E-FLITE BLADE CX2 User manual

Specifications
Length.......................16.42in(417mm)
Height .......................7.17in(182mm)
Main Rotor Diameter . . . . . . . . . . . . . 13.60 in (345mm)
Weight RTF w/Battery . . . . . . . . . . . . 8.0 oz (227 g)
Main Motor . . . . . . . . . . . . . . . . . . . . 180 (2 installed)
Battery . . . . . . . . . . . . . . . . . . . . . . . 7.4V 800mAh Li-Po (included)
Transmitter . . . . . . . . . . . . . . . . . . . . 2.4GHz DSM 5-Channel (included)
On-Board Electronics . . . . . . . . . . . . . 4-in-1 Receiver/Mixer/ESC/Gyro (installed)
Servos . . . . . . . . . . . . . . . . . . . . . . . S60 Super Sub-Micro (2 installed)

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Table of Contents
Specifications............................................................................................................................................. 1
Introduction................................................................................................................................................ 3
Warning ..................................................................................................................................................... 3
Note on Lithium Polymer Batteries ............................................................................................................... 3
Warranty Period.......................................................................................................................................... 3
Limited Warranty ........................................................................................................................................ 3
Damage Limits ........................................................................................................................................... 4
Safety Precautions...................................................................................................................................... 4
Questions, Assistance and Repairs............................................................................................................... 4
Inspections or Repairs ................................................................................................................................ 4
Warranty Inspection and Repairs.................................................................................................................. 4
Non-Warranty Repairs ................................................................................................................................. 5
Additional Safety Precautions and Warnings.................................................................................................. 5
FCC Information ......................................................................................................................................... 6
Additional Required Equipment..................................................................................................................... 6
Blade CX2 RTF Contents ............................................................................................................................. 6
Preparing for the First Flight Checklist.......................................................................................................... 7
Flying Checklist .......................................................................................................................................... 7
Battery Warnings and Guidelines.................................................................................................................. 8
Battery Charging ...................................................................................................................................... 10
Charge Errors and Indications.................................................................................................................... 13
Installing the Transmitter Batteries ............................................................................................................. 13
Installing the Flight Battery ........................................................................................................................ 14
Center of Gravity ...................................................................................................................................... 15
Control Test ............................................................................................................................................. 16
4-in-1 Control Unit Description, Arming and Motor Control Test..................................................................... 20
Installing the Optional Training Gear............................................................................................................ 23
Understanding the Controls ....................................................................................................................... 26
Choosing a Flying Area.............................................................................................................................. 30
Flying the Blade CX2................................................................................................................................. 30
Main Motor Proportional Mix Trimmer Pot Description and Adjustment .......................................................... 32
Gyro Gain Trimmer Pot Description and Adjustment..................................................................................... 34
Upper Main Rotor Blade Tracking Adjustment.............................................................................................. 35
Channel 5 Knob Description and Function ................................................................................................... 37
Transmitter and 4-in-1 Control Unit Receiver Binding and Fail-Safe................................................................. 39
Main Motor Care and Installing the Optional Main Motor Heat Sink ................................................................ 41
2006 Official AMA National Model Aircraft Safety Code................................................................................ 43
Replacement Parts List ............................................................................................................................. 44
Optional Parts List .................................................................................................................................... 44
Replacement and Optional Parts ................................................................................................................ 45
Exploded View Parts Listing....................................................................................................................... 46
Exploded View.......................................................................................................................................... 47

