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Ripmax SU KHOI31 Instruction Manual Book

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Instruction Manual book
SPECIFICATION
Wingspan :
Length
Weight
Radio
Servo
Engine
1,750 mm
:
1,730 mm
:
4.8 kg
:
06 channels.
:
06 servos.
:
160 cu.in
200 cu.in
68.9 in.
68.1in.
10.56 Lbs.
2 Stroke.
4 Stroke.
Made in Vietnam.

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Summary of Contents for Ripmax SU KHOI31

  • Page 1 Instruction Manual book SPECIFICATION Wingspan : 1,750 mm 68.9 in. Length 1,730 mm 68.1in. Weight 4.8 kg 10.56 Lbs. Radio 06 channels. Servo 06 servos. Engine 160 cu.in 2 Stroke. 200 cu.in 4 Stroke. Made in Vietnam.
  • Page 2 SUKHOI 31. 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 SUKHOI 31. 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

    SUKHOI 31. INSTRUCTION MANUAL. Caution: this model is not a toy! SAFETY PRECAUTION. If you are a beginner to this type of powered + This is not a toy model, please ask an experienced model flyer + Be sure that no other flyers are using your for help and support.
  • Page 4 SUKHOI 31. INSTRUCTION MANUAL. C/A glue. Remove the covering. Bottom of wing. 3. Using the thread as a guide and using 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, re- move the masking tape and the servo lead from the thread.
  • Page 5 SUKHOI 31. INSTRUCTION MANUAL. Remove the covering Bottom side. Remove the covering. Top side. Repeat the procedure for the other wing half. INSTALLING THE AILERON CONTROL HORN. 3x50mm. M3 lock nut. Nilon control clasp. Control horn of Aileron...

  • Page 6: Installing The Aileron Linkages

    SUKHOI 31. INSTRUCTION MANUAL. Install aileron control horn as same as picture below. Control horn. Repeat the procedure for the other wing half. INSTALLING THE AILERON LINKAGES. Installing the aileron linkages as pictures below. M3 lock nut Attach the clevis to the outer hole in the con- trol horn.

  • Page 7: Installing The Engine Mount

    SUKHOI 31. INSTRUCTION MANUAL. INSTALLING THE ENGINE MOUNT. 4x30mm 4x30mm FUEL TANK. INSTALLING THE STOPPER ASSEMBLY C/A glue.
  • Page 8 SUKHOI 31. INSTRUCTION MANUAL. Fuel pick- up tube Vent tube 7. Using a modeling knife, cut 3 lengths of fuel line 150mm long. Connect 2 lines to the 2 vent tubes and 1 line to the fuel pickup tube in the stopper.
  • Page 9 SUKHOI 31. INSTRUCTION MANUAL. Do not secure the tank into place perma- nently until after balancing the airplane. You may need to remove the tank to mount the battery in the fuel tank compartment. INSTALLING THE ENGINE- THROTTLE. Locate the long piece of wire used for the throttle pushrod.
  • Page 10 SUKHOI 31. INSTRUCTION MANUAL. Pushrod wire. 4 x30mm. Secure. COWLING. 1. Slide the fiberglass cowl over the en- Right side. gine and line up the back edge of the cowl with the marks you made on the fuselage. Left side.

  • Page 11: Installing The Spinner

    SUKHOI 31. INSTRUCTION MANUAL. 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. The front of the cowl should be positioned so the crankshaft is in nearly the middle of the cowl opening.
  • Page 12 SUKHOI 31. INSTRUCTION MANUAL. Secure. MAIN GEAR INSTALATION. PARTS REQUIRED 1. Assemble and mounting the wheel pants as shown in the following pictures. Repeat the procedure for the other wheel pant . 2. A drop of C/A glue on the wheel collar screws will help keep them from coming lose during operation.

  • Page 13: Installing The Main Landing Gear

    SUKHOI 31. INSTRUCTION MANUAL. INSTALLING THE MAIN LANDING GEAR. 1. The blind nuts are already mounted inside the fuselage. 2. The holes in the landing gear should be to accept the mounting bolts. 3. Using the hardware provided, mount the main landing gear to the fuselage. MOUNTING THE TAIL WHEEL BRACKET.

