RTF Instruction Manual

Note: ttempting to fly the helicopter without completely reading the manual may cause injury to yourself and people in the A vicinity, as well as damage to the helicopter.
All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, Inc. For up-to-date product literature, visit www.horizonhobby.com and click on the support tab for this product.

NOTICE

Meaning of Special Language
The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product: NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND a little or no possibility of injury. CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a possibility of serious injury. WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage, and serious injury OR create a high probability of superficial injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before operating. Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury. 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. Do not attempt disassembly, use with incompatible components or augment product in any way without the approval of Horizon Hobby, Inc. 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 operate correctly and avoid damage or serious injury.

Table of Contents

Introduction. 4 Product Support. 4 Warning. 4 Additional Safety Precautions and Warnings. 4 Specifications. 5 Blade CX2 RTF Contents. 5 Preparing for the First Flight. 6 Flying Checklist. 6 Battery Warnings and Guidelines. 7 Battery Charging. 8 Charge Errors and Indications. 9 Installing the Transmitter Batteries. 10 Installing the Flight Battery. 10 Center of Gravity. 11 Control Test. 12 3-in-1 Control Unit Description, Arming and Motor Control Test. 14 Understanding the Controls. 16 Choosing a Flying Area. 19 Flying the Blade CX2. 19 Main Motor Proportional Mix Trimmer Pot Description and Adjustment. 20 Gyro Gain Trimmer Pot Description and Adjustment. 21 Upper Main Rotor Blade Tracking Adjustment. 22 Channel 5 Knob Description and Function. 23 Transmitter and 3-in-1 Control Unit Receiver Binding and Fail-Safe. 23 Replacement Parts List. 25 Optional Parts List. 25 Exploded View. 26 Exploded View Parts Listing. Official Academy of Model Aeronautics Safety Code. 28 Warranty and Repair Policy. 29 Contact Information. 30 Customer Service Information. 30 Compliance Information for the European Union. 30

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. 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, youll enjoy many of the outstanding features that have the Blade CX2 flying in no time such as factory installed main motors, 3-in-1 control unit with 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, youll have precise control for hovering, forward flight and more with durations of up to 1015 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.

Product Support

For assistance in charging, setting up, binding or operating your Blade CX2, contact the appropriate Horizon Product Support office.

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 from the main and tail blades, including loose clothing, or other objects such as pencils and screwdrivers. Always keep your hands away from the rotor blades.
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. arefully follow the directions and warnings for this and any optional support equipment (chargers, rechargeable battery packs, C etc.) that you use. Keep all chemicals, small parts and anything electrical out of the reach of children. oisture causes damage to electronics. Avoid water exposure to all equipment not specifically designed and protected for M this purpose. Never lick or place any portion of your model in your mouth as it could cause serious injury or even death.

Specifications

Length. 16.42 in (417mm) Height. 7.17 in (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. 3-in-1Mixer/ESC/Gyro (installed) Servos. S60 Super Sub-Micro (2 installed) Receiver. Spektrum 6100eb (installed)

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 No additional equipment is required to complete your Blade CX2.
Preparing for the First Flight
Please note this checklist is not intended to be a replacement for the content of 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 3-in-1 control unit Allow the 3-in-1 control unit to arm properly Fly the model Land the model Unplug the flight battery from the 3-in-1 control unit Always turn the transmitter off last
Battery Warnings and Guidelines
The 7.4V 800mAh 2-cell Lithium Polymer Battery Pack (EFLB0990) included with your Blade CX2 features 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. WARNING: 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. ou must charge the included 7.4V 800mAh 2-cell Li-Po battery pack in a safe area away from flammable materials. Y Do not charge the battery when installed in the helicopter. ever charge the battery unattended. When charging the battery you should always remain in constant observation to monitor N 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.

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: lternating flashing of the red and green LEDs will indicate that the charge process has been interrupted. If input power to the A 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. imultaneous flashing of the red and green LEDs will indicate that the voltage of the Li-Po battery pack is too low to allow the S 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 6), 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.
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.

Position the helicopter to view it from the left-hand side. Move the elevator 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.
Position the helicopter to view it from the right-hand side. Move the aileron 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.
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 1 (THR channel reversing), 6 (AIL channel reversing), and 7 (ELE channel reversing) should be positioned as shown to ensure proper control response. CAUTION: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.
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 3-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. If you have confirmed proper control operation of your Blade CX2, unplug the flight battery from the 3-in-1 unit and reconnect the main motor plugs to the 3-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 3-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 ().
3-in-1 Control Unit Description, Arming and Motor Control Test
The unique 3-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 3-in-1 unit also contains a gyro gain trimmer pot, main motor proportional mix trimmer pot and status LED.
Main Motor Proportional Mix Trimmer Pot Gain Trimmer Pot Status LED

Motor Plugs

Remove the helicopter front body to access the 3-in-1 unit. The gain and proportional pots can be adjusted when the front body is removed. Note: It will not be necessary to access the 3-in-1 unit for proper arming and usual operation.

The following checklist contains the steps you must follow to ensure proper arming and operation of the 3-in-1 unit as well as proper motor control response: ach time before you fly you must ALWAYS turn on the transmitter power first before connecting the flight battery to the 3-in-1 E unit. Never connect the flight battery to the 3-in-1 unit before first powering on the transmitter. Also, never turn off the transmitter before disconnecting the flight battery from the 3-in-1 unit first. oth the throttle stick and throttle trim MUST be in their lowest possible position in order for the 3-in-1 unit to arm the elecB tronic speed controls for the main motors. If this is the first test flight, or a test flight following repairs, you will also want to center the rudder, aileron and elevator trims.
Throttle Trim Set Throttle Trim and Throttle Stick at Lowest Position Elevator Trim

