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This diagram shows only the
change to the hover point, i. e. col-
lective pitch minimum and maximum
are both left at -100 %
or +100 %.
Modify these settings until they really result in a
constant rotational speed over the full control range
between hovering and climbing flight.
Descent setting
The descent setting should now be configured by
placing the model in a steady descent from forward
flight at a considerable altitude by fully reducing col-
lective pitch; adjust the collective pitch minimum value
(point "L") so that the model descends at an angle of
60 ° ... 70 °. Therefore, on the "Pitch" graph page, put
the vertical line on Point "L" by moving the pitch stick
then change this point's value appropriately with the
selection keys of the right four-way button.
This diagram shows only the
changes when setting the minimum
collective pitch value.
Once the model can fly this maneuver properly, set
the value for "Throttle min" – the value for point "L" on
the graph page for "C1 Throttle" – so that the rota-
tional speed neither increases nor decreases. This
completes the set-up procedure for throttle and col-
lective pitch.
Some important closing remarks
Before starting the motor, ensure that the throttle
limiter is fully closed: this ensures that the carburetor
now responds only to the C1 trim lever. There will be
200 Program description - Helicopter mixer
a visual and an acoustic warning if the carburetor is
+100%
open too wide when the transmitter is switched on.
Otherwise, if the carburetor or speed controller is
open too far when the motor starts, there is a danger
that the motor will run up to speed immediately after
starting, and the centrifugal clutch will engage imme-
100%
1
2
3
4
5
Control travel
diately.
Accordingly,
Nevertheless, if the motor is accidentally started with
the carburetor too wide open, the golden rule is this:
Hold the rotor head securely!
Instead, close the throttle limiter immediately, even
if this risks damaging the drive system (in the worst
case scenario).
+100%
The costs of repairing a clutch, a gearbox or even
Hover
the motor itself are negligible in comparison to the
point
injuries and damage that an uncontrolled model heli-
copter can cause if it is allowed to thrash about with
spinning rotor blades.
100%
1
2
3
4
5
Control travel
Always make sure no other person
The switchover from idle to a flight setting with in-
creased system rotational speed must not take place
abruptly. This will cause the rotor to accelerate very
quickly, resulting in premature wear to the clutch and
gear train. Since the main rotor blades are generally
mounted on a freewheeling unit, they will be unable
to keep pace with such rapid acceleration; they will
respond by swinging far out of their normal position
and may even cause a boom strike.
always hold the rotor head
firmly when starting.
Don't panic!
Don't let go!
YOU must ensure
the helicopter never moves
in an uncontrolled manner.
is present in the
helicopter's hazard area.
Therefore, after the motor is started, system rotation-
al speed should be increased s l o w l y by way of the
throttle limiter. If a switch has been assigned to the
throttle limiter, always ensure the »Control adjust«"
menu, page 122, is used to program a time con-
stant of about 5 seconds to run up system rotational
speed (opening the throttle limiter). Do not, however,
program a delay for closing the throttle limiter. Leave
the default value of "GL" in the "Type" column alone,
however, to configure this setting globally for all flight
phases.
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