FMS J-3 Cub Operating Manual
Specifications
Wingspan.................................1030mm (40.5 in)
Length......................................750 mm (29.5 in)
Weight ...................................... 540 g (19. 0 oz )
Wing Area...................................15 dm (233 in )
2 2
Wing Loa d .......................35.9 g/dm (0.08 oz/in )
2 2
RC System.........................................4 Channel
1030mm J-3 Cub
FMS MODEL Friendly Reminder
This is a sophisticated hobby product and NOT a toy. It must be operated with caution and common sense
and requires some basic mechanical ability. Failure to operate this Product in a safe and responsible
mannercould result in injury or damage to the product or other property. This product is not intended for use by
children without direct adult supervision.
This manual contains instructions fo
r safety, operation and maintenance. It is essential to read and follow all
the instructions and warnings in this manual prior to assembly, setup, or use, in order to operatecorrectly and
avoid damage or serious injury.
property
and cause serious injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product
before operating. Failure to operate the product correc
tly can result in damage to the product,personal
!
Safety Precautions and Warnings
As the user of this product, you are solely responsible for operating in a manner that does not endanger
yourself and others or result in damage to the product or the property of others. This model is controlled by a
radio signal subject to interference from many sources outside your control.This interference cancause
momentary loss of control so it is advisable to
alwayskeep a safe distance in all directionsaround your model,
as this margin will help avoid collisions or injury.
Age Recommendation: Not for children under 14years. This is not a toy.
Never operate your model with low transmitter batteries.
ЬAlways operate your model in an open area away from cars, traffic or people.
Avoid operating your model in the street where injury or damage can occur.
Never operate the model in the street or in populated areas for any reason.
Carefully follow the directions and warnings for this and any optional support equipment (chargers,battery
rechargeable packs, etc.) you use.
Keep all chemicals, small parts and anything electrical out of the reach of children.
Moisture causes damage to electronics. Avoid water exposure to all equipment not specifica
lly designed and
protected for this purpose.
Never lick or place any portion of your model in your mouth as it could cause serious injury or even death.
WARNING!
Thank you for purchasing a FMS MODEL product. Our
goal is to provide high quality products and offer great
customer service. If you have any problems with your
product or want to offer suggestions for improvements
(such as plane design, packaging, building instructions,
etc.) please feel free to contact us at
info@fmsmodel.com
Table of contents
1
Table of contents..................................................... 1
Kit contents .......................................................... 2
Fuselage/tail assembly .............................................. 3
Final assembly and set-up procedures ............................ 8
The transmitter and model set up .................................. 9
Check the control throws .......................................... 10
Spare parts list content ............................................ 11
Flight control .......................................................12
Assemble the plane .................................................13
Before the model flying .............................................14
Flying course ........................................................15
Troubleshooting .....................................................16
Spare parts list content .............................................17
Charging the Flight Battery .........................................19
.......................................................20
ESC instruction
01
2
Kit Contents
2
3 5 6 7
41
1. The fuselage assembly (With the motor, the canopy, the electronic parts, ESC)
2. Main wing ( With all electric device installed)
3. Horizontal stabilizer with elevator joiner installed
4. landing gear set
5. Propeller
6. Spare parts bag
7. wires and screw driver
3
Fuselage/tail assembly
1.Place the ball-linked control horn on the aileron surface. Make sure that the orientation of the
ball-link is placed as shown on the picture below. (Fig.1)
2.Once aligned, secure the control horn on the aileron surface with the included screws.(Fig.2)
3.Attach the wing-brace to the attachment points on the wing. (Fig.3 and 4)
4.Connect the pushrods to the ball-links; make sure that the pushrod goes through the second hole
of the servo arm. Finish by attaching the plastic retainers so that the pushrod does not detach from
the servo arm. (Fig. 5-8)
4
5.Repeat steps 1-4 for the opposing wing.(fig.9)
6.Insert the horizontal-stabilizer as shown in the picture below. Check that the control horn and
ball-link are located on the starboard horizontal stabilizer (right of the fuselage). (fig.10-11)
5
3$;
7.Install the braces that hold the horizontal stabilizer in place. (fig. 12-13)
9.Please secure the pushrod to the ball link while ensuring that the elevator surface is level with the
rest of the horizontal stabilizer; if not, please adjust the length of the linkage accordingly. (fig. 15)
8.Secure the horizontal stabilizer by attaching PA2.0x12 screws to the top of the horizontal stabilizer.
(fig.14)
10.Repeat step 9 for the rudder push rod and control horn. (fig. 16)
6
30;
11.Open the electronics hatch by loosening the screw shown on the picture below (fig. 17-18)
14.Attach the wing to the fuselage by sliding the wing into the top of the clear plastic windshield.
(fig.21)
15.Attach the wing-bolt to the top of the fuselage. (fig.22) (PM3x16/2pcs)
12.Route the Y-harness into the electronics hatch (Sequence: CH1-Aileron, CH2-Elevator,
CH3-Throttle, CH4- Rudder); secure the electronics bay by tightening the screw (fig.19)
13.Connect the Y-harness with the 2 aileron servo leads on the wing.(fig.20)
7
30;
18.Insert the propeller onto the motor hub; make sure that the molded letters on the propellers face
outwards, and then attach and tighten the prop nut with the included screwdriver. (fig.26-28)
16.Align the wing-brace to the bottom of the fuselage. (fig.23)
17.Align and secure the landing gear to the hard points on the fuselage; secure the wing-brace to
the bottom of the fuselage. (fig. 24-25) (PA 2.6x10/2pcs)
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