2-In-1 Control Unit Description, Arming And Motor Control Test - E-flight Blade SR RTF Airframe Instruction Manual

Dip Switch 8*
Up – 1 20-degree Cyclic Collective Pitch Mixing (CCPM)
Down – Standard mixing
*Only functions when in helicopter mode.
Dip Switch 9*
Up – Rudder/Elevator mixing
Down – No mixing
*Only functions when in airplane mode, and no function if switch 10 is in the up position.
Dip Switch 10*
Up – Elevator/Aileron mixing
Down – No mixing
*Only functions when in airplane mode, and no function if switch 9 is in the up position.
If the controls still do not respond properly after ensuring the dip switch positions are correct, you should also check
the servo connections to the receiver. The servos should be connected to the corresponding channel on the receiver as
follows (when viewing the helicopter from behind):
AILE (Aileron) Channel – L eft-hand rear aileron servo
ELEV (Elevator) Channel – F orward elevator servo
AUX1 (Pitch) Channel – R ight-hand rear pitch servo
Once you've confirmed the proper dip switch positions and servo connections, all controls should be functioning
properly. However, if you continue to encounter any problems with your Blade SR responding properly to the
transmitter, do not fly. Call Horizon Hobby's Product Support staff at 1-877-504-0233, Horizon Hobby UK at +44 (0)
1279 641 097 or Horizon Technischer Service, Germany at +49 4121 46199 66.
If you've confirmed proper control operation of your Blade SR, unplug the flight battery and reconnect the main and tail
motors to the 2-in-1 unit, taking care to connect them to the proper leads using the markings on the label for reference.
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2-in-1 Control Unit Description, Arming and Motor Control Test

Your Blade SR is equipped with a lightweight combination of main motor and tail motor electronic speed controls
and main motor and tail motor proportional mixer. The 2-in-1 has an 8-amp brushless ESC for the main motor that is
specifically designed for use in helicopter models. The ESC is not programmable for use in other applications; however,
it is equipped with features and functions that optimize its performance for the Blade SR. These features and functions
include:
• "Soft" Low Voltage Cutoff
The ESC features a "soft" low voltage cutoff (LVC) that occurs when the battery reaches approximately 9V
under load. This helps prevent "deep" over-discharge of the Li-Po battery during use. Please see the Battery
Warnings and Guidelines section for more information regarding the soft LVC feature and how to prevent over-
discharge of the Li-Po battery.
• Soft (Slow) Start
The soft (slow) start function of the ESC is intended to help prevent potential damage of the Gear train, motor
and ESC by slowly increasing power to the motor (particularly when the rotor blades are not already spinning).
The first time you power up the ESC after it has been powered on and armed, it will take approximately 15
seconds for the ESC/motor to reach the power level you initially set with the throttle stick/curve. This means
you will need to wait approximately 15 seconds before attempting any aggressive maneuvering to allow the
power system to reach the set level of power first.
Any time (after the initial soft startup occurs) the ESC/motor have been powered down completely (to 0%
power) for approximately 15 seconds or more, the soft start will occur again. This is particularly helpful if
you land the helicopter to make an adjustment as you will not need to rearm the ESC in order to perform a
soft startup. It is simply best to wait approximately 15 seconds before powering up the ESC/motor again for
flight.
• Fast Start
The fast start function of the ESC allows any level of power to be applied almost immediately after ESC/
motor have been powered down completely (to 0% power) for any amount of time less than approximately
15 seconds. This is particularly helpful if you accidentally bump the Throttle Hold switch or when aborting an
auto-rotation attempt as it will allow the ESC/motor to reach any power level you have set with the throttle
stick/curve almost immediately when the Throttle Hold switch is set back to the OFF (0) position.
The following checklist contains the steps you must follow to ensure proper arming and operation of the 2-in-1 unit, as
well as proper motor response.
• Before each flight ALWAYS turn the transmitter on before connecting the flight battery to the 2-in-1 unit. Never
connect the flight battery to the 2-in-1 unit before powering the transmitter on first. After each flight, always
disconnect the flight battery from the 2-in-1 unit before powering the transmitter off.
Note: The antennas exiting the Spektrum AR6100e receiver should extend outward (to the left and right of the
helicopter) as much as possible for the best overall performance. Be sure to double-check the position
and orientation of both antennas before each flying session, especially if the helicopter was taken out of
a box or carrying case.
• Both the throttle (left-hand) stick and throttle trim MUST be in their lowest possible position in order for the
2-in-1 unit to arm. The flight mode (F MODE) switch must also be in the normal (0) flight mode position with
the switch toggled toward the back of the transmitter for the unit to arm.
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 (reference Transmitter Control Identification on page 13).
• Turn the transmitter on and ensure it has adequate 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 2-in-1 unit.
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