HSD ViperJET User manual

ViperJET
75mm EDF

WARNING: Read this instruction manual entirely to become thoroughly familiar with the features of the product before
operating.
Failure to operate the product correctly can result in damage to the product or personal property and it can cause serious injury.
This is a sophisticated hobby product.It must be operated with caution, common sense, and requires some basic mechanical ability.Failure to
operate this product in a safe and responsible manner could result in physical injury or damage to the product or other property.This product is
not intended for use by children without direct adult supervision.Do not use with incompatible components or alter this product in any way
contrary to the instructions provided by HSD HOBBY LTD. This manual contains instructions for safety,operation and maintenance.It is
essential to read and follow all the instructions and warnings in the manual prior to assembly,setup or use, in order to correctly operate the
product and/or avoid damage or serious injury.
14+
AGE RECOMMENDATON:
Not for children under 14 years
of age .This is not a toy.
As the user of this product, you are solely responsible for operating it in a manner that does not endanger yourself and/or others or result in damage

to the product and property of others.
Always keep a safe distance, in all directions, around your model to avoid collisions or injury.This model is controlled by a radio signal subject to interference from
many sources outside of your control; interference can cause momentary loss o

f control.
Always operate your model in open spaces away from full-size vehicles, traffic and people

.
Always carefully follow directions and warnings for this model, and any optional support e

quipment (i.e., chargers, rechargeable battery packs, etc).

Always let parts cool down, after use, before touching or to use again.

Always keep all chemical, small and electric parts, out of children's reach.

Always avoid water exposure to all equipment that is not specifically designed for this purpose as moisture causes damage to electrics.

Never operate your model with low transmitter batteries.

Always keep aircraft in sight and under control.

Always keep the transmitter on for as long as the aircraft is in use.

Always remove batteries after use.

For your safety, do not touch moving parts.

Never operate aircraft with damaged wires.
Always ensure failsafe is properly set before flying.
Charging Warnings
CAUTION:
All instructions and warnings must be followed exactly. Mishandling of Li-Po batteries can result in a fire,personal injury,and/or
property damage.
• By handling,charging , or using the included Li-Po battery,you assume all risks associated with lithium batteries.
•
If,
at any time, the battery begins to balloon or swell, discontinue use
immediately. If charging or discharging, discontinue and disconnect.
Continuing to use, charge
,
or discharge a battery that is ballooning or swelling can result in a fire.
• Always disconnect the battery after charging,and let the charger cool between charges.
• Always consistently monitor the temperature of the battery pack while charging.
• Never attempt to dismantle or alter the charger.
• Never allow minors under the age of 14 to charge battery packs.
• Never discharge Li-Po cells to below 3V under load.
• Never cover warning labels with hook and loop strips.
• Never leave charging batteries unattended.
• Never charge batteries over recommended levels.
• Never charge batteries in extremely hot or cold places.
• Do not store battery or aircraft in a car or direct sunlight. If stored in a hot car,the battery can catch fire or be damaged.
• Always store the battery at room temperature in a dry area for best results.
• ONLY USE A CHARGER SPECIFICALLY DESIGNED TO CHARGE LI-PO BATTERIES. Failure to charge the battery with a compatible
charger may cause fire, resulting in personal injury and/or property damage.
.
Safety Precautions and Warnings
NOTICE
Thank you for purchasing this HSD product . Please read this manual carefully before operating this plane. We hope this manual is useful
in guiding you through the installation and adjustment of the plane so that you may successfully fly it.
Each product from HSD has unique functions that users will need to fully grasp step by step as you will complete the assembly. It is necessary to
assemble and test the product strictly in accordance with HSD's standards.
All rights reserved by HSD for the upgrade and/or reconfiguration of products.
Meaning of Special Language:
The following terms are used throughout the product manual to indicate various levels of potential harm when operating this product:
NOTICE: If procedures are not properly followed, the risk of physical property damage AND a possibility of serious injury are likely.
CAUTION: If procedures are not properly followed, the risk of physical property damage AND a possibility of serious injury are likely.
WARNING: If procedures are not properly followed, the risk of physical property damage AND a possibility of serious injury are likely.

