40
7-5
THROTTLE LINKAGE INSTALLATION
..........1 pc
..........1 pc
Steel Joint Ball
..........1 pc
2mm Hex Nut
Note: Make sure the Throttle Trim
is in the low position before
attaching the Servo Horn.
When preparing the servo arm, it is very
important that the distance of the hole
selected is of equal distance to that of the
carburator throttle arm.
Carburator Throttle Arm
12.5mm
SERVO HORN SELECTION/PREPARATION
THROTTLE ARM/SERVO HORN POSITIONS
*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.
90°
90°
Servo Reversing Directions
JR Reverse
Futaba
Reverse
Use Threadlock
2x8mm Flat
Head Screw
2.3x50mm Threaded Rod
JR
Futaba
37mm
38mm
High
Low
Steel Joint Ball
2mm Hex Nut
Servo Horn
12.5mm
Servo Arm
Use this hole
JR
Futaba
Z
2x8mm Flat Head Screw