Graupner Hendheld RC 2.4 GHz No. of channels: 6 33112 User Manual
Product codes
33112
148 Programming example - fi xed-wing model
“Servo settings” menu
(page 72)
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rev
cent
+
trav
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100% 100%
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S4
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… ... you can set various parameters relating to the ser-
vos, i. e. “direction of rotation”, “neutral setting” and
“servo travel”, to suit the requirements of the model.
By “requirements” we mean adjustments to servo centre
and servo travel which are needed to compensate for
minor tolerances in servos and slight inaccuracies on
the model itself.
vos, i. e. “direction of rotation”, “neutral setting” and
“servo travel”, to suit the requirements of the model.
By “requirements” we mean adjustments to servo centre
and servo travel which are needed to compensate for
minor tolerances in servos and slight inaccuracies on
the model itself.
Note:
The facilities provided in this menu for setting asym-
metrical servo travels are NOT intended as a means of
setting up differential travel on ailerons and / or camber-
changing fl aps. There are more suitable options for
this in the form of specifi c functions in the “Fixed-wing
mixers” menu; see the fi rst two options in the picture on
the right.
The facilities provided in this menu for setting asym-
metrical servo travels are NOT intended as a means of
setting up differential travel on ailerons and / or camber-
changing fl aps. There are more suitable options for
this in the form of specifi c functions in the “Fixed-wing
mixers” menu; see the fi rst two options in the picture on
the right.
Once you have completed the settings described thus
far, a fi xed-wing or powered model aircraft (the latter
if you enter the idle direction of the throttle stick in the
“Motor at Ch 1” line of the “Basic settings” menu) will,
in principle, fl y.
However, there are no “refi nements” in this set-up, and
it is the refi nements which will give you more long-term
pleasure in your fl ying. Assuming that you are already
capable of controlling your model safely, it’s time to get
a taste of these extra facilities; to this end we now move
far, a fi xed-wing or powered model aircraft (the latter
if you enter the idle direction of the throttle stick in the
“Motor at Ch 1” line of the “Basic settings” menu) will,
in principle, fl y.
However, there are no “refi nements” in this set-up, and
it is the refi nements which will give you more long-term
pleasure in your fl ying. Assuming that you are already
capable of controlling your model safely, it’s time to get
a taste of these extra facilities; to this end we now move
on to the …
“Fixed-wing mixers” menu
(pages 88 … 93)
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a i l
a i l
a i l
d i f f a i l e .
rudd
flaps
flaps
brak
brak
brak
brak
brak
elev
flap
aile
flap
aile
elev
elev
flap
elev
flap
flap
aile
elev
elev
flap
d i f f – r e d
d i f f – r e d
aile
d i f f f l a p s
Note:
This menu will show a varying range of options depend-
ing on the information you have entered in the “Basic
settings” menu. In the illustration above, the full range
is shown, as generated by the entries “2AIL 2FL” in the
“Ail/Flap” line, and “none (/inv) in the “Motor at Ch 1” line.
This menu will show a varying range of options depend-
ing on the information you have entered in the “Basic
settings” menu. In the illustration above, the full range
is shown, as generated by the entries “2AIL 2FL” in the
“Ail/Flap” line, and “none (/inv) in the “Motor at Ch 1” line.
Of particular interest at the moment are “AIL-Diff.”
(aileron differential) and the “AIL
(aileron differential) and the “AIL
¼ RUD” (aileron ¼
rudder) mixer, sometimes known as a combi-switch,
and perhaps the mixers “Brake
and perhaps the mixers “Brake
¼ AIL” and “Brake ¼
FLAP”.
As already described in detail on pages 89 and 90, the
purpose of “AIL-Diff.” (aileron differential) is to eliminate
adverse yaw.
When a model aircraft turns, the down-going aileron
produces more drag than the up-going one if both move
through the same angle, and this causes the model to
yaw in the opposite direction to the turn. This can be
As already described in detail on pages 89 and 90, the
purpose of “AIL-Diff.” (aileron differential) is to eliminate
adverse yaw.
When a model aircraft turns, the down-going aileron
produces more drag than the up-going one if both move
through the same angle, and this causes the model to
yaw in the opposite direction to the turn. This can be
eliminated by setting differential aileron travel. A value
between 20% and 40% is usually a good starting point,
but the “perfect” setting nearly always has to be estab-
lished by practical testing.
The same applies to the “FL-Diff.” (fl ap differential)
option if your model also features two camber-changing
fl ap servos, assuming that the fl aps are also to be used
as ailerons, e. g. using the “AIL
between 20% and 40% is usually a good starting point,
but the “perfect” setting nearly always has to be estab-
lished by practical testing.
The same applies to the “FL-Diff.” (fl ap differential)
option if your model also features two camber-changing
fl ap servos, assuming that the fl aps are also to be used
as ailerons, e. g. using the “AIL
¼ FL” mixer.
The “AIL
¼ RUD” (aileron ¼ rudder) mixer serves a
similar purpose, but also makes many models generally
easier to handle when turning. A value of around 50%
is usually a practical starting point. However, it is advis-
able to be able to switch this function off, particularly if
you have ambitions as an aerobatic pilot; this is done by
assigning a physical switch to the mixer (for example,
the writer switches this mixer off “automatically” when he
switches into the “Speed” fl ight phase, simply by assign-
ing the same switch to both options).
It is usually only necessary to set up a “Brake
easier to handle when turning. A value of around 50%
is usually a practical starting point. However, it is advis-
able to be able to switch this function off, particularly if
you have ambitions as an aerobatic pilot; this is done by
assigning a physical switch to the mixer (for example,
the writer switches this mixer off “automatically” when he
switches into the “Speed” fl ight phase, simply by assign-
ing the same switch to both options).
It is usually only necessary to set up a “Brake
¼ ELE”
(brake
¼ elevator) mixer if your model suffers an
excessive change of speed when you deploy the brak-
ing system. The danger is that you might need to retract
the brakes again on the landing approach when you
realise the model will “land short”; if its airspeed is too
low when you retract the brakes, the model will just fall
to the ground at that point. If you set up such a mixer it is
important to test the setting at a safe height, and adjust
the trim compensation if necessary.
If you have selected “2AIL” or “2AIL 2FL” in the “Aileron /
Flap” line of the “Basic settings” menu …
ing system. The danger is that you might need to retract
the brakes again on the landing approach when you
realise the model will “land short”; if its airspeed is too
low when you retract the brakes, the model will just fall
to the ground at that point. If you set up such a mixer it is
important to test the setting at a safe height, and adjust
the trim compensation if necessary.
If you have selected “2AIL” or “2AIL 2FL” in the “Aileron /
Flap” line of the “Basic settings” menu …