User's Instructions

Helicopter
(HELI)
Section
– 89 –
REV
— Servo Reverse
See ACRO instructions on page 47.
T.CUT
— Throttle Cut
Described in the ACRO instructions on page 48.
PMX1
,
PMX2
— Programmable Mixing
See ACRO instructions on page 49. There are two programmable mixers in the helicopter menus.
PMIX-1 is operated with the Rudder D/R switch and PMIX-2 is selected with the Gear switch.
R->T
— Rudder
→
→ →
→
Throttle Mixing
Rudder → Throttle (R->T) mixing is used to maintain rotor speed so that altitude is kept
constant when the rudder stick is operated in hover. The reason for this mixing is that when
rudder is commanded, the tail rotor consumes a little more power, which reduces the power at
the main rotor and the helicopter drops or climbs. For helicopters with normal rotor rotation,
commanding right rudder (which requires more power) should also increase throttle slightly,
while using left rudder (requires less power) should decrease the throttle slightly. R->T mixing is
handy for hovering but may also be used in 540° stall turns, hovering eights, nose-in circles, Top
Hats, Pirouettes, and other aerobatics.
Setting Up Rudder->Throttle Mixing
1. Press one of the
Up Down Edit
buttons repeatedly to select the
R->T
window. The function is
activated by switching the Flt. Mode switch all the way back. It's set to 0% on both sides so
there is no differential.
R->T + 10
%
L/U
2. To set the mixing amount for the left rudder, hold the rudder stick to the left side (display
shows L/U), and press the
Data Decrease
key. Continue reducing the percentage until you
reach about
10%
. If for some reason you want a 0% setting, press the
Active/Inhibit (Clear)
key.
3. Input the mixing amount for right rudder by moving the rudder stick to the right (display
shows R/D), and press the
Data Increase
or
Decrease
key to reach about
10%
.
4. Note that R->T mixing may only be set up in the NOR menu.