GRAUPNER mc-32 Programming Manual page 274

B R A K E S E T T I N G S
Crow 0%
Diff. reduct
Elevat. cur ve
Normal
AILE WK
After this statement about mutual dependencies,
back to the topic:
If the ailerons are to be elevated for braking, an
appropriate value is entered into the "Crow" line after
activating the "AILE" column's value fi eld. In addition,
a value should always be entered in the line below
it, "Diff.Reduct" (differentiation reduction), which
corresponds to the value you entered or would like to
enter on the fi rst page of the »Wing mixers« menu in
the line "Aile.diff." (see fi gure above)! With this entry,
on actuation of the brake joystick, the set aileron
differentiation is hidden again proportionally in order
to increase the downward the throw of the raised
ailerons and thus signifi cantly improve its effect in the
braking phase.
A setting of the " Elevat. curve" mixer is then only
necessary if the fl ight speed of the model changes
too dramatically on actuation of the brake system. In
any case, you should try out the setting at a suffi cient
and readjust, if necessary, whereby you should focus
less on the fl ight position than on maintaining the
"normal" fl ight speed of the model. Otherwise there
is the risk that the model plunges when engaging
the brake system, because it became too slow in the
meantime:
274 Programming examples - Winged models
Brake
0% 0%
Input
Curve Output
WK2
off Point
Normal
After exiting the "Brake settings", the "Aileron
differentiation can be set:
This serves to eliminate the negative torque. The
downward defl ected aileron normally generates
a higher level of resistance during the fl ight than
when defl ected upward the same distance, whereby
the model is pulled to the "wrong" side. In order to
prevent this, with the input of a differentiation of the
travel of the respective servo defl ected downward is
reduced accordingly. A value between 20 and 40 %,
in this case, seldom arises, however, the "correct"
setting must be sought.
The option "AI 2  4 RU" (aileron  rudder)
also serves a similar purpose, as well as for the
comfortable control of a model. A value of about
50 % is a practical initial value. However, this function
should be made switchable with the assignment of
a switch if you ever have aerobatic fl ight ambitions.
(The author, for example, switches off this mixer
"automatically" when switching to the "Speed" fl ight
phase, in which he assigns both options to the same
switch accordingly.)
The last option in the »Wing mixers« menu, the
"El 3  6 Fl" mixer, is not yet of interest at the
moment.
If the model-specifi c settings were made thus far,
the initial start can be considered. If course, at fi rst
you should perform a "dry run", meaning you should
carefully check all the settings once again on the
Elevator
+100%
–25%
H –25%
– +
ground. Incorrect programming can damage more
than just the model! In case of doubt, ask the advice
of an experienced model pilot.
If you should fi nd during the testing that one or
multiple settings must be made for the adjustment of
the rudder effects to your control habits, the control
throws are too long or short on the whole, you should
adjust this in the ...
»Dual Rate / Expo«
... to your own requirements and habits.
"Dual Rate" establishes a relationship between
joystick travel and control travel, see page 120:
100%
Aileron ––– ––– 0%
Elevator ––– 100% ––– 0%
Rudder ––– 100% ––– 0%
DUAL EXPO
SEL SEL
On the other hand, if the maximum throws are OK
and only the reactions around the center position
are to strong for more sensitive controls, then the
"exponential" functions comes (additionally) into play:
Aileron 3 100% ––– 0%
Elevator ––– 100% ––– 0%
Move desired switch
––– 100% ––– 0%
Rudder
to ON position
(ext. switch: ENTER) DUAL EXPO
Normal
SEL SEL
If a switch is also assigned, switching can even take
place between two dual-rate/expo settings during the
fl ight.
(page 120)