Manual

Glider(GLID) Section
33
causes the fuselage of the model to yaw away from the
desired turn direction, exactly the wrong thing to have
happen. This causes even more drag, which can really
hurt a glider's performance. There are two ways to
reduce the yaw of the fuselage, differential (ADIF) and
rudder coupling (A->R). Both should be used together,
but you only find ADIF in the glider menus. Aileron
differential causes the ailerons to automatically move
with more UP than DOWN motion, which helps to reduce
induced drag. It helps, along with rudder-coupling, to
make the fuselage point straight into the oncoming air
stream (this is also called
"coordinating the turn").
The amount of differential is
highly dependent on the
model configuration. A good
starting point is for the down
aileron to move 50% to 75%
as much as the up-moving
aileron.
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.
Setting Up Differential
1. Press one of the Up Down Edit buttons repeatedly to
select the ADIF window.
To begin with, the function
is already activated, but it's
set to 100% on both sides
so there is no differential.
2. A small arrow is displayed under the numeral 1,
showing that CH1 is the affected channel. To set the
differential for the right aileron (CH1) down travel, hold
the aileron stick to the left side (display shows L/U), and
press the Data Decrease key (the right aileron moves
down when left aileron stick is commanded). Continue
reducing the percentage until you reach about 60% to
70%.
3. Make sure that the up travel for the first aileron (CH1)
stays at 100% by holding the aileron stick to the right
side (display shows R/D) and verifying that the display
shows 100%.
4. Press the Cursor Right key once, to get to the left
aileron (CH5) setting menu. A small arrow is displayed
under the numeral 5, showing that CH5 is the affected
channel.
5. Move the aileron stick to the right (display shows R/D),
and press the Data Decrease key reducing the
percentage until you reach about 60% to 70%.
6. Make sure that the up travel for the second aileron
(CH5) stays at 100% by holding the aileron stick to the
left side (display shows L/U) and verifying that the dis-
play shows 100%.
7. If for some reason you want a 0% setting, press the
Active/Inhibit (Clear) key. This is the maximum amount
of differential you can get, but will reduce the roll rate if
selected.
See page 25
VTAL - V-Tail Programming
E->F - Elevator Flap mixing
See ACRO instructions on page 23. The GLID mode
E->F function is turned on with the Flt. Mode switch fully
Back. Also, the Elevator-Flap mixing does not provide
full trailing-edge motion on gliders even if the F->A mixing
function is activated - only the center flaps are coupled.
A->R - Aileron Rudder mixing
See page 24.
F->A - Flap Aileron mixing
Flap Aileron mixing (F-> A) is used to make both
ailerons move together as flaps when the camber-
changing/flap knob VR1 is rotated. This allows full-span
camber changing on models with either two ailerons and
one flap (2WNG) or two ailerons and two flaps (4WNG).
It is on only if the Ch. 7 switch is forward, and functions
at the same time as flap->elevator mixing (see next
menu).
Using Flap->Aileron Mixing
1. Locate the flap->aileron mixing function by scrolling to
the F->A menu with the Up Down Edit keys. The default
is for it to be inhibited (Inh). Press the Active/Inhibit
(Clear) key so that the '+100%' display is shown,
meaning the ailerons follow the flaps 100%. Depending
on the position of the Ch. 7 switch, either 'On' or 'Off' will
be flashing.
2. Press the Cursor Right key once, to get to the percent
setting menu. Press the Data +Increase or -Decrease
keys to adjust the amount of mixing to suit.
3. Move the flap knob so the R/D display changes to
L/U, or vice versa, and repeat the setting adjustment for
that side of the travel. You can set an input on each side
of the flap knob.
4. If you want to zero out the amount of mixing on one
side of the knob's travel, press the Active/Inhibit (Clear)
key.
5. You can observe the effect of flap->aileron mixing on
the aileron servos when the function is turned on with the
Ch. 7 switch, and you move the flap knob (VR1) back
and forth.
F->E - Flap Elevator mixing
Flap Elevator mixing (F->E) is used to make the ele-
vator move to maintain trim when the camber-changing/
flap knob VR1 is rotated. It functions at the same time as
flap->aileron mixing (see previous menu). F->E mixing is
on only if the Ch. 7 switch is forward.