Rudder Trim

Aileron Trim
Mode 2 transmitter shown for reference
fter confirming that the transmitter has been turned on and has an adequate level of battery power as displayed by the LCD A screen at the top of the transmitter, it is now safe to connect the flight battery to the 3-in-1 unit. Note: Each time you power the transmitter on, it will enter Bind Mode for a few seconds, as indicated by the red blinking LED located under the door on the left bottom front of the transmitter. Once this LED becomes solid, the transmitter is no longer in bind mode. We recommend waiting to connect the flight battery to the 3-in-1 unit until after the transmitter has exited bind mode, otherwise the 3-in-1 unit may not arm properly or as quickly. ith battery power applied, the 3-in-1 unit status LED will blink red, and then blink green. Do not move or sway the W helicopter once the status LED begins to blink green confirming that the initialization process and calibration of the gyro has begun. It is OK to move the model when the status LED is blinking red (as in the time it takes to connect the flight battery to the 3-in-1 unit and place the model at rest), as long as the model remains motionless when the status LED begins to blink green. The gyro will not calibrate correctly if the model is moved and the green LED is blinking. the status LED becomes solid green, the unit is armed and ready for flight. Use caution as both main motors will When now run with throttle stick or throttle trim input. Do not advance the throttle stick or trim until you are clear of the rotor blades and ready to fly. Note: If the status LED does not become solid green, please review the following: f after blinking red the status LED becomes solid red, you have a positive Radio Frequency (RF) link between the transmitI ter and receiver of the 3-in-1 unit, but the throttle stick and throttle trim may not be in their lowest possible positions. Check to be sure that both the throttle stick and throttle trim are in their lowest possible position and the status LED should blink green then become solid green indicating the unit is armed and ready for flight. Proceed to the next step of the checklist once the unit is armed. f after blinking red the status LED continues to flash from green to red, you do not have a positive RF link between the transI mitter and receiver of the 3-in-1 unit. First, check to be sure that the transmitter has been powered on and has an adequate level of battery power. If the transmitter was indeed powered on, power both the transmitter and 3-in-1 unit down, then follow the steps to bind the 3-in-1 units receiver to the transmitter (see pages 3334 for more information). Once you have confirmed that the transmitter and receiver are properly bound, the 3-in-1 unit should now arm normally.

nce you have placed the helicopter in a safe area to test motor control, free from obstructions, and are clear of the rotor O blades, you can safely begin to power up the model. dvance the throttle stick slowly, just until the main rotor blades begin to spin. Be sure not to advance the throttle stick too far A to keep the helicopter from lifting off the ground. Note the direction that each of the main rotor blades spins. When viewed from the top, the lower main rotor blade should spin clockwise and the upper main rotor blade should spin counterclockwise. If either rotor blade is operating in the wrong direction, unplug the battery, then simply reverse its motor plug polarity on the 3-in-1 unit. Note that the proper polarity is marked on the label of the 3-in-1 unit. fter confirming that the direction of rotation for both rotor blades is correct, it is best to confirm that both rotor blades respond A properly to rudder control inputs. With both main rotor blades spinning at a low level of power, move the rudder (left-hand) stick all the way to the right. This should cause the speed of the upper main rotor blade to increase, and the speed of the lower main rotor blade to decrease. Next, move the rudder stick all the way to the left. This should cause the speed of the lower main rotor blade to increase and the speed of the upper main rotor blade to decrease. If both rotor blades are not responding properly to rudder input, simply reverse the locations of their motor plugs on the 3-in-1 unit. Note that the proper motor plug locations are marked on the label of the 3-in-1 unit.
Understanding the Controls
If you are not familiar with the controls of your Blade CX2, please take a few minutes to familiarize yourself with them before attempting your first flight. The left stick on the Mode 2 transmitter controls both throttle (climb/descend) and rudder (yaw left/right). When the left-hand stick and throttle trim lever are in their lowest positions, the main rotor blades will not spin. Advancing the stick upward will increase the speed of the main rotor blades. Increasing the speed of the main rotor blades will cause the model to climb.

Throttle Trim

Decreasing the speed of the main rotor blades by lowering the left-hand stick will cause the model to descend.

Descend

After lifting the model off the ground, you can balance the throttle by carefully moving the left-hand stick up and down so that the model will hold a stationary hover without climbing or descending.
You can also use the throttle trim to adjust the throttle value for a given stick position. For example, raising the throttle trim will allow the model to hover at a lower throttle stick position. However, if you do raise the throttle trim, you MUST remember to lower it (and the throttle stick) to the lowest possible position IMMEDIATELY in the event of a crash or rotor blade strike. Failure to lower the throttle trim (and throttle stick) to its lowest possible position immediately in the event of a crash could result in damage to the main motor ESCs in the 3-in-1 unit, which may require replacement of the 3-in-1 unit. Moving the left-hand stick to the left will turn (yaw) the nose of the helicopter to the left about the axis of the main shaft. This is accomplished by increasing the speed of the lower main rotor blade while decreasing the speed of the upper main rotor blade.

Nose Yaws Left

Moving the stick to the right will turn (yaw) the nose of the helicopter to the to the right about the axis of the main shaft. This is accomplished by increasing the speed of the upper main rotor blade while decreasing the speed of the lower main rotor blade.

Nose Yaws Right

The rudder trim can be used to help keep the nose of the helicopter from rotating to the left or right when in hover with no rudder stick input. For example, if the nose of the helicopter drifts to the right when in hover, add left rudder trim until the nose stays as close to straight as possible. Also note that further adjustments to the rudder trim can be made using the Main Motor Proportional Mix Trimmer Pot. The right-hand stick controls both elevator (pitch fore/aft) and aileron (roll). Pushing the stick forward will pitch the nose of the helicopter downward, allowing the helicopter to be flown forward.

Helicopter Moves Forward

Elevator Trim
Pulling the stick backward will pitch the nose of the helicopter upward, allowing the helicopter to be flown backward.
Helicopter Moves Backward
The elevator trim can be used to help keep the helicopter from drifting forward or backward when in hover with no elevator stick input. For example, if the helicopter drifts forward when in hover, pull the elevator trim downward until the helicopter hovers as level as possible with no forward drifting. Moving the stick to the left will roll the helicopter to the left, allowing the helicopter to be flown to the left.

Helicopter Slides Left

Moving the stick to the right will roll the helicopter to the right, allowing the helicopter to be flown to the right.

Helicopter Slides Right

The aileron trim can be used to help keep the helicopter from drifting left or right when in hover with no aileron stick input. For example, if the helicopter drifts to the right when in hover, add left aileron trim until the helicopter hovers as level as possible with no drifting to the right. Once you have become familiar with the controls of the helicopter, you are almost ready to fly.

Choosing a Flying Area

When you are ready for your first flight, you will want to select a large, open area that is free of people and obstructions. We strongly recommend an indoor area with at least 20-feet by 20-feet of floor space and no less than 8-foot ceilings. If you have to make your first flight (and subsequent flights) outdoors, you MUST pick a time when wind conditions are COMPLETELY CALM. Due to the relatively small size and low weight of the Blade CX2, even the slightest amount of wind can cause you to lose control, or the rotor blades to strike each other, resulting in a crash.

