Pilot Communications Viper Jet 73" User manual

Viper Jet 73”
USER MANUAL
WINGSPAN:72.8” (1850mm)
LENGTH:77.1”(1960mm)

Introduction
Warrant
!All Pilot-RC products are guaranteed against defects for 30 days of receiving your airplane. This
warranty is limited to construction or production defects in both material and workmanship , it does
not cover any component parts damaged through use or modification .
!The manufacture cannot supervise the assembly, operation or maintenance, and is not
responsible for radio malfunctions. Please ensure your radio system is in good condition. We are
not responsible for any accident or damage while using this product. It is impossible to determine
for certain whether crash damage was the result of improper installation of our products, a radio
system failure, or pilot error. Model airplane owners use our products at their own risk.
!Pilot-RC will not be liable for any costs, unless agreed and proved beyond doubt the failure was
due to faulty materials or fabrication. Any agreed cost will not exceed the cost of the airframe and
not include engine, radio equipment or third party claims.
!Should you wish to return a product or receive replacement parts, all shipping cost must be paid
by the customer.
Attention
!1. Do not regard this plane as a toy!
!2. To ensure safety, please read the instruction manual thoroughly before assembly.
!3. Building and operating an RC Plane of this nature
requires previous experience and competence to an experienced level. This plane is not for a
beginner!
!4. If you are in doubt have an experienced pilot at hand. Diligent practicing and correct guidance
is essential, accidents can cause bodily harm and property damage.
!5. Seek assistance from an experienced person or airplane model clubs in assembly, operation
and maintenance to ensure successful training.
!6. Fly only in a registered RC model club airfield that is approved by your local Academy of
Model Aeronautics (AMA).
"
!Pilot-RC has the right to revise the plane, the instructions and the limited warranty without notice.
If you have any problems and questions please contact Pilot –RC：
Email: [email protected] , [email protected]
Phone:[phone]
FAX: [phone]
Address: No.34, Chengnan Er Road , Zhongshan city, 528400, Guangdong Province, China
!Thank you for purchasing our Viper 73”Jet plane. we strive to achieve a good quality quick build
ARF aircraft .
It requires the least amount of assembly of any ARF kit to obtain the maximum performance.
!Both the design and manufacturing have been undertaken to the highest standards, using best
quality hardware, covering, wood & glue during factory construction stage.
!By optimal weight and balance along with reliable construction, you will find this plane ideal for
flying.
We hope that every effort and service we offer will, in turn, give you confidence using PILOT
Models.
!Have a wonderful time flying your aircraft in a suitable safe space!

Install kit contents
Install kit contents:
（Some contents like fuel tank etc… has already installed in fuselage）
Aluminum tube：
Landing gear module(optional):
Landing gear
Pilot landing gear controller

Accessories pack includes：
Hexagon screws in metric system(SHCS)
Tapping screws
Metric Allen Wrench
Push rot wrench
V teeth steel wire
Push rot
Wring clamp
Gasket
Battery bandage
Oil nipple suit
Extension cord
Crowbar
(Some of accessories like screw/cord etc… isn’t in this accessories pack)
Install kit contents
Accessories pack：

Servo module(optional):
Servo:
PW20AH 4
PY12AH 5
Servo arm:
Pilot Futaba aluminum alloy 0.8” 1
Pilot Futaba aluminum alloy 1.2” 6
Install kit contents
Other Accessories Need To Complete:
Epoxy Adhesives
Cyanocrylate adhesives
X-Acto and Saw knives
Sandpaper
Thread lock
Aircraft stand or support

Landing gear assembly
1: Install the servo to the nose landing gear.
2: Install the servo arm and the push rod. Adjust it to make sure the plane can go
straight approx. You still can adjust by radio after install it.

3: Place the front gear on the support, adjust it to the correct
position, and then lock it on the 4 reserved mounting holes with
screws.
Landing gear assembly
4. Before locking the screw, please make sure nothing gets stuck
when opening and closing.