CONTENTS
Specifications
Assembly
Box Content
Control Horn and Servo Arm Settings
Control Direction Test
Clevis Installation
Control Surface Centering
Accessories
Troubleshooting
Flight Precaution
Pre-flight Check
Battery Installation
1
1
2
3
4
5
5
Throttle Range Setting
CG Configuration 6
6
7
9
10
10
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01
Box Contents
1100mm
969mm
4S 1250g
6S 1450g
Specifications
Brushless Outrunner Motor 3060/2600KV (4S)
3060/2000KV (6S)
Hobbywing 60A Pro BrushlessESC (2-6S)
Six analog 9g servos
Battery:
4S 2200mAh-3300mAh 40C Li-Po
6S 2200mAh-3300mAh 40C Li-Po
Radio System: 2.4GHz 4CH
Transmitter and Receiver
75mm EDF
Installed
Installed
Installed
Required to Complete
Required to Complete
Attention
EDF jets require Li-PO batteries with a high discharge rating (C rating) for increased safety and
optimal performance. We recommend using Li-Po batteries with a minimum of 40C or above.

02
Assembly
4
2
5
3
Assembly is now complete.
and bolts are secure and firmly in
place before proceeding to the next pages.
1
PA 3*15MM 1pcs
PA 3*18MM 1pcs
PA 2.6*6MM 1pcs
PA 3*5MM 2pcs
PA 2.6*6MM 2pcs M3*3MM 1pcs
PA 2.6*6MM 4pcs
Fixed with screws
Connect the servo link and fix the screws
Connect the servo link and fix the screws
Make sure that all screws
6

03
Control Horn and Servo Arm Settings
After flying y ou may choose to adjust the linkage positions for the desired control response.
See the lower table.
The table below shows the factory settings for the control horns and servo arms. Fly the aircraft at
factory settings before
making any modifications.
.
Horns Arms
Elevator
Rudder
Ailerons
Increased Thrust Control Decreased Thrust Control
The Rudder
The front
wheel steering
The Rudder The front
wheel steering

04
Control Direction Test
After binding a transmitter
.
the controls on the transmitter to make sure the aircraft control surfaces move in the proper direction. .
Assemble the aircraft and bind your transmitter to the receiver before performing this test.
Transmitter
Command Aircraft Reaction
ElevatorAileron
Move right
stick right
stick left
Rudder
Move left
stick right
Move left
stick left
Low
Full
Move left
stick
up/down
to the aircraft receiver, set the trims and sub-trims to 0, then adjust the clevises to center the control surfaces. Move
Move right
Move right
stick down
Move right
stick up
Throttle

05
1.
2.
3.
4.
5.
6.
Throttle range setting
(Throttle range should be reset whenever a new transmitter is being used)
Step 1: Switch on the transmitter and move the throttle stick to 100% (wide-open throttle)
Step 2: Connect the battery pack to the ESC, and wait about 2 seconds
Step 3:
A
'beep-beep' tone will emit, this means the highest point in the throttle control range has
has been confirmed
Step 4: After the 'beep-beep' tone is emitted, move the throttle stick back down to the lowest
position (0%). You will then hear a set of initialization beeps that register the number of cells in
the battery
Step 5: A final long beep tone should sound, meaning that the lowest point of the throttle range
has been confirmed. This means the throttle control has been initialized properly and is ready
for use
Clevis Installation
*
Adjust the push rod and clevis as necessary
*Carefully adjust the clevis so that it creates a centered
surface when attached to the control horn.
Control Surface Centering
*After assembly and transmitter setup, verify that the
contro
.
l surfaces are centered. If the control surfaces
are not centered, manually cen
.
ter the control surfaces by
adjusting the linkages.
*With the flaps switch in the up position, flaps should be
adjusted so that they are even with the ailerons/root of
the wing.
*If adjustments are required, turn the ball buckle on the
push rode to change the length of the linkage between
the servo arm and the control horn. After binding the
transmitter to the receiver, set the trim and sub-trims to
0, then adjust the ball buckles as necessary to center
the control surfaces.

