FUTABA 8UAFS - Helicopter Flight Trimming Chart

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for aileron, elevator, and rudder. The delays you
set apply to all flight conditions. We recommend
trying very small values for the initial settings, say
5 - 10%. A 25% delay is about a half-second
transit time between neutral settings.
You may use the Hovering Pitch and
Hovering Throttle functions for fine trimming
changes due to humidity, etc.
This concludes the example setup procedure
for helicopters. Be sure to browse through the
pages following this example to see what other
menus are available for helicopters, such as
Hovering Throttle and Pitch knobs, OFST, ACC,
DELAY, and INVERT CROSS. You may use a
mixer to adjust gyro sensitivity, or to enhance
flight capabilities or to correct a response you
don’t like. Again, we recommend you set up and
trim in the Normal flight condition before setting
up the alternate flight modes.
This procedure assumes helicopter is trimmed for hovering. Trimming must be done
in near-calm conditions. Repeat tests several times before making adjustments. If any
changes are made, go back over the previous steps and verify, or further adjust as necessary.
To test _ Test Procedure Observations Adjustments
1. Revo
mixing — Up
settings (Part 1)
Fly the model straight
and level into the wind
at 100 ft altitude, lower
pitch to 0°
Observe rotation as copter
descends
A. No rotation
B. Model rotates
counterclockwise
C. Model rotates clockwise
A. None
B. Add right rudder
trim
C. Add left rudder
trim
2. Revo
mixing — Up
settings (Part 2)
Bring the copter into
hover, add full pitch and
ascend 75 ft
Observe rotation as copter
ascends
A. No rotation
B. Model rotates
counterclockwise
C. Model rotates clockwise
A. None
B. Increase UP revo
mix
C. Decrease UP revo
mix
3. Revo Down
mixing settings
Begin Down Revo
mixing with same
number as UP mix.
From inverted flight (top
of loop, or mid-point of
roll, or inverted part of
split-S), add full
negative pitch
Observe rotation as copter
ascends
A. No rotation
B. Model rotates clockwise
C. Model rotates
counterclockwise
A. No adjustment
B. Increase Down
revo mix
C. Decrease Down
revo mix