Flying the Blade CX2

Having followed the proper 3-in-1 control unit arming procedure, confirmed proper control of the servos and motors, and found a suitable flying area, your Blade CX2 is ready for flight. In addition to reviewing the flight maneuvers outlined below, we recommend that you watch the included Instructional Video CD to see many of these maneuvers and adjustments performed by the Blade CX2 and pilot. lowly raise the throttle stick, increasing the speed of the main rotor blades until the model begins to lift off. Do not raise the S throttle stick too quickly as the model could climb too fast causing you to lose control or make contact with objects above. ift the model off the ground just a few inches and concentrate on balancing the left-hand (throttle) stick position so that the L model holds a steady hover altitude. In some cases it may be best to make a few short hops to an altitude of just a few inches until you become familiar with the control inputs and trim settings required to maintain a steady hover and altitude. As you will find, the Blade CX2 requires minor throttle adjustments to maintain its altitude in hover. Remember to keep these throttle adjustments as minimal as possible as large adjustments could result in a loss of control and/or a possible crash. hile attempting to establish a low-level hover, you can also check to see if any trim adjustments are required to help keep the W Blade CX2 from constantly drifting in various directions. If you find the helicopter constantly drifts without any directional control input, it will be best to land the model before making any adjustments to the trim levers. If the nose of the helicopter is drifting to the left or right, you will need to adjust the rudder trim. You can also adjust the Main Motor Proportional Mix if you experience any difficulties in trimming nose drift with the rudder trim lever only. If the helicopter is drifting forward or backward, you will need to adjust the elevator trim. If the helicopter is drifting to the left or right, you will need to adjust the aileron trim. Continue to make trim adjustments until the helicopter can hover at a low altitude with very little drifting and directional control input. If the Blade CX2 is your first helicopter model, it may be best to have the help of an experienced helicopter pilot to trim the model for you before making your first flight. nce you have the Blade CX2 properly trimmed and maintaining a stable low-level hover, practice using the rudder, elevator and O aileron controls to get a feel for how the helicopter responds to control inputs. Remember to keep the control inputs as minimal as possible to prevent over-controlling the helicopter, especially when in hover. fter becoming comfortable with hovering the Blade CX2 at low-levels of altitude just a few inches off the ground, you can A transition to hovering and flying the helicopter at higher altitudes of approximately three to four feet. At these higher altitudes you will be able to get a feel for the flight characteristics of the Blade CX2 when it is flying out of ground effect. f at any time during flight you feel like the helicopter is drifting out of control, simply release all of the controls except for I throttle. You will need to use the throttle to maintain altitude, but due to the inherent stability of the coaxial counter-rotating blades, the Blade CX2 will simply return to a stable hover on its own if space allows. ont be afraid to set the helicopter down on the ground quickly by lowering the throttle when approaching walls or other D obstacles to help prevent main rotor blade strikes. Also, the optional Training Gear Set (EFLH1205) will help to further prevent damage to the helicopter in the event that you must make an abrupt landing to avoid walls or other obstacles. n the unfortunate event of a crash or rotor blade strike, no matter how minor or major, you MUST lower both the throttle I (left-hand) stick and throttle trim to their lowest possible position as quickly as possible to prevent damage to the ESCs of the 3-in-1 unit.

Failure to lower both the throttle stick and throttle trim to their lowest possible positions in the event of a crash could result in damage to the main motor ESCs in the 3-in-1 unit, which may require replacement of the 3-in-1 unit. Note: Crash damage is not covered under warranty. t is extremely important when hovering and flying the Blade CX2 to be aware of the power level of the Li-Po battery pack. If at I any time the helicopter begins to require more throttle than typical to maintain hover or flight, or has lost the ability to maintain hover or flight due to significant loss of 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. Once you have gained experience and confidence in hovering the Blade CX2, you can attempt more advanced maneuvers including: Forward Flight Skidding Takeoffs Backward Flight Skidding Landings Pirouettes Spot Landings
Main Motor Proportional Mix Trimmer Pot Description and Adjustment
The Main Motor Proportional Mix Trimmer Pot can be found on the left side of the 3-in-1 control unit. This proportional trimmer pot adjusts the amount of mixing between the main motors allowing you to fine-tune the rudder trim (sub-trim) to help prevent the nose from drifting to the left or right when in hover.
Main Motor Proportional Mix Trimmer Pot
n a stable hover, with the rudder trim centered and no rudder control input, note toward which direction the nose of the I helicopter is trying to drift. If the nose of the helicopter is drifting to the left, you will want to increase power to the right-hand motor (spinning the upper main rotor blade). This is accomplished by turning the proportional trimmer pot clockwise. (+) f the nose of the helicopter is drifting to the right in hover, you will want to increase the power to the left-hand motor (spinning I the lower main rotor blade). This is accomplished by turning the proportional trimmer pot counterclockwise. ()
Note: ou must always power down the 3-in-1 unit before making adjustments to the proportional mix trimmer pot. Any changes Y made to the trimmer pot will not take effect until the 3-in-1 unit is re-initialized and re-armed. Also, you should always center the rudder trim lever on the transmitter after making adjustments to the proportional mix trimmer pot on the 3-in-1 unit. Note: Be sure to use the proper size and type of screwdriver to carefully make adjustments to the trimmer pot. Use of the improper size and type of screwdriver or too much force can damage the trimmer pot. Also be sure to take your time when making adjustments to the proportional trimmer pot as it may only require very slight adjustment to achieve the desired level of performance. As the battery output voltage decreases throughout the flight, it may be necessary to make small adjustments to the rudder trim or rudder control input in order to keep the nose of the helicopter straight. These small adjustments can be made using the rudder trim lever or rudder control stick and do not require additional adjustments of the proportional trimmer pot.

Channel 5 Knob Description and Function
The transmitter included with your Blade CX2 is equipped with an optional-use Channel 5 knob (labeled as CH 5) on the top right panel. This knob allows you to control function of the transmitters 5th channel. This channel remains unused for flying the Blade CX2, however, it is available for use in controlling a variety of potential optional features including actuation of an additional servo or certain electronic components. It allows full proportional control of the 5th channel from approximately 0100% travel. The knob can be operated in either direction for control. You can use either the most clockwise (+) or most counterclockwise (-) position for 0 or 100% travel, and you will achieve approximately 50% travel with the knob in the middle position, pointing directly to the rear of the transmitter.

