INSTRUCTIONS
CONTENTS Introduction 1 Features 1 Specification 1 Contents 2 Tools And Items 3 Assembly of the front landing gears 4 Assembly of horizontal tail & vertical tail and tail wheel 5 Assembly of main wings, front landing gear and propeller 6-7 Centre of Gravity 7 Pre-Flight Check 8 Flight 8-9 Tips 9 Problem Solving 10 Notes 11
INTRODUCTION Thank you for purchasing H-king’s Piper J3 Navy Cub Electric R\C airplane, the Piper J3 is a propeller airplane which is ideal for the beginners, seasoned flyer’s and scale enthusiasts. The Navy cub will perform most aerobatic manoeuvres from loops to stall turns and low slow fly by’s is the best thing about flying the Navy Cub. Made from tough EPO foam means it will handle all the bumps and repairing any damage is a breeze.
CONTENTS 1 2 3 4 5 6 7 11 1. Cowl 2. Fuselage 3. Main Wing 4. Horizontal Wing 5. Landing gear set 8 9 12 6. Vertical Wing 7. Propeller 8. Wing Rod 9. Prop Adaptor 10. Motor 2 10 13 11. Spare Parts 12. ABS plastic wing support 13.
TOOLS AND ITEMS: To assemble this airplane you will require the following tools.
ASSEMBLY OF THE MAIN LANDING GEAR: 1 2 Glue the steel wire to the landing gear fairings 3 Glue the front landing gear wire to the rear. Glue the gears parts together as shown. 4 Attach the springs to the landing gear and use heatshrink to cover the springs. 5 6 Slide the wheel onto the steel wire and ensure the wheel rotates easily on the axle. Screw the wheel chock through the wheel onto the steel axle in a clockwise direction. 7 The landing gear assembly is now complete.
ASSEMBLY OF HORIZONTAL TAIL, VERTICAL TAIL & TAIL WHEEL: 1 2 Install the control horn to the elevator using the 1.7X15mm screws provided. 3 Install the control horn to the rudder using the 1.7x15mm screws provided. Install the rudder plate into the vertical tail. 4 Install the horizontal tail onto the fuselage with screw the 2 off M3x30mm screws provided. 5 Install the vertical tail using the M3x45mm and the M3x40mm screw provided. 7 6 Assemble the tailwheel parts using a medium CA glue.
ASSEMBLY OF MAIN WINGS, FRONT LANDING GEAR AND PROPELLER: 1 2 Install the aileron control horns using the 1.7x15mm screws provided. Then attach the aileron pushrods to the 2nd hole in the servo output arms and connect to the control horns. 3 Slide the wing joining rod into both wings then secure with the screws provided. 4 5 Connect the aileron servo leads to the Y lead. Install the main wing onto the cabin top with the 2 off M3x35mm screws provided.
9 Attach the tailplane bracing struts using the supplied 2.6x20mm screws. 10 Slide the propeller onto the motor shaft, then the washer and finally screw on the domed threaded spinner using a tommy bar. CENTER OF GRAVITY C of G is 65mm from the wing leading edge. PRE-FLIGHT CHECK 1. Check wings and control surfaces for alignment and damage. Check all connections to the control surfaces, check all screws and glue joints. 2. Check the propeller, adaptor and undercarriage. 3.
5. Switch the transmitter on, then switch the receiver on. 6. Always perform a range check with your transmitter. Make sure your plane is secure to prevent damage to people and property. 7. Check plane responds properly to control inputs. 8. Re-check all your control surfaces, airframe, screws and undercarriage etc. 9. If there is no interference on the RC controls then the plane is ready to fly. FLIGHT Take-off: 1.
this keeps the tailwheel on the ground. You have now finished your first flight. Taxi your plane back holding in full up elevator and steering with the rudder. Once back in the pit area safely remove the flight battery and switch off your transmitter. TIPS 1. Train yourself with an RC flight model simulator before you fly the H-King J3 Navy Cub electric RC airplane. It will help you with coordination for when fly your model. 2.
||Motor runs backwards Servos not operating properly Difficult to trim 1. Motor/ESC connection error 1. Swap around any 2 of the 3 ESC/motor wire connections 1. The servo leads are connected to the Rx incorrectly. 1. Make sure the servo leads are connected properly. 2. The servo is damaged. 2. Replace servo. 1. Control surfaces not centered. 1. Adjust the trims on the transmitter. 2. CoG is not in the correct position. 2. Re-position the battery suggested.
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