JR Vigor CS Assembly Instructions Manual Download

Page: 60 / 92

Now that the radio system is completely installed into the helicopter, it’s
necessary to check and adjust the following:

1. Servo Direction (Servo Reversing)

Check to insure that all servos have been set to the correct direction as
shown in the Control Linkage Installation section.

2. Dual Rates

It’s suggested that for initial flights, the dual rate function values be
set as follows:

0 Position (low rate) 90%
1 Position (high rate) 100%

3. Exponential Settings

It’s suggested that the exponential rate settings remain in the 0 value
position until the initial test flights. After initial flights, adjust the
exponential values to achieve the desired control feel.

4. Sub-Trim Settings

It’s suggested that the correct neutral settings be achieved without the
use of the Sub-Trim function, as this will affect the neutral position of the
servos. Adjust the cyclic trim using the control rods until a neutral hover
is achieved.

5. Pitch/Throttle Curve Adjustment

It is very important the throttle and pitch curves are adjusted properly to
achieve the best performance from your helicopter. When properly adjusted,
the main rotor head rpm should remain consistent throughout all
maneuvers and throttle stick positions. A constant rpm will also help to
improve the effectiveness and accuracy of the tail rotor and gyro systems.

A) Pitch Curve

It will now be necessary to establish the maximum pitch

value required for your application prior to adjustment. For
example, if you are a 3D pilot, then your maximum negative
pitch will be -10, and your maximum positive pitch will be +11.
The maximum pitch range that you will require will be 21° total.

The maximum pitch range mentioned above must be

established through the use of the pitch travel value in the CCPM
function. As mentioned previously, do not try to establish the
maximum pitch curve values through adjustment of the travel
adjustment function, as this will alter the pitch-to-aileron and
pitch-to-elevator travel values established in Steps 7-8 and 7-9.
Please refer to the CCPM activation section (page 46) for
information on how to access the CCPM function.

Once the CCPM function has been activated, set the

maximum positive pitch settings as mentioned above. Since the
CCPM function does not allow for independent travel settings for
positive and negative pitch, it will be necessary to establish the
maximum positive pitch, since this is generally the largest degree
of pitch in the pitch range. Once the maximum positive pitch
range is set, the maximum negative pitch range can be reduced as
needed through the pitch curve function.

Set the main rotor pitch gauge to the desired maximum pitch

setting, then increase or decrease the CCPM pitch travel (labeled
Pitch or Ch6) as needed until this pitch setting is achieved.

Once this procedure has been completed, the positive and

negative pitch settings for each flight mode can be adjusted
through the radio’s pitch curve function. Please refer to your
radio’s instruction manual for more information.

FINAL SERVO ADJUSTMENT AND RADIO SETUP

0°

-9°

1°

Normal

(Hover)

Stick Position

Low 1/4

1/2

3/4

High

Stick Position