50% Travel

0% Travel

100% Travel

Transmitter and 3-in-1 Control Unit Receiver Binding and Fail-Safe
Binding is the process of programming the receiver to recognize the GUID (Globally Unique Identifier) code of a single specific transmitter. If you ever find that it is necessary to replace your transmitter or the 3-in-1 control unit in your model, it will be necessary for you to Bind the new transmitter or 3-in-1 control unit receiver to your existing transmitter or receiver for proper operation. During the binding process, the smart fail-safe (SmartSafe) positions of your system are also set. With SmartSafe, in case of loss of signal, the throttle will go to the preset position that was stored during the binding process and all other channels will hold their last position. And if the receiver (3-in-1 Control Unit) is powered on before the transmitter, all channels but throttle will go to the fail-safe positions that were stored during the binding process, while the throttle channel will not generate a pulse in order to prevent the ESC(s) from arming. Note: Because the SmartSafe positions are set during the binding process, it is important to set all channels to the preferred fail-safe positions before proceeding. In the case of the Blade CX2, we strongly recommend setting the throttle stick and throttle trim to their lowest positions, and the rudder, aileron and elevator channels to their neutral positions. Channel 5 should be set to your preferred position if you have chosen to utilize it. The following steps outline the binding process: ach time the transmitter is turned on, it enters Bind Mode for a few seconds. You can tell that the transmitter is in bind mode E when you see the red LED located under the door on the bottom left front of the transmitter blink rapidly. Once the LED becomes solid, the transmitter is no longer in bind mode and will transmit normally.

Optional Parts List

EFLH1205 EFLH1208 EFLM1913 EFLH1227 EFLH1228 EFLH1229 EFLH1230 EFLH1231 EFLH1232 EFLH1240 EFLH1241 EFLH1244 EFLH1245 EFLH1246 EFLH1258 EFLH1259 EFLH1260 EFLH1261 EFLH1262 Training Gear Set Main Motor Heat Sink Heat Sink Compound, 5g Front Body, Yellow Rear Body, Yellow: Complete Body Set, Yellow Front Body, Police, Blue Rear Body, Police, Blue Complete Body Set, Police, Blue Inner Shaft w/Aluminum Head/Hub Inner Shaft for Aluminum Head/Hub Aluminum Bearing Holder w/Bearing Aluminum Lower Rotor Head Set Aluminum Swashplate Set Front Body, Marines w/o Decals Rear Body, Marines w/o Decals Complete Body Set, Marines w/Decals/Gun/Missiles Decal Set, Marines Gun and Missile Set
Please see your favorite retailer or visit our web site (www.E-fliteRC.com) to find the latest in new replacement and option parts releases for your Blade CX2.

Exploded View

023 024

004 005

029 032
Exploded View Parts Listing
# Item EFLH1219. EFLH1219. EFLH1219. EFLH1221. EFLF1225. EFLH1242. EFLH1242. EFLH1219. EFLH1121. EFLH1217. EFLH1213. EFLH1217. EFLH1225. EFLH1220. EFLH1217. EFLH 1216. EFLH1216. EFLH1216. EFLH1218. EFLH1214. EFLH1210. EFLH1211. EFLH1210. EFLH1211. EFLH1254. EFLH1226. EFLRS60. EFLH1225. EFLH1215. EFLH1218. EFLH1024. EFLH1254. EFLH1225. EFLH1255. EFLH1256. EFLH1213. EFLH1243. EFLH1214. EFLH1223. EFLH1223. EFLH1223. EFLH1226. EFLB0990. EFLH1222. EFLH1222. EFLH1225. Description Stabilizer Flybar Rubber Tip (2) Stabilizer Flybar Weight (2) Stabilizer Flybar (1) Upper Main Blade (2) 1.2 x 6mm Screw (5) Stabilizer Flybar Hub/Holder (1) Upper Rotor Head & Inner Shaft (1) Stabilizer Flybar Linkage (1) Bearing 2mm x 6mm x 3mm (2) Bearing Holder (1) Outer Shaft (1) Lower Rotor Head (1) M2 x 2.5mm Screw (5) Lower Main Blade (2) Lower Rotor Head/Swash Linkage (2) Upper Swashplate (1) Bearing 7mm x 13mm x 4mm (1) Lower Swashplate (1) Servo Pushrod Control Link (2) Outer Shaft Retaining Collar (1) Main Motor Left (1) Main Motor Right (1) Pinion Gear Left (1) Pinion Gear Right (1) Servo Mount (1) Body Mount Rod (2) Super Sub-Micro Servo (2) 1.7 x 4mm Screw (8) Bearing 4mm x 8mm x 3mm (2) Servo Pushrod (2) 3-in-1 Control Unit (1) Main Frame (1) M2 x 4mm Screw (6) Front Body (1) Rear Body (1) Outer Shaft Main Gear (1) Inner Shaft Main Gear (1) Inner Shaft Retaining Collar (1) Battery Support Rear (1) Battery Support Front (1) Battery Support Joiner (2) Body Mount Grommet (4) Battery Pack (1) Landing Skid Right (1) Landing Skid Left (1) Step Washer (1)

Contact Information

Country of Purchase United States of America Horizon Hobby Horizon Service Center (Electronics and engines) Horizon Product Support (All other products) Horizon Hobby Limited Address 4105 Fieldstone Rd Champaign, Illinois, 61822 USA 4105 Fieldstone Rd Champaign, Illinois, 61822 USA Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS, United Kingdom Hamburger Str. Elmshorn, Germany 14 Rue Gustave Eiffel Zone dActivit du Rveil Matin 91230 Montgeron Phone Number / Email Address 877-504-0233 Online Repair Request: visit www.horizonhobby.com/repairs 877-504-0233 productsupport@horizonhobby.com +44 (0) 097 sales@horizonhobby.co.uk +service@horizonhobby.de +33 (0) 70 infofrance@horizonhobby.com

United Kingdom

Germany France
Horizon Technischer Service Horizon Hobby SAS

Parts Information

Country of Purchase United States Horizon Hobby Sales Address 4105 Fieldstone Rd Champaign, Illinois, 61822 USA Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS, United Kingdom Hamburger Str. Elmshorn, Germany 14 Rue Gustave Eiffel Zone dActivit du Rveil Matin 91230 Montgeron Phone Number / Email Address 800-338-4639 sales@horizonhobby.com +44 (0) 097 sales@horizonhobby.co.uk +service@horizonhobby.de +33 (0) 70 infofrance@horizonhobby.com

