User's Manual

91
Program description: wing mixers – fi xed-wing model
ail ¼ fl aps (Aileron ¼ fl ap)
This mixer feeds a variable amount of the aileron signal
into the fl ap channel. When an aileron command is
given, the fl aps “follow” the ailerons, although usually
through a smaller angle, i. e. the mixer ratio is gener-
ally less than 100%. The adjustment range of -150%
to +150% allows the user to set up the fl ap direction to
match that of the ailerons.
The fl aps should not defl ect more than about 50% of the
(mechanical) travel of the ailerons.
Simultaneously pressing the cd or ef buttons of the
right-hand four-way button (CLEAR) resets an altered
value to 0%.
Note:
If your model is equipped with only one fl ap servo, you
should still select “2FL” in the “aile/fl ap” line of the “Ba-
sic settings” menu (see page 58) but leave the “Ail ¼
Flap” mixer at 0%. In contrast, all the other wing mixers
can be used in the usual way.
brak ¼ elev (Airbrake ¼ elevator)
or
Extending any form of airbrakes usually generates an
unwanted change in airspeed; this is especially marked
when a butterfl y (crow) braking system is deployed (see
next page).
This mixer feeds a corrective signal to the elevator to
compensate for such an effect. The adjustment range is
-150% to +150%.
Simultaneously pressing the cd or ef buttons of the
right-hand four-way button (CLEAR) resets an altered
value to 0%.
“Usual” values are generally in single to low double
fi gures. It is essential to check and adjust this setting at
a safe height, and it is also important to ensure that the
model does not slow down too much when the airbrakes
are extended. 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.
brak ¼ fl ap (Airbrake ¼ fl ap)
When you operate the brake function (Ch 1 stick), both
fl ap servos move together for the landing approach; the
mixer ratio can be set to any value in the range -150% to
+150%. Down-fl ap is usually selected.
Simultaneously pressing the cd or ef buttons of the
right-hand four-way button (CLEAR) resets an altered
value to 0%.
At this point you select the value which causes the fl aps
to defl ect down as far as possible when the airbrake
function is deployed. However, please ensure that none
of the servos concerned strikes its mechanical end-
stops (servos stalled). To achieve this, you may need
to limit the servo travel(s) using the “Travel -/+” option,
which is found on the “RX SERVO” display page of the
“Telemetry” menu.
33112_mx12_HoTT_2_GB.indd Abs32:9133112_mx12_HoTT_2_GB.indd Abs32:91 06.06.2011 19:39:4006.06.2011 19:39:40