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Nexa YAK-9, Instruction Manual

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Nexa YAK-9 Instruction Manual Download Page 3

X

Aileron servo 
extension
cord

X

Flap servo 
extension
cord

Using the thread (pre-installed at 
factory) to slide the aileron and flap 
extension cord into the wing half. 

YAK-9

1- MAIN WING: Extension cord & Servo

3

X

X

X

This model is highly pre-fabricated and can be built in a very short time. However, the work which you have to 
carry out is important and must be done carefully. The model will only be strong and fly well if you complete 
your tasks competently - so please work slowly, accurately and check every joints, maybe apply more glue to
be safe.

SAFETY NOTES BEFORE ASSEMBLING

Read through the manual before you begin, so you will have an overall idea of what to do.

Summary of Contents for YAK-9

Page 1: ...seek professional advice if you are unexperienced ACHTUNG Dieses ferngesteuerte Modell ist KEIN Spielzeug Es ist für fortgeschrittene Modellflugpiloten bestimmt die ausreichende Erfahrung im Umgang mit derartigen Modellen besitzen Bei unsachgemäßer Verwendung kann hoher Personen und oder Sachschaden entstehen Fragen Sie in einem Modellbauverein in Ihrer Nähe um professionelle Unterstützung wenn Si...

Page 2: ...LUE Epoxy Glue 5 minute type Silicon sealer Cyanoacrylate Glue Epoxy Glue 30 minute type Purchase separately Klebstoff Epoxy Klebstoff 30min Typ Epoxy Klebstoff 5min Typ Low setting If exposed to direct sunlight and or heat wrinkels can appear Storing the model in a cool place will let the wrinkles disappear Otherwise remove wrinkles in covering film with a hair dryer starting with low temperature...

Page 3: ...hly pre fabricated and can be built in a very short time However the work which you have to carry out is important and must be done carefully The model will only be strong and fly well if you complete your tasks competently so please work slowly accurately and check every joints maybe apply more glue to be safe SAFETY NOTES BEFORE ASSEMBLING Read through the manual before you begin so you will hav...

Page 4: ...ap push rod 1 2x120mm 2 Plastic EZ link 2 Plastic control horn 2 set Plastic control horn 2 set 2x20mm screw 4 2 mm connector Flap push rod 1 2x120mm 2 MAIN WING Control horn Linkages 4 Secure the plastic control horn in place using the thin CA glue CA 2 mm YAK 9 ...

Page 5: ...excess epoxy to run out Using a paper towel clean off the excess epoxy Draw the center line on the wing joiner Coat one half of the dihedral brace with epoxy up to the center line Install the epoxy coated side of the dihedral brace into the wing joiner cavity up to the center line Hold the wing halves together with paper clamp and rubber band Rubber band not include Paper clamp not include Nylon w...

Page 6: ... Insert the main landing gear into the slot on the gear mount if necessary use sander to widen the slot to make this easier 3x12mm screw Ply gear mount plate x 2 Gear mount x 2 3x20mm screw 16 Nylon gear strap 4 Square plastic x 2 8 4 MAIN WING Fixed gear assembly 8 3x12mm screw 2mm 2mm 3x12mm screw 3x12mm screw 6 YAK 9 ...

Page 7: ... 2 2 4mm collar Wheel well cover CA Step 5A Step 5B Step 5C CA Plastic track 1 5mm Attach the plastic wheel well cover in place and secure it with litter CA glue or 2x8mm screws or 5 MAIN WING Wheel 7 Step 5E YAK 9 ...

Page 8: ...strut Note Eretract and strut must be purchase separately www motionrc com Step 6A Step 6B Step 6C Step 6D Fix the adapter in the retract with hexagon socket screws supplied with scale oleo strut Fix the strut on the adapter then tighten the locking bolt 8 YAK 9 ...

Page 9: ...e hardware you intend to use not supplied then attach the retract in place we recommend to use self tapping screws 3x15mm Slip the wheel on the axle with the circlip pointing away from the strut then attach the axle to the gear and tighten the locking bolt use LOCTITE threadlocker on every bolt 9 YAK 9 ...