Horizon Hobby Limited

Horizon Hobby GmbH Horizon Hobby SAS
Compliance Information for the European Union
(in accordance with ISO/IEC 17050-1) No. HH20100225U3 Product(s): E-flite Blade CX2 RTF helicopters Item Number(s): EFLH1250EUM1, EFLH1250EUM2, EFLH1250UKM1, EFLH1250UKM2 Equipment class: 1 The object of declaration described above is in conformity with the requirements of the specifications listed below, following the provisions of the European R&TTE directive 1999/5/EC: EN 300-328 ERM requirements for wideband transmission systems operating in the 2.4 GHz ISM band EN 301 489-1 EN 301 489-17 EN 60950 General EMC requirements for Radio equipment Safety
Instructions for disposal of WEEE by users in the European Union
This product must not be disposed of with other waste. Instead, it is the users responsibility to dispose of their waste equipment by handing it over to a designated collections point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, your household waste disposal service or where you purchased the product.
Signed for and on behalf of: Horizon Hobby, Inc. Champaign, IL USA February 25, 2010

Specifications

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

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... 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

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, its 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 counterrotating 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, youll 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, youll have precise control for hovering, forward flight and more with durations of up to 1015 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 manufacturers instructions and warnings must be followed closely. Mishandling of. Li-Po batteries can result in fire. Always follow the manufacturers 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 NONINFRINGEMENT, 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 PURCHASERS INTENDED USE. (c) Purchaser Remedy- Horizons 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 Purchasers 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.

Additional Required Equipment
No additional equipment is required to complete your Blade CX2.

Blade CX2 RTF Contents

Item Not Available Separately. . . . . . . . EFLH1055. . . . . . . . . . . . . . . . . . EFLB0990. . . . . . . . . . . . . . . . . . EFLC3110. . . . . . . . . . . . . . . . . . EFLC4000. . . . . . . . . . . . . . . . . . EFLH1209. . . . . . . . . . . . . . . . . . EFLH1022. . . . . . . . . . . . . . . . . . Description Blade CX2 RTF Airframe LP5DSM 5-Channel Transmitter, 2.4GHz 7.4V 800mAh 2-Cell Li-Po, JST/Balance 2- to 3-Cell Li-Po Balancing Charger, 0.65A AC to 12V DC, 1.5-Amp Power Supply Mounting Accessories & Screwdriver Bind Plug
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
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
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.

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 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 40120 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 Hobbys Product Support staff at 877-504-0233.

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.
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, restart 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 Hobbys 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.

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.
Antenna Wire Gain Trimmer Pot
Main Motor Proportional Mix Trimmer Pot Status LED

Motor Plugs Antenna Wire

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 3234), 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.
The following checklist contains the steps you must follow to ensure proper arming and operation of the 4-in-1 unit as well as proper motor control response:
Each time before you fly you must ALWAYS turn on the transmitter power first before connecting
the flight battery to the 4-in-1 unit. Never connect the flight battery to the 4-in-1 unit before first powering on the transmitter. Also, never turn off the transmitter before disconnecting the flight battery from the 4-in-1 unit first.
Both the throttle (left-hand) stick and throttle trim MUST be in their lowest possible position in order
for the 4-in-1 unit to arm the electronic speed controls for the main motors. If this is the first test flight, or a test flight following repairs, you will also want to center the rudder, aileron and elevator trims.
Throttle Trim Set Throttle Trim and Throttle Stick at Lowest Position Elevator Trim

Rudder Trim

Aileron Trim
After confirming that the transmitter has been turned on and has an adequate level of battery power as
displayed by the LCD screen at the top of the transmitter, it is now safe to connect the flight battery to the. 4-in-1 unit.
Note: Each time you power the transmitter on, it will enter Bind Mode (See pages 3940 for more information regarding Bind Mode) for a few seconds, as indicated by the red blinking LED located under the door on the left bottom front of the transmitter. Once this LED becomes solid, the transmitter is no longer in bind mode. We recommend waiting to connect the flight battery to the 4-in-1 unit until after the transmitter has exited bind mode, otherwise the 4-in-1 unit may not arm properly or as quickly.

With battery power applied, the 4-in-1 unit status LED will blink red, and then blink green. It is
extremely important that you do not move or sway the helicopter once the status LED begins to blink green confirming that the initialization process and calibration of the gyro has begun. It is OK to move the model when the status LED is blinking red (as in the time it takes to connect the flight battery to the 4-in-1 unit and place the model at rest), as long as the model remains motionless when the status LED begins to blink green.
When the status LED becomes solid green, the unit is armed and ready for flight. Use caution as both
main motors will now run with throttle stick or throttle trim input. Do not advance the throttle stick or trim until you are clear of the rotor blades and ready to fly. Note: If the status LED does not become solid green, please review the following: If after blinking red the status LED becomes solid red, you have a positive Radio Frequency (RF) link between the transmitter and receiver of the 4-in-1 unit, but the throttle stick and throttle trim may not be in their lowest possible positions. Check to be sure that both the throttle stick and throttle trim are in their lowest possible position and the status LED should blink green then become solid green indicating the unit is armed and ready for flight. Proceed to the next step of the checklist once the unit is armed. If after blinking red the status LED continues to flash from green to red, you do not have a positive RF link between the transmitter and receiver of the 4-in-1 unit. First, check to be sure that the transmitter has been powered on and has an adequate level of battery power. If the transmitter was indeed powered on, power both the transmitter and 4-in-1 unit down, then follow the steps to bind the 4-in-1 units receiver to the transmitter (see pages ** to ** for more information). Once you have confirmed that the transmitter and receiver are properly bound, the 4-in-1 unit should now arm normally. If your 4-in-1 unit will not arm after following the guidelines as listed above, contact Horizon Hobbys Product Support staff at 877-504-0233.
Once you have placed the helicopter in a safe area to test motor control, free from obstructions,
and are clear of the rotor blades, you can safely begin to power up the model.
Advance the throttle (left-hand) stick slowly, just until the main rotor blades begin to spin. Be sure not to
advance the throttle stick too far to keep the helicopter from lifting off the ground. Note the direction that each of the main rotor blades spins. When viewed from the top, the lower main rotor blade should spin clockwise and the upper main rotor blade should spin counterclockwise. If either rotor blade is operating in the wrong direction, unplug the battery, then simply reverse its motor plug polarity on the 4-in-1 unit. Note that the proper polarity is marked on the label of the 4-in-1 unit.