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Introduction
The Blade™ CX2 takes the beginner-friendly flight stability of the original Blade CX and adds Spektrum®2.4GHz
DSM®radio control that lets you fly anywhere, anytime without ever having to worry about interference. In fact, it’s
the first ready-to-fly RC aircraft of any kind to come with this extraordinary technology built in.
And best of all, the Blade CX2 is a truly Ready-for-Anyone-to-Fly micro class electric helicopter. Its coaxial counter-
rotating blades cancel out the rotational torque that makes hovering a conventional helicopter so difficult while
providing unsurpassed stability in all other phases of flight too. And whether you are a first-time helicopter pilot
or an experienced pilot looking for the best in coaxial micro helicopter performance, you’ll enjoy many of the
outstanding features that have the Blade CX2 flying in no time such as factory installed main motors, 4-in-1 control
unit with receiver, mixer, ESCs and gyro, and S60 Super Sub-Micro Servos. With the included 5-channel transmitter,
2-cell 800mAh Li-Po battery pack, DC charger and AC adapter, you’ll have precise control for hovering, forward
flight and more with durations of up to 10–15 minutes per charge.
While the Blade CX2 is nearly ready-to-fly right from the box, please take the time to read through this manual
completely for tips on battery safety and charging, control checks, flying and more. Please also take a few minutes
to watch the included Instructional Video CD for additional tips and to see the Blade CX2 in action.
Warning
An RC helicopter is not a toy! If misused, it can cause serious bodily harm and damage to property. Fly only in open
areas, preferably at AMA (Academy of Model Aeronautics) approved flying sites, following all instructions.
Keep loose items that can get entangled in the rotor blades away for the main and tail blades, including loose
clothing, or other objects such as pencils and screwdrivers. Especially keep your hands away from the rotor blades.
Note on Lithium Polymer Batteries
Lithium Polymer batteries are significantly more volatile than alkaline or Ni-Cd/Ni-MH batteries used in
RC applications. All manufacturer’s instructions and warnings must be followed closely. Mishandling of
Li-Po batteries can result in fire. Always follow the manufacturer’s instructions when disposing of Lithium
Polymer batteries.
Warranty Period
Horizon Hobby, Inc., (Horizon) warranties that the Products purchased (the “Product”) will be free from defects in
materials and workmanship at the date of purchase by the Purchaser.
Limited Warranty
(a) This warranty is limited to the original Purchaser (“Purchaser”) and is not transferable. REPAIR OR REPLACEMENT
AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This warranty covers
only those Products purchased from an authorized Horizon dealer. Third party transactions are not covered by this
warranty. Proof of purchase is required for warranty claims. Further, Horizon reserves the right to change or modify
this warranty without notice and disclaims all other warranties, express or implied.
(b) Limitations- HORIZON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-
INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT. THE
PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET
THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE.
(c) Purchaser Remedy- Horizon’s sole obligation hereunder shall be that Horizon will, at its option, (i) repair or (ii)
replace, any Product determined by Horizon to be defective. In the event of a defect, these are the Purchaser’s
exclusive remedies. Horizon reserves the right to inspect any and all equipment involved in a warranty claim. Repair
or replacement decisions are at the sole discretion of Horizon. This warranty does not cover cosmetic damage or
damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or modification of or to any
part of the Product. This warranty does not cover damage due to improper installation, operation, maintenance, or
attempted repair by anyone other than Horizon. Return of any goods by Purchaser must be approved by Horizon
before shipment.

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Damage Limits
HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR
PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT, WHETHER SUCH CLAIM
IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. Further, in no event shall the liability of
Horizon exceed the individual price of the Product on which liability is asserted. As Horizon has no control over use,
setup, final assembly, modification or misuse, no liability shall be assumed nor accepted for any resulting damage
or injury. By the act of use, setup or assembly, the user accepts all resulting liability.
If you as the Purchaser or user are not prepared to accept the liability associated with the use of this Product, you
are advised to return this Product immediately in new and unused condition to the place of purchase.
Law: These Terms are governed by Illinois law (without regard to conflict of law principals).
Safety Precautions
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 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. The Product 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 operate correctly and avoid damage or injury.
Questions, Assistance and Repairs
Your local hobby store and/or place of purchase cannot provide warranty support or repair. Once assembly,
setup or use of the Product has been started, you must contact Horizon directly. This will enable Horizon to better
answer your questions and service you in the event that you may need any assistance. For questions or assistance,
please direct your email to [e-mail], or call 877.504.0233 toll free to speak to a
service technician.
Inspections or Repairs
If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA). Pack
the Product securely using a shipping carton. Please note that original boxes may be included, but are not designed
to withstand the rigors of shipping without additional protection. Ship via a carrier that provides tracking and
insurance for lost or damaged parcels, as Horizon is not responsible for merchandise until it arrives and is
accepted at our facility. A Service Repair Request is available at www.horizonhobby.com on the “Support” tab.
If you do not have internet access, please include a letter with your complete name, street address, email address
and phone number where you can be reached during business days, your RMA number, a list of the included items,
method of payment for any non-warranty expenses and a brief summary of the problem. Your original sales receipt
must also be included for warranty consideration. Be sure your name, address, and RMA number are clearly written
on the outside of the shipping carton.
Warranty Inspection and Repairs
To receive warranty service, you must include your original sales receipt verifying the proof-of-purchase
date. Provided warranty conditions have been met, your Product will be repaired or replaced free of charge. Repair
or replacement decisions are at the sole discretion of Horizon Hobby.

