HITEC Optic 6 - Manual (Page 19)

Airplane Model Function Descriptions Airplane Model Function Descriptions
Setting Up A->R Mixing (Rudder Coupling)
either the ON indicator or the OFF indicator will be flashing,
depending on the position of the ON-OFF switch that is
selected. See the Switch Select instructions on P. 39 for
information on how to select the ON-OFF switch.
2. Press the Cursor Right key once, and the Percent sign will
be flashing. Move the aileron stick all the way to the right,
and adjust the R/D mixing amount by pressing the Data
+Increase or -Decrease key. You may set any amount
between -100 and 100% (an initial value of 10-20% is
suggested). To return to the initial 0% value, press the
Active/Inhibit (Clear) key.
3. Move the aileron stick all the way to the left, and adjust the
L/U mixing amount in the same way. To return to the initial
0% value, press the Active/Inhibit (Clear) key.
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Airplane Model Function Descriptions - Page 37 Airplane Model Function Descriptions - Page 36
E->F - Elevator Flap Mixing
Elevator-to-flap mixing makes the flaps drop or rise whenever
you pull on the elevator stick. It is used to make tighter "pylon"
turns or squarer corners in maneuvers. Elevator-to-flap mixing
is set up so that the flaps droop (are lowered) when up elevator
is commanded.
Notice that this mixing function works with the flaperon setting.
If flaperon mixing (FLPN) AND E->F mixing are activated, when
you pull up elevator, BOTH ailerons will droop. This function is
turned on with the Flt. Mode (SW-4) switch fully forward.
1. Press one of the Up Down Edit buttons until the E->F
window appears. The default is for the function to be
inhibited. To activate, press the Active/Inhibit (Clear) key.
This will cause he INH display to change to a number display,
and either ON or OFF will be flashing either the ON indicator
or the OFF indicator will be flashing, depending on the
position of the ON-OFF switch that is selected. See the
Switch Select instructions on P. 39 for information on how
to select the ON-OFF switch.
Setting Up E F Mixing
UP elevator DOWN flap or flaperon
ON or OFF
depends on Flt.
Mode switch setting
2. Press the Cursor Right key to get the percent sign flashing,
then press the Data +Increase and -Decrease keys to
increase or decrease the amount of mixing. Check the
direction the flaps move with elevator stick: with up elevator,
the flaps should droop downwards, and for down elevator
they should come up. In other words, they should move
opposite the elevator motion. If they don't, use the Data
+Increase and -Decrease keys to change the sign in front
of the percentage number. You should probably start with
a smaller number (say 20% or so) and slowly increase it to
learn how the model reacts. Remember the position of the
Flt. Mode (SW-4) switch turns this function on and off (fully
aft turns it ON).
The Crow mixing function is useful for increasing the drag of
a model during landing approaches, which makes the approach
steeper and slower, making landings shorter and easier. This
is especially useful for stunt planes and sailplanes to help make
precision landings. You may select the switch that turns on
the Crow function, and the function is commanded
proportionally by the Left Lever position. You can move the
lever a small or large amount and get a small or large travel
(unlike Camber which provides a fixed amount of motion).
Ailerons, elevator, and flaps are the three controls that are
commanded by Crow function, which is also called "butterfly"
in the sailplane world.
CROW - Crow Mixing (Airbrakes)
The idea of the crow function is to simultaneously raise the
ailerons (which reduces the wing's lift), and drop the flaps (to
regain the lift lost by the up aileron movement). Elevator motion
may also be also commanded if needed to prevent a trim
change induced by the flap and aileron motion. Normally, crow
is set up so that the maximum control movements (maximum
drag) occur at "low" slider position (towards the bottom of the
transmitter). The selected ON-OFF switch must be ON for
Crow to operate.
Note: activating CROW automatically turns CH5 into a second aileron
servo, and CH6 becomes a flap servo commanded by the Right
slider if FLPT is not set to zero.
1. Start by locating the CROW menu with the Up Down Edit
keys. Either the ON or OFF display will be flashing,
depending on the position of the Gear switch SW-2
(forward is on).
2. First set the CROW function activation point. Hit the Cursor
Left key one time to get to the SET menu. Now move the left
lever all the way up. Enter that position by pressing the
Clear Active/Inhibit key. The display should read a number
around +125%.
3. Make sure CROW is ON by moving the Crow on-off switch
to its ON position. Verify by looking at the flashing ON/OFF
indicator. Either the ON indicator or the OFF indicator will be
flashing, depending on the position of the ON-OFF switch
that is selected. See the Switch Select instructions on
P. 39 for information on how to select the ON-OFF switch.
Setting Up Crow Mixing
4. Next, set up the throws for the first aileron. Press the Cursor
right key two times to get to the aileron setting menu
(a small arrow will appear over the number 1 in the display).
Press the Data +Increase or -Decrease keys to adjust the
amount of aileron motion. Move the Left lever all the way
down and be sure the ailerons go UP. If they don't, press the
Clear Active/Inhibit key and then press the Data keys
change the sign. You'll probably want a fair amount, but not
all, of aileron travel. Be sure not to use full travel, so you'll
have roll authority while on approach in full crow command.
Notice that you set the throw for both ailerons at the same
time: this is the reason to have identical control arm lengths
and identical neutral positions.
A->R - Aileron Rudder Mixing
Aileron-to-rudder mixing is a function that causes the rudder to
move automatically with the motion of the aileron stick. This is
done because when ailerons are used to command a turn, the
down-moving aileron has more drag than the up-moving one,
so the plane's fuselage tries to yaw against the turn. Adding
rudder mixing cures this problem by making the fuselage point
straight into the oncoming air stream (this is also called
"coordinating the turn").
The slower the model flies, the more mixing is needed, and the
faster it moves, the less is needed. It is ideal to make slow-
flying scale models fly realistically. The amount of coupling is
highly dependent on the model configuration. Usually only a
small amount of rudder is needed. It will also help to set up
some aileron differential using the EPA menus. A good
starting point is to limit the ailerons' down motion to 50% to
75% of the up-moving aileron's motion.
The aileron-to-rudder mixing function may be on always, or
may be turned on and off using Switches 1, 2, 3, or 4. You
may choose how in the S/W SEL menu.
Nose Points outside Circle
increase coupling and/or
differential Coordinated turn
fuse lines up with turn direction
(don't change anything!)
Nose Points inside circle
too much coupling or differential.
Reduce one or both.
1. Press one of the Up Down Edit buttons until the A->R
window appears, as shown. The default is for the function
to be inhibited, as shown. To activate, press the Active/
Inhibit (Clear) key. The letters "INH" will turn to "0," and
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