General Hobby Ultimate User manual

PIPER J-3 CUB
Specifications
Wing Span 55in/1400mm
WingArea 1023sq in/66sq dm
Flying Weight 9.25 lbs/4200g
Fuselage Length 59.5in/1512mm
Engine 91(2c) 120(4c)
Radio 4 channels 6servos
Warning!This model is not a toy.
It is designed for maximum performance.Please seek advice if one us not familiar
with this kind of engine powered precision model. Operating this model without
prior preparation may cause injuries .Remember, safety is the most important
thing.Always keep this instruction manual at hand for quick reference.
ULTIMATE

BEFORE YOU BEGIN ------------------------------------------------- P.2
PARTS LIST ------------------------------------------------------------- P.2
ASSEMBLY --------------------------------------------------------- P3-P10
SAFETY PRECAUTIONS -------------------------------------------- P10
REQUIRED FOROPERATION (Purchase separately!)
2
3
4
5
1
Helm
Propeller
4 Channel R/CTransmitter
4 Channel MiniR/C receiver
Sharp Hobby Knife Needle Nose Pliers Screw Driver
TOOLS REQUIRED (Purchase separately!)
6Battery of receiver
Motor
Scissors Wire Cutters Awl
6V 1300mAh
PIPER J-3 CUB
INDEX
REQUIRED FOR OPERATION --------------------------------- P.1
TOOLS REQUIRED ----------------------------------------------- P.1
1

Symbols used throughout this instruction manual, comprise:
3.
Pay close attentionhere
Apply P.A Glue
Apply C.AGlue
Assemble left andright
sides the sameway
Drill holes withthe specified
diameter (here: 2mm)
Ensure smooth non-binding
movement while assembling
Cut off shaded portion
Apply A.B Glue Purchase separately
2mm
A
B
P.A
C.A
Parts List
1.Read through the manual before you begin,so you will have an overall idea of what to do.
2.Check all parts.If you find any defective or missing parts contact your local dealer.Please DRY
FIT and check for defective for all parts that will require CA or Epoxy for final assembly.Any
parts you find to be defective after the gluing process may be difficult to remove for warranty
replacement.The manufacturer will replace any defective parts,but will be difficult to extend to
the good parte that are good before gluing to defective parts during assembly.
BEFORE YOU BEGIN
2

ASSEMBLY
Main Wing
Aileron servo
Peel off shaded portion covering film,
please according to the diagram.
P.A
P.A
Wing Struts
Aileron servo
Please drill 2mmpilot holes forthe model tri-horn.When
assembling the servo ,please lenth the leads and go through
the hole behind,anduse the PM2 25mm screw assebled
the tri-horn,then use the PWA2 12mm screw to install the
ply wood.
Aileron servo
3.5mm
2mm
Upper(Bottom View)
CABANE MOUNT
A
B
Please drill the3.5mm or littlebig
hole,and insert thescrew into.then
apply the P.A clue .
3

Insert the rudder into the end of the fusekage,
make sure vertical fin and stabilizer are at
right angles.
P.A
P.A
Stabilizer/Elevator
Vertical Fin/Rudder
Tail Landing Gear
2mm
C.A
C.A
Insert the elevator into the hole at the end of the fuselage ,
according to thediagram.
Wheel 35mm
PA3 12mm
2mm collar
4

3mm
Main Landing Gear Please assemble the main landing
gear according tothe diagram.
Wheel 70mm
In the assembly,use the
4mm collar,setscrew
3mm and thewasher 3mm
Nut 8mm
Use the 4 60mm nylon screw to keep the wing
Fuel Tank
Fuel tank
8mm Nut
Set screw 3mm
Collar 4mm
PM 3 15mm
PM 3 15mm
5

Illustration is for inverted mounting.You can mount the engine upright or side ways
simply by rotation the engine mount.Thrust angles will not be affacted.
Engine
155mm/6.1 in
Please install the engine according
to the diagram
Screw KM 4 30mm/captive nut 4mm
4mm
2mm
Elevator and Rudder Pushrod
Please drill 2mm pilot hole for
tri-horn.please assemble the
elevator and the rudder pushrod
according to thediagram.
Rudder pushrod
Elevator pushrod
Please assemble two tri-horn for
the elevator and the rudder servo
seperately
6

Install and arrangethe servo asshown in thediagram.
Radio Equipment
Elevate servo
Rudder servo
Cowling&Spinner
2mm
2mm
3.5mm
Spinner 70mm
Throttle servo
Please settle thecanopy like thediagram
Main wing strut First assemble the screw for keeping
the wing.Please settle the strut
according to thediagram.
Round head screw3 14mm
PWA 2 8mm
PWA 2 12mm
7

Main wing
12
34
56
78
Please assemble themain wing tri-hornlike the diagrams
Make the pushrodlike 7 ,then put into
the plastic tubelike the diagram.
Put the tri-horn into the plastic tube
Complete the step2 The tri-horn must assemble on the
side of the aileron.
Insert the pushrod into the
tri-horn on the upper wing
Complete the step5
Connect the pushrodbetween the upper
and lower wing Complete the assembly
8

B
Adjust the wing and fuselage configuration as shown in the diagrams.
Wing Setting
Main wing
Round head screw3 8mm
B
CC
DD
EE= E
E
BBB
=
CC
=
DD
=
9
AAA
=
A

Warning!
Important Safety Precautions
#First time flyer should never fly by himself/herself. Assistance from experienced
flyer is absolutely necessary.
#Pre-flight adjustment must be done before flying ,it is very dangerous to fly a badly
pre-adjusted aircraft.
#Ultimate is specially designed to be powered by 2C 0.60 or 4C 0.70 engine,
using a more powerful engine does not mean better performance .In fact, over powered
engine may cause severe damage and injuries.
#Make sure the air field is spacious ,never fly the plane too close to people and never
get too close to a running propeller.
#If you find wrinkls on the covering as a result of weather changes ,you can use hot
iron to remove the wrinkles. Please begin with lower temperature setting and
gradually raise the temperature until the wrinkles are gone. Too hot an iron may
damage the covering.
#Check and re-tighten up all factory assembled screws ,use thread locker if applicable.
Adjust the controlthrows as shownin
the diagram.These throws are good for
general flying.You can adjust according
to your personalpreference.
C.G. The ideal C.G.position is 106mm(4.17in)behind
the leading edge measured at top wing centre line.
In order to obtain the C.G.specified ,add weight to
the fuselage or move the battery position.Check the
C.G.before flying.
50mm
50mm
80mm
80mm
15mm
15mm
106mm/4.17 in
Elevator
Rudder
Ailerons
Control Throws
10