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Non-Warranty Repairs
Should your repair not be covered by warranty the repair will be completed and payment will be
required without notification or estimate of the expense unless the expense exceeds 50% of the retail
purchase cost. By submitting the item for repair you are agreeing to payment of the repair without notification.
Repair estimates are available upon request. You must include this request with your repair. Non-warranty repair
estimates will be billed a minimum of ½ hour of labor. In addition you will be billed for return freight. Please advise
us of your preferred method of payment. Horizon accepts money orders and cashiers checks, as well as Visa,
MasterCard, American Express, and Discover cards. If you choose to pay by credit card, please include your credit
card number and expiration date. Any repair left unpaid or unclaimed after 90 days will be considered abandoned
and will be disposed of accordingly. Please note: Non-warranty repair is only available on electronics and
model engines.
Electronics and engines requiring inspection or repair should be shipped to the following address:
Horizon Service Center
4105 Fieldstone Road
Champaign, Illinois 61822
All other Products requiring warranty inspection or repair should be shipped to the following address:
Horizon Product Support
4105 Fieldstone Road
Champaign, Illinois 61822
Please call 877-504-0233 with any questions or concerns regarding this Product or warranty.
Additional Safety Precautions and Warnings
As the user of this product, you are solely responsible for operating it 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 that is subject to interference from many sources outside your control.
This interference can cause momentary loss of control so it is advisable to always keep a safe distance in all
directions around your model, as this margin will help to avoid collisions or injury.
• Never operate your model with low transmitter batteries.
• Always 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 out into the street or populated areas for any reason.
• Carefully follow the directions and warnings for this and any optional support equipment (chargers, rechargeable
battery packs, etc.) that 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 specifically 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.

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FCC Information
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Caution: Changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
This product contains a radio transmitter with wireless technology which has been tested and found to be compliant
with the applicable regulations governing a radio transmitter in the 2.400 GHz to 2.4835 GHz frequency range.
The associated regulatory agencies of the following countries recognize the noted certifications for this product as
authorized for sale and use:
USA Canada Belgium
Denmark France Finland
Germany Italy Netherlands
Spain Sweden UK
Additional Required Equipment
No additional equipment is required to complete your Blade™ CX2.
Blade CX2 RTF Contents
Item Description
Not Available Separately . . . . . . . . Blade CX2 RTF Airframe
EFLH1055 . . . . . . . . . . . . . . . . . . LP5DSM 5-Channel Transmitter, 2.4GHz
EFLB0990 . . . . . . . . . . . . . . . . . . 7.4V 800mAh 2-Cell Li-Po, JST/Balance
EFLC3110 . . . . . . . . . . . . . . . . . . 2- to 3-Cell Li-Po Balancing Charger, 0.65A
EFLC4000 . . . . . . . . . . . . . . . . . . AC to 12V DC, 1.5-Amp Power Supply
EFLH1209 . . . . . . . . . . . . . . . . . . Mounting Accessories & Screwdriver
EFLH1022 . . . . . . . . . . . . . . . . . . Bind Plug

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Preparing for the First Flight Checklist
Please note this checklist is not intended to be a replacement for the content included in this instruction
manual. Although it can be used as a quick start guide, we strongly suggest reading through this manual
completely before proceeding.
Remove and inspect contents
Charge the flight battery
Install the 4 included “AA” batteries in the transmitter
Install the flight battery in the helicopter (once it has been fully charged)
Check the center of gravity of the helicopter
Test the controls
Install the optional Training Gear Set (EFLH1205; strongly recommended if this is your first helicopter model)
Familiarize yourself with the controls
Find a suitable area for flying
Flying Checklist
Please note this checklist is not intended to be a replacement for the content included in this instruction
manual. Although it can be used as a quick start guide, we strongly suggest reading through this manual
completely before proceeding.
Always turn the transmitter on first
Plug the flight battery into the 4-in-1 control unit
Allow the 4-in-1 control unit to arm properly
Fly the model
Land the model
Unplug the flight battery from the 4-in-1 control unit
Always turn the transmitter off last

