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EPA menu function, (channel 3), and then move the throttle stick all the way up, for full
throttle. Observe the servo, throttle linkage and carburetor body while doing this. Ideally, you
want the servo to open the carburetor fully with the throttle stick in the up position. If this is
not the case, you may increase the end point setting to insure the throttle is completely open. If
the servo moves too much and jams the linkage against the carburetor, then you will need to
decrease the end point setting to prevent the jamming. Now, move the throttle stick to the idle,
or low, position on the transmitter. Observe the servo, throttle linkage and carburetor body
while doing so. The servo should close the carburetor such that almost no opening is left
within the carburetor throat. It should not be pulling hard against the carburetor and buzzing,
as it has been stalled if so. You will need to decrease the end point of the low throttle position
to prevent servo stalling. Or, if the throttle does not close enough, increase the end point to
decrease the throttle position, taking care not to stall the servo. You should also check the
carburetor stop screw to insure the throttle body will allow the throttle to close as needed.
Additional information on EPA adjustments is found on page 19 of your Optic 6 instruction
manual.
For the most part, you have completed 90% of the basic set-up requirement for a common powered
aircraft. You can now enhance the capabilities of your flight controls with the following Menu
Functions. It is not always necessary to use these features, depending on your own personal needs and
the way your model is equipped. So, let’s take a look at what you can do to make your flying
experience even easier.
DUAL RATE SET (D/R)
Dual Rates are used to either increase or decrease the amount of control surface movement
while in flight, allowing for a change in the control surface response from the model. Using the
Dual Rate controls is simply a matter of moving a Dual Rate switch position to change the
rates. Information on how to set the dual rates is also found on Page 20 of your Optic 6
Instruction Manual, but let’s take the time to set up the dual rates on your ailerons.
In this case, we wish to have a model that is easy to fly using the ailerons, but also can roll very
fast when needed for someone who is more skilled at flying. Enter into the Menu Functions
program by pressing both the UP and DOWN Edit keys while the transmitter is already ON.
Use the Edit keys to scroll up or down to reach the Dual Rate (D/R) screen. Note that the
value shown on the right of the LCD screen will have a value of 100%, meaning the servo will
move to the maximum amount you allowed the servo to move after setting the End Point
Adjustment. You may set this value up to a maximum of 125% and a minimum of zero
percent, meaning it is possible to exceed the End Point Adjustment (EPA) or to reduce the
movement to zero, (Please see the “Caution Note” below).
The first thing to do is to select the channel you wish to have a dual rate value placed upon.
The cursor arrow should be above channel 1, Ailerons, when first entering into the D/R screen.
You may select channel 1, 2 or 4 only (ailerons, elevator or rudder only). Once you have
selected the channel you wish, (in this case, let’s do the ailerons), we can begin setting the dual
rate. In this example, let’s assume we have a model that is aerobatic, but rolls too fast for a
new pilot to handle. We can reduce the aileron response greatly by decreasing the control