Sub Trim - JR X9303 2.4 Instruction And Programming Manual

Sub Trim

Sub Trims are intended for relatively minor adjustments
to servo linkages and not for major trim adjustments to
the helicopter. Using excessive sub trim percentages can
cause a loss in servo travel in one direction where the
servo reaches its travel limit and stops moving before the
control stick is fully deflected.
1. Highlight and select Sub Trim in the FUNC.LIST to
obtain the Sub Trim Display.
Note: If a form of CCPM has been selected, channel
naming will vary.
H-16
[Sub Trim]
THRO 0
AILE 0
ELEV 0
RUDD 0
Use Sub Trims to fine-tune the alignment of servo arms.
Install servo arms on the servos so that the arms are at
90˚ or perpendicular to the servo case/linkage. As JR
servos feature an odd number of splines on the output
shaft, you can rotate and reinstall the arms to try and
obtain a better position for the servo arm that will require
a lesser amount of sub trim. Now use the Sub Trim
function to fine-tune the servo arms that are not quite at
90˚ to the servo.
2. Highlight and select the channels where the servo arms
are not quite at the desired position. Once a channel is
selected, rotate the Selector until the servo arm is at
90˚ to the servo case.
GEAR 0
PIT. 0
AUX2 0
AUX3 0
AUX4 0