JR Robinson R22, Руководство по сборке

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7-1
SERVO ARM PREPARATION AND INSTALLATION
......... 3 pcs
2 x 10 mm Flat Head Screw
.................. 3 pcs
Steel Joint Ball
..................... 3 pcs
2 mm Hex Nut
It will be necessary to prepare three servo arms as shown in the diagram below. Prior to
assembling the servo arms, the servos should be centered as indicated below, and the servo arms test
fitted to the servo to insure that the arms will attach to the servo as indicated. Since the JR servo arm
spline uses an odd number of teeth, it is sometimes possible to rotate the servo arm 180° to achieve a
more correct positioning.
Once the best direction for the servo arm has been decided, mark the servo arm with the servo it
is to be connected to (F, R, or L), as well as the side of the servo arm that needs to be removed.
It is very important that a heavy-duty type servo arm be used with the control ball location placed
at exactly 20 mm as shown. For JR radio users, we recommend the JRPA215 heavy-duty servo arms
for this use. If a control ball position other than the specified 20 mm is used, this will create an adverse
affect as to the travel of the swashplate, as well as unwanted control differential and interaction.
Prior to attaching the servo arm to the servo, it will be necessary to first turn on the radio system
to center each of the three CCPM servos. It is important that the radio’s collective pitch stick be set at
the center position. If your radio is equipped with a hover pitch knob, please check to make sure that
this knob is also in the center position at this time.
Connect the three servo arms to the three CCPM servos as shown. It is important that the servo
arms be positioned parallel to the servos as shown. If the servo arm is not parallel as shown, minor
centering adjustments can be made using the radio’s Sub-Trim function. Please refer to Section 7-2
for more information.
Use blue Threadlock
Steel Joint Ball
2 mm Hex Nut
Front Servo
Left Servo
Right Servo
Servo arm
must be
parallel to servo
as shown
2 x 10 mm Flat Head Screw
Remove this Section
JRPA215 Heavy-Duty Servo Arm
20 mm
Use Threadlock
JRP9012.46 Robinson R22 Manual 10/6/00 5:05 PM Page 32