Black Horse Model Cobra Instruction Manual Book
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Black Horse Model Cobra Instruction Manual Book

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Instruction Manual book
SPECIFICATION
 Wingspan :
 Wing Area:
 Length
 Weight
 Engine
 Radio
 Servo
1,360 mm
2
36.4 dm
:
1,310 mm
:
2,700 gr
:
46 cu.in
72 cu.in
:
4 channels
:
5 servos
53.5 in
564 sq.in
51.6in
5.94 lbs
2 stroke
4 stroke
Made in Vietnam.

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Summary of Contents for Black Horse Model Cobra

  • Page 1 Instruction Manual book SPECIFICATION  Wingspan : 1,360 mm 53.5 in  Wing Area: 36.4 dm 564 sq.in  Length 1,310 mm 51.6in  Weight 2,700 gr 5.94 lbs  Engine 46 cu.in 2 stroke 72 cu.in 4 stroke  Radio 4 channels ...

  • Page 2: Parts List

    COBRA. Instruction Manual This instruction manual is designed to help you build a great flying aeroplane. Please read this manual thoroughly before starting assembly of your COBRA. Use the parts listing below to identify all parts. WARNING Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is capable of causing injury to people or property.

  • Page 3: Safety Precaution

    COBRA. INSTRUCTION MANUAL SAFETY PRECAUTION + This is not a toy + Be sure that no other flyers are using your C/A glue radio frequency. + Do not smoke near fuel + Store fuel in a cool, dry place, away from children and pets.

  • Page 4: Instruction Manual

    COBRA. Instruction Manual  4) Using the thread as a guide and using Top side masking tape, tape the servo lead to the end of the thread: carefully pull the thread out. When you have pulled the servo lead out, remove the masking tape and the servo lead from the thread.
  • Page 5 COBRA. INSTRUCTION MANUAL Straitgh line. Servo arm.  2) Locate nylon control horns, nylon con-  6) Thread one clevis control horn onto each trol horn backplates and 2 machine screws. aileron torque rod. Thread the clevis on until they are flush with the ends of the torque rods.
  • Page 6 COBRA. Instruction Manual Repeat the procedure for the other wing half. INSTALLING THE LANDING GREAR  3) Using the two landing gear straps as a guide, mark the locations of the four 3mm x 12mm mounting screws onto the wing sur- face.

  • Page 7: Joining The Wing Halves

    COBRA. INSTRUCTION MANUAL  6) Slide one wheel collar with 3mm x 6mm set screw onto each axle. Push the wheel collars on as far as they will go and tighten the set screws. Alumium brace. Be careful not to overtighten the set screws.
  • Page 8 COBRA. Instruction Manual Installing steering arm as below. Steering arm. Adjust the nose gear steering arm until the arm is parallel with the fire wall. INTALLING THE ENGINE MOUTH Steering arm. Install the pushrod wire as shown. Pushrod throttle. FUEL TANK INSTALLING THE STOPPER ASSEMBLY ...
  • Page 9 COBRA. INSTRUCTION MANUAL  3. Carefully bend the second nylon tube up  8. Feed three lines through the fuel tank at a 45 degree angle (using a cigarette lighter). compartment and through the pre-drilled hole This tube will be the vent tube to the muffler.
  • Page 10 COBRA. Instruction Manual INTALLING THE ENGINE-THROTTLE Trim and cut. Pushrod wire. COWLING  1) Slide the fiberglass cowl over the en- gine and line up the back edge of the cowl with the marks you made on the fuselage.  2) While keeping the back edge of the cowl flush with the marks, align the front of the cowl with the crankshaft of the engine.

  • Page 11: Servo Installation

    COBRA. INSTRUCTION MANUAL SERVO INSTALLATION  3) Slide the cowl back over the engine and secure it in place using four wood Throttle servo. Rudder servo. screws.See picture below.  4) Install the muffler and muffler extension onto the engine and make the cutout in the cowl for muffler clearance.
  • Page 12 COBRA. Instruction Manual  1) Using a ruler and a pen, locate the centerline of the horizontal stabilizer, at the trail- ing edge, and place a mark. Use a triangle and extend this mark, from back to front, across the top of the stabilizer. Also extend this mark down the back of the trailing edge of the stabilizer.

  • Page 13: Vertical Stabilizer Installation

    COBRA. INSTRUCTION MANUAL  4) Remove the stabilizer. Using the lines VERTICAL STABILIZER you just drew as a guide, carefully remove the INSTALLATION covering from between them using a modeling See picture below knife. When cutting through the covering to remove it, cut with only enough pressure to only cut through the covering it’s self.
  • Page 14 COBRA. Instruction Manual  3) While holding the vertical stabilizer firmly in place, use a pen and draw a line on each side of the vertical stabilizer where it meets the top of the fuselage. C/A glue Pen.  4) Remove the stabilizer. Using a mod- eling knife, remove the covering from below the lines you drew.

  • Page 15: Pushrod Installation

    COBRA. INSTRUCTION MANUAL mounting area. Apply epoxy to the bottom and top edges of the filler block and to the lower hinge also. Set the stabilizer in place and re- align. Double check all of your measurements once more before the epoxy cures. Hold the...

  • Page 16: Installing The Throttle Pushrod

    COBRA. Instruction Manual INSTALLING THE THROTTLE PUSHROD Install one adjustable metal connector through the third hole out from the center of one servo arm, enlarge the hole in the servo arm using a 2mm drill bit to accommodate the servo connector. Remove the excess material from the arm.

  • Page 17: Wing Attachment

    COBRA. INSTRUCTION MANUAL WING ATTACHMENT CONTROL THROWS See picture wing attach to fuselage.       1) We highly recommend setting up a plane using the control throws listed. Wing bolt.      ...

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