GRAUPNER 33124 Manual page 279

Asymmetric setting. The appropriate values must be
tested in fl ight.
Relatively small mixer values are usually suffi cient
in this case, the range lies below 10 %, but can vary
from model to model. With the use of curve mixers, the
mix ratios can be adapted even more precisely to the
corresponding throw of the rudder. Again, no values are
indicated for this, because this would be model-specifi c.
Vertical ascent and descent
Some models have a tendency to deviate from the ideal
line in vertical ascents and descents.
In order to compensate for this, it is necessary to have a
center position of the elevator dependent on the throttle
joystick position. If, for example, the model begins to
hold off on its own in the vertical descent with a throttled
motor, some elevator must be mixed in at this throttle
position.
For this purpose, program a free mixer "C1
The corresponding mixer values are normally under 5%
and must also be tested in fl ight.
Turning away over the longitudinal axis in idle
If the throttle is reduced, the model may begin to turn
away over the longitudinal axis in idle. This can be
counteracted with the aileron.
However, the more elegant solution is to correct this
effect with a free mixer "C1 Ail".
The input values here are usually very low (approx. 3 %)
and the settings should be made in calm weather. It
often suffi ces to only use the mixer between half throttle
and idle. Therefore program the mixer asymmetrically, if
applicable.
Turning away with the ailerons/landing fl aps
extended
If you move the ailerons upward for the landing, the
result is often a turning away over the longitudinal axis
due to various servo paths of the aileron servos or
due to design precisions. Therefore, the model begins
to automatically hang the left or right wing. This is
also easy to compensate for with a mixer "C1
depending on the position of the ailerons/landing fl aps.
The mixer must be switched on and off with the same
switch with which you can switch the aileron/landing
fl ap function on and off (see previous page). Therefore,
it only works with the aileron/landing fl ap function
activated. The appropriate value must be tested in fl ight.
One additional comment regarding ...
"FAIL-SAFE setting"
You utilize the safety potential of this option by the
Elev".
safety potential by programming at least the motor
throttle position for combustion models to idle and the
motor function for electrically powered models to stop
for a Fail-Safe case. Then, in the event of a failure,
the model cannot become independent as easily and
cause property damage or even personal injury. If
you additionally program the fail-safe positions of the
rudders to that the model fl ies in gently sinking circles
in the event of a failure, there is a good chance that
the model even lands relatively gently on its own in the
event of a continuing connection failure. You also have
suffi cient time to re-establish the connection if the entire
2.4 GHz frequency band is temporarily disrupted.
In the receiver's condition as supplied, however, the
servos maintain their last validly recognized position
("hold") in the event of a fail-safe situation. As described
on page 196, you can defi ne a "Fail-safe position" for
each of the individual servo outputs of your receiver
(Fail-safe mode).
Summary
The settings described on this page are especially
useful for the "expert" who would like to have an entirely
neutral, precisely fl ying F3A model acrobatic model at
AIL"
his or her disposal.
It should be mentioned this takes a lot of time, effort,
instinct and know-how. Experts even program during
the fl ight. To do this, however, is not suggested for an
advanced beginner who ventures into an F3A acrobatic
model. It would be best to turn to an experienced pilot
and carry out the settings step by step until the model
has the desired neutrality in its fl ight behavior. Then the
pilot can begin to learn the not always easy to perform
acrobatic fi gures with a model which fl ies faultlessly.
Detail program description - Control adjust 279