..........1 pc
2x8mm Flat Head Screw
..........1 pc
Steel Joint Ball
..........1 pc
2mm Hex Nut
Note: Make sure that the Throttle Trim
is in the low position before
attaching the Servo Horn.
SERVO HORN SELECTION/LINKAGE ADJUSTMENTS
THROTTLE ARM/SERVO HORN POSITIONS
JR System/Webra .35 Engine or MDS .38 Heli Engine
JR System/O.S. .32SX-H Engine
Futaba System/Webra .35 Engine or MDS 38 Heli Engine
Futaba System/O.S. .32SX-H Engine
Be sure to remove
the excess servo
horn arms as
shown. Secure the
Servo Horn using the
Servo Horn Screw.
*To avoid differential throttle travel, make certain both the throttle arm and the servo horn are positioned as shown in the above diagrams.
1/2 Stick (Throttle) Position
(Throttle Barrel 1/2 open)
Low Stick (Throttle) Position
(Throttle Barrel Fully Closed)
High Stick (Throttle) Position
(Throttle Barrel Fully Open)
To achieve the correct position of the throttle/servo arm, it may be
necessary to re-position the throttle arm on the carburetor. It may also be
necessary to adjust the length of the throttle linkage slightly to achieve full
open and closed positions of the carburetor.
It is also possible to increase/reduce the travel of the throttle servo through
the Travel Adjust Function found in most computer radio systems. If this
function is used, make sure the values for the high and low positions remain
equal (same value for high/low). If these values are not equal, this will create a
differential, or uneven movement of the throttle, making rotor rpm adjustment
and fine tuning more difficult.
2x8mm Flat Head Screw
Steel Joint Ball
2mm Hex Nut
Servo Horn
Use Threadlock
Low
Throttle
High
Throttle
12.5mm
12.5mm
2.3x75mm
58mm
60mm
59mm
57mm
Use This Hole
Use This Hole
90°
Servo Reversing Directions
JR Reverse
Futaba Reverse
48
7-8
THROTTLE LINKAGE INSTALLATION (ALL), CONTINUED
Use Blue Threadlock
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