Page 10: ... the ABS air scoop part A as a template trace around the outside edge of the ABS air scoop and then remove it Apply the plastic air scoop part B in place and secure with CA glue A 8 Attach the wing to the fuselage YAK 9 9 Air scoop YAK 9 10 CA Thin CA B ...

Page 11: ...er to widen the slot to make this easier If the fit is overly tight it may be necessary to lightly sand the top edge of the slot Remove the left and right elevator out of the horizontal stabilizer before insert the horizontal stabilizer 10 Air scoop continued YAK 9 11 Horizontal stabilizer YAK 9 Note The hinges are glued to the elevator only Be cautious not to cut into the wood this will weaken th...

Page 12: ... the fuselage Using the sharp hobby knife carefully cut away the covering inside the lines which were marked above Be cautious not to cut into the wood this will weaken the structure Use a small glue faucet Apply the thin CA glue on the horizontal stabilizer where it contacts the fuselage both the top and bottom sides and into the slot of the fuselage as show Securely glue together If coming off d...

Page 13: ...ment of the vertical stabilizer When you are satisfied with the alignment use a pencil to trace around the right and left of the stabilizer where it meets the fuselage 90 degree measure 12 Vertical stabilizer YAK 9 Note The hinges are glued to the rudder only Use a small glue faucet Apply the thin CA glue on the vertical stabilizer where it contacts the fuselage as show CA Thin CA Securely glue to...

Page 14: ...e before attach the elevator control horn 2mm Elevator push rod Elevator push rod Elevator control horn flat Elevator control horn flat 2mm 13 Vertical stabilizer YAK 9 CA CA Thin CA Thin CA Securely glue together If coming off during flight you lose control of your air plane 14 ...

Page 15: ...ire wall at each of the four marks marked Using a pencil or felt tipped pen mark the fire wall where the four holes are to be drilled B B B B Engine thrust on balk head is already adjust at factory Attach the engine mount beams onto the fire wall so the distance between of two engine mount beams is A Secure the engine mount beams onto the fire wall with litter CA glue A 2 Tail landing gear 1 2 2x3...

Page 16: ...drilled Note Mark the mounting plate through the engine mounting flanges Reposition the engine on the engine mount beams aligning it with the holes Secure the engine to the engine mount using four 3x25mm screws Attach the four blind nuts to the fire wall as show 3mm Remove the engine and drill a 3mm holes through the beam at each of the four marks made above 4 4 4x25mm hex bolt Blind nut 4mm washe...

Page 17: ...tor to the wooden motor mounting plate using the four 3mm bolts 5x80mm bolt 4 5mm nut 12 5mm washer 16 Using a aluminum motor mounting plate as a template mark the plywood motor mounting plate where the four holes are to be drilled Remove the aluminum motor mounting plate and drill a 1 8 3mm hole through the plywood at each of the four marks marked 3mm Align the mark on wooden motor mounting plate...

Page 18: ...low of water will show up any problems Blow Water 2 X To muffler Filler tube To engine 3x35mm screw Rubber stopper 1 After confirming the direction Insert this assembly clunk end first into the fuel tank and tighten and screw the fuel tankcap on firmly 1 5mm LiPo Battery Battery stand Battery hatch 18 Fuel tank YAK 9 19 Cowling Li po battery tray YAK 9 Battery tray 3mm plywood 18 ...

Page 19: ...Connector Elevator push rod Elevator push rod Throttle servo in case of glow engine using X Throttle push rod Connector 3 1 Connector 2x950mm rod with clevis 3 Elevator x2 Rudder x1 1 5x120mm rod 1 for Elevator linkage 1 2x500mm rod 1 for throttle in case of glow engine using 1 2x800mm rod 1 for tail wheel linkage Note Tighten all screws if they rotate out you will lose control your plane Use sili...

Page 20: ...e plane falls the plane is heavy nose To correct this move the battery pack further back in the fuselage If the tail of plane falls the plane is tail heavy To correct this move the battery forward or if this is not possible stick weight onto the firewall When balanced correctly the airplane should level or slightly nose down when you lift it up with your fingers DO NOT try to fly an out of balance...

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