RadioLink AT9S PRO - Page 72

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• PIT-CURV/NOR: inputs the normal (NORM) collective pitch curve, the collective pitch curve for flight near
hover. The normal collective pitch curve is adjusted to match the throttle curve, providing the best vertical
performance at a constant engine speed, with a starting curve of 4 base, +5 neutral, and +8 to +10 degrees of
blade pitch maximum. You can program the response over a 7-point curve for the best collective pitch angle
relative to THROTTLE STICK movement.
• REVO./NORM: mixes collective pitch commands to the rudder (a PITCH-RUDDER mix) to suppress the
torque generated by changes in the main rotor's collective pitch angle, keeping the model from yawing when
throttle is applied.
Note: There are three revo, mixes available: normal (NORM), idle-up 1/2 (IDL1/2), and idle-up 3 (IDL3). All
3 are adjustable in the ADVANCE menu. Never use revo mixing in conjunction with heading-hold/AVCS gyros.
For details on revo, including default points for clockwise and counterclockwise rotating rotors.
Goals
Steps
Inputs
Set up N orm a l F li gh t
Co nd it i on
Throttle/Collective Pitch
Curves and Revo.
Base point: Adjust base point
of throttle curve until engine
idles reliably on ground.
Adjust base point of
collective pitch curve to
achieve -4 degrees of
blade pitch. Apply throttle
until the model sits ‘light’ on
its skids. Adjust
base point
of
REVO
. until model does
not
rotate its nose at all.
Open the
THR-CURVE, Adjust
the first point.(5%)
for 1s to BASIC.(If ADVANCE again) .
to THR-CURVE ， to point 1 ， to
5%，
。
Open the
PIT-CURVE, Adjust
the first point.(8%)
to PIT-CURVE ， to point 1 ， to
8%，
Open the REVO.MIX
Adjust the first
point.(4%)
to REVO.MIX ， to MIX ， to
ON. to point 1 ， to 4%，
。
Hover point: Adjust
collective pitch curve to +5
degrees. Ease heli into a
h o v e r . L a n d / s h u t
e n g i n e o f f . A d j u s t
t hrottle curves and rudder
trim. Repeat until model
hovers smoothly at half
throttle. Rapidly apply
throttle from 1/4 to 1/2
stick. Adjust
REVO
.
points 2 and 3
until the model does not
rotate its nose up on throttle
application.
Adjust
THR-CURV/NOR
Repeat above as needed
Adjust
PIT-CURV/NOR
Repeat above as needed
Adjust
REVO.MIX
Repeat above as needed
High point: Adjust
collective pitch curve to +8
to +10 degrees. From hover,
throttle up rapidly. If
engine bogs, increase the
throttle curve. If engine
over-revs, increase the
collective pitch curve at
points 6 or 7. Apply full throttle
while hovering, then
descend back to
hover.
Adjust
THR-CURV/NOR
Repeat above as needed
Adjust
PIT-CURV/NOR
Repeat above as needed
Adjust
REVO.MIX
Repeat above as needed