Mixer: Ail.diff; Parameter: Mode; Parameter: Diff - Multiplex ROYALevo 7 Manuel D'utilisation

In the bottom line you can set the "following" value (2%
to 200%). The direction of following is determined by
the prefix to the value. In most cases the rudder "fol-
lows" the aileron (aileron = Master). In this case a posi-
tive prefix (+) needs to be set. If you set a following
value of 100%, full aileron movement produces full rud-
der movement. If you set a value of 200%, full rudder
travel is reached when aileron travel is only half of full.

Mixer: Ail.Diff

15.3.
fixed-wing models only
Diff.: -100% ... OFF ... 100%
Prefix (+/-) reverses direction
Adjust. range
=> reduces up or down aileron travel
Separate differential value (Differ.)
can be set for each flight phase
Differential value (Differ.) can be
F
assigned to a 3D digi-adjustor
( 11.2.2. )
A simplified description of aileron differential:
If aileron travel is the same up and down (symmetrical
movements), the down-going aileron (on the outside of
the turn) generates greater drag than the up-going ai-
leron on the inside of the turn. The result is an un-
wanted moment (adverse yaw) which tends to rotate
the model away from the turn. The model yaws in the
opposite direction to the turn.
Differential aileron travel reduces the adverse yaw by
reducing the travel of the down-going aileron. Note
that differential travel is only possible if separate servos
are used for each aileron. 100% differential is also possi-
ble: in this case only the up-going aileron moves ("split"
mode).
Differential aileron travel is not necessary for high-
speed power models with symmetrical-section wings.
Gliders with heavily cambered wings are the usual can-
didate, and a differential rate of around 50% is generally
a good starting point with such models, although the
optimum value can only be found by flight-testing. The
greater the camber of the wing section, the more differ-
ential is required. For this reason it is possible to set dif-
ferent rates of differential in each flight phase.
Example - glider and flight phases:
NORMAL: Ail.Diff=50%
THERMAL*: Ail.Diff=65%
SPEED**: Ail.Diff=40%
* Ailerons (and camber-changing flaps, if fitted) are de-
flected down slightly for thermal flying
=> greater airfoil camber
=> more aileron differential required
** Ailerons (and camber-changing flaps, if fitted) are de-
flected up slightly for speed flying
=> reduced airfoil camber
=> less aileron differential required
ROYAL evo 7 - Instructions

Parameter: Mode

15.3.1.
The Mode parameter is used to activate the Ail.Diff
mixer (ON) or switch it off (OFF).
If both ailerons of your model can also be raised to act
as a landing aid, you should choose the SPOILER
mode. This means that differential aileron travel is sup-
pressed when the landing aid is deployed (using the
"spoiler" transmitter control). The effect is that more ai-
leron response is available on the landing approach, as
the aileron travels are not reduced.

Parameter: Diff.

15.3.2.
This is where you set the differential value. If the differ-
ential travel is the wrong way round (up-aileron move-
ment reduced), simply reverse the value ("REV/CLR" but-
ton).
Aileron differential can be varied separately for each
flight phase. To set the value, activate the appropriate
flight phase using the flight phase switch "F-PH 1-3" (>J)
(the active flight phase is shown in the top line, and in-
dicated by the number preceding the parameter), and
set the appropriate value for Diff..
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