HSD ViperJET User manual

ViperJET
75mm EDF

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 store the battery at room temperature in a dry area for best results.
• Always transport or temporarily store the battery in a temperature range of
40-120º F(5-49º C).Do not store battery or aircraft in a car or direct sun-
light.If stored in a hot car,the battery can catch fire or be damaged.
• Always charge batteries away from flammable materials.
• Always inspect the battery before charging and never charge dead or dam-
aged batteries.
• Always disconnect the battery after charging,and let the charger cool
between charges.
• Always consistently monitor the temperature of the battery pack while
charging.
• 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.
• 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 attempt to dismantle or alter the charger.
• Never allow minors under the age of 14 to charge battery packs.
•Never charge batteries in extremely hot or cold places(recommended
temperature is 40-120°F or 5-49°C)or place in direct sunlight.
Charging Warnings
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.
WARNING: Read this instruction manual entirely to become thoroughly familiar with the features of the product before
Failure to operate the product correctly can result in damage to the product or personal property and it can cause serious
injury.
operating.
This is a sophisticated hobby product.It must be operated with caution and common sense and requires some basic mechanical ability.Failure to
opera-te this product in a safe and responsible manner could result in 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 warn-ings in the manual prior to assembly,setup or use, in order to correctly operate the product and/or avoid
damage or serious injury.
14+
Not for children under 14
years.This is not a toy.
AGE RECOMMENDATON:
As the user of this product,you are solely responsible for operating it in a
man-ner 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 of control.
• Always operate your model in open spaces away from full-size vehicles,
traffic and people.
• Always carefully follow the directions and warnings for this and any optional
support equipment (chargers,rechargeable battery packs,etc.).
•
Always keep all chemical,small and electric parts out of the
reach of children.
• A lways avoid water exposure to all equipment that is not speciffically
designed for this purpose.Moisture causes damage to electronics.
• N ever place any portion of the model in your mouth as it could cause
serious injury or death.
• Never operate your model with low transmitter batteries.
• Always keep aircraft in sight and under control.
• Always use fully charged batteries.
•
Always keep the transmitter in the on state while aircraft is in use.
• Always remove batteries before disassembly.
• Always keep moving parts clean.
• Always keep parts dry.
•
Always let the parts cool before touching after use.
• Always remove batteries after use.
• Always ensure failsafe is properly set before flying .
• Never operate aircraft with damaged wiring.
• Never touch moving parts.
Safety Precautions and Warnings
NOTICE
All rights reserved by HSD for the upgrade and/or reconfiguration of products.
Thank you for purchasing from HSD. 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.

CONTENTS
Specifications
Assembl y
Throttle Range Setting
CG Location.....................
Accessories
Model Flying Precautions
Box Contents....................................................................................01
......................................................................01
....... . . . . . . . . . . ....... . . . . . . . . . . ....... . . . . . . . . . . ....... . . . . . . . . . . ....... . . 0 2
Control Horn and Servo Arm Settings..............................................03
Control Direction Test..................................................................04
Cl e v i s In s t a l la t io n .. . . . . . . . . . . . .. . . . . . . . . . . . ... . . . . . . ...............................05
Control Surface Centering.................................................................05
..................................................................05
........................................................06
..................................................................06
...............................................................................07-08
Trouble Sho ot in g...................................... .. .. ...........................09
.....................................................................10
P r e - F l i g h t Ch e c k s . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 1 0
Installation Of Battery

01
Box Contents
1100mm
969mm
4S 1250g
6S 1450g
Specifications
Brushless Outrunner Motor, 3060/2600KV(4S)
3060/2000KV(6S)
HOBBYWING 60A Pro Brushless ESC(2-6S)
Servos:（twin bearings,metal shell and digital
servos)9g*6pcs
Battery:4S 2200mAh-3300mAh 40C Li-Po
6S 2200mAh-3300mAh 40C Li-Po
Radio System: 2.4GHz 4CH
Transmitter and Receiver
75mmEDF
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 of your Viper is completed.
Now perform a final check on all screws,
bolts and components,ensuring all are secure
and firmly in place.
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

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 to the right shows the factory settings for the control horns and servo arms.Fly the aircraft at factory settings before
making changes.
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 Tests
After binding a transmitter to the aircraft receiver,set the trims and
center the control surfaces.sub-trims to 0,then adjust the clevises to
Move 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
Elevator
Up Elevator
Command
Down
Elevator
Command
Aileron
Stick Right
Stick Left
Rudder
Stick Right
Stick Left
Small
Big
the Throttle

