speed should remain constant, matching the hover
speed setting.
If the speed decreases while climbing even though the
drive is at maximum output and no additional power
can be provided, reduce the maximum blade angle
while the pitch control stick is fully deflected (value
of point H). Conversely, if the speed increases while
climbing, increase the pitch angle. In the PIT.CRV
graph display, use the pitch control stick to move the
vertical line to point H and change its value.
This picture shows changes of the maxi-
mum pitch setting.
Output
Control travel
Hovering
point
Place the throttle in center position to make the mod-
el hover. If the model doesn’t hover unless the pitch
control stick is above center position, slightly increas-
ing the pitch value during hovering (i.e. point 1) un-
til the model hovers when the control stick is in the
center position. If the model doesn’t hover unless the
pitch control stick is below center position, reduce the
pitch angle.
In certain circumstances, it may be necessary to
adjust the carburetor opening at the hovering point
(point 1) of the THR.CRV display.
This picture illustrates the change of the
hovering point, that is the minimum and
maximum pitch were left at -100 % and
+100 %.
Output
Control travel
Modify these settings until the speed remains con-
stant over the entire control travel between hovering
and climbing.
Adjustments for Descending
Descent is adjusted so that the speed remains con-
stant while the model descends from forward flight
at a great height while the pitch is completely pulled
back and. Set the minimum pitch (point L) so that the
model descends at an angle of 60-70°. In the PIT.CRV
graph display, use the pitch control stick to move the
vertical line to point L and change its value.
This picture showsan example of changes
of the minimum pitch setting.
Hovering
point
Control travel
Output
Once this flight response is achieved, switch to the
THR.CRV display graph and adjust the minimum
throttle value (point L) so that the speed neither in-
creases nor decreases. The coordination of throttle
and pitch is now complete.
Safety Instructions:
Before starting the motor, make sure that the throt-
tle limiter is completely closed so that the carburettor
only reacts to the throttle trim lever.
If the carburetor is opened too wide when the trans-
mitter is turned on, a visual and acoustic warning will
be generated and the automatic switch on of the RF
module will be blocked. This is because if the carbu-
rettor is open too wide or if the speed controller is set
too high, there is a danger that the motor will start at
a high speed once it is turned on, and the centrifugal
clutch will engage immediately.
Always hold the rotor head tightly when starting.
If the motor accidentally starts when the carburettor
is open too wide, do not panic! Keep a firm grip on
the rotor head and do not let go. Immediately turn
down the throttle limiter even if there is a danger of the
drive becoming damaged since pilots are responsi-
ble for ensuring the helicopter does not move in an
uncontrollable manner.
The cost of repairing a clutch, transmission or at the
motor are negligible in comparison to the injury and
damage that can arise from the rotor blades of a mod-
el helicopter flying around uncontrollably.
Make sure that no one else is within the hazard
zone of the helicopter.
In addition, do not switch from idling to the flight
setting while the motor is operating at a high speed.
This sudden rotor speedup prematurely wears out
the clutch and gearing. Additionally, the main rotor
blades (generally loosely hinged) would not smoothly
follow such a sudden acceleration and will swing out
of their normal position and risk striking the tail boom.
After starting the motor, slowly accelerate the system
speed with the throttle limiter.
164 Function menu | Helicopter model - Throttle curve
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