E-flight Blade CX3 MD 520N RTF Owner's Manual
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E-flight Blade CX3 MD 520N RTF Owner's Manual

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© 2008 Horizon Hobby, Inc .
4105 Fieldstone Road
Champaign, Illinois 61822
Horizon Hobby Deutschland GmbH
Hamburger Strasse 10
DSM and DSM2 are trademarks or registered trademarks of Horizon Hobby, Inc . The Spektrum trademark is
used with permission of Bachmann Industries, Inc . Spektrum radios and accessories are exclusively available from
MD 520N
is a registered trademark or trademark of MD Helicopters Inc . and is used under license to
®
SEAHAWK and the Seahawk helicopter design are trademarks of Sikorsky Aircraft Corporation . They are licensed
throughout the world to Horizon Hobby, Inc .
Bell and Jet Ranger are either registered trademarks or trademarks of Textron Innovations Inc . in the USA and/or
other countries, used under license .
Revised 11/08
(877) 504-0233
Horizon Hobby UK
Units 1-4 Ployters Rd
Staple Tye
Harlow, Essex
CM18 7NS
United Kingdom
25335 Elmshorn
Germany
Patents pending
Horizon Hobby, Inc .
Horizon Hobby, Inc .
www.E-fliteRC.com
Length . . . . . . . . . . . . . . . . . . . . . . . 16 .4 in (415mm)
Height . . . . . . . . . . . . . . . . . . . . . . . 7 .2 in (180mm)
Main Rotor Diameter . . . . . . . . . . . . . 13 .6 in (345mm)
Weight RTF w/Battery . . . . . . . . . . . . 8 .0 oz (227 g)
Main Motor . . . . . . . . . . . . . . . . . . . . 180 (2 installed)
Battery . . . . . . . . . . . . . . . . . . . . . . . 2S 7 .4V 800mAh Li-Po (included)
Transmitter . . . . . . . . . . . . . . . . . . . . 2 .4GHz DSM2 5-channel (included)
On-Board Electronics . . . . . . . . . . . . . 3-in-1/mixer/ESC/heading lock gyro (installed)
Servos . . . . . . . . . . . . . . . . . . . . . . . S60 Super Sub-Micro (2 installed)
Receiver . . . . . . . . . . . . . . . . . . . . . . Spektrum
14475 .1

Specifications

6100e (installed)
™

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Summary of Contents for E-flight Blade CX3 MD 520N RTF

  • Page 1: Specifications

    © 2008 Horizon Hobby, Inc . 4105 Fieldstone Road Champaign, Illinois 61822 (877) 504-0233 Horizon Hobby UK Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS United Kingdom Horizon Hobby Deutschland GmbH Hamburger Strasse 10 25335 Elmshorn Germany Patents pending DSM and DSM2 are trademarks or registered trademarks of Horizon Hobby, Inc .

  • Page 2: Table Of Contents

    Blade CX3 MD 520N RTF Contents ........

  • Page 3: Additional Safety Precautions And Warnings

    Install the optional Training Gear Set (EFLH1205; strongly recommended if this is your first helicopter model) protected for this purpose . q Familiarize yourself with the controls • Never lick or place any portion of your model in your mouth as it could cause serious injury or even death. q Find a suitable area for flying Blade CX3 MD 520N RTF Contents Flying Checklist Item Description Not Available Separately Blade CX3 MD 520N RTF Airframe Please note this checklist is not intended to be a replacement for the content included in this instruction manual .

  • Page 4: Battery Warnings And Guidelines

    Battery Warnings and Guidelines • 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 While the 7.4V 800mAh 2-cell Lithium Polymer Battery Pack (EFLB0990) included with your place it in a safe, open area away from flammable materials to observe it for at least 15 minutes.
  • Page 5 Battery Charging Input power for the charger can also be supplied from a small 12V gel cell or car battery . It is important that you only charge the included 7.4V 800mAh 2-cell Li-Po Battery Pack (EFLB0990) with the included 2-3 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.

  • Page 6: Charge Errors And Indications

    Charge Errors and Indications 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 In the event that both the red and green LEDs flash, a charge error has occurred.

  • Page 7: Installing The Flight Battery

    Installing the Flight Battery Center of Gravity Use the included hook and loop material for mounting the Li-Po battery pack . The “hook” material is already installed Once the battery has been properly installed and secured you will need to check the helicopter’s center of gravity . If on the battery frame stop .

  • Page 8: Transmitter Control Identification

    Transmitter Control Identification Control Test Note: Each time before you fly you should ALWAYS turn the transmitter on before connecting the flight battery to Although each Blade CX3 MD 520N model is test flown at the factory, it is a good idea to test the controls prior to the unit . After each flight, be sure that you always disconnect the flight battery from the unit before powering the the first flight to ensure none of the servos, linkages or other parts were damaged during shipping and handling .
  • Page 9 Position the helicopter to view it from the FRONT When the stick is pulled back, the servo on the right should pull the swashplate downward . Move the elevator control stick on the transmitter forward and back to check elevator pitch control . When the stick Mode 2 Mode 1 is pushed forward, the servo on the right side should push the swashplate upward .
  • Page 10 Move the right-hand control stick on the transmitter left and right to check aileron roll control . When the stick is When the stick is pushed to the right, the servo on the left should pull the swashplate downward . pushed to the left, the servo on the left side should push the swashplate upward .