05
Control Surface Centering
centered.If the control surfaces are not centered, mechanically center the
control surfaces by adjusting the linkages.
1.
2.
3.
4.
5.
6.
Clevis Installation
After assembly and transmitter setup,verify that the control surfaces are
Throttle range setting
(Throttle range should be reset whenever a new transmitter is being used)
With the flaps switch in the up position,flaps should be adjusted so they are
even with the ailerons and/or the root of the wing.
If adjustments are required, turn the ball buckle on the pushrod to
change the length of the linkage between the servo arm and the
control horn. After binding a transmitter to the aircraft receiver, set
the trims and sub-trims to 0, then adjust the ball buckles as necessary
to center the control surfaces.
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 been confirmed.
Step 4:After the 'beep-beep' tone is emitted, move the throttle stick
back down to the lowest position (0%). You will hear a set of
initialization beeps that register the number of cells in the battery.
Step 5:A final, long beep tone will be emitted 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.
* 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.

06
CG LOCATION
Installation of battery:
-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

07
Accessories
HSDA75-T01 HSDA75-T02 HSDA75-T03 HSDA75-T04
H S D A 7 5 - T 0 5 H S D A 7 5 - T 0 1 1 3 5 H S D - T B 0 2 H S D - B B 0 1
H S D - B A 0 2
HSD-TD01
H S D - T D 0 2 H S D A 7 5 - T 0 6 H S D - M 0 2 H S D A 7 5 - T A 0 1
HSD-BA01 H S D - B C 0 1 H S D - B C 0 2
HSD-BC03 HSD-BC04 HSD-TM01

Accessories
H S D - T A 0 1 H S D - T A 0 2 H S D - H E 0 1 H S D - T B 0 1
H S D - T A 0 3 H S D A 7 5 - J 0 4 H S D A 7 5 - K 0 2 HSDA75-K01
HSDA75-K03 HSDA75-D01 H S D A 7 5 - D 0 2
08
H S D A 7 5 - G 0 2
HSDA75-G01

09
Problem Cause Solution
Motor does
not turn
1.Battery is not fully charged
2.Transmitter battery low
3.Motors not connected
4.The motor is damaged
5.Reciever is not bound to Tx
6.ESC in set-up mode
Control Surfaces
are not responding
to stick input
Model is flying
erratically
1.The control surfaces are not centered
2.The control surfaces are severely off
center
3.Center of Gravity (CG) is not in the
correct position.
Model does not
climb well
1.The 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
1.Transmitter or receiver
(if applicable) power is low
1. Charge or replace any batteries used
on the transmitter and receiver (if
applicable)
Model moves
backwards
1.Locate the three (3) connections between
the motor and ESC, disconnect two (2) of
the three (3) and swap their places for
proper response
2.Install a full charged battery
3.Check for connection
ESC and
between the
4.Replace motor
5.Consult Radio manual and
through bind procedure again
go
6.Hold model and move
postion then back down to idle
throttle to full
1 .Both ESC and motor are not
establishing a proper response
range
1.The servo lead may be connected
to the receiver incorrectly
2.The servo is damaged
1.Make sure the servo leads are properly
connected to the receiver
2.Replace the servo
1.Make trim adjustments as necessary
on the transmitter if the issue is not serious
2.Make manual adjustments as necessary
to the surface control linkages
3.Re-position the Li-Po battery as necessary
to achieve a balanced CG.
1.Re-charge the battery within the
specified charge time
2.Charge the surface direction via the
'reverse' function on the transmitter
3.Re-position the Li-Po battery as
necessary to achieve a balanced CG
1. Charge the batteries

- 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 canc
and this risks damage to the model.
ause harm to yourself and/others
- This model is recommended for children no younger than 14 years old. All children,
always be supervised by a capable and responsible adult when operating this model.
not matter what age, should
- Always unplug your model battery when not in use.Never leave the battery installed in the model.
- Please remember to keep clear of the propeller at all times when your flight battery is connected.
- 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.
- 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 full size air traffic.
MODEL FLYING PRECAUTIONS
PRE-FLIGHT CHECKS
1.
Always range check your model before any flight (especially when flying a new
your radio manufacturer's guidelines to perform this check.
model for the first time). Follow
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.
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.
4.
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(626) 629-8243
WWW.bananaHobby.com