After confirming that the direction of rotation for both rotor blades is correct, it is best to confirm that both
rotor blades respond properly to rudder control inputs. With both main rotor blades spinning at a low level of power, move the rudder (left-hand) stick all the way to the right. This should cause the speed of the upper main rotor blade to increase, and the speed of the lower main rotor blade to decrease. Next, move the rudder stick all the way to the left. This should cause the speed of the lower main rotor blade to increase and the speed of the upper main rotor blade to decrease. If both rotor blades are not responding properly to rudder input, simply reverse the locations of their motor plugs on the 4-in-1 unit. Note that the proper motor plug locations are marked on the label of the 4-in-1 unit.
After confirming both main rotor blades respond properly to rudder inputs, your Blade CX2 is now ready.
for flight. However, please be sure to review the following sections of the manual before proceeding with the. first flight.
Installing the Optional Training Gear
If the Blade CX2 is your first helicopter model, we suggest that you install the optional Training Gear Set (EFLH1205) before making your first flight. The training gear helps to further increase the stability of the model while also providing added support and cushioning to prevent tip-overs and damage to the model from abrupt landings. Installing the training gear takes only a few minutes following these steps: The Training Gear Set includes four training gear rods with plastic balls installed, four training gear rod to landing skid attachments, four screws and one training gear rod mounting base.
Locate the four training gear rod to landing skid attachments and four screws. Note that there are two each of two types of attachments. Carefully snap two of the attachments onto the landing skids forward of the landing skid struts. The side of the attachment with the large hole should face outward, away from the helicopter, and forward to the front of the helicopter. Next, carefully snap the remaining two attachments onto the landing skids behind the landing skid struts. The side of the attachment with the large hole should face outward, away from the helicopter, and backward to the rear of the helicopter.
Once you have installed all four attachments, install the four screws making sure that they thread properly into the back side of the attachment. It may be helpful to squeeze the attachment with a pair of pliers to make it easier to thread the screw into the backside of the attachment. Do not tighten the screws all the way at this time, as the attachments will need to be adjusted for proper alignment once the training gear rods are installed.
Locate the four training gear rods and rod mounting base. Note that the rod mounting base has four channels into which the training gear rods will mount. The open side of these channels will face upward toward the bottom of the helicopter when properly installed. Carefully pass each of the rods through the attachments on the landing skids and into the channels on the base. Take care to not pull the landing skids out of their mounts in the battery supports.

Main Motor Proportional Mix Trimmer Pot
In a stable hover, with the rudder trim centered and no rudder control input, note toward which direction the nose of the helicopter is trying to drift. If the nose of the helicopter is drifting to the left, you will want to increase power to the right-hand motor (spinning the upper main rotor blade). This is accomplished by turning the proportional trimmer pot clockwise. (+)
If the nose of the helicopter is drifting to the right in hover, you will want to increase the power to the. left-hand motor (spinning the lower main rotor blade). This is accomplished by turning the proportional. trimmer pot counterclockwise. ()
Note: You must always power down the 4-in-1 unit before making adjustments to the proportional mix trimmer pot. Any changes made to the trimmer pot will not take effect until the 4-in-1 unit is reinitialized and re-armed. Also, you should always center the rudder trim lever on the transmitter after making adjustments to the proportional mix trimmer pot on the 4-in-1 unit. Note: Be sure to use the proper size and type of screwdriver to carefully make adjustments to the trimmer pot. Use of the improper size and type of screwdriver or too much force can damage the trimmer pot. Also be sure to take your time when making adjustments to the proportional trimmer pot as it may only require very slight adjustment to achieve the desired level of performance. As the battery output voltage decreases throughout the flight, it may be necessary to make small adjustments to the rudder trim or rudder control input in order to keep the nose of the helicopter straight. These small adjustments can be made using the rudder trim lever or rudder control stick and do not require additional adjustments of the proportional trimmer pot.
Gyro Gain Trimmer Pot Description and Adjustment
The gain trimmer pot adjusts the gain setting value of the piezo gyro used to aid in keeping the tail of the helicopter straight/on heading during flight.

Gain Trimmer Pot

The gain value is set too high if the tail of the helicopter twitches/bounces quickly from side to side when in hover. If this is case for your model, reduce the gyro gain in small increments until the tail of the helicopter no longer twitches/bounces from side to side in hover. Turn the gyro gain trimmer pot counterclockwise (-) to decrease gyro gain. The gain value is set too low when the tail of the helicopter feels loose during flight, requiring constant left and right rudder inputs to maintain heading when in hover. If this is the case for your model, increase the gyro gain in small increments until few, if any, left and right rudder inputs are required to maintain heading. Turn the gyro gain trimmer pot clockwise (+) to increase gyro gain. Note: When adjusting the gyro gain trimmer pot, the changes will take effect without the need to power down and re-arm the 4-in-1 unit. However, please exercise extreme caution when adjusting the gyro gain trimmer pot with the model armed to prevent personal injury or damage to the model.

Upper Main Rotor Blade Tracking Adjustment
Caution: Be sure to maintain a safe distance from the helicopter (approximately 1015 feet) when tracking the Upper Main Rotor Blade. Your Blade CX2 is equipped with an adjustable linkage between the Stabilizer Flybar and Upper Main Rotor. Blade. This linkage allows you to adjust the tracking of the upper main rotor blade for smoother and more. stable flight performance.
You can check the upper main rotor blade tracking either on the ground or in the air at eye level. It might be a good idea to have an assistant on hand to help sight the blade tracking. Once the main rotor blades have been brought up to speed, note whether the tips of the upper main rotor blade are tracking in the same plane or not.
Tips Out Of Track Adjustment Necessary
Tips In Track No Adjustment Necessary
If the tips are not tracking in the same plane, power the helicopter down to make adjustments to the adjustable linkage. You can start by turning the ends of the linkage in one-half to one-full turn at a time. Power the helicopter up again and re-check the blade tracking. If the tracking has gotten better, continue to turn the ends of the linkage in one-half to one-full turn at a time until the tips are tracking in the same plane. If the tracking has gotten worse after first turning the ends of the adjustable linkage in, turn the ends of the linkage back out one-half to one-full turn at a time. If the tracking then gets better, continue to turn the ends of the linkage out one-half to one-full turn at a time until the tips are tracking in the same plane. Typically, not much adjustment should be necessary to properly track the tips of the upper main rotor blade. However, due to the small size of the linkage ends and threaded rods it may not always be possible to achieve absolutely perfect blade tracking. Dont worry as the helicopter will still perform well as long as the blade tracking is adjusted as closely as possible. Note: It will not be necessary to adjust the Lower Main Rotor Blade tracking as fixed links are used between the rotor blade and swashplate.
Channel 5 Knob Description and Function
The transmitter included with your Blade CX2 is equipped with an optional-use Channel 5 knob (labeled as. CH 5) on the top right panel. This knob allows you to control function of the transmitters 5th channel. This channel remains unused for. flying the Blade CX2, however, it is available for use in controlling a variety of potential optional features. including actuation of an additional servo or certain electronic components. It allows full proportional control. of the 5th channel from approximately 0100% travel. The knob can be operated in either direction for control. You can use either the most clockwise (+) or most counterclockwise (-) position for 0 or 100% travel, and you will achieve approximately 50% travel with the knob in the middle position, pointing directly to the rear of the transmitter.