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Battery Warnings and Guidelines
While the 7.4V 800mAh 2-cell Lithium Polymer Battery Pack (EFLB0990) included with your
Blade™ CX2 features Charge Protection Circuitry and Balance Charging via the included
2- to 3-Cell Lithium Polymer Balancing Charger (EFLC3110) to help ensure a safe charge
every time, you MUST read the following safety instructions and warnings before handling,
charging or using the Li-Po battery pack.
Note: Lithium Polymer batteries are significantly more volatile than the alkaline, Ni-Cd or
Ni-MH batteries used in RC applications. All instructions and warnings must be followed
exactly. Mishandling of Li-Po batteries can result in fire.
By handling, charging or using the included Li-Po battery you assume all risks associated with lithium
batteries. If you do not agree with these conditions, return your complete Blade CX2 model in new,
unused condition to the place of purchase immediately.
• You must charge the included 7.4V 800mAh 2-cell Li-Po battery pack in a safe area away from
flammable materials.
• Do not charge the battery when installed in the helicopter.
• Never charge the battery unattended. When charging the battery you should always remain in constant
observation to monitor the charging process and react to potential problems that may occur.
• After flight, the battery must be cooled to ambient temperature before charging.
• You MUST use the included 2- to 3-Cell 7.4-11.1V Li-Po Balancing Charger ONLY. Failure to do so may
result in a fire causing personal injury and/or property damage. DO NOT use a Ni-Cd or Ni-MH charger.

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• If at any time during the charge or discharge process the battery begins to balloon or swell,
discontinue charging or discharging immediately. Quickly and safely disconnect the battery, then
place it in a safe, open area away from flammable materials to observe it for at least 15 minutes.
Continuing to charge or discharge a battery that has begun to balloon or swell can result in a fire. A
battery that has ballooned or swollen even a small amount must be removed from service completely.
• In the event of a crash, you must quickly and safely disconnect and remove the battery from the model, then
place it in a safe, open area away from flammable materials to observe it for at least 15 minutes.
• Store the battery at room temperature and approximately ½ charge (3.8V per cell; 7.6V for a 2-cell battery pack)
for best results.
• When transporting or temporarily storing the battery, the temperature range should be from 40–120 degrees
Fahrenheit. Do not store the battery or model in a car or direct sunlight whenever possible. If stored in a hot car,
the battery can be damaged or even cause a fire.
• Do not over-discharge the battery. Discharging the battery too low can cause damage to the pack
resulting in reduced performance and duration.
Li-Po cells should not be discharged to below 3V each under load. In the case of the 2-cell
Li-Po packs used for the Blade™ CX2, you will not want to allow the battery to fall to below
6V during flight.
The Blade CX2 4-in-1 control unit does not feature a voltage cutoff of any type, so we suggest
that you be extremely aware of the power level of the Li-Po battery pack during flight. If at any
time the helicopter begins to require more throttle than typical to maintain hover or flight, or has
lost significant power, you must land the helicopter and power the motors down IMMEDIATELY to
prevent over-discharge of the Li-Po battery pack. If you continue to run the motors after noticing
a loss in power, it is possible to discharge the Li-Po battery pack too far, causing permanent
damage to the pack.
Over-discharge of the Li-Po battery pack can result in shortened flight times, loss of power output
or failure of the pack entirely.
If you have any further questions or concerns regarding the handling, charging and/or use of the included Li-Po
battery pack, please contact Horizon Hobby’s Product Support staff at 877-504-0233.

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Battery Charging
It is important that you only charge the included 7.4V 800mAh 2-cell Li-Po Battery Pack (EFLB0990)
with the included 2- to 3-Cell 7.4-11.1V Li-Po Balancing Charger (EFLC3110). Your battery pack is
equipped with special Charge Protection Circuitry and a Balance Charge Lead with connector that is
only compatible with this charger. Attempting to charge the pack using another Li-Po charger or non
Li-Po compatible charger could result in serious damage. Please familiarize yourself thoroughly with
the warnings and guidelines (pages 8–9) before continuing.
The included 2- to 3-Cell 7.4-11.1V Li-Po Balancing Charger will charge a near fully discharged (not over-discharged)
7.4V 800mAh 2-cell Li-Po Battery Pack in approximately 1.2–1.5 hours. In some cases the charge time may
be shorter depending on the actual amount of capacity left in the pack after a flight. NEVER charge the
battery unattended.
Note: The Li-Po battery pack included with your Blade™ CX2 will arrive partially charged. For this reason the initial
charge may only take approximately 30–50 minutes.
The charger requires up to 1.5 amps of 11.5- to 15-Volt DC input power that can be supplied by the included AC
to 12V DC, 1.5-Amp Power Supply (EFLC4000) for convenient charging anywhere an AC outlet is available.
NEVER attempt to power the charger from an AC outlet without the use of a proper AC to DC adapter/
power supply.
Note: When using the AC to DC adapter/power supply, the charger is protected to prevent damage if the alligator
clips touch. However, please take care to ensure that the alligator clips do not cause shorting of the battery,
adapter/power supply, etc. by keeping them clear.

