Optic 6 Sport - Page 21
Setting up exponential
1) Push the CURSOR buttons repeatedly until the channel "1"
is blinking.
2) The default exponential value is 0%. To create some
softness around the neutral position of the stick, we want to
apply some negative exponential. With switch SW-2 set in
the "1" position, push the - DATA button until the screen
indicates -25%--a typical exponential value for ailerons.
You can, of course, increase or decrease this amount as
you get a feeling for how the plane flies.
3) Move over to CH 2 with the CURSOR and set -25% on the
elevator; move to CH 4 and set -25%--again these are
arbitrary starting points subject to your personal preference.
Notice that when you push the SW-2 switch back to its "0"
position all the exponential values return to their default zero
settings.
4) If you want, you can have some "expo" on any or all three
of these channels by setting a value with the switch in the
"0" position. To quickly get back to the default 0%, press the
Clear button.
5) Return to the regular operating mode by pressing the two
EDIT Up Down buttons simultaneously.
Note: You should understand that you won't see changes in your
model's servo response unless you move the sticks.
To get a feel for how exponential works, hold partial stick and watch the
control surfaces as you switch the Expo on and off
(one side of the switch should be set to zero expo in this case).
Note: Once each flight condition is activated, you can set EXP for each
flight condition respectively.
EXP (Exponential Rate)
EXP (Exponential)
This function-which may also be new to first-time computerized
radio users-allows you to choose the exponential value for the
ailerons, elevator and rudder. Applying exponential enables
you to "soften" the stick throws to take out the "twitchiness" of
your model's response to your control inputs.
The greater the negative value you specify, the less effect the
sticks have around their center points-and the less effect your
twitchy fingers have on your model's performance. (Conversely,
positive exponential makes the servos very sensitive around
neutral and soft at the extreme stick throws-an effect best left
to the experts!) Like the dual-rate programming, you can apply
or remove this function with switch SW-2.
Note: The values you set for exponential are highly dependent
on both the model and pilot's preference.
We recommend a start value of about -25 to -35%, and, after
test flying, slowly increasing the number until things feel "right".
Obviously this depends on the pilot and model so go ahead and
fly it with Expo only on one side of the switch, turn it on and off
during flight, and change the values to suit yourself.
Or don't use it at all if you don't like it - it's not for everyone.
Servo
Response
Stick Motion
Negative Exponential
gives smaller response for
same stick motion
around neutral
Normal
linear
response
Increasing negative
exponential
(shallower around
neutral)
0%
(Linear)
-25%
-50%
-75%
Much less response
around neutral (Compare
with Normal line)
!
Tip
Exponential ("Expo") is great for beginners and highly
recommended. Try it out. Your flying will be smoother and
more controllable, reducing the stress most beginners feel
when learning to fly.