0% Travel

50% Travel

100% Travel

Transmitter and 4-in-1 Control Unit Receiver Binding and Fail-Safe
Binding is the process of programming the receiver to recognize the GUID (Globally Unique Identifier) code of a single specific transmitter. If you ever find that it is necessary to replace your transmitter or the 4-in-1 control unit in your model, it will be necessary for you to Bind the new transmitter or 4-in-1 control unit receiver to your existing transmitter or receiver for proper operation. During the binding process, the smart fail-safe (SmartSafe) positions of your system are also set. With SmartSafe, in case of loss of signal, the throttle will go to the preset position that was stored during the binding process and all other channels will hold their last position. And if the receiver (4-in-1 Control Unit) is powered on before the transmitter, all channels but throttle will go to the fail-safe positions that were stored during the binding process, while the throttle channel will not generate a pulse in order to prevent the ESC(s) from arming. Note: Because the SmartSafe positions are set during the binding process, it is important to set all channels to the preferred fail-safe positions before proceeding. In the case of the Blade CX2, we strongly recommend setting the throttle stick and throttle trim to their lowest positions, and the rudder, aileron and elevator channels to their neutral positions. Channel 5 should be set to your preferred position if you have chosen to utilize it. The following steps outline the binding process: Each time the transmitter is turned on, it enters Bind Mode for a few seconds. You can tell that the transmitter is in bind mode when you see the red LED located under the door on the bottom left front of the transmitter blink rapidly. Once the LED becomes solid, the transmitter is no longer in bind mode and will transmit normally.

LED Location

Note: For safety, disconnect both main motor plugs from the 4-in-1 control unit (as shown on page 16) before proceeding. Once the binding process is complete and the flight battery is unplugged from the 4-in-1 unit, reconnect the main motor plugs to 4-in-1 unit (as noted on page 19). In order to bind the 4-in-1 control units receiver to the transmitter, you must first insert the Bind Plug (included with your Blade CX2 and replacement 4-in-1 control units) into the BAT opening on the receiver. Then you will need to power on the 4-in-1 control unit by connecting the flight battery BEFORE powering the transmitter on.

When you connect the flight battery to the 4-in-1 unit with the bind plug inserted into the BAT opening on the receiver, you will see an orange LED blink rapidly on the receiver itself. Once the orange LED on the receiver begins to blink, turn on the transmitter. The transmitter will immediately enter bind mode. Then, once the orange LED on the receiver and the red LED on the transmitter turn solid, the 4-in-1 units receiver is bound to the transmitter. Now you will need to power down the 4-in-1 control unit and transmitter, and remove the bind plug from the receiver. Note: It is extremely important that you remove the bind plug from the receiver once it has been bound to the transmitter. If you do not remove the bind plug, the receiver will enter bind mode every time the 4-in-1 unit is powered on.
Main Motor Care and Installing the Optional Main Motor Heat Sink
The 180 motors used to power your Blade CX2 are of the closed endbell variety and do not require any special maintenance. We do, however, suggest that you allow the motors to cool to near ambient temperature between flights/battery pack changes to prevent accelerated motor wear due to excess motor heat. You will find the performance and life of the 180 main motors to be very good, however, installation of the optional Main Motor Heat Sink (EFLH1208) can help to further improve motor cooling during flight, resulting in improved motor performance and longer motor life. Installing the main motor heat sink takes only a few minutes following these steps: Installation of the main motor heat sink will require that you to temporarily remove the right-hand main motor from the main frame. This is easily accomplished by removing the two motor mounting screws found on the bottom of the main frame.
With the right-hand main motor removed from the frame, you can press the main motor heat sink into place near the top/end of the left-hand main motor. We recommend that you use Heat Sink Compound (EFLM1913) on any surfaces of the heat sink that make contact with the motor case to further improve the effectiveness of the heat sink. The wider end of the heat sink (more fins) must be placed toward the front of the helicopter.
You can now press the right-hand main motor into place in the heat sink and use the motor mounting screws. to re-install the motor on the main frame. Again, we recommend that you use Heat Sink Compound (EFLM1913) on any surfaces of the heat sink that make contact with the motor case to further improve the effectiveness of the heat sink.

