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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
or other obstacles .
• IN THE UNFORTUNATE EVENT OF A CRASH OR ROTOR BLADE STRIKE, NO MATTER
HOW MINOR OR MAJOR, YOU MUST LOWER BOTH THE THROTTLE 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.
• It is extremely important when hovering and flying the Blade CX3 MD 520N to be aware of the power
level of the Li-Po battery pack. If at 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 CX3 MD 520N, you can attempt more
advanced maneuvers including:
Forward Flight
Backward Flight
Pirouettes
Skidding Takeoffs
Skidding Landings
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 .
• In a stable hover, with the rudder trim centered and no rudder control input, note the direction the nose of
the helicopter is drifting . 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 (+) .
Main Motor
Proportional Mix
Trimmer Pot
