница 7: ...ing using a heat gun to se cure the plugs in place See figure 4 below INSTALLING THE DIHEDRAL BRACE q 24 Look at the surface of each root rib on both wing halves Notice how the excess covering mate rial overlaps onto them Using a modeling knife care fully cut away the covering from both of the root ribs leaving about 1 16 of covering overlapping so it does not pull away It is important that the co...

Страница 8: ... When the epoxy has fully cured double check the center section joint If any gaps are present mix a small amount of Kwik Bond 30 Minute Epoxy to carefully fill any remaining gaps Allow the epoxy to fully cure Photo 6 PARTS REQUIRED MAIN GEAR INSTALLATION INSTALLING THE MAIN GEAR WIRES q 2 Prebent Main Gear Wires q 2 55mm Diameter Wheels q 4 Landing Gear Straps q 8 3mm x 12mm Wood Screws q 2 Wheel ...

Страница 9: ...ral angle much easier INSTALLING THE WING BOLT DOUBLER q 7 While holding the doubler in place use a pen and draw around the doubler to outline it onto the wing s surface q 8 Remove the wing bolt doubler Using a mod eling knife carefully remove the covering from just inside the outline on the wing q 9 Mix up a small quantity of Kwik Bond 5 Minute Epoxy and use it to glue the wing bolt dou bler to t...

Страница 10: ...use the stabilizer has to slide in place through the fuselage we suggest you apply a liberal amount of epoxy to only the gluing surface of the stabilizer This will prevent spreading epoxy over the entire length of one half of the stabilizer when you slide it in place After the epoxy has cured use more epoxy to fill in any gaps that may exist that were not filled previously MOUNTING THE HORIZONTAL ...

Страница 11: ...up a generous amount of Kwik Bond 30 Minute Epoxy Apply a thin layer to the mount ing slot in the top of the fuselage and to the sides and bottom of the vertical stabilizer mounting area Apply epoxy to the bottom edge of the dorsal fin and to the top of the fuselage also Set the stabilizer in place and realign Double check all of your mea surements once more before the epoxy cures Hold the stabili...

Страница 12: ...lkhead 7 8 down from the top of the wing saddle and 3 8 out from the inside edge of the fuselage side See figure 9 at top right Figure 9 q 10 Using a 7 64 drill bit carefully drill a hole through the forward bulkhead at the mark made q 11 Using a ruler and pen measure and place a mark on the forward servo tray support bulkhead 3 8 down from the top of the wing saddle and 1 4 out from the inside ed...

Страница 13: ...n the beams using a pencil For the engine to align properly with the front of the cowling it is important that the front edge of the engine s drive washer be 4 5 8 in front of the back surface of the mounting beams q 3 When satisfied with the alignment of the en gine remove the beams from the clamp and drill 3 32 pilot holes through the mounting beams at the four engine mounting hole locations Dou...

Страница 14: ...head This will secure the housing in place q 11 Using a modeling knife cut off the nylon pushrod housing 1 8 past the back edge of the for ward bulkhead q 12 Notice one end of the 1 5mm x 250mm push rod wire has a Z Bend premade in it and the other end is plain Slide the plain end of the wire into the end of the pushrod housing at the firewall Remove the throttle arm from the engine and attach the...

Страница 15: ... towards the top of the tank See photo 22 below Photo 22 q 9 With the stopper assembly in place the weighted pick up should be about 3 8 from the rear of the tank and move freely within the tank Adjust the length of the tube accordingly q 10 When satisfied with the alignment of the stopper assembly tighten the 3mm x 18mm self tap ping screw until the stopper expands and seals the tank opening Do n...

Страница 16: ...plit Elevator Pushrod Assembly q 2 Nylon Clevises q 1 Adjustable Servo Connector Assembly q 2 Nylon Control Horns w Backplates q 4 2mm x 25mm Machine Screws INSTALLING THE CONTROL HORNS q 1 Position one elevator control horn on the bot tom of each elevator half The centerline of each horn should be 3 4 out from the fuselage sides at the hinge line Position the control horns so the cle vis attachme...