  • Page 14: Horizontal Stabilizer Installation

    SUKHOI 31. INSTRUCTION MANUAL. Secure. elevator servo left side ELEVATOR INSTALLATION SERVO INSTALLATION elevator servo right side 1. Install the rubber grommets and brass collets into the elevator servo. Test fit the servo into the servo tray. 2. Mount the servo to the tray using the mounting screws provided with your radio HORIZONTAL STABILIZER INSTALLATION.
  • Page 15 SUKHOI 31. INSTRUCTION MANUAL. 1. Using a modeling knife, cut away the covering from the fuselage for the stabilizer and remove it. C/A glue. 2. Draw a center line onto the horizontal stabilizer. Then put the horizontal into the fuse large.
  • Page 16 SUKHOI 31. INSTRUCTION MANUAL. Check to mark sure the wing and stabi- lizer are paralell. If they are not, lightly sand the opening in the fuselage for the stabilizer until the stabilizer is paralell to the wing. 5. When you are sure that everything is aligned correctly, mix up a generous amount of 30 minute epoxy.
  • Page 17 SUKHOI 31. INSTRUCTION MANUAL. 6. After the epoxy has fully cured, removethe masking tape or T-pins used to hold the stabilizer in place and carefully inspect the glue joints. Use more epoxy to fill in any gaps that were not filled previously and clean up the excess using a paper towel and rubbing alcohol.

  • Page 18: Vertical Installation

    SUKHOI 31. INSTRUCTION MANUAL. ELEVATOR PUSHDROD VERTICAL INSTALLATION. INSTALLATION Elevator pushrod install as same as the way of aileron pushrod. Vertical stabilizer installation Left side. See picture below. Hinge. Right side. 1. Using a modeling knife cut away the covering from the end of fuselage for the rud- der hinge.
  • Page 19 SUKHOI 31. INSTRUCTION MANUAL. Also carefully remove the covering from the horizontal fin as below the lines which you drew as same picture below. Remove covering. Hinge slot. 2. Put the rudder into the fuselage as same as picture below. 3.

  • Page 20: Rudder Pushrod Installation

    SUKHOI 31. INSTRUCTION MANUAL. RUDDER PUSHROD INSTALLATION. 1. Rudder pushrod install as same as the way of aileron control horn. 2. Rudder push - pull system install as same as picture below. M3 clevis ( 4pcs for push - pull system ). M3 lock nut.
  • Page 21 SUKHOI 31. INSTRUCTION MANUAL. Cut. Elevator Elevator pushrod. pushrod. Rudder push - pull cable Rudder cable. Rudder cable.

  • Page 22: Installing The Throttle Pushrod

    SUKHOI 31. INSTRUCTION MANUAL. 3. Secure the tail wheel bracket in place Conector. using three 3mm x 12mm wood screws. Be careful not to overtighten the screws. Servo arm. 3X12mm After installing the adjustable metal connec- tor apply a small drop of thin C/A to the bot- tom nut.

  • Page 23: Installing The Receiver And Battery

    SUKHOI 31. INSTRUCTION MANUAL. 2. Wrap the receiver and battery pack in the protective foam to protect them from vi- bration. Use a rubber band or masking tape to hold the foam in place. 3. Position the battery pack and receiver behind the fuel tank.

  • Page 24: Wing Attachment

    SUKHOI 31. INSTRUCTION MANUAL. Battery WING ATTACHMENT. 1. Using a modeling knife, remove the cov- ering fuselage. Locate the aluminium wing dihedral brace. Wing bolt. Secure the wing and fuse large through wing )***Test fit the aluminium tube dihedral bolt as picture below. brace into each wing haft.
  • Page 25 SUKHOI 31. INSTRUCTION MANUAL. BALANCING. 1) It is critical that your airplane be bal- anced correctly. Improper balance will cause your plane to lose control and crash. THE CENTER OF GRAVITY IS LOCATED 120MM BACK FROM THE LEADING EDGE OF THE WING. 2) Mount the wing to the fuselage.

  • Page 26: Control Throws

    SUKHOI 31. INSTRUCTION MANUAL. 120mm CONTROL THROWS. 1) We highly recommend setting up a plane using the control throws listed. 2) The control throws should be meas- ured at the widest point of each control sur- face. 3) Check to be sure the control surfaces move in the correct directions.
  • Page 27 SUKHOI 31. INSTRUCTION MANUAL.

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