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Input power for the charger can also be supplied from a small 12V gel cell or car battery.
The charger is equipped with two LED indicators marked RED and GREEN on the label. These LEDs indicate the
following (also found on the label of the charger):
• Red Flashing LED Only: Input power with no battery connected
• Red and Green Solid LED: Battery connected and charging
• Red Solid LED Only: Charge complete
• Red and Green Flashing LED: Charge error

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Once you have connected the charger to a power source (Use care to ensure proper polarity when connecting
the charger to the power source), its red LED will flash to indicate the charger has power and is ready to begin
charging. Connect the Li-Po battery pack to the charger using the specially marked Balance Charge Lead exiting
the battery pack and the connector labeled with 7.4V on the charger. The connector is keyed to prevent reverse
polarity connection.
Note: Do not force the connector on the Balance Charge Lead into the connector labeled 11.1V on the
charger. Doing so could result in damage to the battery pack and charger, and could result in a fire.
When the battery is properly connected and charging normally, the red and green LED indicators will glow solid.
Once the battery has been fully charged, the green LED will go out, leaving just the red LED glowing solid. The
battery can now be removed from the charger and installed into the Blade™ CX2 for flight.

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Charge Errors and Indications
In the event that both the red and green LEDs flash, a charge error has occurred. Some examples of
charge errors and their indications include:
• Alternating flashing of the red and green LEDs will indicate that the charge process has been interrupted. If input
power to the charger has been interrupted due to disconnection from the power source or a drop in voltage/
current output from the power source, unplug the battery from the charger. Next, check to make sure that the
input power plug from the AC to 12V DC adapter/power supply is connected or that the alligator clips are firmly
and properly attached to the power source. Also be sure that the power source is providing the proper amount of
voltage and current required to the charger.
After confirming the connections and that the power source is delivering the necessary voltage and current, re-
start the charge process by connecting the battery pack. Continue to monitor the charge process to ensure that
no further charge errors occur.
• Simultaneous flashing of the red and green LEDs will indicate that the voltage of the Li-Po battery pack is too low
to allow the charge process to begin. In this case the battery may have been over-discharged due to flying the
model too long (For more information on preventing over-discharge of the Li-Po battery pack, see the guidelines
section found on page 9), or that a single cell or even all cells in the battery pack may be damaged.
If after several charging attempts you continue to see this charge error indication, you should remove
the battery pack from service and replace it with a new one.
If you have any further questions or concerns regarding charge error indications, please contact Horizon Hobby’s
Product Support staff at 877-504-0233.
Installing the Transmitter Batteries
Install the 4 included “AA” batteries in the transmitter. Check the power level of the batteries and operation of the
transmitter by switching the power switch on (upward). The LCD screen at the top of the transmitter will indicate the
power level of the batteries. If at any time the voltage indicated on the LCD screen falls to 4.5V or less, an alarm
will sound, and it will be necessary to replace the batteries with new ones.
Note: Because the LP5DSM transmitter included with the Blade CX2 is equipped with Spektrum 2.4GHz
DSM technology, it does not require the same input voltage or current consumption as a typical 72MHz
transmitter for proper operation and optimum performance.

14
Installing the Flight Battery
Use the included hook and loop material for mounting the Li-Po battery pack. The “hook” material is already installed
on the battery frame stop. The included “loop” material can be installed on the end of the battery with or without the
wire leads, depending on how you choose to install the battery and route the wire leads.
If you choose to install the loop material on the end of the battery with the wire leads, it will be a little more difficult
to install the battery in the model but the wire leads can be tucked neatly inside of the body.
If you choose to install the loop material on the end of the battery without the wire leads, it will be easier to install
the battery in the model but the power leads (red and black leads with red JST connector) will need to be placed
outside of the body.
The battery can be installed through the opening in the rear of the body. Be sure to install the end of the battery
with the loop material first. If you have installed the loop material on the end of the battery with the wire leads,
be sure that the wire leads are oriented to the left side of the model so that they can pass by the stop. Slide the
battery into the support frame until the hook and loop material makes contact.