  • Page 11: 3-In-1 Control Unit Description, Arming And Motor Control Test

    3-in-1 Control Unit Description, Arming and Motor Control Test 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, 6 and 7 should be positioned as The unique 3-in-1 Control Unit installed on your Blade CX3 MD 520N is a lightweight combination of a main motor shown to ensure proper servo reversing .
  • Page 12 The following checklist contains the steps you must follow to ensure proper arming and operation of the 3-in-1 unit q After confirming that the direction of rotation for both rotor blades is correct, it is best to confirm that both rotor as well as proper motor control response: blades respond properly to rudder control inputs .

  • Page 13: Installing The Optional Training Gear

    Installing the Optional Training Gear • 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 If the Blade CX3 MD 520N is your first helicopter model, we suggest that you install the optional easier to thread the screw into the backside of the attachment .

  • Page 14: Understanding The Controls

    Understanding the Controls • After ensuring that the rods are secure in the base, adjust the positions of the attachments on the landing skids so that the base is centered under the main shaft of the helicopter . Once confirming the base is centered under If you are not familiar with the controls of your Blade CX3 MD 520N, please take a few minutes to familiarize the main shaft, make sure that each of the landing skids is still firmly installed in the mounts of the battery yourself with them before attempting your first flight .
  • Page 15 Moving the rudder stick to the left will turn (yaw) the nose of the helicopter to the left about the axis of the main The elevator stick controls both elevator fore and aft pitch . Pushing the stick forward will pitch the nose of the shaft .

  • Page 16: Choosing A Flying Area

    Choosing a Flying Area The aileron stick controls roll . Moving the stick left will roll the helicopter to the left, causing the helicopter to fly to the left . When you are ready for your first flight, you will want to select a large, open area that is free of people and obstructions .

  • Page 17: Main Motor Proportional Mix Trimmer Pot Description And Adjustment

    Main Motor Proportional Mix Trimmer Pot Description and Adjustment or other 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 The Main Motor Proportional Mix Trimmer Pot can be found on the left side of the 3-in-1 control unit .

  • Page 18: Gyro Gain Trimmer Pot Description And Adjustment

    Gyro Gain Trimmer Pot Description and Adjustment • 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 The “gain” trimmer pot adjusts the gain setting value of the piezo gyro used to aid in keeping the tail of the counterclockwise (-) .

  • Page 19: Upper Main Rotor Blade Tracking Adjustment

    Upper Main Rotor Blade Tracking Adjustment Caution: Be sure to maintain a safe distance from the helicopter (approximately 10–15 feet) when Tips Out Of Track— tracking the Upper Main Rotor Blade. Adjustment Necessary Your Blade CX3 MD 520N 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 .

  • Page 20: Channel 5 Knob Description And Function

    Channel 5 Knob Description and Function Transmitter and Receiver Binding and Fail-Safe The transmitter included with your Blade CX3 MD 520N is equipped with an optional-use “Channel 5” knob (labeled Binding is the process of programming the receiver to recognize the GUID (Globally Unique Identifier) code of a as “CH 5”) on the top right panel .

  • Page 21: Main Motor Care And Installing The Optional Main Motor Heat Sink

    • In order to bind the AR6100e receiver to the transmitter, you must first insert the Bind Plug (included with your Main Motor Care and Installing the Optional Main Motor Heat Sink Blade CX3 MD 520N) into the “BAT” opening on the receiver . Then you will need to power on the receiver by connecting the flight battery into the 3-in-1 control unit BEFORE powering the transmitter on . The 180 motors used to power your Blade CX3 MD 520N are of the closed end-bell variety and do not require any special maintenance .

  • Page 22: 2008 Official Ama National Model Aircraft Safety Code

    2008 Official AMA National Model Aircraft Safety Code FREE FLIGHT GENERAL 1 . I will not launch my model aircraft unless I am at least 100 feet downwind of spectators and automobile parking . 1 . A model aircraft shall be defined as a non-human-carrying device capable of sustained flight in the atmosphere . It shall not exceed limitations 2 .

  • Page 23: Replacement Parts List

    Replacement Parts List Replacement and Optional Parts EFLH2000 Blade CX3 MD 520N RTF Electric Coaxial Heli EFLB0990 7 .4V 800mAh 2-Cell Li-Po, JST/Balance EFLC3110 2-3 Cell Li-Po Balancing Charger, 0 .65A EFLC4000 AC to 12VDC, 1 .5 Amp Power Supply...

  • Page 24: Exploded View Parts Listing

    Exploded View Parts Listing Exploded View Exploded View Description (Quantity Exploded View Description (Quantity Included In Item Included In Item Reference Required) Reference Required) Number Number Number Number 001 Stabilizer Flybar Rubber Tip (2) EFLH1219 031 3in1CtrlUntMixer/ESC/Heading Lock Gyro EFLH2001 002 Stabilizer Flybar Weight (2) EFLH1219 032 Bearing 4mm x 8mm x 3mm (2...

  • Page 25: Safety Precautions

    Warranty Period Inspection or Repairs Horizon Hobby, Inc ., (Horizon) warranties that the Products purchased (the “Product”) will be free from defects in If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA) . materials and workmanship at the date of purchase by the Purchaser .

  • Page 26: Declaration Of Conformity

    United States Declaration of Conformity (in accordance with ISO/IEC 17050-1) Electronics and engines requiring inspection or repair should be shipped to the following address: No . HH20081014 Horizon Service Center 4105 Fieldstone Road Products: E-flite Blade CX3 RTF and BNF Champaign, Illinois 61822 Item Numbers: EFLH2000, EFLH2080...

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