Aircraft
(ACRO)
Section
– –
36
32. The Eclipse 7 provides a special throttle
trim function which allows the throttle trim
lever to work at low throttle levels, but
disables it at high throttle.
33. Repeat the subtrim adjustment with the
rudder (CH4), gear (CH5), 2nd aileron
channel (CH6), and the CH7 function if used.
As before, first set them mechanically, then
adjust the electronic settings. Be sure you
have selected the appropriate channel number
each time.
34. Servo EPA (End Point Adjustment).
Now we’ll go through and set the servo travels
for each channel. This is both helpful and
important, because you can set the throw of
each servo, in each direction, so that there is
no binding. Binding is important because it
causes very high current drain, and can lead to
a battery dying prematurely.
Another use for the EPA function is to adjust
the model's total throws to match the
recommended control motions specified on the
plans or instructions by the model's designer.
35. To set travels, get to the
EPA
menu by
pressing one of the
Up Down Edit
buttons
repeatedly until
EPA
appears. In sequence,
we’ll set right aileron right travel, right aileron
left travel, up and down elevator travels, right
and left rudder travels, open and closed
throttle positions, and left aileron travels.
EPA 100
CH
4213567
L/U
%
flashing
changes from L/U to
R/D with AIL stick
motion
36. When you reach the
EPA
menu, you’ll see
the screen as shown. The channel indicator is
above numeral 1 for right aileron, the percent
symbol will be flashing, and you’ll notice that
you can change the
L/U
indicator to
R/D
(or
vice versa) by moving the aileron (right) stick.
You are about to see that this is how you set
the travel directions independently for each
stick motion.
37. To set the RIGHT aileron motion, move
the aileron stick all the way to the right and
hold it. The letters “
R/D
” should appear next
to the flashing percent sign, meaning you are
setting either Right or Down travel (with
ailerons it’s right or left only, but the display is
set up to use the same indicators for elevator
and throttle, thus the dual meanings for the
letters). Now if your servo is stalled or
binding, you’ll hear a buzzing sound. Hit the
minus –
Decrease Data
key until the buzzing
stops. If the servo is not buzzing, leave the
setting at 100%. If you can, choose a location
for the pushrod on the servo arm so that the
throw is adjusted in the 90-100% range.
38. To set the right aileron’s LEFT motion,
move the aileron stick all the way to the left
and hold it. The letters “
L/U
” should appear
next to the flashing percent sign (as shown in
the figure above). Again listen and hit the
–
Decrease Data
key until the buzzing stops. If
the servo is not buzzing, leave the setting at
100%. (Remember, you’re only setting the
right aileron travel. You set the other aileron’s
travel in channel 6’s EPA.)
39. To set the UP elevator motion, press on
the
Right Cursor
key until the indicator moves
over channel 2. Now move the right stick all
the way to the transmitter bottom and hold it.
The letters “
L/U
” should appear next to the
flashing percent sign. Again listen for a
buzzing sound to indicate the servo is stalling,
and hit the
–Decrease Data
key until the
buzzing stops. If the servo is not buzzing,
leave the setting at 100%.
EPA 100
CH
4213567
R/D
%
flashing
changes from L/U to
R/D with ELE stick
motion
40. Repeat the previous step for DOWN
elevator by moving the stick all the way to the
top of the transmitter, full “down” elevator.
Check for binding and adjust the percentage as
before.
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