Table of Contents
Advertisement
Quick Links
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!
Version
V1.0
12-99 MTN
All Contents © Copyright 1999, Global Hobby Distributors
1
Advertisement
Table of Contents
Related Manuals for Global Hobby AK-18
Summary of Contents for Global Hobby AK-18
- Page 1 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! Version V1.0 12-99 MTN All Contents © Copyright 1999, Global Hobby Distributors...
-
Page 2: Table Of Contents
Fuel Tank...............14 Kit Contents..............3 Stopper Assembly..........14 Additional Items Required..........4 Stopper Installation..........15 Tools and Supplies Needed..........4 Fuel Tank Installation..........15 Field Support Equipment Needed........4 Servo Installation............16 Metric Conversion Chart..........4 Installing the Fuselage Servos........16 Wing Assembly..............5 Throttle Connection............16 Hinging the Ailerons..........5 Installing the Throttle Connector......16 Installing the Aileron Servos........6 Elevator Pushrod............16 Installing the Servo Hatches........6... -
Page 3: Kit Contents
This instruction manual is designed to help you build a straight, great flying airplane. Please read this manual thoroughly before beginning assembly of your new Yak-18. Use the parts listing below to identify and sepa- rate all of the parts before beginning assembly. **KIT CONTENTS** We have organized the parts as they come out of the box for better identification during assembly. -
Page 4: Additional Items Required
{1} Hitec 4 or More Channel Radio w/5 Servos FOR 2 CYCLE ENGINE {2} Cirrus 12” Servo Extensions # 444713 {1} Magnum XL .36 - .46 Two Cycle Engine {1} Cirrus Y-Harness # 444728 {1} Propeller To Suit Engine {1} Dubro Heat Shrink Tubing # 440 {1} Thunderbolt Glow Plug # 115493 {1} Dubro Foam Rubber # 513 {1} Magnum Polished Spinner Nut # 237210... -
Page 5: Wing Assembly
If you should find a part missing or have questions about assembly, please call or write to the address below: Customer Service Center 18480 Bandilier Circle Fountain Valley, CA. 92728 Phone: (714) 963-0329 Fax: (714) 964-6236 E-Mail: service@globalhobby.com **SUGGESTION** To avoid scratching your new airplane, do not unwrap the pieces until they are needed for assembly. -
Page 6: Installing The Aileron Servos
12) Using a pencil, carefully outline the loca- INSTALLING THE AILERON SERVOS tions of the two wood blocks and the servo onto the 6) Locate the two aileron servos, two 12” aile- bottom of the servo hatch. ron extensions, one Y-Harness and Dubro heat shrink tubing that you purchased separately. -
Page 7: Installing The Dihedral Brace
18) Attach one 12” aileron extension to one servo INSTALLING THE DIHEDRAL BRACE lead. Cut one 1-1/2” length of heat shrink tubing and 24) Look at the surface of each root rib on both slide it over the extension lead. Place the tubing over wing halves. -
Page 8: Joining The Wing Halves
the wing halves and lightly sand the edges and tips of the dihedral brace. Test fit the wing halves together with the dihedral brace installed again. Repeat until PARTS REQUIRED you are satisfied with the fit of the wing halves. {2} Prebent Main Gear Wires {2} 55mm Diameter Wheels 28) When satisfied with the fit of the wing... -
Page 9: Installing The Main Gear Wheels
6) With the wing held firmly in position, set INSTALLING THE MAIN GEAR WHEELS the wing bolt doubler in place. The rear edge of the 8) Slide one nylon spacer, then one wheel and doubler should be flush with the trailing edge of the one wheel collar with set screw onto each axle. -
Page 10: Mounting The Horizontal Stabilizer
2) Slide the stabilizer into place in the precut 7) On the top and bottom of the stabilizer, draw slot in the rear of the fuselage. To center the stabi- a line where it and the fuselage sides meet. Do this lizer from side to side, measure the stabilizer from on both the right and left sides. -
Page 11: Vertical Stabilizer Installation
MOUNTING THE VERTICAL STABILIZER 5) When you are sure that everything is aligned correctly, mix up a generous amount of Kwik Bond PARTS REQUIRED 30 Minute Epoxy. Apply a thin layer to the mount- {1} Vertical Stabilizer with Rudder ing slot in the top of the fuselage and to the sides {3} C/A Style Hinges and bottom of the vertical stabilizer mounting area. -
Page 12: Installing The Steering Arm
INSTALLING THE STEERING ARM Figure # 9 3/8” Forward 2) Place one wheel collar into the molded re- Bulkhead cess in the nylon steering arm. Make sure the threaded 7/8” hole in the wheel collar is aligned with the predrilled hole in the side of the steering arm. -
Page 13: Installing The Nose Gear Wheel