Replacement Parts List

EFLH1250. . . . . . . . . . . . . . . . . . EFLB0990. . . . . . . . . . . . . . . . . . EFLC3110. . . . . . . . . . . . . . . . . . EFLC4000. . . . . . . . . . . . . . . . . . EFLH1022. . . . . . . . . . . . . . . . . . EFLH1024. . . . . . . . . . . . . . . . . . EFLH1055. . . . . . . . . . . . . . . . . . EFLH1058. . . . . . . . . . . . . . . . . . EFLRS60. . . . . . . . . . . . . . . . . . . EFLRS601. . . . . . . . . . . . . . . . . . EFLRS602. . . . . . . . . . . . . . . . . . EFLRSA100. . . . . . . . . . . . . . . . . EFLH1121. . . . . . . . . . . . . . . . . . EFLH1209. . . . . . . . . . . . . . . . . . EFLH1210. . . . . . . . . . . . . . . . . . EFLH1211. . . . . . . . . . . . . . . . . . EFLH1213. . . . . . . . . . . . . . . . . . EFLH1214. . . . . . . . . . . . . . . . . . EFLH1215. . . . . . . . . . . . . . . . . . EFLH1216. . . . . . . . . . . . . . . . . . EFLH1217. . . . . . . . . . . . . . . . . . EFLH1218. . . . . . . . . . . . . . . . . . EFLH1219. . . . . . . . . . . . . . . . . . EFLH1220. . . . . . . . . . . . . . . . . . EFLH1221. . . . . . . . . . . . . . . . . . EFLH1222. . . . . . . . . . . . . . . . . . EFLH1223. . . . . . . . . . . . . . . . . . EFLH1225. . . . . . . . . . . . . . . . . . EFLH1226. . . . . . . . . . . . . . . . . . EFLH1242. . . . . . . . . . . . . . . . . . EFLH1243. . . . . . . . . . . . . . . . . . EFLH1254. . . . . . . . . . . . . . . . . . EFLH1255. . . . . . . . . . . . . . . . . . EFLH1256. . . . . . . . . . . . . . . . . . EFLH1257. . . . . . . . . . . . . . . . . . Blade CX2 RTF Electric Coaxial Heli 7.4V 800mAh 2-Cell Li-Po, JST/Balance 2-3 Cell Li-Po Balancing Charger, 0.65A AC to 12VDC, 1.5 Amp Power Supply Bind Plug: BCX2 4-in-1 Control Unit, Receiver/ESC/Mixer/Gyro 2.4GHz: BCX2 LP5DSM 5-Channel Transmitter, 2.4GHz: BCX2 Transmitter Antenna, 2.4GHz: BCX2 6.0-Gram Super Sub-Micro S60 Servo Gear Set: S60 Case Set: S60 Standard Arm Set, Fine Spline: S60 Bearing 2x6x3mm (2): BCP, BCX/2 Mounting Accessories & Screwdriver: BCX/Motor w/8T 0.5M Pinion Left: BCX/Motor w/8T 0.5M Pinion Right: BCX/2 Outer Shaft & Main Gear Set: BCX/2 Shaft Retaining Collar Set: BCX/2 Bearing 4x6x3mm (2): BCX/2 Swashplate Set: BCX/2 Lower Rotor Head & Linkage Set: BCX/2 Servo Pushrod Set: BCX/2 Stabilizer Flybar Set: BCX/2 Lower Main Blade Set (2 pair): BCX/2 Upper Main Blade Set (2 pair): BCX/2 Landing Skid Set: BCX/2 Battery Support Set: BCX/2 Hardware Set: BCX/2 Body Mount Rod & Grommet Set: BCX/2 Inner Shaft w/Head/Hub: BCX/2 Inner Shaft Main Gear: BCX/2 Main Frame Set: BCX2 Front Body/Canopy: BCX2 Rear Body: BCX2 Complete Body Set: BCX2

Optional Parts List

EFLH1205. . . . . . . . . . . . . . . . . . EFLH1208. . . . . . . . . . . . . . . . . . EFLM1913. . . . . . . . . . . . . . . . . . EFLH1227. . . . . . . . . . . . . . . . . . EFLH1228. . . . . . . . . . . . . . . . . . EFLH1229. . . . . . . . . . . . . . . . . . EFLH1230. . . . . . . . . . . . . . . . . . EFLH1231. . . . . . . . . . . . . . . . . . EFLH1232. . . . . . . . . . . . . . . . . . EFLH1240. . . . . . . . . . . . . . . . . . EFLH1241. . . . . . . . . . . . . . . . . . EFLH1244. . . . . . . . . . . . . . . . . . EFLH1245. . . . . . . . . . . . . . . . . . EFLH1246. . . . . . . . . . . . . . . . . . EFLH1258. . . . . . . . . . . . . . . . . . EFLH1259. . . . . . . . . . . . . . . . . . EFLH1260. . . . . . . . . . . . . . . . . . EFLH1261. . . . . . . . . . . . . . . . . . EFLH1262. . . . . . . . . . . . . . . . . . Training Gear Set: BCX/2 Main Motor Heat Sink: BCX/2 Heat Sink Compound, 5g Front Body, Yellow: BCX Rear Body, Yellow: BCX Complete Body Set, Yellow: BCX Front Body, Police, Blue: BCX/2 Rear Body, Police, Blue: BCX/2 Complete Body Set, Police, Blue: BCX/2 Inner Shaft w/Aluminum Head/Hub: BCX/2 Inner Shaft for Aluminum Head/Hub: BCX/2 Aluminum Bearing Holder w/Bearing: BCX/2 Aluminum Lower Rotor Head Set: BCX/2 Aluminum Swashplate Set: BCX/2 Front Body, Marines w/o Decals: BCX/2 Rear Body, Marines w/o Decals: BCX/2 Complete Body Set, Marines w/Decals/Gun/Missiles: BCX/2 Decal Set, Marines: BCX/2 Gun and Missile Set: BCX/2
Please see your favorite retailer or visit our web site (www.E-fliteRC.com) to find the latest in new replacement and option parts releases for your Blade CX2. 44
Replacement and Optional Parts
2-3 CELL 7.4-11.1V LI-PO BALANCING CHARGER
7.4V 800mAh 2-Cell Li-Po EFLB0990

EFLC3110

Input: 11.5-15V DC

Output: 0.65A

7.4V 800mAh 2-Cell Li-Po, JST/Balance
2-3 Cell Li-Po Balancing Charger, 0.65A
AC to 12VDC 1.5 Amp Power Supply
6.0 Gram Super Sub-Micro S60 Servo

Bind Plug: BCX2

4-in-1 Control Unit, Receiver/ESC/Mixer/Gyro 2.4GHz: BCX2

EFLB0990

LP5DSM 5-Channel Transmitter, 2.4GHz: BCX2
Transmitter Antenna, 2.4GHz: BCX2

EFLC4000

EFLRS60

EFLH1022

EFLH1024
Bearing 2x6x3mm (2): BCP/P, BCX2

Training Gear Set: BCX/2

Main Motor Heatsink: BCX/2
Mounting Accessories and Screwdriver: BCX/2

EFLH1055

180 Motor w/8T 0.5M Pinion Left: BCX/2

EFLH1058

180 Motor w/8T 0.5M Pinion Right: BCX/2

EFLH1121

Outer Shaft and Main Gear Set: BCX/2

EFLH1205

EFLH1208

EFLH1209

Shaft Retaining Collar Set: BCX/2
Bearing 4x8x3mm (2): BCX/2

Swashplate Set: BCX/2

EFLH1210

EFLH1211

EFLH1213

EFLH1214

EFLH1215