06
CG Location
Battery Installation
-10mm
+10mm
-10mm
+10mm
-10mm
+10mm
Recommended battery location for
4S 3300mAh (350g) Li-Po Recommended battery location for 6S 3300mAh (550g) Li-Po
CG
85MM
Make sure the center of gravity (CG) is as indicated in the following diagram:

07
Accessories
HSDA75-T01 HSDA75-T02 HSDA75-T03 HSDA75-T04
HSDA75-T05 HSDA75-T01135 HSD-TB02
HSD-BB01
HSD-BA02
HSD-TD01
HSD-TD02 HSDA75-T06 HSD-M02 HSDA75-TA01
HSD-BA01 HSD-BC01
HSD-BC02
HSD-BC03 HSD-BC04 HSD-TM01

Accessories continued
HSD-TA01
HSD-TA02 HSD-HE01
HSD-TB01
HSD-TA03
HSDA75-J04
HSDA75-K02
HSDA75-K01
HSDA75-K03
HSDA75-D01
HSDA75-D02
08
HSDA75-G02
HSDA75-G01

09
Probable Causes
Problem
Control surfaces
are not
responding
to stick input
Model is flying
erratically
Model does
not climb well
1. Battery is not fully charged
2. Elevator surface response is
reversed
3. CG is too far back, causing a
tail-heavy airframe
Limited radio
range Transmitter or receiver
power is low
Charge or replace any batteries
used on the transmitter and
receiver (if applicable)
Model moves
backwards
Locate the three (3) connections
between the motor and ESC,
disconnect two (2) of the three (3)
and swap their places for proper
response
1. Charge the battery
2. Install fresh AA batteries
3.
Check for connection between
the ESC and motor
4.
Replace motor
5. Consult radio manual and
go
through bind procedure
6. Hold model and move throttle to
full position then back down to idle
Both ESC and motor are not
establishing a proper
response range
1. Servo lead may be connected
to the receiver incorrectly
2. The servo is damaged
1. Make sure servo leads are
properly connected to receiver
2. Replace the servo
1. Recharge the battery within the
specified charge time
2. Charge the surface direction
via the reverse function on the
transmitter
3. Reposition the Li-Po battery as
necessary to achieve a
balanced CG
1. Make trim adjustments as
necessary on transmitter
2. Make manual adjustments as
necessary to the surface
control linkages
3. Reposition the battery as
necessary to achieve CG
Motor does
not run
1. Battery is not fully charged
2. Transmitter battery is low
3. Motor is not connected
4. Motor is damaged
5. Receiver not bound to the
transmitter
6. ESC needs to be calibrated
Solutions
1. Control surfaces are not centered
2. Control surfaces are severely
off-centered
3. Center of gravity (CG) not in the
correct position
Troubleshooting


Model Flying Precautions
Select your flight area carefully. Always choose an open space that is unobstructed by trees and/or buildings
and away from crowded area.Avoid flying in area with roads,electricity/telephone poles or wires and water

nearby or within close proximity to air traffic.
Do not fly this model in poor weather, high winds, low visibility, extreme
temperatures, rain and storms

.
Never attempt to catch this model whilst in flight.Even a slow moving model cause harm to yourself and to

others. This also poses a risk in damage to this model.
This model is recommended for children no younger than 14 years old.All children,no matter what age,

should always be supervised by a capable and responsible adult when operating this model.
Always unplug your model battery when not in use.

Never leave the battery installed in the mode l .
Please remember to keep clear of the propeller at all times when your flight battery is
c

onnected.
Before flying,

always turn on your transmitter first then plug your flight battery into the model.
After flying,

always unplug your battery first then turn off your radio transmitter.
Exercise caution when charging your batteries and follow your battery manufacturer's safety guideline when
doing so.
Pre-flight Checks
1.
Always perform a range check before any flight (especially when flying a new model for the first
time). Follow your radio manufacturer's guidelines to perform this check.
2.
Check that all screw/bolts and mounting points are firmly secured, including control horns and
clevises.
3.
Only fly with fully charged batteries (both in your radio and model). Failure to do so could result in
loss of control, damage to the model and/or persons/property around you. Check that your batteries are
fully charged.
4.
With the model powered on (transmitter on first, then receiver/model) check that all surfaces are
free from damage/obstructions, moving freely in the correct directions with stick input.
5.
Inspect the model and prop for any damage that may have occurred during transit and listen for any
unusual sounds from the electronics when powered on. If in doubt, do not fly.
6.
If this is your first flight with the model double check that the CG is at the correct position. If not,
adjust the battery
position inside your model accordingly.
7.
If you are an inexperienced model pilot, seek the assistance of an experienced pilot to perform these
final checks and to test fly the model for you.

ViperJET
75mm EDF
Distributed by:
Banana Hobby
California, USA
Call or Text [phone]
www.BananaHobby.com