HITEC OPTIC 6 - Setting Subtrims

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Sim
p
le Transmitter Setu
p
-
Aerobati
c
Air
p
lane
(
ACGL Menu
)
RIGHT
LEFT RIGHT
LEFT
Servo
Pushrod
Front
V
iew
If the rudder moves the wrong direction, move over to Channel
4 by pressing the Cursor Right key. Now the '4' should be
flashing
in the display. Activate the opposite direction for the
rudder
servo by pressing the Active/Inhibit (Clear) key. Move
the
left-hand stick left-and-right again and verify the rudder
moves
the right direction.
If your model has retracts, set the correct response direction
when
commanded by the Gear (SW-2) switch, using the same
procedure.
If you're using a second aileron servo, you'll now set the left
aileron
servo direction (otherwise skip this and the next step).
This
is channel 6, and the '6' should be flashing for this
command.
When you move the right-hand stick to the right, the
aileron
on the left wing should move downwards. Check that
the
left aileron moves the correct way! If it does not, activate
the
opposite direction for the left aileron servo using the above
procedures.
Move the right-hand stick again and verify the left
aileron
moves the proper directions.
Press the Up or Down arrow keys to the Flap Travel function
( FLPT ), and input a percentage of zero ( 0 ) using the Data -
Decrease key. This temporarily disables the flap lever ( Right
Lever ) so that you can set aileron neutrals without regard to
the
flap lever position. Later we'll turn it back on.
23. Before we set the servo neutrals, we need to be sure that
all the trims are centered. Press both Edit keys to get to the
main
menu, where voltage and time are displayed. Press
the
Up arrow until the word TRIM appears. By moving each
of
the four trim levers around, you can see their positions,
and
move them back to zero for the next step.
24. Once you have centered all the trims, unscrew the screws
holding
the servo arms onto the elevator, aileron, and
rudder
(we'll set the throttle travel later). You will want to
place
the servo arms on the output shaft so they are near
neutral
- that is, about 90 ° to the servo case sides or, if the
servo is mounted sideways, 90 ° to the pushrod
(sideways mounting is not recommended). This way you
won't
run out of subtrim authority. Remove all the arms
that
are in the way or interfere with your pushrods.
90
A
djust the clevises on each servo pushrod to get the position of
each
control to be as close as you can to neutral (lined up with
the
adjacent portion of wing or tail).
Setting Subtrims . Now we'll adjust all the subtrims to
electronically
set the desired neutral locations. To do so, go
back
to the programming menu by pressing both Edit keys,
then
press the Up or Down arrow key repeatedly until STRM
appears.
25. Set the right aileron subtrim first. If the little arrow is not
pointing
at channel 1, press the one of the Cursor Left or
Right buttons until it is (see figure). Then, adjust the
subtrim
amount by adding or subtracting with the Data
+Increase or -Decrease keys. When you reach a place
where
the right aileron matches up with the fixed portion of
the
wing, you are done. If you can't get both to match up,
then
set the subtrim back to zero and mechanically adjust
the
clevis to get as close as you can, then readjust the
subtrim
if necessary.
26. Note 1 : you should NOT use subtrims instead of
mechanically
adjusting the pushrods to be close. This is
because
you can reduce the travel of the radio, especially
if
you have to set the subtrim at or above 50%. As we
stated
before, get the pushrods close mechanically first,
then
use the subtrim adjustment to get it just right.
27. Note 2: if you mess up the number you've entered or find
the
percentage the wrong direction, you can get back to
zero
quickly by pressing the Active/Inhibit (Clear) button.
28. Repeat the subtrim adjustment with the elevator servo ( CH2 ).
First
set the pushrod length mechanically to get as close to
neutral
as possible, then set the subtrim to get the elevator
lined
up to be parallel with the stabilizer portion. For
full-flying surfaces, use an incidence meter or another
method
to get the incidence angle recommended by the kit
manufacturer
or model designer.
Sim
p
le Transmitter Setu
p
-
A
erobatic
A
ir
p
lane
(
ACGL Menu
)
-
Pa
g
e 18