Страница 17: ...hoto 25 q 8 Install one adjustable servo connector through the third hole out from the center of one servo arm You may have to enlarge the hole in the servo arm to accom modate the servo connector Remove the excess mate rial from the arm See figure 15 at top right Figure 15 After installing the adjustable servo connector apply a small drop of Kwik Bond thin C A to the nut This will prevent the nut...

Страница 18: ...ter of one dual arm servo arm You may have to enlarge the holes in the servo arm to accommodate the servo connectors Remove the excess material from the arm See figure 17 below Figure 17 After installing the adjustable servo connectors apply a small drop of Kwik Bond thin C A to the nuts This will prevent the nuts from coming loose during flight q 9 Slide the adjustable servo connector servo arm a...

Страница 19: ...d into the outermost hole in the servo arm You may have to enlarge the hole so the wire will fit through q 7 With the aileron and servo arm in neutral carefully adjust the nylon clevis by either turning it in or out until the clevis pin lines up with the holes in the control horn q 8 When satisfied with the fit attach the clevis to the fourth hole out from the bottom of the clevis See photo 29 bel...

Страница 20: ...es use a needle valve ex tension made out of scrap pushrod material to access the high speed needle valve from outside the cowl and cylinder head clearance Remove the cowl and install the muffler onto the engine Make the cutout in the cowl for muffler clearance and reinstall the cowl to check the fit A Dremel Tool with a rotary sanding bit works best to make these cutouts q 11 Remove the cowl Usin...

Страница 21: ...hat only the canopy frame is exposed Paint the canopy using Topflite Lusterkote Olive Drab spray paint following the manufacturer s recommendations Allow the paint to dry then re move the masking tape FINAL ASSEMBLY INSTALLING THE RECEIVER AND BATTERY q 1 Plug the servo leads and the switch lead into the receiver Plug the battery pack lead into the switch also You may want to use an extension lead...

Страница 22: ...the battery and receiver forward or if this is not possible stick weight onto the firewall or use a brass heavy hub spinner hub similar to those offered by Harry Higley When balanced correctly the airplane should sit level or slightly nose down when you lift it up with your fingers BALANCING Once you have flown and trimmed the Yak 18 the balance point can be moved forward or aft up to 3 8 to chang...

Страница 23: ...hey do not release in the air Cut a piece of fuel line into five 1 4 pieces Unsnap the clevises and slip one piece over each clevis Snap the clevises back in place and slide the tubing up over them q 1 Completely charge your transmitter and re ceiver batteries before your first day of flying q 2 Check every bolt and every glue joint in the Yak 18 to ensure that everything is tight and well bonded ...

Страница 24: ..._________________________________________ ______________________________________________ ____________________________________________ ___________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___________________________________________ ______...

Страница 25: ...ight C Nose drops If C Remove nose weight Yaw Into wind do inside A Wings level throughout If A Trim is correct loops using only elevator B Yaws to right in both If B Add left rudder trim Repeat tests doing inside and outside loops outside loops from C Yaws to left in both If C Add right rudder trim inverted entry inside and outside loops D Yaws to right on inside If D Add left aileron trim and le...

Страница 26: ...26 ...

Страница 27: ...ed q Wrong Size q Missing q Wrong Shape If you checked any of the boxes above did you contact our Customer Service Department to re solve the problem q Yes q No 7 Was any of the assembly difficult for you If yes please explain q Yes q No _____________________________________ _____________________________________ _____________________________________ _____________________________________ 8 What did...

Страница 28: ...Fold along dotted line Fold along dotted line Global Hobby Distributors Attn Customer Service Department 18480 Bandilier Circle Fountain Valley CA 92728 Post Office will not deliver without proper postage ...

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