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Programming examples - F3A model
• of control travel then briefly tap on the centre SET
key of the right touch pad.
• In order to attain the curve shape shown, raise this
point with the selection keys to approx. 0 % in the
inverse video value field in the "Point" line.
• Finally, round the characteristic curve by moving
the marker frame left, select with a brief tap on the
centre SET key of the right touch pad then change
the value from "Off" to "On" with the selection
keys.
If additional interpolation points between the left ("L")
and right ("H") end are necessary, repeat Steps 1 and
2 analogously.
Since F3A models normally have two aileron servos,
experience has shown that it is beneficial to move
both ailerons upward somewhat when landing. In the
process, the model usually approaches somewhat
slower and, above all, more steadily for the landing.
In order to do this it is necessary to program mixers
through the menu …
»Free mixers« (beginning page 209)
… accordingly.
The ailerons are extended as landing assistance
depending on the position of the throttle stick, start-
ing from approximately half throttle toward idle. The
further the stick is moved toward idle, the more the ai-
lerons deflect upward. Just the opposite applies when
"throttling"; the ailerons are retracted again in order to
prevent a sudden rise of the model.
In order to prevent the model from climbing with the
aileron landing flaps extended, the elevator must be
mixed in somewhat.
For this purpose, set the two linear mixers shown in
the following display.
The activation of the mixers takes place with one and
the same switch, such as "8", to which both mixers
must be assigned with identical switching direction.
5
LinearMIX 1
type
C1
from – Begr. +
EL
C1
??
??
??
??
??
??
––––
LinearMIX 2
LinearMIX 3
LinearMIX 4
LinearMIX 5
to
Adjust
Tr
––––
––––
Then switch to the second respective display screen
in order to adjust the respective mixing degrees. In
both cases the mixer neutral point is at the C1 control
centre.
Enter 0 % above the control centre after selection of
the ASY field for both mixers and below the control
centre toward idle for:
MIX 1: -60 % ... -80 % and
MIX 2: -5 % ... -10 % ...
Example Linear MIX 1:
C1
Mix input
0%
Offset
0%
5
Linear MIX 1
–70%
SYM ASY
SET
STO
With this, the base setup model of an F3A model is
concluded.
Compensation of model-specic errors
Unfortunately, there are nearly always minor model-
specific "errors" through the mixers of a computer
remote control which must be compensated for. How-
ever, before you begin with these settings, it should
be ensured that the model is faultlessly constructed,
optimally balanced over the longitudinal and trans-
verse axes and the down thrust and side thrust are
correct.
Inuence of longitudinal and transverse axes by
the rudder
The actuation of the rudder often influences the be-
havior of the longitudinal and transverse axes. This is
particularly disruptive in so-called knife-edge flying,
in which the lift of the model with the rudder deflected
should be created by the fuselage alone. In the pro-
cess, the model can rotate and change directions as
though it were controlled with the ailerons and eleva-
tor. Therefore, a correction over the transverse axis
(elevator) and/or the longitudinal axis (ailerons) must
be made, if applicable.
This can also be done easily with the »Free mixers«
available in the
mc-32 HoTT system. For example,
if the model drifts away to the right over the longitudi-
nal axis with the rudder extended in knife-edge flying,
the aileron can be deflected slightly to the left with the
mixer. Changes in direction over the transverse axis
can be performed analogously with a mixer on the
elevator:
• Correction over the transverse axis (elevator)
Linear MIX 3: "Rudd Elev"
Asymmetric setting. The appropriate values must
be tested in flight.
• Correction over the longitudinal axis (aileron)
Linear MIX 4: "Rudd AIL"
Asymmetric setting. The appropriate values must
be tested in flight.
Relatively small mixer values are usually sufficient
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