Summary of Contents for Giant J3-90
- Page 1 Giant J3-90 Almost‐Ready‐to‐Fly INSTRUCITION MANUAL Specifications Wingspan: 91 in (2306mm) Length: 59in (1503mm) Wing Area: 1185sq in (76.4sq dm) Flying Weight (EP): Approx. 12lbs (5300g)
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Page 2: Dear Customer
Dear Customer, Congratulations on your purchase of Giant J3-90 ARF from Value Hobby. We thank you for your generous support, and hope you enjoy your new airplane. At Value Hobby, we hope to offer competitive prices, good performance, and products that you can setup and use with ease. -
Page 3: Safety In Flying
Safety in Flying This is NOT a toy! It is a very high‐performance RC airplane capable of high speeds and extreme maneuvers. It should only be operated by a competent pilot in a safe area with proper supervision. ONLY fly your aircraft in a safe, open area, away from spectators and vehicles–and where it is legal to fly. -
Page 4: Recommended Radio Equipment
RECOMMENDED RADIO EQUIPMENT Product Quantity Radio Flysky I6 6CH transmitter and receiver set FLY-RC-4572 5(nitro) Servo Towerpro MG996R standard servo TWP-SV-0372 4 (electric) Servo Universal Servo Extension 18-Inch (Futaba "J" and JR Compatible) AMS-AC-0562 Extension Y-Harness Universal Servo Y-Harness 12-Inch (Futaba "J" and JR Compatible) - Page 5 1. Wings 2. Fuselage 3. Elevator 4. Rudder and fin...
- Page 6 Hatch Steel cable x 1 Cowling Fitting x 8 M2.3x8mm self-tapping screw x 4 Brass tube x 8 M3 x 16mm socket head screw x 3 550cc fuel tank M3 x12mm self-tapping socket head screw x 3 350mm cable tie x 2...
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Page 7: Section1. Aileron Installation
Section1. Aileron Installation Step4. Test fit the aileron to the wing through the Step1. Remove the coverings as shown. hinge. Step2. Insert four hinges into the wing. Step5.Apply thin CA to secure the aileron to the wing. Step3. Apply some thin CA to secure the hinge to the wing. -
Page 8: Section2. Aileron Servo Installation
Step4. Use two self-tapping M2.3x8mm screws to Section2. Aileron Servo Installation secure the block won’t loose. Step1. Prepare a servo with servo arm and pushrod connector installed. Connect a servo lead extension to the servo lead. Secure the connectors using a safety clip. - Page 9 Step7. Secure the hatch the wing using M2.3x8mm screws. Step8. Position the control horn on the aileron. Use the pushrod wire as a guide to align the horn to the Step11. Attach the clevis to the control horn using servo arm.
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Page 10: Section3. Wing Strut Installation
Section3. Wing Strut Installation Section4. Main landing gear Installation Step1. Put the wing strut and center strut support in place and mark the location where the strut Step1. Attach the axle to each landing gear leg with support is against the strut. -
Page 11: Section5. Wing Installation
Step4. Use thin CA to glue two wheel pants to the Section5. Wing Installation landing gear leg. Step1. Insert two 19x800mm joiner into the wing panel. Use epoxy glue the 9x135mm wing joiner into the wing. Step5. Use four M4x16mm socket head screws and four M4 nuts to install the landing gear to the fuselage. -
Page 12: Section6. Elevator Installation
Step4. Remove the covering from the horizontal Section6. Elevator Installation stabilizer inside the line drawn in the previous step. Step1. Remove the coverings for horizontal stabilizer. Step5. Position the stabilizer and elevator on a flat surface as shown, and make sure they are in alignment with each other. - Page 13 Step7. Slide the horizontal stabilizer back into the Step10. Glue the hinges and joiner wire to the fuselage. elevator half and glue hinges to the other elevator half. Step8. Carefully check the alignment of the stabilizer to the wing to make sure A=B as shown.
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Page 14: Section7. Rudder And Tail Wheel Installation
Step3. Drill a hole in the rudder for the tail wheel Section7. Rudder and tail wheel wire. Installation Step1. Slide the fin back into the fuselage. Check the alignment of the fin to the stabilizer using a square. The fin must be 90 degrees to the stabilizer when properly aligned. -
Page 15: Section8. Elevator And Rudder Servos And Linkage Installation
Step6. Test fit the rudder to the fuselage. Apply the Section8. Elevator and Rudder Servos thin CA to the hinges. and Linkage Installation Step1. Thread two 1.8x915mm steel wires through the plastic tube. Step7. Secure the tail wheel bracket to the fuselage. - Page 16 Step4. Put the control horn in place on the elevator. Step7. Use the same methods to install the rudder Use a felt-tipped pen to mark the positions for the servo control and attach the pushrod to the control three mounting bolts.
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Page 17: Section9. Stabilizer Installation
Section9. Stabilizer Installation Step1. Install 8 fittings onto the fin, horizontal stabilizer and fuselage. Install the fittings on the horizontal stabilizer and fin using M3x16mm socket head screws and M3 locknuts. Install the fittings on the fuselage using M3x12mm self-tapping screws Step3. -
Page 18: Section10. Windows And Windscreen Installation
Section10. Windows and Windscreen Section11. Engine (DLE30) Installation Installation For more installing details, please refer to the manual of the DLE-30 engine. Step1. Use hobby scissors and a hobby knife to trim the side windows from their sheets. Step1. Install the fuel tank into the fuselage. -
Page 19: Section12. Motor Installation
Step4. Install the throttle servo, Adjust and connect Section12. Motor Installation it to the carburetor. Step1. Install the motor mount to the firewall using four M4x25mm socket head screws. Step5.Install wood 18in prop to the engine. Step2. Use four M4x25mm socket head screws, four M4 washers and four M4 locknuts to mount the motor to the motor mount. -
Page 20: Section 13: Setting Cg And Control Throws
Step4. Use four M2.3x8mm self-tapping screws to Low / Precision Rates (in degrees) and secure the cowling to the fuselage. Corresponding Exponential Elevator Low Rate: 11/16" (11.5º) Up 9/16" (10º) Down High Rate: 1/4" (19.5º) Up 1" (18º) Down Linear measurement (Inches) measured at widest part of elevator (roughly in the center). - Page 21 2015-09-14...