Landing gear assembly - nose
After the installation，Carefully arrange the nose gear retract wire lead and the
steering wire as well
Install the nose retract gear to the
fuselage.

Landing gear assembly - main
4. Place the main landing gear in a suitable position and lock it with M4*20
woodworking screws. Before locking the screw, please make sure nothing gets stuck
when opening and closing.

Wing Servo/Flaps Assembly
1.The control horns are pre-installed at the factory, ready for use. Screw the servo to
the servo plate then install the servo arm on to the servo, making sure that this is
centred
2.Place the servo over the servo plate making sure that the arm moves freely
within the provided slot, and mark out the placement of the four screw holes. drill
out the four holes in the plate, then securely screw the servo to the inside of the
plate using the metal screws provided

Wing Servo/Flaps Assembly
Aileron servo / Flaps servo / Gear installed
Power cables for landing gear, flaps, ailerons and navigation
lights are led out from the inside of the wing.

Elevator/ Rudder Servo Assembly
1.Rudder servo assembly Insert the servo into the precut servo mount，The
rudder servo assembly inserts the servo device into the precut
servo bracket. The screw is fixed in the same way as the
aileron servo
machine is installed.

Elevator/ Rudder Servo Assembly
Next is the elevators
1.Put in the servo to the precut slot in
the elevator.
2.Screw the servo in place, and then
install the servo arm on to the servo,
making sure that this is centred.

Servo Wire Arrangements
Fixed nozzle.
Fixing of engine

Tank Arrangement
The 73” Viper use PilotRC 2000ml oil tank.
Anti-bubble oiltank:250ml

To arrange the fuel tank, connect all the oil tube(or you can
connect it later), and stick the Velcro stick on the tank support
frame. Also, you need stick the Velcro stick on the fuel tank, to
arrange the tank on the support frame, use Velcro stick tape to
straining the tank.
Fuel Tank Installation

Fuel Tank Installation

Flying Setting
Flaps:
25mm for take off
57mm for landing.
CG: The CG is 185mm from the front leading edge on the root of
the wing.
Aileron: 9mm
Rudder:17mm
Elevator: 15mm

Flight Preparation
■Make sure you have the right model programmed into your transmitter
■Check the direction of each surface not and also right before you take off .
■Remember nothing wrong on the ground ever improves in the air
■Check the air plane with the engine running and do a range check with
■your body between you and the plane at least 150 feet.
■Check your battery voltage after each flight, in case one servo is draining your
battery
■Recheck all screws ,horns and linkages for slop after your maiden fight and
check for damage if you made a bad landing you first time
■Have an experienced pilot fly it for you the first time if you have any doubts in
your mind about the maiden flight
■Take a break after you first flight and let the adrenaline burned off by bragging to
your fellow members how good it flies
■Fly low and at a medium speed on your first few flight
■Listen to your engine run and have an observer with you to remember what you
talked about during the flight or if you get into trouble . Always balance your props,
vibration is a killer.
■Remember nose heavy airplanes fly all the time, tail heavy airplanes fly only
once. Be on the CG!
■Flying two mistakes: high in the beginning and not close to people, planes or
runways. Being a center of the runway hog does not endear you to many modelers.
Double Check
Double check that all screws are installed, all components tightly secured, batteries
and or fuel tank are full, all surfaces are working in the correct directions, balance is
correct and range test passed before performing your maiden flight.
WE WISH YOU A SUCCESSFUL MAIDEN AND MANY HAPPY FLIGHTS WITH
YOUR NEW MODEL
Tony Tan, Pilot-RC

Address: No.34,!Chengnan!Er!Road, Zhongshan city,
528455, Guangdong Province, China
Web: www.pilot-rc.com
Email: [email protected], [e-mail]
Tel: [phone] FAX: [phone]
Zhongshan Pilot Model Aircraft Product Ltd