The Concept
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How are mixers activated?
This is done at the servo assignment stage. For ex-
ample, you might be in Menu 2: assigning servos,
defining servo 2 as HEADMIX. Simply assigning the
servo in this way has the effect that servo 2 is con-
trolled by the signals generated by the mixer of that
name - in this case HEADMIX. The mixer is therefore
activated right at the assigning stage.
Once the mixer has been assigned all you have to do
is set the value of the individual inputs for the mixer,
or switch off inputs which you don’t require.
What happens if the same mixer is used more
than once?
This certainly occurs with model helicopters, e.g.
when the swashplate is controlled by three or four
servos.
The basic rule is this: you can assign any of the
ready-made mixers as often as you wish. Every time
you assign the mixer a new copy of that mixer is set
up; this means that each „copy“ of the mixer can have
its own independent settings.
If HEADMIX is assigned to four swashplate servos,
this simply means that four mixers have been set up,
all of which can be set to different values.
Just how versatile are the free mixers?
Each of the free mixers has eight inputs. If even that is
not enough you can also „cascade“ them, which
means setting one or more mixers (free or ready-
made) in front of another mixer input. The result is an
(almost) unlimited diversity of mixing facilities, and if
any modeller has discovered a limit to the system, we
have not yet - to the best of our knowledge - heard of
it.
A few words about ...
the THROTTLE function for heli-
copters with I.C. motors
In order to understand throttle control in model heli-
copters we must first clarify a few terms and inter-
related factors.
Throttle curve
(collective pitch - throttle mixer)
The throttle curve is an option of the
COLLECTIVE PITCH transmitter control. It can
be set differently for each flight mode.
Exception: in flight mode 5 (AUTO-ROTATION)
a fixed value for throttle is used instead of the
throttle curve.
Direct throttle
Direct throttle is also an option of the
COLLECTIVE PITCH control. If you switch on di-
rect throttle, the IDLE-UP control provides „direct“
control of the throttle, and the set throttle curves
have no effect.
Exception: if you switch to AUTO-ROTATION,
the fixed throttle value set for this flight mode is
used.
Idle-up
The transmitter control for idle-up defines the
maximum value for throttle. It is probably best to
consider this function as a form of throttle limiter.
If you are still not quite clear about the inter-
connection between these factors, you can read
more on the subject under the title „How idle-up
works“.
TIP:
THROTTLE CURVE and DIRECT THROTTLE do
not appear as options for the COLLECTIVE PITCH
control until and unless you assign
DYN. THROTTLE to the THROTTLE servo.
In the same way the transmitter control IDLE-UP
does not fulfil its function until the throttle servo
has been assigned..
That is the reason why the first step in setting up a
new model is to assign all the transmitter controls and
servos. All the adjustments are made subsequently.
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