surface. The engine should be mounted on the "tall" mounting brackets and attach the Z-Bend into the hole side of the beams. See photo # 16 below. furthest out in the steering arm. Reattach the nose gear and steering arm assembly as done previously. Photo # 16 Clamp 17) Using a pair of pliers, carefully bend the... -
Page 14: Installing The Throttle Pushrod
5) Install the motor mount assembly to the fire- 12) Notice one end of the 1.5mm x 250mm push- wall using the four 4mm x 20mm machine screws rod wire has a Z-Bend premade in it and the other and four 4mm flat washers. Tighten the screws com- end is plain. -
Page 15: Stopper Installation
There are three molded holes in the rubber fuel STOPPER INSTALLATION tank stopper. Two are opened and one is cov- 8) Press fit the stopper assembly into the tank ered by a thin layer of rubber on the front of the stop- opening. -
Page 16: Servo Installation
throttle servo output shaft is moving in the correct di- rection. When the throttle stick is moved forward from idle to full throttle the servo should rotate clockwise. INSTALLING THE FUSELAGE SERVOS 1) Locate the three servos you intend to use 3) Slide the adjustable servo connector/servo for the elevator, rudder/steering and throttle controls. -
Page 17: Installing The Elevator Pushrod
2) When satisfied with the alignment, use a Figure # 15 Screw Servo 5/64” drill bit, and the control horns as a guide, and Connector drill the mounting holes through the elevator halves. Servo Washer 3) Mount the control horns to the elevators by inserting the four 2mm x 25mm machine screws Washer through the control horn mounting bases, through the... -
Page 18: Installing The Rudder Pushrod
the bottom of the rudder at the hinge line. Position the 8) Install two adjustable servo connectors control horn so the clevis attachment holes are directly through the third hole out from the center of one in-line with the hinge line. See figure # 16 below. dual-arm servo arm. -
Page 19: Aileron Pushrods
8) When satisfied with the fit, attach the clevis to the fourth hole out from the bottom of the clevis. See photo # 29 below. PARTS REQUIRED {2} 2mm x 76mm Threaded Wires w/Z-Bends Photo # 29 {2} Nylon Control Horns w/Backplates {4} 2mm x 25mm Machine Screws {2} Nylon Clevises Pushrod... -
Page 20: Mounting The Cowl
2) When satisfied with the fit, use 220 grit sand- 10) Cut the holes in the cowl to access the high paper and remove the paint from where the mounting and low speed needle valves (use a needle valve ex- blocks will be glued in place. -
Page 21: Canopy
Olive Drab spray paint, following the manufacturer's recommendations. Allow the paint to dry then re- PARTS REQUIRED move the masking tape. {1} Molded Clear Canopy MOUNTING THE CANOPY CANOPY PREPARATION 6) Glue the canopy in place using RC256 Canopy Glue. Run a bead of the glue along the entire 1) Using a sharp knife or Lexan Canopy Scis- perimeter of the canopy, then set the canopy it place. -
Page 22: Installing The Switch
Once you have flown and trimmed the Yak-18 INSTALLING THE SWITCH the balance point can be moved forward or aft 4) The switch should be mounted on the fuse- up to 3/8” to change the flight performance. Moving lage side, opposite the muffler, close enough to the the balance point back will cause the airplane to be receiver so the lead will reach. -
Page 23: Preflight Check
B) Check the elevator first. Pull back on PREFLIGHT CHECK the elevator stick. The elevator halves should move 1) Completely charge your transmitter and re- up. If it they do not, flip the servo reversing switch ceiver batteries before your first day of flying. on your transmitter to change the direction. -
Page 24: Notes
______________________________________________ When it is time to land always bring the airplane in ____________________________________________ with a small amount of power. It is not a good habit ___________________________________________ to just chop the throttle and dive the airplane to the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ground. -
Page 25: Trim Chart
After you have test flown and done the initial trim changes to the aircraft, use the Trim Chart below to begin trimming your airplane. Following and adhering to this chart will result in the ability to diagnose trim problems and correct those problems using the simple adjustments shown below. Making these observations and related corrections will result in a truer, straighter and better flying airplane. -
Page 27: Product Evaluation Sheet
ODUCT EV ODUCT EV A L U A L U A L U A A A A A TION SHEET TION SHEET TION SHEET P R ODUCT EV ODUCT EV ODUCT EV A L U A L U TION SHEET TION SHEET P R ODUCT EV ODUCT EV... - Page 28 Post Office will not deliver without proper postage Global Hobby Distributors Attn: Customer Service Department 18480 Bandilier Circle Fountain Valley, CA. 92728 Fold along dotted line...
Need help?
Do you have a question about the AK-18 and is the answer not in the manual?
Questions and answers