15
Quick Tip: You can install a tape “pull tab” on the end of the battery to make it easier to remove. You can also
carefully remove some additional material from the opening in the rear of the body.
Center of Gravity
Once the battery has been properly installed and secured you will need to check the helicopter’s center of gravity.
If the helicopter is not properly balanced it can be difficult to control and constantly try to move forward or
backward in hover.
To check the center of gravity, lift the helicopter by the stabilizer flybar with the flybar positioned perpendicular to
the tail section of the body. Make sure that the helicopter balances level. If it does not, confirm that the battery has
been properly installed and reposition it forward or aft if necessary.
Support by Flybar
Must Balance Level

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Control Test
Although each Blade™ CX2 model is test flown at the factory, it is a good idea to test the controls prior to the first
flight to ensure none of the servos, linkages or other parts were damaged during shipping and handling. Before
proceeding, disconnect both of the main motor plugs from the 4-in-1 control unit, making note of their
direction and polarities for proper re-installation after the control test is complete. It is not safe to
perform the control test with the main motor plugs connected to the 4-in-1 control unit after power up.
Turn the transmitter on first then plug the battery into the battery lead of the 4-in-1 unit.

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Position the helicopter to view it from the left-hand side. Move the right-hand control stick on the transmitter
forward and back to check elevator pitch control. When the stick is pushed forward, the rear servo should push
the swashplate upward.
When the stick is pulled back, the rear servo should pull the swashplate downward.

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Position the helicopter to view it from the right-hand side. Move the right-hand control stick on the transmitter
left and right to check aileron roll control. When the stick is pushed to the left, the forward servo should push
the swashplate upward.
When the stick is pushed to the right, the forward servo should pull the swashplate downward.

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If at any time during the test the controls do not respond properly, double-check the servo reversing switches
located under the door on the bottom left front of the transmitter. Dip switches 5 (THR channel reversing), 6 (AIL
channel reversing), 7 (ELE channel reversing) and 8 (RUD channel reversing) should be positioned as shown to
ensure proper control response.
Note: All other dip switches should also be positioned as shown to ensure proper operation. DO NOT
attempt to fly your Blade™ CX2 with any of the dip switches set in positions that are not shown. The
remaining dip switches may be used for future expansion.
If the controls still do not respond properly after ensuring that the servo reversing dip switch positions are correct,
you may also check the servo connections on the receiver side of the 4-in-1 unit. These should be positioned as
follows (when viewing the helicopter from behind):
AIL Channel – Forward aileron servo
ELE Channel – Rear elevator servo
Once you have confirmed that the servo connection locations are correct, all controls should be functioning
properly. If you do encounter any problems with your Blade CX2 responding properly to the transmitter, do not fly.
Contact Horizon Hobby’s Product Support staff at 877-504-0233.
If you have confirmed proper control operation of your Blade CX2, unplug the flight battery from the
4-in-1 unit and reconnect the main motor plugs to the 4-in-1 unit, taking care to keep the proper
polarity and location of each as they were before the test. Use the label on the 4-in-1 unit for
reference of the proper polarity and locations. Note that the red wire leads are positive (+) and the
black wire leads are negative (−).

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4-in-1 Control Unit Description, Arming and Motor Control Test
The unique 4-in-1 Control Unit installed on your Blade™ CX2 is a lightweight combination of 6-channel 2.4GHz DSM®
receiver, main motor mixer, main motor electronic speed controls, and piezo gyro. The 4-in-1 unit also contains a
gyro gain trimmer pot, main motor proportional mix trimmer pot and status LED.
Motor Plugs
Antenna Wire
Antenna Wire
Main Motor Proportional
Mix Trimmer Pot
Status LED
Gain Trimmer Pot
If you should ever need to access the 4-in-1 unit (usually only required if making adjustments to the gyro gain or
main motor proportional mix trimmer pots, as outlined on pages 32–34), you can do so by removing the front
body/canopy from the helicopter. This is accomplished by sliding the body/canopy and rubber grommets off the
body mount rods.
Note: It will not be necessary to access the 4-in-1 unit for proper arming and usual operation.