EN
18
If the nose of the helicopter is drifting to the left or right, you will need to adjust the rudder trim. Adjust the tail rotor proportional mix if
you experience any diffi culties 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 SR is your fi rst single-rotor and/or collective pitch helicopter model, it may be best to have an experienced helicopter pilot
trim the model for you before making your fi rst fl ight.
Note:
You can use the throttle trim to adjust the throttle and collective pitch values for a given throttle stick position. For example,
raising the throttle trim will allow the model to hover at a lower throttle stick position.
• Once you have the Blade SR properly trimmed and maintaining a stable low-level hover, practice using the rudder, elevator and
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.
• When comfortable with hovering the Blade SR at low-levels of altitude just a few inches off the ground, you can transition to hovering
and fl ying 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 fl ight characteristics of the helicopter when it is fl ying out of “ground effect.”
• Don’t be afraid to set the helicopter down on the ground quickly by lowering the throttle when approaching obstacles to help prevent
main rotor blade strikes. Also, the optional training gear set 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 when it is installed.
• If at any time during fl ight you feel like the helicopter is drifting out of control, it is best to return all controls to neutral and to lower
the throttle stick and trim completely or to activate throttle hold. This will help to reduce the amount of damage that may be caused
in the event of a crash.
NOTICE: Activating throttle hold (in any fl ight mode) in the event of a crash could result in damage to the ESCs in the 2-in-1 unit, which
may require replacement of the 2-in-1 unit.
Note: Crash damage is not covered under warranty.
• It is extremely important when hovering and fl ying the Blade SR 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 fl ight, or has lost the ability to maintain hover or
fl ight due to signifi cant loss of power, 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 fl ight times, loss of power output or
failure of the pack entirely.
Tail Rotor Proportional Mix Trimmer Pot Adjustment
The proportional trimmer pot adjusts the amount of tail motor to
mainmotor mixing.
After establishing a stable hover, quickly advance the throttle/collective
stick upward to “pop” the helicopter up a few feet in altitude. During the
abrupt increase in altitude, note which direction the nose of the helicopter
may yaw/turn. If the nose of the helicopter does not yaw in either direc-
tion by a signifi cant amount, no adjustment is necessary. If the nose of
the helicopter yaws to the left, you will want to increase the amount of
tail motor to main motor mixing. By turning the proportional trimmer pot
clockwise (+), you increase the tail motor/rotor rpm for a given main
motor/rotor rpm. This increase in tail motor/rotor rpm will help to push
the nose of the helicopter to the right when there is an abrupt change in
torque.
If the nose of the helicopter tries to yaw to the right, decrease the tail rotor proportional mix by turning the proportional trimmer pot
counterclockwise (-).
Note:
You must always power down the 2-in-1 control unit before making adjustments to the proportional mix trimmer pot. Any
changes made to the trimmer pot will not take effect until the 2-in-1 unit is rearmed.
Proportional Pot
